RU2802679C1 - Method for selecting resources and a device - Google Patents

Abstract

FIELD: resource selection.

SUBSTANCE: invention can be applied to the Internet of vehicles, such as V2X, LTE-V and V2V, or can be applied to areas such as intelligent driving and intelligent connected vehicles. The first resource is selected for the first data from the candidate resources included in the resource pool. At least one resource is selected for the first data from a candidate resource other than the first resource in the candidate resources based on the first resource and the first interval. The number of candidate resources is greater than or equal to X% of the number of all resources included in the resource pool, where the value of X meets the following condition: the value of X is set based on the target number of resources, is set based on the target number of resources and the first-time interval, is set based on the target the number of resources, the first time slot, and the first frequency slot, or is set based on the service priority. The value of X can be set based on various factors to best meet resource selection requirements.

EFFECT: increasing the efficiency of resource selection and reducing the complexity of resource selection.

35 cl, 27 dwg, 4 tbl

Description

Field of technology to which the invention relates

The present application relates to the field of mobile communication technologies and, in particular, to a resource selection method and apparatus.

State of the art

In new radio (NR), when using communication between a vehicle and any other objects (vehicle to everything, V2X), there are two modes of data transmission along the sidelink, which are associated with resource allocation: mode mode -1 (mode-1) resource allocation by the base station and mode-2 (mode-2) autonomous resource selection by the user. Mode-1 is mainly used for V2X communication with network coverage, and the base station centrally performs resource allocation based on the buffer status report (BSR) sent by the terminal device.

Mode-2 can be applied to V2X communication without network coverage. Of course, mode-2 can also be used if network coverage is available. In mode-2 mode, the terminal device on the transmission side autonomously selects a resource from the resource selection window based on the resource control result for communication. For example, a transmit-side terminal device may measure a candidate resource included in a resource selection window to obtain the reference signal received power (RSRP). If the measured RSRP value exceeds the specified threshold RSRP, the candidate resource must be excluded from the resource selection window; otherwise, a candidate resource may be selected. During the resource selection process, if the number of remaining candidate resources in the resource selection window is less than X% of the number of all candidate resources included in the resource selection window, the transmitting side terminal device shall increase the specified threshold value RSRP by 3 dB, and then compare the measurement result with the new threshold value RSRP.

Currently, the value of X is fixed at 20, where 20 is the value used by X in long term evolution (LTE)-V2X. LTE-V2X only supports blind retransmission with a maximum of two transmissions. Therefore, usually only two resources need to be selected for one transmission. When a small number of resources are selected, X = 20 can usually satisfy the requirement. However, in NR-V2X, many retransmissions can be performed and a large number of resources can be selected. In this case, if the X value is set to 20, the specified threshold value RSRP is adjusted only when the number of remaining candidate resources in the resource selection window is less than 20% of the number of all candidate resources included in the resource selection window. Moreover, even if the threshold value RSRP is regulated, the number of available resources is also limited. In other words, the value of X limits the number of resources available. This reduces the efficiency of resource selection.

The essence of the invention

Embodiments of the present application provide a resource selection method and an apparatus for improving resource selection efficiency.

According to a first aspect, a first resource selection method is implemented. The method includes: selecting a first resource for the first data from candidate resources included in a resource pool, where the candidate resources include resources whose received reference signal power is less than or equal to a first threshold value; and selecting at least one resource for the first data from the candidate resource, different from the first resource in the candidate resources, based on the first resource and the first slot, where the first slot includes a first time slot that satisfies the requirements for two adjacent resources in the selected first resource and the selected at least one resource, and/or includes a first frequency slot that satisfies the requirements of two adjacent resources in the selected first resource and the selected at least one resource, where the number of candidate resources is greater than or equal to X% from the number of all resources included in the resource pool, and the value of X corresponds to the following condition:

the value of X is set based on the target amount of resources;

the value of X is set based on the target amount of resources and the first time interval;

the value of X is set based on the target amount of resources, the first time slot and the first frequency slot; or

the value of X is set based on service priority.

The total number of resources from the first resource and at least one resource is less than or equal to the target number of resources.

The method may be performed using a first communication device. The first communication device may be a communication device or may be a communication device, such as a chip, that can support the communication device to implement a function required in the method. For example, the first communication device is the first terminal device. For example, the first terminal device may be a terminal device, may be a chip located in the terminal device to implement a terminal device function, or may be another component configured to implement a terminal device function. In the following description of the process, an example is used in which the first communication device is the first terminal device.

In this embodiment of the present application, the number of available candidate resources included in the resource pool is greater than or equal to X% of the number of all candidate resources included in the resource pool. The value of X can be set based on various factors, for example, can be set based on the number of resources to be selected, can be set based on the number of resources to be selected and the first time slot, can be set based on the number of resources that must be selected, the first time slot and the first frequency slot, or can be set based on service priority. For example, when the number of resources to be selected is large, X may be set to a large value. Alternatively, when service priority is high, X can be set to a large value. If the value of X is large, a large number of resources are available, and the resource selection requirement can be satisfied to the maximum extent possible, which improves the efficiency of resource selection and reduces the complexity of the resource selection process. In addition to this, as many sufficient resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer. Moreover, in this embodiment of the present application, the value of X is not fixed, but can be set based on various requirements, so the resource selection process is more flexible.

In a possible implementation, the first data is sent to a second terminal device on the selected resources. The selected resources include, for example, a first resource and at least one resource.

Once resources are selected, the first data can be sent to the selected resources. For example, the total number of resources of the first resource and at least one resource is greater than or equal to the target number of resources. In this case, the resource selection process is stopped and the first data can be sent to the second terminal device on the first resource and the at least one resource. Alternatively, the total number of resources among the first resource and at least one resource is less than the target number of resources, but the number of times the resources are reselected is greater than or equal to the specified number of times. In this case, the resource selection process is stopped and the first data can be sent to the second terminal device on the first resource and the at least one resource. The specified number of times is, for example, specified in the protocol, configured by the network device, or determined by the first terminal device.

In an optional implementation, the target amount of resources is related to the QoS of the first data and/or resource pool configuration information.

In other words, the target amount of resources may be related to the QoS of the service to which the first data belongs. For example, if the QoS of the first data is high, a large target amount of resources can be set, and transmission reliability can be improved by performing multiple transmissions. Alternatively, if the QoS of the first data is low, a small target amount of resources can be set. In this way, transmission costs can be reduced and resources can be saved. Alternatively, the target amount of resources may be associated with resource pool configuration information. For example, the resource pool configuration information may indicate the maximum number of resources to be selected once from the resource pool, and the target number of resources is also, for example, the number of resources to be selected once. In this case, the target number of resources may be less than or equal to the maximum number of resources specified in the resource pool configuration information.

In an optional implementation, the value of X is set based on the number of resources to be selected, including:

a larger resource target, which indicates a larger X value.

A larger target number of resources (in other words, a larger target number of resources) indicates a larger number of resources that need to be selected. In this case, the value of X can be increased so that the number of candidate resources is large. A larger number of candidate resources indicates a larger selection range and therefore indicates a higher probability that the resource can be selected. In this way, the resource selection requirement can be satisfied to the maximum extent possible, thereby increasing the efficiency of resource selection and reducing the complexity of the resource selection process. In addition to this, as many resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer.

In an optional implementation, the value of X is set based on the target amount of resources, and the first time interval includes:

when the target amount of resources is fixed, a smaller first time interval that indicates a larger value of X.

When the target number of resources is fixed, a smaller first time interval may indicate a larger number of resources to be selected. In this case, the value of X can be increased so that the number of candidate resources is large. A larger number of candidate resources indicates a larger selection range and therefore indicates a higher probability that the resource can be selected. In this way, the resource selection requirement can be satisfied to the maximum extent possible, thereby increasing the efficiency of resource selection and reducing the complexity of the resource selection process. In addition to this, as many resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer.

In an optional implementation, the value of X is set based on the target amount of resources, the first time slot and the first frequency slot includes:

when the target amount of resources and the first time interval are fixed, a smaller first frequency interval which indicates a larger value of X.

When the target number of resources and the first time interval are fixed, a smaller first frequency interval may indicate a larger number of resources to be selected. In this case, the value of X can be increased so that the number of candidate resources is large. A larger number of candidate resources indicates a larger selection range and therefore indicates a higher probability that the resource can be selected. In this way, the resource selection requirement can be satisfied to the maximum extent possible, thereby increasing the efficiency of resource selection and reducing the complexity of the resource selection process. In addition to this, as many sufficient resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer.

In an optional implementation, what the value of X is set based on service priority includes:

higher service priority, which indicates a larger X value.

A higher service priority indicates that the probability of successful resource selection should be ensured to the maximum extent possible. In this case, the value of X can be increased so that the number of candidate resources is large. A larger number of candidate resources indicates a larger selection range and therefore indicates a higher probability that the resource can be selected. In this way, the resource selection requirement can be satisfied to the maximum extent possible, thereby increasing the efficiency of resource selection and reducing the complexity of the resource selection process. In addition to this, as many sufficient resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer.

In an optional implementation, the method further includes:

determining that there is no available candidate resource other than the first resource and the third resource among the candidate resources, and that the total number of resources among the first resource and the third resource is less than the target number of resources, where the third resource includes the selected resource, different from the first resource in the candidate resources;

selecting a second resource from the candidate resources; And

selecting one or more resources for the first data from candidate resources other than the second resource in the candidate resources based on the second resource and the first interval.

In this embodiment of the present application, if the total number of resources among the first resource and the at least one resource is greater than or equal to the target number of resources, the first terminal device may stop the resource selection process and send first data on the selected resources. Alternatively, if the total number of resources among the first resource and at least one resource is less than the target number of resources, and a candidate resource that satisfies the selection condition is in the remaining candidate resource (the selection condition may be considered the first interval) , the first terminal device can continue to make selections. Alternatively, if the total number of resources among the first resource and the at least one resource is less than the target number of resources, but the remaining candidate resource does not have a candidate resource that satisfies the selection condition, the first terminal device may stop the resource selection process. Although the number of selected resources is less than the target number of resources, the first terminal device still sends the first data on the selected resources. Alternatively, in this case, the first terminal device may reselect. The number of selected resources may be greater than or equal to the target number of resources, as much as possible by resource selection, to satisfy the requirement of first data transmission and to increase the probability of successful resource selection.

In a possible implementation, the first data is sent to a second terminal device on the selected resources. The selected resources include, for example, a second resource and one or more resources.

Once resources are selected, the first data can be sent to the selected resources. For example, the total quantity of the second resource and one or more resources is greater than or equal to the target quantity of resources. In this case, the resource selection process is stopped and the first data can be sent to the second terminal device on the second resource and one or more resources. Alternatively, the total amount of the second resource and one or more resources is less than the target amount of resources, but the number of times the resources were reselected was greater than or equal to the target number of times. In this case, the resource selection process is stopped and the first data can be sent to the second terminal device on the second resource and one or more resources. The specified number of times is, for example, specified in the protocol, configured by the network device, or determined by the first terminal device.

In an optional implementation, selecting at least one resource from a candidate resource other than a first resource in the candidate resources based on the first resource and the first slot includes:

moving a time domain position of a first resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving, in part or in whole, as at least at least one resource, where the first slot includes a first time slot;

moving a frequency domain position of a first resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by the move, in part or in whole as at least at least one resource, where the first slot includes a first frequency slot; or

moving the position of a first resource in the time domain as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving, in part or in whole, as at least one resource, where the first slot includes a first time slot and first frequency interval.

This selection method can ensure that the interval between two adjacent resources in the selected resources is equal to the first interval, so the selected resources can satisfy the selection condition.

In an optional implementation, selecting at least one resource from a candidate resource other than a first resource in the candidate resources based on the first resource and the first slot includes:

moving a time domain position of a first resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, where the selected resource is partially or the entirety of at least one resource, the first range does not include a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval includes the first time interval;

moving a frequency domain position of a first resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not include a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval includes the first frequency domain interval; or

moving the position of the first time domain resource as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency bin, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by movement, where the selected resource is partly or wholly of at least one resource, the third range not including the position in the time domain between the time domain reference position and the time domain position obtained by moving, or the frequency domain position between the frequency domain reference position and the frequency domain position obtained by moving, and the first interval includes the first time interval and first frequency interval.

In this selection method, the interval requirements between selected resources are low. For example, the time interval between adjacent resources does not need to be strictly the first time interval, and only needs to be greater than or equal to the first time interval. Alternatively, the frequency interval between adjacent resources need not be strictly the first frequency interval, and only need to be greater than or equal to the first frequency interval. Thus, the selection conditions become softer, facilitate the selection of resources to a greater extent, and increase the likelihood of successful selection of resources.

According to a second aspect, a second resource selection method is implemented. The method includes: selecting a first resource for the first data from a first candidate resource included in a first resource pool, where the first candidate resource includes a resource whose received reference signal power is less than or equal to a first threshold value; determining, based on the first resource and the first slot, that an available candidate resource is not present in a candidate resource other than the first resource and a third resource in the first candidate resource, and that the total amount of the first resource and the third resource is less than the target amount of resources where the third resource includes a selected resource different from the first resource in the candidate resource, and the first slot includes a first time slot that satisfies the requirements of two adjacent resources in the selected first resource and the selected third resource, and/or includes itself a first frequency slot that satisfies the requirements of two adjacent resources in the selected first resource and the selected third resource; replacing the first resource pool with a second resource pool; and selecting, based on the second resource in the second resource pool and the first slot, at least one resource in the candidate resource different from the second resource in the second candidate resource included in the second resource pool, where the second candidate resource includes the resource , whose received reference signal power is less than or equal to the first threshold value.

The method may be performed by a second communication device. The second communication device may be a communication device or may be a communication device, such as a chip, that can support the communication device to implement a function required in the method. For example, the second communication device is the first terminal device. For example, the first terminal device may be a terminal device, may be a chip located in the terminal device to implement a terminal device function, or may be another component configured to implement a terminal device function. In the following description of the process, an example is used in which the second communication device is the first terminal device.

In the resource selection process provided in this embodiment of the present application, if the number of selected resources is less than the target number of resources and there is no available candidate resource that satisfies the selection condition, reselection may be performed. For example, a new candidate resource may be introduced by moving the resource pool so that a maximum number of resources can be selected to increase the likelihood of successful resource selection. In addition, this embodiment of the present application further improves the overall resource allocation procedure and mode-2 design in NR-V2X.

In a possible implementation, the first data is sent to a second terminal device on the selected resources. The selected resources include, for example, a second resource and at least one resource.

Once resources are selected, the first data can be sent to the selected resources. For example, the total amount of the second resource and the at least one resource is greater than or equal to the target amount of resources. In this case, the resource selection process is stopped and the first data can be sent to the second terminal device on the second resource and the at least one resource. Alternatively, the total amount of the second resource and the at least one resource is less than the target amount of resources, but the number of times the resources are reselected is greater than or equal to the target number of times. In this case, the resource selection process is stopped and the first data can be sent to the second terminal device on the second resource and the at least one resource. The specified number of times is, for example, specified in the protocol, configured by the network device, or determined by the first terminal device.

In an optional implementation, the target amount of resources is related to the QoS of the first data and/or configuration information of the first resource pool.

In other words, the target amount of resources may be related to the QoS of the service to which the first data belongs. For example, if the QoS of the first data is high, a large target amount of resources can be set, and transmission reliability can be improved by performing multiple transmissions. Alternatively, if the QoS of the first data is low, a small target amount of resources can be set. In this way, transmission costs can be reduced and resources can be saved. Alternatively, the target amount of resources may be associated with resource pool configuration information (eg, associated with configuration information of a first resource pool). For example, the resource pool configuration information may indicate a maximum number of resources to be selected once from the first resource pool, and the target number of resources is also, for example, the number of resources to be selected once. In this case, the target number of resources may be less than or equal to the maximum number of resources specified in the configuration information of the first resource pool.

In an optional implementation,

the second resource and the first resource are the same resource; or

the method further includes: selecting a second resource from a candidate resource included in the second resource pool.

The second resource and the first resource may be the same resource. This method applies to the case where the first resource is in the second resource pool. That is, if the first resource is in the second resource pool, the first terminal device may not need to reselect the first resource, but continues to select a subsequent resource with reference to the first resource, thereby shortening the resource selection step. Alternatively, the second resource and the first resource may be different resources. For example, the first resource is not in the second resource pool. In this case, the first terminal device may reselect a resource from the second resource pool. Alternatively, even if the first resource is in the second resource pool, the first terminal device may still reselect a resource from the second resource pool. Reselecting resources increases the likelihood of successful final resource selection.

In an optional implementation, replacing the first resource pool with a second resource pool includes:

moving a terminal position in the time domain of the first resource pool back in the time domain by a first time period to obtain a second resource pool; or

moving a starting position in the time domain of the first resource pool back in the time domain for a second time period and moving an ending position in the time domain of the first resource pool back in the time domain for a third time period to obtain a second resource pool.

For example, the first terminal device may move the end position in the time domain of the first resource pool back in the time domain by a first time period to obtain a second resource pool. For example, the starting position in the time domain of the first resource pool is T1, and the ending position in the time domain of the first resource pool is T2. The first terminal device may move an ending time domain position of the first resource pool back from T2 to a first time period in T3 to obtain a second resource pool, where the starting time domain position of the second resource pool is T1, and the ending time domain position of the second resource pool is T3. In other words, the first resource pool is thereby expanded such that the expanded first resource pool (namely, the second resource pool) includes more candidate resources. This method is equivalent to shifting the position in the time domain of the resource pool to increase the candidate resources to increase the minimum range that corresponds to X and is intended for the final and actual selection of resources. Thus, this method can also be considered as a way to implicitly configure the value of X.

As another example, the first terminal device may move the starting position in the time domain of the first resource pool back in the time domain for a second time period and move the ending position in the time domain of the first resource pool back in the time domain for the third time period to obtain a second resource pool . For example, the starting position in the time domain of the first resource pool is T1, and the ending position in the time domain of the first resource pool is T2. The first terminal device may move a starting time domain position of the first resource pool back from T1 to a second time period at T4 and may move an ending time domain position of the first resource pool back from T2 to a third time period at T5 to obtain a second resource pool, where the starting position in the time domain of the second resource pool is T4, and the ending position in the time domain of the second resource pool is T5. Thus, the first resource pool and the second resource pool may or may not overlap, and the length of the time domain of the first resource pool may or may not be equal to the length of the time domain of the second resource pool. This method of replacing the resource pool is more flexible. In addition, a new candidate resource is introduced, or the initial candidate resources may even be completely replaced, so the probability of successful resource selection can be increased.

In an optional implementation, selecting, based on the second resource and the first slot, at least one resource from a candidate resource other than the second resource in the second candidate resource included in the second resource pool includes:

moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving, in part or in whole, as at least at least one resource, where the first slot includes a first time slot;

moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain into a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by the move, in part or in whole as at least at least one resource, where the first slot includes a first frequency slot; or

moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving, in part or in whole, as at least one resource, where the first slot includes a first time slot and first frequency interval.

This selection method can ensure that the interval between two adjacent resources in the selected resources is equal to the first interval, so the selected resources can satisfy the selection condition.

In an optional implementation, selecting, based on the second resource and the first slot, at least one resource from a candidate resource other than the second resource in the second candidate resource included in the second resource pool includes:

moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the first range does not include a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval includes the first time interval;

moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not include a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval includes the first frequency domain interval; or

moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by movement, where the selected resource is partly or wholly of at least one resource, the third range not including the position in the time domain between the time domain reference position and the time domain position obtained by moving, or the frequency domain position between the frequency domain reference position and the frequency domain position obtained by moving, and the first interval includes the first time interval and first frequency interval.

In this selection method, the interval requirements between selected resources are low. For example, the time interval between adjacent resources does not need to be strictly the first time interval, and only needs to be greater than or equal to the first time interval. Alternatively, the frequency interval between adjacent resources need not be strictly the first frequency interval, and only need to be greater than or equal to the first frequency interval. Thus, the selection conditions become softer, facilitate the selection of resources to a greater extent, and increase the likelihood of successful selection of resources.

