WO2021228010A1 - Data transmission method and communication apparatus - Google Patents

Abstract

Disclosed are a data transmission method and apparatus, which are suitable for the fields of V2X, the Internet of Vehicles, intelligent connected vehicles, aided driving, etc., and are used for improving the reliability of information transmission in a system. The method of the embodiments of the present application comprises: a sending-end device acquiring configuration information, wherein the configuration information comprises first parameter information, and the first parameter information is used for determining the number of randomly selected first time slots; and the sending-end device randomly selecting, according to the number of the first time slots and from a time domain resource set, a first time slot for sidelink transmission, and then sending, on a frequency domain resource in the first time slot, data to be transmitted. In the embodiments of the present application, the random selection of a time slot resource by a sending-end device can be constrained by means of the number of first time slots and a time domain resource set determined on the basis of the first parameter information in the configuration information, such that the probability of a randomly selected resource colliding with a reserved resource is reduced, and thereby improving the reliability of information transmission by a communication apparatus in a system. Further provided is a communication apparatus.

Description

Data transmission method and communication device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on May 15, 2020 with the application number "202010417960.3" and the application name "A data transmission method and communication device", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of communication, and in particular to a data transmission method and communication device.

Background technique

The 3rd generation partnership project (3GPP) proposed a cellular vehicle to everything (cellular vehicle to everything, C-V2X) telematics communication technology. With the rapid development of the 5th generation of mobile communication (5G) technology, the 5th generation of new radio vehicle-to-everything (5G NR-V2X) technology based on the 5G new air interface has received more and more attention. With extensive attention, the technical performance of C-V2X has been further improved.

At present, 3GPP has carried out the standardization work of NR-V2X of the release 16 (Rel-16) standard. In the resource selection method of Rel-16, the communication device selects resources through a sensing mechanism. The sensing mechanism can be understood as sensing the use of resources by other communication devices in the surrounding environment through the sensing window, and then autonomously selecting resources for information transmission. Since there is no need to request transmission of information from the base station, no additional signaling is caused. Overhead. Although the sensing mechanism has certain advantages, continuously sensing the use of resources by other communication devices in the surrounding environment through the sensing window will increase the power of the communication device. In order to solve this problem, in the 17th version of the standard (release, Rel- In 17), the communication device no longer uses the sensing mechanism, but uses a random resource selection method to select resources for information transmission.

When the communication device of Rel-17 and the communication device of Rel-16 select resources in a resource pool, the random resource selection method will treat all resources in the resource pool as available resources, and these available resources include those of Rel-16. Resources that the communication device has reserved. When the communication device of Rel-17 selects the resource reserved by Rel-16, multiple communication devices will seize the same resource and conflicts in resource selection will occur, thereby reducing the reliability of the communication device in the system to transmit information. .

Summary of the invention

The embodiments of the present application provide a data transmission method and a communication device to improve the reliability of information transmission in the system. The data transmission method can be applied to a communication system that includes a sending end device, a receiving end device, and a network device. The sending end device and the receiving end device communicate through the PC5 interface. When the sending end device is within the coverage of the network device, the sending end device can obtain configuration information from the network device; both the sending end device and the receiving end device can be terminals; Or both the sending end device and the receiving end device can be the same type or different types of network devices (such as base stations); or the sending end device is a Road Side Unit (RSU), and the receiving end device is a terminal; or the sending end device is a road side unit (RSU). It is a terminal, and the receiving end device is an RSU; the execution subject of this method is the sending end device, or the execution subject of this method may be a processor in the sending end device, or a chip system. Optionally, the RSU can be a terminal or a base station.

In the first aspect, an embodiment of the present application provides a data transmission method. The sending end receives configuration information indicated by a network device through signaling in a sidelink resource pool. The configuration information includes first parameter information. Used to determine the number of randomly selected first time slots; randomly select time slots with the first number of time slots in the time domain resource set as candidate resources, and select the first time slot for side-line transmission from the candidate resources; Select at least one frequency domain resource from the plurality of frequency domain resources on the first time slot to send the data to be transmitted. In the embodiment of the present application, the number of first time slots and the set of domain resources determined by the first parameter information in the configuration information can restrict the random selection of time slot resources by the sending end device. The time-domain resource set may or may not include the resources reserved by the communication device of Rel-16, and the time-domain resource set does not include the resources reserved by the communication device of Rel-16, which can avoid preemption with the communication device of Rel-16 The same resource in this case. The time domain resource set includes the resources reserved by the communication device of Rel-16. Through the restriction of the number of first time slots, if the time domain resource set includes 10 time slot resources and the number of first time slots is 3, then the transmission The end device can randomly select 3 time slots out of 10 time slots, and select the first time slot from the 3 time slots for data transmission. Through the restriction of the number of first time slots, the random selection of resources and reserved resources can be reduced. The probability of conflicts, thereby improving the reliability of information transmitted by the communication devices in the system.

In an optional implementation manner, the first parameter information includes probability information and/or indication information of the number of first time slots; it is understandable that the randomly selected first parameter information can be directly or indirectly determined through the first parameter information. A number of time slots; the number of first time slots can be determined indirectly through probability information, and the indication information can directly indicate the number of first time slots. For example, the indication information is "2", and the number of the first time slot is 2.

In an optional implementation manner, randomly selecting the first time slot for side row transmission in the time domain resource set according to the first time slot quantity may include: randomly selecting the first time slot quantity in the time domain resource set For time slots, the first number of time slots are used as candidate resources, and then a first time slot is randomly selected from the candidate resources for data transmission.

In an optional implementation manner, the configuration information further includes time slot information, and the time slot information is used to determine the time domain resource set; according to the number of first time slots, the first time domain resource set used for side-line transmission is randomly selected in the time domain resource set. The time slot may include: the terminal determines the time domain resource set according to the starting time slot and time slot information, the starting time slot is the first time slot available for data transmission after the terminal obtains the data packet; in the time domain resource set Randomly select time slots of the first number of time slots; determine the first time slot among the time slots of the first number of time slots. In this example, the terminal device can determine the time domain resource set according to the time slot information configured by the network device.

In an optional implementation manner, the time slot information includes at least one of the last time slot that can be used to transmit data, the length of the interval between the start time slot and the last time slot, or the number of second time slots.

In an optional implementation manner, the probability information includes a first probability; the first probability is the probability of selecting the required frequency domain resource among multiple frequency domain resources in the time slot, and the terminal according to the first probability required by the data to be transmitted The number of frequency domain resources and the first probability determine the selectable frequency domain resources, and then the number of timeslots is determined according to the determined selectable frequency domain resources and the number of second frequency domain resources on one timeslot. In this example, considering the size of the data to be transmitted, the number of first time slots for random resource selection can be determined by the size of the data to be transmitted, the first probability, and the number of second frequency domain resources in one time slot.

In an optional implementation manner, the probability information includes multiple probability values, each of the multiple probability values corresponds to a time slot group, and a time slot group includes at least one time slot; the method may further include: Multiple probability values determine the first number of time slots in multiple time slot groups in the time domain resource set; in this example, the terminal can be controlled to randomly select the resource density through the division of time slot groups, for example, the probability values are the same, The time slots (candidate resources) that can be used for selection are dispersed as much as possible to reduce the probability that multiple terminals select resources to collide.

In an optional implementation manner, the nth probability value among the multiple probability values is less than or equal to the (n+1)th probability value, or the nth probability value is greater than or equal to the (n+1)th probability value Value; multiple probability values can be gradually increased, and multiple probability values can be gradually decreased. In this example, by configuring different probability values for different time slot groups, transmission congestion can be reduced. For example, for a relatively high time delay requirement, the probability value can be gradually reduced, so that data with high time delay requirement has more opportunities to select time slot resources in the time slot group with a higher position, so as to be sent first. For service data with low latency requirements, the probability value can be gradually increased, so that data with high latency requirements have more opportunities to select time slot resources in the later time slot groups, thereby reducing transmission congestion. The probability.

In an optional implementation manner, the probability information includes multiple probability values for determining the number of the first time slot, and the configuration information includes multiple probability values and multiple QoS values corresponding to the multiple probability values.

In an optional implementation manner, the method further includes: the sending end device determines a first QoS value, for example, the first QoS value may be a priority, and the probability value used when the sending end device sends data of different priorities Different, the first QoS value belongs to multiple QoS values; then the first probability value corresponding to the first QoS is determined according to the first QoS value, and the first probability value is used to determine the number of first time slots; in this example, the configuration is different The priority corresponds to different probability values (or the number of time slots), thereby reducing potential conflict conditions with R16 communication device selection resources, and further ensuring that high-priority services still have more opportunities to be sent first, which improves emergency messages The opportunity to send and reduce the transmission delay.

In an optional implementation manner, the QoS value is a parameter value of at least one of the channel busy ratio CBR, the channel occupancy ratio CR, and priority information.

