WO2021004406A1

WO2021004406A1 - Communication method, device, and system

Info

Publication number: WO2021004406A1
Application number: PCT/CN2020/100274
Authority: WO
Inventors: 余唱; 常俊仁; 张向东; 肖潇; 王君
Original assignee: 华为技术有限公司
Priority date: 2019-07-05
Filing date: 2020-07-03
Publication date: 2021-01-14
Also published as: CN112187416B; CN112187416A

Abstract

Provided in the embodiments of the present application are a communication method, device and system used to address the problem of whether a terminal device needs to transmit a hybrid automatic repeat request (HARQ) feedback in a side link transmission to a network device. The method comprises: a network device determining whether a first terminal device needs to transmit a first HARQ feedback and then transmitting first indication information to the first terminal device, the first indication information being used by the first terminal device to determine whether to transmit the first HARQ feedback; the first terminal device receiving the first indication information from the network device, and determining, according thereto, to transmit the first HARQ feedback, or determining, according thereto, not to transmit the first HARQ feedback.

Description

Communication method, device and system

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office on July 5, 2019, with application number 201910606125.1, application titled "communication method, device and system", the entire content of which is incorporated into this application by reference .

Technical field

This application relates to the field of communication, and in particular to communication methods, devices and systems.

Background technique

In the new radio (NR) uplink communication, physical uplink shared channel (PUSCH) transmission is divided into uplink transmission based on dynamic grant (grant) and uplink transmission without dynamic grant. Among them, the uplink transmission without dynamic authorization can also be referred to as the uplink transmission based on configured grant (CG), that is, the network equipment semi-statically configures the uplink resources (also referred to as CG resources) for the terminal equipment. The CG resource is periodic, that is, every time a period passes, the terminal device can directly use the CG resource for uplink transmission.

At present, CG-based uplink transmission may occupy multiple hybrid automatic repeat request (HARQ) processes. Each HARQ process corresponds to one or more transmission opportunities, and each HARQ process is associated with a configuration authorization timer ( configured grant timer). If the configured grant timer of a certain HARQ process is running, uplink transmission cannot be performed on the CG resource corresponding to the HARQ process. At the same time, NR uplink communication does not support network equipment to explicitly send HARQ feedback (such as acknowledgement (ACK) or non-acknowledgement (NACK)) to terminal equipment, then when a certain HARQ process is associated with a configuration authorization timer that expires , It means that the uplink transmission of the terminal equipment on the sending opportunity corresponding to the HARQ process is successful. If the network equipment does not successfully receive or decode the uplink data on the sending opportunity, the CS-RNTI scrambled dynamic resource is scheduled to the terminal equipment. The dynamic resource is used for the terminal device to retransmit the uplink data on the sending opportunity.

The vehicle to everything (V2X) communication of the NR system includes sidelink (SL) transmission of NR V2X and the aforementioned NR transmission. Among them, the SL transmission of NR V2X supports HARQ feedback. However, when the network device uses the above-mentioned method of semi-static configuration of uplink resources to semi-statically configure SL resources for the sender device, after the sender device receives the HARQ feedback from the receiver device, does the sender device need to send this to the network device? HARQ feedback, there is no relevant solution at present.

Summary of the invention

The embodiments of the present application provide a communication method, device, and system to solve the problem of whether terminal equipment needs to send HARQ feedback in sidelink transmission to network equipment.

In order to achieve the foregoing objectives, the embodiments of the present application adopt the following technical solutions:

In the first aspect, a communication method and corresponding communication device are provided. In this solution, the first terminal device receives the first indication information from the network device; the first terminal device determines according to the first indication information that the first HARQ feedback needs to be sent, or the first terminal device determines not to send the first HARQ feedback according to the first indication information. Send the first HARQ feedback. Since the first terminal device in the embodiment of the present application can determine whether the first HARQ feedback needs to be sent according to the first indication information sent by the network device, compared with the prior art, it can be solved whether the terminal device needs to send the side chain to the network device. The HARQ feedback problem in channel transmission.

In a possible design, the first terminal device determines that the first HARQ feedback needs to be sent according to the first indication information, including: the first indication information indicates that the first HARQ feedback needs to be sent, and the first terminal device determines that the first HARQ feedback needs to be sent Feedback; or, the first terminal device determines not to send the first HARQ feedback according to the first indication information, including: the first indication information indicates not to send the first HARQ feedback, and the first terminal device determines not to send the first HARQ feedback .

In a possible design, the communication method provided in the embodiment of the present application further includes: the first indication information indicates to send the first HARQ feedback, and the first terminal determines that the first resource is a dynamic scheduling resource; or, the first indication information indicates Without sending the first HARQ feedback, the first terminal device determines that the first resource is a configuration authorized resource, where the first resource is a retransmission resource of the first terminal device.

In a possible design, the communication method provided in the embodiment of the present application further includes: the first terminal device receives second indication information from the network device, the second indication information indicates that the first resource is a dynamically scheduled resource, or, The second indication information indicates that the first resource is a configuration authorized resource; where the first resource is a retransmission resource of the first terminal device.

In a possible design, the first terminal device determines that the first HARQ feedback needs to be sent according to the first indication information, including: the first indication information indicates that the first resource is a dynamic scheduling resource, and the first terminal device determines that it needs to send the The first HARQ feedback; or, the first terminal device determines not to send the first HARQ feedback according to the first indication information, including: the first indication information indicates that the first resource is a configured authorized resource, and the first terminal device determines not to send the The first HARQ feedback, where the first resource is a retransmission resource of the first terminal device.

In a possible design, the first indication information includes a configuration authorization configuration, and the first terminal device determines that the first HARQ feedback needs to be sent according to the first indication information, including: the configuration authorization configuration includes information about configuring an authorization timer , The first terminal device determines that the first HARQ feedback needs to be sent; or, the first terminal device determines not to send the first HARQ feedback according to the first indication information, including: the configuration authorization configuration does not include the configuration authorization timer Information, the first terminal device determines not to send the first HARQ feedback.

In a possible design, the first resource is a configuration authorized resource. The communication method provided in this embodiment of the present application further includes: the second HARQ feedback is an acknowledgement ACK, and the first terminal device determines to transmit the new data at the first transmission opportunity , The second HARQ feedback corresponds to the first HARQ feedback; wherein, the first transmission opportunity is the first repeated transmission opportunity among the unused repeated transmission opportunities in the first period; or, the first transmission opportunity includes One or more of the unused repeated transmission timings in the first cycle determined by the preset rule; or, the first transmission timing is the first transmission timing of the M-th cycle after the first cycle, and M is A positive integer; where the first period is the period of the transmission timing corresponding to the second HARQ feedback. Based on this solution, after the first terminal device receives the ACK feedback from the second terminal device, it transmits new data at the unused retransmission opportunity in the first cycle. On the one hand, unnecessary retransmission is reduced, thereby reducing resource waste , Improve resource utilization; on the other hand, by reducing unnecessary retransmissions, new data of the first terminal device can be sent in advance, thereby reducing service delay; on the other hand, in the M-th period after the first period The first transmission opportunity to transmit new data clarifies the transmission timing of new data on CG resources.

In a possible design, the first resource is a configuration authorized resource. The communication method provided in this embodiment of the present application further includes: the second HARQ feedback is an unacknowledged NACK, and the first terminal device determines to retransmit at the second transmission opportunity Data, the second HARQ feedback corresponds to the first HARQ feedback; wherein, the second transmission opportunity includes part or all of the unused repeated transmission opportunities in the first period; or, the second transmission opportunity includes the unused period in the first period The repeated transmission timing used, and part or all of the transmission timings in the N cycles after the first cycle; or, the second transmission timing is the first transmission timing of the Mth cycle after the first cycle; or, The second transmission opportunity includes part or all of the transmission opportunities in P cycles after the first cycle; wherein, the first cycle is the cycle of the transmission timing corresponding to the second HARQ feedback, and N, M, and P are positive Integer. Based on this method, after receiving the NACK feedback from the second terminal device, the first terminal device transmits the retransmission data at the second transmission opportunity. Compared with the prior art, the first terminal device can determine the retransmission resource.

In a possible design, the first resource is a configuration authorized resource. The communication method provided in this embodiment of the present application further includes: configuring the authorization timer to expire or stop, and the first terminal device determines to transmit new data; or, configuring the authorization timing When the device times out or stops, the first terminal device determines to transmit retransmission data, where the configured grant timer corresponds to the second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback.

In a possible design, the configuration authorization timer times out or stops, and the first terminal device determines to transmit new data, including: the configuration authorization timer times out or stops, and the first terminal device does not receive any data from the second terminal device. The second HARQ feedback of the terminal device, the first terminal device determines to transmit new data; or, the configuration authorization timer expires or stops, and the first terminal device determines to transmit retransmission data, including: the configuration authorization timer expires or stops, And the first terminal device does not receive the information of the dynamic scheduling resource coming from the network device, and the first terminal device determines to transmit the retransmission data. Based on this method, the first terminal device can determine whether to transmit new data or retransmit data after the configuration authorization timer expires or stops.

In a possible design, the communication method provided in the embodiment of the present application further includes: the first resource is a configuration authorized resource, and the first terminal device stops configuring the authorized timer. Based on this solution, the first terminal device can access the CG resource The retransmission corresponding to the second HARQ feedback is performed at the transmission opportunity authorized by the subsequent configuration.

In a possible design, the communication method provided in the embodiment of the present application further includes: the first resource is a dynamic scheduling resource, and the first terminal device restarts the configuration authorization timer, where the configuration authorization timer and the second HARQ feedback Correspondingly, the second HARQ feedback corresponds to the first HARQ feedback. Based on this solution, the first terminal device can wait for the network device to dynamically schedule the side uplink retransmission resources, avoiding the first terminal device in the CG resource when the first terminal device waits for the network device to dynamically schedule the side uplink retransmission resources. Configure the authorized transmission timing to perform transmission.

In a possible design, the communication method provided by the embodiment of the present application further includes: the second HARQ feedback is ACK, the first terminal device stops configuring the grant timer, wherein the second HARQ feedback is the same as the first HARQ feedback Correspondingly, the configured grant timer corresponds to the second HARQ feedback. Based on this solution, because the first terminal device stops configuring the authorization timer when the side link transmission is successful, and can transmit other new data, it does not need to wait until the configured authorization timer expires before transmitting other new data, so the transmission of services can be reduced Time delay.

In a possible design, the communication method provided by the embodiment of the present application further includes: the second HARQ feedback is NACK, the first terminal device starts or restarts the configuration authorization timer, wherein the second HARQ feedback is the same as the first The HARQ feedback corresponds, and the configured grant timer corresponds to the second HARQ feedback. Based on this solution, the first terminal device can wait for the network device to dynamically schedule the side uplink retransmission resources, avoiding the first terminal device in the CG resource when the first terminal device waits for the network device to dynamically schedule the side uplink retransmission resources. Configure the authorized transmission timing to perform the transmission.

In a possible design, the communication method provided in the embodiment of the present application further includes: the first terminal device receives third instruction information from the network device; and the first terminal device stops configuring the authorization timer according to the third instruction information , Wherein the configured grant timer corresponds to the second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback. Based on this solution, because the first configuration authorization timer is stopped, other new data can be transmitted in time at the subsequent transmission timing associated with the first configuration authorization timer, without waiting for the first configuration authorization timer to expire before transmitting other new data , So it can reduce the service transmission delay.

In a possible design, the communication method provided in the embodiment of the present application further includes: the first terminal device receives fourth indication information from the network device; the first terminal device releases the HARQ process according to the fourth indication information, and The HARQ process corresponds to the second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback. Based on this solution, based on this solution, when the first terminal device requests the network device to dynamically schedule side link resources, it is possible to avoid the HARQ process being occupied when the network device does not schedule the dynamic resources, resulting in other new data not being timely The transmission problem, therefore, can reduce the service transmission delay.

In the second aspect, a communication method and corresponding communication device are provided. In this solution, the network device determines whether the first terminal device needs to send the first HARQ feedback; the network device sends first indication information to the first terminal device, and the first indication information is used by the first terminal device to determine whether the first terminal device needs to send the first HARQ feedback. HARQ feedback. Among them, the technical effects brought about by the second aspect can be referred to the technical effects brought about by the above-mentioned first aspect, which will not be repeated here.

In a possible design, if the network device determines that the first terminal device needs to send the first HARQ feedback, the first indication information indicates to send the first HARQ feedback; or, if the network device determines that the first terminal device does not The first HARQ feedback needs to be sent, and the first indication information indicates that the first HARQ feedback is not sent.

In a possible design, the communication method provided in the embodiment of the present application further includes: the network device determines that the first resource is a dynamically scheduled resource, or the network device determines that the first resource is a configuration authorized resource, and the first resource is the first resource. The retransmission resource of the terminal device; the network device sends second indication information to the first terminal device, where the second indication information is used by the first terminal device to determine that the first resource is a dynamically scheduled resource, or the second indication information is used for The first terminal device determines that the first resource is a configuration authorized resource.

In a possible design, if the network device determines that the first terminal device needs to send the first HARQ feedback, the first indication information indicates that the first resource is a dynamic scheduling resource; or, if the network device determines that the first terminal device does not need to send The first HARQ feedback, the first indication information indicates that the first resource is a configured authorized resource.

In a possible design, the first indication information includes the configuration authorization configuration, and if the network device determines that the first terminal device needs to send the first HARQ feedback, the configuration authorization configuration includes the configuration authorization timer information; or, if the network The device determines that the first terminal device does not need to send the first HARQ feedback, and the configuration authorization configuration does not include the configuration authorization timer information.

In a possible design, the communication method provided in the embodiment of the present application further includes: the network device sends third instruction information to the first terminal device, and the third instruction information is used for the first terminal device to stop configuring the authorization timer, where , The configured grant timer corresponds to the second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback. Based on this solution, because the first configuration authorization timer is stopped, other new data can be transmitted in time at the subsequent transmission timing associated with the first configuration authorization timer, without waiting for the first configuration authorization timer to expire before transmitting other new data , So it can reduce the service transmission delay.

In a possible design, the communication method provided in the embodiment of the present application further includes: the network device sends fourth indication information to the first terminal device, and the third indication information is used by the first terminal device to release the HARQ process, where the The HARQ process corresponds to the second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback. Based on this solution, based on this solution, when the first terminal device requests the network device to dynamically schedule side link resources, it is possible to avoid the HARQ process being occupied when the network device does not schedule the dynamic resources, resulting in other new data not being timely The transmission problem, therefore, can reduce the service transmission delay.

In the third aspect, a communication method and corresponding communication device are provided. In this solution, the first terminal device receives first indication information from the network device; the first terminal device determines according to the first indication information that the first resource is a dynamic scheduling resource, and the first resource is the reconfiguration of the first terminal device. Transmission resource; or, the first terminal device determines that the first resource is a configuration authorized resource according to the first indication information. Since the first terminal device in the embodiment of the present application can determine that the first resource is a dynamically scheduled resource or a configured authorized resource according to the first indication information sent by the network device, compared to the prior art, the first terminal device can determine to use CG resources The type of retransmission resource corresponding to the side link transmission.

In a possible design, the first terminal device determines that the first resource is a dynamically scheduled resource according to the first indication information, including: the first indication information indicates that the first resource is a dynamically scheduled resource, and the first terminal device determines The first resource is a dynamically scheduled resource; or, the first terminal device determines that the first resource is a configuration authorized resource according to the first indication information, including: the first indication information indicates that the first resource is a configuration authorized resource, and The first terminal device determines that the first resource is a configuration authorized resource.

In a possible design, the communication method provided in the embodiment of the present application further includes: the first indication information indicates that the first resource is a dynamic scheduling resource, and the first terminal determines that the first HARQ feedback needs to be sent; or An indication information indicates that the first resource is a configured authorized resource, and the first terminal device determines not to send the first HARQ feedback.

In a possible design, the communication method provided in the embodiment of the present application further includes: the first terminal device receives second indication information from the network device, the second indication information indicates to send the first HARQ feedback, or the first HARQ feedback The second indication information indicates that the first HARQ feedback is not sent.

In a possible design, the first terminal device determines that the first resource is a dynamic scheduling resource according to the first indication information, including: the first indication information indicates to send the first HARQ feedback, and the first terminal device determines the first The resource is a dynamically scheduled resource; or, the first terminal device determines that the first resource is a configured authorized resource according to the first indication information, including: the first indication information indicates not to send the first HARQ feedback, and the first terminal device determines The first resource is a configuration authorization resource.

In a possible design, the first indication information includes a configuration authorization configuration, and the first terminal device determines that the first resource is a dynamic scheduling resource according to the first indication information, including: the configuration authorization configuration includes a configuration authorization timer, The first terminal device determines that the first resource is a dynamic scheduling resource; or, the first terminal device determines that the first resource is a configuration authorization configuration according to the first indication information, including: the configuration authorization information does not include the configuration authorization Timer, the first terminal device determines that the first resource is a configuration authorized resource.

In a possible design, the configuration authorization timer times out or stops, and the first terminal device determines to transmit new data, including: the configuration authorization timer times out or stops, and the first terminal device does not receive any data from the second terminal device. The second HARQ feedback of the terminal device, the first terminal device determines to transmit new data; or, the configuration authorization timer expires or stops, and the first terminal device determines to transmit retransmission data, including: the configuration authorization timer expires or stops, And the first terminal device does not receive the information of the dynamic scheduling resource coming from the network device, and the first terminal device determines to transmit the retransmission data. Based on this method, the first terminal device can determine whether to transmit new data or retransmit data after the configuration authorization timer expires or stops. Based on this method, the first terminal device can determine whether to transmit new data or retransmit data after the configuration authorization timer expires or stops.