According to a third aspect, a communication device is provided. For example, the communication device is the first communication device described above. The first communication device is configured to perform a method according to any of the first aspect or possible implementations. In particular, the first communication device may include a module configured to perform a method according to any of the first aspect or possible implementations, for example, may include a processing module and a transceiver module. For example, the transceiver module may include a sending module and a receiving module. The sending module and the receiving module may be different function modules, or they may be the same function module but perform different functions. For example, the first communication device is the first terminal device. For example, the first terminal device is a communications device, chip, or other component located within the communications device. For example, the communication device is a terminal device. In the following, an example is used in which the first communication device is the first terminal device. For example, the transceiver module may alternatively be implemented using a transceiver, and the processing module may alternatively be implemented using a processor. Alternatively, the sending module may be implemented using a transmitter, and the receiving module may be implemented using a receiver. The transmitter and receiver may be different functional modules or may be the same functional module but perform different functions. If necessary, the first communication device may further include a storage module. For example, a storage module may be implemented using memory. The memory may be configured to store computer instructions. The processor may call and execute computer instructions to implement the method according to any of the first aspect or possible implementations. The memory may be part of the first communication device. Alternatively, the first communication device may not include a memory, the memory is located external to the first communication device, and the processor may call computer instructions stored in external memory. If the first communication device is a communication device, the transceiver is implemented, for example, using an antenna, a feeder and a codec in the communication device. Alternatively, if the first communication device is a chip located in the communication device, then the transceiver (or transmitter and receiver) is, for example, a communication interface in the chip. The communication interface is connected to an RF transceiver component in a communication device to realize the reception and sending of information through the RF transceiver component. While describing the third aspect, an example is continued to be used for description in which the first communication device is a first terminal device and includes a processing unit and a transceiver unit.

The processing module is configured to select a first resource for the first data from candidate resources included in the resource pool, where the candidate resources include resources whose received reference signal power is less than or equal to the first threshold value.

The processing module is further configured to select at least one resource for the first data from the candidate resources, other than the first resource in the candidate resources, based on the first resource and the first slot, where the first slot includes a first time slot that satisfies the requirements to two adjacent resources in the selected first resource and the selected at least one resource, and/or includes a first frequency slot that satisfies the requirements of the two adjacent resources in the selected first resource and the selected at least one resource.

The number of candidate resources is greater than or equal to X% of the number of all resources included in the resource pool, and the value of X meets the following condition:

the value of X is set based on the target amount of resources;

the value of X is set based on the target amount of resources and the first time interval;

the value of X is set based on the target amount of resources, the first time slot and the first frequency slot; or

the value of X is set based on service priority.

The total number of resources from the first resource and at least one resource is less than or equal to the target number of resources.

In an exemplary implementation, the transceiver module is configured to send the first data to a second terminal device on selected resources. The selected resources include, for example, a first resource and at least one resource.

In an optional implementation, the target amount of resources is related to the QoS of the first data and/or resource pool configuration information.

In a possible implementation, the value of X is set based on the number of resources to be selected includes:

a larger resource target, which indicates a larger X value.

In a possible implementation, the value of X is set based on the target amount of resources and the first time interval includes:

when the target amount of resources is fixed, a smaller first time interval that indicates a larger value of X.

In an exemplary implementation, the value of X is set based on the target amount of resources, the first time slot and the first frequency slot includes:

when the target amount of resources and the first time interval are fixed, a smaller first frequency interval which indicates a larger value of X.

In a possible implementation, the value of X being set based on service priority includes:

higher service priority, which indicates a larger X value.

In a possible implementation, the processing module is additionally configured to:

determining that there is no available candidate resource other than the first resource and the third resource among the candidate resources, and that the total number of resources among the first resource and the third resource is less than the target number of resources, where the third resource includes the selected resource, different from the first resource in the candidate resources;

selecting a second resource from the candidate resources; And

selecting one or more resources for the first data from candidate resources other than the second resource, in the resource candidates based on the second resource and the first interval.

In an exemplary implementation, the transceiver module is further configured to send the first data to the second terminal device on selected resources. The selected resources include, for example, a second resource and one or more resources.

In an exemplary implementation, the processing module is configured to select at least one resource from a candidate resource other than the first resource in the candidate resources based on the first resource and the first slot as follows:

moving a time domain position of the first resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving part or all of the at least one resource where the first interval includes a first time interval;

moving a frequency domain position of the first resource as a reference frequency domain position up and/or down in the frequency domain by a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by moving part or all of the at least one resource where the first interval includes the first frequency interval; or

moving the position of a first resource in the time domain as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving part or all of at least one resource, where the first slot includes a first time slot and a first frequency slot .

In an exemplary implementation, the processing module is configured to select at least one resource from a candidate resource other than the first resource in the candidate resources based on the first resource and the first slot as follows:

moving a time domain position of a first resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, where the selected resource is partially or the entirety of at least one resource, the first range does not include a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval includes the first time interval;

moving a frequency domain position of a first resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not include a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval includes the first frequency domain interval; or

moving the position of a first resource in the time domain as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency slot, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by movement, where the selected resource is partly or wholly of at least one resource, the third range not including the position in the time domain between the time domain reference position and the time domain position obtained by moving, or the frequency domain position between the frequency domain reference position and the frequency domain position obtained by moving, and the first interval includes the first time interval and first frequency interval.

For technical effects achieved in the third aspect or possible implementations, reference should be made to the description of the technical effects achieved in the first aspect or corresponding implementations.

According to a fourth aspect, a communication device is provided. For example, the communication device is the second communication device described above. The second communication device is configured to perform a method according to any of the second aspect or possible implementations. In particular, the second communication device may include a module configured to perform a method according to any of the second aspect or possible implementations, for example, including a processing module and a transceiver module. For example, the transceiver module may include a sending module and a receiving module. The sending module and the receiving module may be different function modules, or they may be the same function module but perform different functions. For example, the second communication device is the first terminal device. For example, the first terminal device is a communications device, chip, or other component located within the communications device. For example, the communication device is a terminal device. Next, an example is used in which the second communication device is the first terminal device. For example, the transceiver module may alternatively be implemented using a transceiver, and the processing module may alternatively be implemented using a processor. Alternatively, the sending module may be implemented using a transmitter, and the receiving module may be implemented using a receiver. The transmitter and receiver may be different functional modules or may be the same functional module but perform different functions. If necessary, the second communication device may further include a storage module. For example, a storage module may be implemented using memory. The memory may be configured to store computer instructions. The processor may call and execute computer instructions to implement the method according to any of the second aspect or possible implementations. The memory may be part of the second communication device. Alternatively, the second communication device may not include a memory, the memory may be located external to the second communication device, and the processor may call computer instructions stored in the external memory. If the second communication device is a communication device, the transceiver is implemented, for example, using an antenna, a feeder and a codec in the communication device. Alternatively, if the second communication device is a chip located in the communication device, then the transceiver (or transmitter and receiver) is, for example, a communication interface on the chip. The communication interface is connected to an RF transceiver component in a communication device to realize the reception and sending of information through the RF transceiver component. In the process of describing the fourth aspect, an example in which the second communication device is a first terminal device and includes a processing module and a transceiver module continues to be used for description.

The processing module is configured to select a first resource for the first data from a first candidate resource included in the first resource pool, where the first candidate resource includes a resource whose received reference signal power is less than or equal to the first threshold value.

The processing module is further configured to determine, based on the first resource and the first slot, that an available candidate resource is not present in a resource other than the first resource and a third resource in the first candidate resource, and that the total number of resources among the first resource and of the third resource is less than the target amount of resources, where the third resource includes a selected resource different from the first resource in the candidate resource, and the first slot includes a first time slot that satisfies the requirements of two adjacent resources in the selected first resource and the selected third resource , and/or includes a first frequency slot that satisfies requirements for two adjacent resources in the selected first resource and the selected third resource.

The processing module is further configured to replace the first resource pool with a second resource pool.

The processing module is further configured to select, based on the second resource in the second resource pool and the first slot, at least one resource from the candidate resource different from the second resource in the second candidate resource included in the second resource pool, where the second resource is the candidate includes a resource whose received reference signal power is less than or equal to the first threshold value.

In an exemplary implementation, the transceiver module is further configured to send the first data to the second terminal device on selected resources. The selected resources include, for example, a second resource and at least one resource.

In an optional implementation, the target amount of resources is related to the QoS of the first data and/or configuration information of the first resource pool.

In a possible implementation,

the second resource and the first resource are the same resource; or

the processing module is further configured to select a second resource from a candidate resource included in the second resource pool.

In a possible implementation, the processing module is configured to replace the first resource pool with a second resource pool as follows:

moving a terminal position in the time domain of the first resource pool back in the time domain by a first time period to obtain a second resource pool; or

moving a starting position in the time domain of the first resource pool back in the time domain for a second time period and moving an ending position in the time domain of the first resource pool back in the time domain for a third time period to obtain a second resource pool.

In an exemplary implementation, the processing module is configured to select, based on the second resource and the first slot, at least one resource from candidate resources other than the second resource in the second candidate resource included in the second resource pool, as follows:

moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving, in part or in whole, as at least at least one resource, where the first slot includes a first time slot;

moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain into a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by the move, in part or in whole as at least at least one resource, where the first slot includes a first frequency slot; or

moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving, in part or in whole, as at least one resource, where the first slot includes a first time slot and first frequency interval.

In an exemplary implementation, the processing module is configured to select, based on the second resource and the first slot, at least one resource from candidate resources other than the second resource in the second candidate resource included in the second resource pool, as follows:

moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the first range does not include a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval includes the first time interval;

moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not include a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval includes the first frequency domain interval; or

moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency slot, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by movement, where the selected resource is partly or wholly of at least one resource, the third range not including the position in the time domain between the time domain reference position and the time domain position obtained by moving, or the frequency domain position between the frequency domain reference position and the frequency domain position obtained by moving, and the first interval includes the first time interval and first frequency interval.

For technical effects achieved in the fourth aspect or possible implementations, reference should be made to the description of the technical effects achieved in the second aspect or corresponding implementations.

According to the fifth aspect, a communication device is provided. For example, the communication device is the first communication device described above. The communication device includes one or more processors. If necessary, the communication device may further include a memory configured to store computer instructions. One or more processors are coupled to the memory for implementing a method in accordance with any of the first aspect or possible implementations. Alternatively, the first communication device may not include a memory, and the memory may be located external to the first communication device. Additionally, the first communication device may further include a communication interface configured to communicate with another device or apparatus. The processor, memory, and communication interface are connected to each other to implement the method in accordance with any of the first aspect or possible implementations. For example, when the processor executes computer instructions stored in memory, the first communication device is able to perform a method according to any of the first aspect or possible implementations. For example, the first communication device is the first terminal device. For example, the first terminal device is a communications device, chip, or other component located within the communications device. For example, the communication device is a terminal device.

If the first communication device is a communication device, the communication interface is implemented using, for example, a transceiver (or transmitter and receiver) in the communication device. For example, a transceiver is implemented using an antenna, a feeder, and a codec in a communication device. Alternatively, if the first communication device is a chip located in the communication device, the communication interface is, for example, an input/output interface such as an input/output pin of the chip. The communication interface is connected to an RF transceiver component in a communication device to realize receiving and sending information through the RF transceiver component.

According to the sixth aspect, a communication device is provided. For example, the communication device is the second communication device described above. The communication device includes one or more processors. If necessary, the communication device may further include a memory configured to store computer instructions. One or more processors are coupled to the memory for implementing a method according to any of the second aspect or possible implementations. Alternatively, the second communication device may not include a memory, and the memory may be located external to the second communication device. Additionally, the second communication device may further include a communication interface configured to communicate with another device or device. The processor, memory, and communication interface are connected to each other to implement the method according to any of the second aspect or possible implementations. For example, when the processor executes computer instructions stored in the memory, the second communication device is enabled to perform a method according to any of the second aspect or possible implementations. For example, the second communication device is the first terminal device. For example, the first terminal device is a communications device, chip, or other component located within the communications device. For example, the communication device is a terminal device.

If the second communication device is a communication device, the communication interface is implemented using, for example, a transceiver (or transmitter and receiver) in the communication device. For example, a transceiver is implemented using an antenna, a feeder, and a codec in a communication device. Alternatively, if the second communication device is a chip located in the communication device, the communication interface is, for example, an input/output interface such as an input/output pin of the chip. The communication interface is connected to an RF transceiver component in a communication device to realize receiving and sending information through the RF transceiver component.

According to the seventh aspect, a communication system is implemented. The communication system includes a communication device according to the third aspect or a communication device according to the fifth aspect.

According to the eighth aspect, a communication system is implemented. The communication system includes a communication device according to the fourth aspect or a communication device according to the sixth aspect.

According to a ninth aspect, a computer-readable storage medium or a non-volatile storage medium is provided. The computer-readable storage medium or non-volatile storage medium is configured to store computer instructions or a program. When computer instructions or a program is executed/runs on a computer, the computer is enabled to perform a method in accordance with any of the first aspect or possible implementations.

According to a tenth aspect, a computer-readable storage medium or a non-volatile storage medium is provided. The computer-readable storage medium or non-volatile storage medium is configured to store computer instructions or a program. When the computer instructions or program is executed/runs on the computer, the computer is enabled to perform the method according to any of the second aspect or possible implementations.

In an eleventh aspect, a computer program product is provided including instructions. The computer program product is configured to store computer instructions. When computer instructions are executed on a computer, the computer is capable of executing a method in accordance with any of the first aspect or possible implementations.

According to the twelfth aspect, a computer program product is provided including instructions. The computer program product is configured to store computer instructions. When the computer instructions are executed on the computer, the computer is enabled to execute the method according to any of the second aspect or possible implementations.

In embodiments of the present application, the value of X can be set based on various factors to best satisfy resource selection requirements, thereby increasing the efficiency of resource selection and reducing the complexity of the resource selection process. In addition to this, as many sufficient resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer. Moreover, in embodiments of the present application, the value of X is not fixed, and can be set based on various requirements so that the resource selection process is more flexible.

Brief description of drawings

Figure 1 is a schematic representation of several types of V2X;

Fig. 2 is a schematic representation of the dynamic mode in the base station allocation mode, namely mode-1;

Fig. 3 is a schematic representation of a frequency domain resource corresponding to one slot;

Fig. 4 is a block diagram of a reserved resource of a terminal device;

Figure 5 is a schematic representation of a candidate resource in the resource selection window;

FIG. 6 is a schematic diagram of an application scenario according to an embodiment of the present application; FIG.

FIG. 7 is a flowchart of a first resource selection method according to an embodiment of the present application; FIG.

FIG. 8 is a flowchart of a resource selection method used by the first terminal device when the first frequency slot is 0, according to an embodiment of the present application; FIG.

9A and 9B are diagrams of resource selection performed by the first terminal device when the target resource amount is 2, according to an embodiment of the present application;

FIG. 10A and FIG. 10B are diagrams of resource selection performed by the first terminal device when the target resource amount is 3, according to an embodiment of the present application; FIG.

FIG. 11A and FIG. 11B are schematic diagrams of resource selection performed by the first terminal device when the target resource amount is 4, according to an embodiment of the present application; FIG.

FIG. 12 is a flowchart of a resource selection method used by the first terminal device when the first frequency slot is 0, according to an embodiment of the present application; FIG.

FIG. 13 is a schematic diagram of resource selection performed by the first terminal device when the target resource amount is 3, according to an embodiment of the present application; FIG.

FIG. 14 is a flowchart of a second resource selection method according to an embodiment of the present application; FIG.

FIG. 15 is a schematic diagram of a method for replacing a resource pool with a first terminal device according to an embodiment of the present application; FIG.

FIG. 16 is a flowchart of a resource selection method used by the first terminal device when the first frequency slot is 0, according to an embodiment of the present application; FIG.

FIG. 17 is a schematic diagram of resource selection performed by the first terminal device when the target resource number is 4, according to an embodiment of the present application; FIG.

FIG. 18 is a flowchart of a resource selection method used by the first terminal device when the first frequency slot is 0, according to an embodiment of the present application; FIG.

FIG. 19 is a schematic diagram of resource selection performed by the first terminal device when the target resource number is 4, according to an embodiment of the present application; FIG.

FIG. 20 is a schematic block diagram of a first terminal device of a first type according to an embodiment of the present application; FIG.

FIG. 21 is a block diagram of a first terminal device of a second type according to an embodiment of the present application; FIG.

FIG. 22 is a schematic block diagram of a communication device according to an embodiment of the present application; FIG.

FIG. 23 is another schematic block diagram of a communication device according to an embodiment of the present application; FIG. And

FIG. 24 is another block diagram of a communication device according to an embodiment of the present application.

Detailed Description of the Invention

In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clear, embodiments of the present application are described in detail below with reference to the accompanying drawings.

In the following description, certain terms used in the embodiments of the present application are explained and described in order to assist one skilled in the art to better understand the present invention.

(1) A terminal device includes a device that provides a voice and/or data connection for a user. Specifically, the terminal device includes a device that provides voice communications for a user, includes a device that provides a data connection for a user, or includes a device that provides a voice and data connection for a user. For example, the terminal device may include a portable device having a wireless connection function or a processing device connected to a wireless modem. The terminal device may communicate with the core network through a radio access network (RAN) and exchange voice or data with the RAN or exchange voice and data with the RAN. The terminal device may include a user equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device (D2D) terminal device, a terminal device for communication between a vehicle and any other objects. (vehicle-to-everything, V2X), terminal device for machine-to-machine/machine-type communication (M2M/MTC), terminal device for Internet of things (IoT), subscriber device subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal (user terminal), user agent (user agent), user device (user device), etc. For example, a terminal device may include a mobile telephone (or a telephone referred to as a "cellular" telephone), a computer with a mobile terminal device, or a handheld, handheld, portable, or computer-integrated mobile device. For example, the terminal device is a personal communications service (PCS) telephone, a cordless telephone, a session initiation protocol (SIP) telephone, a wireless local loop (WLL), or a personal digital assistant. (personal digital assistant, PDA). The terminal device further includes a limited-capability device, such as a low-power device, a limited-storage device, or a limited-computing device. For example, a terminal device includes a device for receiving and interpreting information, such as a bar code, radio frequency identification (RFID), sensor, global positioning system (GPS), or laser scanner.

By way of example, and not limitation, in embodiments of the present application, the terminal device may alternatively be a wearable device. A wearable device may also be referred to as a wearable smart device, smart wearable device, or the like. and is an umbrella term for wearable devices that are designed by applying wearable technology to everyday wearable smart designs such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that can be worn directly on the body or integrated into a user's clothing or accessory. A wearable device is not only a hardware device, but also realizes powerful functions through software support, data exchange and cloud interaction. In a broad sense, wearable smart devices include full-featured and large-size devices that are capable of implementing all or some functions independent of a smartphone, such as smart watches or smart glasses, and include devices that focus on only one type of application function and must jointly function with other devices such as smartphones, such as various smart bracelets, smart helmets or smart jewelry, to monitor vital signs.

If the various terminal devices described above are located in a vehicle (eg, located in a vehicle or installed in a vehicle), all terminal devices can be considered as vehicle-mounted terminal devices. For example, vehicle-mounted terminal devices are also called on-board units (OBUs).

In embodiments of the present application, the terminal device may further include a relay. Alternatively, it can be understood that any device that can communicate with a base station can be considered a terminal device.

In embodiments of the present application, the device for implementing the functions of a terminal device may be a terminal device, or may be a device, such as a chip system, that can support the terminal device to implement the functions. The device can be installed in a terminal device. In embodiments of the present application, the chip system may include a chip, or may include a chip and other discrete component. In the technical solutions presented in the embodiments of the present application, the technical solutions presented in the embodiments of the present application are described using an example in which the device for implementing terminal functions is a terminal device.