In an optional implementation manner, the multiple QoS values are: multiple thresholds corresponding to multiple CBR preset ranges, and the method further includes: the sending end device obtains the CBR measurement value, the CBR measurement value may be measured by the terminal, or It can also be measured by other equipment and sent the measurement value to the terminal, or the measurement value can also be instructed by the base station; the CBR measurement value falls within the preset range of the first CBR, and the sending end device determines that it is in accordance with the first CBR preset range. The second probability value corresponding to the range, the second probability value is included in multiple probability values, and the second probability value is used to determine the number of first time slots; in this example, different CBR preset ranges can correspond to different probability values (or The number of time slots), the terminal obtains the measured value of the CBR, and the measured value belongs to the first CBR preset range, the first CBR preset range corresponds to the first probability value, and the first probability value is used to determine the candidate for the first time slot number Resources, through the restriction of the number of first time slots (candidate resources), the potential conflict with the reserved resources of the R16 communication device is reduced, which further ensures that under certain interference conditions, the chance of sending emergency messages is improved.

In an optional implementation manner, the first parameter information includes data initial transmission parameter values and data retransmission parameter values; the first time slot used for side-line transmission is randomly selected in the time domain resource set according to the number of first time slots It may specifically include: the data initial transmission parameter value and the data retransmission parameter value may be a probability value, or the data initial transmission parameter value and the data retransmission parameter value may also be a value, which may directly indicate the first time slot Quantity; the data to be transmitted is the initial transmission data, and the first time slot used for side-line transmission is randomly selected in the time domain resource set according to the number of the first time slot determined by the data initial transmission parameter value (such as the initial transmission parameter value); or , The data to be transmitted is retransmission data, and the first time slot used for side-line transmission is randomly selected in the time domain resource set according to the number of the first time slot determined by the data retransmission parameter value (such as the retransmission parameter value); Transmission data and retransmission data correspond to different probability values. According to different business requirements, the probability value of retransmission data can be configured to be greater than the probability value of initial transmission data, so that there are more opportunities to send retransmission data.

In an optional implementation manner, the terminal may determine the retransmission probability value or the initial transmission probability value, multiple retransmission probability values and priority parameter values, and multiple initial transmission probability values and priorities according to the priority of the data to be transmitted The specific corresponding relationship between the level parameter values. The terminal can determine the first priority of the data to be transmitted, and determine that the data to be transmitted is retransmitted data, and then determine the first priority corresponding to the first priority according to the corresponding relationship between the priority and the probability value. For the transmission probability value, the terminal determines the first time slot number according to the first retransmission probability value; further ensuring that high-priority services still have more opportunities to be sent first, which improves the chance of sending urgent messages and reduces the transmission delay.

In an optional implementation manner, the configuration information includes multiple CBR preset ranges and multiple corresponding retransmission probability values, and multiple corresponding initial transmission probability values; the terminal obtains the CBR measurement value; the CBR measurement value belongs to the first A CBR preset range, and the data to be transmitted is retransmission data, the terminal determines a second retransmission probability value corresponding to the first CBR preset range, the first CBR preset range belongs to multiple CBR preset ranges, and the first CBR preset range belongs to multiple CBR preset ranges. The double transmission probability value is used to determine the number of the first time slot; the data to be transmitted is the initial transmission data, and the terminal determines the second initial transmission probability value corresponding to the first CBR preset range, and the second initial transmission probability value is used to determine Number of first time slots.

In an optional implementation manner, the last time slot in the time domain resource set is located within the time slot corresponding to the time delay margin allowed for the transmission of the data to be transmitted.

In an optional implementation manner, the configuration information is indicated by signaling in the side row resource pool.

In the second aspect, the embodiments of the present application provide a communication device, which has the function of implementing the function performed by the sending end device of the first aspect described above; the function may be implemented by hardware or by hardware executing corresponding software; this The hardware or software includes one or more modules corresponding to the above functions, and the module includes a processing module and a transceiver module:

The transceiver module is used to obtain configuration information. The configuration information includes first parameter information. The first parameter information is used to determine the number of first time slots randomly selected; the processing module is used to obtain the first time slot number according to the time The first time slot used for side row transmission is randomly selected in the domain resource set; the transceiver module is also used to send the data to be transmitted on the first time slot. In the embodiment of the present application, the number of first time slots and the set of domain resources determined by the first parameter information in the configuration information can restrict the random selection of time slot resources by the sending end device. The time-domain resource set may or may not include the resources reserved by the communication device of Rel-16, and the time-domain resource set does not include the resources reserved by the communication device of Rel-16, which can avoid preemption with the communication device of Rel-16 The same resource in this case. The time domain resource set includes the resources reserved by the communication device of Rel-16. Through the restriction of the number of first time slots, if the time domain resource set includes 10 time slot resources and the number of first time slots is 3, then the transmission The end device can randomly select 3 time slots out of 10 time slots, and select the first time slot from the 3 time slots for data transmission. Through the restriction of the number of first time slots, the random selection of resources and reserved resources can be reduced. The probability of conflicts, thereby improving the reliability of information transmitted by the communication devices in the system.

In an optional implementation manner, the first parameter information includes probability information and/or indication information of the number of first time slots.

In an optional implementation manner, the processing module is further configured to randomly select time slots of the first number of time slots in the time domain resource set; and determine the first time slot among the time slots of the first number of time slots.

In an optional implementation, the configuration information also includes time slot information, which is used to determine the time domain resource set; the processing module is also used to determine the time domain resource set according to the starting time slot and time slot information, starting from The first time slot is the first time slot available for data transmission; the first time slot number of time slots is randomly selected in the time domain resource set; then the first time slot is determined from the first time slot number of time slots.

In an optional implementation manner, the time slot information includes at least one of the last time slot that can be used to transmit data, the length of the interval between the start time slot and the last time slot, or the number of second time slots.

In an optional implementation manner, the probability information includes a first probability; the processing module is also used to determine the number of resources in the first frequency domain required for the data to be transmitted, the first probability, and the second frequency domain in a time slot. The number of resources determines the number of time slots.

In an optional implementation manner, the probability information includes multiple probability values, each of the multiple probability values corresponds to a time slot group, and a time slot group includes at least one time slot; the processing module is also used for The first number of time slots is determined in the multiple time slot groups in the time domain resource set according to multiple probability values.

In an optional implementation manner, the nth probability value among the multiple probability values is less than or equal to the (n+1)th probability value, or the nth probability value is greater than or equal to the (n+1)th probability value value.

In an optional implementation manner, the probability information includes multiple probability values, and the configuration information includes multiple probability values and multiple QoS values corresponding to the multiple probability values.

In an optional implementation manner, the processing module is further configured to determine a first QoS value, the first QoS value belongs to multiple QoS values; the first probability value corresponding to the first QoS is determined according to the first QoS value, the first The probability value belongs to multiple probability values, and the first probability value is used to determine the number of first time slots.

In an optional implementation manner, the QoS value is a parameter value of at least one of the channel busy ratio CBR, the channel occupancy ratio CR, and priority information.

In an optional implementation manner, the multiple Qos values are: multiple thresholds corresponding to multiple CBR preset ranges; the processing module is also used to obtain the CBR measurement value; the CBR measurement value belongs to the first CBR preset range, A second probability value corresponding to the first CBR preset range is determined, the second probability value is included in multiple probability values, and the second probability value is used to determine the number of first time slots.

In an optional implementation manner, the first parameter information includes data initial transmission parameter values and data retransmission parameter values; the processing module is also used for the data to be transmitted as initial transmission data, and the first parameter information is determined according to the data initial transmission parameter values. The number of time slots is randomly selected in the time domain resource set for the first time slot used for side-line transmission; or, the data to be transmitted is retransmitted data, and the first time slot number determined according to the data retransmission parameter value is in the time domain The first time slot used for side-line transmission is randomly selected in the resource set.

In an optional implementation manner, the last time slot in the time domain resource set is located within the time slot corresponding to the time delay margin allowed for the transmission of the data to be transmitted.

In an optional implementation manner, the configuration information is indicated by signaling in the side row resource pool.

In a third aspect, an embodiment of the present application provides a communication device, including a processor, the processor is coupled to at least one memory, and the processor is configured to read a computer program stored in the at least one memory, so that the device executes any one of the above-mentioned first aspects. Item method.

In a fourth aspect, an embodiment of the present application provides a computer-readable medium for storing a computer program. When the computer program runs on a computer, the computer executes any one of the methods in the first aspect.

In a fifth aspect, an embodiment of the present application provides a chip including a processor and a communication interface, and the processor is configured to read instructions to execute any one of the methods in the first aspect.

Description of the drawings

FIG. 1 is a schematic diagram of a scene of a communication system in an embodiment of the application;

Figure 2 is a schematic diagram of a resource pool in an embodiment of the application;

FIG. 3 is a schematic flowchart of an embodiment of a data transmission method in an embodiment of this application;

FIG. 4 is a schematic diagram of a time domain resource set in an embodiment of this application;

FIG. 5 is a schematic structural diagram of an embodiment of a communication device according to an embodiment of the application;

FIG. 6 is a schematic structural diagram of another embodiment of a communication device according to an embodiment of the application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

The term "and/or" appearing in this application can be an association relationship describing associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, and A and B exist at the same time , There are three cases of B alone. In addition, the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.