In a possible design, the communication method provided in the embodiment of the present application further includes: the first resource is a dynamic scheduling resource, and the first terminal device restarts the configuration authorization timer, where the configuration authorization timer and the second HARQ feedback Correspondingly, the second HARQ feedback corresponds to the first HARQ feedback. Based on this solution, the first terminal device can wait for the network device to dynamically schedule the side uplink retransmission resources, avoiding the first terminal device in the CG resource when the first terminal device waits for the network device to dynamically schedule the side uplink retransmission resources. Configure the authorized transmission timing to perform the transmission.

In a possible design, the communication method provided by the embodiment of the present application further includes: the second HARQ feedback is NACK, the first terminal device starts or restarts the configuration authorization timer, wherein the second HARQ feedback is the same as the first The HARQ feedback corresponds, and the configured grant timer corresponds to the second HARQ feedback. Based on this solution, the first terminal device can wait for the network device to dynamically schedule the side uplink retransmission resources, avoiding the first terminal device in the CG resource when the first terminal device waits for the network device to dynamically schedule the side uplink retransmission resources. Configure the authorized transmission timing to perform transmission.

In a fourth aspect, a communication method and corresponding communication device are provided. In this solution, in this solution, the network device determines that the first resource is a dynamic resource, or the network device determines that the first resource is a configuration authorized resource, and the first resource is a retransmission resource of the first terminal device; The device sends first indication information, the first indication information is used by the first terminal device to determine the type of the first resource, the first indication information indicates that the first resource is a dynamically scheduled resource, or the first indication information indicates the first resource Authorize resources for configuration. Among them, the technical effects brought about by the fourth aspect can be referred to the technical effects brought about by the above-mentioned third aspect, which will not be repeated here.

In a possible design, if the network device determines that the first resource is a dynamically scheduled resource, the first indication information indicates that the first resource is a dynamically scheduled resource; or, if the network device determines that the first resource is a configuration authorization Resource, the first indication information indicates that the first resource is a configuration authorized resource.

In a possible design, the communication method provided in the embodiment of the present application further includes: the network device determines whether the first terminal device needs to send the first HARQ feedback to the network device; the network device sends second indication information to the first terminal device, The second indication information is used by the first terminal device to determine whether the first HARQ feedback needs to be sent to the network device. If the network device determines that the first terminal device needs to send the first HARQ feedback, the second indication information indicates to send the first HARQ feedback, or if the network device determines that the first terminal device does not need to send the first HARQ feedback, then the second indication information Indicates not to send the first HARQ feedback.

In a possible design, if the network device determines that the first resource is a dynamically scheduled resource, the first indication information indicates that the first terminal device needs to send the first HARQ feedback; or, if the network device determines that the first resource is a configuration The authorized resource, the first indication information indicates that the first terminal device does not need to send the first HARQ feedback.

In a possible design, the first indication information includes configuration authorization configuration. If the network device determines that the first resource is a dynamic scheduling resource, the configuration authorization configuration includes information about configuring an authorization timer; or, if the network device determines the first resource One resource is a configuration authorization resource, and the configuration authorization configuration does not include the configuration authorization timer information.

In a fifth aspect, a communication device is provided for implementing the above-mentioned various methods. The communication device may be the first terminal device in the first aspect or the third aspect, for example, a vehicle-mounted communication device, or a device containing the first terminal device, such as various types of vehicles, or the first terminal device. The device included in, such as a system chip; or, the communication device may be the network device in the second aspect or the fourth aspect, or a device including the foregoing network device, or a device included in the foregoing network device. The communication device includes a module, unit, or means corresponding to the foregoing method, and the module, unit, or means can be implemented by hardware, software, or hardware execution of corresponding software. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

In a sixth aspect, a communication device is provided, including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method described in any of the above aspects. The communication device may be the first terminal device in the first aspect or the third aspect, for example, a vehicle-mounted communication device, or a device containing the first terminal device, such as various types of vehicles, or the first terminal device. The device included in, such as a system chip; or, the communication device may be the network device in the second aspect or the fourth aspect, or a device including the foregoing network device, or a device included in the foregoing network device.

In a seventh aspect, a communication device is provided, including: a processor; the processor is configured to couple with a memory, and after reading an instruction in the memory, execute the method according to any one of the foregoing aspects according to the instruction. The communication device may be the first terminal device in the first aspect or the third aspect, for example, a vehicle-mounted communication device, or a device containing the first terminal device, such as various types of vehicles, or the first terminal device. The device included in, such as a system chip; or, the communication device may be the network device in the second aspect or the fourth aspect, or a device including the foregoing network device, or a device included in the foregoing network device.

In an eighth aspect, a computer-readable storage medium is provided, and the computer-readable storage medium stores instructions that, when the instructions run on a communication device, enable the communication device to execute the method described in any of the foregoing aspects. The communication device may be the first terminal device in the first aspect or the third aspect, for example, a vehicle-mounted communication device, or a device containing the first terminal device, such as various types of vehicles, or the first terminal device. The device included in, such as a system chip; or, the communication device may be the network device in the second aspect or the fourth aspect, or a device including the foregoing network device, or a device included in the foregoing network device.

In a ninth aspect, a computer program product containing instructions is provided, when the instructions are executed on a communication device, the communication device can execute the method described in any of the above aspects. The communication device may be the first terminal device in the first aspect or the third aspect, for example, a vehicle-mounted communication device, or a device containing the first terminal device, such as various types of vehicles, or the first terminal device. The device included in, such as a system chip; or, the communication device may be the network device in the second aspect or the fourth aspect, or a device including the foregoing network device, or a device included in the foregoing network device.

In a tenth aspect, a communication device is provided (for example, the communication device may be a chip or a chip system), and the communication device includes a processor for implementing the functions involved in any of the above aspects. In a possible design, the communication device further includes a memory for storing necessary program instructions and data. When the communication device is a chip system, it may be composed of chips, or may include chips and other discrete devices.

Among them, the technical effects brought about by any of the design methods of the fifth aspect to the tenth aspect can be referred to the technical effects brought about by different design methods in the first aspect or the second aspect or the third aspect or the fourth aspect. I won't repeat them here.

In an eleventh aspect, a communication system is provided. The communication system includes the first terminal device described in the foregoing aspect and the network device described in the foregoing aspect.

In a twelfth aspect, a communication system is provided, which includes the first terminal device described in the foregoing aspect, the second terminal device described in the foregoing aspect, and the network device described in the foregoing aspect.

Description of the drawings

Figure 1a is a schematic diagram of CG resources configured by a network device in the prior art that do not include repeated transmission opportunities;

FIG. 1b is a schematic diagram of CG resources including repeated transmission occasions configured by a network device in the prior art;

FIG. 2 is a schematic structural diagram of a communication system provided by an embodiment of this application;

FIG. 3 is a schematic structural diagram of a network device, a first terminal device, and a second terminal device provided by an embodiment of the application;

4 is a schematic diagram of another structure of a first terminal device provided by an embodiment of the application;

FIG. 5 is a first flowchart of a communication method provided by an embodiment of this application;

FIG. 6 is a schematic diagram of the first terminal device transmitting TB on CG resources according to an embodiment of the application;

FIG. 7 is a schematic diagram 1 of the application process of the communication method provided by an embodiment of this application;

FIG. 8 is a second schematic diagram of the application process of the communication method provided by the embodiment of this application;

FIG. 9 is a first schematic diagram of a first terminal device determining a transmission timing for transmitting new data according to an embodiment of the application;

FIG. 10 is a second schematic diagram of the first terminal device determining the transmission timing for transmitting new data according to an embodiment of the application;

FIG. 11 is a third schematic diagram of the first terminal device determining a transmission timing for transmitting new data according to an embodiment of the application;

FIG. 12 is a schematic diagram 1 of a first terminal device determining a transmission timing for transmitting retransmitted data according to an embodiment of the application;

FIG. 13 is a second schematic diagram of the first terminal device determining a transmission timing for transmitting retransmitted data according to an embodiment of the application;

FIG. 14 is a third schematic diagram of the first terminal device determining a transmission timing for transmitting retransmitted data according to an embodiment of the application;

15 is a fourth schematic diagram of the first terminal device determining the transmission timing for transmitting retransmitted data according to an embodiment of the application;

16 is a fourth schematic diagram of the first terminal device determining the transmission timing for transmitting new data according to an embodiment of the application;

FIG. 17 is a schematic diagram 2 of the flow of a communication method provided by an embodiment of this application;

FIG. 18 is another schematic structural diagram of the first terminal device according to an embodiment of the application;

FIG. 19 is a schematic diagram of another structure of a network device provided by an embodiment of this application.

Detailed ways

In order to facilitate the understanding of the solutions in the embodiments of the present application, first, a brief introduction or definition of related technologies is given as follows:

First, CG-based uplink transmission

CG-based uplink transmission, that is, the network equipment semi-statically configures the uplink resources (also called CG resources) for the terminal equipment, and the network equipment configures the CG resources for the terminal equipment through the configured grant config. Among them, there are two Types of configuration authorization:

Configured grant Type1: Configure all parameters related to CG resources such as the frequency domain position and period of the CG resource in the configuration authorization configuration. Among them, the time domain position of the CG resource can be determined by the time domain parameters such as period. The resources configured through this type of configuration take effect immediately, and do not need to be activated or deactivated.

Configured grant Type 2: Configure some parameters related to CG resources, such as the configuration period and the number of HARQ processes in the authorization configuration. After the resource configuration of this type is configured, it needs to be activated or deactivated through L1 signaling or downlink control information (DCI). Among them, the frequency domain position of the CG resource is indicated by the DCI, and the period and the time provided in the DCI are used. The domain parameter can determine the time domain location of the CG resource.

In the above two configuration authorization types, each time domain location determined by time domain parameters such as period can be called transmission occasion (also called transmission opportunity or transmission opportunity), and each transmission opportunity corresponds to an uplink Authorization. The uplink authorization can be understood as a time-frequency resource. The frequency-domain position of the time-frequency resource is indicated in the configuration authorization configuration or indicated by DCI. The time-domain position of the time-frequency resource is the transmission timing. Time domain location, the terminal device transmits once at every transmission opportunity. It should be noted that in the embodiments of the present application, "the terminal device transmits on the transmission timing" can all be understood as "the terminal device transmits on the time-frequency resource corresponding to the transmission timing". Repeat it again.

Exemplarily, as shown in Figure 1a, taking the period of the CG resource configured by the network device as 2 time units as an example, the CG resource includes 4 transmission opportunities, namely time unit n, time unit n+2, and time Unit n+4, and time unit n+6.

Among them, each transmission opportunity of the CG resource occupies (also can be understood as association) one HARQ process, and each HARQ process is associated with a configuration authorization timer. The HARQ process occupied by each transmission opportunity may be the same or different. If the configured grant timer associated with the HARQ process occupied by a certain transmission opportunity is running, the uplink transmission cannot be performed in the transmission opportunity corresponding to the HARQ process. Exemplarily, as shown in Figure 1a, transmission timing 1 and transmission timing 3 occupy HARQ process 1, and transmission timing 2 and transmission timing 4 occupy HARQ process 2. If the configuration authorization timer associated with HARQ process 1 is at time t1 (transmission timing Start at the end time of 1) and stop at time t2 (end time of the transmission time 3), then the terminal device can perform uplink transmission at transmission time 2 but cannot perform uplink transmission at transmission time 3.

In addition, the network device can also be configured with a configuration authorization bundle. A configuration authorization bundle is within a cycle. The network device can configure K repeated transmission occasions in a configuration authorization bundle. K is a positive integer, and the terminal device is in a configuration authorization bundle. The bundle may trigger multiple HARQ retransmissions (ie, repeated transmissions) without waiting for the feedback of the previous transmission of the configuration authorization bundle. For example, the terminal device performs the initial transmission of the transmission block (transmission block, TB) at the transmission timing (initial transmission timing) allowed by the redundancy version number in the K repeated transmission opportunities, and after the TB is initially transmitted Retransmit the TB at other retransmission occasions. It should be noted that the initial transmission can be understood as the terminal device transmitting a certain TB for the first time or for the first time, which is described here in a unified manner, and the following embodiments will not be repeated.

Among them, the terminal device may determine the transmission timing allowed by the redundancy version number among the K repeated transmission timings according to the following method:

If the configured redundancy version (Redundancy Version, RV) sequence is {0,2,3,1}, the initial transmission timing allowed by the redundancy version number is the first transmission timing among the K repeated transmission timings;

If the configured RV sequence is {0,3,0,3}, the initial transmission timing allowed by the redundancy version number is the transmission timing associated with RV=0 among the K repeated transmission timings, that is, the initial transmission timing is K repeated transmission timings For the transmission timing associated with the first and third values of the RV sequence in the transmission timing, the terminal device can determine the result of this formula as 1 and 3 through (mod(n-1, 4)+1) ^th Value, the nth transmission opportunity among the K repeated transmission opportunities is the initial transmission opportunity. For example, a network device is configured with 4 repeated transmission occasions in a configuration authorization bundle, and when n is 1, the result of the formula is 1, that is, the first transmission occasion is associated with the first value of the RV sequence, then the first One transmission timing is the first transmission timing, when n is 2, the result of the formula is 2, that is, the second transmission timing is associated with the second value of the RV sequence, and the second value of the RV sequence is 3, so The second transmission timing cannot be used as the initial transmission timing, and so on.

If the configured RV sequence is {0,0,0,0}, the initial transmission timing allowed by the redundancy version number is any transmission timing among the K repeated transmission timings, except for the last repeated transmission timing when K is 8.

Exemplarily, as shown in Figure 1b, the period of the CG resource configured by the network device is 6 time units, and a configuration authorization bundle (one period) includes 3 repeated transmission opportunities, if the configured RV sequence is {0,2 ,3,1}, the terminal device performs the initial transmission in the first transmission opportunity of the three repeated transmission opportunities (ie, repeated transmission opportunity 1), and retransmits the repeated transmission opportunity 1 in the repeated transmission time 2 and the repeated transmission time 3 TB transferred in.

The network device can also configure multiple CG configurations for each terminal device, and the period and other parameters of each CG configuration can be different.

Wherein, the network device can also use the above-mentioned method of semi-statically configuring uplink resources to semi-statically configure the side link resources for the terminal device. In addition, when configuring side link resources semi-statically, each CG configuration includes a CG identifier (configured grant index), which is used to identify or distinguish different CG configurations.

It should be noted that the "time unit" in the embodiments of the present application can be a time slot or other time-means, such as a frame, a subframe, half a slot, half a subframe, and orthogonal frequency division multiplexing Orthogonal frequency division multiplexing (OFDM) symbols, or OFDM symbol groups formed by consecutive multiple OFDM symbols, etc., are not specifically limited in the embodiments of the present application, and are described here in a unified manner, and the following embodiments will not be repeated.

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Wherein, in the description of this application, unless otherwise specified, "/" means that the objects associated before and after are in an "or" relationship, for example, A/B can mean A or B; in this application, "and/or "It's just an association relationship that describes the associated objects. It means that there can be three kinds of relationships. For example, A and/or B can mean: A alone exists, A and B exist at the same time, and B exists alone. , B can be singular or plural. Also, in the description of this application, unless otherwise specified, "plurality" means two or more than two. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a). For example, at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple . In addition, in order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same items or similar items with substantially the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and order of execution, and words such as "first" and "second" do not limit the difference.

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: Orthogonal Frequency-Division Multiple Access (OFDMA), Single Carrier Frequency-Division Multiple Access (Single Carrier FDMA, SC-FDMA) and other systems. The term "system" can be replaced with "network". The OFDMA system can implement wireless technologies such as evolved universal terrestrial radio access (E-UTRA) and ultra mobile broadband (UMB). E-UTRA is an evolved version of the Universal Mobile Telecommunications System (UMTS). The 3rd generation partnership project (3GPP) uses the new version of E-UTRA in long term evolution (LTE) and various versions based on LTE evolution. The fifth generation (5thgeneration, 5G) communication system is a next-generation communication system under study. Among them, 5G communication systems include non-standalone (NSA) 5G mobile communication systems, standalone (standalone, SA) 5G mobile communication systems, or NSA’s 5G mobile communication systems and SA’s 5G mobile communication system. In addition, the communication system may also be applicable to future-oriented communication technologies, all of which are applicable to the technical solutions provided in the embodiments of the present application. The above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited to this, and the description is unified here, and the details are not repeated below.

As shown in FIG. 2, a communication system 10 provided by an embodiment of this application. The communication system 10 includes a network device 40 and a first terminal device 20 connected to the network device 40. Optionally, the communication system 10 may also include a second terminal device 30 connected to the first terminal device 20. The terminal device 30 and the network device 40 may also communicate with each other, and the communication system 10 may also include other multiple terminal devices 50.

Taking the interaction between the network device 40 and the first terminal device 20 shown in FIG. 2 as an example, in an embodiment of the present application, in a possible implementation manner, the first terminal device 20 receives the first indication information from the network device 40, The first terminal device 20 determines according to the first indication information that the first HARQ feedback needs to be sent, or the first terminal device 20 determines not to send the first HARQ feedback according to the first indication information. The specific implementation of this solution will be implemented later It is described in detail in the method embodiment and will not be repeated here. Based on this solution, since the first terminal device determines whether it needs to send the first HARQ feedback or not to send the first HARQ feedback according to the first indication information sent by the network device, compared with the prior art, it can be solved whether the terminal device needs to send the HARQ feedback. The problem.

Or, taking the interaction between the network device 40 and the first terminal device 20 shown in FIG. 2 as an example, in an embodiment of the present application, in a possible implementation manner, the first terminal device 20 receives the first instruction from the network device 40 Information, the first terminal device 20 determines that the first resource is a dynamically scheduled resource according to the first indication information, or the first terminal device 20 determines that the first resource is a configuration authorized resource according to the first indication information, where the first resource is Retransmission resources of the first terminal device.