(2) The network device includes, for example, an access network (AN) device such as a base station (eg, an access point), and may be a device that communicates with a wireless terminal device over an air interface through one or more cells in the access network. Alternatively, for example, the network device in V2X technology is a road side unit (RSU). The base station may be configured to perform translation between a frame received over the air and an Internet protocol (IP) packet and serve as a router between the terminal device and other parts of the access network, where other parts of the access network may include the IP network. An RSU may be a fixed infrastructure entity supporting a V2X application and may exchange messages with another entity supporting a V2X application. The network device may further coordinate control of air interface attributes. For example, a network device may include an evolved NodeB (NodeB, eNB or e-NodeB, evolved NodeB) in an LTE system or a long term evolution-advanced (LTE-A) system, which may include a next generation NodeB (next generation nodeB, gNB) in the NR system of 5th generation (5G) mobile communication technology (also called an NR system for short) or may include a centralized unit (CU) and a distributed unit , DU) in the cloud radio access network (Cloud RAN) system. This is not limited to embodiments of the present application.

The network device may further include an underlying network device, and the underlying network device includes, for example, an access and mobility management function (AMF). Embodiments of the present application generally relate to an access network. Therefore, the network device listed below is a network access device unless otherwise noted.

In embodiments of the present application, the device for implementing the network device functions may be a network device, or may be a device, such as a chip system, that can support the network device to implement the functions. The device can be installed in a network device. In the technical solutions presented in the embodiments of the present application, the technical solutions presented in the embodiments of the present application are described using an example in which a device for implementing functions of a network device is a network device.

(3) V2X refers to the interaction between a vehicle and any entity on the network, and is the basic and key technology of future intelligent vehicles, autonomous driving, and intelligent transportation systems. In V2X, a special requirement for V2X application is to optimize based on the existing device-to-device (D2D) communication technology to further reduce the access latency of the V2X device and resolve the resource contention problem.

In particular, V2X additionally includes several application requirements regarding vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-vehicle communication vehicle-to-pedestrian (V2P) and vehicle-to-network (V2N) connections, as shown in FIG. 1. V2V refers to communication between vehicles. V2P refers to the communication between a vehicle and a person (including a pedestrian, cyclist, driver or passenger). V2I refers to the communication between a vehicle and a network device, such as an RSU. In addition to this, V2N communication can be included in V2I. V2N refers to the communication between the vehicle and the base station/network.

V2P can be used to warn a pedestrian or non-motorized vehicle on the road of a hazard. The vehicle can communicate via V2I with the road, or even with other infrastructure such as a traffic light or roadblock, to obtain road control information such as the timing of the traffic signal. V2V can be used to exchange information and reminders between vehicles and is generally applied in safety system to prevent collision between vehicles. Currently, V2N is the most widely used form of Internet of Vehicles. The main function of V2N is to connect the car to a cloud server via a mobile network to use application functions such as navigation, entertainment or anti-theft that are provided by the cloud server.

In V2X, communication is primarily between terminal devices. For transmission modes between terminal devices, the current standard protocol supports broadcast mode, multicast mode and unicast mode.

Broadcast mode: Broadcast mode means that a terminal device acting as a transmitting party sends data in a broadcast mode, and multiple terminal devices can receive sidelink control information (SCI) or a shared sidelink channel ( sidelink shared channel, SSCH) on the transmitting side.

On the side link, a way to ensure that all terminal devices analyze the control information from the transmitting side is that: the transmitting side does not scramble the control information or does not scramble the control information using a scrambling code known to all terminal devices.

Multicast mode: Multicast mode is similar to broadcast mode. The terminal device, which serves as the transmitter, sends data in broadcast mode. The terminal device group may parse the SCI or SSCH.

Unicast mode: In unicast mode, a terminal device sends data to another terminal device, and the other terminal device does not have to or cannot parse the data.

(4) The terms “system” and “network” as used in embodiments of this application may be used interchangeably. The term "at least one" means one or more, and "multiple" means two or more. The term "and/or" describes an association relationship between associated objects and means that three relationships can exist. For example, A and/or B may represent the following cases: only A exists, both A and B exist, and only B exists, where A and B can be singular or plural. The "/" symbol usually indicates an "or" relationship between related objects. The term “at least one of the following elements (parts)” or a similar expression thereof refers to any combination of these elements (parts) including any combination of elements (parts) in the singular or elements (parts) in the plural. For example, at least one element (one part) of a, b or c may represent: a, b, c, ab, ac, bc or abc, where a, b and c may be singular or plural.

Unless otherwise indicated, ordinal terms such as “first” and “second” mentioned in embodiments of this application are used to distinguish multiple objects and are not intended to limit the size, content, sequence, timing, priorities, degree of importance, etc. .P. many objects. For example, the first resource and the second resource are used only to distinguish different resources, but do not indicate differences in priorities, degrees of importance, etc. two resources.

Some basic concepts used in embodiments of the present application have been described above. The following is a description of the technical features of embodiments of the present application.

With the development of wireless communication technologies, people are increasingly demanding high data transmission speeds and user experience, and are also increasingly demanding short-range communication service to get to know and stay in touch with people or things around them. Thus, D2D technology appears. The use of D2D technology can reduce the load on the cellular network, reduce power consumption of user equipment batteries, increase data transfer rates and better meet the needs for short-range communication services. D2D technology allows multiple UEs that support the D2D function to perform direct discovery and direct communication regardless of the presence of network infrastructure. Taking into account the features and advantages of D2D technology, a scenario for using the Internet of Vehicles based on D2D technology is proposed. However, from a security perspective, the latency requirements in this scenario are quite high and cannot be met using existing D2D technology.

Thus, a V2X Internet of Vehicles technology is proposed in a network that uses LTE technology and which is proposed under the ^3rd generation partnership project (3GPP). V2X communication is the communication between the vehicle and any object outside, which includes V2V communication, V2P communication, V2I communication and V2N communication. Let us now turn to figure 1.

V2X communication is intended for high-speed devices represented by vehicles, and represents the basic and key technology that will be used in future scenarios that have fairly high communication latency requirements, such as intelligent vehicle, autonomous driving, and intelligent transportation system scenarios. LTE-V2X communication may support a communication scenario with network coverage and a communication scenario without network coverage, and the resource allocation method in LTE V2X communication may be a network access device scheduling mode, for example, an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) NodeB scheduling mode NodeB, eNB) and UE autonomous selection mode. Based on V2X technology, a vehicle user equipment (vehicle UE, V-UE) can send some information about the V-UE, such as location, speed or intent (turning, paralleling or reversing), to another V-UE in periodic or aperiodic launch mode. Likewise, V-UE receives information from surrounding users in real time.

With the development of NR 5G technologies in the 3GPP standardization organization, NR-V2X 5G will be further developed. For example, NR-V2X 5G can support lower transmission latency, more reliable data transmission, higher throughput and better user experience to meet broader application scenario requirements.

In NR-V2X, there are mainly two resource allocation modes associated with the sidelink: base station resource allocation mode (mode-1) and user autonomous resource selection mode (mode-2). Mode-1 is mainly used for V2X communication with network coverage. The base station centrally performs resource allocation based on the BSR reporting the status of the terminal device. In mode-1, the resource can be allocated dynamically or in preconfiguration mode. The resource allocated by the base station includes an initial resource or a retransmission resource, or includes an initial resource and a retransmission resource.

In dynamic mode-1, the base station allocates a resource to a terminal device on the transmit side using downlink control information (DCI). After receiving the DCI, the transmit-side terminal device sends data to the receive-side terminal device on the resource. After decoding the data received from the transmission-side terminal device, the receiving-side terminal device sends feedback information corresponding to the data to the transmission-side terminal device. For example, the feedback information is a positive acknowledgment (ACK) or a negative acknowledgment (NACK). Then the terminal device on the transmission side forwards the feedback information to the base station. For this process, reference should be made to FIG. 2. In FIG. 2, at time t1, the terminal device on the transmission side receives DCI from the base station and decodes the DCI. The transmitting side terminal device at time t2 sends a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH) to the receiving side terminal device. The receiving end terminal apparatus, at time t3, sends hybrid automatic repeat request (HARQ) information (namely, feedback information) corresponding to the PSSCH or PSCCH to the transmitting end terminal apparatus. The terminal device on the transmission side at time t4 forwards HARQ information to the base station.

In mode-1 preset mode, the base station configures, using higher layer signaling, the corresponding time-frequency resource to use for sending on the sidelink. A transmit-side terminal device can directly send data on a sidelink on a resource configured with higher layer signaling (type-1). Alternatively, the base station sends a DCI to activate the configured resource. After receiving the DCI, the transmitting side terminal device can send data over the sidelink on a resource configured with higher layer signaling (type-2). After receiving sidelink data from a transmission-side terminal device, the reception-side terminal device decodes the sidelink data and then sends HARQ information (namely, feedback information) for the sidelink data to the transmission-side terminal device. Then, the transmitting-side terminal device forwards the HARQ information from the receiving-side terminal device to the base station.

In mode-2 mode, the transmission resource for the terminal device on the transmission side does not depend on the base station. This mode is not limited by network coverage, and the terminal device on the transmission side can communicate in this mode regardless of the availability of network coverage. The resource autonomously selected by the user includes an initial resource or a retransmission resource, or includes an initial resource and a retransmission resource.

In mode-2 mode, the terminal device on the transmission side autonomously selects a resource from the resource selection window based on the resource control result to send data. It is assumed that the transmission side terminal device initiates resource selection in slot n, the resource control window can be defined as T slots followed by the slot in which resource selection is initiated, and the resource selection window is the slots corresponding to [n+Q1, n+Q2] after the slot in which resource selection starts. The resource selection window includes many slots. For one slot, the maximum number of subchannels included in the frequency domain resource corresponding to the slot is , and the set of subchannels corresponding to the subchannels included in the frequency domain resource corresponding to the slot is . The set that includes all resources corresponding to each slot in the [n+Q1, n+Q2] resource selection window is defined as , where each resource is a set of consecutive subchannels whose length is , And represents the number of subchannels occupied by PSSCH and PSCCH that correspond to data to be transmitted. In the [n+Q1, n+Q2] resource selection window, the total number of resources corresponding to each slot is equal to .

For example, in FIG. 3 shows a schematic representation of a frequency domain resource corresponding to one slot. In FIG. 3, block 0 - block 8 represent all subchannels corresponding to one slot, in other words, = 8, and the set of subchannels corresponding to the eight subchannels is . The number of subchannels occupied by the PSSCH corresponding to the data to be transmitted is , And is equal to, for example, 2. In this case, the total number of resources corresponding to the slot is 8–2+1=7, and in Fig. 3, the resources are resource 0 - resource 7. A set including seven resources corresponding to the slot represents .

The following is a description of the process in which the transmission-side terminal device performs resource selection in mode-2 mode.

Step 1: In the resource control window, the terminal device on the transmitting side monitors the SCI in the resource pool that is sent by the other terminal device.

Step 2: If the monitored SCI includes a resource that has been reserved by another terminal device, and the reserved resource is located in the [n+Q1, n+Q2] resource selection window, the transmitting side terminal device measures the resource corresponding to the reserved resource to obtain Resource RSRP. For example, as shown in FIG. 4, the left time window represents a resource control window, and the right time window represents a resource selection window; in the resource monitoring window, UE1 represents a resource used by UE 1, UE2 represents a resource used by UE 2, and UE3 represents a resource used by UE 3; in the resource selection window, UE1 represents the reserved resource of UE 1, UE2 represents the reserved resource of UE 2, and UE3 represents the reserved resource of UE 3.

If the RSRP value obtained from the measurement exceeds the specified threshold RSRP, the transmitting side terminal device excludes the resource from the resource selection window; otherwise, the terminal device on the transmission side can select a resource from the resource selection window. In this case, the resource may be referred to as a candidate resource.

is a function between the priority corresponding to the data specified in the received SCI and the priority corresponding to the data to be sent of the terminal device on the transmitting side.

Step 3: If the number of candidate resources in the resource selection window is less than X% of the number of all resources included in the resource selection window, increases by 3 dB, and then step 2 is repeated.

Step 4: The transmitting-side terminal device selects a resource from the candidate resources.

You can find out that in step 3 of the resource selection process in mode-2, if the number of candidate resources in the resource selection window is less than X% of the number of all resources, the specified RSRP threshold value increases by 3 dB where the value of X is specified and set to 20. For example, when 30% of the resources are excluded from the resource selection window, the number of remaining candidate resources is 70% of the number of all resources, where 70% is greater than the specified RSRP threshold of 20 %, and the terminal device on the transmission side can finally select a resource from 70% of all resources. When 90% of resources are excluded from the resource selection window, the number of remaining candidate resources is 10% of the number of all resources, where 10% is less than the specified RSRP threshold of 20%. In this case, the specified threshold value RSRP needs to be increased until the number of remaining candidate resources exceeds 20% of the number of all candidate resources, and the terminal device on the transmission side can finally select a transmission resource from 20% of all resources.

The value of X corresponds to the lower limit share of the resource that is ultimately actually selected by the terminal device on the transmit side. The resource includes an initial transmission resource and/or a retransmission resource, and the total number of resources is . In this case, X=20 is the X value used in LTE-V2X. LTE-V2X only supports blind retransmission, which includes a maximum of two transmissions, that is, one initial transmission and one retransmission, where . When performing resource selection, the transmission-side terminal device first selects one resource, and then selects another resource from the remaining candidate resource. In addition to this, the time interval between two resources in the time domain is a specified time interval and is measured in slots. If the terminal device on the transmission side cannot find from the remaining candidate resource another transmission resource that satisfies the requirement of the given slot , the terminal device on the transmission side only performs initial transmission and does not perform retransmission.

When a small number of resources are selected, X=20 can usually satisfy the requirement. However, in NR-V2X, many retransmissions may occur and a large number of resources need to be selected. In this case, if the X value is set to 20, the specified threshold value RSRP is adjusted only when the number of remaining candidate resources in the resource selection window is less than 20% of the number of all candidate resources included in the resource selection window. Moreover, even if the threshold value RSRP is regulated, the number of available resources is also limited. In other words, the value of X limits the number of resources available. This reduces the efficiency of resource selection.

For example, the maximum number subchannels, which corresponds to each slot in the resource selection window, is 8, the corresponding set of subchannels is , quantity The subchannels occupied by the PSSCH that corresponds to the transmitted data of the terminal device on the transmission side is 2, and the set including all resources in each slot is . If the length of the resource selection window is eight slots, the number of all resources corresponding to each slot is 56. Referring now to FIG. 5. Blocks marked with a slash are excluded resources, and there are a total of 43 excluded resources. There are 13 remaining available resources, which is 23% of all resources, where 23% is greater than 20%. It is assumed that the number resources that need to be selected at a given time are 4, that is, it is necessary to perform one initial transmission and three retransmissions, time interval between two adjacent resources is 2, and the frequency interval between two adjacent resources is 0. Since the 43 excluded resources are randomly distributed among all 56 resources, four resources cannot be selected from the remaining 13 resources, among which the time interval is equal to 2, and the frequency interval equals 0.

In view of this, the technical solutions presented in the embodiments of the present application are provided. In embodiments of the present application, the number of available candidate resources included in the resource pool is greater than or equal to X% of the number of all candidate resources included in the resource pool. The value of X can be set based on various factors, for example, can be set based on the number of resources to be selected, can be set based on the number of resources to be selected and the first time slot, can be set based on the number of resources that must be selected, the first time slot and the first frequency slot, or can be set based on service priority. For example, when the number of resources to be selected is large, X may be set to a large value. Alternatively, when service priority is high, X can be set to a large value. If the value of X is large, a large number of resources are available, and the resource selection requirement can be satisfied to the maximum extent possible, which improves the efficiency of resource selection and reduces the complexity of the resource selection process. In addition to this, as many sufficient resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer. Moreover, in embodiments of the present application, the value of X is not fixed, but can be set based on various requirements so that the resource selection process is more flexible.

The technical solutions presented in the embodiments of this application can be applied in D2D scenarios, such as a D2D NR scenario or a D2D LTE scenario, or can be applied in V2X scenarios, such as a V2X NR scenario or a V2X LTE scenario. For example, technical solutions can be applied to the Internet of Vehicles such as V2X, LTE-V or V2V, or can be applied to areas such as intelligent driving and intelligent connected vehicles. Alternatively, the technical solutions can be applied to other scenarios or other communication systems, for example, can be applied to resource selection over the Uu interface in an LTE system or an NR system. This is not particularly limited.

The following is a description of the network architecture in which embodiments of the present application are applied. FIG. 6 shows a network architecture to which an embodiment of the present application is applied.

FIG. 6 shows a network device and two terminal devices, namely terminal device 1 and terminal device 2. Both terminal devices can be connected to the network device; only terminal device 1 of the two terminal devices can be connected to the network device, and terminal device 2 is not connected to the network device; or neither of the two terminal devices is connected to the network device. Two terminal devices can communicate with each other via a sidelink. FIG. 6 uses an example in which only terminal device 1 is connected to the network device. Of course, the number of terminal devices shown in FIG. 6 is only an example. During actual application, a network device may serve a plurality of terminal devices.

For example, the network device shown in FIG. 6 is a network access device such as a base station. The access network device corresponds to different devices in different systems. For example, a network access device may correspond to an eNB in a system using ^4th generation (4G) mobile communication technology, and correspond to a 5G network access device, such as a gNB, in a 5G system, or a network device in a subsequent evolved communication system .

For example, the terminal device shown in FIG. 6 is a vehicle-mounted terminal device or vehicle. However, the terminal device in the embodiments of the present application is not limited to this.

Below, with reference to the accompanying drawings, is a description of the technical solutions presented in the embodiments of the present application.

An embodiment of the present application provides a first method for selecting resources. FIG. 7 is a flowchart of the method. The following process description uses an example in which the method is applied to the network architecture shown in FIG. 6. In addition, the method can be performed by two communication devices. The two communication devices are, for example, a first communication device and a second communication device. The first communication device or the second communication device may be a network device or a communication device that can support the network device to implement the functions required to perform the method, may be a terminal device or a communication device that can support the terminal device to implement the functions required to perform the method. implementation of the method, or, of course, may be another communication device, for example, a chip system. In addition, the implementation of the first communication device or the second communication device is not limited. For example, two communication devices may be implemented in the same form, for example, implemented as a device. Alternatively, the two communication devices may be implemented in different forms. For example, the first communication device is implemented as a device, and the second communication device is implemented as a chip system. The network device is, for example, a base station.

Next, for ease of description, an example is used in which the method is performed by terminal devices, namely, an example in which the first communication device is a terminal device (for example, called a first terminal device), and the second communication device is also a terminal device (for example, called a second terminal device). terminal device). Here, an example is used in which this embodiment is applied to the network architecture shown in FIG. 6. That is, the first terminal device shown below may implement the functions of the terminal device 1 in the network architecture shown in FIG. 6, and the second terminal device shown below may implement the functions of the terminal device 2 in the network architecture shown in FIG. 6. For example, the first terminal device is a signaling side, and the second terminal device is a signal receiving side.

S71: The first terminal device selects a first resource for the first data from candidate resources included in the resource pool, where the candidate resources include resources whose received reference signal power is less than or equal to the first threshold value.

The first terminal device is configured to transmit data, eg, the first data, and may select a resource for the first data from candidate resources included in the resource pool. Candidate resources herein are available resources within resources included in a resource pool, for example, resources whose RSRP received by the first terminal device in a measurement is less than or equal to the first threshold value. The first threshold value is, for example, , described above, or may be a different threshold value. The resource pool is, for example, the resource selection window described above.

In this embodiment of the present application, the number of candidate resources may be greater than or equal to X% of the number of all resources included in the resource pool. For example, X may be configured by the network device, may be preconfigured in the first terminal device, or may be specified in the protocol.

In this embodiment of the present application, the value X may correspond to various conditions, for example, to correspond to one or more of the following: a first condition, a second condition, a third condition, or a fourth condition. The following examples are used to describe the four conditions.

