WO2021062774A1

WO2021062774A1 - Sidelink resource processing method and device, and system

Info

Publication number: WO2021062774A1
Application number: PCT/CN2019/109698
Authority: WO
Inventors: 王源泉; 苏宏家; 卢磊; 郭文婷; 董蕾
Original assignee: 华为技术有限公司
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-04-08
Also published as: CN114424596A

Abstract

Embodiments of the present application provide a sidelink resource processing method and device, and a system, which relate to the field of wireless communication technology, and are used to process link resources in a sidelink. The method comprises: a second terminal determining that a transport block from a first terminal is successfully received, the transport block being a transport block transmitted by the first terminal on first sidelink resources; and the second terminal sending a resource selection indication to the first terminal, the resource selection indication being used to indicate a selection result, by the second terminal, of one or more second sidelink resources for retransmitting a transport block. The present invention can be applied to the Internet of vehicles, such as V2X, LTE-V, and V2V, or can be applied to the fields of D2D, intelligent driving, intelligent connected vehicle, etc.

Description

Method, device and system for processing side link resources

Technical field

This application relates to the field of wireless communication technologies, and in particular to a method, device, and system for processing side link resources.

Background technique

To meet people's demand for high-speed data transmission, Vehicle-To-Everything (V2X) is proposed in the Long Term Evolution (LTE) network. V2X is based on Device-to-Device (D2D) communication technology, but has higher latency requirements than D2D. Refer to Figure 1. V2X includes vehicle-to-vehicle communication (Vehicle to Vehicle, V2V) , Vehicle to pedestrian communication (Vehicle to Pedestrian, V2P), vehicle to infrastructure communication (Vehicle to Infrastructure, V2I), vehicle to network communication (Vehicle to Network, V2N). Therefore, V2X is the key technology of the future intelligent transportation system. In order to ensure the reliability of V2X communication, how to realize the reasonable allocation of resources is very important.

Under the LTE network, V2X supports broadcast transmission, that is, the sender terminal can send services to the receiver terminal on the side link in a broadcast mode, and the receiver terminal does not need to feed back the reception or not information to the sender terminal. Therefore, In the LTE network, V2X only supports blind retransmission. In the blind retransmission scenario, when the sender terminal transmits for the first time, it will use sidelink control information (SCI) to indicate whether to retransmit. When the SCI indicates retransmission, the sender terminal will The retransmission resources are reserved in the SCI, and therefore, the case where the retransmission resources are reserved and not used is not involved in LTE-V2X.

In the New Radio (NR) network, V2X not only supports blind retransmission, but also supports feedback-based retransmission, that is, after the first transmission, if the sender terminal receives the data from the receiver terminal A negative acknowledgement (Negative acknowledgement, NACK) is retransmitted on the reserved retransmission resource until the acknowledgement (ACK) information is received. In NR-V2X, the sender terminal still reserves the retransmission resource through SCI during the initial transmission. If the response message from the receiver terminal is received before the reserved retransmission resource is used up, there will be a reserved retransmission resource. Without using the situation.

In the prior art, if the sender terminal receives the response information and the reserved retransmission resources are left, the remaining retransmission resources will be released. One or more terminals including the receiver terminal can compete to use these The released retransmission resources, however, when one or more terminals compete for the retransmission resources, a time delay will be introduced due to the resource listening process, so that part of the released remaining resources cannot be reused, thus causing a waste of resources.

Summary of the invention

The present application provides a method, device and system for processing side-link resources to improve the utilization rate of side-link resources.

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

In the first aspect, an embodiment of the present application provides a method for processing side link resources, the method includes: the second terminal determines that a transmission block from the first terminal is successfully received; the transmission block is the first terminal on the first side The transmission block transmitted on the uplink resource; the second terminal sends confirmation information and a resource selection indication to the first terminal, the confirmation information is used to indicate that the second terminal successfully receives the transmission block, and the resource selection indication is used to indicate the first terminal The selection result of one or more second side uplink resources used by the two terminals for retransmission of the transport block.

The embodiment of the application provides a method for processing sidelink resources. After the second terminal successfully receives the transmission block from the first terminal, the second terminal can inform the first terminal through the confirmation message that the second terminal has successfully received the transmission. Block, and can indicate the selection result of the second terminal on one or more second side link resources for retransmission of the transmission block through the resource selection indication. This can increase the priority for the second terminal to select side link resources from one or more second side link resources, that is, the second terminal can prioritize whether to select from one or more second side link resources The selection of side-link resources, compared with the prior art, avoids the delay caused by the interception process when multiple terminals compete for the selection of side-link resources, which improves the utilization of side-link resources, and at the same time Reduce the probability of occurrence of side link resource collisions.

In a possible implementation manner, the resource selection indication includes a bit sequence, and the bit sequence is used to indicate a selection result of the second terminal on one or more second side link resources. Different bit sequences can indicate different selection results, which not only facilitates the indication of selection results, but also reduces transmission content and reduces resource consumption caused by transmission.

In a possible implementation manner, the bit sequence is specifically used to indicate the information of the side link resource selected by the second terminal from the one or more second side link resources.

In a possible implementation manner, the value of each bit in the bit sequence is the first indicator, and the side link resource selected by the second terminal is all of the one or more second side link resources. Two-side uplink resources. It can be determined by the first indicator that one or more second side link resources are all selected by the second terminal.

In a possible implementation manner, the value of the bit sequence includes at least one first indicator and at least one second indicator, and the bit sequence is specifically used to instruct the second terminal to select from one or more second side uplink resources Part of the side link resource information. It can be determined by the first indicator and the second indicator that one or more second side link resource parts are selected by the second terminal.

In a possible implementation manner, the method further includes: the second terminal sends a first indication to the first terminal on the side link, and the first indication is used to indicate that the side link resource selected by the second terminal is The proportion of the side link resources to which they belong. Through the first instruction, the second terminal can flexibly select the size of the resource according to the size of the service, thereby avoiding resource waste.

In a possible implementation manner, the bit sequence is specifically used to indicate that the second terminal does not select the side link resource from the one or more second side link resources.

In a possible implementation manner, the value of each bit in the bit sequence is the second indicator. It can be determined through the second indicator that one or more second side link resources are not selected by the second terminal.

In a second aspect, an embodiment of the present application provides a method for processing sidelink resources. The method includes: a terminal obtains a resource selection indication from a second terminal, and the resource selection indication is used to instruct the second terminal pair to be used for retransmission transmission. The selection result of one or more second side link resources of the block; the terminal includes the first terminal and/or the third terminal, and the transmission block is transmitted by the first terminal to the second terminal on the first side link resource Transmission block; the terminal determines the selection result of one or more second side uplink resources by the second terminal according to the resource selection instruction.

The embodiment of the present application provides a method for processing side link resources. The terminal can determine the selection result of one or more second side link resources by the second terminal according to the resource selection instruction. The second terminal has the priority of selecting side link resources from one or more second side link resources, that is, the second terminal can prioritize whether to select side link resources from one or more second side link resources. Compared with the prior art, it avoids the delay caused by the interception process when multiple terminals compete for the selection of side-link resources. This improves the utilization rate of side-link resources and reduces Probability of side link resource collision.

In a possible implementation manner, when the terminal is the first terminal, the method further includes: the first terminal receives confirmation information from the second terminal, where the confirmation information is used to indicate that the second terminal successfully receives the transmission block.

In a possible implementation manner, the terminal determines the selection result of the second terminal for one or more second side link resources according to the resource selection indication, including: the terminal determines that the second terminal has not selected one or more second side link resources according to the bit sequence. Select the side link resource from among the second side link resources.

In a possible implementation manner, the terminal determines according to the bit sequence that the second terminal does not select the side link resource from the one or more second side link resources, including: the value of each bit in the bit sequence is the first In the second indicator, the terminal determines that the second terminal has not selected the side uplink resource from the one or more second side uplink resources. It can be determined through the second indicator that one or more second side link resources are not selected by the second terminal.

In a possible implementation manner, the bit sequence is specifically used to indicate the information of the side link resource selected by the second terminal from one or more second side link resources, and the terminal confirms the second terminal according to the resource selection instruction. The selection result of the second terminal on the one or more second side link resources includes: the terminal determines the side link resource information selected by the second terminal from the one or more second side link resources according to the bit sequence .

In a possible implementation manner, the terminal determines the side link resource information selected by the second terminal from the one or more second side link resources according to the bit sequence, including: the value of each bit in the bit sequence Is the first indicator, the terminal determines that the side link resource selected by the second terminal from the one or more second side link resources includes all of the one or more second side link resources Link resources. It can be determined by the first indicator that one or more second side link resources are all selected by the second terminal.

