WO2022032681A1 - Data transmission method and communication apparatus - Google Patents

Abstract

The present application provides a data transmission method and a communication apparatus. Said method comprises the following steps: a terminal device receiving a first resource configuration and a second resource configuration from a network device, wherein the first resource configuration is used for configuring one or more first uplink resources, and the second resource configuration is used for configuring a second uplink resource used for subsequent uplink data transmission; the first uplink resource is used for transmitting all or a first part of uplink data; the second uplink resource is used for transmitting the remaining part of the uplink data other than the first part; and the remaining part may also be referred to as subsequent transmission data. When the terminal device is in a radio resource control (RRC) idle state or an RRC_inactive state, the uplink data is transmitted to the network device on the basis of the first resource configuration and the second resource configuration. By configuring a second resource for a terminal device, the present invention can be applicable to early transmission of uplink data in more scenarios, expanding the requirements on uplink data by early transmission of uplink data, and optimizing the performance of early transmission of uplink data.

Description

A data transmission method and communication device technical field

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

Background technique

When a terminal device has an uplink data transmission requirement, it can transmit uplink data based on a dynamic grant (grant based, GB) or dynamic scheduling manner, and the specific process may include the following steps. The terminal device reports a non-empty buffer state report (BSR) to the network device, and the network device sends downlink control information (DCI) to the terminal device, and the DCI carries an uplink grant (UL grant). In some scenarios, such as machine type communication (MTC), massive machine type communication (mMTC) or narrow band internet of things (NB-IoT) communication scenarios, The data volume of the data to be transmitted by the terminal device is small (may be referred to as small packet data), and the terminal device has the requirement of low power consumption. If the terminal device transmits uplink data based on GB or dynamic scheduling, the system overhead is too large, the resource utilization efficiency is low, the power consumption of the terminal is too large, and the data transmission delay requirement cannot be met.

In the prior art, a terminal device in a radio resource control (radio resource control, RRC) idle (idle) state or an RRC inactive (inactive) state can transmit small packet data in a random access (random access, RA) process, Or transmit small packet data based on grant-free (grant-free, GF) resource configuration without the need to perform state transition to enter the RRC connection state and transmit small packet data based on GB or dynamic scheduling. This can save signaling overhead and reduce terminal power consumption.

However, if the data volume of the small packet data to be transmitted by the terminal equipment is relatively large, the small packet data of the terminal equipment cannot be completely transmitted at one time during the RA process or the resource configuration based on the GF. Therefore, the transmission method of small packet data needs to be further improved.

SUMMARY OF THE INVENTION

The present application provides a data transmission method and a communication device, in order to solve the problem that the small packet data of the terminal device cannot be transmitted at one time during the RA process or the resource configuration based on GF.

In a first aspect, a data transmission method is provided, and the method can be executed by a terminal device or by a component of the terminal device (eg, a processor, a chip, or a chip system, etc.). The method may be implemented by the following steps: receiving a first resource configuration and a second resource configuration from a network device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is used to configure The second uplink resource used for subsequent uplink data transmission, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the uplink data except the first part. The remaining part: when in the RRC idle state or the RRC_inactive INACTIVE state, transmit the uplink data to the network device based on the first resource configuration and the second resource configuration. The first resource configuration and the second resource configuration are used to configure uplink transmission resources and uplink transmission parameters. And the second resource configuration is used to configure resources and/or transmission parameters for subsequent uplink data transmission. The first part of the uplink data may be referred to as initial transmission data, and the remaining part of the uplink data other than the first part may be referred to as subsequent transmission data. By configuring the second resource configuration for the terminal device for subsequent uplink data transmission, it is applicable to early uplink data transmission in more scenarios, broadens the requirements for uplink data early transmission, and optimizes the performance of uplink data early transmission. In addition, all uplink data transmission can be completed without the terminal equipment performing state transition to enter the connected state, saving signaling overhead caused by state transition, and helping to save energy consumption of the terminal equipment.

In a possible design, subsequent uplink data transmission may refer to a terminal device in an RRC idle state or an RRC inactive state that fails to transmit the uplink data to be transmitted at one time during the early data transmission process, and remains in the same state. (that is, in the case of entering the connection state without state transition), the transmission for the transmission of subsequent transmission data.

In a possible design, the subsequent uplink data transmission may also refer to that the terminal equipment in the RRC idle state or the RRC inactive state fails to transmit the to-be-transmitted uplink data at one time during the early data transmission process, and does not transmit the uplink data in the hold state. In the case of changing (that is, entering the connected state without performing state transition), before receiving the RRC release instruction sent by the network device, the transmission is performed for the transmission of subsequent transmission data.

Optionally, the uplink data may refer to data for a single logical channel or a single logical channel group. Uplink data may also refer to a single data radio bearer (DRB) or to a single data radio bearer group.

In a possible design, transmitting the uplink data to the network device based on the first resource configuration and the second resource configuration may include the following situation: when the data volume of the uplink data is less than or equal to the When the amount of data that can be transmitted by the first uplink resource at one time, transmit the uplink data to the network device based on the first uplink resource; or, when the data amount of the uplink data is greater than the amount of data transmitted by the first uplink resource at one time. When the amount of data that can be transmitted is transmitted, the first part of the uplink data is transmitted to the network device based on the first uplink resource, and the division of the uplink data is transmitted to the network device based on the second uplink resource. The remainder of the first part.

In a possible design, the amount of data of the first part is the amount of data that can be transmitted at one time by the first uplink resource. When the amount of uplink data is greater than the amount of data that can be transmitted at one time by the first uplink resource, transmit the first part of the uplink data to the network device based on the first uplink resource, and transmit the first part of the uplink data to the network device based on the second uplink resource. the remainder other than one part.

In a possible design, the first uplink resource and the second uplink resource may be associated.

The possible association forms of the first uplink resource and the second uplink resource may include the following possible forms:

(1) The first resource configuration includes a first period; the second resource configuration includes a second period; the interval between the start position of the second uplink resource and the end position of the first uplink resource is the length of the second period;

(2) The first resource configuration includes a first period; the second resource configuration includes a second period; the second resource configuration includes a first offset value, and the first offset value is, in a first In one cycle, the offset value between the start position of the second uplink resource and the end position of the first uplink resource;

(3) The first resource configuration includes a first period; the second resource configuration includes a second period; the second resource configuration includes a second offset value, and the second offset value is, in a first Within a period, the offset value between the start position of the second uplink resource and the time when the response message is received, and the response message is used to respond to the uplink data transmitted on the first uplink resource.

(4) The first resource configuration includes a first cycle; the second resource configuration includes a third offset value and a time interval; wherein the third offset value is, within a first cycle, the The offset value between the start position of the second uplink resource and the end position of the first uplink resource; the time interval is the time interval between two adjacent transmission resources in the second uplink resource.

The first time unit may be any one of the following: a time slot, a symbol, a subframe, and a frame. The second period takes the second time unit as a unit, and the second time unit may be any one of the following: a time slot, a symbol, a subframe, and a frame.

It can be seen that the interval of the first cycle is relatively large. If the terminal device waits for the first uplink resource to send subsequent transmission data after sending the initial transmission data to the network device, the delay will increase. By configuring the second uplink resource, the terminal device can send subsequent transmission data on the second uplink resource, thereby improving the efficiency of subsequent uplink transmission and reducing the delay.

Optionally, optional configuration methods for the first resource configuration and the second resource configuration are as follows.

In a possible manner a, first system information from a network device is received, where the first system information includes the first resource configuration and the second resource configuration; or, the first RRC from the network device is received A release message, where the first RRC release message includes the first resource configuration and the second resource configuration.

Or, receive second system information from a network device, where the second system information includes the first resource configuration; receive a second RRC release message from a network device, where the second RRC release message includes the first resource configuration 2. Resource allocation.

In the case of mode a, the first part of the uplink data is sent to the network device on the first uplink resource, and a first message from the network device is received, where the first message is used to respond to the In the first part of the uplink data, the first message is used to activate the second resource configuration, or the first message is used to reconfigure the second resource configuration, or the first message is used to update the second resource configuration.

The first uplink resource may be a random access resource, and the first message may be a message Msg4 in a four-step random access process or a message MsgB in a two-step random access process; or, the first The uplink resource may be an unlicensed GF resource, and the first message may be a response message of the first part of the uplink data.

In a possible manner b, before the data early transmission process, the network device configures the first resource configuration for the terminal device. After the terminal device sends the initial transmission data to the network device on the first uplink resource, the network device configures the second resource configuration for the terminal device. For example, the second resource configuration is carried in any one of the following messages: Msg4 in the four-step random access procedure, MsgB or GFR message in the two-step random access procedure.

In a possible manner c, the terminal device acquires the first resource configuration and the second resource configuration through the manner a before the data early transmission process. The terminal device sends initial transmission data to the network device on the first uplink resource, and after receiving the initial transmission data, the network device sends a first message to the terminal device. The first message is used to activate the second resource configuration, or the first message is used for to reconfigure the second resource configuration, or the first message is used to update the second resource configuration. The network device configures the second resource configuration for the terminal device through the method a, and after receiving the initial transmission data, by sending a first message to the terminal device to reconfigure or update the second resource configuration, the parameters of the second resource configuration can be optimized, so that the first The second resource configuration is more suitable for subsequent uplink data transmission. Alternatively, a more suitable second resource configuration may be adapted according to the auxiliary information sent by the terminal device to improve resource utilization.

In a possible design, the second resource configuration includes at least one of the following types of parameters: period of time-domain resources, parameters related to open-loop power control, waveform, redundancy version sequence, number of repetitions, frequency hopping mode, resource Allocation type, HARQ process number of HARQ, demodulation reference signal DMRS related parameters, modulation and coding scheme MCS table, resource block RBG group size, time domain resource, frequency domain resource or MCS.

In a possible design, first information may also be sent to the network device, where the first information is used to indicate a mode supported or expected by the terminal device for subsequent uplink data transmission. The first information may be capability information of the terminal device. The first information may also be configuration request information.

In a possible design, second information may also be reported to the network device, where the second information is used to indicate whether the terminal device supports or expects retransmission based on dynamic authorization. In a possible design, third information may also be reported to the network device, where the third information is used to indicate whether the terminal device supports or expects to monitor physical layer HARQ feedback information.

In a second aspect, a data transmission method is provided, and the method can be executed by a network device or by a component of the network device (for example, a processor, a chip, or a chip system, etc.). The method can be implemented by the following steps: sending a first resource configuration and a second resource configuration to the terminal device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is used for configuration In the second uplink resource for subsequent uplink data transmission, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the remainder of the uplink data except the first part part; receiving the uplink data from the terminal device based on the first resource configuration and the second resource configuration. The first part of the uplink data may be referred to as initial transmission data, and the remaining part of the uplink data other than the first part may be referred to as subsequent transmission data. By configuring the second resource configuration for the terminal device for subsequent uplink data transmission, it is applicable to early uplink data transmission in more scenarios, broadens the requirements for uplink data early transmission, and optimizes the performance of uplink data early transmission. In addition, all uplink data transmission can be completed without the terminal equipment performing state transition to enter the connected state, saving signaling overhead caused by state transition, and helping to save energy consumption of the terminal equipment.