Based on this solution, since the first terminal device in the embodiment of the present application can determine that the first resource is a dynamically scheduled resource or a configured authorized resource according to the first indication information sent by the network device, compared to the prior art, the first terminal device can Determine the type of retransmission resources corresponding to the use of CG resources for side link transmission.

Optionally, the network device 40 in the embodiment of the present application is a device that connects the first terminal device 20, the second terminal device 30, or other terminal devices 50 to a wireless network, and may be a 5G network or future evolution. Base stations in the public land mobile network (PLMN), broadband network gateway (BNG), convergence switch or non-third generation partnership project (3rd generation partnership project, 3GPP) access equipment Etc., the embodiment of the present application does not specifically limit this. Optionally, the base stations in the embodiments of the present application may include various forms of base stations, such as macro base stations, micro base stations (also called small stations), relay stations, access points, etc., which are not specifically limited in the embodiments of the present application .

Optionally, the first terminal device 20 or the second terminal device 30 in the embodiment of the present application may be a vehicle; it may also be a vehicle-mounted terminal installed on the vehicle for assisting vehicle driving, or a chip in the vehicle-mounted terminal . Alternatively, the terminal device in the embodiment of the present application may be a device used to implement a wireless communication function, such as a terminal or a chip that can be used in a terminal. Wherein, the vehicle-mounted terminal or terminal may be a user equipment (UE), access terminal, terminal unit, terminal station, mobile station in a 5G network or a public land mobile network (PLMN) that will evolve in the future , Mobile station, remote station, remote terminal, mobile equipment, wireless communication equipment, terminal agent or terminal device, etc. The access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices or wearable devices, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial control (industrial) Wireless terminal in control) or wireless terminal in self-driving (self-driving), wireless terminal in remote medical (remote medical), wireless terminal in smart grid (smart grid), wireless terminal in transportation safety (transportation safety) Terminal, wireless terminal in smart city, wireless terminal in smart home, etc. The vehicle-mounted terminal may be mobile or fixed, and the terminal may be mobile or fixed.

Optionally, the network device 40, the first terminal device 20, and the second terminal device 30 in the embodiments of the present application may also be referred to as communication devices, which may be a general-purpose device or a special-purpose device. This is not specifically limited.

Optionally, as shown in FIG. 3, a schematic diagram of the structure of the network device 40, the first terminal device 20, and the second terminal device 30 provided in this embodiment of the application. Among them, the first terminal device 20 includes at least one processor (in FIG. 3 exemplarily includes a processor 201 for illustration) and at least one transceiver (in FIG. 3 exemplarily includes a transceiver 203 as an example) Be explained). Optionally, the terminal device may also include at least one memory (in FIG. 3 exemplarily includes a memory 202 as an example), at least one output device (in FIG. 3 exemplarily, an output device 204 is included as an example. Description) and at least one input device (in FIG. 3, one input device 205 is exemplarily described as an example).

The processor 201, the memory 202, and the transceiver 203 are connected through a communication line. The communication line may include a path to transmit information between the aforementioned components.

The processor 201 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of this application Circuit. In a specific implementation, as an embodiment, the processor 201 may also include multiple CPUs, and the processor 201 may be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, or processing cores for processing data (for example, computer program instructions).

The memory 202 may be a device having a storage function. For example, it can be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions Dynamic storage devices can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), or other optical disk storage, optical disc storage ( Including compact discs, laser discs, optical discs, digital universal discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be stored by a computer Any other media taken, but not limited to this. The memory 202 may exist independently and is connected to the processor 201 through a communication line. The memory 202 may also be integrated with the processor 201.

The memory 202 is used to store computer-executable instructions for executing the solutions of the present application, and the processor 201 controls the execution. Specifically, the processor 201 is configured to execute computer-executable instructions stored in the memory 202, so as to implement the communication method described in the embodiment of the present application. Optionally, the computer execution instructions in the embodiments of the present application may also be referred to as application program codes or computer program codes, which are not specifically limited in the embodiments of the present application.

The transceiver 203 can use any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), or wireless local area networks (WLAN) Wait. The transceiver 203 includes a transmitter (transmitter, Tx) and a receiver (receiver, Rx).

The output device 204 communicates with the processor 201, and can display information in a variety of ways. For example, the output device 204 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait.

The input device 205 communicates with the processor 201 and can accept user input in a variety of ways. For example, the input device 205 may be a mouse, a keyboard, a touch screen device, or a sensor device.

The second terminal device 30 includes at least one processor (in FIG. 3 exemplarily includes a processor 301 for illustration) and at least one transceiver (in FIG. 3 exemplarily includes a transceiver 303 as an example for illustration) ). Optionally, the terminal device may also include at least one memory (in FIG. 3 exemplarily includes a memory 302 as an example), at least one output device (in FIG. 3 exemplarily, an output device 304 is included as an example. Description) and at least one input device (in FIG. 3, one input device 305 is exemplarily described as an example). In addition, related descriptions of the processor 301, the memory 302, the transceiver 303, the output device 304, and the input device 305 can refer to the processor 201, the memory 202, the transceiver 203, the output device 204, and the input device in the embodiment shown in FIG. The description of 205 will not be repeated here.

The network device 40 includes at least one processor (in FIG. 3 exemplarily includes a processor 401 as an example for illustration) and at least one transceiver (in FIG. 3 exemplarily includes a transceiver 403 as an example for illustration), and At least one network interface (in FIG. 3, one network interface 404 is included as an example for illustration). Optionally, the network device may further include at least one memory (in FIG. 3, one memory 402 is included as an example for illustration). Wherein, the processor 401, the memory 402, the transceiver 403 and the network interface 404 are connected through a communication line. The network interface 404 is used to connect to the core network device through a link (for example, the S1 interface), or to connect with the network interface of other network devices (not shown in FIG. 3) through a wired or wireless link (for example, the X2 interface). The application embodiment does not specifically limit this. In addition, for the relevant description of the processor 401, the memory 402, and the transceiver 403, reference may be made to the description of the processor 201, the memory 202, and the transceiver 203 in the embodiment shown in FIG.

With reference to the schematic structural diagram of the first terminal device 20 shown in FIG. 3, exemplarily, FIG. 4 is a specific structural form of the first terminal device 20 provided in an embodiment of the application.

Among them, in some embodiments, the functions of the processor 201 in FIG. 3 may be implemented by the processor 110 in FIG. 4.

In some embodiments, the function of the transceiver 203 in FIG. 3 may be implemented by the antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, etc. in FIG. 4.

Among them, antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the first terminal device 20 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna can be used in combination with a tuning switch.

The mobile communication module 150 may provide a wireless communication solution including 2G/3G/4G/5G and the like applied to the first terminal device 20. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (LNA), etc. The mobile communication module 150 can receive electromagnetic waves from the antenna 1, filter and amplify the received electromagnetic waves, and transmit them to the modem processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modem processor, and convert it into electromagnetic waves for radiation via the antenna 1. In some embodiments, at least part of the functional modules of the mobile communication module 150 may be provided in the processor 110. In some embodiments, at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 may be provided in the same device.

The wireless communication module 160 can provide applications on the first terminal device 20 including wireless local area networks (wireless local area networks, WLAN) (such as Wi-Fi networks), Bluetooth (bluetooth, BT), and global navigation satellite systems (global navigation satellite systems). system, GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (infrared, IR) and other wireless communication solutions. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110. The wireless communication module 160 can also receive the signal to be sent from the processor 110, perform frequency modulation, amplify it, and convert it into electromagnetic wave radiation via the antenna 2. When the first terminal device 20 is the first device, the wireless communication module 160 can provide a solution for NFC wireless communication applied to the first terminal device 20, which means that the first device includes an NFC chip. The NFC chip can improve the NFC wireless communication function. When the first terminal device 20 is the second device, the wireless communication module 160 can provide a solution for NFC wireless communication applied on the first terminal device 20, which means that the first device includes an electronic tag (such as radio frequency identification). , RFID) tags). The NFC chip of other devices close to the electronic tag can perform NFC wireless communication with the second device.

In some embodiments, the antenna 1 of the first terminal device 20 is coupled with the mobile communication module 150, and the antenna 2 is coupled with the wireless communication module 160, so that the first terminal device 20 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include long term evolution (LTE), BT, GNSS, WLAN, NFC, FM, or IR technology. The GNSS may include global positioning system (GPS), global navigation satellite system (GLONASS), Beidou navigation satellite system (BDS), quasi-zenith satellite system (quasi -zenith satellite system, QZSS) or satellite-based augmentation systems (SBAS).

In some embodiments, the function of the memory 202 in FIG. 3 may be implemented by an external memory (such as a Micro SD card) connected to the internal memory 121 or the external memory interface 120 in FIG. 4.

In some embodiments, the function of the output device 204 in FIG. 3 may be implemented by the display screen 194 in FIG. 4. Among them, the display screen 194 is used to display images, videos, and so on. The display screen 194 includes a display panel.

In some embodiments, the function of the input device 205 in FIG. 3 may be implemented by a mouse, a keyboard, a touch screen device, or the sensor module 180 in FIG. 4. Exemplarily, as shown in FIG. 4, the sensor module 180 may include, for example, a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, and a fingerprint sensor 180H. One or more of the temperature sensor 180J, the touch sensor 180K, the ambient light sensor 180L, and the bone conduction sensor 180M, which is not specifically limited in the embodiment of the present application.

In some embodiments, as shown in FIG. 4, the first terminal device 20 may further include an audio module 170, a camera 193, an indicator 192, a motor 191, a button 190, a SIM card interface 195, a USB interface 130, and a charging management module 140. One or more of the power management module 141 and the battery 142, wherein the audio module 170 can be connected to a speaker 170A (also called a “speaker”), a receiver 170B (also called a “handset”), and a microphone 170C (also called a “microphone”). ", "microphone") or the earphone interface 170D, etc., which are not specifically limited in the embodiment of the present application.

It can be understood that the structure shown in FIG. 4 does not constitute a specific limitation on the first terminal device 20. For example, in some other embodiments of the present application, the first terminal device 20 may include more or fewer components than shown, or combine certain components, or split certain components, or arrange different components. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

In the prior art, when the transmitting end device performs side link transmission on the side link resources semi-statically configured by the network device, the transmitting end device receives the HARQ feedback on the side link from the receiving end device. Afterwards, whether it is necessary to send the HARQ feedback to the network device, there is currently no relevant solution. Based on this, an embodiment of the present application provides a communication method. In the communication method, a first terminal device receives first indication information from a network device, and the first terminal device determines that the first HARQ feedback needs to be sent according to the first indication information, Or, the first terminal device determines not to send the first HARQ feedback according to the first indication information. Based on this solution, since the first terminal device determines whether it needs to send the first HARQ feedback or not to send the first HARQ feedback according to the first indication information sent by the network device, compared with the prior art, it can be solved whether the terminal device needs to send the HARQ feedback. The problem.

The communication method provided by the embodiment of the present application will be described in detail below with reference to FIG. 1a to FIG. 4 through specific embodiments.

It should be noted that the name of the message between each network element or the name of each parameter in the message in the following embodiments of this application is just an example, and other names may also be used in specific implementations. The embodiments of this application do not make specific details about this. limited.

It should be noted that the "terminal device sending HARQ feedback" in the embodiment of the present application can also be understood as "the terminal device reporting HARQ feedback", which is explained here in a unified manner, and the following embodiments will not be repeated.

In a possible implementation manner, the communication method provided in the embodiment of the present application is applied to the communication system as shown in FIG. 2. The network device semi-statically configures the side link resource for the first terminal device, that is, the side link CG Resource, a scenario where the first terminal device uses the sidelink CG resource to perform sidelink communication with the second terminal device.

In the following embodiments of the present application, the resource used for side-link transmission between the first terminal device and the second terminal device is "CG resource 1", and the initial transmission timing when the side-link transmission occurs at CG resource 1 is For example, the initial transmission timing can be any transmission timing that can perform initial transmission in CG resource 1. For example, when the configuration authorization bundling is configured, multiple repeated transmission timings in a bundle are allowed for the transmission timing of the redundancy version number , Or the first transmission timing in each cycle, or the transmission timing used in the first transmission of a certain TB, in this case, two adjacent transmission timings transmit different TBs. It is understandable that "CG resource 1" does not limit a specific side link resource. Any side link resource semi-statically configured by the network device for the first terminal device can be called CG resource 1. "Initial The “transmission timing” may be determined according to the actual situation, which is not specifically limited in the embodiment of the present application. This is a unified description, and will not be repeated in the following embodiments. As shown in FIG. 5, the communication method provided in this embodiment of the application includes the following steps:

S501: The network device sends first indication information to the first terminal device. Correspondingly, the first terminal device receives the first indication information from the network device.

The network device first determines whether the first terminal device needs to send the first HARQ feedback to the network device, and then sends the first indication information to the first terminal device. The first indication information indicates whether the first terminal device determined by the network device needs to send the first HARQ feedback to the network device. The network device sends the result of the first HARQ feedback for the first terminal device to determine whether it needs to send the first HARQ feedback to the network device according to the first indication information.

Among them, the first HARQ feedback is bundled by the first terminal device and the second terminal device at the initial transmission timing of CG resource 1 or the configuration authorization where the initial transmission timing is located, and sidelink transmission is performed at the repeated transmission timing after the initial transmission timing. HARQ feedback corresponding to the time. Exemplarily, the period of CG resource 1 configured by the network device for the first terminal device is 2 time units, and the initial transmission timing of CG resource 1 is transmission timing 1 (time unit n) as an example, as shown in FIG. 6, The first terminal device sends TB1 to the second terminal device on transmission opportunity 1 of CG resource 1, and the second terminal device sends HARQ feedback to the first terminal device based on whether it successfully receives TB1 transmitted on transmission opportunity 1, then the first HARQ The content of the feedback is the content of HARQ feedback sent by the second terminal device to the first terminal device from the TB1 transmitted on the transmission opportunity 1 of the CG resource 1.

Optionally, the network device may send the first indication information to the first terminal device through a radio resource control (RRC) message, and may also send the first indication information to the first terminal device through other messages. This embodiment of the application There is no specific restriction on this.

S502: The first terminal device determines according to the first indication information that the first HARQ feedback needs to be sent, or the first terminal device determines not to send the first HARQ feedback according to the first indication information.

Wherein, the first terminal device determines that the first HARQ feedback needs to be sent can be understood as the first terminal device determines that it needs to send the first HARQ feedback to the network device, and the first terminal device determines not to send the first HARQ feedback can be understood as the first terminal device determines Do not send the first HARQ feedback to the network device.

Optionally, in this embodiment of the application, the content of the first indication information may have the following situations:

Case 1: The first indication information indicates to send the first HARQ feedback, or the first indication information indicates not to send the first HARQ feedback.

Optionally, if the network device determines that the first terminal device needs to send the first HARQ feedback, the first indication information indicates to send the first HARQ feedback, or if the network device determines that the first terminal device does not need to send the first HARQ feedback, then The first indication information indicates that the first HARQ feedback is not to be sent.

Correspondingly, in this case 1, if the first indication information indicates to send the first HARQ feedback, the first terminal device determines that the first HARQ feedback needs to be sent to the network device; if the first indication information indicates not to send the first HARQ feedback, Then the first terminal determines not to send the first HARQ feedback to the network device.

Optionally, the first indication information may be carried in a configured grant configuration (configured grant config) corresponding to CG resource 1. Exemplarily, the network device may add one or more bits to the configuration authorization configuration corresponding to CG resource 1, and use different values of the one or more bits to indicate whether it is necessary to send the first HARQ feedback to the network device, for example, Take the network device adding a bit to the configuration authorization configuration as an example. When the value of this bit is "1", it means that the first indication information indicates that the CG resource 1 indicated by the configuration authorization configuration is used for sidelink transmission. Send the first HARQ feedback to the network device; when the value of this bit is "0", it means that the first indication information indicates that the CG resource 1 indicated by the configuration authorization configuration instruction is not sent to the network device for sidelink transmission. One HARQ feedback.

Optionally, in this case 1, the first terminal device may also determine the type of the first resource according to the first indication information. The first resource is the first terminal device using the CG resource 1 to perform the sidelink with the second terminal device. During transmission, the side link resource used for retransmission other than the repeated transmission in the configuration authorization bundle configured by the network device, the type of the first resource may be a dynamic scheduling resource or a configuration authorization resource.

Optionally, if the first indication information indicates to send the first HARQ feedback, the first terminal device determines that the first resource is a dynamically scheduled resource. Exemplarily, a possible situation is that the first terminal device receives the NACK from the second terminal device for the sidelink transmission on the CG resource 1. At this time, the first terminal device may indicate according to the first indication information Send the first HARQ feedback and determine that the NACK feedback needs to be sent to the network device. After receiving the NACK feedback, the network device confirms that the side link transmission of the first terminal device and the second terminal device on CG resource 1 fails, and then The scheduling dynamic resource is used for the first terminal device to retransmit the failed TB on the CG resource 1. Therefore, in this case, the first terminal device may send the first HARQ feedback according to the first indication information to determine that the first resource is dynamic scheduling Resources.

Optionally, if the first indication information indicates that the first HARQ feedback is not to be sent, the first terminal device determines that the first resource is a configuration authorized resource. Exemplarily, a possible situation is that the first terminal device receives the NACK from the second terminal device for the sidelink transmission on the CG resource 1. At this time, the first terminal device may indicate according to the first indication information Do not send the first HARQ feedback, determine not to send the NACK feedback to the network device, and then determine that the network device will not schedule dynamic resources for the first terminal device to retransmit the failed TB on the CG resource 1. Therefore, in this case, The first terminal device may determine that the first resource is the configured authorized resource according to the first indication information indicating not to send the first HARQ feedback.

Optionally, in this case 1, in addition to determining the type of the first resource according to the first indication information, the first terminal device may also determine the type of the first resource according to the second indication information from the network device. The second indication The information indicates that the first resource is a dynamically scheduled resource, or the second indication information indicates that the first resource is a configured authorized resource.