In a possible implementation manner, the terminal determines the side link resource information selected by the second terminal from the one or more second side link resources according to the bit sequence, including: the value of the bit sequence includes at least one first side link resource. An indicator and at least one second indicator, and the terminal determines, according to the bit sequence, a part of the side link resource selected by the second terminal from the one or more second side link resources. It can be determined by the first indicator and the second indicator that one or more second side link resource parts are selected by the second terminal.

In a possible implementation manner, the method further includes: the terminal receives a first indication from the second terminal, where the first indication is used to indicate that the side link resource selected by the second terminal is in the side link to which it belongs. The proportion of resources. Through the first instruction, the second terminal can flexibly select the size of the resource according to the size of the service, thereby avoiding resource waste.

In a third aspect, an embodiment of the present application provides a method for processing sidelink resources. The method includes: a second terminal determines that a transmission block from a first terminal is successfully received; and the transmission block indicates that the first terminal is on the first side. The transmission block transmitted on the uplink resource; the second terminal sends a resource selection indication to the first terminal, and the resource selection indication is used to instruct the second terminal to check one or more second side uplinks for retransmission of the transmission block. The result of resource selection.

In a possible implementation manner, the method further includes: the second terminal sends confirmation information to the first terminal.

For the description of the resource selection indication in the third aspect, reference may be made to the related description in the first aspect, which will not be repeated here.

In the fourth aspect, an embodiment of the present application provides an apparatus for processing side link resources, which can implement the method in any possible implementation manner of the first aspect or the first aspect/third aspect or the third aspect. Therefore, The beneficial effects in any possible implementation manner of the first aspect or the first/third aspect or the third aspect can also be achieved. The side link resource processing device may be a second terminal, or a device that can support the second terminal to implement the method in the first aspect or the first aspect/third aspect or any possible implementation manner of the third aspect , For example, applied to the chip in the second terminal. The device can implement the above method by software, hardware, or by hardware executing corresponding software.

In an example, an embodiment of the present application provides an apparatus for processing side link resources, including: a determining unit, configured to determine that a transmission block from a first terminal is successfully received; the transmission block is that the first terminal is in the first side row The transmission block transmitted on the link resource; the communication unit is used to send a resource selection indication to the first terminal, and the resource selection indication is used to instruct the device to retransmit the transmission block for one or more second side uplink resources The result of the selection. At the same time, the third terminal can also listen to the resource indication information.

In a possible implementation manner, after determining that the transmission block from the first terminal is successfully received, the communication unit is further configured to send confirmation information to the first terminal, and the confirmation information is used to indicate that the device successfully receives the transmission block.

In a possible implementation manner, the resource selection indication includes a bit sequence, and the bit sequence is specifically used to indicate the information of the side link resource selected by the apparatus from the one or more second side link resources.

In a possible implementation manner, the value of each bit in the bit sequence is the first indicator, and the side link resource selected by the device is all the second side link resources among the one or more second side link resources. Side link resources.

In a possible implementation manner, the value of the bit sequence includes at least one first indicator and at least one second indicator, and the bit sequence is specifically used to instruct the device to select from one or more second side uplink resources. Part of the side link resource information.

In a possible implementation manner, the communication unit is further configured to send a first indication to the first terminal, and the first indication is used to indicate that the side link resource selected by the device is in the side link resource to which it belongs. proportion.

In a possible implementation manner, the resource selection indication includes a bit sequence, and the bit sequence is specifically used to indicate that the device does not select a side link resource from the one or more second side link resources.

In a possible implementation manner, the value of each bit in the bit sequence is the second indicator.

In another example, an embodiment of the present application provides an apparatus for processing side link resources. The apparatus may include: a communication unit and a processing unit. When the device is the second terminal, the communication unit may be a communication interface or an interface circuit. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit, so that the second device implements the first aspect or the method described in any one of the possible implementation manners of the first aspect. When the device is a chip in the second terminal, the processing unit may be a processor, and the communication unit may be collectively referred to as a communication interface.

Optionally, the processor, the communication interface and the memory are coupled with each other.

In the fifth aspect, an embodiment of the present application provides an apparatus for processing side link resources. The apparatus can implement the second aspect or any possible implementation of the second aspect, and therefore can also implement the second aspect or the first aspect. Two aspects are the beneficial effects in any possible implementation manner. The device for processing side link resources may be a terminal, or a device that can support the terminal to implement the second aspect or any possible implementation manner of the second aspect, for example, a chip applied to the terminal. The device can implement the above method by software, hardware, or by hardware executing corresponding software.

As an example, an embodiment of the present application provides an apparatus for sidelink resource processing, including: a communication unit, configured to obtain a resource selection instruction from a second terminal, and the resource selection instruction is used to instruct the second terminal The transmission block transmits the selection result of one or more second side uplink resources; the transmission block is the transmission block that the communication unit transmits to the second terminal on the first side uplink resource; the processing unit is used to select according to the resource Instruct to determine the result of the second terminal's selection of one or more second side uplink resources.

In a possible implementation manner, the communication unit is further configured to receive confirmation information from the second terminal, where the confirmation information is used to indicate that the second terminal successfully receives the transmission block.

In a possible implementation manner, the resource selection indication includes a bit sequence, and the bit sequence is specifically used to indicate that the second terminal does not select a side link resource from one or more second side link resources, and correspondingly, processing The unit is specifically configured to determine, according to the bit sequence, that the second terminal does not select the side link resource from the one or more second side link resources.

In a possible implementation manner, the value of each bit in the bit sequence is the second indicator, and the processing unit determines that the second terminal does not select the side link resource from the one or more second side link resources.

In a possible implementation manner, the resource selection indication includes a bit sequence, and the bit sequence is specifically used to instruct the second terminal to select side link resource information from one or more second side link resources, and process The unit is specifically configured to determine the side link resource information selected by the second terminal from the one or more second side link resources according to the bit sequence.

In a possible implementation manner, the value of each bit in the bit sequence is the first indicator, and the processing unit determines that the side link resource selected by the second terminal from the one or more second side link resources includes All of the one or more second side uplink resources; or, the value of the bit sequence includes at least one first indicator and at least one second indicator, and the processing unit determines the first indicator according to the bit sequence Part of the side link resources selected by the second terminal from one or more second side link resources.

In a possible implementation manner, the communication unit is further configured to receive a first indication from the second terminal, and the first indication is used to indicate that the side link resource selected by the second terminal is in the side link to which it belongs. The proportion of resources.

In another example, an embodiment of the present application provides an apparatus for processing side link resources. The apparatus may include: a communication unit and a processing unit. When the device is a terminal, the communication unit may be a communication interface or an interface circuit. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit, so that the device implements the second aspect or the method described in any one of the possible implementation manners of the second aspect. When the device is a chip in a terminal, the processing unit may be a processor, and the communication unit may be collectively referred to as a communication interface.

In a sixth aspect, the embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program or instruction. When the computer program or instruction runs on the computer, the computer can execute the operations as described in the first aspect to the first aspect. The side link resource processing method described in the first aspect/third aspect or any one of the possible implementation manners of the third aspect.

In a seventh aspect, the embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program or instruction. When the computer program or instruction is run on a computer, the computer executes operations such as the second aspect to the first aspect. The method for processing side link resources described in any one of the possible implementations of the second aspect.

In an eighth aspect, the embodiments of the present application provide a computer program product including instructions. When the instructions run on a computer, the computer executes various possible implementations of the first aspect or the first/third aspect or the third aspect. A method for processing side link resources described in Mode.

In a ninth aspect, the present application provides a computer program product including instructions, which when the instructions run on a computer, cause the computer to execute the side link described in the second aspect or various possible implementations of the second aspect The method of resource processing.

In a tenth aspect, an embodiment of the present application provides a device for processing side-link resources. The device for processing side-link resources includes a processor and a memory. The memory stores instructions. When the instructions are executed by the processor, The method for processing side link resources as described in the first aspect or the first aspect/third aspect or various possible implementation manners of the third aspect is implemented.

In an eleventh aspect, an embodiment of the present application provides a device for processing side-link resources. The device for processing side-link resources includes a processor and a memory. The memory stores instructions that are executed by the processor. , To implement the side link resource processing method as described in the second aspect or various possible implementation manners of the second aspect.

In a twelfth aspect, an embodiment of the present application provides a chip that includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a computer program or instruction to implement the first aspect or the first aspect/the first aspect. A method for processing side link resources described in the third aspect or various possible implementation manners of the third aspect. The communication interface is used to communicate with other modules outside the chip.

In a thirteenth aspect, an embodiment of the present application provides a chip that includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a computer program or instruction to implement the second aspect or each of the second aspect. A method for processing side link resources described in one possible implementation. The communication interface is used to communicate with other modules outside the chip.