In a possible design, subsequent uplink data transmission may refer to a terminal device in an RRC idle state or an RRC inactive state that fails to transmit the uplink data to be transmitted at one time during the early data transmission process, and remains in the same state. (that is, in the case of entering the connection state without state transition), the transmission for the transmission of subsequent transmission data.

In a possible design, the subsequent uplink data transmission may also refer to that the terminal equipment in the RRC idle state or the RRC inactive state fails to transmit the to-be-transmitted uplink data at one time during the early data transmission process, and does not transmit the uplink data in the hold state. In the case of changing (that is, entering the connected state without performing state transition), before receiving the RRC release instruction sent by the network device, the transmission is performed for the transmission of subsequent transmission data.

Optionally, the uplink data may refer to data for a single logical channel or a single logical channel group. Uplink data may also refer to a single data radio bearer (DRB) or to a single data radio bearer group.

In a possible design, the amount of data of the first part is the amount of data that can be transmitted at one time by the first uplink resource.

In a possible design, the first uplink resource and the second uplink resource may be associated. For possible association forms of the first uplink resource and the second uplink resource, reference may be made to the description of the first aspect.

Optionally, optional configuration methods for the first resource configuration and the second resource configuration are as follows.

In a possible design, sending the first resource configuration and the second resource configuration to the terminal device includes:

In a possible manner a, first system information is sent to the terminal device, where the first system information includes the first resource configuration and the second resource configuration; or, the first system information is sent to the terminal device An RRC release message, where the first RRC release message includes the first resource configuration and the second resource configuration.

Or, send second system information to the terminal device, where the second system information includes the first resource configuration; send a second RRC release message to the terminal device, where the second RRC release message includes the Describe the second resource configuration.

In the case of mode a, the first part of the uplink data from the terminal device is received on the first uplink resource, and a first message is sent to the terminal device, where the first message is used to respond to the In the first part of the uplink data, the first message is used to activate the second resource configuration, or the first message is used to reconfigure the second resource configuration, or the first message is used to update the second resource configuration.

Wherein, the first uplink resource is a random access resource, and the first message is a message Msg4 in a four-step random access process or a message MsgB in a two-step random access process; or, the first uplink resource In order to exempt GF resources, the first message is a response message of the first part of the uplink data.

In a possible manner b, before the data early transmission process, the network device configures the first resource configuration for the terminal device. After the terminal device sends the initial transmission data to the network device on the first uplink resource, the network device configures the second resource configuration for the terminal device. For example, the second resource configuration is carried in any of the following messages: Msg4 in the four-step random access procedure, MsgB or GFR message in the two-step random access procedure.

In a possible way c, the network device configures the second resource configuration for the terminal device through the way a, and after receiving the initial transmission data, reconfigures or updates the second resource configuration by sending a first message to the terminal device, which can optimize the first The parameters of the second resource configuration make the second resource configuration more suitable for subsequent uplink data transmission. Alternatively, a more suitable second resource configuration may be adapted according to the auxiliary information sent by the terminal device to improve resource utilization.

In a possible design, the second resource configuration includes at least one of the following types of parameters: period of time-domain resources, parameters related to open-loop power control, waveform, redundancy version sequence, number of repetitions, frequency hopping mode, resource Allocation type, HARQ process number of HARQ, demodulation reference signal DMRS related parameters, modulation and coding scheme MCS table, resource block RBG group size, time domain resource, frequency domain resource or MCS.

In a possible design, first information from the terminal device is received, where the first information is used to indicate a mode supported or expected by the terminal device for subsequent uplink data transmission. The first information may be capability information of the terminal device. The first information may also be configuration request information.

Optionally, the network device sends the fourth information to the terminal device, and the terminal device receives the fourth information from the network device. The fourth information may be used to indicate any one or more of the following: indicating whether the terminal device performs subsequent uplink transmission; instructing the terminal device to use for subsequent uplink data transmission; and configuring resources for subsequent uplink data transmission.

In a third aspect, a communication device is provided. The communication device may be a terminal device, or a device in the terminal device (eg, a chip, or a chip system, or a circuit), or a device that can be used in conjunction with the terminal device. In one design, the communication device may include modules corresponding to one-to-one execution of the methods/operations/steps/actions described in the first aspect, and the modules may be hardware circuits, software, or hardware circuits combined with software. accomplish. In one design, the communication device may include a processing module and a communication module. The processing module is used to call the communication module to perform the function of receiving and/or sending. Further, the communication module may also include a receiving module and a sending module. Exemplarily: a receiving module, configured to receive a first resource configuration and a second resource configuration from a network device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is used to configure Configure a second uplink resource for subsequent uplink data transmission, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the uplink data except the first part The remaining part; a sending module, configured to transmit the uplink data to the network device based on the first resource configuration and the second resource configuration when in the RRC idle state or the RRC_inactive INACTIVE state .

In a possible design, when transmitting the uplink data to the network device based on the first resource configuration and the second resource configuration, the sending module is specifically configured to: when the data volume of the uplink data is When the amount of data that can be transmitted at one time by the first uplink resource is less than or equal to, transmit the uplink data to the network device based on the first uplink resource; or, when the data amount of the uplink data is greater than the first uplink resource. When the amount of data that one uplink resource can transmit at one time, transmit the first part of the uplink data to the network device based on the first uplink resource, and transmit the uplink data to the network device based on the second uplink resource. the remainder of the data other than the first portion.

In a possible design, the amount of data of the first part is the amount of data that can be transmitted at one time by the first uplink resource.

In a possible design, the first resource configuration includes a first period, the second resource configuration includes a second period; the start position of the second uplink resource and the end position of the first uplink resource are between The interval is the length of the second cycle; or the second resource configuration includes a first offset value, and the first offset value is, within a first cycle, the start of the second uplink resource an offset value between the position and the end position of the first uplink resource; or the second resource configuration includes a second offset value, and the second offset value is, within a first period, the The offset value between the start position of the second uplink resource and the time when the response message is received, where the response message is used to respond to the uplink data transmitted on the first uplink resource.

In a possible design, the first resource configuration includes a first period; the second resource configuration includes a third offset value and a time interval; wherein the third offset value is, in a first period , the offset value between the start position of the second uplink resource and the end position of the first uplink resource; the time interval is the time interval between two adjacent transmission resources in the second uplink resource .

In a possible design, when receiving the first resource configuration and the second resource configuration from the network device, the receiving module is specifically configured to: receive first system information from the network device, where the first system information includes the first resource configuration and the second resource configuration; or, receiving a first RRC release message from a network device, where the first RRC release message includes the first resource configuration and the second resource configuration.

In a possible design, when receiving the first resource configuration and the second resource configuration from the network device, the receiving module is specifically configured to: receive second system information from the network device, where the second system information includes the first resource configuration; and receiving a second RRC release message from a network device, where the second RRC release message includes the second resource configuration.

In a possible design, the sending module is further configured to: send the first part of the uplink data to the network device on the first uplink resource; the receiving module is further configured to: receive data from the network The first message of the device; the first message is used to respond to the first part of the uplink data, the first message is used to activate the second resource configuration, or the first message is used to reconfigure the second resource configuration, or the first message is used to update the second resource configuration.

In a possible design, the first uplink resource is a random access resource, and the first message is a message Msg4 in a four-step random access process or a message MsgB in a two-step random access process; or, all The first uplink resource is an unlicensed GF resource, and the first message is a response message of the first part of the uplink data.

In a possible design, the second resource configuration is carried in any one of the following messages: Msg4 in the four-step random access procedure, MsgB or GFR message in the two-step random access procedure.

In a possible design, the second resource configuration includes at least one of the following types of parameters: period of time-domain resources, parameters related to open-loop power control, waveform, redundancy version sequence, number of repetitions, frequency hopping mode, resource Allocation type, HARQ process number of HARQ, demodulation reference signal DMRS related parameters, modulation and coding scheme MCS table, resource block RBG group size, time domain resource, frequency domain resource or MCS.

In a possible design, the sending module is further configured to: send first information to the network device, where the first information is used to indicate a mode supported or expected by the terminal device for subsequent uplink data transmission.

The receiving module and the sending module may also be used to perform other operations performed by the terminal device, and reference may be made to the description of the first aspect. For the beneficial effects of the third aspect, reference may also be made to the description of the first aspect.

In a fourth aspect, a communication apparatus is provided. The communication apparatus may be a network device, a device in a network device (eg, a chip, or a chip system, or a circuit), or a device that can be used in conjunction with the network device. In one design, the communication device may include modules corresponding to one-to-one execution of the methods/operations/steps/actions described in the first aspect, and the modules may be hardware circuits, software, or hardware circuits combined with software. accomplish. In one design, the communication device may include a processing module and a communication module. The processing module is used to call the communication module to perform the function of receiving and/or sending. Further, the communication module may also include a receiving module and a sending module. Exemplarily: a sending module configured to send a first resource configuration and a second resource configuration to the terminal device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is used to configure The second uplink resource used for subsequent uplink data transmission, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the uplink data except the first part. The remaining part; a receiving module, configured to receive the uplink data from the terminal device based on the first resource configuration and the second resource configuration.

In a possible design, the amount of data of the first part is the amount of data that can be transmitted at one time by the first uplink resource.

In a possible design, the first resource configuration includes a first period; the second resource configuration includes a second period;

The interval between the start position of the second uplink resource and the end position of the first uplink resource is the length of the second period; or the second resource configuration includes a first offset value, the first The offset value is, within a first period, the offset value between the start position of the second uplink resource and the end position of the first uplink resource; or the second resource configuration includes a second offset value. Offset value, the second offset value is, in a first cycle, the offset value between the start position of the second uplink resource and the receiving moment of the response message, the response message is used to respond to the Uplink data transmitted on the first uplink resource.

In a possible design, the first resource configuration includes a first period; the second resource configuration includes a third offset value and a time interval; wherein the third offset value is, in a first period , the offset value between the start position of the second uplink resource and the end position of the first uplink resource; the time interval is the time interval between two adjacent transmission resources in the second uplink resource .

In a possible design, when sending the first resource configuration and the second resource configuration to a terminal device, the sending module is specifically configured to: send first system information to the terminal device, where the first system information includes the first resource configuration and the second resource configuration; or, sending a first RRC release message to the terminal device, where the first RRC release message includes the first resource configuration and the second resource configuration .

In a possible design, when sending the first resource configuration and the second resource configuration to the terminal device, the sending module is specifically configured to: send second system information to the terminal device, where the second system information includes the first resource configuration; sending a second RRC release message to the terminal device, where the second RRC release message includes the second resource configuration.

In a possible design, the receiving module is further configured to: receive the first part of the uplink data from the terminal device on the first uplink resource, and send a first message to the terminal device, the The first message is used to respond to the first part of the uplink data, and the first message is used to activate the second resource configuration, or the first message is used to reconfigure the second resource configuration, or the first message Used to update the second resource configuration.

In a possible design, the first uplink resource is a random access resource, and the first message is a message Msg4 in a four-step random access process or a message MsgB in a two-step random access process; or, all The first uplink resource is an unlicensed GF resource, and the first message is a response message of the first part of the uplink data.