Correspondingly, the network device may first determine whether the type of the first resource is a dynamic scheduling resource or a configured authorized resource, and then send second indication information to the first terminal device, where the second indication information indicates the type of the first resource determined by the network device, Used for the first terminal device to determine the type of the first resource according to the second indication information. Wherein, if the network device determines that the first resource is a dynamically scheduled resource, the second indication information indicates that the first resource is a dynamically scheduled resource, or if the network device determines that the first resource is a configuration authorized resource, the second indication information indicates the first resource. One resource is the configuration authorized resource.

Optionally, the network device may use a 1-bit value to indicate the second indication information. For example, the 1-bit value "1" means that the second indication information indicates that the first resource is a dynamically scheduled resource, and the 1-bit value The value "0" indicates that the second indication information indicates that the first resource is a configuration authorized resource.

Or, the network may express the second indication information by using a multi-bit value. Exemplarily, the network device may add multiple bits to the configuration authorization configuration corresponding to CG resource 1, and the different values of the multiple bits indicate that the first resource is a dynamically scheduled resource, or indicate a CG identifier corresponding to the CG identifier. The CG resource is the first resource. The CG identifier can be the CG identifier corresponding to CG resource 1. At this time, the retransmission resource corresponding to CG resource 1 except for repeated transmission in the configuration authorization bundle configured by the network device is the CG resource 1 itself can also be other CG identifiers of the first terminal device. At this time, the retransmission resources corresponding to CG resource 1 except for repeated transmission in the configuration authorization bundle configured by the network device are other than CG resource 1. CG resources. When the value of the multiple bits indicates the CG identifier, it is considered that the second indication information indicates that the first resource is a configuration authorized resource. Optionally, when the multiple bits are not included in the configuration authorization configuration, or when the value of the multiple bits is a specific value, the first resource may be considered as a dynamic scheduling resource.

Case 2: The first indication information indicates that the first resource is a dynamically scheduled resource, or the first indication information indicates that the first resource is a configured authorized resource.

Optionally, if the network device determines that the first terminal device needs to send the first HARQ feedback, the first indication information may indicate that the first resource is a dynamic scheduling resource, or if the network device determines that the first terminal device does not need to send the first HARQ Feedback, the first indication information may indicate that the first resource is a configuration authorized resource.

Correspondingly, in the second case, if the first indication information indicates that the first resource is a dynamically scheduled resource, then because the first terminal device needs to use the dynamic resource scheduled by the network device to retransmit the failed TB on the CG resource 1, the first The terminal device needs to make the network device know whether the side link transmission of the first terminal device on the CG resource 1 is successful, so that the network device can schedule dynamic resources when it determines that the transmission fails. Therefore, the first terminal device can determine that it needs to send to the network device Send the first HARQ feedback; or, if the first indication information indicates that the first resource is a configured authorized resource, then because the first terminal device uses the configured authorized resource to retransmit the failed transmission TB on the CG resource 1, there is no need for the network device to dynamically schedule resources Therefore, the network device may not need to determine whether the sidelink transmission of the first terminal device on the CG resource 1 is successful. Therefore, the first terminal device may determine that it does not need to send the first HARQ feedback to the network device.

Optionally, the first indication information may be carried in a configured grant configuration (configured grant config) corresponding to CG resource 1. Exemplarily, the network device may add 1 bit to the configuration authorization configuration, and indicate that the first resource is a dynamic scheduling resource or a configuration authorization resource through a different value of the 1 bit, for example, when the value of the 1 bit is When it is "1", it means that the first indication information indicates that the first resource is a dynamically scheduled resource; when the value of this 1-bit is "0", it means that the first indication information indicates that the first resource is a configured authorized resource;

Or, for example, the network device may add multiple bits to the configuration authorization configuration, and the different values of the multiple bits indicate that the first resource is a dynamically scheduled resource, or indicate a CG identifier, and the CG identifier corresponds to the CG resource That is the first resource, the CG identifier can be the CG identifier corresponding to CG resource 1. In this case, the retransmission resource corresponding to CG resource 1 is CG resource 1 itself, or it can be other CG identifiers of the first terminal device. , The retransmission resource corresponding to CG resource 1 is other CG resources except CG resource 1. When the value of the multiple bits indicates the CG identifier, it is considered that the first indication information indicates that the first resource is a configuration authorized resource. Optionally, when the multiple bits are not included in the configuration authorization configuration, or when the value of the multiple bits is a specific value, the first resource may be considered as a dynamic scheduling resource.

Case 3: The first indication information includes the configuration authorization configuration corresponding to CG resource 1.

Optionally, if the network device determines that the first terminal device needs to send the first HARQ feedback, the configuration authorization configuration includes information about configuring the authorization timer, or if the network device determines that the first terminal device does not need to send the first HARQ Feedback, then the configuration authorization timer information is not included in the configuration authorization configuration. Optionally, the configuration authorization timer is a configuration authorization timer associated with the HARQ process occupied (or associated) by the initial transmission timing of the CG resource 1.

Correspondingly, if the configuration authorization configuration of CG resource 1 includes the configuration authorization timer information, the first terminal device determines that it needs to send the first HARQ feedback to the network device, or if the configuration authorization information does not include the configuration authorization timer Information, the first terminal device determines not to send the first HARQ feedback to the network device.

Optionally, in the scenario where the first indication information is carried in the configuration authorization configuration corresponding to CG resource 1 in the above case 1 and case 2, it can be considered whether the network device needs to send the side link to the network device with the CG as the granularity configuration HARQ feedback on the At this time, the network device may carry the first indication information in each CG configuration for the first terminal device, and the first indication information carried by each CG configuration may be different. For example, the network device may configure the first terminal The device sends the first HARQ feedback to the network device when using the CG resource indicated by CG configuration 1 for sidelink transmission, and does not send the first HARQ feedback to the network device when using the CG resource indicated by CG configuration 2 for sidelink transmission;

It should be noted that the embodiment of the present application does not limit the first indication information to be carried in the configuration authorization configuration. The network device may also carry the first indication information in other configurations, and may also indicate in the configuration that the configuration includes The first indication information of corresponds to which CG configuration of the first terminal device.

Or, optionally, the network device may also configure whether it needs to send HARQ feedback on the side link to the network device at the granularity of the terminal device. At this time, the network device may only send one first indication information to the first terminal device. When the first terminal device uses the CG resource indicated by each CG configuration to perform sidelink transmission, it determines according to the one first indication information that the first HARQ feedback needs to be sent to the network device or determines not to send the first HARQ feedback to the network device. Exemplarily, taking the first terminal device including CG configuration 1 and CG configuration 2 as an example, the first indication information sent by the network device to the first terminal device indicates to send the first HARQ feedback, then the first terminal device may determine to use the CG configuration When the CG resource indicated by 1 and the CG resource indicated by CG configuration 2 are transmitted on the side link, the first HARQ feedback needs to be sent to the network device according to the HARQ feedback on the side link.

Optionally, in the foregoing step S502, when the first terminal device determines that the first HARQ feedback needs to be sent according to the first indication information, the following step S503 is performed.

S503: The first terminal device sends the first HARQ feedback to the network device. Correspondingly, the network device receives the first HARQ feedback from the first terminal device.

Based on the communication method provided by the embodiment of the present application, the first terminal device receives the first indication information from the network device, and determines according to the first indication information that the first HARQ feedback needs to be sent, or, according to the first indication information, determines not to send The first HARQ feedback. Since the first terminal device in the embodiment of the present application can determine whether the first HARQ feedback needs to be sent according to the first indication information sent by the network device, compared with the prior art, the problem of whether the terminal device needs to send the HARQ feedback can be solved.

The actions of the first terminal device in the above steps S501 to S503 may be called by the processor 201 in the first terminal device 20 shown in FIG. 3 to call the application program code stored in the memory 202 to instruct the network device to execute; In the actions of the network terminal device in S501 to S503, the processor 401 in the network device 40 shown in FIG. 3 can call the application program code stored in the memory 402 to instruct the network device to execute this embodiment without any limitation.

It should be noted that in the communication method shown in FIG. 5, the first terminal device determines whether to send the first HARQ feedback to the network device. It is understandable that the second terminal device may also determine whether to send the first HARQ feedback to the network device. Send the first HARQ feedback. Exemplarily, the network device may send the foregoing first indication information to the second terminal device, and the second terminal device determines whether the first HARQ feedback needs to be sent to the network device according to the method shown in FIG. 5 above. For related description, refer to FIG. 5. The description in the method shown will not be repeated here.

Optionally, the embodiment of the present application further provides an application process of the communication method as shown in FIG. 5. As shown in FIG. 7, the process includes the following steps:

S701: The network device configures CG resources for the first terminal device.

Optionally, the network device may configure one or more CG resources for the first terminal device, which is not specifically limited in the embodiment of the present application.

S702: The first terminal device sends the TB to the second terminal device on the CG resource. Correspondingly, the second terminal device receives the TB from the first terminal device.

Exemplarily, in this application, the CG resource for side-link transmission between the first terminal device and the second terminal device is CG resource 1, and the first terminal device transmits to the second terminal device at the initial transmission timing of CG resource 1. Take TB as an example.

S703: The second terminal device sends HARQ feedback to the first terminal device. Correspondingly, the first terminal device receives the HARQ feedback from the second terminal device.

Wherein, the HARQ feedback is used to feed back to the first terminal device whether the second terminal device successfully received the TB transmitted at the initial transmission timing or whether it successfully received the configuration authorization bundle at the initial transmission timing, and repeated transmission after the initial transmission timing The TB transmitted repeatedly on the occasion.

S704. The first terminal device determines that the first HARQ feedback needs to be sent.

The first terminal device may determine that it needs to send the first HARQ feedback to the network device according to the above-mentioned communication method shown in FIG. 5, or determine not to send the first HARQ feedback to the network device. In this embodiment, the first terminal device determines that it needs to send the first HARQ to the network device as an example for description.

It should be noted that there is no inevitable sequence between step S704 and step S702. Steps S702 and S703 can be executed first, and then step S704, or step S704 can be executed first, and then steps S702 and S703 are executed. Make specific restrictions.

S705: The first terminal device sends the first HARQ feedback to the network device. Correspondingly, the network device receives the first HARQ feedback from the first terminal device.

The content of the first HARQ feedback is the same as the content of the HARQ feedback sent by the second terminal device to the first terminal device in step S703.

Optionally, if the first HARQ feedback is NACK, continue to perform steps S706-S707.

S706: The network device sends information about dynamic resource scheduling to the first terminal device. Correspondingly, the first terminal device receives dynamic resource scheduling information from the network device.

Optionally, if the first HARQ feedback is NACK, the network device may determine that the side link transmission between the first terminal device and the second terminal device has failed. At this time, the network device may schedule dynamic resources for the first terminal device and send it to The first terminal device sends the dynamic scheduling resource information, so that the first terminal device retransmits the TB whose transmission fails.

S707. The first terminal device retransmits the TB to the second terminal device on the dynamic scheduling resource.

Wherein, the retransmitted TB is the TB that is bound by the first terminal device at the initial transmission timing or configuration authorization of the initial transmission timing of the CG resource 1, and the transmission fails at the repeated transmission timing after the initial transmission timing.

Optionally, the embodiment of the present application also provides another application process of the communication method as shown in FIG. 5. As shown in FIG. 8, the process includes the following steps:

S801. The network device configures CG resources for the first terminal device.

S802: The first terminal device sends the TB to the second terminal device on the CG resource. Correspondingly, the second terminal device receives the TB from the first terminal device.

S803. The second terminal device sends HARQ feedback to the first terminal device. Correspondingly, the first terminal device receives the HARQ feedback from the second terminal device.

Among them, the relevant description of steps S801-S803 can refer to the description of steps S701-S703, which will not be repeated here.

S804: The first terminal device determines not to send the first HARQ feedback.

It should be noted that there is no inevitable sequence between step S804 and step S802. Steps S802 and S803 can be performed first and then step S804, or step S804 can be performed first, and then steps S802 and S803 are performed. This is not the case in this embodiment of the application. Make specific restrictions.

The first terminal device may determine that it needs to send the first HARQ feedback to the network device according to the above-mentioned communication method shown in FIG. 5, or determine not to send the first HARQ feedback to the network device. In this embodiment, the first terminal device determines not to send the first HARQ feedback to the network device as an example for description.

Optionally, if the HARQ feedback sent by the second terminal device in step S803 is NACK, step S805 is performed.

S805: The first terminal device retransmits the TB on the CG resource.

It should be noted that the above processes shown in FIG. 7 and FIG. 8 are only exemplary descriptions of the application of the communication method provided in the embodiment of the present application, and do not limit the application scenarios of the communication method provided in the embodiment of the present application. In application, the communication method provided in the embodiment of the present application can also be applied to other scenarios, which is not specifically limited in the embodiment of the present application.

In a possible implementation manner, when the first resource is a configuration authorized resource, the communication method provided in the embodiment of the present application may also determine the transmission timing of transmitting new data or transmitting retransmitted data on CG resource 1. In the following embodiments of this application, the retransmitted data is the TB transmitted by the first terminal device at the initial transmission timing of CG resource 1. This TB is called TB1, and the new data is the first or first transmission of the first terminal device. Different from the TB of TB1, this TB is referred to as TB2 for description, and the description is unified here, and the following embodiments are not repeated.

Optionally, according to the different feedback configuration of the second terminal device, the method for the first terminal device provided in the embodiment of the present application to determine the transmission timing of transmitting new data or transmitting retransmitted data on CG resource 1 is also different. It can include the following two situations:

Case 1: The feedback configuration of the second terminal device is to feed back ACK or NACK to the first terminal device for sidelink transmission.

Among them, in this configuration, when the second terminal device successfully receives or decodes the TB sent by the first terminal device, it feeds back an ACK to the first terminal device; otherwise, the second terminal device fails to successfully receive or decode the TB sent by the first terminal device. At that time, NACK is fed back to the first terminal device. In the embodiment of the present application, description is made by taking an example in which the TB1 transmitted by the second terminal device at the initial transmission timing of the CG resource 1 feeds back an ACK or NACK to the first terminal device.

In this case 1, if the second HARQ feedback is ACK, the first terminal device determines to transmit new data at the first transmission opportunity, that is, to transmit TB2 at the first transmission opportunity.

Among them, the second HARQ feedback is the HARQ that the second terminal device is bound to the initial transmission timing of CG resource 1 or the configuration authorization where the initial transmission timing is located, and the HARQ transmitted by the TB1 transmitted at the repeated transmission timing after the initial transmission timing to the first terminal device Feedback, the second HARQ feedback corresponds to the first HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback. It can be understood that the second HARQ feedback has the same content as the first HARQ feedback, except that the first HARQ feedback is on the uplink. Transmission, the second HARQ feedback is transmitted on the side link.

Optionally, depending on the configuration of CG resource 1, the number of repeated transmission occasions in the configuration authorization bundle, and the time when the first terminal device receives the second HARQ feedback with ACK content, the first transmission time is also different. Different, exemplary can include the following three scenarios:

① The network device configures a configuration authorization bundle for CG resource 1, and the configuration authorization bundle includes multiple repeated transmission occasions. The first terminal device is at the end of the last repeated transmission occasion of the first configuration authorization bundle (or the first cycle) or The second HARQ feedback with the content of ACK from the second terminal device is received before the start time.

Among them, the first configuration authorization bundling is the configuration authorization bundling where the initial transmission timing of CG resource 1 is located, the first period is the period of the transmission timing corresponding to the second HARQ feedback, and the transmission timing corresponding to the second HARQ feedback is the CG resource The initial transmission timing of 1, or the transmission timing corresponding to the second HARQ feedback is other repeated transmission timings after the initial transmission timing in the first configuration authorization bundle (that is, in the first configuration authorization bundle, after the initial transmission timing, other repeated transmissions TB1 The repeated transmission timing of) is described here in a unified manner, and details are not repeated in the following embodiments.

Exemplarily, suppose that the CG resource 1 configured by the network device for the first terminal device is shown in FIG. 9, the initial transmission timing of CG resource 1 is repeated transmission timing 1, that is, the repeated transmission timing 1 of CG resource 1 by the first terminal device Send TB1 to the second terminal device, and the transmission opportunity corresponding to the second HARQ feedback is transmission opportunity 1, and the first cycle is the cycle in which transmission opportunity 1 is located. Alternatively, the first terminal device sends TB1 to the second terminal device at the initial transmission timing of CG resource 1 (repetitive transmission timing 1), and repeatedly transmits TB1 at repeated transmission timing 2, and receives before the start time of repeated transmission timing 3. When the content fed back to the second terminal device is the second HARQ feedback of ACK, the transmission timing corresponding to the second HARQ feedback may also be the repeated transmission timing 2. That is, the second HARQ feedback is associated with the Nth repeated transmission of TB1 in the first configuration authorization bundle, and N is less than or equal to the number of repeated transmissions included in the first configuration authorization bundle.

Optionally, in this scenario ①, the first transmission opportunity is the first retransmission opportunity among the unused retransmission opportunities in the first configuration authorization bundle (or the first cycle). Exemplarily, as shown in FIG. 9, the first terminal device receives the second HARQ feedback with the content of ACK from the second terminal device at time t1, then the first unused repeat transmission opportunity in the first cycle The first repeated transmission timing is repeated transmission timing 2 (time unit n+4), that is, the first transmission timing is repeated transmission timing 2. It should be noted that in the embodiment of this application, unused repeated transmission timing can also be understood Repetitive transmission opportunities that are inactive, ineffective, or unreached are described here in a unified manner, and the following embodiments will not be repeated.