1. The first condition that the value of X satisfies is the following:

The X value can be set based on the target amount of resources. The target amount of resources may be the total amount of resources that must be selected to transmit the first data. Alternatively, the first data transmission may require a large amount of resources, but the resource pool may be limited. For example, for one resource pool, a maximum of H resources are selected one time, where H is an integer greater than or equal to 0 and less than the total number of resources that are required for the first data. In this case, it may be necessary to perform multiple selections to satisfy the requirement to transmit the first data. In this case, the target amount of resources in this embodiment of the present application may alternatively be the total amount of resources to be selected once. For example, if the first data requires one initial transmission and a maximum of three retransmissions, the target number of resources for the first data could be 4.

In an additional method, the target amount of resources for the first data may be related to the quality of service (QoS) of the first data, may be related to resource pool configuration information, or may be related to the QoS of the first data and resource pool configuration information. That the target amount of resources is related to the QoS of the first data can also be regarded as: The target amount of resources is related to the QoS of the service corresponding to the first data. The resource pool configuration information is determined, for example, by the network device and may be sent by the network device to the terminal device; or configuration information may be specified in the protocol. The resource pool configuration information may indicate a maximum number of resources that can be selected once from the resource pool, and the resource pool is a resource pool from which a resource for the first data is selected. For example, for one resource pool, the maximum number H of resources is selected once. In this case, the resource pool configuration information may indicate the value H.

For example, a larger target number of resources may indicate a larger value of X. Table 1 provides examples of the correspondence between the target number of resources and the value of X.

Table 1

Target amount of resources X 2 20 3 thirty 4 40 >4 50

For example, in Table 1, when the target resource quantity is 2, the value of X might be 20; when the target resource quantity is 3, the value of X can be 30. Of course, Table 1 is just an example. In the first condition, the target amount of resources and the value of X are not limited to the few matches shown in Table 1, as long as the value of X is set based on the target amount of resources.

A larger target number of resources indicates a larger number of resources to be selected. In this case, the value of X can be increased so that the number of candidate resources is large. A larger number of candidate resources indicates a larger selection range and therefore indicates a higher probability that the resource can be selected. In this way, the resource selection requirement can be fulfilled to the maximum extent possible, thereby increasing the efficiency of resource selection and reducing the complexity of the resource selection process. In addition to this, as many resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer.

2. The second condition to which the value of X corresponds:

The value of X can be set based on the target amount of resources and the first time interval. The first time slot may be a time slot satisfied by two adjacent resources in the resources to be selected. For example, the first time interval could be , described above, or the time interval set in this embodiment of the present application.

For example, when the target amount of resources is fixed, a smaller first time interval may indicate a larger value of X. Table 2 provides examples of the correspondence between the target amount of resources, the first time interval, and the value of X.

table 2

Target amount of resources First time interval X 2 ≤ thirty 2 > 20 3 ≤ 40 3 > thirty 4 ≤ 50 4 > 40 >4 ≤ 60 >4 > 50

Table 2 has a range of values, for example {3, 4, 5}, and is measured, for example, in slots. Certainly, is not limited to this. For example, in Table 2, when the target resource quantity is 2, if the first time interval is less than or equal to , the value of X can be 30; or if the first time interval is greater , the value of X may be 20. It can be learned that when the target amount of resources is fixed, a smaller first time interval indicates a larger value of X. Of course, Table 2 is just an example. In the first condition, the target amount of resources, the first time interval and the value of X are not limited to several matches shown in Table 2, provided that the value of X is set based on the target amount of resources and the first time interval.

When the target number of resources is fixed, a smaller first time interval may indicate a larger number of resources to be selected. In this case, the value of X can be increased so that the number of candidate resources is large. A larger number of candidate resources indicates a larger selection range and therefore indicates a higher probability that the resource can be selected. In this way, the resource selection requirement can be fulfilled to the maximum extent possible, thereby increasing the efficiency of resource selection and reducing the complexity of the resource selection process. In addition to this, as many sufficient resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer.

3. The third condition that the value of X satisfies:

The value of X can be set based on the target amount of resources, the first time slot and the first frequency slot. The first frequency slot may be a frequency slot that satisfies the requirements of two adjacent resources in the resources to be selected.

For example, when both the target amount of resources and the first time interval are fixed, a smaller first frequency interval may indicate a larger value of X. Table 3 provides examples of the correspondence between the target amount of resources, the first time interval, the first frequency interval, and the value of X.

Table 3

Target amount of resources First time interval First frequency interval X 2 ≤ ≤ 35 > thirty 2 > ≤ 25 > 20 3 ≤ ≤ 45 > 40 3 > ≤ 35 > thirty 4 ≤ ≤ 55 > 50 4 > ≤ 45 > 40 >4 ≤ ≤ 65 > 60 >4 > ≤ 55 > 50

Table 3 has a range of values, for example {3, 4, 5}, and is measured, for example, in slots. has a range of values, for example, {3, 4, 5}, and is measured, for example, in subchannels or resource blocks (RBs). Undoubtedly, And are not limited to this. For example, in Table 3, when the target resource quantity is 2 and the first time interval is less than or equal to , if the first frequency interval is less than or equal to , the value of X can be 35; or if the first time interval is greater , the value of X may be 30. It can be learned that when both the target resource amount and the first time interval are fixed, a smaller first frequency interval indicates a larger value of X. Of course, Table 3 is only an example. In the first condition, the target amount of resources, the first time interval, the first frequency interval and the value of X are not limited to several matches shown in Table 3, provided that the value of X is set based on the target amount of resources, the first time interval and the first frequency interval.

When the target number of resources and the first time interval are fixed, a smaller first frequency interval may indicate a larger number of resources to be selected. In this case, the value of X can be increased so that the number of candidate resources is large. A larger number of candidate resources indicates a larger selection range and therefore indicates a higher probability that the resource can be selected. In this way, the resource selection requirement can be fulfilled to the maximum extent possible, thereby increasing the efficiency of resource selection and reducing the complexity of the resource selection process. In addition to this, as many sufficient resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer.

4. The fourth condition to which the value of X corresponds:

The value of X can be set based on service priority. For example, a higher service priority may indicate a larger value of X. Table 4 provides examples of the correspondence between service priority and value of X.

Table 4

Service priority X High 40 Average thirty Short 20

For example, in Table 4, when the service priority is high, the value of X may be 40; when the service priority is low, the value of X may be 20. Of course, Table 4 is just an example. In the first condition, the service priority and the value of X are not limited to the few matches shown in Table 4, as long as the value of X is set based on the service priority.

A higher service priority indicates that the probability of successful resource selection should be ensured to the maximum extent possible. In this case, the value of X can be increased so that the number of candidate resources is large. A larger number of candidate resources indicates a larger selection range and therefore indicates a higher probability that the resource can be selected. In this way, the resource selection requirement can be fulfilled to the maximum extent possible, thereby increasing the efficiency of resource selection and reducing the complexity of the resource selection process. In addition to this, as many resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer.

The value of X may alternatively satisfy a condition other than the above four conditions, in other words, alternatively may be set based on another factor. This is not particularly limited.

In this embodiment of the present application, when it is necessary to select resources, the first terminal device may first select one resource, for example, the first resource. Once selected, the first resource can be used as a reference to perform subsequent resource selections.

S72: The first terminal device selects at least one resource for the first data from a candidate resource different from the first resource in the candidate resources based on the first resource and the first slot.

The first interval may include the above first time interval, include the above first frequency interval, or include the first time interval and the first frequency interval. The first time slot may be a time slot that satisfies the requirements of two adjacent resources in the resources to be selected. For example, the first terminal device selects a first resource and at least one resource. In this case, the first time slot may be a time slot that satisfies the requirements for two adjacent resources in the first resource and for at least one resource. The first frequency slot may be a frequency slot that satisfies the requirements of two adjacent resources in the resources to be selected. For example, the first terminal device selects a first resource and at least one resource. In this case, the first frequency slot may be a frequency slot that satisfies the requirements for two adjacent resources in the first resource and for at least one resource.

In this embodiment of the present application, if the total number of resources among the first resource and the at least one resource is greater than or equal to the target number of resources, the first terminal device may stop the resource selection process and send first data on the selected resources. Alternatively, if the total number of resources among the first resource and at least one resource is less than the target number of resources, and a candidate resource that satisfies the selection condition is in the remaining candidate resource (the selection condition may be considered the first interval) , the first terminal device can continue to make selections. Alternatively, if the total number of resources among the first resource and the at least one resource is less than the target number of resources, but the remaining candidate resource does not have a candidate resource that satisfies the selection condition, the first terminal device may stop the resource selection process. Although the number of selected resources is less than the target number of resources, the first terminal device still sends the first data on the selected resources. Alternatively, the first terminal device may perform a reselection in this case.

For example, if the first terminal device determines that there is no available candidate resource other than the first resource and the third resource, and the total number of resources among the first resource and the third resource is less than the target number of resources, the first terminal device may refuse the initially selected resource (eg, the first resource) and reselect the second resource from the candidate resources. After selecting the second resource, the first terminal device may select from the candidate resources one or more resources for the first data from the candidate resources other than the second resource based on the second resource and the first slot. The selection method herein is similar to the method in which the first terminal device selects a resource for the first data based on the first resource and the first slot. The third resource may include a selected resource different from the first resource in the candidate resources. For example, the third resource may be at least one resource, or may include at least one resource and a resource other than the at least one resource. In addition, after the first terminal device selects a resource for the first data based on the second resource and the first slot, if the number of resources that can be selected is greater than or equal to the target number of resources, the first terminal device may stop the resource selection process and send the first data on selected resources. Alternatively, after the first terminal device selects a resource for the first data based on the second resource and the first slot, if the number of resources that can be selected is less than the target number of resources, the first terminal device may stop the resource selection process. Although the number of selected resources is less than the target number of resources, the first terminal device still sends the first data on the selected resources. Alternatively, the first terminal device may perform reselection. The subsequent process in which the first terminal device reselects the resource and sends the first data is similar and can be inferred.

In this embodiment of the present application, if the number of resources that can be selected by the first terminal device is less than the target resource amount, the first terminal device may reselect so that the number of selected resources can be greater than or equal to the target resource amount, as far as perhaps thereby satisfying the requirement to transmit the first data.

There may be a plurality of selection methods in which the first terminal device selects at least one resource for the first data from candidate resources other than the first resource in the candidate resources based on the first resource and the first slot. The following examples are used for description.

1. First selection method:

In the first selection method, the interval between two adjacent resources in the selected resources must be equal to the first interval. The first selection method is further divided into three cases.

In the first case, the first interval includes only the first time interval and does not include the first frequency interval; or the first interval includes the first time interval and the first frequency interval, but the first frequency interval is 0. This case may mean that the frequencies of two adjacent resources in the resources to be selected are the same. In this case, the first terminal device may move the time domain position of the first resource as a time domain reference position forward and/or backward in the time domain to the first frequency slot, where a candidate resource corresponding to the time domain position obtained by the move may use partially or completely at least one resource. In embodiments of the present application, in the example in which the horizontal axis represents time, forward movement in the time domain may be left movement, and backward movement in the time domain may be right movement.

If the candidate resource corresponding to the position in the temporary domain obtained by moving is the entire at least one resource, this indicates that the selection process of the current resource of the first terminal device is completed. The reason may be as follows: the number of selected resources (namely, the total number of resources from the first resource and at least one resource) is greater than or equal to the target number of resources; or a candidate resource that satisfies the selection condition is not present in the remaining candidate resource, and the number of selected resources is less than the target number of resources. If the candidate resource corresponding to the position in the temporary domain obtained by the move is part of at least one resource, this indicates that the current resource selection process of the first terminal device has not been completed. For example, the first terminal device moves a time domain position of the first resource as a time domain reference position forward in the time domain by a first frequency slot. If the candidate resource is at a position in the temporary domain obtained by movement and is, for example, resource 2, the first terminal device may select resource 2, in other words, resource 2 may be used as one of the at least one resource. If the number of currently selected resources is less than the target resource amount, the first terminal device may further move the time domain position of resource 2 as a time domain reference position forward in the time domain by the first frequency slot. If the candidate resource is at a position in the temporary domain obtained by movement and is, for example, resource 3, the first terminal device may select resource 3, in other words, resource 3 may be used as one of the at least one resource. If the number of currently selected resources is less than the target resource number, the first terminal device may further move the time domain position of resource 3 as a time domain reference position forward in the time domain by the first frequency slot. The remaining processes can be inferred by analogy until the number of selected resources is greater than or equal to the target number of resources, or until a candidate resource is not present at the position in the time domain obtained by the move. The method in which the first terminal device selects a resource by moving the time domain position of the first resource as a time domain reference position back in the time domain by the first frequency interval is similar to the above-described method of selecting resources by moving the time domain position of the first resource forward by the first frequency interval interval.

For example, it is assumed that the first frequency slot is 0. For a procedure for executing the resource selection method used by the first terminal device under the condition of selecting the first time slot, refer to FIG. 8.

S81: The first terminal device selects the starting resource for the first data from candidate resources included in the resource pool. For example, the slot corresponding to the starting resource , is equal .

For example, the first terminal device may randomly select an initial resource , Where equals, for example, 0. Initial resource represents the first resource.

S82: The first terminal device moves forward or backward by the first time interval (for example, ) based for getting , Where – a position in the time domain resulting from a move, for example, a slot resulting from a move.

S83: Candidate resource is in the slot .

indicates the target amount of resources. If , And , S82 is executed repeatedly. Alternatively, if , this indicates that the number of selected resources is greater than or equal to the target number of resources, the selection of a new resource can be stopped, and the final resources are determined from the selected candidate resources.

S84: Candidate resource not in slot .

If K , this indicates that the number of selected resources is greater than or equal to the target number of resources, the selection of a new resource can be stopped, and the final resources are determined from the selected candidate resources. Alternatively, if K , S81 is executed again. K represents the number of selected candidate resources.

In the second case, the first interval includes only the first frequency interval and does not include the first time interval; or the first slot includes the first time slot and the first frequency slot, but the first time slot is 0. This case may mean that the time slot between two adjacent resources in the resources to be selected is 0. In this case, the first terminal device may move the frequency domain position of the first resource as a reference frequency domain position up and/or down in the frequency domain into a first frequency slot, where a candidate resource corresponding to the frequency domain position obtained by the move can be used partially or entirely as at least one resource. Moving up in the frequency domain is considered, for example, moving forward in the high frequency direction, and moving down in the frequency domain is considered, for example, moving down in the low frequency direction.

If the candidate resource corresponding to the position in the frequency domain obtained by moving is the entire at least one resource, this indicates that the selection process of the current resource of the first terminal device is completed. The reason may be as follows: the number of selected resources (namely, the total number of resources from the first resource and at least one resource) is greater than or equal to the target number of resources; or a candidate resource that satisfies the selection condition is not present in the remaining candidate resource, and the number of selected resources is less than the target number of resources. If a candidate resource corresponding to a position in the frequency domain obtained by moving is part of at least one resource, this indicates that the current resource selection process of the first terminal device has not been completed. For example, the first terminal device moves a frequency domain position of the first resource as a reference frequency domain position up in the frequency domain to a first frequency slot. If the candidate resource is at a position in the frequency domain obtained by movement and is, for example, resource 4, the first terminal device may select resource 4, in other words, resource 4 may be used as one of the at least one resource. If the number of currently selected resources is less than the target resource number, the first terminal device may further move the frequency domain position of the resource 4 as a frequency domain reference position up in the frequency domain to the first frequency slot. If the candidate resource is at a position in the frequency domain obtained by movement and is, for example, resource 5, the first terminal device may select resource 5, in other words, resource 5 may be used as one of the at least one resource. If the number of currently selected resources is less than the target resource number, the first terminal device may further move the frequency domain position of the resource 5 as a frequency domain reference position up in the frequency domain to the first frequency slot. The remaining processes can be derived by analogy until the number of selected resources is greater than or equal to the target number of resources, or until a candidate resource is not present in the frequency domain position obtained by relocation. The method in which the first terminal device selects a resource by moving the frequency domain position of the first resource as a reference position in the frequency domain downward in the frequency domain by the first frequency interval is similar to the above-described method of selecting resources by moving the frequency domain position of the first resource upward by the first frequency interval interval.

In the third case, the first slot includes both the first frequency slot and the first time slot, and neither the first time slot nor the first frequency slot is 0. In this case, during resource selection, the first terminal device must consider both the time domain condition , and the condition in the frequency domain. For example, the first terminal device may move the time domain position of the first resource as a time domain reference position forward and/or backward in the time domain by a first frequency slot and move the frequency domain position of the first resource as a frequency domain reference position up and/or or down in the frequency domain to a first frequency slot, wherein a candidate resource corresponding to both the time domain position and the frequency domain position that are obtained by the movement may utilize part or all of the at least one resource.

Moving forward and/or backward by a first frequency interval includes, for example, moving forward by a first frequency interval, moving backward by a first frequency interval, or moving forward and backward by a first frequency interval. Likewise, moving up and/or down a first frequency interval includes, for example, moving up a first frequency interval, moving down a first frequency interval, or moving up and down a first frequency interval.

If the candidate resource corresponding to both the time domain position and the frequency domain position that are obtained by moving is at least one resource, this indicates that the selection process of the current resource of the first terminal device is completed. The reason may be as follows: the number of selected resources (namely, the total number of resources from the first resource and at least one resource) is greater than or equal to the target number of resources; or a candidate resource that satisfies the selection condition is not present in the remaining candidate resource, and the number of selected resources is less than the target number of resources. If a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving is part of at least one resource, it indicates that the current resource selection process of the first terminal device has not been completed. For example, the first terminal device moves the position of the first resource in the frequency domain as a reference position in the frequency domain up in the frequency domain by the first frequency interval and moves the position of the first resource in the time domain as the reference position in the time domain forward in the time domain by the first interval in time domain. If the candidate resource is at both a time domain position and a frequency domain position that are obtained by moving, and is, for example, resource 6, the first terminal device may select resource 6, in other words, resource 6 may be used as one from at least one resource. If the number of currently selected resources is less than the target resource amount, the first terminal device may further move the frequency domain position of resource 6 as a reference frequency domain position up in the frequency domain to the first frequency slot and move the time domain position of resource 6 as a reference position in the time domain forward in the time domain by the first frequency interval. If the candidate resource is at both a time domain position and a frequency domain position that are obtained by moving, and is, for example, resource 7, the first terminal device may select resource 7, in other words, resource 7 may be used as one from at least one resource. If the number of currently selected resources is less than the target resource amount, the first terminal device may further move the frequency domain position of the resource 7 as a reference frequency domain position up in the frequency domain to the first frequency slot and move the time domain position of the resource 7 as a reference position in the time domain forward in the time domain by the first frequency interval. The remaining processes can be inferred by analogy until the number of selected resources is greater than or equal to the target number of resources, or until a candidate resource is absent from both the time domain position and the frequency domain position , which are obtained by moving. A method in which a first terminal device selects a resource by moving a position of a first resource in a frequency domain as a reference position in a frequency domain downward in a frequency domain by a first frequency interval and moving a position of a first resource in a time domain as a reference position in a time domain forward in a time domain to the first frequency slot, selects a resource by moving the frequency domain position of the first resource as a frequency domain reference position up in the frequency domain by the first frequency slot and moving the time domain position of the first resource as a time domain reference position back in the time domain by a first frequency slot or selects a resource by moving the frequency domain position of the first resource as a frequency domain reference position down in the frequency domain to the first frequency slot and moving the time domain position of the first resource as a time domain reference position back in the time domain to the first the time interval is similar to the resource selection method described above by moving the frequency domain position of the first resource upward by the first frequency interval and moving the time domain position of the first resource forward by the first frequency interval.

Next, the first case described above (that is, the first interval includes only the first time interval and does not include the first frequency interval; or the first interval includes the first time interval and the first frequency interval, but the first frequency interval is 0) as example to describe several cases that arise in the first selection method when the target amount of resources changes. indicates the target amount of resources.