The terms "first", "second", etc. in the description and claims of the application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in a sequence other than the content illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or modules is not necessarily limited to those clearly listed. Those steps or modules may include other steps or modules that are not clearly listed or are inherent to these processes, methods, products, or equipment.

The embodiments of the present application provide a data transmission method, which can be applied to a communication system including but not limited to a 5G communication system, a 6G communication system, a system that integrates multiple communication systems, or the future Evolved communication system. For example, the long term evolution (LTE) system, the new radio (NR) system, and the communication system related to the 3rd generation partnership project (3GPP). Referring to FIG. 1, the communication system includes a sending end device 101, a receiving end device 102, and a network device 103. The link between the sending end device 101 and the receiving end device 102 is a sidelink, that is, the sending end device 101 and the receiving end device 102 pass through the PC5 interface (the PC5 interface is a direct communication interface between V2X terminals). ) Communication. The sending end device 101 may be located within the coverage area of the network device 103, or may be located outside the coverage area of the network device 103 (out-of-coverage). When the sending end device 101 is located within the coverage area of the network device 103, the sending end device 101 may obtain configuration information from the network device 103. The configuration information includes first parameter information, and the first parameter information is used to determine the randomly selected first parameter information. For the number of time slots, the sending end device 101 may randomly select the first time slot for side-line transmission in the time domain resource set according to the first time slot number, and then send the data to be transmitted in the first time slot.

通过第一时隙数量的约束，可以降低选择资源与预留资源发生冲突的概率，从而提高系统中通信装置传输信息的可靠性。 In the embodiment of the present application, the number of first time slots and the set of domain resources determined by the first parameter information in the configuration information can restrict the random selection of time slot resources by the sending end device. The time-domain resource set may include the resources reserved by the communication device of Rel-16, or may not include the resources reserved by the communication device of Rel-16, and the time-domain resource set does not include the resources reserved by the communication device of Rel-16, then It can avoid the situation of preempting the same resources with the rel-16 communication device. If the time domain resource set includes Rel-16 communication device reserved time slot resources, for example, the time domain resource set includes 10 time slot resources, and the number of first time slots is 3, then the transmitting end device can be used for 10 time slots. Three time slots are randomly selected in the slot, and the first time slot is selected from the three time slots for data transmission. The probability that the reserved resources can be selected can be

Through the restriction of the number of first time slots, the probability of conflict between selected resources and reserved resources can be reduced, thereby improving the reliability of information transmission by the communication device in the system.

In this application, network equipment includes but is not limited to: evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, base station (gNodeB or gNB) in NR or transmission receiving point/transmission reception point, TRP), 3GPP subsequent evolution of the base station, wireless relay node, wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. The network device may also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario.

In this application, both the sending end device and the receiving end device can be terminals; or both the sending end device and the receiving end device can be network devices (such as base stations); or the sending end device is a roadside unit (RSU), The receiving end device is a terminal; or the sending end device is a terminal, and the receiving end device is an RSU. In this application, the PC5 interface can be used between the sending end device and the receiving end device to implement direct side link communication, and the specifics are not limited.

In this application, the terminal may also be referred to as terminal equipment, user equipment (UE), access terminal equipment, mobile station (MS), mobile terminal (MT), UE unit, UE station, Mobile station, mobile station, mobile equipment, UE terminal equipment, wireless communication equipment, machine terminal, UE agent or UE device, etc. In this application, a terminal particularly refers to a device capable of sidelink communication, such as an in-vehicle terminal, a terminal in self-driving (self-driving), a terminal in assisted driving, or a handheld terminal or mobile phone that can perform V2X communication. The terminal of the present application may be an in-vehicle module, an in-vehicle module, an in-vehicle component, an in-vehicle chip, or an in-vehicle unit built into a vehicle as one or more components or units.

In this application, V2X communication refers to the communication between the vehicle and anything outside, including vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian communication (V2P), and vehicle-to-infrastructure communication. Communication (vehicle to infrastructure, V2I), vehicle and network communication (vehicle to network, V2N).

LTE V2X communication can support communication scenarios with and without network coverage, and its resource allocation method can adopt the network access equipment scheduling mode, such as the E-UTRAN Node B (eNB) scheduling mode And UE optional mode. Based on V2X technology, vehicle users (vehicle UE, V-UE) can share some of their own information, such as position, speed, intent (such as turning, merging, and reversing) information periodically and information triggered by some non-periodical events Send to surrounding V-UEs, and similarly V-UEs will also receive information from surrounding users in real time.

In order to facilitate understanding, the words involved in this application will be described first.

Resource pool: Please refer to Figure 2 for understanding. In sidelink, a collection of multiple time slots 201 and frequency resources 202 that can be used to transmit data in the system form a resource pool. The multiple time slots 201 may be consecutive time slots. It may also be a discontinuous time slot. The multiple time slots can be a limited number of time slots, or can be time slots that repeatedly appear in a certain manner.

Time domain resource set: A collection of multiple time slots in the resource pool that can be used to transmit data. The time slots in the time domain resource concentration may be continuous or discontinuous in the resource pool. Optionally, the time domain resource set may be a subset of the resource pool. For example, the time domain resource set is a candidate resource set for the terminal to select resources. Or, optionally, the time domain resource set is a collection of all time slots in the resource pool, and the real time domain resource set may be equal to the resource pool.

The random determination or equiprobability determination used in this application refers to determining a specific position in a set in a random manner with the same probability value. For example, there are 10 time slots, and randomly determining a time slot among the 10 time slots means to select a time slot with the same probability in the 10 time slots with the same probability value (such as 0.1). That is, the probability of these 10 time slots being selected is the same, and which time slot is specifically selected is random. When there is a designated probability value, it will be generated with the corresponding designated probability value.

Please refer to FIG. 3, an embodiment of the present application provides a data transmission method. The execution body of the method is the sending end device, or the execution body of the method may be the processor, chip or chip system in the sending end device. . If the sending end device takes a terminal as an example, the execution body of the method may be a terminal, or a processor, chip, or chip system in the terminal, and the execution body of the method is explained by taking the terminal as an example.

Step 301: The terminal obtains configuration information, where the configuration information includes first parameter information, and the first parameter information is used to determine the number of first time slots randomly selected.

When the terminal is within the coverage of the network device, the terminal obtains configuration information from the network device, and the configuration information is the information indicated by the signaling in the sidelink resource pool. When the terminal is outside the coverage of the network device, the terminal obtains pre-configuration information, where the pre-configuration information is the information indicated by the signaling in the sidelink resource pool.

The first parameter information is parameter information for determining the number of randomly selected first time slots. It is understandable that the first parameter information can be used to directly or indirectly determine the number of randomly selected first time slots. Specifically, the first number of time slots may be composed of consecutive time slots in the resource pool, or may be composed of discontinuous time slots in the resource pool. Optionally, the first number of time slots may include only one time slot in the resource pool.

In the first optional implementation manner, the first parameter information is indication information of the first time slot quantity, and the indication information may directly indicate the first time slot quantity. For example, the indication information is "2", and the number of the first time slot is 2.

In the second optional implementation manner, the first parameter information is probability information, and the number of first time slots can be determined indirectly through the probability information. In an example of the second optional implementation manner, the probability information includes a first probability, the first probability is a parameter configured by the network device, and the first probability is among multiple frequency domain resources in the time slot The probability of selecting the required frequency domain resources.

The terminal according to the number of first frequency domain resources required for the data to be transmitted (for example, represented by "N"), the first probability (for example, represented by "P ₁ "), and the second frequency domain in a time slot The number of resources (as indicated by "R") determines the number of first time slots.

For example, according to the number of first frequency domain resources (N) and the first probability (P ₁ ) required for the data to be transmitted, the selectable frequency domain resources (for example, denoted by "M") are determined, where M= ceil(N/P ₁ ) (or M=floor(N/P ₁ ), ceil means round up, floor means round down.

The number of the first time slots (for example, denoted by "K") is determined according to the selectable frequency domain resources (M) and the number of second frequency domain resources (R) in a time slot, where K=ceil( M/R) (or K=floor(M/R)), the number of first time slots is K. M, N and K are all integers. It is understandable that the terminal needs to select N frequency domain resources from the M resources corresponding to the K time slots for data transmission. The manner of selecting N frequency domain resources may be determined in an equal probability manner.

For example: R=10, P=0.1, N=3, then M=30, K=3, that is, the number of first time slots is K=3;

Another example: R=10, P=0.3, N=3, then M=10, K=1, that is, the number of first time slots is K=1.

In this example, considering the size of the data to be transmitted, the number of first time slots for random resource selection is determined by the size of the data to be transmitted, the first probability, and the number of second frequency domain resources in one time slot.