In a possible design, the second resource configuration is carried in any one of the following messages: Msg4 in the four-step random access procedure, MsgB or GFR message in the two-step random access procedure.

In a possible design, the second resource configuration includes at least one of the following types of parameters: period of time-domain resources, parameters related to open-loop power control, waveform, redundancy version sequence, number of repetitions, frequency hopping mode, resource Allocation type, HARQ process number of HARQ, demodulation reference signal DMRS related parameters, modulation and coding scheme MCS table, resource block RBG group size, time domain resource, frequency domain resource or MCS.

In a possible design, the receiving module is further configured to: receive first information from the terminal device, where the first information is used to indicate a mode supported or expected by the terminal device for subsequent uplink data transmission .

The receiving module and the sending module may also be used to perform other operations performed by the network device, and reference may be made to the description of the second aspect. For the beneficial effects of the fourth aspect, reference may also be made to the description of the second aspect.

In a fifth aspect, a communication device is provided, the communication device includes a communication interface and a processor, and the communication interface is used for the communication device to communicate with other devices, such as data or signal transmission and reception. Illustratively, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. The processor is configured to invoke a set of programs, instructions or data to execute the method described in the first aspect. The communication apparatus may also include a memory for storing programs, instructions or data invoked by the processor. The memory is coupled to the processor, and when the processor executes the instructions or data stored in the memory, the method described in the first aspect can be implemented.

In a sixth aspect, a communication device is provided, the communication device includes a communication interface and a processor, and the communication interface is used for the communication device to communicate with other devices, such as data or signal transmission and reception. Illustratively, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. The processor is configured to invoke a set of programs, instructions or data to execute the method described in the second aspect above. The communication apparatus may also include a memory for storing programs, instructions or data invoked by the processor. The memory is coupled to the processor, and when the processor executes the instructions or data stored in the memory, the method described in the second aspect above can be implemented.

In a seventh aspect, the embodiments of the present application further provide a computer-readable storage medium, where computer-readable instructions are stored in the computer-readable storage medium, and when the computer-readable instructions are run on a computer, the The method described in one aspect is performed.

In the eighth aspect, the embodiments of the present application further provide a computer-readable storage medium, where computer-readable instructions are stored in the computer-readable storage medium, and when the computer-readable instructions are executed on a computer, the computer-readable instructions can be The method described in the second aspect is performed.

In a ninth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory, for implementing the method described in the first aspect above. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a tenth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor and may further include a memory, for implementing the method described in the second aspect above. The chip system can be composed of chips, and can also include chips and other discrete devices.

In an eleventh aspect, an embodiment of the present application provides a communication system, where the communication system includes a terminal device and a network device, where the terminal device is configured to execute the method described in the first aspect, and the network device is configured to execute the method described in the second aspect. the method described.

A twelfth aspect provides a computer program product comprising instructions which, when run on a computer, cause the method as described in the first aspect above to be performed.

A thirteenth aspect provides a computer program product comprising instructions which, when run on a computer, cause the method of the second aspect above to be performed.

Description of drawings

1 is a schematic diagram of a communication system architecture in an embodiment of the application;

2a is a schematic diagram of a user plane protocol stack in an embodiment of the application;

FIG. 2b is a schematic diagram of a control plane protocol stack in an embodiment of the present application;

3 is a schematic diagram of state transition in an embodiment of the present application;

4 is a schematic diagram of a process of early data transmission in four-step RA in an embodiment of the present application;

5 is a schematic diagram of a process of early data transmission in two-step RA in an embodiment of the present application;

6 is one of the schematic flowcharts of the data transmission method in the embodiment of the present application;

FIG. 7a is a schematic diagram of a possible association form of the first uplink resource and the second uplink resource in the embodiment of the present application;

FIG. 7b is one of the schematic diagrams of possible association forms of the first uplink resource and the second uplink resource in the embodiment of the present application;

FIG. 7c is one of the schematic diagrams of possible association forms of the first uplink resource and the second uplink resource in the embodiment of the present application;

FIG. 7d is one of the schematic diagrams of possible association forms of the first uplink resource and the second uplink resource in the embodiment of the present application;

FIG. 8 is the second schematic flowchart of the data transmission method in the embodiment of the present application;

FIG. 9 is the third schematic flowchart of the data transmission method in the embodiment of the application;

FIG. 10 is one of the schematic structural diagrams of the communication device in the embodiment of the application;

FIG. 11 is the second schematic diagram of the structure of the communication device according to the embodiment of the present application.

detailed description

Embodiments of the present application provide a data transmission method and apparatus. Among them, the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated. In the description of the embodiments of the present application, "and/or" describes the association relationship of the associated objects, indicating that there may be three kinds of relationships, for example, A and/or B may indicate that A exists alone, A and B exist simultaneously, and a single relationship exists. There are three cases of B. The character "/" generally indicates that the associated objects are an "or" relationship. In this application, at least one refers to one or more; multiple refers to two or more. In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing the description, and should not be understood as indicating or implying relative importance, nor should it be understood as indicating or implied order.

The data transmission method provided by the embodiments of the present application may be applied to a fourth generation (4th generation, 4G) communication system, such as a long term evolution (long term evolution, LTE) communication system, and may also be applied to a fifth generation (5th generation, 5G) communication system A communication system, such as a 5G new radio (NR) communication system, or applied to various communication systems in the future, such as a 6th generation (6G) communication system. The methods provided in the embodiments of the present application may also be applied to a Bluetooth system, a WiFi system, a LoRa system, or a car networking system. The methods provided in the embodiments of the present application may also be applied to a satellite communication system, where the satellite communication system may be integrated with the above-mentioned communication system.

To facilitate understanding of the embodiments of the present application, an application scenario used in the present application is described by taking the communication system architecture shown in FIG. 1 as an example. Referring to FIG. 1 , the communication system 100 includes a network device 101 and a terminal device 102 . The apparatuses provided in the embodiments of the present application may be applied to the network device 101 or applied to the terminal device 102 . It can be understood that FIG. 1 only shows a possible communication system architecture to which the embodiments of the present application can be applied, and in other possible scenarios, the communication system architecture may also include other devices.

The network device 110 is a node in a radio access network (radio access network, RAN), which may also be referred to as a base station, and may also be referred to as a RAN node (or device). At present, some examples of access network devices 101 are: gNB/NR-NB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (for example, home evolved NodeB, or home Node B, HNB) , base band unit (BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), satellite equipment, or network equipment in 5G communication systems, or possible future communication systems network equipment. The network device 110 may also be other devices with network device functions. For example, the network device 110 may also be a device that functions as a network device in device-to-device (device to device, D2D) communication, vehicle networking communication, and machine communication. The network device 110 may also be a network device in a possible future communication system.

In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include a radio unit (RU). CU implements some functions of gNB, DU implements some functions of gNB, for example, CU implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions, DU implements wireless chain The functions of the road control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layers. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, therefore, under this architecture, higher-layer signaling, such as RRC layer signaling or PHCP layer signaling, can also It is considered to be sent by DU, or, sent by DU+RU. It can be understood that the network device may be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network equipment in the access network RAN, and the CU may also be divided into network equipment in the core network CN, which is not limited herein.

The terminal device 102, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device that provides voice or data connectivity to users , or IoT devices. For example, the terminal device includes a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, terminal devices can be: mobile phones, tablet computers, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices (such as smart watches, smart bracelets, pedometers, etc.), in-vehicle devices ( For example, automobiles, bicycles, electric vehicles, airplanes, ships, trains, high-speed rails, etc.), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, smart home devices ( For example, refrigerators, TVs, air conditioners, electricity meters, etc.), intelligent robots, workshop equipment, wireless terminals in unmanned driving, wireless terminals in remote surgery, wireless terminals in smart grid, wireless terminals in transportation safety , wireless terminals in smart cities, or wireless terminals in smart homes, flying equipment (eg, smart robots, hot air balloons, drones, airplanes), etc. The terminal device may also be other devices with a terminal function, for example, the terminal device may also be a device serving as a terminal function in D2D communication. In this application, a terminal device with a wireless transceiver function and a chip that can be installed in the aforementioned terminal device are collectively referred to as a terminal device.

The data transmission method provided by the embodiment of the present application will be described in detail below with reference to the communication system shown in FIG. 1 .

In order to better understand the solutions provided by the embodiments of the present application, some terms, concepts or processes involved in the embodiments of the present application are first introduced below.

First, the state of the terminal device is introduced.

As shown in Figure 2a, the user plane protocol stack for communication between the terminal device and the network device includes a service data adaptation (SDAP) layer, a packet data convergence protocol (PDCP) layer, radio link control (radio link control, RLC) layer, medium access control (medium access control, MAC) layer and physical (physical, PHY) layer.

As shown in Figure 2b, the control plane protocol stack for communication between terminal equipment and network equipment includes a non-access stratum (NAS) layer, a radio resource control (RRC) layer, and a PDCP layer. , RLC layer, MAC layer and PHY layer.

For the RRC layer, there are several RRC states of the terminal equipment, which are RRC idle (RRC_IDLE) state, RRC inactive (RRC_INACTIVE) state and RRC connected (RRC_CONNECTED) state respectively. When the terminal device has established the RRC connection, the terminal device is in the RRC_CONNECTED state or the RRC_INACTIVE state. If the terminal device does not establish an RRC connection, the terminal device is in the RRC_IDLE state. Among them, the RRC_INACTIVE state is a state introduced for terminal equipment in the 5G NR communication system. The RRC_INACTIVE state is mainly aimed at the situation that "terminal equipment with infrequent (infrequent) data transmission is usually kept in the RRC_INACTIVE state by the network".

When the terminal device is in different RRC states, different operations will be performed. The flow of transition between these three states is shown in FIG. 3 . The terminal device starts to be in the RRC_IDLE state. When the terminal device needs to perform data transmission, the terminal device will perform a random access procedure to establish (setup) an RRC connection with the network device, and enter the RRC_CONNECTED state. The terminal device starts data transmission after entering the RRC_CONNECTED state, where the RRC connection is established by sending a connection establishment request message, such as RRCSetupRequest, to the network device during the process of initiating random access by the terminal device, and receiving the connection establishment message sent by the network device, For example RRCSetup.

When the terminal device does not need to perform data transmission subsequently, the network device may release the terminal device to make it transfer to the RRC_IDLE state or the RRC_INACTIVE state. For example, the network device sends a release message with a suspend indication, such as RRCRelease with suspend indication, so that the terminal device enters the RRC_INACTIVE state. Or the network device sends a release message, such as RRCRelease, to make the terminal device enter the RRC_IDLE state.

In addition, the terminal device in the RRC_INACTIVE state can also return to the RRC_CONNECTED state through a resume (resume) message, for example, the terminal device sends an RRC resume request (RRCResumeRequest) and receives an RRC resume (RRCResume), returning to the RRC_CONNECTED state. Likewise, the network device can also release the terminal device to transfer it to the RRC_IDLE state.

For a brief description, the RRC_IDLE state can also be briefly described as the idle state or the IDLE state; the RRC_INACTIVE state can also be briefly described as the inactive state or the INACTIVE state; the RRC_CONNECTED state can also be briefly described as the connected state or the active state or the CONNECTED state.