When , the first terminal device can select the initial resource , namely the first resource, and the slot corresponding to the starting resource , is equal .

Then, based on the first time interval , the first terminal device moves the time slot forward on to get a slot and moves back to to get a slot . Like slot , so and slot represent the positions in the time domain resulting from the movement.

As shown in FIG. 9A, if the candidate resource is in the slot , and candidate resource is in the slot , the first terminal device can determine the final resources from , And . In this case, the number of selected resources is greater than the target number of resources. For example, the first terminal device may randomly select two adjacent resources out of three resources as resources to send the first data. For example, the first terminal device selects And .

Alternatively, the number of selected resources may be equal to the target number of resources. For example, the first terminal device may move the time slot forward on to get a slot without moving back to . Alternatively, the first terminal device may move back to to get a slot without moving forward. Alternatively, the first terminal device moves the time slot forward on to get a slot and moves back to to get a slot , but it is possible that the candidate resource will not be in the slot or in a slot . In all these cases, the number of selected resources may be equal to the target number of resources.

As shown in FIG. 9B, if the candidate resource is not in the slot , and the candidate resource is not in the slot , the first terminal device may refuse the selected resource and reselect a resource from the resource pool. For example, the first terminal device reselects the resource .

After selecting resources the first terminal device may continue to select a resource for the first data based on the first time slot . For example, for a resource , selected for the second time, slot , in which the resource is located , moves forward by to get a slot and moves back to to get a slot . For example, if a candidate resource is in the slot , and candidate resource is in the slot , the first terminal device can determine the final resources from , And . For example, the first terminal device selects And .

When , the first terminal device can select the initial resource , namely the first resource. Slot corresponding to the starting resource , is equal .

Then, based on the first time interval , the first terminal device moves the time slot forward on to get a slot and moves back to to get a slot . Like slot , so and slot represent the positions in the time domain resulting from the movement.

As shown in FIG. 10A, if the candidate resource is in the slot , and candidate resource is in the slot , the first terminal device can move forward on to get a slot and move back to to get a slot .

If the candidate resource is in the slot , and candidate resource is in the slot , the first terminal device can determine the final resources from , , , And . In this case, the number of selected resources is greater than the target number of resources. For example, the first terminal device may randomly select two adjacent resources out of five resources as resources to send the first data. For example, the first terminal device selects , And . Alternatively, the number of selected resources may be equal to the target number of resources. In this case, the details are not described.

As shown in FIG. 10B, if the candidate resource is not in the slot , and the candidate resource is not in the slot , the first terminal device may reselect the initial resource. In this case, the first terminal device may refuse the selected resource and reselect a resource from the resource pool. For example, the first terminal device reselects the resource .

After selecting resources the first terminal device may continue to select a resource for the first data based on the first time slot . For example, for a resource , selected for the second time, slot , in which the resource is located , moves forward by to get a slot and moves back to to get a slot . For example, if a candidate resource is in the slot , and candidate resource is in the slot , the first terminal device can move the slot forward on to get a slot and move the slot back to to get a slot . For example, if a candidate resource is in the slot , and the candidate resource is not in the slot , the first terminal device can determine the final resources from , , And . For example, the first terminal device selects , And .

When , the first terminal device can select the initial resource , namely the first resource. Slot corresponding to the starting resource , is equal . Based on the first time interval the first terminal device moves the time slot forward on to get a slot and moves back to to get a slot . Like slot , so and slot represent the positions in the time domain resulting from the movement.

As shown in FIG. 11A, if the candidate resource is in the slot , and candidate resource is in the slot , the first terminal device can move forward on to get a slot and move back to to get a slot .

If the candidate resource is in the slot , and candidate resource is in the slot , the first terminal device can move forward on to get a slot and move back to to get a slot . If the candidate resource is in the slot , and candidate resource is in the slot , the first terminal device can determine the final resources from, , , , And . . In this case, the number of selected resources is greater than the target number of resources. For example, the first terminal device may randomly select four neighboring resources out of seven resources as resources to send the first data. For example, the first terminal device selects , , And . Alternatively, the number of selected resources may be equal to the target number of resources. In this case, the details are not described.

As shown in Fig. 11B, if the candidate resource not in slot , and candidate resource not in slot , the first terminal device may reselect the initial resource. In this case, the first terminal device may refuse the selected resource and reselect the resource from the resource pool. For example, the first terminal device reselects the resource .

After selecting resources the first terminal device may continue to select a resource for the first data based on the first time slot . For example, for a resource , selected for the second time, slot , in which the resource is located , moves forward by to get a slot and moves back to to get a slot . For example, if a candidate resource is in the slot , and candidate resource is in the slot , the first terminal device can move the slot forward on to get a slot and move the slot back to to get a slot . For example, if a candidate resource is not in the slot , and candidate resource is in the slot , the first terminal device can move the slot back to to get a slot . For example, if a candidate resource is in the slot , the first terminal device can determine the final resources from , , , And . For example, the first terminal device determines , , And .

The above are some examples of the first case in the first selection method. A second selection method is possible, in which the first terminal device selects at least one resource for the first data from candidate resources other than the first resource in the candidate resources based on the first resource and the first slot. The second selection method is described below.

2. Second selection method:

In the second selection method, the interval requirement between selected resources is low. For example, the time interval between adjacent resources does not need to be strictly the first time interval, and only needs to be greater than or equal to the first time interval. Alternatively, the frequency interval between adjacent resources need not be strictly the first frequency interval, and only need to be greater than or equal to the first frequency interval. Thus, the selection conditions become more relaxed, which simplifies the selection of resources and increases the likelihood of successful selection of resources. In addition to this, the second selection method is also divided into three cases.

In the first case, the first interval includes only the first time interval and does not include the first frequency interval; or the first interval includes the first time interval and the first frequency interval, but the first frequency interval is 0. This case may mean that the frequencies of two adjacent resources in the resources to be selected are the same. In this case, the first terminal device may move the time domain position of the first resource as a time domain reference position forward and/or backward in the time domain by the first frequency slot and may select a resource from the first range corresponding to the time domain position obtained by moving wherein the selected resource is part or all of at least one resource. The first range does not include a time domain position between the reference time domain position and the time domain position obtained by moving.

If the candidate resource corresponding to the position in the temporary domain obtained by moving is the entire at least one resource, this indicates that the selection process of the current resource of the first terminal device is completed. The reason may be as follows: the number of selected resources (namely, the total number of resources from the first resource and at least one resource) is greater than or equal to the target number of resources; or a candidate resource that satisfies the selection condition is not present in the remaining candidate resource, and the number of selected resources is less than the target number of resources. If the candidate resource corresponding to the position in the temporary domain obtained by the move is part of at least one resource, this indicates that the current resource selection process of the first terminal device has not been completed. For example, the first terminal device moves a time domain position of a first resource as a time domain reference position forward in the time domain by a first frequency interval, and may select a resource from a first range corresponding to the time domain position obtained by the movement. the position in the time domain obtained by movement may include one or more candidate resources, and the first terminal device has a larger selection range. For example, if the first terminal device selects resource 8 from the first range corresponding to the position in the time domain obtained by movement, the first terminal device may select resource 8, in other words, resource 8 may be used as one of at least one resource. If the number of currently selected resources is less than the target resource amount, the first terminal device may further move the time domain position of the resource 8 as a time domain reference position forward in the time domain to the first frequency slot and select a resource from the first range corresponding position in the time domain obtained by moving. For example, the first terminal device selects the resource 9 from the first range corresponding to the position in the time domain obtained by the movement, in other words, the resource 9 can be used as one of at least one resource. If the number of currently selected resources is less than the target number of resources, the first terminal device may further move the time domain position of the resource 9 as a time domain reference position forward in the time domain to the first frequency slot. The remaining processes can be inferred by analogy until the number of selected resources is greater than or equal to the target number of resources, or until a candidate resource is not present at the position in the time domain obtained by the move. The method in which the first terminal device selects a resource by moving the time domain position of the first resource as a time domain reference position back in the time domain by the first frequency interval is similar to the above-described method of selecting resources by moving the time domain position of the first resource forward by the first frequency interval interval.

It is assumed that the first frequency slot is 0. For the procedure for the resource selection method used by the first terminal device under the condition of selecting the first time slot, refer to FIG. 12.

The first terminal device selects the initial resource for the first data from candidate resources included in the resource pool. For example, the slot corresponding to the starting resource , is equal .

For example, the first terminal device may randomly select an initial resource , Where equals, for example, 0. Initial resource represents the first resource.

The first terminal device moves forward or backward by the first time interval (for example, ) based for getting , Where – a position in the time domain resulting from a move, for example, a slot resulting from a move.

The first terminal device may determine the first range. In this case, the first range does not include candidate resources between And .

If the first range does not include candidate resources, the first step is re-executed, that is, the initial resource is selected for the first data from the candidate resources included in the resource pool, where, for example, i is 1. This is equivalent to reselecting the resource.

Alternatively, if the first range includes a candidate resource, the first terminal device may select the next resource from the first range, where the slot corresponding to the resource , is equal .

If , And , the first stage is repeated. If , this indicates that the number of selected resources is greater than or equal to the target number of resources, the selection of a new resource can be stopped, and the final resources are determined from the selected candidate resources.

In the second case, the first interval includes only the first frequency interval and does not include the first time interval; or the first slot includes the first time slot and the first frequency slot, but the first time slot is 0. This case may mean that the time slot between two adjacent resources in the resources to be selected is 0. In this case, the first terminal device may move a frequency domain position of the first resource as a reference frequency domain position up and/or down in the frequency domain by a first frequency interval and may select a resource from a second range corresponding to the frequency domain position obtained by moving where the selected resource is partially or completely by at least one resource. The second range does not include a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving. Moving up in the frequency domain is considered, for example, moving forward in the high frequency direction, and moving down in the frequency domain is considered, for example, moving down in the low frequency direction.

If the candidate resource corresponding to the position in the frequency domain obtained by moving is the entire at least one resource, this indicates that the selection process of the current resource of the first terminal device is completed. The reason may be as follows: the number of selected resources (namely, the total number of resources from the first resource and at least one resource) is greater than or equal to the target number of resources; or a candidate resource that satisfies the selection condition is not present in the remaining candidate resource, and the number of selected resources is less than the target number of resources. If a candidate resource corresponding to a position in the frequency domain obtained by moving is part of at least one resource, this indicates that the current resource selection process of the first terminal device has not been completed. For example, the first terminal device moves a frequency domain position of the first resource as a reference frequency domain position up in the frequency domain by a first frequency interval, and may select a resource from a second range corresponding to the frequency domain position obtained by the movement. The second range corresponding to the position in the frequency domain obtained by the movement may include one or more candidate resources, and the first terminal device has a larger selection range. For example, if the first terminal device selects resource 10 from a second range corresponding to a position in the frequency domain obtained by movement, the first terminal device may select resource 10, in other words, resource 10 may be used as one of at least one resource. If the number of currently selected resources is less than the target resource number, the first terminal device may further move the frequency domain position of the resource 10 as a reference frequency domain position up in the frequency domain to the first frequency slot and select a resource from the second range corresponding position in the frequency domain obtained by moving. For example, the first terminal device selects a resource 11 from a second range corresponding to a position in the frequency domain obtained by moving, in other words, the resource 11 can be used as one of at least one resource. If the number of currently selected resources is less than the target resource number, the first terminal device may further move the frequency domain position of the resource 11 as a frequency domain reference position up in the frequency domain to the first frequency slot. The remaining processes can be derived by analogy until the number of selected resources is greater than or equal to the target number of resources, or until a candidate resource is not present in the frequency domain position obtained by relocation. The method in which the first terminal device selects a resource by moving the frequency domain position of the first resource as a reference position in the frequency domain downward in the frequency domain by the first frequency interval is similar to the above-described method of selecting resources by moving the frequency domain position of the first resource upward by the first frequency interval interval.

In the third case, the first slot includes both the first frequency slot and the first time slot, and neither the first time slot nor the first frequency slot is 0. In this case, during resource selection, the first terminal device must consider both the time domain condition , and the condition in the frequency domain. For example, the first terminal device may move the time domain position of the first resource as a time domain reference position forward and/or backward in the time domain by a first frequency slot, move the frequency domain position of the first resource as a frequency domain reference position up, and/or or down in the frequency domain by a first frequency interval, and select a resource from a third range corresponding to both a position in the time domain and a position in the frequency domain that are obtained by moving, where the selected resource represents part or all of at least one resource. The third range includes neither a time domain position between the time domain reference position and the time domain position obtained by movement, nor a frequency domain position between the frequency domain reference position and the frequency domain position obtained by movement.

Moving forward and/or backward by a first frequency interval includes, for example, moving forward by a first frequency interval, moving backward by a first frequency interval, or moving forward and backward by a first frequency interval. Likewise, moving up and/or down a first frequency interval includes, for example, moving up a first frequency interval, moving down a first frequency interval, or moving up and down a first frequency interval.

If the candidate resource corresponding to both the time domain position and the frequency domain position that are obtained by moving is at least one resource, this indicates that the selection process of the current resource of the first terminal device is completed. The reason may be as follows: the number of selected resources (namely, the total number of resources from the first resource and at least one resource) is greater than or equal to the target number of resources; or a candidate resource that satisfies the selection condition is not present in the remaining candidate resource, and the number of selected resources is less than the target number of resources. If a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving is part of at least one resource, it indicates that the current resource selection process of the first terminal device has not been completed. For example, the first terminal device moves the position of the first resource in the frequency domain as a reference position in the frequency domain up in the frequency domain by a first frequency slot, moves the position of the first resource in the time domain as a reference position in the time domain forward in the time domain by the first slot in time domain and selects a resource from a candidate resource included in the third band corresponding to both the time domain position and the frequency domain position that are obtained by moving. For example, the first terminal device selects resource 12, in other words, resource 12 may be used as one of at least one resource. If the number of currently selected resources is less than the target resource amount, the first terminal device may further move the frequency domain position of the resource 12 as a reference frequency domain position upward in the frequency domain by the first frequency slot, move the time domain position of the resource 12 as a reference position in the time domain forward in the time domain by the first frequency slot, and select a resource from a candidate resource included in the third band (the third band in this case may be different from the previous third band) corresponding to both the time domain position and and positions in the frequency domain, which are obtained by moving. For example, if the candidate resource is resource 13, the first terminal device may select resource 13, in other words, resource 13 may be used as one of the at least one resource. If the number of currently selected resources is less than the target resource amount, the first terminal device may further move the frequency domain position of the resource 13 as a reference frequency domain position up in the frequency domain by the first frequency slot and move the time domain position of the resource 13 as a reference position in the time domain, forward in the time domain by the first frequency interval to continue resource selection. The remaining processes can be inferred by analogy until the number of selected resources is greater than or equal to the target number of resources, or until a candidate resource is not present in the third range corresponding to both the time domain position and the position in the frequency domain, which are obtained by moving. A method in which a first terminal device selects a resource by moving a position of a first resource in a frequency domain as a reference position in a frequency domain downward in a frequency domain by a first frequency interval and moving a position of a first resource in a time domain as a reference position in a time domain forward in a time domain to the first frequency slot, selects a resource by moving the frequency domain position of the first resource as a frequency domain reference position up in the frequency domain by the first frequency slot and moving the time domain position of the first resource as a time domain reference position back in the time domain by a first frequency slot or selects a resource by moving the frequency domain position of the first resource as a frequency domain reference position down in the frequency domain to the first frequency slot and moving the time domain position of the first resource as a time domain reference position back in the time domain to the first the time interval is similar to the resource selection method described above by moving the frequency domain position of the first resource upward by the first frequency interval and moving the time domain position of the first resource forward by the first frequency interval.

Next, the first case described above is used (that is, the first interval includes only the first time interval and does not include the first frequency interval; or the first interval includes the first time interval and the first frequency interval, but the first frequency interval is 0), and , as an example, =3. indicates the target amount of resources.

Let us now turn to Fig. 13. The first terminal device can select the initial resource , namely, the first resource from the resource pool where the slot corresponding to the initial resource . Based on the first time interval the first terminal device moves the time slot forward on to get the time interval and moves back to to get a slot . Like slot , so and slot represent the positions in the time domain resulting from the movement. The first terminal device may determine the first range. In this case, the first range does not include any candidate resource between the slot and slot , nor the candidate resource between the slot and slot .

If the first range in this case includes a candidate resource, the first terminal device may select the next resource from the first range, where the slot corresponding to the resource , is equal . Based on the first time interval the first terminal device moves the time slot forward on to get a slot and moves back to to get a slot . Like slot , so and slot represent the positions in the time domain resulting from the movement. The first terminal device may determine the first range. In this case, the first range does not include any candidate resource between the slot and slot , nor the candidate resource between the slot and slot .

If the first range in this case includes a candidate resource, the first terminal device may select the next resource from the first range. Thus, the first terminal device selected three resources, namely, , And . Alternatively, after selecting three resources, the first terminal device may further continue making the selection. For example, based on the first time interval the first terminal device can move the slot , in which the resource is located , forward to to get a slot and move back to to get a slot . Like slot , so and slot represent the positions in the time domain resulting from the movement. The first terminal device may determine the first range. In this case, the first range does not include any candidate resource between the slot and slot , nor the candidate resource between the slot and slot . In this case, the first terminal device may continue to select a resource from the first range. Thus, the number of selected resources may be greater than the target number of resources, and then the first terminal device selects resources from the selected resources.

The above examples of the first selection method and the second selection method are intended only to facilitate understanding of the technical solution provided in this embodiment of the present application, but are not intended to limit the solution provided in this embodiment of the present application. For example, the value may be larger or smaller, and while moving in the time domain, only forward movement may be performed instead of backward movement. This is not limited to this embodiment of the present application.

S73: The first terminal device sends first data to the second terminal device on the selected resources, and the second terminal device receives the first data from the first terminal device on the selected resources.

After selecting resources, the first terminal device may send first data to the second terminal device on the selected resources. The amount of resources used by the first terminal device to send the first data may be equal to or less than the target amount of resources. S73 is an optional step.

In this embodiment of the present application, the number of available candidate resources included in the resource pool is greater than or equal to X% of the number of all candidate resources included in the resource pool. The value of X can be set based on various factors, for example, can be set based on the number of resources to be selected, can be set based on the number of resources to be selected and the first time slot, can be set based on the number of resources that must be selected, the first time slot and the first frequency slot, or can be set based on service priority. For example, when the number of resources to be selected is large, X may be set to a large value. Alternatively, when service priority is high, X can be set to a large value. If the value of X is large, a large number of resources are available, and the resource selection requirement can be satisfied to the maximum extent possible, which improves the efficiency of resource selection and reduces the complexity of the resource selection process. In addition to this, as many sufficient resources as possible are selected to avoid that some transfer processes cannot be completed due to lack of resources, thereby increasing the probability of successful transfer. Moreover, in this embodiment of the present application, the value of X is not fixed, but can be set based on various requirements, so the resource selection process is more flexible.

Moreover, in the resource selection process, if the number of selected resources is less than the target number of resources and there are no available candidate resources that satisfy the selection condition, reselection may be performed. With this iterative selection method, the maximum possible number of resources can be selected, thereby increasing the probability of successful resource selection.

This embodiment of the present application further improves the overall resource allocation procedure and mode-2 design of NR-V2X.

To solve the same technical problem, an embodiment of the present application provides a second method for selecting resources. FIG. 14 is a flowchart of the method. The following process description uses an example in which the method is applied to the network architecture shown in FIG. 6. In addition, the method can be performed by two communication devices. The two communication devices are, for example, a first communication device and a second communication device. The first communication device or the second communication device may be a network device or a communication device that can support the network device to implement the functions required to perform the method, may be a terminal device or a communication device that can support the terminal device to implement the functions required to perform the method. implementation of the method, or, of course, may be another communication device, for example, a chip system. In addition, the implementation of the first communication device or the second communication device is not limited. For example, two communication devices may be implemented in the same form, for example, implemented as a device. Alternatively, the two communication devices may be implemented in different forms. For example, the first communication device is implemented as a device, and the second communication device is implemented as a chip system. The network device is, for example, a base station.