Alternatively, the first transmission timing is one or more transmission timings among unused repeated transmission timings in the first configuration authorization bundle (or first cycle) determined by the first terminal device according to a preset rule, and the preset rule may be The first transmission timing is the repeated transmission timing allowed by the redundancy version number. Exemplarily, if the configuration authorization bundle of network configuration CG resource 1 includes 4 repeated transmission opportunities, the redundancy version sequence used for transmission on CG resource 1 is {0,3,0,3}, where the redundancy version number is 0 The corresponding transmission timing is the initial transmission timing. If after calculation, the redundancy version number that should be adopted for transmission on repeated transmission timing 3 is 0, then the first transmission timing is repeated transmission timing 3. For related calculations, please refer to the brief description of the above related technologies. The description in the introduction will not be repeated here.

②The network device configures the configuration authorization binding for CG resource 1, and the configuration authorization binding includes multiple repeated transmission occasions, and the first terminal device is after the end time of the last repeated transmission occasion of the first configuration authorization binding (or the first cycle) Receive the second HARQ feedback from the second terminal device that the content is ACK.

Optionally, in this scenario ②, the first transmission timing is the first transmission timing of the M-th period after the first period (it can also be understood as the first repeated transmission timing in this scenario ②), and M is Positive integer. Exemplarily, suppose that the CG resource 1 configured by the network device for the first terminal device is shown in FIG. 10, the value of M is 1, the initial transmission timing of CG resource 1 is repeated transmission timing 1, and the first terminal device is at t1 For example, when the second HARQ feedback with the content of ACK is received from the second terminal device at the moment, the first transmission opportunity of the first cycle after the first cycle is the repeated transmission opportunity 1 (time unit n+8), that is, the first transmission opportunity is the second repeated transmission opportunity 1 shown in FIG. 10 at this time.

Or, optionally, in this scenario ②, the first transmission opportunity is the first transmission opportunity after the moment when the second HARQ feedback is received (in this scenario ②, it can also be understood as the first repeated transmission opportunity ) Or the first transmission opportunity available for initial transmission.

③The network equipment has not configured the configuration authorization binding for CG resource 1, or the network equipment has configured the configuration authorization binding for CG resource 1. The configuration authorization binding includes a repetitive transmission opportunity (that is, a configuration authorization binding or only one transmission in a cycle ), the first terminal device receives the second HARQ feedback with the content of ACK from the second terminal device within the first configuration authorization bundle (or the first cycle).

Optionally, in this scenario ③, the first transmission timing is the first transmission timing of the M-th period after the first period, and M is a positive integer. Exemplarily, suppose that the CG resource 1 configured by the network device for the first terminal device is shown in Fig. 11, the initial transmission timing of the CG resource 1 is transmission timing 1, and the first terminal device receives from the second terminal device at time t1. Is the second HARQ feedback with the content of ACK as an example, if the value of M is 1, then the first transmission opportunity in the first cycle after the first cycle is transmission opportunity 2 (time unit n+2), That is, the first transmission opportunity at this time is transmission opportunity 2; or, if the value of M is 2, then the first transmission opportunity in the second cycle after the first cycle is transmission opportunity 3 (time unit n+4), That is, the first transmission timing is transmission timing 3.

Based on the communication method provided by the embodiments of the present application, after receiving the ACK feedback from the second terminal device, the first terminal device transmits new data at the unused repeated transmission opportunity in the first period. On the one hand, unnecessary repetition is reduced. Transmission, thereby reducing resource waste and improving resource utilization; on the other hand, by reducing unnecessary retransmissions, new data of the first terminal device can be sent in advance, thereby reducing service delay; on the other hand, after the first cycle The first transmission opportunity of the M-th cycle to transmit the new data, which clarifies the transmission timing of the new data on the CG resource.

In this case 1, if the second HARQ feedback is NACK, the first terminal device determines to transmit the retransmitted data at the second transmission opportunity, that is, retransmits TB1 at the second transmission opportunity.

Optionally, according to the different configuration of CG resource 1, the number of repeated transmission occasions in the configuration authorization bundle, and the time when the first terminal device receives the NACK, the second transmission time is also different. Examples may include Three scenarios are as follows:

① The network device configures a configuration authorization bundle for CG resource 1, and the configuration authorization bundle includes multiple repetitive transmission occasions. The first terminal device is at the end or start of the last repetitive transmission occasion of the first configuration authorization (or first cycle) The second HARQ feedback with NACK content from the second terminal device is received before the time.

Optionally, in this scenario ①, the second transmission opportunity is part or all of the unused retransmission opportunity in the first configuration authorization bundle (or the first cycle). Exemplarily, suppose that the CG resource 1 configured by the network device for the first terminal device is shown in FIG. 12, the initial transmission timing of CG resource 1 is repeated transmission timing 1, and the first terminal device receives the data from the second terminal device at time t1. Is the second HARQ feedback with NACK content, the second transmission opportunity includes repeated transmission opportunity 3 or the second transmission opportunity includes repeated transmission opportunity 3 and repeated transmission opportunity 4, where, if the first terminal device is at time t2 (repetitive transmission opportunity 3 and repeated transmission opportunity 4) When an ACK for TB1 is received from the second terminal device, the second transmission opportunity is repeated transmission opportunity 3; or, if the first terminal device does not receive the second terminal in the first period For the ACK fed back by the device for TB1, the second transmission opportunity includes repeated transmission opportunity 3 and repeated transmission opportunity 4; or, even if the first terminal device receives the ACK for TB1 from the second terminal device at time t2, the first terminal device still The repeated transmission of TB1 is performed at the repeated transmission timing 4, that is, the second transmission timing includes repeated transmission timing 3 and repeated transmission timing 4.

Or, optionally, in this scenario ①, the second transmission timing includes all unused repeated transmission timings in the first configuration authorization bundle (or the first cycle), and a part or part of the N cycles after the first cycle. For all retransmission timings (including retransmission timings that can be used for initial transmission), N is a positive integer, and the N cycles may be consecutive N cycles or discontinuous N cycles. In this case, the first terminal device retransmits all the retransmission opportunities that are not used in the first cycle, and part or all of the retransmission opportunities in the N cycles after the first cycle, until the second terminal device is received ACK feedback for TB1. A possible situation is that the first terminal device receives the ACK feedback from the second terminal device for TB1 in the Nth cycle. At this time, part or all of the transmission opportunities in the N cycles include the previous N-1 cycles. All transmission opportunities in the Nth cycle and partial transmission opportunities in the Nth cycle, and the first terminal device stops the retransmission on the remaining repeated transmission opportunities of the Nth cycle after receiving the ACK feedback for TB1.

Exemplarily, suppose that the CG resource 1 configured by the network device for the first terminal device is shown in FIG. 13, the initial transmission timing of CG resource 1 is repeated transmission timing 1, and the first terminal device receives the data from the second terminal device at time t1. The second HARQ feedback with the content of NACK, taking the value of N as 1, and the 1 period as the first period after the first period as an example, the second transmission opportunity includes repeated transmission in the first period Timing 3, repeating transmission timing 4, and part or all of the transmission timings in the first cycle (the cycle in which the time unit n+8 is located) after the first cycle. Exemplarily, a possible situation is that the first terminal device receives the ACK feedback of the second terminal device for TB1 at time t2. At this time, the second transmission opportunity includes repeated transmission opportunity 3, repeated transmission opportunity 4, and the first Repeat transmission timing 1 in the first cycle after the cycle (time unit n+8), and the first terminal device stops at the remaining repeated transmission timing (time unit n+10, etc.) of the first cycle after the first cycle Retransmission.

②The network device configures the configuration authorization binding for CG resource 1, and the configuration authorization binding includes multiple repeated transmission occasions, and the first terminal device is at the end of the last repeated transmission occasion of the first configuration authorization binding (or the first cycle) or After the start time, the second HARQ feedback with NACK content is received from the second terminal device.

Optionally, in this scenario ②, the second transmission timing includes part or all of the transmission timings (including repeated transmission timings that can be used for initial transmission) in P cycles after the first cycle, and P is a positive integer. In this case, the first terminal device retransmits TB1 at part of P cycles after the first cycle or at the transmission repeat transmission occasion, until the second terminal device receives ACK feedback for TB1. Exemplarily, suppose that the CG resource 1 configured by the network device for the first terminal device is shown in Figure 14. The initial transmission opportunity of the CG resource 1 is the repeated transmission opportunity 1, and the first terminal device receives the data from the second terminal device at time t1. Is the second HARQ feedback with the content of NACK. Taking the value of K as 1, and the 1 period is the first period after the first period as an example, the second transmission opportunity includes the first period after the first period. The timing of part or all of the transmission in each cycle. Exemplarily, a possible situation is that the first terminal device receives the ACK feedback from the second terminal device for TB1 at time t2. At this time, the second transmission opportunity includes repeated transmission in the first period after the first period. Opportunity 1 (time unit n+8), and the first terminal device stops retransmission on the remaining retransmission opportunity (time unit n+10, etc.) of the first cycle after the first cycle.

Optionally, in this scenario ②, the first transmission opportunity is the first transmission opportunity after the moment when the second HARQ feedback is received (it can also be understood as the first repeated transmission opportunity in this scenario ②) or The first transmission opportunity can be used for the first transmission.

③The network equipment does not configure authorization binding for CG resource 1, or the network equipment configures configuration authorization binding for CG resource 1. The configuration authorization binding includes a repeated transmission opportunity (that is, one configuration authorization binding or only one transmission in a cycle) , The first terminal device receives the second HARQ feedback whose content is NACK from the second terminal device in the first period.

Optionally, in this scenario ③, the second transmission timing is the first transmission timing of the M-th period after the first period. Exemplarily, suppose that the CG resource 1 configured by the network device for the first terminal device is shown in FIG. 15. The initial transmission timing of the CG resource 1 is transmission timing 1, and the first terminal device receives the data from the second terminal device at time t1. Take the second HARQ feedback with NACK as an example. If the value of M is 1, then the first transmission opportunity in the first cycle after the first cycle is transmission opportunity 2 (time unit n+2), that is At this time, the second transmission timing is transmission timing 2; or, if the value of M is 2, the first transmission timing of the second period after the first period is transmission timing 3 (time unit n+4), that is At this time, the second transmission timing is transmission timing 3.

Or, optionally, in this scenario ③, the second transmission timing includes transmission timings included in M cycles after the first cycle. Exemplarily, as shown in FIG. 15, taking the first terminal device at time t1 received the second HARQ feedback from the second terminal device with NACK content as an example, if the value of M is 2, then after the first cycle All the transmission opportunities in the two cycles are transmission opportunity 2 and transmission opportunity 3 (ie, time unit n+2 and time unit n+4), that is, the second transmission opportunity includes transmission time 2 and transmission time 3.

Or, optionally, in this scenario ③, the second transmission opportunity is the Mth cycle or the first transmission opportunity of the M cycle after receiving the second HARQ feedback.

Based on the communication method provided by the embodiments of the present application, after receiving the NACK feedback from the second terminal device, the first terminal device transmits the retransmitted data at the second transmission opportunity. Compared with the prior art, the first terminal device can pass through This method determines retransmission resources.

Case 2: The feedback configuration of the second terminal device is to feed back NACK to the first terminal device for sidelink transmission.

Among them, in this configuration, when the second terminal device fails to successfully receive or decode the transmission block sent by the first terminal device, it sends a NACK feedback to the first terminal device, and the second terminal device successfully receives or decodes the transmission sent by the first terminal device. During the block, no feedback is sent to the first terminal device. In the embodiment of the present application, description is made by taking an example in which the TB1 transmitted by the second terminal device at the initial transmission timing of the CG resource 1 feeds back NACK to the first terminal device.

Optionally, in the second case, the first terminal device occupies (or associates) a configured grant timer (configuredGrantTimer) associated with the HARQ process according to the timing (or time) of receiving the NACK or the initial transmission timing of the CG resource 1 Determining the transmission timing of new data (TB2), which may include the following scenarios as an example:

① The network device configures a configuration authorization bundle for CG resource 1, and the configuration authorization bundle includes multiple repeated transmission opportunities. The initial transmission opportunity of CG resource 1 occupies (or associates) the configuration authorization timer associated with the HARQ process and times out or stops, and During the operation of the configuration authorization timer, if the first terminal device does not receive the second HARQ feedback from the second terminal device that the content of TB1 is NACK, the first terminal device determines to transmit TB2.

Optionally, the first terminal device determining to transmit TB2 may include: the first terminal device determining to transmit TB2 at the first transmission opportunity after the configuration authorization timer expires or stops. Exemplarily, as shown in Figure 16, taking the initial transmission timing of CG resource 1 as repeated transmission timing 1 as an example, the configuration authorization timer associated with the HARQ process occupied by transmission timing 1 starts at t1, and times out or stops at t2 , If in the time period between t1 and t2, the first terminal device does not receive the second HARQ feedback from the second terminal device whose content is NACK, then the first terminal device determines that the configuration authorization timer expires Or, TB2 is transmitted at the first transmission timing after stopping (repetitive transmission timing 1 corresponding to time unit n+10).

Alternatively, optionally, the first terminal device determining to transmit TB2 may include: the first terminal device determining that the configuration authorization configuration (or cycle) is available for repeated transmission of the initial transmission when the configuration authorization timer expires or stops. TB2 is transmitted on the timing. For example, as shown in Figure 16, if the repeated transmission opportunity 2 corresponding to time unit n+10 cannot be used for initial transmission, and the repeated transmission opportunity 3 corresponding to time unit n+12 (not shown in Figure 16 ) Can be used for initial transmission, then the first terminal device transmits TB2 at the repeat transmission opportunity 3 corresponding to the time unit n+12.

Or, optionally, if the configuration authorization timer expires or stops in the first period, the first terminal device determining to transmit TB2 may include: the first terminal device determining to transmit at the first transmission opportunity after the first period TB2.

②The network device configures the configuration authorization bundle for CG resource 1, and the configuration authorization bundle includes multiple repeated transmission occasions. The first terminal device did not receive the second terminal in the first cycle when the initial transmission occasion of CG resource 1 was If the content of the device is the second HARQ feedback of NACK, the first terminal device determines to transmit TB2, that is, the first terminal device believes that the second terminal device has successfully received TB1; or whether the first terminal device determines that the second terminal device successfully receives TB1 or If TB1 is not successfully received, the first terminal device does not retransmit TB1.

In this case, optionally, the first terminal device determining to transmit TB2 may include: the first terminal device determining to transmit TB2 at the first repeated transmission opportunity in the first period after the first period; or, the first terminal The device determines to transmit TB2 at a repeated transmission opportunity available for initial transmission in the first cycle after the first cycle; or, the first terminal device determines to transmit TB2 at the first transmission opportunity after the first cycle.

Or, the network device configures a configuration authorization bundle for CG resource 1, and the configuration authorization bundle includes multiple repeated transmission occasions, and the first terminal device does not receive the second terminal device at the preset feedback moment corresponding to the transmission occasion of TB1 The second HARQ feedback with NACK content, the first terminal device determines to transmit TB2.

Or, the network device configures a configuration authorization bundle for CG resource 1, and the configuration authorization bundle includes multiple repeated transmission occasions, and the first terminal device does not receive the second terminal device at the preset feedback moment corresponding to the transmission occasion of TB1 The second HARQ feedback with the content of NACK, the first terminal device transmits TB1 on all or part of the N cycles or Nth cycle after the feedback time.

③The network equipment does not configure authorization binding for CG resource 1, or the network equipment configures configuration authorization binding for CG resource 1. The configuration authorization binding includes a repeated transmission opportunity (that is, one configuration authorization binding or only one transmission in a cycle) If the first terminal device does not receive the second HARQ feedback with NACK content from the second terminal device in the first cycle where the initial transmission timing of the CG resource 1 is located, the first terminal device determines to transmit TB2. In this case, optionally, the first terminal device determining to transmit TB2 may include: the first terminal device determining to transmit TB2 at the first transmission opportunity in the first period after the first period; or, the first terminal device It is determined to transmit TB2 at a transmission opportunity available for initial transmission in the first cycle after the first cycle; or, the first terminal device determines to transmit TB2 at the first transmission opportunity after the first cycle.

Alternatively, if the first terminal device determines that the configuration authorization timer associated with the HARQ process occupied (or associated) for transmitting TB1 is timed out or stopped, the first terminal device determines to transmit TB2. In this case, optionally, the first terminal device determining to transmit TB2 may include: the first terminal device determining the retransmission opportunity in the configuration authorization bundle (or cycle) where the configuration authorization timer expires or stops ( Or it can be used to transmit TB2 on the repeated transmission occasion of the initial transmission.

Based on the communication method provided by the embodiment of the present application, the first terminal device transmits TB2 at the first transmission opportunity after the configuration authorization timer expires or stops, or at the first transmission opportunity of the first cycle after the first cycle, compared to Based on the existing technology, the transmission timing of new data can be determined on the CG resource.

Optionally, in the second case, the first terminal device determines the transmission timing of the retransmission data (TB1) according to the timing of receiving the NACK or the configuration authorization timer associated with the HARQ process occupied by the initial transmission timing of the CG resource 1. , Exemplary can include the following scenarios:

① The network device configures a configuration authorization bundle for CG resource 1, and the configuration authorization bundle includes multiple repeated transmission occasions, and the first terminal device receives it before the end of the last repeated transmission occasion of the first configuration authorization (or first cycle) When the second HARQ feedback from the second terminal device is NACK, the first terminal device determines to retransmit TB1.

Optionally, the first terminal device determining to retransmit TB1 may include: the first terminal device determines part or all of the unused repeated transmission occasions in the first cycle to retransmit TB1; or, the first terminal device does not retransmit TB1 in the first cycle. The retransmission timing used, and part or all of the N cycles after the first cycle (including the transmission timing for new transmission and the retransmission timing) retransmission TB1, N is a positive integer, and the relevant description can refer to the above The description in scenario ① when the second HARQ feedback is NACK in case 1, will not be repeated here.