In conclusion, several RRC states (which may also be simply referred to as states) of the terminal device have been introduced. This embodiment of the present application can implement early data transmission (early data transmission, EDT) for a terminal device in an RRC idle state or an RRC inactive state.

The following introduces the concept and process of early data transmission.

Early data transmission can be considered that a terminal device in an RRC idle state or an RRC inactive state can transmit data without changing the state to enter the RRC connected state. The data transmitted in the early data transmission may include user plane data, and the user plane data in this embodiment of the present application is simply referred to as data. Early data transmission may include early transmission of uplink data and early transmission of downlink data. The user plane data transmitted during the early transmission of uplink data may be referred to as uplink data. The user plane data transmitted during the early transmission of downlink data may be called downlink data. The data transmitted in the traditional data early transmission process can have any one or more of the following characteristics: 1. The amount of data is less than the set threshold; 2. It can be transmitted through a network protocol IP packet; 3. It can be transmitted through a transmission block , TB) transmission.

The data transmitted in the process of early data transmission can be called small data or small data, and the process of early data transmission can also be called small packet transmission.

Early data transmission can be implemented in the following ways 1 or 2.

Mode 1: Implement early data transmission in the random access (RA) process. The RA-based small packet transmission means that the terminal device sends uplink data to the network device or receives downlink data during the RA process. RA can include two-step RA and four-step RA.

As shown in Figure 4, the process of data early transmission in four-step RA is exemplified.

S401, the terminal device sends a message 1 (Msg1) to the network device, and the network device receives a message 1 (Msg1) from the terminal device, where the message 1 is a random access preamble (random access preamble).

S402, the network device sends a message 2 (Msg2) to the terminal device, and the terminal device receives the message 2 from the network device.

Wherein, the message 2 is a random access response (random access response).

S403, the terminal device sends a message 3 (Msg3) to the network device, and the network device receives the message 3 (Msg3) from the terminal device.

Uplink data can be carried in Msg3.

S404, the network device sends a message 4 (Msg4) to the terminal device, and the terminal device receives the message 4 from the network device.

Optionally, downlink data is carried in Msg4.

As shown in Figure 5, the process of data early transmission in two-step RA is exemplified.

S501. The terminal device sends a message A (MsgA) to the network device, and the network device receives the message A from the terminal device.

Uplink data can be carried in MsgA.

The transmission channel of MsgA may include a physical random access channel (PRACH) and a physical uplink shared channel (PUSCH). PRACH is used to send the random access preamble Preamble, and the Preamble is used by the network device to estimate the timing advance (Timing Advance) of the terminal device, so that the terminal device can achieve uplink synchronization with the network device.

The early transmitted uplink data can be sent through the PUSCH of the MsgA.

S502 , the network device returns a message B (MsgB) to the terminal, and the terminal device receives the message B from the network device.

Downlink data can be carried in MsgB. The early transmitted downlink data can be transmitted on the physical downlink shared channel PDSCH of the MsgB.

Method 2: Early data transmission based on grant-free (GF). The process of GF-based data early transmission is as follows.

The network device pre-configures PUSCH resources and transmission parameters for the terminal device for uplink data transmission in a semi-static manner. When the terminal device has uplink data to send, it directly uses the pre-configured PUSCH resources and parameters to send data to the network device. It is not necessary to receive a dynamic UL grant from the network device, nor to send a Preamble for random access.

Pre-configured uplink resource (PUR) transmission in LTE and configured grant (CG) transmission in NR belong to the category of uplink grant-free transmission. Among them, CG includes the first type (Type 1) CG and the second type (Type 2) CG. Transmission based on PUR is similar to transmission based on Type 1CG. The network device configures resources and transmission parameters for the terminal device through RRC signaling, for example, configure one or more of the following parameters: period of time domain resources, parameters related to open-loop power control, Waveform, redundancy version sequence, repetition times, frequency hopping mode, resource allocation type, hybrid automatic retransmission request (HARQ) process number, demodulation reference signal (demodulation reference Signal, DMRS) related parameters, modulation coding Modulation and coding scheme (MCS) table, resource block group (RBG) group size, time domain resources, frequency domain resources, MCS, etc.

In the transmission based on Type 2CG, the network device adopts a two-step resource configuration method. First, the network device sends the configured authorization configuration information through RRC signaling, and the configuration information is used to configure one or more of the following transmission resources and transmission parameters : Period of time domain resources, related parameters of open-loop power control, waveform, redundancy version sequence, number of repetitions, frequency hopping mode, resource allocation type, number of HARQ processes, related parameters of reference signal for demodulation, MCS table, RBG group size . Then, the PUSCH transmission of Type2CG is activated by the downlink control information (DCI) scrambled with the configured scheduling radio network temporary identifier (CS-RNTI), and at the same time, the configuration including time domain resources, Other transmission resources and transmission parameters including frequency domain resources, DMRS, MCS, etc.

Based on the license-free small packet transmission, the terminal device does not need to send the preamble, so it is more suitable for the scenario where the terminal device and the network device are in a synchronized state. Compared with the RA-based solution, it can further save signaling overhead and terminal device power consumption.

The above describes the concept and process of early data transmission. It can be seen that the traditional data early transmission process has certain requirements or restrictions on the transmitted data. For example, the amount of data needs to be less than a certain threshold, and for example, data is transmitted through one IP packet or one TB, and for example, the data to be transmitted can be transmitted at one time. However, in some scenarios, the data transmitted early may not meet these requirements, or the above restrictions have an impact on the effect or performance of early data transmission.

Based on the above description, the embodiments of the present application provide a data transmission method, so as to optimize the data early transmission process.

As shown in FIG. 6 , the flow of the data transmission method provided by the embodiment of the present application is as follows.

S601. The network device sends the first resource configuration and the second resource configuration to the terminal device. The terminal device receives the first resource configuration and the second resource configuration from the network device.

The first resource configuration and the second resource configuration are used to configure uplink transmission resources and uplink transmission parameters. And the second resource configuration is used to configure resources and/or transmission parameters for subsequent uplink data transmission (subsequent uplink transmission, subsequent UL Tx).

The first resource configuration is used for configuring one or more first uplink resources, the second resource configuration is used for configuring second uplink resources, and the second uplink resources are used for resources for subsequent uplink data transmission.

The first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the remaining part of the uplink data except the first part.

S602. When the terminal device is in the RRC idle state or the RRC inactive state, transmit uplink data to the network device based on the first resource configuration and the second resource configuration, and the network device receives the uplink data from the terminal device based on the first resource configuration and the second resource configuration. upstream data.

In the method of the embodiment in FIG. 6 , uplink data in the process of early data transmission may be divided into initial transmission data and subsequent transmission data. The initial transmission data may be data transmitted by using the first uplink resource, and the subsequent transmission data may be data transmitted by using the second uplink resource. For example, the initial transmission data may be the first part of the uplink data, and the subsequent transmission data may be the remaining part of the uplink data except the first part.

The second resource configuration is used to configure dedicated resources and/or transmission parameters for subsequent uplink data transmission. The second uplink resource is a dedicated uplink resource for subsequent transmission data, and the subsequent transmission data is transmitted on the second uplink resource.

Subsequent uplink data transmission may refer to the terminal equipment in the RRC idle state or the RRC inactive state, which fails to transmit the uplink data to be transmitted at one time during the data early transmission process, and keeps the state unchanged (that is, does not perform state transition to enter. In the case of the connected state), the transmission for the transmission of subsequent transmission data.

Subsequent uplink data transmission may also refer to the terminal equipment in the RRC idle state or the RRC inactive state, which fails to transmit the uplink data to be transmitted at one time in the process of early data transmission, and keeps the state unchanged (that is, does not perform state transition). In the case of entering the connected state), before receiving the RRC release instruction sent by the network device, the transmission is performed for the transmission of subsequent transmission data.

Subsequent uplink data transmission can be applied to the following scenarios.

(1) If the terminal equipment is in the RRC idle state or the RRC inactive state, and the amount of data to be transmitted is relatively large, after an early transmission of uplink data (such as sending uplink data through message 3, message A or CG resources), buffer the data. There is still data to be transmitted in the terminal equipment, the terminal device does not enter the connected state, but maintains the original state (RRC idle state or RRC inactive state) to complete the transmission of subsequent transmission data.

(2) If the terminal device is in the RRC idle state or the RRC inactive state, there is only one data packet in the buffer of the terminal device, but the size of the data packet exceeds the TBS that the terminal device can transmit in one uplink data early transmission, so the terminal device needs to Segmentation is performed on the data packet in the buffer, a part of the data packet is transmitted using the first uplink resource, and subsequent data transmission is transmitted using the second uplink resource.

It can be understood that, if the terminal device performs state transition to enter the connected state to complete the remaining data that has not been transmitted in the early data transmission, it does not belong to the subsequent uplink data transmission. When the terminal device is in the RRC idle state or the RRC inactive state, an early uplink data transmission is performed. There is no remaining data in the buffer to be transmitted, but after a period of time, new data arrives in the buffer, and the transmission of new data does not belong to the subsequent uplink. data transmission.

By configuring dedicated resources for subsequent uplink data transmission for terminal devices, it can be applied to early uplink data transmission in more scenarios, broadening the requirements for uplink data early transmission, and optimizing the performance of uplink data early transmission. In addition, all uplink data transmission can be completed without the terminal equipment performing state transition to enter the connected state, saving signaling overhead caused by state transition, and helping to save energy consumption of the terminal equipment.

In this embodiment of the present application, the uplink data transmitted during the early transmission of uplink data may involve the following services, such as WeChat of a smart device, instant messages of QQ, heartbeat packets or push messages of an application (app). For another example, non-smartphone related services, such as periodic data (such as heartbeat packets) of wearable devices, periodic readings sent by industrial wireless sensor networks, and smart meters.

Based on the embodiment of FIG. 6 , some optional implementation manners are provided below.

After receiving the first resource configuration and the second resource configuration, when the data to be transmitted arrives, the terminal device may select a mode for transmitting uplink data based on the characteristics of the data to be transmitted.

For example, when the data volume of the uplink data is less than or equal to the data volume that can be transmitted by the first uplink resource at one time, the uplink data is transmitted to the network device based on the first uplink resource.

When the amount of uplink data is greater than the amount of data that can be transmitted at one time by the first uplink resource, transmit the first part of the uplink data to the network device based on the first uplink resource, and transmit the first part of the uplink data to the network device based on the second uplink resource. the remainder other than one part. In this case, the amount of data of the first part may be the amount of data that can be transmitted at one time by one first uplink resource. Of course, when the amount of uplink data is greater than the amount of data that can be transmitted by the first uplink resource at one time, the terminal device may also allocate the amount of data transmitted by the first uplink resource and the second uplink resource respectively. The allocation method can be any method, for example, it can be allocated evenly; for another example, it can be allocated based on a sharing algorithm.

Optionally, the uplink data may refer to data for a single logical channel or a single logical channel group. Uplink data may also refer to a single DRB or to a single data radio bearer group.

The second resource configuration may be the resource configuration of the GF. The GF may be PUR-based transmission in LTE, and the second uplink resource may be a PUR-based resource. GF can also be CG-based transmission in NR, and the second uplink resource can be CG-based resource, including Type 1 CG and Type 2 CG.