Specifically, the chip provided in the embodiment of the present application further includes a memory for storing computer programs or instructions.

In a fourteenth aspect, an embodiment of the present application provides a communication system, which includes any one or more of the following: the third aspect and the side link resource processing described in the various possible implementations of the third aspect , The device for processing side link resources described in the fourth aspect and various possible implementations of the fourth aspect.

Any device or computer storage medium or computer program product or communication system provided above is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the corresponding method provided above The beneficial effects of the corresponding solutions will not be repeated here.

Description of the drawings

Figure 1 is a communication type of communication between a car and anything provided by an embodiment of the application;

FIG. 2 is a schematic structural diagram of a communication system applicable to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a communication device provided by an embodiment of this application;

4 is a schematic diagram of a first terminal reserving side link resources according to an embodiment of this application;

FIG. 5 is a schematic flow chart 1 of a method for processing side link resources according to an embodiment of this application;

FIG. 6 is a second schematic flow diagram of a method for processing side link resources according to an embodiment of this application;

FIG. 7 is a schematic diagram of mapping between side link resources and bit sequences provided by an embodiment of the application;

FIG. 8 is a schematic diagram of a side link resource division ratio provided by an embodiment of the application;

FIG. 9 is a schematic diagram of a second terminal selecting remaining side link resources according to an embodiment of the application;

FIG. 10 is a third schematic flowchart of a method for processing side link resources according to an embodiment of this application;

FIG. 11 is a schematic structural diagram 1 of an apparatus for processing side link resources according to an embodiment of this application;

FIG. 12 is a second schematic structural diagram of a side link resource processing apparatus provided by an embodiment of this application;

FIG. 13 is a schematic structural diagram of a chip provided by an embodiment of the application.

Detailed ways

In order to clearly describe 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 that have substantially the same function and effect. For example, the first terminal and the second terminal are only used to distinguish between different terminals, and the sequence of them is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not limit the difference.

It should be noted that in this application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in this application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

The network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

In this application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "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 a plurality of items (a). For example, at least one 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 the description of this application, "indication" may include direct indication and indirect indication, as well as explicit indication and implicit indication. The information indicated by a certain piece of information (the first indication information described below) is called the information to be instructed. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, the information to be indicated may be directly indicated, wherein the information to be indicated itself or the index of the information to be indicated, etc. For another example, the information to be indicated may also be indicated indirectly by indicating other information, where there is an association relationship between the other information and the information to be indicated. For another example, it is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. In addition, it is also possible to realize the indication of specific information by means of the pre-arranged order (for example, stipulated by the agreement) of the various information, so as to reduce the indication overhead to a certain extent.

In order to facilitate the understanding of the technical solutions of this application, some terms involved in this application are introduced below.

1). Sidelink (SL) refers to: defined for the direct communication between the terminal and the terminal. That is, the link between the terminal and the terminal for direct communication without forwarding through the base station.

2). Sidelink resources refer to resources used when transmitting sidelink service data and control information on the sidelink between terminals.

3). Resource collision means that two or more terminals have selected the same Sidelink resource.

In order to facilitate the understanding of the technical solution of the present application, the following first introduces the service data retransmission process in the prior art through two examples.

The above is an introduction to the terms involved in the embodiments of the present application, and will not be repeated hereafter.

The technical solution of this application can be applied to various communication systems, such as: long time evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) ) System, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, public land mobile network (PLMN) system, device-to-device (device to device, D2D) network system or machine to machine (machine to machine, M2M) network system, 5G communication system, car networking system, etc.

The network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems. In the embodiments of the present application, the method provided is applied to an NR system or a 5G network as an example for description.

As shown in Figure 2, Figure 2 shows a schematic structural diagram of a communication system provided by an embodiment of the present application. The communication system includes: one or more first terminals 10 and one or more second terminals 20. It should be understood that a first terminal 10 and a second terminal 20 are shown in FIG. 2.

Among them, there is a first interface for direct communication between the first terminal 10 and the second terminal 20, and the first interface may be referred to as a PC5 interface. The transmission link used for communication between the first terminal 10 and the second terminal 20 on the PC5 interface may be referred to as a side link.

In the embodiment of the present application, the first terminal 10 and the second terminal 20 may be in a scene without mobile network coverage, or in a scene with mobile network coverage. When the first terminal 10 and the second terminal 20 are in a scenario with mobile network coverage, the first terminal 10 and the second terminal 20 may be located in the same cell or in different cells.

In an optional implementation manner, the communication system shown in FIG. 2 further includes: a third terminal 50. Wherein, the third terminal 50 may compete with the first terminal 10 for the side link resources reserved by the first terminal 10 but there are remaining side link resources used for retransmission.

In an optional implementation manner, the communication system shown in FIG. 2 further includes: a network device 30 provided for the first terminal 10/third terminal 50 and a network device 40 provided for the second terminal 20.

It should be understood that the network device 30 and the network device 40 that provide services for the first terminal 10/the third terminal 50 and the second terminal 20 may be the same network device.

The interface between the first terminal 10/the third terminal 50 and the network device 30, and the interface between the second terminal 20 and the network device 40 may be referred to as a second interface. This second interface may be referred to as a Uu interface.

The names of the first interface and the second interface described above are only examples, and the embodiments of the present application do not limit the names of the first interface and the second interface.

The terminal in the embodiment of the present application may be the first terminal 10 or the third terminal 50. In the following embodiment, the terminal is the first terminal 10 as an example.

In the embodiment of the present application, the first terminal 10 may use the first side link resource on the side link to send the transport block to the second terminal. In the embodiment of the present application, for any transmission block, the first terminal 10 may determine two or more side link resources (including the first side link resource) corresponding to the transmission block, and the two or More than two side link resources may be configured by the network device 30 for the first terminal 10, or may be selected by the first terminal 10 from a pre-configured side link resource pool, which is not limited in the embodiment of the present application. One side link resource A among the two or more side link resources is used to send the initial transmission transport block to the second terminal. The remaining side uplink resources of the two or more side uplink resources except the side uplink resource A are used to retransmit the transmission block.

A terminal is a device with wireless communication capabilities that can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted. It can also be deployed on the water (such as ships, etc.). It can also be deployed in the air (for example, on airplanes, balloons, satellites, etc.). The terminal is also called user equipment (UE), mobile station (MS), mobile terminal (MT), and terminal equipment, etc., which provide users with voice and/or data connectivity. equipment. For example, terminals include handheld devices with wireless connection functions, vehicle-mounted devices, and so on. At present, the terminal can be: mobile phone (mobile phone), tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device (such as smart watch, smart bracelet, pedometer, etc.), In-vehicle equipment (for example, cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), virtual reality (VR) equipment, augmented reality (AR) equipment, industrial control (industrial control) Wireless terminals, smart home equipment (for example, refrigerators, TVs, air conditioners, electric meters, etc.), smart robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart The wireless terminal in the smart grid, the wireless terminal in the transportation safety, the wireless terminal in the smart city, or the wireless terminal in the smart home, and the flying equipment (for example, smart Robots, hot air balloons, drones, airplanes), etc. In a possible application scenario of this application, the terminal is a terminal device that often works on the ground, such as a vehicle-mounted device. In this application, for ease of description, chips deployed in the above-mentioned devices, such as System-On-a-Chip (SOC), baseband chips, etc., or other chips with communication functions may also be referred to as terminals.

The terminal may be a vehicle with corresponding communication function, or a vehicle-mounted communication device, or other embedded communication device, or a user-held communication device, including a mobile phone, a tablet computer, and the like.

As an example, in the embodiment of the present application, the terminal may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design everyday wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets and smart jewelry for physical sign monitoring.

A network device is an entity that can be used to transmit or receive signals in conjunction with a terminal. For example, it can be an access point (Access Point, AP) in WLAN, an eNB or eNodeB in LTE, or a relay station or access point, or vehicle-mounted equipment, wearable devices, and network equipment in the future 5G network. Network equipment in the PLMN network that will evolve in the future.

In addition, in the embodiment of the present invention, the network equipment provides services for the cell, and the terminal communicates with the network equipment through the transmission resources (for example, time domain resources, or frequency domain resources, or time-frequency resources) used by the cell. The cell may be a cell corresponding to a network device (such as a base station), a cell may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include: metro cell, micro cell ( Micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.

As shown in FIG. 3, FIG. 3 shows a schematic diagram of the hardware structure of a communication device provided by an embodiment of the present application. For the hardware structure of the first terminal 10/the third terminal 50 and the second terminal 20 in the embodiment of the present application, reference may be made to the structure shown in FIG. 3. The communication device includes a processor 41, a communication line 44, and at least one transceiver 43.