For ease of description, an example is used below in which the method is performed by terminal devices, namely, an example in which the first communication device is a terminal device (for example, called a first terminal device) and the second communication device is also a terminal device (for example, called a second terminal device ). Here, an example is used in which this embodiment is applied to the network architecture shown in FIG. 6. That is, the first terminal device shown below may implement the functions of the terminal device 1 in the network architecture shown in FIG. 6, and the second terminal device shown below may implement the functions of the terminal device 2 in the network architecture shown in FIG. 6. For example, the first terminal device is a signaling side, and the second terminal device is a signal receiving side.

S141: The first terminal device selects a first resource for the first data from a first candidate resource included in the resource pool, where the candidate resource includes a resource whose received reference signal power is less than or equal to the first threshold value.

The first terminal device is configured to transmit data, eg, first data, and may select a resource for the first data from a candidate resource included in the first resource pool. The first candidate resource herein is an available resource among the resources included in the first resource pool, for example, is a resource whose RSRP received by the first terminal device during the measurement is less than or equal to the first threshold value. The first candidate resource may include one or more candidate resources. The first threshold value, e.g. , described above or may be another threshold value. The first resource pool is, for example, the resource selection window described above.

In this embodiment of the present application, the current value, for example, 20, may still be used for X. Alternatively, the value of X may be the same as in the embodiment shown in FIG. 7. For details, please refer to the corresponding description of S71 in the embodiment shown in FIG. 7.

In this embodiment of the present application, when it is necessary to select resources, the first terminal device may first select one resource, for example, the first resource. Once selected, the first resource can be used as a reference to perform subsequent resource selections.

S142: The first terminal device determines, based on the first resource and the first slot, that there is no candidate resource other than the first resource and the third resource in the first candidate resource (that is, determines that there is no available candidate resource other than the first resource and the third resource in the first candidate resource), and that the total number of resources from the first resource and the third resource is less than the target number of resources.

The third resource includes a selected resource different from the first resource in the first candidate resource. The requirements for the first interval must be satisfied during resource selection. The first slot may include a first time slot, include a first frequency slot, or include a first time slot and a first frequency slot. The third resource may include one or more resources. The first time slot may be a time slot that satisfies the requirements of two adjacent resources in the resources to be selected. For example, the first time interval could be specified above or may be a time interval set in this embodiment of the present application. The first frequency slot may be a frequency slot that satisfies the requirements of two adjacent resources in the resources to be selected. For example, if both the first resource and the third resource are selected resources, the first time slot may be a time slot that satisfies the requirements for two adjacent resources in the first resource and the third resource, and the first frequency slot may be a frequency slot that satisfies the requirements for two adjacent resources in the first resource and the third resource. In other words, the number of resources selected by the first terminal device is less than the target number of resources, but no candidate resource that satisfies the selection condition is available for selection.

Optionally, the target amount of resources for the first data may be associated with the QoS of the first data, may be associated with resource pool configuration information (e.g., associated with the configuration information of the first resource pool), or may be associated with the QoS of the first data and resource pool configuration information (for example, configuration information for the first resource pool). That the target amount of resources is related to the QoS of the first data can also be considered as follows: the target amount of resources is related to the QoS of the service corresponding to the first data. For information about resource pool configuration, etc. Refer to the description S71 of the embodiment shown in FIG. 7.

S143: The first terminal device may replace the first resource pool with the second resource pool.

In this embodiment of the present application, if the total number of resources among the first resource and the at least one resource is greater than or equal to the target number of resources, the first terminal device may stop the resource selection process and send first data on the selected resources. Alternatively, if the total number of resources among the first resource and at least one resource is less than the target number of resources, and a candidate resource that satisfies the selection condition is in the remaining candidate resource (the selection condition may be considered the first interval) , the first terminal device can continue to make selections. Alternatively, if the total number of resources among the first resource and the at least one resource is less than the target number of resources, but the remaining candidate resource does not have a candidate resource that satisfies the selection condition, the first terminal device may stop the resource selection process. Although the number of selected resources is less than the target number of resources, the first terminal device still sends the first data on the selected resources. Alternatively, in this case, the first terminal device may reselect. If the first terminal device performs reselection, the first terminal device may replace the first resource pool with the second resource pool.

The first terminal device may replace the first resource pool with the second resource pool in various ways.

For example, the first terminal device may move the end position in the time domain of the first resource pool back in the time domain by a first time period to obtain a second resource pool. For example, the starting position in the time domain of the first resource pool is T1, and the ending position in the time domain is T2. The first terminal device may move an ending time domain position of the first resource pool back from T2 to a first time period in T3 to obtain a second resource pool, where the starting time domain position of the second resource pool is T1, and the ending time domain position of the second resource pool is T3. In other words, the first resource pool is thereby expanded such that the expanded first resource pool (namely, the second resource pool) includes more candidate resources.

This method is equivalent to shifting the position in the time domain of the resource pool to increase the candidate resources to increase the minimum range that corresponds to X and is intended for the final and actual selection of resources. Thus, this method can also be considered as a way to implicitly configure the value of X.

As another example, in another method, the first terminal device may move the starting position of a temporary area of the first resource pool back in the temporary domain to a second time period and move the ending position of the temporary area of the first resource pool back in the temporary domain to a third time period to obtain a second pool resources. For example, the starting position in the time domain of the first resource pool is T1, and the ending position in the time domain of the first resource pool is T2. The first terminal device may move a starting time domain position of the first resource pool back from T1 to a second time period at T4 and may move an ending time domain position of the first resource pool back from T2 to a third time period at T5 to obtain a second resource pool, where the starting position in the time domain of the second resource pool is T4, and the ending position in the time domain of the second resource pool is T5. Thus, the first resource pool and the second resource pool may or may not overlap, and the length of the temporary domain of the first resource pool may or may not be equal to the length of the temporary domain of the second resource pool.

The first duration, the second duration, or the third duration may be configured by the network device, may be preconfigured in the first terminal device, may be specified in a protocol, or may be otherwise set. The first duration, second duration and third duration may or may not be equal; or any two of the first duration, second duration and third duration are equal. This is not particularly limited.

By any of the above methods, a new candidate resource can be introduced, thereby increasing the likelihood of successful resource selection.

S144: The first terminal device may select, based on the second resource in the second resource pool and the first slot, at least one resource from a candidate resource different from the second resource in the second candidate resource included in the second resource pool.

The second candidate resource herein is an available resource in the resources included in the second resource pool, for example, is a resource whose RSRP received by the first terminal device during the measurement is less than or equal to the first threshold value. The second candidate resource may include one or more candidate resources.

After changing the resource pool, the first terminal device may reselect a resource for the first data from the second resource pool.

The second resource and the first resource may be the same resource. This method applies to the case where the first resource is in the second resource pool. That is, if the first resource is in the second resource pool, the first terminal device may not need to reselect the first resource, but continues to select a subsequent resource with reference to the first resource.

Alternatively, the second resource and the first resource may be different resources. For example, the first resource is not in the second resource pool. In this case, the first terminal device may reselect a resource from the second resource pool. Alternatively, even if the first resource is in the second resource pool, the first terminal device may still reselect a resource from the second resource pool.

For example, as shown in Fig. 15, if resources that satisfy the requirements of the first time interval and/or the first frequency interval , cannot be found when the target quantity resources is fixed, and the first time interval and/or first frequency interval are/are fixed, the first terminal device can move the first resource pool from [n+Q1, n+Q2] to [n+Q1, n+Q2+ ], Where – window sliding interval. The first terminal device reselects resources in the second resource pool [n+Q1, n+Q2+ ]. If resources that satisfy the requirements of the first time interval and/or the first frequency interval , still cannot be found in the second resource pool, the first terminal device can continue shifting the second resource pool, for example, to [n+Q1, n+Q2+2 ], where, for example, [n+Q1, n+Q2+2 ] is referred to as the third resource pool. The above process is repeated and sliding does not stop until the upper limit value (e.g., the final position in the time domain) of the resulting resource pool exceeds the resource selection latency requirement, or until no more resources are selected. resources, and the selected resources are used as the final result of resource selection.

In addition, various selection methods are also possible in which the first terminal device selects at least one resource for the first data from a candidate resource other than the second resource in the second candidate resource based on the second resource and the first slot. The following examples are used for description.

1. First selection method:

In the first selection method, the interval between two adjacent resources in the selected resources must be equal to the first interval. The first selection method is further divided into three cases.

In the first case, the first interval includes only the first time interval and does not include the first frequency interval; or the first interval includes the first time interval and the first frequency interval, but the first frequency interval is 0. This case may mean that the frequencies of two adjacent resources in the resources to be selected are the same. In this case, the first terminal device may move the time domain position of the second resource as a reference time domain position forward and/or backward in the time domain to the first frequency slot, where a candidate resource corresponding to the time domain position obtained by moving may use partially or completely at least one resource. For a specific description of this case, refer to the corresponding description of S72 in the embodiment shown in FIG. 7.

For example, it is assumed that the first frequency slot is 0. For the procedure for the resource selection method used by the first terminal device under the condition of selecting the first time slot, refer to FIG. 16.

S161: The first terminal device selects the starting resource for the first data from a candidate resource included in the resource pool. For example, the slot corresponding to the starting resource , is equal .

For example, the first terminal device may randomly select an initial resource , Where equals, for example, 0. Initial resource represents the first resource.

S162: The first terminal device moves forward or backward by the first time interval (for example, ) based for getting , Where – a position in the time domain resulting from a move, for example, a slot resulting from a move.

S163: Candidate resource is in the slot .

indicates the target amount of resources. If , And , S162 is executed repeatedly. Alternatively, if , this indicates that the number of selected resources is greater than or equal to the target number of resources, the selection of a new resource can be stopped, and the final resources are determined from the selected candidate resources.

S164: Candidate resource not in slot .

If K , this indicates that the number of selected resources is greater than or equal to the target number of resources, the selection of a new resource can be stopped, and the final resources are determined from the selected candidate resources. Alternatively, if K , and the delay requirement is satisfied after the end position in the time domain of the first resource pool is moved back, the first resource pool can be replaced by the second resource pool. For example, the end position in the temporary domain of the first resource pool is moved back by to obtain a second pool of resources. After receiving the second resource pool, S161 or S162 may be executed again. K represents the number of selected candidate resources.

In the second case, the first interval includes only the first frequency interval and does not include the first time interval; or the first slot includes the first time slot and the first frequency slot, but the first time slot is 0. This case may mean that the time slot between two adjacent resources in the resources to be selected is 0. In this case, the first terminal device may move a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain into a first frequency slot, where a candidate resource corresponding to the frequency domain position obtained by the move can be used partially or entirely as at least one resource. Moving up in the frequency domain is considered, for example, moving forward in the high frequency direction, and moving down in the frequency domain is considered, for example, moving down in the low frequency direction. For a specific description of this case, refer to the corresponding description of S72 in the embodiment shown in FIG. 7.

In the third case, the first slot includes both the first frequency slot and the first time slot, and neither the first time slot nor the first frequency slot is 0. In this case, during resource selection, the first terminal device must consider both the time domain condition , and the condition in the frequency domain. For example, the first terminal device may move the time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency slot and move the frequency domain position of the second resource as a frequency domain reference position up and/or or down in the frequency domain to a first frequency slot, wherein a candidate resource corresponding to both the time domain position and the frequency domain position that are obtained by the movement may use part or all of the at least one resource.

Moving forward and/or backward by a first frequency interval includes, for example, moving forward by a first frequency interval, moving backward by a first frequency interval, or moving forward and backward by a first frequency interval. Likewise, moving up and/or down a first frequency interval includes, for example, moving up a first frequency interval, moving down a first frequency interval, or moving up and down a first frequency interval.

For a specific description of this case, refer to the corresponding description of S72 in the embodiment shown in FIG. 7.

The following describes the resource selection process using the above first case (that is, the first slot includes only the first time slot and does not include the first frequency slot; or the first slot includes the first time slot and the first frequency slot, but the first frequency slot is 0), and, as an example, = 4. indicates the target amount of resources.

Let us now turn to Fig. 17. The first resource pool is [n+Q1, n+Q2], the first terminal device selects the initial resource from the first resource pool, and the slot corresponding to the starting resource , is equal . Based on the first time interval the first terminal device moves the time slot forward on to get a slot and moves back to to get a slot . Like slot , so and slot are the positions in the time domain resulting from the movement.

If the candidate resource not in slot , candidate resource not in slot , and the delay requirement is still satisfied after the end position in the time domain of the first resource pool is moved back by , the first resource pool can be replaced by the second resource pool [n+Q1, n+Q2+ ]. The first terminal device can reselect the resource from the second resource pool. Alternatively, if also included in the second resource pool, the first terminal device can continue to use as the selected resource. Referring to FIG. 17, an example is used in which the first terminal device reselects , , where slot corresponds .

Based on the first time interval , the first terminal device moves the time slot forward on to get a slot and moves back to to get a slot . Like slot , so and slot are the positions in the time domain resulting from the movement.

If the candidate resource is in the slot , and candidate resource is in the slot , based on the first time interval , the first terminal device moves the slot forward on to get a slot and moves the slot back to to get a slot . Like slot , so and slot are the positions in the time domain resulting from the movement.

For example, if a candidate resource not in slot , but the candidate resource is in the slot , the first terminal device moves back to , based on the first time interval to get a slot . For example, if there is no candidate resource in the slot , the first terminal device can determine , , And as the final selected resources.

The above are some examples of the first case in the first selection method. In addition, a second selection method is possible in which the first terminal device selects at least one resource for the first data from a candidate resource different from the first resource in the candidate resource based on the first resource and the first slot. The second selection method is described below.

2. Second selection method:

In the second selection method, the interval requirement between selected resources is low. For example, the time interval between adjacent resources does not need to be strictly the first time interval, and only needs to be greater than or equal to the first time interval. Alternatively, the frequency interval between adjacent resources need not be strictly the first frequency interval, and only need to be greater than or equal to the first frequency interval. Thus, the selection conditions become more relaxed, which simplifies the selection of resources and increases the likelihood of successful selection of resources. In addition to this, the second selection method is also divided into three cases.

In the first case, the first interval includes only the first time interval and does not include the first frequency interval; or the first interval includes the first time interval and the first frequency interval, but the first frequency interval is 0. This case may mean that the frequencies of two adjacent resources in the resources to be selected are the same. In this case, the first terminal device may move the time domain position of the second resource as a time domain reference position forward and/or backward in the time domain by the first frequency slot. The first terminal device may select a resource from a first range corresponding to a position in the time domain obtained by the movement, where the selected resource is partly or wholly of at least one resource. The first range does not include a time domain position between the reference time domain position and the time domain position obtained by moving. For a specific description of this case, refer to the corresponding description of S72 in the embodiment shown in FIG. 7.

It is assumed that the first frequency slot is 0. For the procedure for the resource selection method used by the first terminal device under the condition of selecting the first time slot, refer to FIG. 18.

The first terminal device selects the initial resource for the first data from a candidate resource included in the resource pool. For example, the slot corresponding to the starting resource , is equal .

For example, the first terminal device may randomly select an initial resource , Where equals, for example, 0. Initial resource represents the first resource.

The first terminal device moves forward or backward by the first time interval (for example, ) based for getting , Where – a position in the time domain resulting from a move, for example, a slot resulting from a move.

The first terminal device may determine the first range. In this case, the first range does not include candidate resources between And .

If the first range does not include candidate resources and the delay requirement is still met after the end position in the time domain of the first resource pool is moved back by , the first resource pool can be replaced by the second resource pool [n+ Q1, n+Q2+ ]. The first step is then re-executed (ie, the first terminal device selects an initial resource for the first data from a candidate resource included in the resource pool).

Alternatively, if the first range includes a candidate resource, the first terminal device may select the next resource from the first range, where the slot corresponding to the resource , is equal .

If , , and the second step is repeated (that is, the first terminal device moves forward or backward by , based on the first time interval to get ). If , this indicates that the number of selected resources is greater than or equal to the target number of resources, the selection of a new resource can be stopped, and the final resources are determined from the selected candidate resources.

In the second case, the first interval includes only the first frequency interval and does not include the first time interval; or the first slot includes the first time slot and the first frequency slot, but the first time slot is 0. This case may mean that the time slot between two adjacent resources in the resources to be selected is 0. In this case, the first terminal device may move the frequency domain position of the second resource as a reference frequency domain position up and/or down in the frequency domain to the first frequency interval. The first terminal device may select a resource from a second range corresponding to a position in the frequency domain obtained by the movement, where the selected resource is partly or wholly of at least one resource. The second range does not include a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving. Moving up in the frequency domain is considered, for example, moving forward in the high frequency direction, and moving down in the frequency domain is considered, for example, moving down in the low frequency direction. For a specific description of this case, refer to the corresponding description of S72 in the embodiment shown in FIG. 7.

In the third case, the first slot includes both the first frequency slot and the first time slot, and neither the first time slot nor the first frequency slot is 0. In this case, during resource selection, the first terminal device must consider both the time domain condition , and the condition in the frequency domain. For example, the first terminal device may move the time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency slot, move the frequency domain position of the second resource as a frequency domain reference position up, and/or or down in the frequency domain by a first frequency interval, and select a resource from a third range corresponding to a position in the time domain and a position in the frequency domain that are obtained by moving, where the selected resource is partially or completely at least one resource. The third range includes neither a time domain position between the time domain reference position and the time domain position obtained by movement, nor a frequency domain position between the frequency domain reference position and the frequency domain position obtained by movement.

Moving forward and/or backward by a first frequency interval includes, for example, moving forward by a first frequency interval, moving backward by a first frequency interval, or moving forward and backward by a first frequency interval. Likewise, moving up and/or down a first frequency interval includes, for example, moving up a first frequency interval, moving down a first frequency interval, or moving up and down a first frequency interval.

For a specific description of this case, refer to the corresponding description of S72 in the embodiment shown in FIG. 7.

Next, the first case described above is used (that is, the first interval includes only the first time interval and does not include the first frequency interval; or the first interval includes the first time interval and the first frequency interval, but the first frequency interval is 0), and , as an example, = 4. indicates the target amount of resources.

As shown in Fig. 19, the first resource pool is [n+Q1, n+Q2], the first terminal device selects the initial resource , namely the first resource from the first resource pool, and the slot corresponding to the starting resource , is equal . Based on the first time interval the first terminal device moves the time slot forward for obtaining a time interval and moves back for obtaining a time interval . Like slot , so and slot are the positions in the time domain resulting from the movement. The first terminal device may determine the first range. In this case, the first range does not include any candidate resource between the slot and slot , nor the candidate resource between the slot and slot . If in this case the first range includes a candidate resource, the first terminal device may select the resource and resource from the first range, where the slot corresponding to the resource is equals , and the slot corresponding to the resource , is equal .

Based on the first time interval the first terminal device moves the time slot forward on to get a slot , and moves back to get a slot . Like slot , so and slot are the positions in the time domain resulting from the movement. The first terminal device may determine the first range. In this case, the first range does not include any candidate resource between the slot and slot , nor the candidate resource between the slot and slot .

For example, if the first range in this case does not include a candidate resource, and the delay requirement is still satisfied after the end position in the time domain of the first resource pool is moved back by , the first resource pool can be replaced by the second resource pool [n+Q1, n+Q2+ ]. The first terminal device reselects the initial resource , namely the first resource, from the second resource pool, where slot corresponds to the initial resource .

Based on the first time interval the first terminal device moves the time slot forward for obtaining a time interval and moves back for obtaining a time interval . Like slot , so and slot are the positions in the time domain resulting from the movement. The first terminal device may determine the first range. In this case, the first range does not include any candidate resource between the slot and slot , nor the candidate resource between the slot and slot . If the first range in this case includes a candidate resource, the first terminal device may select the next resource from the first range, where the slot corresponding to the resource , is equal .