In an example of the second optional implementation manner, the probability information includes a second probability, and the second probability is: the probability of randomly selecting a time slot in the time domain resource set, according to the first probability The second probability (denoted by "P ₂ ") and the number of time slots contained in the time domain resource set (denoted by "m") determine the first number of time slots. Number of first time slots=m×P ₂ . For example, if the second probability is 0.1, the number of time slots included in the time domain resource set is 10, and the number of first time slots is 1. P ₂ can also be understood as in the current time slot, only P _{2 has} the opportunity to select resources, which is equivalent to that the terminal is equally _{probabilistic on the floor (1/P 2} ) or ceil (1/P ₂ ) time slots Choose a transmission resource. For example, P=0.1, which is also equivalent to that the terminal determines the transmission resource from one time slot with equal probability on 10 consecutive time slots.

Optionally, the first parameter information includes indication information of the number of first time slots and probability information. The terminal may determine the number of one first time slot according to the probability information, and the indication information may indicate the number of another first time slot. The number of time slots may be the same or different. If the two first time slots are of different sizes, the terminal can determine which number of first time slots to select according to the current service. That is, choose a larger number of time slots or a smaller number of time slots. Alternatively, a larger (or smaller) number of first time slots can be selected in advance. Alternatively, the terminal may determine the number of first time slots according to the indication information and probability information of the first time slot. The probability information is a third probability, and the third probability is a probability of selecting a time slot from the number of time slots indicated by the indication information. For example, if the number of time slots indicated by the indication information is 20, and the third probability is 0.5, the number of first time slots is 20×0.5=10, and the number of first time slots is 10.

In another optional implementation manner, the first parameter information includes indication information and probability information of the first time slot quantity. The terminal directly determines the number of the first time slot according to the instruction information. The terminal then determines the first time slot in the time domain resource set according to the number of the first time slots and the probability information. For example, the number of first time slots indicated by the indication information is 20, and the third probability is 0.3. The terminal device selects the first time slot to be transmitted among the 20 first time slots with a probability of 0.3. The selected method can be any one of the 20 time slots. Optionally, a time slot selected for the first time with a probability of 0.3 among the 20 time slots may be used as the first time slot. For example, in 20 time slots, the probability of selecting the first time slot is 0.3, and the probability of not being selected is 0.7. In the first 2 time slots, the probability of selecting a time slot is 0.6, the probability of selecting in the first 3 time slots is 0.9, and the probability of selecting in the first 4 time slots is 1.2. When the terminal device selects a first time slot, it can stop further selection, and send the transmission data according to the selected first time slot.

Step 302: The terminal randomly selects the first time slot used for sideline transmission in the time domain resource set according to the number of the first time slots.

The terminal randomly selects the time slots of the first number of time slots in the time domain resource set, and the time slots of the first number of time slots can be used as candidate resources, and then randomly selects the time slots of the first number of time slots. Determine the first time slot. The random determination method can be determined in an equal probability method. For example, the time domain resource set contains 10 time slots, the number of the first time slot is 2, and the terminal randomly selects 2 time slots within 10 time slots as candidate resources. For example, the candidate resource is the second time slot and the second time slot. 5 time slots, the second time slot is randomly selected as the first time slot in the second time slot and the fifth time slot. Optionally, the terminal may determine the first number of timeslots from the beginning part of the time domain resource set, or determine the first number of timeslots from the middle or end part.

Optionally, among the time slots of the first number of time slots, the terminal selects the first time slot for side-line transmission from the first number of time slots in an equal probability manner. The first time slot can be one time slot or multiple time slots, depending on the number of time slots actually required for one side line transmission. When the number of the first time slots is greater than the number of the first time slots in actual transmission, the terminal selects the first time slot in actual transmission in an equiprobable manner among the number of first time slots.

The sideline transmission here refers to the sending or receiving of data through a sidelink.

The implementation of determining the time domain resource set includes at least:

In the first optional implementation manner, the size of the time domain resource set may be determined by a preset parameter value, and the time slot resource set includes a preset number of time slots. For example, if the preset number is x, the terminal determines the starting time slot that can be used to transmit data, and then from the starting time slot to the (x-1)th time slot as the time domain resource set, if x is 10, then The start time slot to the ninth time slot is the time domain resource set.

In the second optional implementation manner, the size of the time domain resource set can be determined when the terminal is implemented. For example, when the terminal transmits data packets to be transmitted from the upper layer (such as software, protocol stack or MAC layer) to the physical layer, the terminal determines the location and size of the time domain resource set according to factors such as the delay requirements of the data to be transmitted . Optionally, usually the start slot position of the time domain resource set after the data arrives, and the end slot position does not exceed the last slot position allowed by the delay remaining of the data packet to be transmitted.

In the third optional implementation mode, the configuration information also includes time slot information. The time slot information includes: the last time slot that can be used to transmit data, the length of the interval between the first time slot and the last time slot, or the second time At least one of the number of gaps.

The terminal may determine the time domain resource set according to the starting time slot and the time slot information. For example, the time slot information takes the number of second time slots as an example. The number of second time slots is y. The terminal determines the starting time slot that can be used to transmit data, and then starts from the starting time slot to the (y-1)th time slot. Time slots are the time domain resource set. For example, if y is 10, the time slot from the start time slot to the ninth time slot is the time domain resource set. For example, the time slot information is the last time slot, the last time slot is the ninth time slot, and the terminal determines that the ninth time slot from the start time slot to the ninth time slot after the start time slot is the time domain resource set. For example, the time slot information is the duration, and the duration is k time units, and multiple time slots included in the k time units starting from the start time slot constitute a time domain resource set.

Optionally, the last time slot in the time domain resource set is located within the time slot corresponding to the allowable delay margin for transmitting the data to be transmitted, that is, the time domain resource set includes the allowable delay The margin, the first time slot randomly selected in the time domain resource set will not exceed the allowable time delay to ensure reliable data transmission.

Step 303: The terminal sends the data to be transmitted in the first time slot.

Referring to FIG. 4, the terminal randomly selects one or more continuous frequency domain resources 402 from the multiple frequency domain resources in the first time slot 401 to send the data to be transmitted. The unit of the frequency domain resource may be a sub-channel or a resource block, etc., which is not specifically limited.

In the embodiment of the present application, the first time slot number and time domain resource set determined by the first parameter information in the configuration information are used as a constraint for the sending end device to select the time slot resource. The time domain resource set may or may not include the resources reserved by the communication device of Rel-16, and the time domain resource set does not include the resources reserved by the communication device of Rel-16, it can avoid continuous communication with the communication device of rel-16. This situation of preempting the same resources. The time domain resource set includes the resources reserved by the Rel-16 communication device. If the time domain resource set includes 10 time slot resources and the number of first time slots is 3, then the sending end device can be in 10 time slots Randomly select 3 time slots, and select the first time slot from the 3 time slots for data transmission. By restricting the number and/or location of the first time slots, the probability of conflict between selected resources and reserved resources can be reduced, thereby Improve the reliability of information transmitted by the communication device in the system.

In an optional implementation manner, in step 301, in a second optional implementation manner of the first parameter information, the probability information includes multiple probability values. Each probability value in the plurality of probability values corresponds to a time slot group. At least one time slot is included in a time slot group. The terminal may determine the first number of time slots in the multiple time slot groups in the time domain resource set according to the multiple probability values. Optionally, the number of time slot groups L can be at least one. When it is 1, the first number of time slots is determined in a set of configured time slots. Optionally, the number of time slots in each time slot group may be 1. When it is 1, there are a total of L time slots, and the first number of time slots is determined according to the correspondingly configured probability value for the L time slots.

For example, the correspondence between L time slot groups and multiple probability values is shown in Table 1 below:

Table 1

Time slot group A1 A2 … AL Probability value P1 P2 … PL

The number of time slots included in each group of time slots may be the same or different, and the number of time slots included in each time slot group is not specifically limited. The sum of the probability values of the L groups is less than or equal to 1, and the L probability values may be the same or different. For example, the time domain resource set contains 40 time slots. For the convenience of explanation, take the same number of time slots in each group of time slots as an example, L=4, each time slot group contains 10 time slots, and L probability values Same, both are 0.1. The probability value may be the probability value of the second probability in step 301 above.

In the first example, the probability values are the same. The terminal randomly selects 1 time slot in 10 time slots in time slot group A1 as a candidate resource, and the terminal randomly selects 1 time slot in 10 time slots in time slot group A2. Slots are used as candidate resources, etc., a total of L time slots are selected as candidate resources, and then the first time slot is randomly selected from L (the number of first time slots) candidate resources for data transmission. In this example, the density of random selection of resources by the terminal can be controlled through the division of time slot groups. For example, the time slots (candidate resources) available for selection are dispersed as much as possible, so as to reduce the probability of conflicts in the selection of resources by multiple terminals.

In the second example, the nth probability value among the multiple probability values is less than the (n+1)th probability value, and the multiple probability values gradually increase. For example, P1=0.1, P2=0.2, P3=0.3, P4=0.4. Alternatively, the nth probability value is greater than the (n+1)th probability value, and multiple probability values are gradually reduced. For example, P1=0.4, P2=0.3, P3=0.2, P4=0.1. In this example, by configuring different probability values for different time slot groups, transmission congestion can be reduced. For example, for relatively high delay requirements, the probability value can be gradually reduced, so that data with high delay requirements has more opportunities to select time slot resources in the earlier time slot group, so that it is sent first. For service data with low latency requirements, the probability value can be gradually increased, so that data with high latency requirements have more opportunities to select time slot resources in the later time slot groups, thereby reducing transmission congestion. The probability.