The second resource configuration includes at least one of the following types of parameters: time-domain resource period, open-loop power control-related parameters, waveform, redundancy version sequence, repetition times, frequency hopping mode, resource allocation type, hybrid automatic repeat request (HARQ) Number of processes, demodulation reference signal DMRS related parameters, modulation and coding scheme MCS table, resource block RBG group size, time domain resources, frequency domain resources, MCS, TBS or power control.

The first resource configuration may be the resource configuration of the RA or the resource configuration of the GF.

The first resource configuration and the second resource configuration may be two sets of resource configurations. For example, the network device configures two sets of resource configurations for the terminal device, one set is used for initial uplink data transmission, and the other set is used for subsequent uplink data transmission. A set of resource configuration here refers to all resources determined according to a configuration parameter set. The configuration parameter set may include time domain resources, frequency domain resources, DMRS, MCS/TBS, waveform, power control, HARQ process, etc. one or more parameters. The first resource configuration and the second resource configuration may also have a common resource configuration. For example, the network device may first configure the first resource configuration for the terminal device, and some of the configuration parameters are also applicable to the second resource configuration. When configuring the second resource configuration, only parameters other than the common configuration parameters may be configured.

The first uplink resource and the second uplink resource may be associated. The terminal device sends initial transmission data on the first uplink resource, and sends subsequent transmission data on the second uplink resource associated with the first uplink resource.

A possible association form of the first uplink resource and the second uplink resource is shown below with reference to the accompanying drawings.

As shown in FIG. 7a, the period of the first uplink resource is the first period, which is represented by P1, and the period of the second uplink resource is the second period, which is represented by P2. In a first period, the interval between the start position of the first second uplink resource and the start position of the first uplink resource is the length of the second period.

As shown in Fig. 7b, the period of the first uplink resource is the first period, which is represented by P1. The period of the second uplink resource is the second period, which is represented by P2. The second resource configuration includes a first offset value (offset), and the first offset value is: an offset value between the start position of the second uplink resource and the end position of the first uplink resource within a first period .

As shown in FIG. 7c, the period of the first uplink resource is the first period, which is represented by P1. The period of the second uplink resource is the second period, which is represented by P2. The second resource configuration includes a second offset value (offset), and the second offset value is: within a first cycle, the offset value between the start position of the second uplink resource and the time when the response message is received, the response The message is used to respond to uplink data transmitted on the first uplink resource.

As shown in FIG. 7d, the period of the first uplink resource is the first period, which is represented by P1. The second resource configuration includes a third offset value and a time interval. The third offset value is: an offset value between the start position of the second uplink resource and the end position of the first uplink resource in a first period. The time interval is the time interval between two adjacent transmission resources in the second uplink resource.

The above-mentioned first period takes a first time unit as a unit, and the first time unit may be any one of the following: a time slot, a symbol, a subframe, and a frame. The second period takes the second time unit as a unit, and the second time unit may be any one of the following: a time slot, a symbol, a subframe, and a frame. The first time unit may be the same as or different from the second time unit. The units of the first offset value, the second offset value, the third offset value or the time interval may be the same as or different from the first time unit, and may also be the same as or different from the second time unit. For example, the first offset value, the second offset value or the third offset value is used to determine the positional relationship between the first second uplink resource and the first uplink resource, and the difference between the first offset value or the second offset value is The reference point may be the time unit where the first uplink resource is located, and the reference point of the third offset value may be the time unit where the response message for the initial data transmission is located. The reference point is the offset to the right from the reference point.

In a first period, one or more second uplink resources may exist.

It can be seen that the interval of the first cycle is relatively large. If the terminal device waits for the first uplink resource to send subsequent transmission data after sending the initial transmission data to the network device, the delay will increase. By configuring the second uplink resource, the terminal device can send subsequent transmission data on the second uplink resource, thereby improving the efficiency of the subsequent uplink transmission and reducing the delay.

The following introduces optional configuration methods for the first resource configuration and the second resource configuration in S601.

In a possible manner a, before the data early transmission process, the network device configures the first resource configuration and the second resource configuration for the terminal device.

For example, the network device sends system information (system information, SI) or system information block (system information block, SIB) to the terminal device, and the following takes the system information as an example for introduction. The system information here may be recorded as the first system information, and the first system information carries the first resource configuration and the second resource configuration. The terminal device receives the first system information from the network device, and acquires the first resource configuration and the second resource configuration. Here, the first uplink resource in the first resource configuration may be an RA resource or a GF resource. The second uplink resources in the second resource configuration may be GF resources.

For another example, the network device sends an RRC release (RRC release) message to the terminal device, which is recorded as the first RRC release message, and the first RRC release message carries the first resource configuration and the second resource configuration. The terminal device receives the first RRC release message from the network device, and acquires the first resource configuration and the second resource configuration. Here, the first uplink resource in the first resource configuration may be an RA resource or a GF resource. The second uplink resources in the second resource configuration may be GF resources.

For another example, the network device sends system information to the terminal device, which is recorded as the second system information, and the first system information carries the first resource configuration. The terminal device receives the second system information from the network device, and obtains the first resource configuration. The network device sends an RRC release (RRC release) message to the terminal device, which is recorded as the second RRC release message. The second resource configuration is carried in the second RRC release message. The terminal device receives the second RRC release message from the network device, and acquires the second resource configuration. Here, the first uplink resources in the first resource configuration may be RA resources, and the second uplink resources in the second resource configuration may be GF resources.

In the above example, when the terminal device receives the system information, it may be in the RRC idle state or the RRC inactive state. When the terminal device receives the RRC release message, it may be in the process of transitioning from the RRC connected state to the RRC idle state or the RRC inactive state.

In a possible manner b, before the data early transmission process, the network device configures the first resource configuration for the terminal device. After the terminal device sends the initial transmission data to the network device on the first uplink resource, the network device configures the second resource configuration for the terminal device.

For example, the first uplink resource is an RA resource. After the terminal device carries initial transmission data in message 3 or message A, the network device sends message 4 or message B to the terminal device, and message 4 or message B carries the second resource configuration. The terminal device receives message 4 or message B from the network device, and acquires the second resource configuration.

For another example, the first uplink resource is a GF resource, and after the terminal device carries the initial transmission data in the GF resource, the network device sends a response message for the initial transmission data to the terminal device, such as a grant-free response (GFR) message, the second resource configuration is carried in the response message of the initial data transmission. The terminal device receives the response message of the initial transmission data from the network device, and acquires the second resource configuration. Optionally, the response message may further instruct the terminal device to continue to maintain the original state, the RRC idle state or the RRC inactive state.

In a possible manner c, the network device configures the first resource configuration and the second resource configuration for the terminal device through the method a, and the terminal device obtains the first resource configuration and the second resource configuration through the method a before the data early transmission process . The terminal device sends initial transmission data to the network device on the first uplink resource, and after receiving the initial transmission data, the network device sends a first message to the terminal device. The first message is used to activate the second resource configuration, or the first message is used for to reconfigure the second resource configuration, or the first message is used to update the second resource configuration.

The network device configures the second resource configuration for the terminal device through the method a, but the second resource configuration is not activated. After receiving the initial transmission data, the network device activates the second resource configuration by sending a first message to the terminal device. After the first message, it is determined to activate the second resource configuration. For example, when the first uplink resource sends initial transmission data, the terminal device may send auxiliary information to the network device, and the auxiliary information may be used to indicate that there is still remaining buffered data to be transmitted. The network device activates the second resource configuration according to the auxiliary information. In this way, if the terminal device finishes sending the uplink data to be transmitted on the first uplink resource, the network device will not activate the second resource configuration, and can use the second uplink resource for other purposes to improve resource utilization.

The network device configures the second resource configuration for the terminal device through the method a, and after receiving the initial transmission data, by sending a first message to the terminal device to reconfigure or update the second resource configuration, the parameters of the second resource configuration can be optimized, so that the first The second resource configuration is more suitable for subsequent uplink data transmission. Alternatively, a more suitable second resource configuration can be adapted according to the auxiliary information sent by the terminal device, so as to improve the resource utilization rate.

If the first uplink resource that the terminal device sends the initial transmission data is the RA resource, and the terminal device sends the initial transmission data in message 3, the first message may be carried in message 4 (Msg4) in the four-step random access procedure. If the first uplink resource that the terminal device sends the initial transmission data is the RA resource, and the terminal device sends the initial transmission data in message A, the first message may be carried in message B (MsgB) in the two-step random access process.

If the first uplink resource to which the terminal device sends the initial transmission data is a grant-free (GF) resource, the first message may be carried in a response message of the initial transmission data, such as a GFR message. The terminal device sends initial transmission data on the GF resource, and after receiving the initial transmission data, the network device sends a response message to the terminal device, and activates, reconfigures or updates the second resource configuration in the response message.

If the network device in S601 configures the first resource configuration and the second resource configuration in the possible way a or the way b, then in S602, after the terminal device uses the first uplink resource to send the initial transmission data, it can use the second uplink resource to send the subsequent transmission data. .

If S601 the network device configures the first resource configuration and the second resource configuration in the possible way c, then in S602, the terminal device sends initial transmission data based on the first resource configuration, and after receiving the first message from the network device, activates, The second resource configuration is reconfigured or updated, and subsequent transmission data is sent based on the activation, reconfiguration or update of the second resource configuration.

In conclusion, the data transmission method provided by the embodiments of the present application can optimize the data early transmission process.

Based on the same technical concept, the embodiments of the present application also provide a data transmission method. The specific process is shown in Figure 8.

S801. The terminal device sends first information to the network device, and the network device receives the first information from the terminal device.

The first information is used to indicate whether the terminal device supports or prefers subsequent uplink data transmission, or the first information is used to indicate a method supported by the terminal device for subsequent uplink data transmission, or the first information is used to Indicates the method expected by the terminal equipment for subsequent uplink data transmission.

S802, the terminal device transmits uplink data to the network device, and the network device receives the uplink data from the terminal device.

The embodiment in FIG. 8 may be combined with the embodiment in FIG. 6, for example, S801 is performed before S601. S802 corresponds to S602.

The embodiment of FIG. 8 can also independently form the solution to be protected in the embodiment of the present application.

When the embodiment of FIG. 8 is combined with the embodiment of FIG. 6 , the first information is used to indicate the mode supported or expected by the terminal device for subsequent uplink data transmission, and the network device determines the supported or expected mode of the terminal device according to the first information The second resource configuration corresponding to the mode used for subsequent uplink data transmission.

Based on the embodiment of FIG. 8 , some optional implementation manners are provided below.

Optionally, the first information may also be used to indicate that the terminal device does not support subsequent uplink data transmission; the first information may also be used to indicate a manner that the terminal device does not expect for subsequent uplink data transmission.

If the first information can also be used to indicate that the terminal device does not support subsequent uplink data transmission, it means that the terminal device does not support subsequent uplink data transmission without transitioning to the connected state, and the terminal device can only be in the RRC idle state or the RRC non-connected state. The active state is converted to the RRC connected state, and subsequent uplink data is transmitted in the RRC connected state. Subsequent uplink data is the data remaining in the buffer after the initial transmission data is sent.