The processor 41 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of this application. integrated circuit.

The communication line 44 may include a path to transmit information between the aforementioned components.

The transceiver 43 uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .

Optionally, the communication device may further include a memory 42.

The memory 42 may be a 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 The dynamic storage device 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 versatile 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 used by a computer Any other media accessed, but not limited to this. The memory can exist independently and is connected to the processor through the communication line 44. The memory can also be integrated with the processor.

The memory 42 is used to store computer execution instructions for executing the solution of the application, and the processor 41 controls the execution. The processor 41 is configured to execute computer-executable instructions stored in the memory 42 to implement a method for processing sidelink resources provided in the following embodiments of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 41 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 3.

In a specific implementation, as an embodiment, the communication device may include multiple processors, such as the processor 41 and the processor 45 in FIG. 3. Each of these processors can 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, and/or processing cores for processing data (for example, computer program instructions).

The first terminal may retransmit the transmission block in a retransmission manner based on blind retransmission, and the first terminal initially transmits the transmission block (Transmission Block, TB) to the second terminal. The transmission block may include service data and side link control information (SCI). In LTE V2X, the SCI includes the SF _gap field, which is used to indicate the time domain interval between initial transmission and retransmission. The value of the SF _gap field may be a preset value. If the preset value of this field is 0, it means that there is no need to retransmit. If the preset value of this field is an integer greater than 0, it means that the first terminal needs to resend the transmission block to the second terminal. Because before the initial transmission of the transmission block is realized, the first terminal can _{determine whether the transmission block needs to be retransmitted according to the SF gap} field. The blind retransmission process will not change due to the result of the initial transmission, regardless of whether the second terminal successfully receives it. To the transmission block, as long as the preset value of the field is an integer greater than 0, the first terminal will re-send the transmission block to the second terminal. In NR V2X, blind retransmission also needs to indicate in the SCI whether blind retransmission is required, and the information about the reserved resources for blind retransmission. Therefore, blind retransmission does not involve the reservation of side link resources for retransmission. The situation of use.

In NR V2X, the first terminal can also retransmit the transport block in a feedback-based retransmission manner. The same transport block supports four transmissions in network communication as an example for illustration. This solution is also applicable to other transmission times. The four transmissions may include one initial transmission and three retransmissions. Referring to FIG. 4, FIG. 4 is a schematic diagram of a first terminal reserving a side uplink resource, where the abscissa represents time, and the ordinate represents transmission frequency. Side link resource 1 is a side link resource used for initial transmission of the transport block, and side link resource 2 to side link resource 4 are side link resources used for retransmission.

With reference to FIG. 4, for example, the first terminal sends a transmission block to the second terminal on the side link resource 1. That is, the initial transmission of the transmission block is realized. The side link resource 1 includes the SCI. Before the transmission block is retransmitted, the first terminal will indicate the reserved side link resource for three retransmissions in the SCI. For example, side link resource 2 to side link resource 4. If the first terminal receives the response information from the second terminal, it means that the second terminal successfully receives the transmission block sent by the first terminal on the side link resource 1. Therefore, the first terminal does not need to retransmit the transmission block to the second terminal. Since the second terminal successfully receives the transmission block sent by the first terminal on the side link resource 1, the side link resource reserved by the first terminal has surplus.

In the prior art, the first terminal will release the remaining side link resources 2 to 3 when the response information is received. Any terminal (including the first terminal, the second terminal, and the third terminal) can be used. Contend to use the released side link resource 2 to side link resource 4. The any terminal can select the side link resource from the side link resource 2 to the side link resource 4 by means of listening before talk (LBT) or long term sensing (Long term sensing).

Continuing to refer to Figure 4, taking LBT as an example of selecting side link resources, the process of multiple terminals competing for side link resources includes listening to the idle state of side link resources in a sensing window. Select the side link resource to be used in the resource selection window. Each terminal will be assigned a random value. In order to prevent resource collision, the random value corresponding to each terminal is different. Each time the multiple terminals listen, the random value corresponding to each of the multiple terminals will be reduced by 1. When there is a terminal with a random value of 0, the competing side link resource can be given the random value 0 terminal selection.

For example, the random value corresponding to terminal 1 is 8, and the random value corresponding to terminal 2 is 6. Terminal 1 and terminal 2 listen to the idle status of side link resources in the listening window. If it is idle, terminal 1 and The random value of the terminal 2 is reduced by 1, and the listening process is repeated until the random value of the terminal 2 is reduced to 0, and then the terminal 2 can obtain the side link resource.

However, this way of competing for selection of side link resources will introduce a certain delay in the process of listening for idle side link resources. Only the side link resources in the resource selection window can be used by terminals with a random value of 0, and the side link resources in the listening window cannot be used by terminals with a random value of 0. Since only part of the side-link resources in the remaining side-link resources can be reused by the terminal, resources will be wasted.

In order to improve resource utilization and prevent link resources in the side link from being wasted, an embodiment of the present application provides a method for processing side link resources. The following is a description of a side link provided by the embodiment of the present application in conjunction with FIG. 5 The method of link resource processing is explained in detail.

It should be noted that the embodiment of the present application can be applied to NR-V2X network communication, and can also be applied to any communication scenario where there is retransmission resource reservation and retransmission resource processing, which is not limited in the embodiment of the present application.

It should be pointed out that the various embodiments of the present application can learn from each other or refer to each other, for example, the same or similar steps, the method embodiment, the communication system embodiment, and the device embodiment can all refer to each other without limitation.

It should be noted that the steps executed by the second terminal in the method for processing side link resources in the embodiment of the present application may also be executed by a chip applied to the second terminal. The steps performed by the first terminal/third terminal may also be performed by a chip applied in the first terminal/third terminal. In the following embodiment, a method for processing side link resources is executed by the first terminal/third terminal and the second terminal as an example.

As shown in FIG. 5, FIG. 5 shows a schematic flowchart of a method for processing sidelink resources provided by an embodiment of the present application, and the method includes:

S301. The second terminal determines that the transmission block from the first terminal is successfully received. The transmission block is a transmission block transmitted by the first terminal on the first side uplink resource.

In an example, the transmission block may be an initial transmission transmission block. The first transmission block is the transmission block that the first terminal transmits to the second terminal for the first time (first time). At this time, the first side link resource may be a side link resource used to transmit the first transmission transport block. For example, the first side link resource may be the side link resource 1 in FIG. 4.

In another example, the transmission block is a retransmission transmission block. The retransmission transmission block is the transmission block that the first terminal transmits to the second terminal for the Mth time. In other words, the retransmission transmission block is the transmission block that the first terminal transmits to the second terminal for the first time. M is an integer greater than or equal to 2, and M is less than or equal to the maximum number of retransmissions of the first terminal. At this time, the first side uplink resource is the side uplink resource used for transmitting the retransmission transport block. For example, the first side link resource may be any one of the side link resource 2 to the side link resource 4 in FIG. 4.

It is understandable that, before S301, the method provided in the embodiment of the present application may further include: the first terminal sends a transmission block to the second terminal on the first side uplink resource.

S302. The second terminal sends a resource selection instruction to the first terminal, so that the first terminal/third terminal receives the resource selection instruction from the second terminal.

Wherein, the resource selection indication is used to indicate a selection result of the second terminal on one or more second side uplink resources used to retransmit the transmission block.

That is, the second terminal informs the first terminal/third terminal whether or not the side link resource is selected from the one or more second side link resources or which side link resources are selected through the resource selection instruction.

For example, if the first side link resource is side link resource 1, then the one or more second side link resources may be side link resource 2~side link resource in FIG. 4 Any of 4. It is worth noting that if the first side link resource is side link resource 2, the one or more second side link resources may be side link resource 3 to side link resource in FIG. 4 Any one of the road resources 4.

It should be noted that after the second terminal sends the resource selection instruction to the first terminal in the embodiment of the present application, not only the first terminal can receive the resource selection instruction from the second terminal, but other terminals (for example, the first terminal) Three terminal) can also receive a resource selection instruction from the second terminal. For the specific action of the third terminal receiving the resource selection instruction, refer to the action performed by the first terminal in the following embodiments. In this embodiment of the present application, except for the following step S304 and the process of sending a transmission block to the second terminal, all operations are performed by The steps performed by the first terminal can all be performed by the third terminal. In other words, in addition to the above step S304 and the process of sending the transmission block to the second terminal, the third terminal can replace the first terminal.

It should be understood that the third terminal may determine the interactive information between the first terminal and the second terminal by detecting the side link between the first terminal and the second terminal, and the interactive information may be sent by the first terminal to the second terminal. The side link control information related to the resource indication may also be the side link feedback control information sent by the second terminal to the first terminal. Therefore, the third terminal can not only determine the information of one or more second side link resources according to the side link control information of the first side link resource. The selection result of the one or more second side link resources may also be determined according to the resource selection indication fed back by the second terminal.