In an optional implementation manner, in step 302, the probability information includes multiple probability values, and the probability value may be the probability value of the first probability or the probability value of the second probability. The configuration information includes the multiple probability values and multiple quality of service (QoS) values corresponding to the multiple probability values. The QoS value is a parameter value of at least one of the channel busy rate (CBR), channel reservation (CR), and priority information, and the priority information is the priority of the data to be sent or the configured priority Threshold value. For example, the priority information may indicate the upper limit of the configured priority range, and these values correspond to corresponding probability values.

In the first example, the QoS value is the parameter value of the priority information. The corresponding relationship between multiple probability values and priority parameter values is shown in Table 2a. The corresponding relationship between multiple probability values and multiple priority thresholds is shown in the following table 2b shows:

Table 2a

priority 0 1 2 3 Probability value P0 P2 P3 P4

Table 2b

Priority threshold ≤1 ≤3 ≤5 ≤7 Probability value P0 P2 P3 P4

When the same terminal sends data of different priorities, the probability values used are different. Or, when different terminals send data of a specific priority, the probability value associated with the specific priority is used. Or, when different terminals send data of a specific priority, the area corresponding to the priority threshold in which they are located is determined according to the priority value of the data, and then the probability value corresponding to the area corresponding to the priority threshold is determined according to the priority threshold.

The terminal may determine according to the priority (first QoS value), for example, the first QoS value is 1. Then according to the corresponding relationship between the priority and the probability value (as shown in Table 2, priority 0 is high priority, priority 3 is low priority) to determine the first probability value corresponding to the first QoS value (such as P2 ), the terminal determines the number of first time slots according to the first probability value. The probability value in this example is explained by taking the probability value of the first probability as an example.

For example, the priority of UE1 to transmit data is 0, and the priority of UE2 to transmit data is 3. Refer to Table 2a above. The probability value corresponding to a priority of 0 is P0 (for example, P0=0.3). The probability value corresponding to a priority of 3 is P3 (for example, P4=0.1).

For example, the priority of UE1 to transmit data is 0, and the priority of UE2 to transmit data is 3. Refer to Table 2b above. A priority of 0 corresponds to the closest priority threshold upper limit of 1, and the corresponding probability value is P0 (for example, P0=0.3). A priority of 3 corresponds to the closest priority threshold upper limit of 3, and the corresponding probability value is P2 (for example, P2=0.1).

The number of first frequency domain resources required by UE1 to transmit data is N=3, the first probability P ₁ =0.3, and the number of second frequency domain resources in a time slot R=10, then K=1, which can be understood as UE1 The frequency domain resource to be transmitted can be selected on a time slot in the time domain resource set.

The number of first frequency domain resources required by UE2 to transmit data is N=3, the first probability P ₁ =0.1, and the number of second frequency domain resources in a time slot R=10, then K=3, which can be understood as UE2 The frequency domain resources to be transmitted can be selected on the 3 time slots in the time domain resource set.

In an optional solution, the indication information of the number of first time slots can indicate multiple values, and the value directly indicates the number of time slots. In this case, the value is the number of first time slots, multiple values and priority parameters. The corresponding relationship of the values is shown in Table 3 below:

table 3

priority 0 1 2 3 Numerical value 4 3 2 1

For example, the priority of UE1 to transmit data is 0, and the priority of UE2 to transmit data is 3. Refer to Table 3 above. A priority of 0 corresponds to a value of 4 (the number of first time slots is 4), and a priority of 3 corresponds to a value of 1 (the number of first time slots is 1).

The correspondence between multiple values and multiple priority thresholds is shown in Table 4 below:

Table 4

Priority threshold ≤0 ≤1 ≤2 ≤3 Numerical value 4 3 2 1

For example, the priority of UE1 to transmit data is 0, and the priority of UE2 to transmit data is 3. Refer to Table 4 above. For UE1 with a priority of 0, the closest priority threshold corresponding to an upper limit of 0 corresponds to a value of 4 (the number of first time slots is 4). For UE2 with a priority of 3, the closest priority threshold corresponding to the upper limit is 3, and the value corresponding to 3 is 1 (the number of first time slots is 1).

UE1 randomly selects 4 time slots in the time domain resource set, then randomly selects a time slot (first time slot) among the 4 time slots, and selects frequency domain resources on the first time slot.

UE2 randomly selects 1 time slot in the time domain resource set, and selects frequency domain resources in this time slot (ie, the first time slot).

In this example, different priority levels are configured to correspond to different probability values (or the number of time slots), thereby reducing potential conflict conditions with R16 communication device selection resources, and further ensuring that there are still more opportunities for high-priority services Priority sending improves the chance of urgent message sending and reduces transmission delay.

In the second example, the QoS value is the parameter value of CBR or the parameter value of CR. In this example, the parameter value with the QoS value of CBR is an example for description.

In this example, the probability information includes multiple probability values, and the configuration information includes multiple probability values and multiple CBR preset ranges corresponding to the multiple probability values. The correspondence between multiple probability values and multiple CBR preset ranges is shown in Table 5 below:

table 5

CBR preset range (0,0.3) (0.3, 0.4) (0.4,0.5) (0.5, 0.6) Probability value P1 P2 P3 P4

It should be noted that the foregoing Table 5 is only an exemplary description of the preset range of CBR for convenience of description, and is not a limitation.

The terminal obtains the CBR measurement value. The CBR measurement value may be measured by the terminal, or may be measured by another device, and sent to the terminal, or the measurement value may also be instructed by the base station. How to obtain The method of measuring the value is not limited. Optionally, the measured value of the CBR may be a value measured on some resources in the resource pool.

Determining a second probability value corresponding to the first CBR preset range if the CBR measurement value falls within a first CBR preset range, and the first CBR preset range belongs to the plurality of CBR preset ranges, The second probability value is included in the plurality of probability values, and the second probability value is used to determine the number of the first time slots.

For example, each CBR preset range corresponds to two thresholds, and the CBR measurement value is compared with the threshold corresponding to each preset range. If the CBR measurement value is greater than the first threshold and less than or equal to the second threshold, it is determined The CBR measurement value belongs to the first CBR preset range corresponding to the first threshold (such as 0) and the second threshold (such as 0.3), and the first CBR preset is determined according to the correspondence between the first CBR preset range and the probability value The probability value of the range association is P1.

The probability value is based on the probability value of the second probability. If P1=0.2 corresponding to the first CBR preset range, and the time domain resource set includes 10 time slots, then 2 time slots from the 10 time slots are selected as candidates Resource, select the first time slot from the 2 time slots. In an optional solution, the indication information of the first time slot quantity may indicate multiple values, as shown in Table 6.

Table 6

CBR preset range (0,0.3) (0.3, 0.4) (0.4,0.5) (0.5, 0.6) Numerical value 4 8 16 20

This value directly indicates the number of time slots. At this time, this value is the number of the first time slot. Multiple CBR preset ranges have corresponding relationships with multiple values. The CBR measurement value falls within the first CBR preset range, and a value (for example, 2) corresponding to the first CBR preset range is determined, and the value is the first time slot number. If the time domain resource set includes 10 time slots, 2 time slots from the 10 time slots are selected as candidate resources. Then the first time slot can be selected from the 2 time slots. In this example, different CBR preset ranges can correspond to different probability values (or the number of time slots), and the terminal obtains the measured value of CBR (or CR). If the measured value belongs to the first preset range of CBR, it determines the first The preset range of CBR corresponds to the first probability value, and the first probability value is used to determine the candidate resource of the first time slot quantity, and the restriction of the first time slot quantity (candidate resource) reduces the potential conflict with the reserved resources of the R16 communication device , Which further ensures that under certain interference conditions, the chance of sending urgent messages is improved.

In an optional implementation manner, the first parameter information includes initial data transmission parameter values and data retransmission parameter values. The initial data transmission parameter value and the data retransmission parameter value may be probability values. Alternatively, the initial data transmission parameter value and the data retransmission parameter value may also be a numerical value. This value can directly indicate the number of first time slots. The initial transmission parameter value is the initial transmission quantity value, and the retransmission parameter value is the retransmission quantity value. In this example, the initial transmission parameter value is based on the initial transmission probability value, and the retransmission parameter value is based on the retransmission probability value.

In step 302, the method for randomly selecting a first time slot for side-line transmission in a time domain resource set according to the number of the first time slot further includes:

It is determined whether the data to be transmitted is the initial transmission data or the retransmission data. If the serial number of the data to be transmitted is stored in the retransmission buffer, or a retransmission request for the data corresponding to the serial number has been received, it is determined that the data to be transmitted is retransmitted data. If the serial number of the data to be transmitted is not stored in the retransmission buffer, or the retransmission request of the data corresponding to the serial number is not received, it is determined that the data to be transmitted is the initial transmission data. It should be noted that the method of determining whether the data to be transmitted is retransmission data or initial transmission data is only an example and is not limited.