②The network device configures the configuration authorization binding for CG resource 1, and the configuration authorization binding includes multiple repeated transmission occasions, and the first terminal device is after the end time of the last repeated transmission occasion of the first configuration authorization binding (or the first cycle) After receiving the second HARQ feedback with NACK content from the second terminal device, the first terminal device determines to retransmit TB1.

Optionally, the first terminal device determining to retransmit TB1 may include: the first terminal device determining to retransmit TB1 at part or all of the transmission timing in P cycles after the first cycle, P is a positive integer, and the relevant description can refer to the above The description in scenario ② when the second HARQ feedback is NACK in case 1, will not be repeated here.

③The configuration authorization timer associated with the HARQ process occupied by the initial transmission opportunity of CG resource 1 times out or stops, and during the operation of the configuration authorization timer, the first terminal device does not receive the information of the dynamic scheduling resource from the network device, then A terminal device determines to retransmit TB1.

Optionally, the first terminal device determining to retransmit TB1 may include: the first terminal device determining to retransmit TB1 at the first transmission opportunity after the configuration authorization timer expires or stops.

Based on the communication method provided by the embodiment of the present application, the first terminal device determines to perform retransmission and determines the transmission timing when retransmission is performed after receiving the NACK feedback from the second terminal device or after the configuration authorization timer expires or stops. In the prior art, the first terminal device can determine the retransmission resource through this method.

It is understandable that the method for the first terminal device in the embodiment of the present application to determine the transmission timing of transmitting new data or transmitting retransmitted data on CG resource 1 does not depend on whether the first terminal device determines that it needs to send the first HARQ to the network device. Feedback, that is, when the first terminal device does not execute the method shown in FIG. 5, the transmission timing for transmitting new data or transmitting retransmitted data on the CG resource 1 may also be determined according to the above method.

In another possible implementation manner, the communication method provided in this embodiment can also configure the authorization timer associated with the HARQ process occupied (or associated) with the initial transmission opportunity of CG resource 1 (hereinafter referred to as the first configuration authorization timing The first configuration grant timer can also be understood as the configuration grant timer corresponding to the second HARQ feedback. For the related description of the second HARQ feedback, please refer to the description of the second HARQ feedback in the above embodiment , I won’t repeat it here.

Exemplarily, the control of the first configuration authorization timer in the embodiment of the present application may include the following scenarios:

Case 1: The first resource is a configuration authorization resource, and the first terminal device stops or does not start the first configuration authorization timer, or the first resource is a dynamic scheduling resource, and the first terminal device starts or restarts the first configuration authorization timer.

For the related description of the first resource, reference may be made to the description of the first resource in the foregoing embodiment, which will not be repeated here.

Optionally, if the first terminal device determines that the first resource is a configuration authorized resource, the first terminal device stops or does not start the first configuration authorization timing when receiving the second HARQ feedback from the second terminal device that the content is NACK Device. Based on this solution, the first terminal device can perform the retransmission corresponding to the second HARQ feedback at the transmission timing authorized by the subsequent configuration of the CG resource 1.

Alternatively, if the first terminal device determines that the first resource is a dynamically scheduled resource, the first terminal device starts or restarts the first configuration authorization timer when receiving the second HARQ feedback from the second terminal device that the content is NACK. Based on this solution, the first terminal device can wait for the network device to dynamically schedule the side uplink retransmission resources, avoiding the first terminal device in the CG resource 1 while the first terminal device waits for the network device to dynamically schedule the side uplink retransmission resources. The transmission is performed on the transmission timing authorized by the configuration.

Case 2: If the second HARQ feedback is ACK, the first terminal device stops the first configuration grant timer. Based on this solution, the first terminal device stops the first configuration authorization timer when it determines that the transmission of TB1 of the CG resource 1 is successful, and can transmit other new data in time, without waiting for the first configuration authorization timer to expire before transmitting other data. New data, so it can reduce the service transmission delay.

Or, if the second HARQ feedback is NACK, the first terminal device starts or restarts the first configuration grant timer. Based on this solution, the first terminal device can wait for the network device to dynamically schedule the side uplink retransmission resources, avoiding the first terminal device in the CG resource 1 while the first terminal device waits for the network device to dynamically schedule the side uplink retransmission resources. The transmission is performed on the transmission timing authorized by the configuration.

Case 3: After the first terminal device receives the second HARQ feedback from the second terminal device, regardless of whether the second HARQ feedback is ACK or NACK, the first terminal device stops the first configuration authorization timer.

Case 4: When the first terminal device determines to use the HARQ feedback mechanism on the side link, it stops or determines not to start the first configuration authorization timer. Exemplarily, for unicast and multicast services, if the service enables (or can use) side link HARQ feedback, the first configuration authorization timer is stopped or not started.

Case 5. When the feedback of the second terminal device is configured to only feed back NACK, if the first terminal device receives the second HARQ feedback from the second terminal device with the content of NACK during the operation of the first configuration authorization timer, it will start Or restart or stop the first configuration authorization timer. Based on this solution, the first terminal device can wait for the network device to dynamically schedule the side uplink retransmission resources, avoiding the first terminal device in the CG resource 1 while the first terminal device waits for the network device to dynamically schedule the side uplink retransmission resources. The transmission is performed on the transmission timing authorized by the configuration.

Situation 6: When the first resource is a dynamic scheduling resource, the first terminal device needs to send the HARQ feedback on the side link to the network device so that the network device can schedule the dynamic resource for it. In order for the first terminal device to know whether the network device will schedule dynamic resources for the first terminal device, the first terminal device may restart the first configuration authorization timer after sending the HARQ feedback on the side link to the network device. If the first configuration authorization timer expires and the first terminal device does not receive information about dynamic resource scheduling from the network device, the first terminal device can determine that the network device will not schedule dynamic resources for it, and the first terminal device is in the first Transmit new data at the first transmission opportunity after the configuration authorization timer expires, or the first terminal device transmits new data at the first transmission opportunity available for initial transmission after the first configuration authorization timer expires; or, Retransmission is performed at the first transmission opportunity after the first configuration authorization timer expires.

Based on this solution, compared with the prior art, the first terminal device can control and configure the authorization timer based on HARQ feedback on the side link.

Optionally, in addition to controlling the configuration authorization timer based on the HARQ feedback on the side link, the first terminal device may also control the configuration authorization timer by receiving instruction information from the network device. In a possible implementation manner, the network device sends third instruction information to the first terminal device, and correspondingly, the first terminal device receives the third instruction information from the network device, and the third instruction information may instruct to stop configuring the authorization timer , The first terminal device stops the foregoing first configuration authorization timer according to the third indication information. Based on this solution, because the first configuration authorization timer is stopped, other new data can be transmitted in time at the subsequent transmission timing associated with the first configuration authorization timer, without waiting for the first configuration authorization timer to expire before transmitting other new data , So it can reduce the service transmission delay.

It is understandable that the foregoing method of controlling the configuration authorization timer in the embodiment of the present application does not depend on whether the first terminal device determines that it needs to send the first HARQ feedback to the network device, that is, the first terminal device does not perform the method shown in FIG. 5 In the method, the authorization timer can also be controlled and configured according to the above method.

In another possible implementation manner, the communication method provided in the embodiment of the present application may further include: the network device sends fourth instruction information to the first terminal device, and correspondingly, the first terminal device receives the fourth instruction from the network device Information, the fourth indication information may indicate the release of the HARQ process, and the first terminal device releases the HARQ process according to the fourth indication information. The HARQ process is the HARQ process occupied (or associated) by the initial transmission opportunity of CG resource 1. The HARQ The process can also be understood as corresponding to the second HARQ feedback, and the related description of the second HARQ feedback can refer to the description of the second HARQ feedback in the foregoing embodiment, which will not be repeated here. Wherein, releasing the HARQ process can be understood as clearing the HARQ buffer, or releasing the HARQ process occupied by the data (or TB) fed back through the second HARQ, or releasing the HARQ process occupied by the transmission timing corresponding to the second HARQ feedback.

Optionally, the fourth indication information may be the HARQ process number. If the first device terminal receives the fourth indication information including the HARQ process number, it determines to release the HARQ process corresponding to the HARQ process number.

Based on this solution, when the first terminal device requests the network device to dynamically schedule side link resources, it is possible to avoid the HARQ process being occupied when the network device does not schedule the dynamic resources, resulting in the problem that other new data cannot be transmitted in time. Therefore, the service transmission delay can be reduced.

It can be understood that the method for releasing the HARQ process in the embodiment of the present application does not depend on whether the first terminal device determines that it needs to send the first HARQ feedback to the network device, that is, when the first terminal device does not execute the method shown in FIG. 5 , The HARQ process can also be released according to the above method.

The communication method provided in the foregoing embodiment can enable the first terminal device to determine whether it is necessary to send HARQ feedback in side uplink transmission to the network device. In another possible implementation manner, the communication method provided in the embodiment of the present application can also enable The first terminal device determines the type of retransmission resources used for retransmissions other than retransmissions in the authorization bundle when using CG resources for side-line transmission. This communication method is applied to the communication system shown in FIG. 2, The network device semi-statically configures the side link resource, that is, the side link CG resource, for the first terminal device, and the first terminal device uses the side link CG resource to perform side link communication with the second terminal device.

In the following embodiments of the present application, the resource used for side-link transmission between the first terminal device and the second terminal device is "CG resource 1", and the initial transmission timing when the side-link transmission occurs at CG resource 1 is For example, the initial transmission timing can be any transmission timing that can perform initial transmission in CG resource 1. For example, when the configuration authorization bundling is configured, multiple repeated transmission timings in a bundle are allowed for the transmission timing of the redundancy version number , Or the first transmission timing in each cycle, or the transmission timing used in the first transmission of a certain TB, in this case, two adjacent transmission timings transmit different TBs. It is understandable that "CG resource 1" does not limit a specific side link resource. Any side link resource semi-statically configured by the network device for the first terminal device can be called CG resource 1. "Initial The “transmission timing” may be determined according to the actual situation, which is not specifically limited in the embodiment of the present application. This is a unified description, and will not be repeated in the following embodiments. As shown in FIG. 17, another communication method provided by this embodiment of the application, the communication method includes the following steps:

S1701. The network device sends first indication information to the first terminal device. Correspondingly, the first terminal device receives the first indication information from the network device.

Among them, the network device first determines the type of the first resource. The first resource is used for retransmissions other than repeated transmissions in the configuration authorization bundle when the first terminal device uses CG resource 1 to perform sidelink transmission with the second terminal device. The type of the first resource may be a dynamically scheduled resource or a configured authorized resource. After determining the type of the first resource, the network device sends first indication information to the first terminal device, where the first indication information instructs the network device to determine that the first resource is a dynamic scheduling resource or a configuration authorized resource.

Optionally, the network device may send the first indication information to the first terminal device through an RRC message, and may also send the first indication information to the first terminal device through other messages, which is not specifically limited in the embodiment of the present application.

It should be noted that the embodiment of the present application does not limit the trigger timing of step S1701, and the network device may execute step S1701 at any moment when the first indication information needs to be sent to the first terminal device. Exemplarily, the network device may send the first indication information to the first terminal device after receiving the HARQ feedback on the side link sent by the first terminal device, and may also send the first indication to the first terminal device at other times Information, this embodiment of the application does not limit this.

S1702. The first terminal device determines that the first resource is a dynamically scheduled resource according to the first indication information, or the first terminal device determines that the first resource is a configuration authorized resource according to the first indication information.

The first resource is a retransmission resource when the first terminal device uses CG resource 1 to perform sidelink transmission with the second terminal device.

Case 1: The first resource of the first indication information is a dynamically scheduled resource, or the first indication information indicates that the first resource is a configured authorized resource.

Optionally, if the network device determines that the first resource is a dynamically scheduled resource, the first indication information indicates that the first resource is a dynamically scheduled resource, or if the network device determines that the first resource is a configuration authorized resource, the first indication information indicates The first resource is the configuration authorized resource.

Correspondingly, in this case 1, if the first resource of the first indication information is a dynamic scheduling resource, the first terminal is set to determine that the first resource is a dynamic scheduling resource; if the first indication information indicates that the first resource is a configuration authorized resource, Then, the first terminal assumes that the first resource is a configuration authorized resource.

Optionally, in this case 1, the first terminal device may also determine according to the first indication information that the first HARQ feedback needs to be sent to the network device, or according to the first indication information, determine not to send the first HARQ feedback to the network device. For the detailed description of the first HARQ feedback, please refer to the description of the first HARQ feedback in step S502, which will not be repeated here.

Optionally, if the first indication information indicates that the first resource is a dynamically scheduled resource, the first terminal device determines that it is necessary to send the first HARQ feedback to the network device. Exemplarily, a possible situation is that the first terminal device receives the NACK from the second terminal device for the sidelink transmission on the CG resource 1. At this time, the first terminal device may determine according to the first indication information The first resource is a dynamically scheduled resource. Therefore, the first terminal device needs to send the NACK feedback to the network device so that the network device confirms that the side link transmission of the first terminal device and the second terminal device on CG resource 1 failed, and then The network device is allowed to schedule dynamic resources for the first terminal device to retransmit the failed TB on the CG resource 1. Therefore, in this case, the first terminal device may indicate that the first resource is a dynamically scheduled resource according to the first indication information, and determine that the first HARQ feedback needs to be sent to the network device.

Optionally, if the first indication information indicates that the first resource is a configuration authorized resource, the first terminal device determines not to send the first HARQ feedback to the network device. Exemplarily, a possible situation is that the first terminal device receives the NACK from the second terminal device for the sidelink transmission on the CG resource 1. At this time, the first terminal device may determine according to the first indication information The first resource is a configuration authorized resource. The first terminal device does not need to request a dynamic scheduling resource from the network device for retransmission. Therefore, in this case, the first terminal device can indicate that the first resource is a configuration authorized resource according to the first indication information. , It is determined not to send the first HARQ feedback to the network device.

Optionally, in this case 1, in addition to determining whether the first HARQ feedback needs to be sent to the network device according to the first indication information, the first terminal device may also determine whether it needs to send the first HARQ feedback to the network device according to the second indication information from the network device. Send the first HARQ feedback. The second indication information indicates to send the first HARQ feedback, or the second indication information indicates not to send the first HARQ feedback.

Correspondingly, the network device may first determine whether the first terminal device needs to send the first HARQ feedback to the network device, and then send second indication information to the first terminal device. The second indication information indicates whether the first terminal device determined by the network device is The result of the first HARQ feedback needs to be sent to the network device for the first terminal device to determine whether it needs to send the first HARQ feedback to the network device according to the second indication information. If the network device determines that the first terminal device needs to send the first HARQ feedback, the second indication information indicates to send the first HARQ feedback, or if the network device determines that the first terminal device does not need to send the first HARQ feedback, then the second indication information Indicates not to send the first HARQ feedback.

Optionally, the network device may use a 1-bit value to indicate the second indication information. For example, the 1-bit value is "1" indicating that the second indication information indicates to send the first HARQ feedback, and the 1-bit value is "0" indicates that the second indication information indicates not to send the first HARQ feedback.

Case 2: The first indication information indicates to send the first HARQ feedback, or the first indication information indicates not to send the first HARQ feedback.

Optionally, if the network device determines that the first resource is a dynamically scheduled resource, the first indication information may indicate that the first terminal device needs to send the first HARQ feedback, or if the network device determines that the first resource is a configuration authorized resource, then An indication information may indicate that the first terminal device does not need to send the first HARQ feedback.

Correspondingly, in the second case, if the first indication information indicates to send the first HARQ feedback, the network device can schedule the dynamic resource for the first terminal device according to the first HARQ feedback to retransmit the CG resource 1 and the transmission fails. Therefore, the first terminal device can determine that the first resource is a dynamically scheduled resource; or, if the first indication information indicates that the first HARQ feedback is not to be sent, the network device cannot know whether the transmission on the side link is successful or not , And further cannot schedule dynamic resources for the first terminal device to retransmit the failed TB on the CG resource 1. Therefore, the first terminal device can determine that the first resource is a configuration authorized resource.

Optionally, the first indication information may be carried in the configuration authorization configuration corresponding to CG resource 1. Exemplarily, the network device may add one or more bits to the configuration authorization configuration corresponding to CG resource 1, and use different values of the one or more bits to indicate whether it is necessary to send the first HARQ feedback to the network device, for example, Take the network device adding a bit to the configuration authorization configuration as an example. When the value of this bit is "1", it means that the first indication information indicates that the CG resource 1 corresponding to the configuration authorization configuration is required for sidelink transmission. Send the first HARQ feedback to the network device; when the value of this bit is "0", it means that the first indication information indicates that the CG resource 1 corresponding to the configuration authorization configuration should not be sent to the network device for sidelink transmission. One HARQ feedback.

Optionally, if the network device determines that the first resource is a dynamically scheduled resource, the configuration authorization configuration includes configuration authorization timer information, or if the network device determines that the first resource is a configuration authorization resource, then the configuration authorization The configuration does not include the configuration authorization timer information. Optionally, the configuration authorization timer may be a configuration authorization timer associated with the HARQ process occupied (or associated) with the initial transmission timing of the CG resource 1.

Correspondingly, if the configuration authorization configuration includes the configuration authorization timer information, the first terminal device determines that the first resource is a dynamic scheduling resource, or if the configuration authorization information does not include the configuration authorization timer information, then The first terminal device determines that the first resource is a configuration authorized resource.

Optionally, if the configuration authorization configuration includes the configuration authorization timer information associated with CG resource 1, the first terminal device determines that the first resource is a dynamic scheduling resource, and the configuration authorization timer information corresponds to the configuration authorization Waiting for the dynamic resource scheduled by the network device during the timer operation. If the first terminal device does not receive information about the dynamic resource scheduled by the network device before the configuration authorization timer expires, the first terminal device can determine that the network device will not be It schedules dynamic resources, and can further determine that the first resource is a configured authorized resource, or the first terminal device can use the next transmission opportunity of the CG resource 1 for retransmission.