The methods supported or expected by the terminal equipment for subsequent uplink data transmission may include subsequent uplink data transmission based on RA, subsequent uplink data transmission based on GF, or subsequent uplink data transmission based on dynamic authorization of network equipment. Data transmission can also be in other possible ways. The manner in which the network device is dynamically authorized means that the network device sends an uplink authorization to the terminal device, and the terminal device sends uplink data to the network device according to the uplink authorization. The uplink grant may be carried in downlink control information (downlink control information, DCI), or may be carried in a medium access control element (medium access control element, MAC CE).

The first information may be capability information of the terminal device. The capability information may be carried in an RRC message, such as the RRC message UECapabilityInformation in the NR system.

The first information may also be configuration request information, where the configuration request information is used to indicate the mode that the terminal device expects for subsequent uplink data transmission, or the configuration request information is used to indicate the mode that the terminal device does not expect for subsequent uplink data transmission. Way. The configuration request information can be carried in the RRC message.

In this embodiment of the present application, the terminal device may also report second information to the network device, where the second information is used to indicate whether the terminal device supports or expects retransmission based on dynamic authorization. The second information may also be carried in capability information of the terminal device, where the second information is used to indicate whether the terminal device supports retransmission based on dynamic authorization. The second information may also be carried in the configuration request information, where the second information is used to indicate whether the terminal device expects retransmission based on dynamic authorization. Retransmission based on dynamic authorization means that the terminal device sends data to the network device when it is in the RRC idle state or the RRC inactive state. The network device detects the data sent by the terminal device. The data can be sent to the network device based on RA or GF sent by the network device. When the network device does not receive the data correctly, the network device may send a dynamic grant to the terminal device through a physical downlink control channel (PDCCH) to schedule the terminal device to retransmit the data. With reference to the embodiment of FIG. 6 , when the terminal device supports retransmission based on dynamic authorization, the terminal device may send initial transmission data on the first uplink resource and wait for a response message from the network device. When the network device correctly receives the initial transmission data, it returns a first response message to the terminal device, which is used to indicate that the initial transmission data is correctly received. The terminal device continues to send subsequent transmission data on the second uplink resource according to the first response message. If the network device does not correctly receive the initial transmission data, the network device PDCCH sends a dynamic grant to the terminal device for scheduling the terminal device to retransmit the initial transmission data. When the terminal device retransmits the retransmitted data of the initial transmission data, it may transmit the retransmitted data based on the next first uplink resource, or transmit the retransmitted data on the second uplink resource after receiving the dynamic grant. When retransmission data is transmitted on the second uplink resource, the retransmission data may also be regarded as a kind of subsequent transmission data.

After receiving the second information, the network device may also send the first indication information to the terminal device. The first indication information is used to indicate whether the terminal device needs to monitor the dynamic authorization for scheduling retransmission. The first indication information and the second resource may be configured in the same message or the same signaling, or may be configured in different signaling or messages.

The terminal device may report the second information alone without reporting the first information, or report the first information alone without reporting the second information, or the terminal device may report the first information and the second information.

In this embodiment of the present application, the terminal device may also report third information to the network device, where the third information is used to indicate whether the terminal device supports or expects to monitor physical layer HARQ feedback information. The third information may also be carried in the capability information of the terminal device, and the third information is used to indicate whether the terminal device supports monitoring the physical layer HARQ feedback information. The third information may also be carried in the configuration request information, where the third information is used to indicate whether the terminal device expects to monitor the physical layer HARQ feedback information. The third information may also be carried in the capability information of the terminal device. The physical layer HARQ feedback information is physical layer HARQ feedback sent by the network device for uplink transmission of the terminal device, such as a correct acknowledgement command (acknowledge, ACK) or a negative acknowledgement (negative acknowledgement, NACK). The physical layer HARQ feedback may include two ways. One is that the feedback information is carried in the DCI, and the terminal device determines the HARQ feedback information by decoding the DCI. The other is in the form of a sequence. The terminal device determines the HARQ feedback information by detecting the sequence sent by the network device. For example sequence 1 represents ACK, sequence 2 or sequence 1 not detected represents NACK. With reference to the embodiment of FIG. 6 , when the terminal device supports monitoring physical layer HARQ feedback information, the terminal device may send initial transmission data on the first uplink resource and wait for the physical layer HARQ feedback information of the network device. When the network device correctly receives the initial transmission data, it returns an ACK to the terminal device to indicate that the initial transmission data is correctly received. The terminal device continues to send subsequent transmission data on the second uplink resource according to the ACK. If the network device does not correctly receive the initial transmission data, the network device returns NACK to the terminal device. When the terminal device retransmits the retransmitted data of the initial transmission data, it may transmit the retransmitted data based on the next first uplink resource, or transmit the retransmitted data on the second uplink resource after receiving the HARQ feedback. When retransmission data is transmitted on the second uplink resource, the retransmission data may also be regarded as a kind of subsequent transmission data.

After receiving the third information, the network device may also send the second indication information to the terminal device. The second indication information is used to indicate whether the terminal device needs to monitor the physical layer HARQ feedback. The second indication information may be configured in the same message or in the same signaling as the second resource, or may be in a different signaling or message.

The terminal device can report the third information alone without reporting the first information or the second information, or it can report the first information alone without reporting the third information, or it can report the second information alone without reporting the third information; or The first information, the second information and the third information can be reported.

After S801 and before S802, the following steps may also be included.

The network device sends the fourth information to the terminal device, and the terminal device receives the fourth information from the network device. The fourth information may be used to indicate any one or more of the following:

Instruct the terminal device whether to perform subsequent uplink transmission; instruct the terminal device to use the method for subsequent uplink data transmission; configure resources for subsequent uplink data transmission.

Wherein, the fourth information indicates whether the terminal device performs subsequent uplink transmission, which may be implemented under the condition that the first information indicates that the terminal device supports subsequent uplink data transmission. That is, when determining that the terminal device supports subsequent uplink data transmission according to the first information, the network device may indicate whether the terminal device performs subsequent uplink transmission through the fourth information. The terminal device may determine whether to perform subsequent uplink transmission according to the instruction of the network device.

The manner in which the terminal equipment indicated by the fourth information is used for subsequent uplink data transmission may be based on a manner supported or expected by the terminal equipment indicated by the first information for subsequent uplink data transmission. For example, the first information indicates that the method supported or expected by the terminal device for subsequent uplink data transmission includes: a GF-based method for subsequent uplink data transmission, or a method based on dynamic authorization by the network device. The network device instructs the terminal device to use the fourth information to perform subsequent uplink data transmission in a GF-based manner.

The fourth information configures the resources used for subsequent uplink data transmission. When the fourth information is also used to indicate the mode used by the terminal equipment for subsequent uplink data transmission, the fourth information configures the resources used for subsequent uplink data transmission to be used by the terminal equipment. Resources corresponding to the mode of subsequent uplink data transmission. For example, the fourth information indicates that the method used by the terminal device for subsequent uplink data transmission is to perform subsequent uplink data transmission in a GF-based manner, then the resources configured by the fourth information for subsequent uplink data transmission are GF resources, which may be PUSCH time-frequency resources , DMRS, MCS, TBS, waveform, and may also be PDCCH time-frequency resources and scrambling ID (such as RNTI) for scheduling PUSCH. For another example, the fourth information indicates that the method used by the terminal equipment for subsequent uplink data transmission is to perform subsequent uplink data transmission based on the RA method, then the resources configured by the fourth information for subsequent uplink data transmission are RA resources, which may be PRACH time-frequency Resource, Preamble, or Waveform. With reference to the embodiment of FIG. 6 , the resource configured by the fourth information for subsequent uplink data transmission may refer to the second uplink resource.

In the embodiment of the present application, a response message is involved, and the response message may be a response message for initial transmission of data, or a response message for uplink data transmitted on the first uplink resource. For example, the response message may be GFR. The response message may be an RRC response message. After the terminal device sends the initial transmission data, the network device returns the RRC response message. The response message can also be the HARQ feedback information of the physical layer. After the terminal device sends the initial transmission data, the network device returns the HARQ feedback information for the physical layer of the initial transmission data. After the subsequent transmission data is sent, the network device returns to the RRC. response message. The response message can also be a MAC layer message. After the terminal device sends the initial transmission data, the network device returns the MAC layer response information for the initial transmission data, such as carrying information for adjusting the timing advance (TA), etc.

6 and 8, as shown in FIG. 9, a data transmission method according to an embodiment of the present application in a scenario will be described below.

S901. The terminal device sends first information to the network device, and the network device receives the first information from the terminal device.

This step may correspond to S801.

If the first information indicates that the terminal device does not support subsequent uplink data transmission, the network device may feed back an RRC release (release) message to the terminal device after receiving the initial transmission from the terminal.

S902. The network device sends the first resource configuration and the second resource configuration to the terminal device according to the first information.

This step may correspond to S601.

For example, the second resource configuration may be associated with the first resource configuration. The second resource configuration includes second uplink resources, and the second uplink resources are associated with the first uplink resources. In this way, the network device can select the second uplink resource associated with the first uplink resource to avoid temporary configuration of the network device.

The second uplink resources may be GF resources, such as CG resources. The first uplink resources associated with the second uplink resources may be RA resources, such as PUSCH resources or PRACH resources of MsgA in two-step random access. The first uplink resource associated with the second uplink resource may also be a GF resource, such as a CG resource.

S903. When the terminal device is in the RRC idle state or the RRC inactive state, send initial transmission data to the network device based on the first resource configuration, and the network device receives the initial transmission data from the terminal device based on the first resource configuration.

This step may correspond to the part of S602.

The initial transmission data may carry a buffer state report (BSR), and the BSR is used to indicate that there is still remaining buffer data that has not been transmitted.

S904, the network device sends a response message for the initial transmission data to the terminal device, and the terminal device receives the response message from the network device.

The response message may correspond to the fourth information above. The response message may be used to indicate any one or more of the following: instructing the terminal device whether to perform subsequent uplink transmission; instructing the terminal device to use for subsequent uplink data transmission; and configuring resources for subsequent uplink data transmission.

If the network device decides the terminal device to perform subsequent uplink transmission, the response message may be a layer 1 (L1 physical layer) or layer 2 (L2MAC layer) or layer 3 (L3RRC layer) message in the wireless network protocol stack. If the network device decides that the terminal device does not perform subsequent uplink transmission, the response message is an L3 message.

If the network device instructs the terminal device to perform subsequent uplink transmission in the CG mode, and the CG resource associated with the first uplink resource is configured in S902, optionally, the network device may change the associated CG resources and transport parameters such as response message change MCS.

The CG resource associated with the first uplink resource is configured in the manner of Type 2 CG, and the associated CG resource and transmission parameters are changed through a response message.

If the network device instructs the terminal device to perform subsequent uplink transmission in a CG manner, and the CG resource associated with the first uplink resource is not configured in S902, one method is that the response message may carry configuration information for configuring the subsequent uplink transmission. Another method is to reconfigure CG resources (such as size, period, or quantity) and transmission parameters (such as MCS) through a response message, and the reconfigured CG resources are only used for subsequent uplink transmissions.

S905, the terminal device performs subsequent uplink transmission according to the response message of the network device.