If the data to be transmitted is retransmitted data, the first time slot used for sideline transmission is randomly selected in the time domain resource set according to the number of the first time slots determined by the data retransmission parameter value.

If the data to be transmitted is initial transmission data, the first time slot used for sideline transmission is randomly selected in the time domain resource set according to the number of the first time slots determined by the data initial transmission parameter value.

The retransmission parameter value and the initial transmission parameter value are based on the probability value, the initial transmission parameter value is the initial transmission probability value, and the retransmission parameter value is the retransmission probability value. The retransmission parameter value may be greater than the initial transmission parameter value, and the retransmission probability value may be directly indicated in the configuration information, for example, the retransmission probability value is 0.3 and the initial transmission probability value is 0.2.

The probability value is an example of the probability value of the second probability, and the terminal determines the number of the first time slot according to the retransmission probability value and the number contained in the time domain resource set. Alternatively, the terminal determines the first time slot quantity according to the initial transmission probability value and the quantity contained in the time domain resource set.

Optionally, this example may also be combined with the foregoing optional implementation manners to determine the retransmission probability value or the initial transmission probability value.

In the first example, the terminal may determine the retransmission probability value or the initial transmission probability value according to the priority of the data to be transmitted. The corresponding relationship between multiple retransmission probability values and priority parameter values, and multiple initial transmission probability values and priority parameter values is shown in Table 7 below:

Table 7

priority 0 1 2 3 Retransmission probability value P1 P2 P3 P4 Probability of first pass P5 P6 P7 P8

The terminal may determine the first priority of the data to be transmitted, and determine that the data to be transmitted is retransmitted data. For example, the first priority is 1, and then the first retransmission probability value (such as P2) corresponding to the first priority is determined according to the corresponding relationship between the priority and the probability value (as shown in Table 7). The terminal determines the number of first time slots according to the first retransmission probability value.

There are two ways for the terminal to determine the number of first time slots according to the first retransmission probability value:

The first retransmission probability value is used as the probability value of the first probability, that is, the first frequency domain resource quantity N required by the terminal according to the data to be transmitted, the first retransmission probability value (the first probability " P ₁ "), and the number of second frequency domain resources (R) in one time slot determine the number of the first time slot.

Use the first retransmission probability value as the probability value of the second probability, which is determined according to the first retransmission probability value (the second probability "P ₂ ") and the number of time slots included in the time domain resource set The first number of time slots.

The terminal can determine the first priority of the data to be transmitted, and the data to be transmitted is the initial transmission data. For example, the first priority is 1, and then the first initial transmission probability value (such as P5) corresponding to the first priority is determined according to the corresponding relationship between the priority and the probability value (as shown in Table 7), and the terminal is determined according to the first initial transmission probability value (such as P5). The transmission probability value determines the number of the first time slot. There are also two ways for the terminal to determine the first time slot quantity according to the first initial transmission probability value: the first initial transmission probability value is the probability value of the second probability to determine the first time slot quantity. Or, the first initial transmission probability is the probability value of the first probability to determine the number of first time slots.

The corresponding relationship between multiple retransmission probability values and priority thresholds, and multiple initial transmission probability values and priority thresholds is shown in Table 8 below:

Table 8

Priority threshold ≤1 ≤3 ≤5 ≤7 Retransmission probability value P1 P2 P3 P4 Probability of first pass P5 P6 P7 P8

For example, the priority of UE1 to transmit data is 0, and the priority of UE2 to transmit data is 3. Refer to Table 8 above. UE1 with a priority of 0 corresponds to the closest priority threshold upper limit of 1. If the data to be transmitted is retransmitted data, the retransmission probability corresponding to "1" is P1 (for example, P1=0.3). If the data to be transmitted is the initial transmission data, the initial transmission probability value corresponding to "1" is P5 (for example, P5=0.2). The terminal determines the number of first time slots according to the retransmission probability value or the initial transmission probability value.

Optionally, the initial data transmission parameter value and the data retransmission parameter value may also be a numerical value, and the numerical value is used to indicate the number of the first time slot. The initial transmission parameter value is the initial transmission quantity value, and the retransmission parameter value is the retransmission quantity value.

The corresponding relationship between multiple retransmission quantity values and priority parameter values, and multiple initial transmission quantity values and priority parameter values is shown in Table 9 below:

Table 9

priority 0 1 2 3 Retransmission quantity value 5 4 3 2 The first pass quantity value 4 3 2 1

For example, the terminal determines the first priority of the data to be sent (for example, 0), and the data to be sent is retransmitted data. The terminal determines the first retransmission quantity value (such as 5) corresponding to the first priority according to the corresponding relationship between the priority and the retransmission quantity value (as shown in Table 9). The terminal determines that the number of first time slots is 5.

The terminal determines the first priority of the data to be sent (for example, 0), and the data to be sent is the initial transmission data. The terminal determines the first initial transmission probability value (such as 4) corresponding to the first priority according to the corresponding relationship between the priority and the number value of the initial transmission. The terminal determines that the number of first time slots is 4.

The corresponding relationship between multiple retransmission quantity values and priority thresholds, and multiple initial transmission quantity values and priority thresholds is shown in Table 10 below:

Table 10

priority ≤1 ≤3 ≤5 ≤7 Retransmission quantity value 5 4 3 2 The first pass quantity value 4 3 2 1

For example, the priority of UE1 to transmit data is 0, and the priority of UE2 to transmit data is 2. Refer to Table 10 above. A priority of 0 corresponds to the upper limit of the closest priority threshold of 1. If the data to be transmitted is retransmitted data, the value of the number of retransmissions corresponding to "1" is 5. The terminal determines that the number of first time slots is 5.

If the data to be transmitted is the initial transmission data, the value of the initial transmission quantity corresponding to "1" is 4. The terminal determines the number of first time slots according to the retransmission probability value or the initial transmission probability value. The terminal determines that the number of first time slots is 4.

In this example, the initial transmission data and the retransmission data correspond to different probability values (or values). According to the different needs of the business, the probability value of the retransmission data can be configured to be greater than the probability value of the initial transmission data, so that there are more opportunities to send retransmission. Transfer data. Further, different priority information corresponds to different retransmission probability values (or initial transmission probability values). Different priority information corresponds to different retransmission quantity values (or initial transmission quantity values). It further ensures that high-priority services still have more opportunities to be sent first, which improves the chances of sending urgent messages and reduces transmission delay.

In the second example, the terminal can determine the retransmission probability value or the initial transmission probability value according to the CBR (or CR) value. The configuration information includes multiple CBR preset ranges and multiple retransmission probability values corresponding to them, multiple CBR preset ranges and multiple initial transmission probability values corresponding to them. The correspondence between multiple retransmission probability values (multiple initial transmission probability values) and multiple CBR preset ranges is shown in Table 11 below:

Table 11

CBR preset range (0,0.3) (0.3, 0.4) (0.4,0.5) (0.5, 0.6) Retransmission probability value P1 P2 P3 P4 Probability of first pass P5 P6 P7 P8

The terminal obtains the CBR measurement value. If the CBR measurement value falls within the first CBR preset range (0, 0.3), and the data to be transmitted is retransmission data, the terminal determines a second retransmission probability value (such as P1) corresponding to the first CBR preset range. The first CBR preset range belongs to multiple CBR preset ranges, and the second retransmission probability value (such as P1) is used to determine the number of first time slots.

If the data to be transmitted is initial transmission data, the terminal determines a second initial transmission probability value (such as P5) corresponding to the first CBR preset range, and the second initial transmission probability value is used to determine the number of first time slots.

Optionally, the terminal may determine the retransmission quantity value or the initial transmission quantity value according to the CBR (or CR) value. The configuration information includes multiple CBR preset ranges and multiple retransmission quantity values corresponding to them, multiple CBR preset ranges and multiple initial transmission quantity values corresponding to them. The corresponding relationship between multiple retransmission quantity values (multiple initial transmission quantity values) and multiple CBR preset ranges is shown in Table 12 below:

Table 12

CBR preset range (0,0.3) (0.3, 0.4) (0.4,0.5) (0.5, 0.6) Retransmission quantity value 4 8 16 20 The first pass quantity value 2 6 12 18

The terminal obtains the CBR measurement value. If the CBR measurement value falls within the first CBR preset range (such as (0, 0.3)), and the data to be transmitted is retransmitted data. Refer to Table 12. The terminal determines the second retransmission quantity corresponding to the first CBR preset range Value (such as 4). The terminal determines that the number of first time slots is 4. The first CBR preset range belongs to multiple CBR preset ranges (such as (0, 0.3)), and the data to be transmitted is the initial transmission data. The terminal determines the first The number of one time slot is 2.