As a possible implementation manner, S302 in the embodiment of the present application can be implemented in the following manner: the second terminal sends a resource selection instruction to the first terminal on the side link, so that the first terminal/third terminal is at the side The resource selection instruction from the second terminal is received on the uplink.

Wherein, the side link is a link established between the first terminal and the second terminal for transmitting side link services (for example, transmission blocks).

S303. The first terminal/third terminal determines, according to the resource selection instruction, a selection result of the second terminal for the one or more second side uplink resources.

It should be understood that the one or more second side link resources are reserved unused remaining resources after the first terminal successfully sends the transport block to the second terminal.

The embodiment of the application provides a method for processing sidelink resources. After the second terminal successfully receives the transmission block from the first terminal, the second terminal can inform the first terminal through the confirmation message that the second terminal has successfully received the transmission. Block, and can inform the first terminal/third terminal of the selection result of one or more second side uplink resources for retransmission of the transport block through the resource selection indication. This can increase the priority for the second terminal to select side link resources from one or more second side link resources, that is, the second terminal can prioritize whether to select from one or more second side link resources The selection of side-link resources, compared with the prior art, avoids the delay caused by the interception process when multiple terminals compete for the selection of side-link resources, which improves the utilization of side-link resources, and at the same time Reduce the probability of occurrence of side link resource collisions.

In a possible embodiment, before S302, the method provided in the embodiment of the present application may further include: the second terminal determines information about one or more second side uplink resources.

As a possible implementation, the second terminal in the embodiment of the present application determines information about one or more second side link resources, which can be implemented in the following manner: the first side link resource carries the side link Road control information, and side link control information is used to indicate information about one or more second side link resources. Therefore, the second terminal may determine information about one or more second side link resources according to the side link control information.

As another possible implementation manner, the second terminal in the embodiment of the present application determines information about one or more second side uplink resources, which can be implemented in the following manner: the first terminal sends instruction information to the second terminal, The indication information is used to indicate information about one or more second side uplink resources.

Referring to FIG. 6, in a possible embodiment, the method provided in the embodiment of the present application further includes:

S304. The second terminal sends confirmation information to the first terminal on the side link, so that the first terminal receives the confirmation information from the second terminal on the side link. The confirmation information is used to indicate that the second terminal successfully receives the transmission block.

Exemplarily, the confirmation information may be ACK information.

It is understandable that the successful reception in the embodiment of the present application can also be replaced by correct reception or correct decoding. In the embodiment of the present application, unsuccessful reception may also be replaced by incorrect reception or incorrect decoding. In the following embodiments, successful reception and unsuccessful reception are taken as examples.

Exemplarily, the confirmation information and the foregoing resource selection indication may be carried in the same information. For example, the second terminal sends sidelink feedback control information (SFCI) to the first terminal. Among them, the SFCI includes confirmation information and resource selection instructions, and the SFCI can be carried by a sidelink feedback channel (Physical sidelink feedback channel, PSFCH). The confirmation information and the resource selection instruction may also be carried in different information, which is not limited in the embodiment of the present application.

In a possible embodiment, the resource selection indication includes a bit sequence, and the bit sequence is used to indicate a selection result of the second terminal on one or more second side link resources. The bit sequence may include one or more bits, and different bit sequence values correspond to different selection results.

The following will respectively introduce the specific manifestations of the bit sequence when the second terminal selects a side link resource from one or more second side link resources and when the side link resource is not selected:

Example 1) A situation where the second terminal selects a side link resource from one or more second side link resources

Exemplarily, the bit sequence is specifically used to indicate the information of the side link resource selected by the second terminal from the one or more second side link resources. The second terminal may select all the side link resources from the one or more second side link resources, or select part of the side link resources from the one or more second side link resources .

The information of the side link resource may be the time domain position of the side link resource or the number of the side link resource. The number of side link resources may be negotiated by the first terminal/third terminal and the second terminal, or determined by the second terminal and notified to the first terminal/third terminal, or determined by the first terminal/third terminal and notified The second terminal.

In a possible embodiment, with continued reference to FIG. 6, the specific implementation of S303 in the embodiment of the present application may be:

S3031. The first terminal/the third terminal determines the side link resource information selected by the second terminal from the one or more second side link resources according to the bit sequence.

Example 1-1), indicate all selection

In a possible embodiment, S3031 in the embodiment of the present application may be specifically implemented in the following manner:

The value of each bit in the bit sequence is the first indicator, and the first terminal/third terminal determines the side link selected by the second terminal from the one or more second side link resources The resource includes all the second side link resources in the one or more second side link resources. That is, it is determined that all the one or more second side uplink resources are selected by the second terminal.

For example, taking the one or more second side link resources including side link resource 2 to side link resource 4, the first indicator is "1" and the second indicator is "0" as an example, The specific bit sequence is shown in Table 1 and Table 2: The value of each bit in the bit sequence is 1, indicating that the side link resource selected by the second terminal includes the one or more second side link resources All side link resources in. That is, the value of each bit in the bit sequence is 1, indicating that the side link resource selected by the second terminal includes side link resource 2 to side link resource 4.

Referring to Table 1, taking the number of bits included in the bit sequence as 2 as an example, the bit sequence may be 11.

Table 1

比特序列Bit sequence	选择结果Select result
0000	未选择侧行链路资源2～侧行链路资源4中的任一个Any one of side link resource 2 to side link resource 4 is not selected

0101	选择侧行链路资源2Select side link resource 2
1010	选择侧行链路资源2和侧行链路资源3Select side link resource 2 and side link resource 3
1111	选择侧行链路资源2～侧行链路资源4Select side link resource 2～side link resource 4

Referring to Table 2, taking the number of bits included in a bit sequence of 3 as an example, the bit sequence may be 111.

Table 2

比特序列Bit sequence	选择结果Select result
000000	未选择侧行链路资源2～侧行链路资源4中的任一个Any one of side link resource 2 to side link resource 4 is not selected
001001	选择侧行链路资源2Select side link resource 2
010010	选择侧行链路资源3Select side link resource 3
011011	选择侧行链路资源4Select side link resource 4
100100	选择侧行链路资源2和侧行链路资源3Select side link resource 2 and side link resource 3
101101	选择侧行链路资源2和侧行链路资源4Select side link resource 2 and side link resource 4
110110	选择侧行链路资源3和侧行链路资源4Select side link resource 3 and side link resource 4
111111	选择侧行链路资源2～侧行链路资源4Select side link resource 2～side link resource 4

When the second terminal selects all the side link resources of the one or more second side link resources, and the first terminal/the third terminal is competing for resources, it can determine the one or more resources according to the resource selection instruction. The second side uplink resource has been occupied by the second terminal and can no longer be selected by the first terminal/third terminal, so that the first terminal/third terminal excludes the one or more second side uplinks Resources to select other side link resources.

Example 1-2), indicating partial selection

In a possible embodiment, S3031 in the embodiment of the present application can also be specifically implemented in the following manner:

The value of the bit sequence includes at least one first indicator and at least one second indicator, and the bit sequence is specifically used to indicate the partial side chain selected by the second terminal from the one or more second side chain resources Road resource information. The first terminal/third terminal determines part of the side link resources selected by the second terminal from the one or more second side link resources according to the bit sequence.

When the second terminal selects part of the side link resources of the one or more second side link resources, when the first terminal/the third terminal is competing for resources, it will exclude the second terminal from being selected according to the resource selection instruction. Part of the side link resources selected by the terminal. Competitive selection is performed on the side link resources that are not selected by the second terminal among the one or more second side link resources.

In the following description, the one or more second side link resources including the side link resource 2 to the side link resource 4 are still taken as an example for description.

With reference to Table 1, taking the bit sequence of 01 as an example, it means that the second terminal selects side link resource 2, then the first terminal/third terminal can avoid side link resource 2 and select the side link resource 3 and side link resources 4.

Since the arrangement order between the at least one first indicator and the at least one second indicator is different, resulting in different values of the bit sequence, the following will be introduced separately:

A). When the value of the least significant bit in the bit sequence is the first indicator, and the value of the remaining bits is the second indicator, the side link resource selected by the second terminal includes the side link resource 2. For example, a bit sequence of 01 in Table 1 and a bit sequence of 001 in Table 2 indicate that the side link resource 2 is selected.

Combining Table 2 or Table 1, the lowest bit in the bit sequence can be determined from left to right, that is, the rightmost bit is the lowest bit in the bit sequence. The leftmost bit is the highest bit in the bit sequence.