This step may correspond to part of S602.

It should be noted that the examples in each application scenario in this application only represent some possible implementation manners, which are for better understanding and description of the method of this application. Those skilled in the art can obtain some examples of evolution forms according to the sidelink communication method provided in the application.

In order to implement the functions in the methods provided by the above embodiments of the present application, the terminal device and the network device may include hardware structures and/or software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules . Whether one of the above functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

As shown in FIG. 10 , based on the same technical concept, an embodiment of the present application further provides a communication apparatus 1000 . The communication apparatus 1000 may be a terminal device or a network device, or a device in a terminal device or a network device, or a A device that can be used with terminal equipment or network equipment. In one design, the communication apparatus 1000 may include modules that perform one-to-one correspondence with the methods/operations/steps/actions performed by the terminal device or the network device in the above method embodiments, and the module may be a hardware circuit, software, or module. It can be implemented by hardware circuit combined with software. In one design, the communication device 1000 may include a communication module 1001 and a processing module 1002 . Further, the communication module 1001 may further include a receiving module 1001-1 and a sending module 1001-2. The processing module 1002 is configured to call the communication module 1001 to receive and/or send signals.

When the communication apparatus 1000 is used to perform the operation of the terminal device:

A receiving module 1001-1, configured to receive a first resource configuration and a second resource configuration from a network device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is configured to be used for subsequent uplinks The second uplink resource for data transmission, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the remaining part of the uplink data except the first part.

The sending module 1001-2 is configured to transmit uplink data to the network device based on the first resource configuration and the second resource configuration when in the RRC idle state or the RRC_inactive INACTIVE state.

When the communication apparatus 1000 is used to perform the operation of the network device:

A sending module 1001-2, configured to send a first resource configuration and a second resource configuration to a terminal device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is used to configure subsequent uplink data The transmitted second uplink resource, the first uplink resource is used to transmit the whole or the first part of the uplink data, and the second uplink resource is used to transmit the remaining part of the uplink data except the first part.

A receiving module 1001-1, configured to receive uplink data from a terminal device based on the first resource configuration and the second resource configuration.

The receiving module 1001-1, the sending module 1001-2, and the processing module 1002 are further configured to perform other operations performed by the terminal device and the network device in the foregoing method embodiments, which will not be repeated here.

The division of modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be other division methods. In addition, the functional modules in the various embodiments of the present application may be integrated into one processing unit. In the device, it can also exist physically alone, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.

As shown in FIG. 11 , a communication apparatus 1100 provided by an embodiment of the present application is used to implement the functions of a terminal device or a network device in the foregoing method. When implementing the function of the network device, the device may be a network device, a device in a network device, or a device that can be used in conjunction with the network device. When implementing the function of the terminal device, the device may be the terminal device, or may be a device in the terminal device, or a device that can be matched and used with the terminal device. Wherein, the device may be a chip system. In this embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. The communication apparatus 1100 includes at least one processor 1120, which is configured to implement the function of the terminal device or the network device in the method provided by the embodiment of the present application. The apparatus 1100 may also include a communication interface 1110 . In this embodiment of the present application, the communication interface may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces, which are used to communicate with other devices through a transmission medium. For example, the communication interface 1110 is used for the apparatus in the communication apparatus 1100 to communicate with other devices. Exemplarily, when the communication apparatus 1100 is a terminal device, the other device may be a network device. When the communication device 1100 is a network device, the other device may be a terminal device. The processor 1120 uses the communication interface 1110 to send and receive data, and is used to implement the methods described in the above method embodiments.

Exemplarily, when the function of the terminal device is implemented, the processor 1120 is configured to invoke the communication apparatus 1100 to perform the following operations: receive a first resource configuration and a second resource configuration from the network device, where the first resource configuration is used to configure one or more a first uplink resource, the second resource configuration is used to configure the second uplink resource used for subsequent uplink data transmission, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the uplink data except The remainder of the first part. and transmitting uplink data to the network device based on the first resource configuration and the second resource configuration when in the RRC idle state or the RRC_inactive INACTIVE state.

When implementing the function of the network device, the processor 1120 is configured to invoke the communication apparatus 1100 to perform the following operations: send the first resource configuration and the second resource configuration to the terminal device, where the first resource configuration is used to configure one or more first uplink resources , the second resource configuration is used to configure the second uplink resource used for subsequent uplink data transmission, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the uplink data except the first part. The remaining part. and receiving uplink data from the terminal device based on the first resource configuration and the second resource configuration.

The processor 1120 and the communication interface 1110 may also be configured to perform other corresponding steps or operations performed by the terminal device or the network device in the above method embodiments, which will not be repeated here.

Communication apparatus 1100 may also include at least one memory 1130 for storing program instructions and/or data. Memory 1130 and processor 1120 are coupled. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 1120 may cooperate with the memory 1130. The processor 1120 may execute program instructions stored in the memory 1130 . At least one of the at least one memory may be integrated with the processor.

The specific connection medium between the communication interface 1110 , the processor 1120 , and the memory 1130 is not limited in this embodiment of the present application. In the embodiment of the present application, the memory 1130, the processor 1120, and the communication interface 1110 are connected through a bus 1140 in FIG. 11. The bus is represented by a thick line in FIG. 11, and the connection between other components is only for schematic illustration. , is not limited. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 11, but it does not mean that there is only one bus or one type of bus.

When the communication device 1100 and the communication device 1100 are specifically a chip or a chip system, the communication module 1102 and the communication interface 1110 may output or receive baseband signals. When the communication apparatus 1100 and the communication apparatus 1100 are specifically devices, the output or reception of the communication module 1102 and the communication interface 1110 may be radio frequency signals. In this embodiment of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which can implement or The methods, steps and logic block diagrams disclosed in the embodiments of this application are executed. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

In this embodiment of the present application, the memory 1130 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory (volatile memory), Such as random-access memory (random-access memory, RAM). Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory in this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and/or data.

Some or all of the operations and functions performed by the terminal equipment or network equipment described in the above method embodiments of this application, or some or all of the operations and functions performed by the terminal equipment or network equipment, may be performed by chips or integrated circuits. Finish.

In order to realize the function of the communication apparatus described in the foregoing FIG. 10 or FIG. 11 , an embodiment of the present application further provides a chip, including a processor, for supporting the communication apparatus to implement the functions involved in the terminal device or the network device in the foregoing method embodiment. Function. In a possible design, the chip is connected to a memory or the chip includes a memory for storing necessary program instructions and data of the communication device.

An embodiment of the present application provides a computer-readable storage medium storing a computer program, where the computer program includes instructions for executing the foregoing method embodiments.

The embodiments of the present application provide a computer program product containing instructions, which, when executed on a computer, cause the above method embodiments to be executed.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

While the preferred embodiments of the present application have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of this application.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (49)