In this example, the initial transmission data and the retransmission data correspond to different probability values (or values). According to the different needs of the business, the probability value of the retransmission data can be configured to be greater than the probability value of the initial transmission data, so that there are more opportunities to send retransmission. Transfer data. Further, different CBR preset ranges may correspond to different retransmission probability values and initial transmission probability values. Or, different CBR preset ranges may correspond to different retransmission quantity values and initial transmission quantity values. The terminal obtains the measurement value of CBR (or CR). If the measurement value falls within the preset range of the first CBR, the preset range of the first CBR corresponds to the second retransmission probability value (or the second initial transmission probability value). The double transmission probability value (or the second initial transmission probability value) determines the number of the first time slot. Alternatively, the first CBR preset range corresponds to the second retransmission quantity value (or the second initial transmission quantity value), and the second retransmission quantity value (or the second initial transmission probability value) is the first time slot quantity. Through the constraint of the first number of time slot candidate resources, the potential conflict with the reserved resources of the R16 communication device is reduced, and the chance of sending emergency messages is improved under certain interference conditions.

Corresponding to the methods given in the foregoing method embodiments, the embodiments of the present application also provide corresponding devices, including corresponding modules for executing the foregoing embodiments. The module can be software, hardware, or a combination of software and hardware.

Figure 5 shows a schematic diagram of the structure of a communication device. The device 500 may be a network device, a terminal device, a drive test unit, a chip, a chip system, or a processor that supports the network device to implement the above method, or a terminal device that supports the above method. Method of chip, chip system, or processor, etc. The device can be used to implement the method described in the foregoing method embodiment, and for details, please refer to the description in the foregoing method embodiment.

The device 500 may include one or more processors 501, and the processor 501 may also be referred to as a processing unit, which may implement certain control functions. The processor 501 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processor can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, and process The data of the software program.

In an optional design, the processor 501 may also store instructions and/or data 503, and the instructions and/or data 503 may be executed by the processor, so that the apparatus 500 executes the above method embodiments. Described method.

In another alternative design, the processor 501 may include a transceiver unit for implementing receiving and sending functions. For example, the transceiver unit may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuits, interfaces, or interface circuits used to implement the receiving and transmitting functions can be separated or integrated. The foregoing transceiver circuit, interface, or interface circuit can be used for code/data reading and writing, or the foregoing transceiver circuit, interface, or interface circuit can be used for signal transmission or transmission.

In another possible design, the apparatus 500 may include a circuit, which may implement the sending or receiving or communication functions in the foregoing method embodiments.

Optionally, the apparatus 500 may include one or more memories 502, on which instructions 504 may be stored, and the instructions may be executed on the processor, so that the apparatus 500 executes the foregoing method embodiments. Described method. Optionally, data may also be stored in the memory. Optionally, instructions and/or data may also be stored in the processor. The processor and the memory can be provided separately or integrated together. For example, the corresponding relationship described in the foregoing method embodiment may be stored in a memory or in a processor.

Optionally, the device 500 may further include a transceiver 505 and/or an antenna 506. The processor 501 may be referred to as a processing unit, and controls the device 500. The transceiver 505 may be called a transceiver unit, a transceiver, a transceiver circuit, a transceiver device, or a transceiver module, etc., for implementing the transceiver function.

Optionally, the apparatus 500 in the embodiment of the present application may be used to execute the method described in FIG. 3 in the embodiment of the present application, and may also be used to execute various implementation methods and methods corresponding to the method embodiment corresponding to FIG. This is a way to achieve a combination of each other.

As shown in FIG. 6, another embodiment of the present application provides a communication device 600. The device may be a terminal or a component of the terminal (for example, an integrated circuit, a chip, etc.). Alternatively, the device may be a network device, or a component of a network device (for example, an integrated circuit, a chip, etc.). The device may also be another communication module, which is used to implement the method in the method embodiment of the present application. The apparatus 600 may include: a transceiver module 602 (or referred to as a transceiver unit). Optionally, it may also include a processing module 601 (or referred to as a processing unit) and a storage module 603 (or referred to as a storage unit).

In a possible design, one or more modules in Figure 6 may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors It can be implemented with a transceiver; or implemented by one or more processors, memories, and transceivers, which is not limited in the embodiment of the present application. The processor, memory, and transceiver can be set separately or integrated.

Optionally, each module in the apparatus 600 in the embodiment of the present application may be used to execute the method described in FIG. 3 in the embodiment of the present application, and may also be used to execute various implementation modes corresponding to the method embodiment corresponding to FIG. 3 Methods and methods of combining various implementation methods with each other.

In a possible design, a communication device 600 may include: a processing module 601 and a transceiver module 602.

The transceiver module 602 is configured to obtain configuration information, where the configuration information includes first parameter information, and the first parameter information is used to determine the number of first time slots randomly selected;

The processing module 601 is configured to randomly select the first time slot for side-line transmission in the time domain resource set according to the number of first time slots acquired by the transceiver module 602;

The transceiver module 602 is configured to send data to be transmitted in the first time slot.

Optionally, the first parameter information includes probability information and/or indication information of the number of the first time slots.

Optionally, the processing module 601 is further configured to: randomly select time slots of the first number of time slots in the time domain resource set; determine the time slots of the first number of time slots The first time slot.

Optionally, the configuration information further includes time slot information, and the time slot information is used to determine the time domain resource set;

The processing module 601 is further configured to determine the time domain resource set according to the start time slot and the time slot information, where the start time slot is the first time slot available for data transmission; The time slots of the first number of time slots are randomly selected in the domain resource set; the first time slot is determined among the time slots of the first number of time slots.

Optionally, the time slot information includes at least one of the last time slot that can be used to transmit data, the length of the interval between the start time slot and the last time slot, or the number of second time slots.

Optionally, the probability information includes a first probability; the processing module 601 is further configured to perform according to the number of first frequency domain resources required by the data to be transmitted, the first probability, and a time slot The number of second frequency domain resources determines the number of time slots.

Optionally, the probability information includes multiple probability values, each of the multiple probability values corresponds to a time slot group, and the one time slot group includes at least one time slot; the processing module 601 And is further configured to determine the first number of time slots in the multiple time slot groups in the time domain resource set according to the multiple probability values.

Optionally, the nth probability value in the plurality of probability values is less than or equal to the (n+1)th probability value, or the nth probability value is greater than or equal to the (n+1)th probability value Probability value.

Optionally, the probability information includes multiple probability values, and the configuration information includes: multiple probability values and multiple QoS values corresponding to the multiple probability values.

Optionally, the processing module 601 is further configured to: determine a first QoS value, where the first QoS value belongs to the multiple QoS values; and determine the corresponding value corresponding to the first QoS according to the first QoS value A first probability value, where the first probability value belongs to a plurality of the probability values, and the first probability value is used to determine the number of the first time slots.

Optionally, the QoS value is a parameter value of at least one of the channel busy ratio CBR, the channel occupation ratio CR, and priority information.

Optionally, the multiple Qos values are: multiple thresholds corresponding to multiple CBR preset ranges; the processing module 601 is further configured to: obtain a CBR measurement value; the CBR measurement value belongs to the first CBR preset Within the range, determine a second probability value corresponding to the first CBR preset range, the second probability value is included in the multiple probability values, and the second probability value is used to determine the first time slot quantity.

Optionally, the first parameter information includes data initial transmission parameter values and data retransmission parameter values; the processing module 601 is further configured to: the data to be transmitted is initial transmission data, and according to the data initial transmission parameters The first time slot number determined by the value is randomly selected in the time domain resource set for the first time slot used for side row transmission; or, the data to be transmitted is retransmitted data, and the data is retransmitted according to the data retransmission parameter value The determined number of the first time slots randomly selects the first time slot used for side-line transmission in the time domain resource set.

Optionally, the last time slot in the time domain resource set is located within the time slot corresponding to the allowable delay margin for transmitting the data to be transmitted.

Optionally, the configuration information is indicated by signaling in the side row resource pool.

It is understandable that some optional features in the embodiments of the present application may not be dependent on other features in certain scenarios, such as the solutions they are currently based on, but implemented independently to solve the corresponding technical problems and achieve the corresponding The effect can also be combined with other features according to requirements in certain scenarios. Correspondingly, the devices provided in the embodiments of the present application can also implement these features or functions accordingly, which will not be repeated here.

It can be understood that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.

The solution described in this application can be implemented in various ways. For example, these technologies can be implemented in hardware, software, or a combination of hardware. For hardware implementation, the processing unit used to execute these technologies at a communication device (for example, a base station, a terminal, a network entity, or a chip) can be implemented in one or more general-purpose processors, DSPs, digital signal processing devices, ASICs, etc. Programmable logic device, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination of the foregoing. The general-purpose processor may be a microprocessor. Alternatively, the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. accomplish.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), and synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

The present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the function of any of the foregoing method embodiments is realized.

This application also provides a computer program product, which, when executed by a computer, realizes the functions of any of the foregoing method embodiments.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.

It can be understood that in this application, "when", "if" and "if" all mean that the device will make corresponding processing under certain objective circumstances, and it is not a time limit, and it does not require the device to be implemented. There must be a judgmental action, but it does not mean that there are other restrictions.