It should be noted that when the number of bits included in the bit sequence is 2, the selected side link resource is based on the size of the single transmission resource in multiple transmissions, starting with the side link resource after the confirmation information is received. Start resource point. The second terminal needs to select the side link resource from the starting resource point. If the second terminal needs to select two side link resources, referring to Figure 4, when the first terminal receives the ACK message after transmitting the transport block for the first time on the side link resource 1, the resources selected by the second terminal include the side link Resource 2 and side link resource 3, and side link resource 4 can be selected by other terminals. When the first terminal receives the ACK information after the first retransmission on the side link resource 2, the resources selected by the second terminal include the side link resource 3 and the side link resource 4.

When the number of bits included in the bit sequence is 3, the selected side link resource is still based on the size of the single transmission resource in multiple transmissions as the granularity, and the side link resource 2 to the side link resource is still in accordance with the time domain. Resource 4 is selected, but the difference is that the second terminal can select the side link resource from any resource point as the resource starting point, and the time domain interval between the selected side link resources can also be different from that of adjacent two. Time domain interval between two side link resources.

B). When the value of the most significant bit in the bit sequence is 1, the value of the remaining bits is 0. For example, referring to Table 1 and Table 2, the bit sequence is 100 or 10, indicating the side link resource selected by the second terminal Including side link resource 2 and side link resource 3.

For example, referring to Table 1, taking the number of bits included in the bit sequence of 2 as an example, the bit sequence may be 10, which means that the second terminal selects side link resource 2 and side link resource from the 3 side link resources. Link resource 3. Referring to Table 2, taking the number of bits included in the bit sequence of 3 as an example, the bit sequence is 100, indicating that the second terminal selects side link resource 2 and side link resource from the 3 side link resources 3.

C). When the value of the most significant bit and the value of the least significant bit in the bit sequence are 0, and the value of the remaining bits is 1, the side link resource selected by the second terminal includes one of the three side link resources. Uplink resources 3.

For example, referring to Table 2, when the bit sequence is 010, it means that the second terminal has selected side link resource 3 from the three side link resources.

D). When the value of the most significant bit in the bit sequence is 0 and the value of the remaining bits is 1, the side link resource selected by the second terminal includes the side link resource 4 of the 3 side link resources.

For example, referring to Table 3, when the bit sequence is 100, it means that the second terminal selects the side link resource 4 from the three side link resources.

E). When the value of the most significant bit and the value of the least significant bit in the bit sequence are the first indicator, and the values of the remaining bits are the second indicator, the side link resource selected by the second terminal includes 3 side rows The side link resource 2 and the side link resource 4 in the link resources.

For example, referring to Table 2, when the bit sequence is 101, it means that the second terminal selects the side link resource 2 and the side link resource 4 from the three side link resources.

F). When the value of the least significant bit in the bit sequence is the second indicator, and the values of the remaining bits are the first indicator, the side link resource selected by the second terminal includes one or more second side links The side link resource 3 and the side link resource 4 in the resources.

For example, referring to Table 2, when the bit sequence is 110, it means that the second terminal selects the side link resource 3 and the side link resource 4 from the three side link resources.

In another possible implementation manner, the second terminal in the embodiment of the present application may also indicate the resource selection result to the first terminal/third terminal in the following manner. For example, each side link resource in one or more second side link resources is associated with at least one bit, and when at least one bit associated with any one side link resource is the first indicator, it means that the side link resource is associated with at least one bit. The link resource is selected, and when at least one bit associated with any side link resource is the second indicator, it means that the side link resource is not selected. For example, referring to Figure 7, taking any side link resource associated with 1 bit as an example, side link resource 2 is associated with the least significant bit, side link resource 3 is associated with the middle bit, and side link resource 4 is associated The most significant bit, if the bit sequence is 101, it means that the side link resource 2 and the side link resource 4 are selected, and the side link resource 3 is not selected.

With reference to Example 1-1 and Example 1-2, in a possible embodiment, with continued reference to FIG. 6, the method provided in the embodiment of the present application further includes:

S305. The second terminal sends a first instruction to the first terminal on the side link, so that the first terminal/third terminal receives the first instruction from the second terminal.

The first indication is used to indicate the proportion of the side link resources selected by the second terminal in the side link resources to which they belong, that is, the selected side link resources can be the same as the single transmission resource among multiple transmissions. The size of some resources is granular. The first indication may also be represented by a bit sequence, and the bit sequence of the first indication and the bit sequence of the selection result may form a new bit sequence.

Exemplarily, referring to FIG. 8, 8-1 in FIG. 8 indicates that the proportion of the side link resource selected by the second terminal in the side link resource to which it belongs is 25%, and 8-2 in FIG. The ratio of the side link resources selected by the second terminal to the side link resources to which it belongs is 50%, and 8-3 in Figure 8 indicates that the side link resources selected by the second terminal are in the side link resources to which it belongs. The ratio in is 75%, and 8-4 in FIG. 8 indicates that the ratio of the side link resource selected by the second terminal in the side link resource to which it belongs is 100%.

It should be understood that the foregoing is only an exemplary description of the embodiments of the present application. In addition to 25%, 50%, 75%, and 100%, the first indication may also be used to indicate other ratio values, which are not limited in the embodiments of the present application.

Exemplarily, the first indication can also form a bit sequence including P bits together with the bit sequence. The first N bits of the P bits are used to indicate the result of resource selection, and the last PN bit is used to indicate the selected resource. % Of.

For example, taking the bit sequence including 4 bits as an example, the first two bits are used to indicate the result of resource selection, and the last two bits are used to indicate the proportion of the selected resource. Referring to Figure 9, Figure 9 shows that the first terminal receives the ACK message after the initial transmission, and the second terminal selects two side link resources, namely side link resource 2 and side link resource 3, where, The proportion of the side link resource selected by the second terminal in the side link resource 2 is 50%, the proportion in the side link resource 3 is also 50%, and the remaining 50% in the side link resource 2. %, the remaining 50% of the side link resource 3, and the side link resource 4 can be selected by other terminals.

Exemplarily, referring to Table 3, bit sequence 1 is used to represent the bit sequence of the selection result, and bit sequence 2 is used to represent the bit sequence of the first indication. For example, a bit value of 0000 indicates that the second terminal has not selected the side link resource, a bit value of 0100 indicates that the second terminal has selected 25% of the side link resource 2, and a bit value of 0101 indicates that the second terminal has selected the side link resource. 50% of link resource 2.

table 3

It should be noted that the bit sequence 2 may be used to indicate the proportion of each side link resource in the selection result, and may also be used to indicate the proportion of all side link resources in the selection result that are arranged sequentially in time sequence.

In a possible embodiment, when the second terminal selects part of the side link resources of each side link resource, the first terminal/third terminal determines each side link resource according to the first indication and the resource selection indication. Part of the side link resources selected by the second terminal among the side link resources. Therefore, the part of the side link resources is avoided, and the other unselected side link resources in each side link resource are competitively selected.

In summary, through the first instruction and the resource selection instruction, the second terminal can flexibly select the size of the resource according to the size of the service, thereby avoiding resource waste.

Example 2) The case where the second terminal does not select a side link resource from one or more second side link resources

Referring to FIG. 10, in a possible embodiment, the specific implementation of S303 in the embodiment of the present application may also be:

S3032. The first terminal/the third terminal determines, according to the bit sequence, that the second terminal does not select a side link resource from the one or more second side link resources.

Exemplarily, the value of each bit in the bit sequence is the second indicator, and the first terminal/third terminal determines that the second terminal does not select from the one or more second side uplink resources Side link resources.

For example, taking the second indicator being "0" as an example, the value of each bit in the bit sequence is 0, indicating that the second terminal has not selected a side link resource from one or more second side link resources . Referring to Table 1, when the bit sequence is two bits, the bit sequence may be 00, and referring to Table 2, when the bit sequence is three bits, the bit sequence may be 000.

When the second terminal does not select any side link resource of the one or more second side link resources, the first terminal/third terminal can directly perform the operation on the one or more second side link resources. Competitive choice.

It should be noted that, in another embodiment, the resource selection indication in the embodiment of the present application may be used to indicate the starting resource point selected by the second terminal from one or more side link resources and the number of resources. An example is described by taking the one or more second side link resources including side link resource 2 to side link resource 4 as an example. The first terminal/the third terminal and the second terminal negotiate to take the side link resource after receiving the ACK information as the starting resource point. At this time, if the starting resource point is side link resource 2 as shown in FIG. 4, and the number of resources is 2, it means that the second terminal selects the side link resource 2 to side link resource 4. For side link resource 2 and side link resource 3, if the number of resources is 3, it means that the selected side link resource is from side link resource 2 to side link resource 4. If the number of resource selection is 0, Indicates not selected. In another example, the second terminal may choose any one from the side link resource 2 to the side link resource 4 as the starting resource point.