A data transmission method, characterized in that the method comprises: Receive a first resource configuration and a second resource configuration from the network device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is used to configure the first resource configuration for subsequent uplink data transmission. Two uplink resources, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the remaining part of the uplink data except the first part; When in the RRC idle state or the RRC_inactive INACTIVE state, the uplink data is transmitted to the network device based on the first resource configuration and the second resource configuration. The method according to claim 1, wherein transmitting the uplink data to the network device based on the first resource configuration and the second resource configuration comprises: When the data volume of the uplink data is less than or equal to the data volume that can be transmitted at one time by the first uplink resource, transmit the uplink data to the network device based on the first uplink resource; or, When the data volume of the uplink data is greater than the data volume that can be transmitted at one time by the first uplink resource, transmit the first part of the uplink data to the network device based on the first uplink resource, and transmit the first part of the uplink data to the network device based on the first uplink resource. Two uplink resources transmit the remaining part of the uplink data except the first part to the network device. The method according to claim 1 or 2, wherein the amount of data of the first part is the amount of data that can be transmitted at one time by one of the first uplink resources. The method according to any one of claims 1 to 3, wherein the first resource configuration includes a first period; the second resource configuration includes a second period; The interval between the start position of the second uplink resource and the end position of the first uplink resource is the length of the second period; or the second resource configuration includes a first offset value, the first The offset value is, within a first period, the offset value between the start position of the second uplink resource and the end position of the first uplink resource; or the second resource configuration includes a second offset value. Offset value, the second offset value is, in a first cycle, the offset value between the start position of the second uplink resource and the receiving moment of the response message, the response message is used to respond to the Uplink data transmitted on the first uplink resource. The method according to any one of claims 1 to 3, wherein the first resource configuration includes a first period; the second resource configuration includes a third offset value and a time interval; wherein the first The three offset values are, in a first period, the offset value between the start position of the second uplink resource and the end position of the first uplink resource; the time interval is the second uplink resource The time interval between two adjacent transmission resources in the resource. The method according to any one of claims 1 to 5, wherein receiving the first resource configuration and the second resource configuration from the network device comprises: receiving first system information from a network device, where the first system information includes the first resource configuration and the second resource configuration; or, A first RRC release message from a network device is received, where the first RRC release message includes the first resource configuration and the second resource configuration. The method according to any one of claims 1 to 5, wherein receiving the first resource configuration and the second resource configuration from the network device comprises: Receive second system information from a network device, where the second system information includes the first resource configuration; receive a second RRC release message from the network device, where the second RRC release message includes the second resource configuration. The method of claim 6 or 7, wherein the method further comprises: Send the first part of the uplink data to the network device on the first uplink resource, and receive a first message from the network device, where the first message is used to respond to the first part of the uplink data, so The first message is used to activate the second resource configuration, or the first message is used to reconfigure the second resource configuration, or the first message is used to update the second resource configuration. The method of claim 8, wherein the first uplink resource is a random access resource, and the first message is a message Msg4 in a four-step random access procedure or a message in a two-step random access procedure message MsgB; Alternatively, the first uplink resource is an unlicensed GF resource, and the first message is a response message of the first part of the uplink data. The method according to any one of claims 1 to 5, wherein the second resource configuration is carried in any one of the following messages: Msg4 in the four-step random access procedure, Msg4 in the two-step random access procedure MsgB or GFR message. The method according to any one of claims 1 to 10, wherein the second resource configuration includes at least one of the following types of parameters: period of time domain resources, open-loop power control related parameters, waveform, redundancy Version sequence, repetition times, frequency hopping mode, resource allocation type, HARQ process number, demodulation reference signal DMRS related parameters, modulation and coding scheme MCS table, resource block RBG group size, time domain resources, frequency domain Resources or MCS. The method according to any one of claims 1 to 11, wherein the method comprises: Send first information to the network device, where the first information is used to indicate a mode supported or expected by the terminal device for subsequent uplink data transmission. A communication device, wherein the method comprises: a receiving module, configured to receive a first resource configuration and a second resource configuration from a network device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is used to configure subsequent a second uplink resource for uplink data transmission, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the remaining part of the uplink data except the first part; A sending module, configured to transmit the uplink data to the network device based on the first resource configuration and the second resource configuration when in the RRC idle state or the RRC_inactive INACTIVE state. The apparatus according to claim 13, wherein when transmitting the uplink data to the network device based on the first resource configuration and the second resource configuration, the sending module is specifically configured to: When the data volume of the uplink data is less than or equal to the data volume that can be transmitted at one time by the first uplink resource, transmit the uplink data to the network device based on the first uplink resource; or, When the data volume of the uplink data is greater than the data volume that can be transmitted at one time by the first uplink resource, transmit the first part of the uplink data to the network device based on the first uplink resource, and transmit the first part of the uplink data to the network device based on the first uplink resource. Two uplink resources transmit the remaining part of the uplink data except the first part to the network device. The apparatus according to claim 13 or 14, wherein the amount of data of the first part is the amount of data that can be transmitted at one time by one of the first uplink resources. The apparatus according to any one of claims 13 to 15, wherein the first resource configuration includes a first period; the second resource configuration includes a second period; The interval between the start position of the second uplink resource and the end position of the first uplink resource is the length of the second period; or the second resource configuration includes a first offset value, the first The offset value is, within a first period, the offset value between the start position of the second uplink resource and the end position of the first uplink resource; or the second resource configuration includes a second offset value. Offset value, the second offset value is, in a first cycle, the offset value between the start position of the second uplink resource and the receiving moment of the response message, the response message is used to respond to the Uplink data transmitted on the first uplink resource. The apparatus according to any one of claims 13 to 15, wherein the first resource configuration includes a first period; the second resource configuration includes a third offset value and a time interval; wherein the first The three offset values are, in a first period, the offset value between the start position of the second uplink resource and the end position of the first uplink resource; the time interval is the second uplink resource The time interval between two adjacent transmission resources in the resource. The apparatus according to any one of claims 13 to 17, wherein when receiving the first resource configuration and the second resource configuration from the network device, the receiving module is specifically configured to: receiving first system information from a network device, where the first system information includes the first resource configuration and the second resource configuration; or, A first RRC release message from a network device is received, where the first RRC release message includes the first resource configuration and the second resource configuration. The apparatus according to any one of claims 13 to 17, wherein when receiving the first resource configuration and the second resource configuration from the network device, the receiving module is specifically configured to: Receive second system information from a network device, where the second system information includes the first resource configuration; receive a second RRC release message from the network device, where the second RRC release message includes the second resource configuration. The apparatus according to claim 18 or 19, wherein the sending module is further configured to: send the first part of the uplink data to the network device on the first uplink resource; the receiving module is further configured to: for: receiving the first message from the network device; The first message is used to respond to the first part of the uplink data, and the first message is used to activate the second resource configuration, or the first message is used to reconfigure the second resource configuration, or the first message is used to reconfigure the second resource configuration. A message is used to update the second resource configuration. The apparatus of claim 20, wherein the first uplink resource is a random access resource, and the first message is a message Msg4 in a four-step random access procedure or a message in a two-step random access procedure message MsgB; Alternatively, the first uplink resource is an unlicensed GF resource, and the first message is a response message of the first part of the uplink data. The apparatus according to any one of claims 13 to 17, wherein the second resource configuration is carried in any one of the following messages: Msg4 in a four-step random access procedure, and Msg4 in a two-step random access procedure. MsgB or GFR message. The apparatus according to any one of claims 13 to 22, wherein the second resource configuration includes at least one of the following types of parameters: period of time domain resources, open-loop power control related parameters, waveform, redundancy Version sequence, repetition times, frequency hopping mode, resource allocation type, HARQ process number, demodulation reference signal DMRS related parameters, modulation and coding scheme MCS table, resource block RBG group size, time domain resources, frequency domain Resources or MCS. The device according to any one of claims 13 to 23, wherein the sending module is further configured to: Send first information to the network device, where the first information is used to indicate a mode supported or expected by the terminal device for subsequent uplink data transmission. A data transmission method, characterized in that the method comprises: Send a first resource configuration and a second resource configuration to the terminal device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is used to configure a second resource configuration for subsequent uplink data transmission. Uplink resources, the first uplink resource is used to transmit all or the first part of uplink data, and the second uplink resource is used to transmit the remaining part of the uplink data except the first part; The uplink data from the terminal device is received based on the first resource configuration and the second resource configuration. The method of claim 25, wherein the amount of data of the first part is the amount of data that can be transmitted at one time by one of the first uplink resources. The method according to claim 25 or 26, wherein the first resource configuration includes a first period; the second resource configuration includes a second period; The interval between the start position of the second uplink resource and the end position of the first uplink resource is the length of the second period; or the second resource configuration includes a first offset value, the first The offset value is, within a first period, the offset value between the start position of the second uplink resource and the end position of the first uplink resource; or the second resource configuration includes a second offset value. Offset value, the second offset value is, in a first cycle, the offset value between the start position of the second uplink resource and the receiving moment of the response message, the response message is used to respond to the Uplink data transmitted on the first uplink resource. The method of claim 25 or 26, wherein the first resource configuration includes a first period; the second resource configuration includes a third offset value and a time interval; wherein the third offset is the offset value between the start position of the second uplink resource and the end position of the first uplink resource in a first period; the time interval is the phase in the second uplink resource. The time interval between two adjacent transmission resources. The method according to any one of claims 25 to 28, wherein sending the first resource configuration and the second resource configuration to the terminal device comprises: sending first system information to the terminal device, where the first system information includes the first resource configuration and the second resource configuration; or, Send a first RRC release message to the terminal device, where the first RRC release message includes the first resource configuration and the second resource configuration. The method according to any one of claims 25 to 28, wherein sending the first resource configuration and the second resource configuration to the terminal device comprises: sending second system information to the terminal device, where the second system information includes the first resource configuration; sending a second RRC release message to the terminal device, where the second RRC release message includes the first resource configuration 2. Resource allocation. The method of claim 29 or 30, wherein the method further comprises: Receive the first part of the uplink data from the terminal device on the first uplink resource, and send a first message to the terminal device, where the first message is used to respond to the first part of the uplink data, so The first message is used to activate the second resource configuration, or the first message is used to reconfigure the second resource configuration, or the first message is used to update the second resource configuration. The method of claim 31, wherein the first uplink resource is a random access resource, and the first message is a message Msg4 in a four-step random access procedure or a message in a two-step random access procedure message MsgB; Alternatively, the first uplink resource is an unlicensed GF resource, and the first message is a response message of the first part of the uplink data. The method according to any one of claims 25 to 29, wherein the second resource configuration is carried in any one of the following messages: Msg4 in the four-step random access procedure, Msg4 in the two-step random access procedure MsgB or GFR message. The method according to any one of claims 25 to 33, wherein the second resource configuration includes at least one of the following types of parameters: period of time domain resources, open-loop power control related parameters, waveform, redundancy Version sequence, repetition times, frequency hopping mode, resource allocation type, HARQ process number, demodulation reference signal DMRS related parameters, modulation and coding scheme MCS table, resource block RBG group size, time domain resources, frequency domain Resources or MCS. The method according to any one of claims 25 to 34, wherein the method comprises: Receive first information from the terminal device, where the first information is used to indicate a mode supported or expected by the terminal device for subsequent uplink data transmission. A communication device, comprising: A sending module, configured to send a first resource configuration and a second resource configuration to the terminal device, where the first resource configuration is used to configure one or more first uplink resources, and the second resource configuration is configured to be used for subsequent uplinks a second uplink resource for data transmission, the first uplink resource is used to transmit all or the first part of the uplink data, and the second uplink resource is used to transmit the remaining part of the uplink data except the first part; A receiving module, configured to receive the uplink data from the terminal device based on the first resource configuration and the second resource configuration. The apparatus of claim 36, wherein the amount of data of the first part is the amount of data that can be transmitted at one time by one of the first uplink resources. The apparatus according to claim 36 or 37, wherein the first resource configuration includes a first period; the second resource configuration includes a second period; The interval between the start position of the second uplink resource and the end position of the first uplink resource is the length of the second period; or the second resource configuration includes a first offset value, the first The offset value is, within a first period, the offset value between the start position of the second uplink resource and the end position of the first uplink resource; or the second resource configuration includes a second offset value. Offset value, the second offset value is, in a first cycle, the offset value between the start position of the second uplink resource and the receiving moment of the response message, the response message is used to respond to the Uplink data transmitted on the first uplink resource. The apparatus of claim 36 or 37, wherein the first resource configuration includes a first period; the second resource configuration includes a third offset value and a time interval; wherein the third offset is the offset value between the start position of the second uplink resource and the end position of the first uplink resource in a first period; the time interval is the phase in the second uplink resource. The time interval between two adjacent transmission resources. The apparatus according to any one of claims 36 to 39, wherein when sending the first resource configuration and the second resource configuration to the terminal device, the sending module is specifically configured to: sending first system information to the terminal device, where the first system information includes the first resource configuration and the second resource configuration; or, Send a first RRC release message to the terminal device, where the first RRC release message includes the first resource configuration and the second resource configuration. The apparatus according to any one of claims 36 to 39, wherein when sending the first resource configuration and the second resource configuration to the terminal device, the sending module is specifically configured to: sending second system information to the terminal device, where the second system information includes the first resource configuration; sending a second RRC release message to the terminal device, where the second RRC release message includes the first resource configuration 2. Resource allocation. The apparatus according to claim 40 or 41, wherein the receiving module is further configured to: Receive the first part of the uplink data from the terminal device on the first uplink resource, and send a first message to the terminal device, where the first message is used to respond to the first part of the uplink data, so The first message is used to activate the second resource configuration, or the first message is used to reconfigure the second resource configuration, or the first message is used to update the second resource configuration. The apparatus of claim 42, wherein the first uplink resource is a random access resource, and the first message is a message Msg4 in a four-step random access procedure or a message in a two-step random access procedure message MsgB; Alternatively, the first uplink resource is an unlicensed GF resource, and the first message is a response message of the first part of the uplink data. The apparatus according to any one of claims 36 to 40, wherein the second resource configuration is carried in any one of the following messages: Msg4 in the four-step random access procedure, Msg4 in the two-step random access procedure MsgB or GFR message. The apparatus according to any one of claims 36 to 44, wherein the second resource configuration includes at least one of the following types of parameters: period of time domain resources, open-loop power control related parameters, waveform, redundancy Version sequence, repetition times, frequency hopping mode, resource allocation type, HARQ process number, demodulation reference signal DMRS related parameters, modulation and coding scheme MCS table, resource block RBG group size, time domain resources, frequency domain Resources or MCS. The apparatus according to any one of claims 36 to 45, wherein the receiving module is further configured to: Receive first information from the terminal device, where the first information is used to indicate a mode supported or expected by the terminal device for subsequent uplink data transmission. A communication device, characterized in that it includes a processor, and the processor is configured to run a set of programs, so that the method according to any one of claims 1 to 12 is executed, or, so that any one of claims 25 to 35 is executed. A described method is performed. A chip, characterized in that the chip is connected to a memory or the chip includes the memory, and is used to read and execute a software program stored in the memory, so as to realize the invention as claimed in any one of claims 1 to 12. or, to implement the method according to any one of claims 25 to 35. A computer-readable storage medium, characterized in that, the computer-readable instructions are stored in the computer storage medium, and when the computer-readable instructions are executed on the communication device, the computer-readable instructions can make any one of claims 1 to 12 The method described in any of claims 25-35 is performed, or, the method described in any one of claims 25-35 is performed.

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