Optionally, in the scenario where the first indication information is carried in the configuration authorization configuration corresponding to CG resource 1 in the above case 1 and case 2, it can be considered that the network device configures the first resource with CG as the granularity as a dynamic scheduling resource or configuration authorization. Resources. At this time, the network device may carry the first indication information in each CG configuration for the first terminal device, and the first indication information carried by each CG configuration may be different. For example, the network device may configure the first terminal When the device uses the CG resource indicated by CG configuration 1 for side link transmission, the corresponding first resource is the dynamic scheduling resource, and when the device uses the CG resource indicated by CG configuration 2 for side link transmission, the corresponding first resource is the configured authorized resource. ；

It should be noted that the embodiment of the present application does not limit the first indication information to be carried in the configuration authorization configuration. The network device may also carry the first indication information in other configurations, and may also indicate in the configuration that the configuration includes The first indication information of corresponds to which CG configuration of the first terminal device. Exemplarily, the network device may schedule the dynamic resource after receiving the HARQ feedback on the side link sent by the first terminal device, and carry the first indication information in the DCI indicating the dynamic resource to indicate that the first resource is Dynamic scheduling of resources; or the network device directly indicates through DCI that the first resource is a configured authorized resource after receiving the HARQ feedback on the side link sent by the first terminal device.

Or, optionally, the network device may also configure the first resource as a dynamic scheduling resource or configure an authorized resource at the granularity of the terminal device. In this case, the network device may only send one first indication information to the first terminal device, and the first terminal device When the device uses each CG resource for side link transmission, it determines that the first resource is a dynamic scheduling resource or determines that the first resource is a configuration authorized resource according to the one piece of first indication information. Exemplarily, taking the first terminal device including CG configuration 1 and CG configuration 2 as an example, the first indication information sent by the network device to the first terminal device indicates that the first resource is a configuration authorized resource, and the first terminal device may determine to use The first resource corresponding to the CG resource indicated by CG configuration 1 and the CG resource indicated by CG configuration 2 during sidelink transmission are both configured authorized resources.

Based on the communication method provided in the embodiments of the present application, the first terminal device receives the first indication information from the network device, and determines according to the first indication information that the first resource is a dynamically scheduled resource, or, according to the first indication information, determines the first One resource is the configuration authorized resource. Since the first terminal device in the embodiment of the present application can determine that the first resource is a dynamically scheduled resource or a configured authorized resource according to the first indication information sent by the network device, compared to the prior art, the first terminal device can determine to use CG resources When performing side-link transmission, configure the side-link resources used for retransmissions other than repeated transmissions in the authorization bundle.

Wherein, the actions of the first terminal device in the above steps S1701 to S1702 may be called by the processor 201 in the first terminal device shown in FIG. 3 to call the application program code stored in the memory 202 to instruct the network device to execute; the above step S1701 To the actions of the network terminal device in S1702, the processor 401 in the network device shown in FIG. 3 can call the application program code stored in the memory 402 to instruct the network device to execute this embodiment without any limitation.

In a possible implementation manner, when the first resource is a configuration authorized resource, the communication method provided in this embodiment can also determine the transmission timing for transmitting new data or transmitting retransmitted data on CG resource 1, the related description and The technical effect achieved can be referred to the description of determining the transmission timing of transmitting new data or transmitting retransmitted data in the foregoing embodiment, which is not repeated here.

In another possible implementation manner, the communication method provided in this embodiment can also control the configuration authorization timer associated with the HARQ process occupied by the initial transmission timing of CG resource 1. For related descriptions and technical effects achieved, please refer to The description of controlling the configuration of the authorization timer in the foregoing embodiment will not be repeated here.

In another possible implementation manner, the communication method provided in this embodiment can also release the HARQ process according to the instruction information sent by the network device. For the relevant description and the technical effects achieved, please refer to the first terminal device in the above embodiment according to the first The description of the fourth indication information release HARQ process will not be repeated here.

It can be understood that, in the above embodiments, the methods and/or steps implemented by the terminal device (including the first terminal device and the second terminal device) can also be implemented by components (such as chips or circuits) that can be used in the terminal device. The methods and/or steps implemented by network devices can also be implemented by components (such as chips or circuits) that can be used in network devices.

The foregoing mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between various network elements. Correspondingly, an embodiment of the present application also provides a communication device, which is used to implement the foregoing various methods. The communication device may be the first terminal device in the foregoing method embodiment, such as a vehicle-mounted communication device, or a device including the foregoing first terminal device, such as various types of vehicles, or a device included in the foregoing first terminal device , Such as a system chip; or, the communication device may be the network device in the foregoing method embodiment, or a device including the foregoing network device, or a device included in the foregoing network device. It can be understood that, in order to realize the above-mentioned functions, the communication device includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiments of the present application may divide the communication device into functional modules according to the foregoing method embodiments. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

For example, take the communication device as the first terminal device in the foregoing method embodiment as an example. FIG. 18 shows a schematic structural diagram of a first terminal device 180. The first terminal device 180 includes a transceiver module 1801 and a processing module 1802. The transceiver module 1801 may also be referred to as a transceiver unit to implement sending and/or receiving functions, and may be, for example, a transceiver circuit, transceiver, transceiver, or communication interface.

In a possible implementation, the transceiver module 1801 is configured to receive the first indication information from the network device; the processing module 1802 is configured to determine that the first HARQ feedback needs to be sent according to the first indication information; or, the processing module 1802 , Used to determine not to send the first HARQ feedback according to the first indication information.

Optionally, the processing module 1802, configured to determine that the first HARQ feedback needs to be sent according to the first indication information, includes: a processing module 1802, configured to send the first HARQ feedback according to the first indication information if the first indication information indicates It is determined that the first HARQ feedback needs to be sent. Or, the processing module 1802, configured to determine not to send the first HARQ feedback according to the first indication information, includes: a processing module 1802, configured to determine according to the first indication information if the first indication information indicates not to send the first HARQ feedback The first HARQ feedback is not sent.

Optionally, the processing module 1802 is further configured to determine that the first resource is a dynamically scheduled resource if the first indication information indicates to send the first HARQ feedback; or, the processing module 1802 is further configured to determine that the first indication information indicates not to send the first HARQ A HARQ feedback, determining that the first resource is a configured authorized resource.

Optionally, the transceiver module 1801 is further configured to receive second indication information from the network device, the second indication information indicating that the first resource is a dynamically scheduled resource, or the second indication information indicating that the first resource is a configuration authorized resource .

Optionally, a processing module 1802, configured to determine that the first HARQ feedback needs to be sent according to the first indication information, includes: a processing module 1802, configured to: if the first indication information indicates that the first resource is a dynamically scheduled resource, according to the first indication information The indication information determines that the first HARQ feedback needs to be sent. Alternatively, the processing module 1802, configured to determine not to send the first HARQ feedback according to the first indication information, includes: a processing module 1802, configured to: if the first indication information indicates that the first resource is a configured authorized resource, according to the first indication information Determine not to send the first HARQ feedback.

Optionally, the first indication information includes a configuration authorization configuration, and the processing module 1802 is configured to determine that the first HARQ feedback needs to be sent according to the first indication information, and includes: a processing module 1802, configured to configure authorization timing if the configuration authorization configuration includes configuration authorization timing Based on the first indication information, it is determined that the first HARQ feedback needs to be sent. Alternatively, the processing module 1802 is configured to determine not to send the first HARQ feedback according to the first indication information, and includes: a processing module 1802, configured to: if the configuration authorization configuration does not include information for configuring the authorization timer, according to the first indication information Determine not to send the first HARQ feedback.

Optionally, the processing module 1802 is further configured to determine to transmit new data at the first transmission opportunity if the first resource is a configured authorized resource and the second HARQ feedback is an acknowledgement ACK, the second HARQ feedback and the first HARQ feedback correspond.

Optionally, the processing module 1802 is further configured to determine to retransmit the data at the second transmission opportunity if the first resource is a configured authorized resource and the second HARQ feedback is an ACK.

Optionally, the processing module 1802 is further configured to determine to transmit new data if the first resource is a configuration authorized resource and the configuration authorization timer expires or stops; or, the processing module 1802 is also configured to determine if the first resource is a configuration authorized resource , Configure the authorization timer to expire or stop, and confirm the transmission and retransmission of data.

Optionally, the processing module 1802 is also used to determine to transmit new data if the configuration authorization timer expires or stops, including: the processing module 1802, is also used to determine if the configuration authorization timer expires or stops and the transceiver module 1801 does not receive The second HARQ feedback from the second terminal device determines to transmit new data. Alternatively, the processing module 1802 is also used to determine the transmission of retransmitted data if the configured authorization timer expires or stops, including: the processing module 1802, is also used to determine if the configured authorization timer expires or stops and the transceiver module 1801 does not receive From the information of the dynamic scheduling resource of the network equipment, the transmission and retransmission data are determined.

Optionally, the processing module 1802 is further configured to stop configuring the authorization timer if the first resource is a configuration authorized resource; or, the processing module 1802 is also configured to restart the configuration authorization timer if the first resource is a dynamically scheduled resource.

Optionally, the processing module 1802 is further configured to stop configuring the authorization timer if the second HARQ feedback is ACK; or, the processing module 1802 is also configured to start or restart the configuration authorization timer if the second HARQ feedback is NACK.

Optionally, the transceiver module 1801 is further configured to receive the third indication information from the network device; the processing module 1802 is further configured to stop configuring the authorization timer according to the third indication information.

Optionally, the transceiver module 1801 is further configured to receive fourth indication information from the network device; the processing module 1802 is further configured to release the HARQ process according to the fourth indication information.

In another possible implementation manner, the transceiver module 1801 is configured to receive first indication information from a network device; the processing module 1802 is configured to determine that the first resource is a dynamically scheduled resource according to the first indication information; or The module 1802 is configured to determine that the first resource is a configuration authorized resource according to the first indication information.

Optionally, a processing module 1802, configured to determine that the first resource is a dynamically scheduled resource according to the first indication information, includes: a processing module 1802, configured to: if the first indication information indicates that the first resource is a dynamically scheduled resource, according to the The first indication information determines that the first resource is a dynamically scheduled resource; or, the processing module 1802, configured to determine that the first resource is a configuration authorized resource according to the first indication information, includes: a processing module 1802, configured to: Indicate that the first resource is a configuration authorized resource, and determine that the first resource is a configuration authorized resource according to the first indication information.

Optionally, the processing module 1802 is further configured to determine that the first HARQ feedback needs to be sent if the first indication information indicates that the first resource is a dynamically scheduled resource; or, the processing module 1802 is further configured to determine if the first indication information indicates the The first resource is a configuration authorized resource, and it is determined not to send the first HARQ feedback.

Optionally, the transceiver module 1801 is further configured to receive second indication information from the network device, where the second indication information indicates to send the first HARQ feedback, or the second indication information indicates not to send the first HARQ feedback .

Optionally, the processing module 1802, configured to determine that the first resource is a dynamically scheduled resource according to the first indication information, includes: a processing module 1802, configured to send the first HARQ feedback according to the first indication information if the first indication information indicates The information determines that the first resource is a dynamically scheduled resource; or, the processing module 1802, configured to determine that the first resource is a configuration authorized resource according to the first indication information, includes: a processing module 1802, configured to not send if the first indication information indicates The first HARQ feedback determines that the first resource is a configured authorized resource according to the first indication information.

Optionally, the first indication information includes a configuration authorization configuration. The processing module 1802 is configured to determine that the first resource is a dynamically scheduled resource according to the first indication information, and includes: a processing module 1802, configured to include configuration authorization if the configuration authorization configuration includes The timer determines that the first resource is a dynamically scheduled resource according to the first indication information; or, the processing module 1802 is configured to determine that the first resource is a configuration authorized resource according to the first indication information, including: a processing module 1802, configured to If the configuration authorization configuration does not include the configuration authorization timer, it is determined according to the first indication information that the first resource is a configuration authorization resource.

Optionally, the first resource is a configuration authorization resource, and the processing module 1802 is also used for determining to transmit new data if the configuration authorization timer expires or stops; or, the processing module 1802 is also used for if the configuration authorization timer expires or stops To confirm the transmission and retransmission of data.

Optionally, the processing module 1802 is also used to determine to transmit new data if the configuration authorization timer expires or stops, including: the processing module 1802, is also used to determine if the configuration authorization timer expires or stops and the transceiver module 1801 does not receive The second HARQ feedback from the second terminal device determines to transmit new data. Or, the configuration authorization timer expires or stops, and the processing module 1802 is also used to determine the transmission of retransmitted data, including: the processing module 1802, is also used to if the configuration authorization timer expires or stops and the transceiver module 1801 does not receive the data The dynamic scheduling resource information of the network equipment determines the transmission and retransmission data.

Among them, all relevant content of each step involved in the above method embodiment can be cited in the function description of the corresponding function module, and will not be repeated here.

In this embodiment, the first terminal device 180 is presented in the form of dividing various functional modules in an integrated manner. The "module" here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions. In a simple embodiment, those skilled in the art can imagine that the first terminal device 180 may take the form of the first terminal device shown in FIG. 3.

For example, the processor 201 in the first terminal device shown in FIG. 3 may invoke the computer execution instruction stored in the memory 202 to make the first terminal device execute the communication method in the foregoing method embodiment.

Specifically, the functions/implementation process of the transceiver module 1801 and the processing module 1802 in FIG. 18 may be implemented by the processor 201 in the first terminal device shown in FIG. 3 calling a computer execution instruction stored in the memory 202. Alternatively, the function/implementation process of the processing module 1802 in FIG. 18 can be implemented by the processor 201 in the first terminal device shown in FIG. 3 calling the computer execution instructions stored in the memory 202, and the transceiver module 1801 in FIG. The function/implementation process can be implemented by the transceiver 203 in the first terminal device shown in FIG. 3.

Since the first terminal device 180 provided in this embodiment can execute the above-mentioned communication method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, which will not be repeated here.

Or, for example, take the communication device as the network device in the foregoing method embodiment as an example. FIG. 19 shows a schematic structural diagram of a network device 190. The network device 190 includes a transceiver module 1901 and a processing module 1902. The transceiver module 1901 may also be referred to as a transceiver unit to implement sending and/or receiving functions, and may be, for example, a transceiver circuit, transceiver, transceiver, or communication interface.

In a possible implementation manner, the processing module 1902 is configured to determine whether the first terminal device needs to send the first HARQ feedback; the transceiver module 1901 is configured to send first indication information to the first terminal device, the first indication information Used by the first terminal device to determine whether the first HARQ feedback needs to be sent.

Optionally, the processing module 1902 is further configured to determine that the first resource is a dynamically scheduled resource, or the processing module 1902 is further configured to determine that the first resource is a configuration authorized resource, and the first resource is a retransmission resource of the first terminal device The transceiver module 1901 is also configured to send second indication information to the first terminal device, the second indication information is used for the first terminal device to determine that the first resource is a dynamically scheduled resource, or the second indication information is used for the first The terminal device determines that the first resource is a configuration authorized resource.

Optionally, the transceiver module 1901 is further configured to send third indication information to the first terminal device, where the third indication information is used for the first terminal device to stop configuring the authorization timer, where the configuration authorization timer and the second HARQ feedback corresponds, and the second HARQ feedback corresponds to the first HARQ feedback.

Optionally, the transceiver module 1901 is further configured to send fourth indication information to the first terminal device, where the third indication information is used for the first terminal device to release the HARQ process, where the HARQ process corresponds to the second HARQ feedback, The second HARQ feedback corresponds to the first HARQ feedback.

In another possible implementation manner, the processing module 1902 is configured to determine that the first resource is a dynamic resource, or, the processing module 1902 is configured to determine that the first resource is a configuration authorized resource; the transceiver module 1901 is configured to report to the first resource The terminal device sends first indication information, where the first indication information is used by the first terminal device to determine the type of the first resource, the first indication information indicates that the first resource is a dynamically scheduled resource, or the first indication information indicates the first The resource is a configuration authorized resource.

Optionally, the processing module 1902 is further configured to determine whether the first terminal device needs to send the first HARQ feedback to the network device; the transceiver module 1901 is further configured to send second indication information to the first terminal device, the second indication information It is used by the first terminal device to determine whether the first HARQ feedback needs to be sent to the network device.

In this embodiment, the network device 190 is presented in the form of dividing various functional modules in an integrated manner. The "module" here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions. In a simple embodiment, those skilled in the art can imagine that the network device 190 may take the form of the network device shown in FIG. 3.

For example, the processor 401 in the network device shown in FIG. 3 may invoke the computer execution instructions stored in the memory 402 to make the network device execute the communication method in the foregoing method embodiment.

Specifically, the functions/implementation process of the transceiver module 1901 and the processing module 1902 in FIG. 19 can be implemented by the processor 401 in the network device shown in FIG. 3 calling the computer execution instructions stored in the memory 402. Alternatively, the function/implementation process of the processing module 1902 in FIG. 19 can be implemented by the processor 401 in the network device shown in FIG. 3 calling the computer execution instructions stored in the memory 402, The implementation process can be implemented by the transceiver 403 in the network device shown in FIG. 3.

Since the network device 190 provided in this embodiment can execute the above-mentioned communication method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, and will not be repeated here.

Optionally, an embodiment of the present application further provides a communication device (for example, the communication device may be a chip or a chip system), and the communication device includes a processor for implementing the method in any of the foregoing method embodiments. In a possible design, the communication device further includes a memory. The memory is used to store necessary program instructions and data, and the processor can call the program code stored in the memory to instruct the communication device to execute the method in any of the foregoing method embodiments. Of course, the memory may not be in the communication device. When the communication device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiment of the present application.