The foregoing mainly introduces the solution of the embodiment of the present application from the perspective of interaction between various network elements. It can be understood that, in order to implement the above-mentioned functions, each network element, such as the first terminal/the third terminal, and the second terminal, includes a hardware structure and/or software module 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.

In the embodiments of the present application, the first terminal/the third terminal, and the second terminal may be divided into functional units according to the above-mentioned method examples. For example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated in One processing unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units 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.

The method of the embodiment of the present application is described above in conjunction with FIG. 5 to FIG. 10, and the device for performing the sidelink resource processing of the foregoing method provided by the embodiment of the present application is described below. Those skilled in the art can understand that the methods and devices can be combined and referenced. The device for processing sidelink resources provided in the embodiments of the present application can execute the above method for processing sidelink resources. , Steps performed by the second terminal.

The following is an example of dividing each function module corresponding to each function:

In the case of using an integrated unit, FIG. 11 shows a device for processing side link resources involved in the foregoing embodiment. The device for processing side link resources may include: a processing unit 101, and a communication Unit 102.

In an example, the device for processing side link resources is the second terminal, or is a chip applied to the second terminal. In this case, the communication unit 102, an apparatus for supporting the processing of the side uplink resource, executes S302 performed by the second terminal in the above-mentioned embodiment. The processing unit 101 is configured to support an apparatus for processing side uplink resources to execute S301 performed by the second terminal in the foregoing embodiment.

In a possible implementation manner, the communication unit 102 is specifically configured to support the apparatus to execute S304 and S305 performed by the second terminal in the foregoing embodiment.

In another example, the device for processing side link resources is the first terminal/third terminal, or a chip applied to the first terminal/third terminal. In this case, the communication unit 102, the apparatus for supporting the processing of the side uplink resource, executes S302 performed by the first terminal/the third terminal in the foregoing embodiment. The processing unit 101 is configured to support the device for processing the side link resource to execute S303 executed by the first terminal/the third terminal in the foregoing embodiment.

In a possible implementation manner, the processing unit 101 is specifically configured to support the apparatus to execute S3031 and S3032 executed by the first terminal/third terminal in the foregoing embodiment.

In a possible implementation manner, the communication unit 102 is specifically configured to support the apparatus to execute S305 executed by the first terminal/third terminal in the foregoing embodiment.

It should be noted that the communication unit 102 is also specifically configured to support the apparatus to execute S304 executed by the first terminal in the foregoing embodiment. However, the communication unit 102 may not be used to support the third terminal to perform S304.

Optionally, the device for processing side link resources may further include a storage unit. The storage unit is used to store computer program code, and the computer program code includes instructions. If the side link resource processing device is applied to the second terminal, the storage unit can be a storage unit (for example, a register, a cache, etc.) in the chip, or a storage unit in the second terminal located outside the chip. Storage unit (for example, read only memory, random access memory, etc.).

In the case of using an integrated unit, FIG. 12 shows a schematic diagram of a possible logical structure of the apparatus for processing side link resources involved in the foregoing embodiment. The device for processing side link resources includes: a processing module 112 and a communication module 113. The processing module 112 is used to control and manage the actions of the side-link resource processing device. For example, the processing module 112 is used to perform information/data processing steps in the side-link resource processing device. The communication module 113 is used to perform information/data sending or receiving steps in a device supporting side link resource processing.

In a possible embodiment, the device for processing side link resources may further include a storage module 111 for storing program codes and data in the device for processing side link resources.

Exemplarily, the device for processing sidelink resources is the second terminal, or is a chip applied to the second terminal. In this case, the processing module 112 is used to support the side-link resource processing device to execute the side-link resource processing method provided in the above embodiment, for example, to execute S301 executed by the second terminal in FIG. 5 . The communication module 113 is configured to support the side-link resource processing device to execute the side-link resource processing method provided in the foregoing embodiment, for example, to execute S302 executed by the second terminal in FIG. 5.

In a possible implementation manner, the communication module 113 is specifically configured to support the device to execute S304 and S305 performed by the second terminal in the foregoing embodiment.

Exemplarily, the device for processing side link resources is the first terminal/third terminal, or a chip applied to the first terminal/third terminal. In this case, the processing module 112 is used to support the side-link resource processing device to execute the side-link resource processing method provided in the above-mentioned embodiment, for example, to execute the method for processing side-link resources in FIG. S303 executed by the terminal. The communication module 113 is configured to support the side-link resource processing device to execute the side-link resource processing method provided in the foregoing embodiment, for example, to execute S302 executed by the first terminal/the third terminal in FIG. 5.

In a possible implementation manner, the processing module 112 is specifically configured to support the apparatus to execute S3031 and S3032 executed by the first terminal/third terminal in the foregoing embodiment.

In a possible implementation manner, the communication module 113 is specifically configured to support the apparatus to execute S305 executed by the first terminal/third terminal in the foregoing embodiment.

It should be noted that the communication module 113 is also specifically configured to support the device to execute S304 executed by the first terminal in the foregoing embodiment. However, the communication module 113 may not be used to support the third terminal to perform S304.

The processing module 112 may be a processor or a controller, for example, a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, Hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication module 113 may be a transceiver, a transceiver circuit, or a communication interface. The storage module 111 may be a memory.

When the processing module 112 is the processor 41 or the processor 45, the communication module 113 is the transceiver 43, and the storage module 111 is the memory 42, the side link resource processing device involved in the present application may be the one shown in FIG. 3 communication device.

FIG. 13 is a schematic structural diagram of a chip 150 provided by an embodiment of the present application. The chip 150 includes one or more (including two) processors 1510 and a communication interface 1530.

Optionally, the chip 150 further includes a memory 1540. The memory 1540 may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 1510. A part of the memory 1540 may also include a non-volatile random access memory (NVRAM).

In some embodiments, the memory 1540 stores the following elements, execution modules or data structures, or their subsets, or their extended sets.

In the embodiment of the present application, the corresponding operation is executed by calling the operation instruction stored in the memory 1540 (the operation instruction may be stored in the operating system).

One possible implementation manner is that the structures of the chips used by the first terminal/third terminal and the second terminal are similar, and different devices can use different chips to realize their respective functions.

The processor 1510 controls the processing operations of any one of the first terminal/the third terminal and the second terminal. The processor 1510 may also be referred to as a central processing unit (CPU).

The memory 1540 may include a read-only memory and a random access memory, and provides instructions and data to the processor 1510. A part of the memory 1540 may also include a non-volatile random access memory (NVRAM). For example, in an application, the memory 1540, the communication interface 1530, and the memory 1540 are coupled together by a bus system 1520, where the bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for clarity of description, various buses are marked as the bus system 1520 in FIG. 13.

The method disclosed in the foregoing embodiments of the present application may be applied to the processor 1510 or implemented by the processor 1510. The processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 1510 or instructions in the form of software. The aforementioned processor 1510 may be a general-purpose processor, a digital signal processing (digital signal processing, DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or Other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540, and completes the steps of the foregoing method in combination with its hardware.

In a possible implementation manner, the communication interface 1530 is used to perform the receiving and sending steps of the first terminal/the third terminal and the second terminal in the embodiment shown in FIG. 5. The processor 1510 is configured to execute the processing steps of the first terminal/third terminal and the second terminal in the embodiment shown in FIG. 5.

The above communication unit may be an interface circuit or communication interface of the device for receiving signals from other devices. For example, when the device is implemented in the form of a chip, the communication unit is an interface circuit or a communication interface used by the chip to receive signals or send signals from other chips or devices.

In the foregoing embodiment, the instructions stored in the memory for execution by the processor may be implemented in the form of a computer program product. The computer program product may be written in the memory in advance, or it may be downloaded and installed in the memory in the form of software.

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 according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. 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, computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to transmit to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk, SSD).

In one aspect, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium. When the instructions are executed, the second terminal or a chip applied to the second terminal executes the side chain provided in the above-mentioned embodiments. The operations performed by the second terminal in the method for processing path resources, for example, perform S301, S302, S304, and S305 performed by the second terminal in FIG. 5.

On the other hand, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, the first terminal/third terminal or the chip applied in the first terminal/third terminal is provided. Perform operations performed by the first terminal/third terminal in the method for processing side link resources provided in the foregoing embodiment, for example, perform S302, S303, S3031, S3032 performed by the first terminal/third terminal in FIG. 5 .

It should be noted that the first terminal or the chip applied in the first terminal may also execute S304 in the method for processing side link resources provided in the foregoing embodiment.