Based on the first time interval the first terminal device moves the time slot forward on to get a slot and moves back to to get a slot . Like slot , so and slot represent the positions in the time domain resulting from the movement. The first terminal device may determine the first range. In this case, the first range does not include any candidate resource between the slot and slot , nor the candidate resource between the slot and slot . If the first range in this case includes a candidate resource, the first terminal device may select the next resource from the first range, where the slot corresponding to the resource , is equal .

Based on the first time interval , the first terminal device moves the time slot forward on to get a slot and moves back to to get a slot . Like slot , so and slot represent the positions in the time domain resulting from the movement. The first terminal device may determine the first range. In this case, the first range does not include any candidate resource between the slot and slot , nor the candidate resource between the slot and slot . If the first range in this case includes a candidate resource, the first terminal device may select the next resource from the first range, where the slot corresponding to the resource , is equal .

In this case, the first terminal device has selected four resources and can use four resources , , And as the final selected resources. Alternatively, the first terminal device may continue to make selections such that the number of selected resources is greater than the target number of resources, and then the first terminal device determines resources from the selected resources.

The above examples of the first selection method and the second selection method are only intended to facilitate understanding of the technical solution provided in this embodiment of the present application, but are not intended to limit the solution provided in this embodiment of the present application. For example, the value may be larger or smaller, during movement in the temporary domain only forward movement may be performed instead of backward movement, and both the starting position of the temporary domain and the ending position of the temporary domain of the first resource pool may be moved when the first resource pool is replaced. This is not limited to this embodiment of the present application.

S145: The first terminal device sends first data to the second terminal device on the selected resources, and the second terminal device receives the first data from the first terminal device on the selected resources.

After selecting resources, the first terminal device may send first data to the second terminal device on the selected resources. The amount of resources used by the first terminal device to send the first data may be equal to or less than the target amount of resources. S145 is an optional step.

In the resource selection process provided in this embodiment of the present application, if the number of selected resources is less than the target number of resources and there are no candidate resources available that satisfy the selection condition, reselection may be performed. For example, a new candidate resource may be introduced by moving the resource pool so that the maximum number of resources can be selected to increase the likelihood of successful resource selection.

This embodiment of the present application further improves the overall resource allocation procedure and mode-2 design of NR-V2X.

Below, with reference to the accompanying drawings, devices configured to implement the above methods presented in the embodiments of the present application are described. Thus, all of the above contents can be used in the following embodiments. Duplicate content is not described again.

FIG. 20 shows a schematic block diagram of a communication device 2000 according to an embodiment of the present application. For example, the communication device 2000 is the first terminal device 2000.

The first terminal device 2000 includes a processing module 2010 and a transceiver module 2020. For example, the first terminal device 2000 may be a terminal device, or may be a chip used in a terminal device, or another combination device, other component, or the like that has the functions of a terminal device. When the first terminal device 2000 is a terminal device, the transceiver module 2020 may be a transceiver, where the transceiver may include an antenna, radio frequency circuitry, or the like; processing module 2010 may be a processor, for example, a baseband processor, where the baseband processor may include one or more CPUs. When the first terminal device 2000 is a component having terminal device functions, the transceiver module 2020 may be an RF device, and the processing module 2010 may be a processor, such as a baseband processor. When the first terminal device 2000 is a chip system, the transceiver module 2020 may be an input/output interface of a chip (eg, a baseband chip), and the processing module 2010 may be a processor of the chip system and may include one or more central processing units. It should be understood that the processing module 2010 in this embodiment of the present application may be implemented by a processor or circuit component coupled to a processor, and the transceiver module 2020 may be implemented by a transceiver or circuit component coupled to a transceiver. Optionally, the first terminal device 2000 may further include a storage module, and the storage module may be, for example, a memory. Alternatively, the first terminal device 2000 may not include a storage module, and the storage module is located outside the first terminal device 2000. Regardless of whether the storage module is located in the first terminal device 2000 or outside the first terminal device 2000, the storage module may be configured to store computer instructions. The processing module 2010 calls computer instructions stored in the storage module to perform operations performed by the first terminal device in the embodiment shown in FIG. 7.

The processing unit 2010 may be configured to perform all operations except the sending and receiving operations that are performed by the first terminal device in the embodiment shown in FIG. 7, for example, S71 and S72, and/or is configured to support another process technology described in this specification. The transceiver module 2020 may be configured to perform all reception operations performed by the first terminal device in the embodiment shown in FIG. 7, for example, S73, and/or configured to support another process of the technology described in this specification.

In addition, the transceiver module 2020 may be one function module, and the function module may perform both a sending operation and a receiving operation. For example, the transceiver module 2020 may be configured to perform all of the sending and receiving operations performed by the first terminal device in the embodiment shown in FIG. 7. For example, when performing a send operation, the transceiver module 2020 may be considered a send module; when performing a receiving operation, the transceiver module 2020 may be considered as a receiving module. Alternatively, the transceiver module 2020 may be two functional modules, the transceiver module may be considered a general term for two functional modules, and the two functional modules are, respectively, a transmission module (e.g., corresponding to a transmitter, an RF unit, or an output interface) and a receiving module (e.g. corresponding to a receiver, RF unit or input interface). The sending module is configured to complete a sending operation, for example, may be configured to complete all sending operations performed by the first terminal device in the embodiment shown in FIG. 7. The receiving module is configured to complete a receiving operation, for example, may be configured to complete all receiving operations performed by the first terminal device in the embodiment shown in FIG. 7.

The processing unit 2010 is configured to select a first resource for the first data from candidate resources included in the resource pool, where the candidate resources include resources whose received reference signal power is less than or equal to the first threshold value.

The processing module 2010 is further configured to select at least one resource for the first data from the candidate resources other than the first resource in the candidate resources based on the first resource and the first slot, where the first slot includes a first time slot that satisfies requirements for two adjacent resources in the selected first resource and the selected at least one resource, and/or includes a first frequency slot that satisfies the requirements for two adjacent resources in the selected first resource and the selected at least one resource.

The number of candidate resources is greater than or equal to X% of the number of all resources included in the resource pool, and the value of X meets the following condition:

the value of X is set based on the target amount of resources;

the value of X is set based on the target amount of resources and the first time interval;

the value of X is set based on the target amount of resources, the first time slot and the first frequency slot; or

the value of X is set based on service priority.

The total number of resources from the first resource and at least one resource is less than or equal to the target number of resources.

In an optional implementation, transceiver module 2020 is configured to send first data to a second terminal device on selected resources. The selected resources include, for example, a first resource and at least one resource.

In an optional implementation, the target amount of resources is related to the QoS of the first data and/or resource pool configuration information.

In an optional implementation, the value of X is set based on the number of resources to be selected includes:

a larger target amount of resources, which indicates a larger X value.

In an optional implementation, the value of X is set based on the target amount of resources and the first time interval includes:

when the target amount of resources is fixed, a smaller first time interval that indicates a larger value of X.

In an optional implementation, the value of X is set based on the target amount of resources, the first time slot and the first frequency slot includes:

when the target amount of resources and the first time interval are fixed, a smaller first frequency interval which indicates a larger value of X.

In an optional implementation, the value of X is set based on service priority includes:

higher service priority, which indicates a larger X value.

In an optional implementation, the processing module 2010 is further configured to:

determining that there is no available candidate resource other than the first resource and the third resource among the candidate resources, and that the total number of resources among the first resource and the third resource is less than the target number of resources, where the third resource includes the selected resource, different from the first resource in the candidate resources;

selecting a second resource from the candidate resources; And

selecting one or more resources for the first data from candidate resources other than the second resource, in the candidate resources based on the second resource and the first interval.

In an optional implementation, transceiver module 2020 is further configured to send first data to a second terminal device on selected resources. The selected resources include, for example, a second resource and one or more resources.

In an optional implementation, processing module 2010 is configured to select at least one resource from a candidate resource other than the first resource in the candidate resources based on the first resource and the first slot as follows:

moving a time domain position of a first resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving, in part or in whole, as at least at least one resource, where the first slot includes a first time slot;

moving a frequency domain position of a first resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by moving, in part or in whole, as at least at least one resource, where the first slot includes a first frequency slot; or

moving the position of the first time domain resource as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving, in part or in whole, as at least one resource, where the first slot includes a first time slot and first frequency interval.

In an optional implementation, processing module 2010 is configured to select at least one resource from a candidate resource other than the first resource in the candidate resources based on the first resource and the first slot as follows:

moving a time domain position of a first resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the first range does not include a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval includes the first time interval;

moving a frequency domain position of a first resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not include a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval includes the first frequency domain interval; or

moving the position of the first time domain resource as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency bin, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by movement, where the selected resource is partly or wholly of at least one resource, the third range not including the position in the time domain between the time domain reference position and the time domain position obtained by moving, or the frequency domain position between the frequency domain reference position and the frequency domain position obtained by moving, and the first interval includes the first time interval and first frequency interval.

FIG. 21 shows a schematic block diagram of a communication device 2100 according to an embodiment of the present application. For example, the communication device 2100 is a first terminal device 2100.

The first terminal device 2100 includes a processing module 2110 and a transceiver module 2120. For example, the first terminal device 2100 may be a terminal device, or may be a chip used in a terminal device, or another combination device, other component, or the like that has the functions of a terminal device. When the first terminal device 2100 is a terminal device, the transceiver module 2120 may be a transceiver, where the transceiver may include an antenna, radio frequency circuitry, or the like; processing module 2110 may be a processor, for example, a baseband processor, where the baseband processor may include one or more processors. When the first terminal device 2100 is a component having terminal device functions, the transceiver module 2120 may be an RF device, and the processing module 2110 may be a processor, such as a baseband processor. When the first terminal device 2100 is a chip system, the transceiver module 2120 may be an input/output interface of a chip (eg, a baseband chip), and the processing module 2110 may be a processor of the chip system and may include one or more central processing units. It should be understood that the processing module 2010 in this embodiment of the present application may be implemented by a processor or circuit component coupled to a processor, and the transceiver module 2120 may be implemented by a transceiver or circuit component coupled to a transceiver. If necessary, the first terminal device 2100 may further include a storage module, and the storage module may be, for example, a memory. Alternatively, the first terminal device 2100 may not include a storage module, and the storage module is located outside the first terminal device 2100. Regardless of whether the storage module is located in the first terminal device 2100 or outside the first terminal device 2100, the storage module may be configured to store computer instructions. The processing module 2110 calls computer instructions stored in the storage module to perform operations performed by the first terminal device in the embodiment shown in FIG. 14.

The processing unit 2110 may be configured to perform all operations except the sending and receiving operations that are performed by the first terminal device in the embodiment shown in FIG. 14, for example, S141, S142, S143, and S144, and/or is configured to support other process technology described in this specification. The transceiver module 2120 may be configured to perform all reception operations performed by the first terminal device in the embodiment shown in FIG. 14, such as S145, and/or configured to support another process of the technology described in this specification.

In addition, the transceiver module 2120 may be one function module, and the function module may perform both a sending operation and a receiving operation. For example, the transceiver module 2120 may be configured to perform all of the sending and receiving operations performed by the first terminal device in the embodiment shown in FIG. 14. For example, when performing a send operation, transceiver module 2120 may be considered a send module; when performing a receive operation, the transceiver module 2120 may be considered a receive module. Alternatively, the transceiver module 2120 may have two functional modules, the transceiver module can be considered as a general term for two functional modules, and the two functional modules are, respectively, a transmission module (for example, corresponding to a transmitter, RF block, or output interface) and a receiving module (eg corresponding to the receiver, RF unit or input interface). The sending module is configured to complete a sending operation, for example, may be configured to complete all sending operations performed by the first terminal device in the embodiment shown in FIG. 14. The receiving module is configured to complete a receiving operation, for example, may be configured to complete all receiving operations performed by the first terminal device in the embodiment shown in FIG. 14.

The processing unit 2110 is configured to select a first resource for the first data from a first candidate resource included in the first resource pool, where the first candidate resource includes a resource whose received reference signal power is less than or equal to the first threshold value.

The processing module 2110 is further configured to determine, based on the first resource and the first slot, that an available candidate resource is not present in a candidate resource other than the first resource and a third resource in the first candidate resource, and that the total number of resources among the first resource and the third resource are less than the target amount of resources, where the third resource includes a selected resource other than the first resource in the candidate resource, and the first slot includes a first time slot that satisfies the requirements of two adjacent resources in the selected first resource, and the selected third resource, and/or includes a first frequency slot that satisfies the requirements of two adjacent resources in the selected first resource and the selected third resource.

The processing module 2110 is further configured to replace the first resource pool with a second resource pool.

The processing module 2110 is further configured to select, based on the second resource in the second resource pool and the first slot, at least one resource from a candidate resource other than the second resource in the second candidate resource included in the second resource pool, where the second the candidate resource includes a resource whose received reference signal power is less than or equal to the first threshold value.

In an optional implementation, transceiver module 2120 is configured to send first data to a second terminal device on selected resources. The selected resources include, for example, a second resource and at least one resource.

In an optional implementation, the target amount of resources is related to the QoS of the first data and/or configuration information of the first resource pool.

In an optional implementation,

the second resource and the first resource are the same resource; or

the processing module 2110 is further configured to select a second resource from a candidate resource included in the second resource pool.

In an optional implementation, processing module 2110 is configured to replace the first resource pool with a second resource pool as follows:

moving a terminal position in the time domain of the first resource pool back in the time domain by a first time period to obtain a second resource pool; or

moving a starting position in the time domain of the first resource pool back in the time domain for a second time period and moving an ending position in the time domain of the first resource pool back in the time domain for a third time period to obtain a second resource pool.

In an optional implementation, processing module 2110 is configured to select, based on the second resource and the first slot, at least one resource from a candidate resource different from a second resource in the second candidate resource included in the second resource pool, as follows:

moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving, in part or in whole, as at least at least one resource, where the first slot includes a first time slot;

moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain into a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by the move, in part or in whole as at least at least one resource, where the first slot includes a first frequency slot; or

moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving, in part or in whole, as at least one resource, where the first slot includes a first time slot and first frequency interval.

In an optional implementation, processing module 2110 is configured to select, based on the second resource and the first slot, at least one resource from a candidate resource different from a second resource in the second candidate resource included in the second resource pool, as follows:

moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the first range does not include a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval includes the first time interval;

moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not include a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval includes the first frequency domain interval; or

moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by movement, where the selected resource is partly or wholly of at least one resource, the third range not including the position in the time domain between the time domain reference position and the time domain position obtained by moving, or the frequency domain position between the frequency domain reference position and the frequency domain position obtained by moving, and the first interval includes the first time interval and first frequency interval.

An embodiment of the present application further provides a communication device, and the communication device may be a terminal device or a circuit. The communication device may be configured to perform actions performed by the first terminal device presented in the above method embodiments.

FIG. 22 is a simplified schematic diagram of the structure of a terminal device in the case where the communication device is a terminal device. For ease of understanding and illustration, FIG. 22 shows an example in which the terminal device is a mobile phone. As shown in FIG. 22, the terminal device includes a processor, a memory, an RF circuit, an antenna, and an input/output device. The processor is generally configured to process a communication protocol and communication data, control a terminal device, execute a software program, process software program data, etc. Memory is primarily used to store software and data. The RF circuit is generally configured to perform conversion between a baseband signal and an RF signal and process the RF signal. The antenna is generally configured to send and receive a radio frequency signal in the form of an electromagnetic wave. An input/output device, such as a touch screen, display, or keyboard, is generally configured to receive data input by a user and output data to the user. It should be noted that some types of terminal devices may not have an I/O device.

When data is to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuitry. The RF circuit performs RF processing on the baseband signal and sends the RF signal as an electromagnetic wave through the antenna. When data is sent to a terminal device, the RF circuit receives the RF signal through an antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of description, only one memory and one processor are shown in FIG. 22. In an actual terminal device product there may be one or more processors and one or more memory devices. Memory may also be referred to as a storage medium, storage device, or the like. The memory may be located independently of the processor or may be integrated with the processor. This is not limited to this embodiment of the present application.

In this embodiment of the present application, an antenna and an RF circuit that have a transceiver function can be considered as a transceiver block of a terminal device (the transceiver block may be one functional block, and the functional block may implement a sending function and a receiving function; or the transceiver block may include two functional blocks: a receiving block that can perform a receiving function, and a sending block that can perform a sending function), and a processor having a processing function can be considered as a processing block of a terminal device. As shown in FIG. 22, the terminal device includes a transceiver unit 2210 and a processing unit 2220. The transceiver unit may also be referred to as a transceiver, a transceiver machine, a transceiver device, or the like. A processing unit may also be called a processor, a processing board, a processing unit, a processing unit, or the like. Optionally, the component for implementing the receive function in transceiver block 2210 may be considered a receive block, and the component for implementing the sending function in transceiver block 2210 can be considered a send block. In other words, the transceiver unit 2210 includes a receiving module and/or a sending module. The transceiver unit may also sometimes be called a transceiver, transceiver machine, transceiver circuit, or the like. The receiving unit may also sometimes be referred to as a receiving machine, receiver, receiving circuit, or the like. The transmission unit may also sometimes be called a transmission machine, a transmitter, a transmission circuit, or the like.

It should be understood that the transceiver unit 2210 is configured to perform a sending operation and a receiving operation on the side of the first terminal device in the above-mentioned method embodiments, and the processing unit 2220 is configured to perform an operation different from the sending and receiving operations of the first terminal device presented in the above-mentioned method embodiments. embodiments of the method.

For example, in one implementation, the transceiver block 2210 is configured to perform all of the sending and receiving operations performed by the first terminal device in the embodiment shown in FIG. 7, for example, S73, and/or the transceiver block 2210 is further configured to perform another process, supporting the technology described in this specification. The processing unit 2220 is configured to perform all operations except the sending and receiving operations that are performed by the first terminal device in the embodiment shown in FIG. 7, for example, S71 and S72, and/or the processing unit 2220 is further configured to perform other process supporting the technology described in this specification.

As another example, in one implementation, transceiver block 2210 is configured to perform all send and receive operations performed by the first terminal device in the embodiment shown in FIG. 14, for example, S145, and/or transceiver block 2210 is further configured to perform another process that supports the technology described in this specification. The processing unit 2220 is configured to perform all operations except the sending and receiving operations that are performed by the first terminal device in the embodiment shown in FIG. 14, for example, S141-S144, and/or the processing unit 2220 is further configured to perform other process supporting the technology described in this specification.

When the communication device is a chip or circuit, the device may include a transceiver unit and a processing unit. The transceiver block may be an input/output circuit and/or a communication interface. The processing unit is an integrated processor, microprocessor, or integrated circuit.

When the communication device in this embodiment is a terminal device, the device shown in FIG. 23 should be referred to. In an example, the device may implement a function similar to that of the processing module 2010 shown in FIG. 20. In another example, the device may implement a function similar to that of the processing module 2110 shown in FIG. 21. In FIG. 23, the device includes a processor 2310, a data sending processor 2320, and a data receiving processor 2330. The processing unit 2010 in the previous embodiment may be the processor 2310 shown in FIG. 23 and may perform a corresponding function. The transceiver module 2020 presented in the previous embodiment may be a data sending processor 2320 and/or a data receiving processor 2330, which are shown in FIG. 23, and may perform a corresponding function. Alternatively, the processing unit 2110 presented in the previous embodiment may be the processor 2310 shown in FIG. 23 and may perform a corresponding function. The transceiver module 2120 presented in the previous embodiment may be a sending data processor 2320 and/or a receiving data processor 2330 in FIG. 23, and may perform a corresponding function. Although FIG. 23 shows a channel encoder and a channel decoder, it will be understood that these modules are only examples and are not limiting to this embodiment.