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

Although the present application is described with reference to various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and understand by viewing the drawings, the disclosure, and the appended claims. Implement other changes of the disclosed embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude multiple. A single processor or other unit may implement several functions listed in the claims. Certain measures are described in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the application has been described in combination with specific features and embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely exemplary descriptions of the application defined by the appended claims, and are deemed to have covered any and all modifications, changes, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these modifications and variations.

Claims

A communication method, characterized in that the method includes:

The first terminal device receives the first indication information from the network device;

The first terminal device determines, according to the first indication information, that it is necessary to send the first hybrid automatic repeat request HARQ feedback; or,

The first terminal device determines not to send the first HARQ feedback according to the first indication information.
The method according to claim 1, wherein the first terminal device determining, according to the first indication information, that the first HARQ feedback needs to be sent, comprises:

The first indication information indicates to send the first HARQ feedback, and the first terminal device determines that the first HARQ feedback needs to be sent; or,

The first terminal device determining not to send the first HARQ feedback according to the first indication information includes:

The first indication information indicates that the first HARQ feedback is not to be sent, and the first terminal device determines not to send the first HARQ feedback.
The method of claim 2, wherein the method further comprises:

The first indication information indicates to send the first HARQ feedback, and the first terminal determines that the first resource is a dynamically scheduled resource; or,

The first indication information indicates that the first HARQ feedback is not to be sent, and the first terminal device determines that the first resource is a configuration authorized resource, where the first resource is a retransmission resource of the first terminal device.
The method according to claim 1 or 2, wherein the method further comprises:

Receiving, by the first terminal device, second indication information from the network device, the second indication information indicating that the first resource is a dynamically scheduled resource, or the second indication information indicating that the first resource is a configuration authorized resource; Wherein, the first resource is a retransmission resource of the first terminal device.
The method according to claim 1, wherein the first terminal device determining, according to the first indication information, that the first HARQ feedback needs to be sent, comprises:

The first indication information indicates that the first resource is a dynamically scheduled resource, and the first terminal device determines that the first HARQ feedback needs to be sent; or,

The first terminal device determining not to send the first HARQ feedback according to the first indication information includes:

The first indication information indicates that the first resource is a configured authorized resource, and the first terminal device determines not to send the first HARQ feedback, where the first resource is a retransmission resource of the first terminal device.
The method according to claim 1, wherein the first indication information includes a configuration authorization configuration, and the first terminal device determines according to the first indication information that it is necessary to send the first HARQ feedback, comprising:

The configuration authorization configuration includes configuration authorization timer information, and the first terminal device determines that the first HARQ feedback needs to be sent; or,

The first terminal device determining not to send the first HARQ feedback according to the first indication information includes:

The configuration authorization configuration does not include the configuration authorization timer information, and the first terminal device determines not to send the first HARQ feedback.
The method according to any one of claims 3-5, wherein the first resource is a configuration authorized resource, and the method further comprises:

The second HARQ feedback is an acknowledgement ACK, the first terminal device determines to transmit new data at a first transmission opportunity, and the second HARQ feedback corresponds to the first HARQ feedback;

Wherein, the first transmission timing is the first repeated transmission timing among the unused repeated transmission timings in the first period; or,

The first transmission timing includes one or more transmission timings among the unused repeated transmission timings in the first period determined according to a preset rule; or,

The first transmission timing is the first transmission timing of the M-th period after the first period, and M is a positive integer;

Wherein, the first period is the period in which the transmission timing corresponding to the second HARQ feedback is located.
The method according to any one of claims 3-5, wherein the first resource is a configuration authorized resource, and the method further comprises:

The second HARQ feedback is a non-acknowledged NACK, the first terminal device determines to retransmit data at a second transmission opportunity, and the second HARQ feedback corresponds to the first HARQ feedback;

Wherein, the second transmission timing includes part or all of the unused retransmission timing in the first cycle; or,

The second transmission timing includes unused repeated transmission timings in the first period and part or all transmission timings in the N periods after the first period; or,

The second transmission timing is the first transmission timing of the M-th period after the first period; or,

The second transmission opportunity includes part or all of the transmission opportunities in P cycles after the first cycle;

Wherein, the first period is the period of the transmission timing corresponding to the second HARQ feedback, and N, M, and P are positive integers.
The method according to any one of claims 3-5, wherein the first resource is a configuration authorized resource, and the method further comprises:

The configuration authorization timer expires or stops, and the first terminal device determines to transmit new data; or,

The configuration grant timer expires or stops, the first terminal device determines to transmit retransmission data, where the configuration grant timer corresponds to a second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback.
The method according to claim 9, wherein:

The configuration authorization timer expires or stops, and the first terminal device determines to transmit new data, including:

The configuration authorization timer expires or stops, and the first terminal device does not receive the second HARQ feedback from the second terminal device, and the first terminal device determines to transmit new data; or,

The configuration authorization timer expires or stops, and the first terminal device determines to transmit the retransmitted data, including:

When the configuration authorization timer expires or stops, and the first terminal device does not receive the information of the dynamic scheduling resource coming from the network device, the first terminal device determines to transmit the retransmission data.
The method according to any one of claims 3-5, wherein the method further comprises:

The first resource is a configuration authorization resource, and the first terminal device stops configuring an authorization timer; or,

The first resource is a dynamic scheduling resource, and the first terminal device restarts a configuration grant timer, where the configuration grant timer corresponds to a second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback correspond.
The method according to any one of claims 1-8, wherein the method further comprises:

The second HARQ feedback is ACK, and the first terminal device stops configuring the authorization timer; or,

The second HARQ feedback is NACK, the first terminal device starts or restarts the configuration grant timer, where the second HARQ feedback corresponds to the first HARQ feedback, and the configuration grant timer corresponds to the second HARQ Feedback correspondence.
The method according to any one of claims 1-8, wherein the method further comprises:

Receiving, by the first terminal device, third instruction information from the network device;

The first terminal device stops configuring the grant timer according to the third indication information, where the configuration grant timer corresponds to the second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback.
The method according to any one of claims 1-13, wherein the method further comprises:

Receiving, by the first terminal device, fourth instruction information from the network device;

The first terminal device releases the HARQ process according to the fourth indication information, the HARQ process corresponds to the second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback.
A communication method, characterized in that the method includes:

The network device determines whether the first terminal device needs to send the first hybrid automatic repeat request HARQ feedback;

The network device sends first indication information to the first terminal device, where the first indication information is used by the first terminal device to determine whether to send the first HARQ feedback.
The method according to claim 15, wherein if the network device determines that the first terminal device needs to send the first HARQ feedback, the first indication information indicates to send the first HARQ feedback; or,

If the network device determines that the first terminal device does not need to send the first HARQ feedback, the first indication information indicates that the first HARQ feedback is not to be sent.
The method according to claim 15 or 16, wherein the method further comprises:

The network device determines that the first resource is a dynamic scheduling resource, or the network device determines that the first resource is a configuration authorized resource, and the first resource is a retransmission resource of the first terminal device;

The network device sends second indication information to the first terminal device, where the second indication information is used by the first terminal device to determine that the first resource is a dynamically scheduled resource, or the second indication information Used by the first terminal device to determine that the first resource is a configuration authorized resource.
The method according to claim 15, wherein if the network device determines that the first terminal device needs to send the first HARQ feedback, the first indication information indicates that the first resource is a dynamically scheduled resource; or,

If the network device determines that the first terminal device does not need to send the first HARQ feedback, the first indication information indicates that the first resource is a configured authorized resource.
The method according to claim 15, wherein the first indication information includes a configuration authorization configuration, and if the network device determines that the first terminal device needs to send the first HARQ feedback, the configuration authorization configuration includes Configure the authorization timer information; or,

If the network device determines that the first terminal device does not need to send the first HARQ feedback, the configuration authorization configuration does not include the configuration authorization timer information.
The method according to any one of claims 15-19, wherein the method further comprises:

The network device sends third indication information to the first terminal device, where the third indication information is used for the first terminal device to stop configuring the authorization timer, where the configuration authorization timer is the same as the second HARQ feedback Correspondingly, the second HARQ feedback corresponds to the first HARQ feedback.
The method according to any one of claims 15-20, wherein the method further comprises:

The network device sends fourth indication information to the first terminal device, where the fourth indication information is used by the first terminal device to release the HARQ process, where the HARQ process corresponds to the second HARQ feedback, and the The second HARQ feedback corresponds to the first HARQ feedback.
A communication device, characterized in that the communication device includes: a transceiver module and a processing module;

The transceiver module is configured to receive first indication information from a network device;

The processing module is configured to determine, according to the first indication information, that the first hybrid automatic repeat request HARQ feedback needs to be sent; or,

The processing module is configured to determine not to send the first HARQ feedback according to the first indication information.
The communication device according to claim 22, wherein the processing module is configured to determine that a first HARQ feedback needs to be sent according to the first indication information, comprising:

The processing module is configured to determine that the first HARQ feedback needs to be sent according to the first indication information if the first indication information indicates to send the first HARQ feedback; or,

The processing module, configured to determine not to send the first HARQ feedback according to the first indication information, includes:

The processing module is configured to determine not to send the first HARQ feedback according to the first indication information if the first indication information indicates not to send the first HARQ feedback.
The communication device according to claim 23, wherein the processing module is further configured to determine that the first resource is a dynamic scheduling resource if the first indication information indicates to send the first HARQ feedback; or,

The processing module is further configured to determine that the first resource is a configured authorized resource if the first indication information indicates that the first HARQ feedback is not to be sent, where the first resource is a retransmission resource of the communication device.
The communication device according to claim 22 or 23, wherein the transceiver module is further configured to receive second indication information from the network device, the second indication information indicating that the first resource is a dynamically scheduled resource Or, the second indication information indicates that the first resource is a configuration authorized resource; wherein the first resource is a retransmission resource of the communication device.
The communication device according to claim 22, wherein the processing module is configured to determine that the first HARQ feedback needs to be sent according to the first indication information, comprising:

The processing module is configured to, if the first indication information indicates that the first resource is a dynamically scheduled resource, determine according to the first indication information that the first HARQ feedback needs to be sent; or,

The processing module, configured to determine not to send the first HARQ feedback according to the first indication information, includes:

The processing module is configured to determine not to send the first HARQ feedback according to the first indication information if the first indication information indicates that the first resource is a configured authorized resource, where the first resource is the The retransmission resources of the communication device.
The communication device according to claim 22, wherein the first indication information includes a configuration authorization configuration, and the processing module is configured to determine that the first HARQ feedback needs to be sent according to the first indication information, comprising:

The processing module is configured to determine, according to the first indication information, that the first HARQ feedback needs to be sent if the configuration authorization configuration includes the configuration authorization timer information; or,

The processing module, configured to determine not to send the first HARQ feedback according to the first indication information, includes:

The processing module is configured to determine not to send the first HARQ feedback according to the first indication information if the configuration authorization configuration does not include the configuration authorization timer information.
The communication device according to any one of claims 24-26, wherein the first resource is a configuration authorized resource;

The processing module is further configured to determine to transmit new data at a first transmission opportunity if the second HARQ feedback is an acknowledgement ACK, and the second HARQ feedback corresponds to the first HARQ feedback;

Wherein, the first transmission timing is the first repeated transmission timing among the unused repeated transmission timings in the first period; or,

The first transmission timing includes one or more transmission timings among the unused repeated transmission timings in the first period determined according to a preset rule; or,

The first transmission timing is the first transmission timing of the M-th period after the first period, and M is a positive integer;

Wherein, the first period is the period in which the transmission timing corresponding to the second HARQ feedback is located.
The communication device according to any one of claims 24-26, wherein the first resource is a configuration authorized resource;

The processing module is further configured to determine to retransmit data at a second transmission opportunity if the second HARQ feedback is an unacknowledged NACK, and the second HARQ feedback corresponds to the first HARQ feedback;

Wherein, the second transmission timing includes part or all of the unused retransmission timing in the first cycle; or,

The second transmission timing includes unused repeated transmission timings in the first period and part or all transmission timings in the N periods after the first period; or,

The second transmission timing is the first transmission timing of the M-th period after the first period; or,

The second transmission opportunity includes part or all of the transmission opportunities in P cycles after the first cycle;

Wherein, the first period is the period of the transmission timing corresponding to the second HARQ feedback, and N, M, and P are positive integers.
The communication device according to any one of claims 24-26, wherein the first resource is a configuration authorized resource;

The processing module is further configured to determine to transmit new data if the configuration authorization timer expires or stops; or,

The processing module is further configured to determine to transmit retransmission data if the configured grant timer expires or stops, wherein the configured grant timer corresponds to a second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ Feedback correspondence.
The communication device according to claim 30, wherein the processing module is further configured to determine to transmit new data if the configuration authorization timer expires or stops, comprising:

The processing module is further configured to determine to transmit new data if the configuration authorization timer expires or stops and the communication device does not receive the second HARQ feedback from the second terminal device; or,

The processing module is further configured to determine to transmit the retransmitted data if the configured authorization timer expires or stops, including:

The processing module is further configured to determine to transmit the retransmission data if the configuration authorization timer expires or stops, and the communication device does not receive the information of the dynamic scheduling resource from the network device.
The communication device according to any one of claims 24-26, wherein the processing module is further configured to stop configuring an authorization timer if the first resource is a configuration authorization resource; or,

The processing module is further configured to restart a configuration grant timer if the first resource is a dynamically scheduled resource, wherein the configuration grant timer corresponds to a second HARQ feedback, and the second HARQ feedback corresponds to the second HARQ feedback. One HARQ feedback correspondence.
The communication device according to any one of claims 22-29, wherein the processing module is further configured to stop configuring the grant timer if the second HARQ feedback is ACK; or,

The processing module is further configured to if the second HARQ feedback is NACK, start or restart the configuration grant timer, wherein the second HARQ feedback corresponds to the first HARQ feedback, and the configuration grant timer corresponds to the The second HARQ feedback corresponds.
The communication device according to any one of claims 22-29, wherein the transceiver module is further configured to receive third indication information from the network device;

The processing module is further configured to stop configuring a grant timer according to the third indication information, where the configuration grant timer corresponds to a second HARQ feedback, and the second HARQ feedback is the same as the first HARQ feedback correspond.
The communication device according to any one of claims 22-34, wherein the transceiver module is further configured to receive fourth indication information from the network device;

The processing module is further configured to release an HARQ process according to the fourth indication information, the HARQ process corresponding to a second HARQ feedback, and the second HARQ feedback corresponding to the first HARQ feedback.
A communication device, characterized in that the communication device includes: a transceiver module and a processing module;

The processing module is configured to determine whether the first terminal device needs to send the first hybrid automatic repeat request HARQ feedback;

The transceiver module is configured to send first indication information to the first terminal device, where the first indication information is used by the first terminal device to determine whether the first HARQ feedback needs to be sent.
The communication device according to claim 36, wherein if the processing module determines that the first terminal device needs to send the first HARQ feedback, the first indication information indicates to send the first HARQ feedback; or,

If the processing module determines that the first terminal device does not need to send the first HARQ feedback, the first indication information indicates that the first HARQ feedback is not to be sent.
The communication device according to claim 36 or 37, wherein the processing module is further configured to determine that the first resource is a dynamically scheduled resource, or the processing module is further configured to determine that the first resource is a configuration authorization Resource, the first resource is a retransmission resource of the first terminal device;

The transceiver module is further configured to send second indication information to the first terminal device, where the second indication information is used by the first terminal device to determine that the first resource is a dynamically scheduled resource, or the The second indication information is used by the first terminal device to determine that the first resource is a configuration authorized resource.
The communication device according to claim 36, wherein if the processing module determines that the first terminal device needs to send the first HARQ feedback, the first indication information indicates that the first resource is a dynamically scheduled resource; or,

If the processing module determines that the first terminal device does not need to send the first HARQ feedback, the first indication information indicates that the first resource is a configured authorized resource.
The communication device according to claim 36, wherein the first indication information includes a configuration authorization configuration, and if the processing module determines that the first terminal device needs to send the first HARQ feedback, the configuration authorization configuration is Including configuration authorization timer information; or,

If the processing module determines that the first terminal device does not need to send the first HARQ feedback, the configuration authorization configuration does not include the configuration authorization timer information.
The communication device according to any one of claims 36-40, wherein the transceiver module is further configured to send third instruction information to the first terminal device, and the third instruction information is used for the The first terminal device stops configuring the grant timer, where the configuration grant timer corresponds to the second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback.
The communication device according to any one of claims 36-41, wherein the transceiver module is further configured to send fourth indication information to the first terminal device, and the fourth indication information is used for the The first terminal device releases the HARQ process, where the HARQ process corresponds to a second HARQ feedback, and the second HARQ feedback corresponds to the first HARQ feedback.
A communication device, characterized in that the communication device includes: a processor;

The processor is configured to read computer-executable instructions in the memory, and execute the computer-executable instructions, so that the communication device executes the method according to any one of claims 1-14, or causes the communication device Perform the method according to any one of claims 15-21.
A communication device, characterized in that the communication device includes: a processor and a memory;

The memory is used to store computer-executable instructions. When the processor executes the computer-executed instructions, the communication device is caused to execute the method according to any one of claims 1-14, or the communication The device executes the method according to any one of claims 15-21.
A computer-readable storage medium, characterized by comprising instructions, which when running on a communication device, causes the communication device to execute the method according to any one of claims 1-14, or causes the The communication device executes the method according to any one of claims 15-21.
A computer program product, characterized in that when the computer program product runs on a communication device, the communication device is caused to execute the method according to any one of claims 1-14, or the communication device is caused to The device executes the method according to any one of claims 15-21.
A chip, characterized in that it comprises:

Memory, used to store computer programs;

The processor is configured to call and run the computer program from the memory, so that the device installed with the chip executes the method according to any one of claims 1-14, or causes the device installed with the chip The device executes the method according to any one of claims 15-21.