The use of the singular element in this application is intended to mean "one or more", rather than "one and only one", unless otherwise specified. In this application, unless otherwise specified, "at least one" is intended to mean "one or more", and "multiple" is intended to mean "two or more".

The term "at least one of" or "at least one of" herein means all or any combination of the listed items, for example, "at least one of A, B and C", It can mean: A alone exists, B alone exists, C exists alone, A and B exist at the same time, B and C exist at the same time, and there are six cases of A, B and C at the same time, where A can be singular or plural, and B can be Singular or plural, C can be singular or plural.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

The same or similar parts in the various embodiments of the present application can be referred to each other. In each embodiment of this application, and each embodiment/implementation method/implementation method in each embodiment, if there is no special description and logical conflict, between different embodiments and each embodiment in each embodiment/ The terms and/or descriptions between the implementation methods/implementation methods are consistent and can be cited each other. The technical features in different embodiments and various implementation modes/implementation methods/implementation methods in each embodiment are based on their inherent Logical relationships can be combined to form new embodiments, implementations, implementation methods, or implementation methods. The implementation manners of the application described above do not constitute a limitation on the protection scope of the application.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application.

Claims (33)

A data transmission method, characterized in that it is applied to a sending end device, and includes: Acquiring configuration information, where the configuration information includes first parameter information, and the first parameter information is used to determine the number of first time slots randomly selected; Randomly selecting the first time slot used for side-line transmission in the time domain resource set according to the number of the first time slot; The data to be transmitted is sent on the first time slot. The method according to claim 1, wherein the first parameter information includes probability information and/or indication information of the number of the first time slots. The method according to claim 1, wherein the randomly selecting a first time slot for side-line transmission in a time domain resource set according to the number of the first time slot comprises: Randomly selecting time slots of the first number of time slots in the time domain resource set; The first time slot is determined among the time slots of the first number of time slots. The method according to claim 1, wherein the configuration information further comprises time slot information, and the time slot information is used to determine the time domain resource set; The randomly selecting a first time slot for side-line transmission in a time domain resource set according to the number of the first time slot includes: Determining the time domain resource set according to the starting time slot and the time slot information, where the starting time slot is the first time slot available for data transmission; Randomly selecting time slots of the first number of time slots in the time domain resource set; The first time slot is determined among the time slots of the first number of time slots. The method according to claim 4, wherein the time slot information includes the last time slot that can be used to transmit data, the length of the interval between the start time slot and the last time slot, or the number of second time slots At least one of them. The method according to claim 2, wherein the probability information includes a first probability; The number of time slots is determined according to the number of first frequency domain resources required for the data to be transmitted, the first probability, and the number of second frequency domain resources in one time slot. The method according to claim 2, wherein the probability information includes multiple probability values, each of the multiple probability values corresponds to a time slot group, and the one time slot group includes at least A time slot The method also includes: The first number of time slots is determined in the multiple time slot groups in the time domain resource set according to the multiple probability values. The method according to claim 7, wherein the nth probability value in the plurality of probability values is less than or equal to the (n+1)th probability value, or the nth probability value is greater than or equal to The (n+1)th probability value. The method according to claim 2, wherein the probability information includes a plurality of probability values used to determine the number of the first time slots, and the configuration information includes: A plurality of the probability values and a plurality of QoS values corresponding to the plurality of probability values. The method according to claim 9, wherein the method further comprises: Determine a first QoS value, where the first QoS value belongs to the multiple QoS values; A first probability value corresponding to the first QoS is determined according to the first QoS value, the first probability value belongs to a plurality of the probability values, and the first probability value is used to determine the first time slot quantity. The method according to claim 9 or 10, wherein the QoS value is a parameter value of at least one of the channel busy ratio (CBR), the channel occupation ratio (CR), and priority information. The method according to claim 9, wherein the multiple Qos values are: multiple thresholds corresponding to multiple CBR preset ranges, and the method further comprises: Obtain CBR measurement value; If the CBR measurement value belongs to a first CBR preset range, a second probability value corresponding to the first CBR preset range is determined, and the second probability value is included in the plurality of probability values, and the second probability value is included in the plurality of probability values. The probability value is used to determine the number of the first time slots. The method according to any one of claims 1-8, wherein the first parameter information includes data initial transmission parameter values and data retransmission parameter values; The randomly selecting a first time slot for side-line transmission in a time domain resource set according to the number of the first time slot includes: The data to be transmitted is initial transmission data, and the first time slot used for side-line transmission is randomly selected in the time domain resource set according to the first time slot number determined by the data initial transmission parameter value; or, The data to be transmitted is retransmitted data, and the first time slot used for sideline transmission is randomly selected in the time domain resource set according to the number of the first time slots determined by the data retransmission parameter value. The method according to any one of claims 1-13, wherein the last time slot in the time domain resource set is located within the time slot corresponding to the allowable delay margin for transmitting the data to be transmitted . The method according to any one of claims 1-14, wherein the configuration information is indicated by signaling in a side row resource pool. A communication device, characterized in that it comprises: A transceiver module, configured to obtain configuration information, where the configuration information includes first parameter information, and the first parameter information is used to determine the number of first time slots randomly selected; A processing module, configured to randomly select the first time slot for side-line transmission in the time domain resource set according to the number of first time slots acquired by the transceiver module; The transceiver module is also used to send data to be transmitted in the first time slot. The apparatus according to claim 16, wherein the first parameter information comprises probability information and/or indication information of the number of the first time slots. The device according to claim 16, wherein the processing module is further configured to: Randomly selecting time slots of the first number of time slots in the time domain resource set; The first time slot is determined among the time slots of the first number of time slots. The apparatus according to claim 16, wherein the configuration information further comprises time slot information, and the time slot information is used to determine the time domain resource set; The processing module is also used for: Determining the time domain resource set according to the starting time slot and the time slot information, where the starting time slot is the first time slot available for data transmission; Randomly selecting time slots of the first number of time slots in the time domain resource set; The first time slot is determined among the time slots of the first number of time slots. The device according to claim 19, wherein the time slot information includes the last time slot that can be used to transmit data, the length of the interval between the start time slot and the last time slot, or the number of second time slots At least one of them. The apparatus according to claim 17, wherein the probability information comprises a first probability; The processing module is further configured to determine the number of time slots according to the number of first frequency domain resources required for the data to be transmitted, the first probability, and the number of second frequency domain resources in one time slot. The apparatus according to claim 17, wherein the probability information comprises a plurality of probability values, and each probability value of the plurality of probability values corresponds to a time slot group, and the one time slot group includes at least A time slot The processing module is further configured to determine the first number of time slots in the multiple time slot groups in the time domain resource set according to the multiple probability values. The apparatus according to claim 22, wherein the nth probability value in the plurality of probability values is less than or equal to the (n+1)th probability value, or the nth probability value is greater than or equal to The (n+1)th probability value. The apparatus according to claim 17, wherein the probability information includes a plurality of probability values, and the configuration information includes: a plurality of the probability values and a plurality of QoS values corresponding to the plurality of probability values. The device according to claim 24, wherein the processing module is further configured to: Determine a first QoS value, where the first QoS value belongs to the multiple QoS values; A first probability value corresponding to the first QoS is determined according to the first QoS value, the first probability value belongs to a plurality of the probability values, and the first probability value is used to determine the first time slot quantity. The device according to claim 24 or 25, wherein the QoS value is a parameter value of at least one of the channel busy ratio (CBR), the channel occupation ratio (CR), and priority information. The device according to claim 24, wherein the multiple Qos values are: multiple thresholds corresponding to multiple CBR preset ranges; The processing module is also used for: Obtain CBR measurement value; If the CBR measurement value belongs to a first CBR preset range, a second probability value corresponding to the first CBR preset range is determined, and the second probability value is included in the plurality of probability values, and the second probability value is included in the plurality of probability values. The probability value is used to determine the number of the first time slots. The device according to any one of claims 16-23, wherein the first parameter information comprises a data initial transmission parameter value and a data retransmission parameter value; The processing module is also used for: The data to be transmitted is initial transmission data, and the first time slot used for side-line transmission is randomly selected in the time domain resource set according to the first time slot number determined by the data initial transmission parameter value; or, The data to be transmitted is retransmitted data, and the first time slot used for sideline transmission is randomly selected in the time domain resource set according to the number of the first time slots determined by the data retransmission parameter value. The apparatus according to any one of claims 16-28, wherein the last time slot in the time domain resource set is located within the time slot corresponding to the allowable delay margin for transmitting the data to be transmitted . The apparatus according to any one of claims 16-29, wherein the configuration information is indicated by signaling in a side row resource pool. A communication device, characterized by comprising a processor, the processor is coupled with at least one memory, and the processor is configured to read a computer program stored in the at least one memory, so that the device executes as claimed in claim 1. The method of any one of to 15. A computer-readable medium, wherein the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer can execute any one of claims 1 to 15 The method described. A chip, characterized by comprising a processor and a communication interface, the processor being used for reading instructions to execute the method according to any one of claims 1-15.

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