FIG. 24 shows another variation of this embodiment. The processing device 2400 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem. The communication device in this embodiment may be used as a modulation subsystem. In particular, the modulation subsystem may include a processor 2403 and an interface 2404. The processor 2403 implements the function of the processing module 2010, and the interface 2404 implements the function of the transceiver module 2020. Alternatively, processor 2403 implements the function of processing module 2110, and interface 2404 implements the function of transceiver module 2120. In another embodiment, the modulation subsystem includes memory 2406, a processor 2403, and a program that is stored in memory 2406 and may be executed on the processor. When executing the program, the processor 2403 implements the method on the terminal device side in the above method embodiments. It should be noted that memory 2406 may be non-volatile memory or may be volatile memory. The memory 2406 may be located in the modulation subsystem or may be located in the processing device 2400, provided that the memory 2406 can be connected to the processor 2403.

An embodiment of the present application provides a first communication system. The first communication system may include a first terminal device in the embodiment shown in FIG. 7. The first terminal device is, for example, the first terminal device 2000 shown in FIG. 20.

An embodiment of the present application provides a second communication system. The first communication system may include a first terminal device in the embodiment shown in FIG. 14. The first terminal device is, for example, the first terminal device 2100 shown in FIG. 21.

The first communication system and the second communication system may be the same communication system or may be different communication systems.

An embodiment of the present application further provides a computer-readable storage medium. A computer-readable storage medium stores a computer program. When a computer program is executed by a computer, the computer may implement a procedure related to the first terminal device in the embodiment shown in FIG. 7 and illustrated in the above method embodiments.

An embodiment of the present application further provides a computer-readable storage medium. A computer-readable storage medium stores a computer program. When a computer program is executed by a computer, the computer may implement a procedure related to the first terminal device in the embodiment shown in FIG. 14 and illustrated in the above method embodiments.

An embodiment of the present application further provides a computer program product. The computer program product is configured to store a computer program. When a computer program is executed by a computer, the computer may implement a procedure related to the first terminal device in the embodiment shown in FIG. 7 and illustrated in the above method embodiments.

An embodiment of the present application further provides a computer program product. The computer program product is configured to store a computer program. When a computer program is executed by a computer, the computer may implement a procedure related to the first terminal device in the embodiment shown in FIG. 14 and illustrated in the above method embodiments.

It should be understood that the processor in embodiments of the present application may be a CPU or may be another general purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate, transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

It should also be understood that the memory in embodiments of the present application may be volatile memory or non-volatile memory, or may include volatile memory and non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable PROM (EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), or flash memory. memory. Non-volatile memory can be random access memory (RAM) used as an external cache. By way of example, and not limitation, numerous forms of RAM may be used, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Channel Dynamic Random Access Memory (Synchlink DRAM, SLDRAM), Rambus Direct Access Memory (Direct Rambus RAM, DR RAM).

It should be noted that when the processor is a general purpose processor, a DSP, ASIC, FPGA or other programmable logic device, discrete gate, transistor logic device or discrete hardware component, memory (memory module) may be integrated into the processor.

It should be noted that the memory described herein is intended to include, but not be limited to, these memory devices and any other suitable type of memory.

It should be understood that the serial numbers of the above-described processes do not indicate the sequence of execution in the various embodiments of the present application. The execution sequences of the processes should be determined based on the functions and internal logic of the processes and should not be construed as any limitation on the processes for implementing the embodiments of this application.

One skilled in the art will recognize that, in combination with the examples described in the embodiments disclosed herein, the blocks and steps of the algorithm may be implemented using electronic hardware or a combination of computer software and electronic hardware. Whether functions are performed by hardware or software depends on the specific application and design constraints of the technology. One skilled in the art may employ different methods to implement the described functionality for each specific application, but implementation should not be considered beyond the scope of this application.

It will be clearly understood by one skilled in the art that for the purpose of convenient and concise description, reference should be made to the corresponding processes presented in the above-mentioned method embodiments to describe in detail the operating processes of the above-mentioned systems, devices and units. The details are not repeated in this document.

It should be understood that in several embodiments presented in this application, the disclosed system, apparatus and method may be implemented in other ways. For example, the described embodiments of the device are examples only. For example, blocking is only a logical division of functions and may be a different division during actual implementation. For example, many blocks or components may be combined or integrated into another system, or some functions may be ignored or not implemented. In addition, the displayed or discussed mutual connections, or direct connections or communication connections can be implemented using some interfaces. Indirect connections or communication connections between devices or units can be implemented in electrical, mechanical or other forms.

Blocks described as individual pieces may or may not be physically separate, and pieces depicted as blocks may or may not be physical blocks, to be precise, may be located in one location or may be distributed across multiple network blocks . Some or all of the blocks may be selected based on actual requirements to provide solutions to the technical problems of the embodiments.

In addition, the functional blocks provided in the embodiments of the present application may be integrated into a single processing unit, each of the blocks may physically exist on its own, or two or more blocks may be integrated into a single block.

When functions are implemented as a functional block of software and sold or used as an independent product, the functions may be stored on a computer-readable storage medium. Based on this understanding, the technical solutions of the present application, largely or partially complementing the prior art, or some of the technical solutions can be implemented in the form of a software product. The computer program product is stored on a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to perform all or some of the steps of the methods described in the embodiments of the present application. The above-mentioned storage medium includes: any storage medium on which program code can be stored, such as a USB flash drive, a removable hard drive, a read-only memory (ROM), a random access memory (RAM) ), magnetic disk or optical disk.

The foregoing description represents only specific implementations of the present application and is not intended to limit the scope of the protected embodiments of the present application. Any variation or substitution readily contemplated by one skilled in the art within the technical scope disclosed in the embodiments of this application shall fall within the scope of protection of the embodiments of this application. Thus, the scope of protection of the embodiments of the present application should correspond to the scope of protection of the claims.

Claims (107)

1. A method for selecting resources, containing: selecting a first resource for the first data from candidate resources contained in the resource pool, the candidate resources comprising resources whose received reference signal power is less than or equal to the first threshold value; And selecting at least one resource for the first data from a candidate resource different from the first resource in the candidate resources based on the first resource and the first slot, the first slot comprising a first time slot that satisfies requirements for two adjacent resources in the selected first resource and the selected at least one resource, and/or contains a first frequency slot that satisfies the requirements for two adjacent resources in the selected first resource and the selected at least one resource, where the number of candidate resources is greater than or equal to X% of the number of all resources contained in the resource pool, and the value of X meets the following condition: the value of X is set based on the target amount of resources; the value of X is set based on the target amount of resources and the first time interval; the value of X is set based on the target amount of resources, the first time slot and the first frequency slot; or the value of X is set based on service priority; And the total number of resources of the first resource and at least one resource is less than or equal to the target number of resources. 2. The method of claim 1, wherein the target amount of resources is related to the QoS of the first data and/or resource pool configuration information. 3. The method according to claim 1 or 2, wherein the value of X is set based on the number of resources to be selected, comprising: a larger target amount of resources, which indicates a larger X value. 4. The method according to claim 1 or 2, wherein the value X is set based on the target amount of resources and the first time interval, comprising: when the target amount of resources is fixed, a smaller first time interval that indicates a larger value of X. 5. The method according to claim 1 or 2, wherein the value X is set based on the target amount of resources, the first time slot and the first frequency slot, comprising: when the target amount of resources and the first time interval are fixed, a smaller first frequency interval which indicates a larger value of X. 6. The method according to claim 1 or 2, wherein the value of X is set based on service priority, comprising: higher service priority, which indicates a larger X value. 7. The method according to any one of claims 1-6, in which the method additionally contains: determining that there is no available candidate resource other than the first resource and the third resource, and that the total number of resources among the first resource and the third resource is less than the target amount of resources, wherein the third resource contains a selected resource other than the first resource in candidate resources; selecting a second resource from the candidate resources; And selecting one or more resources for the first data from candidate resources other than the second resource in the candidate resources based on the second resource and the first interval. 8. The method according to any one of claims 1 to 7, wherein selecting at least one resource from a candidate resource other than the first resource in the candidate resources based on the first resource and the first slot comprises: moving a time domain position of a first resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving, in part or in whole, as at least at least one resource, the first slot comprising a first time slot; moving a frequency domain position of a first resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by moving, in part or in whole, as at least at least one resource, the first slot comprising a first frequency slot; or moving the position of the first time domain resource as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving part or all of at least one resource, the first slot comprising a first time slot and a first frequency slot. 9. The method according to any one of claims 1 to 7, wherein selecting at least one resource from a candidate resource other than the first resource in the candidate resources based on the first resource and the first slot comprises: moving a time domain position of a first resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the first range does not contain a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval contains the first time interval; moving a frequency domain position of a first resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency slot, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not contain a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval contains the first frequency domain interval; or moving the position of the first time domain resource as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency bin, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by the movement, wherein the selected resource is partly or wholly of at least one resource, the third range does not include a time domain position a region between the time domain reference position and the time domain position obtained by the movement, or a frequency domain position between the frequency domain reference position and the frequency domain position obtained by the movement, and the first interval contains the first time interval and the first frequency interval. 10. A method for selecting resources, containing: selecting a first resource for the first data from a first candidate resource contained in the first resource pool, the first candidate resource comprising a resource whose received reference signal power is less than or equal to the first threshold value; determining, based on the first resource and the first slot, that an available candidate resource is not present in a candidate resource other than the first resource and a third resource in the first candidate resource, and that the total amount of the first resource and the third resource is less than the target amount of resources wherein the third resource contains a selected resource different from the first resource in the candidate resource, and the first slot contains a first time slot that satisfies the requirements of two adjacent resources in the selected first resource and the selected third resource, and/or contains a first frequency slot that satisfies the requirements for two adjacent resources in the selected first resource and the selected third resource; replacing the first resource pool with a second resource pool; And selecting, based on a second resource in the second resource pool and the first slot, at least one resource in a candidate resource different from a second resource in a second candidate resource contained in the second resource pool, wherein the second candidate resource contains a resource whose capacity the received reference signal is less than or equal to the first threshold value. 11. The method of claim 10, wherein the target amount of resources is related to the QoS of the first data and/or configuration information of the first resource pool. 12. The method according to claim 10 or 11, in which the second resource and the first resource are the same resource; or the method further comprises: selecting a second resource from a candidate resource contained in the second resource pool. 13. The method according to any one of claims 10-12, in which replacing the first resource pool with a second resource pool contains: moving a terminal position in the time domain of the first resource pool back in the time domain by a first time period to obtain a second resource pool; or moving a starting position in the time domain of the first resource pool back in the time domain for a second time period and moving an ending position in the time domain of the first resource pool back in the time domain for a third time period to obtain a second resource pool. 14. The method according to any one of claims 10 to 13, wherein selecting, based on the second resource and the first slot, at least one resource from a candidate resource other than the second resource in the second candidate resource contained in the second resource pool , contains: moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving, in part or in whole, as at least at least one resource, the first slot comprising a first time slot; moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain into a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by the move, in part or in whole as at least at least one resource, the first slot comprising a first frequency slot; or moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving part or all of at least one resource, the first slot comprising a first time slot and a first frequency slot. 15. The method according to any one of claims 10 to 13, wherein selecting, based on the second resource and the first slot, at least one resource from a candidate resource other than the second resource in the second candidate resource contained in the second resource pool , contains: moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the first range does not contain a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval contains the first time interval; moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency slot, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not contain a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval contains the first frequency domain interval; or moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by the movement, wherein the selected resource is partly or wholly of at least one resource, the third range does not include a time domain position a region between the time domain reference position and the time domain position obtained by the movement, or a frequency domain position between the frequency domain reference position and the frequency domain position obtained by the movement, and the first interval contains the first time interval and the first frequency interval. 16. Terminal communication device containing: a communication interface configured to communicate with another device; And a processor configured to: select a first resource for the first data from candidate resources contained in the resource pool, the candidate resources comprising resources whose received reference signal power is less than or equal to the first threshold value; And selecting at least one resource for the first data from a candidate resource different from the first resource in the candidate resources based on the first resource and the first slot, the first slot comprising a first time slot that satisfies requirements for two adjacent resources in the selected first resource and the selected at least one resource, and/or contains a first frequency slot that satisfies the requirements for two adjacent resources in the selected first resource and the selected at least one resource, where the number of candidate resources is greater than or equal to X% of the number of all resources contained in the resource pool, and the value of X meets the following condition: the value of X is set based on the target amount of resources; the value of X is set based on the target amount of resources and the first time interval; the value of X is set based on the target amount of resources, the first time slot and the first frequency slot; or the value of X is set based on service priority; And the total number of resources of the first resource and at least one resource is less than or equal to the target number of resources. 17. The terminal device of claim 16, wherein the target amount of resources is related to the QoS of the first data and/or resource pool configuration information. 18. The terminal device according to claim 16 or 17, wherein that the value of X is set based on the number of resources to be selected includes: a larger target amount of resources, which indicates a larger X value. 19. The terminal device according to claim 16 or 17, based on the target amount of resources and the first time interval, contains: when the target amount of resources is fixed, a smaller first time interval that indicates a larger value of X. 20. The terminal device according to claim 16 or 17, wherein the value X is set based on the target amount of resources, the first time slot and the first frequency slot, comprising: when the target amount of resources and the first time interval are fixed, a smaller first frequency interval which indicates a larger value of X. 21. The terminal device according to claim 16 or 17, wherein the value of X is set based on service priority, comprising: higher service priority, which indicates a larger X value. 22. The terminal device according to any one of claims 16-21, in which the processor is additionally configured to: determining that there is no available candidate resource other than the first resource and the third resource among the candidate resources, and that the total number of resources among the first resource and the third resource is less than the target amount of resources, wherein the third resource contains a selected resource other than the first resource in candidate resources; selecting a second resource from the candidate resources; And selecting one or more resources for the first data from candidate resources other than the second resource, in the candidate resources based on the second resource and the first interval. 23. The terminal device according to any one of claims 16 to 22, wherein the processor is configured to select at least one resource from a candidate resource other than the first resource in the candidate resources based on the first resource and the first slot as follows: moving a time domain position of a first resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving, in part or in whole, as at least at least one resource, the first slot comprising a first time slot; moving a frequency domain position of a first resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by moving, in part or in whole, as at least at least one resource, the first slot comprising a first frequency slot; or moving the position of the first time domain resource as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving part or all of at least one resource, the first slot comprising a first time slot and a first frequency slot. 24. The terminal device according to any one of claims 16 to 22, wherein the processor is configured to select at least one resource from a candidate resource other than the first resource in the candidate resources based on the first resource and the first slot as follows: moving a time domain position of a first resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the first range does not contain a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval contains the first time interval; moving a frequency domain position of a first resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency slot, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not contain a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval contains the first frequency domain interval; or moving the position of the first time domain resource as a reference position in the time domain forward and/or backward in the time domain by a first frequency interval, moving the position in the frequency domain of the first resource as a reference position in the frequency domain up and/or down in the frequency domain by a first frequency bin, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by the movement, wherein the selected resource is partly or wholly of at least one resource, the third range does not include a time domain position a region between the time domain reference position and the time domain position obtained by the movement, or a frequency domain position between the frequency domain reference position and the frequency domain position obtained by the movement, and the first interval contains the first time interval and the first frequency interval. 25. Terminal communication device containing: a communication interface configured to communicate with another device; And a processor configured to select a first resource for the first data from a first candidate resource contained in a first resource pool, wherein the first candidate resource comprises a resource whose received reference signal power is less than or equal to the first threshold, where the processor is further configured to determine, based on the first resource and the first slot, that an available candidate resource is not present in a candidate resource other than the first resource and a third resource in the first candidate resource, and that the total number of resources from among the first resource and a third resource is less than a target amount of resources, wherein the third resource contains a selected resource different from the first resource in the candidate resource, and the first slot contains a first time slot that satisfies the requirements for two adjacent resources in the selected first resource and the selected third resource, and/ or contains a first frequency slot that satisfies the requirements of two adjacent resources in the selected first resource and the selected third resource; the processor is further configured to replace the first resource pool with a second resource pool; And the processor is further configured to select, based on the second resource in the second resource pool and the first slot, at least one resource in the candidate resource different from the second resource in the second resource candidate contained in the second resource pool, wherein the second resource candidate contains a resource whose received reference signal power is less than or equal to the first threshold value. 26. The terminal device of claim 25, wherein the target amount of resources is related to the QoS of the first data and/or configuration information of the first resource pool. 27. The terminal device according to claim 25 or 26, in which the second resource and the first resource are the same resource; or the processor is further configured to select a second resource from a candidate resource contained in the second resource pool. 28. The terminal device according to any one of claims 25 to 27, wherein the processor is configured to replace the first resource pool with a second resource pool as follows: moving a terminal position in the time domain of the first resource pool back in the time domain by a first time period to obtain a second resource pool; or moving a starting position in the time domain of the first resource pool back in the time domain for a second time period and moving an ending position in the time domain of the first resource pool back in the time domain for a third time period to obtain a second resource pool. 29. The terminal device according to any one of claims 25 to 28, wherein the processor is configured to select, based on the second resource and the first slot, at least one resource from a candidate resource different from the second resource in the second candidate resource contained in the second resource pool, as follows: moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency slot, and using a candidate resource corresponding to the time domain position obtained by moving, in part or in whole, as at least at least one resource, the first slot comprising a first time slot; moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain into a first frequency slot, and using a candidate resource corresponding to the frequency domain position obtained by the move, in part or in whole as at least at least one resource, the first slot comprising a first frequency slot; or moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency slot, and using a candidate resource corresponding to both a time domain position and a frequency domain position that are obtained by moving part or all of at least one resource, the first slot comprising a first time slot and a first frequency slot. 30. The terminal device according to any one of claims 25 to 28, wherein the processor is configured to select, based on the second resource and the first slot, at least one resource from a candidate resource different from the second resource in the second candidate resource contained in the second resource pool, as follows: moving a time domain position of a second resource as a reference time domain position forward and/or backward in the time domain by a first frequency interval, and selecting a resource from a first range corresponding to the time domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the first range does not contain a position in the time domain between the reference position in the time domain and the position in the time domain obtained by moving, and the first interval contains the first time interval; moving a frequency domain position of a second resource as a reference frequency domain position up and/or down in a frequency domain by a first frequency slot, and selecting a resource from a second range corresponding to the frequency domain position obtained by moving, wherein the selected resource is partially or the entirety of at least one resource, the second range does not contain a frequency domain position between the reference frequency domain position and the frequency domain position obtained by moving, and the first interval contains the first frequency domain interval; or moving a time domain position of a second resource as a time domain reference position forward and/or backward in the time domain by a first frequency interval, moving a frequency domain position of a second resource as a frequency domain reference position up and/or down in a frequency domain by a first frequency bin, and selecting a resource from a third band corresponding to both a time domain position and a frequency domain position that are obtained by the movement, wherein the selected resource is partly or wholly of at least one resource, the third range does not include a time domain position a region between the time domain reference position and the time domain position obtained by the movement, or a frequency domain position between the frequency domain reference position and the frequency domain position obtained by the movement, and the first interval contains the first time interval and the first frequency interval. 31. A communication system, wherein the communication system comprises a terminal device according to any one of claims 16 to 24 or a terminal device according to any one of claims 25 to 30. 32. Machine-readable storage medium storing a computer program; and when the computer program is run on the computer, the computer may perform the method according to any one of claims 1 to 9. 33. Machine-readable storage medium storing a computer program; and when the computer program is executed on the computer, the computer may perform the method of any one of claims 10 to 15. 34. A communications device comprising one or more processors and a memory, wherein the one or more processors are coupled to the memory and the memory is configured to store instructions; and when the instructions are executed by one or more processors, the communication device may perform the method according to any one of claims 1 to 9. 35. A communications device comprising one or more processors and a memory, wherein the one or more processors are coupled to the memory and the memory is configured to store instructions; and when the instructions are executed by one or more processors, the communication device may perform the method of any one of claims 10-15.

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