In one aspect, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, the second terminal or a chip applied to the second terminal executes the side link provided in the above-mentioned embodiments. The operations performed by the second terminal in the resource processing method, for example, perform S301, S302, S304, and S305 performed by the second terminal in FIG. 5.

On the other hand, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, the first terminal/third terminal or the chip applied in the first terminal/third terminal is executed The operations performed by the first terminal/third terminal in the method for processing sidelink resources provided in the foregoing embodiment, for example, perform S302, S303, S3031, and S3032 performed by the first terminal/third terminal in FIG. 5.

In one aspect, a chip is provided. The chip is applied to a second terminal. The chip includes at least one processor and a communication interface. The communication interface is coupled to the at least one processor. The processor is used to run instructions to execute the side provided by the above-mentioned embodiment. The operations performed by the second terminal in the uplink resource processing method, for example, perform S301, S302, S304, and S305 performed by the second terminal in FIG. 5.

On the other hand, a chip is provided. The chip is applied to a first terminal. The chip includes at least one processor and a communication interface, the communication interface is coupled to the at least one processor, and the processor is used to run instructions to execute the The operations performed by the first terminal/third terminal in the method for processing sidelink resources are, for example, performing S302, S303, S3031, and S3032 performed by the first terminal/third terminal in FIG. 5.

In another embodiment of the present application, a communication system is also provided, including a first terminal and a second terminal. The communication system can be adapted to the architecture shown in FIG. 2, wherein the second terminal can execute the above-mentioned embodiment Operations performed by the second terminal in the provided method for processing sidelink resources, for example, performing S301, S302, S304, and S305 performed by the second terminal in the method for processing sidelink resources provided in the foregoing embodiment. The first terminal/third terminal may perform the operations performed by the first terminal/third terminal in the method for processing side link resources provided in the foregoing embodiment, for example, performing the side link resource processing provided in the foregoing embodiment S302, S303, S3031, S3032 performed by the first terminal/third terminal in the method. In particular, the first terminal may also execute S304 in the method for processing side link resources provided in the foregoing embodiment.

In the above-mentioned 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 can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. Computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (digital subscriber line, referred to as DSL) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server, or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or includes one or more data storage devices such as servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Although the present application is described in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and realize the disclosure by looking at the drawings, the disclosure, and the appended claims. Other changes to the embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit can 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. Correspondingly, the specification and drawings are merely exemplary descriptions of the application as defined by the appended claims, and are deemed to cover 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.

Finally, it should be noted that the above are only specific implementations of this application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application shall be covered by this application. Within the scope of protection applied for. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A method for processing side link resources, which is characterized in that it includes:

The second terminal determines that the transmission block from the first terminal is successfully received; the transmission block is the transmission block transmitted by the first terminal on the first side uplink resource;

The second terminal sends confirmation information and a resource selection indication to the first terminal, where the confirmation information is used to indicate that the second terminal successfully receives the transmission block, and the resource selection indication is used to indicate the second The terminal's selection result of one or more second side uplink resources used for retransmission of the transport block.
The method according to claim 1, wherein the resource selection indication comprises a bit sequence, and the bit sequence is specifically used to instruct the second terminal to select from the one or more second side uplink resources Information about the selected side link resource.
The method according to claim 2, wherein the value of each bit in the bit sequence is a first indicator, and the side link resource selected by the second terminal is the one or more first indicators. All the second side uplink resources in the two side uplink resources.
The method according to claim 2, wherein the value of the bit sequence includes at least one first indicator and at least one second indicator, and the bit sequence is specifically used to indicate that the second terminal receives Part of the side link resource information selected by one or more second side link resources.
The method according to any one of claims 2-4, wherein the method further comprises:

The second terminal sends a first indication to the first terminal, where the first indication is used to indicate the proportion of the side link resources selected by the second terminal among the side link resources to which they belong.
The method according to claim 1, wherein the resource selection indication comprises a bit sequence, and the bit sequence is specifically used to indicate that the second terminal has not obtained the resources from the one or more second side uplink resources. Select the side link resource.
The method according to claim 6, wherein the value of each bit in the bit sequence is the second indicator.
A method for processing side link resources, which is characterized in that it includes:

The terminal obtains a resource selection indication from the second terminal, where the resource selection indication is used to indicate the result of the second terminal's selection of one or more second side link resources for retransmission of the transport block; the terminal Including a first terminal and/or a third terminal, where the transmission block is a transmission block that the first terminal transmits to the second terminal on the first side uplink resource;

The terminal determines the selection result of the one or more second side uplink resources by the second terminal according to the resource selection instruction.
The method according to claim 8, wherein when the terminal is the first terminal, the method further comprises:

The first terminal receives confirmation information from the second terminal, where the confirmation information is used to indicate that the second terminal successfully receives the transmission block.
The method according to claim 8 or 9, wherein the resource selection indication comprises a bit sequence, and the bit sequence is specifically used to indicate that the second terminal does not link from the one or more second side chains. Select the side link resource from the road resources,

Correspondingly, the terminal determining the selection result of the one or more second side uplink resources by the second terminal according to the resource selection instruction includes:

The terminal determines, according to the bit sequence, that the second terminal does not select a side link resource from the one or more second side link resources.
The method according to claim 10, wherein the terminal determines, according to the bit sequence, that the second terminal does not select a side link resource from the one or more second side link resources, include:

The value of each bit in the bit sequence is a second indicator, and the terminal determines that the second terminal does not select a side link resource from the one or more second side link resources.
The method according to claim 8 or 9, wherein the resource selection indication comprises a bit sequence, and the bit sequence is specifically used to instruct the second terminal to start from the one or more second side uplinks. The information of the selected side link resource in the resource, the terminal determining the selection result of the one or more second side link resources by the second terminal according to the resource selection instruction, includes:

The terminal determines the information of the side link resource selected by the second terminal from the one or more second side link resources according to the bit sequence.
The method according to claim 12, wherein the terminal determines, according to the bit sequence, the size of the side link resource selected by the second terminal from the one or more second side link resources. Information, including:

The value of each bit in the bit sequence is the first indicator, and the terminal determines that the side link resource selected by the second terminal from the one or more second side link resources includes the All the second side uplink resources in the one or more second side uplink resources; or,

The value of the bit sequence includes at least one first indicator and at least one second indicator, and the terminal determines according to the bit sequence that the second terminal is selected from the one or more second side uplink resources Selected part of the side link resources.
The method according to claim 12 or 13, wherein the method further comprises:

The terminal receives a first indication from the second terminal, where the first indication is used to indicate the proportion of the side link resources selected by the second terminal among the side link resources to which they belong.
A device for processing side link resources, which is characterized in that it comprises:

A determining unit, configured to determine that a transmission block from the first terminal is successfully received; the transmission block is a transmission block transmitted by the first terminal on the first side uplink resource;

The communication unit is configured to send confirmation information and a resource selection indication to the first terminal, where the confirmation information is used to indicate that the second terminal successfully receives the transmission block, and the resource selection indication is used to instruct the device to pair The selection result of one or more second side uplink resources used to retransmit the transport block.
The device according to claim 15, wherein the resource selection indication comprises a bit sequence, and the bit sequence is specifically used to instruct the device to select from the one or more second side uplink resources Information about the side link resource.
The device according to claim 16, wherein the value of each bit in the bit sequence is the first indicator, and the side link resource selected by the device is the one or more second side All the second side uplink resources in the uplink resources.
The device according to claim 16, wherein the value of the bit sequence comprises at least one first indicator and at least one second indicator, and the bit sequence is specifically used to indicate that the device receives from the one or Information about part of the side link resources selected by the plurality of second side link resources.
The device according to any one of claims 16-18, wherein the communication unit is further configured to send a first instruction to the first terminal, and the first instruction is used to indicate the device selected The proportion of the side link resources in the side link resources to which they belong.
The device according to claim 15, wherein the resource selection indication comprises a bit sequence, and the bit sequence is specifically used to indicate that the device does not select from the one or more second side uplink resources Side link resources.
The apparatus according to claim 20, wherein the value of each bit in the bit sequence is the second indicator.
A device for processing side link resources, which is characterized in that it comprises:

The communication unit is configured to obtain a resource selection indication from the second terminal, where the resource selection indication is used to indicate the result of the second terminal's selection of one or more second side uplink resources for retransmission of the transport block The transmission block is a transmission block that the communication unit transmits to the second terminal on the first side uplink resource;

The processing unit is configured to determine a selection result of the one or more second side uplink resources by the second terminal according to the resource selection instruction.
The apparatus according to claim 22, wherein the communication unit is further configured to receive confirmation information from the second terminal, and the confirmation information is used to indicate that the second terminal successfully receives the transmission block .
The device according to claim 22 or 23, wherein the resource selection indication comprises a bit sequence, and the bit sequence is specifically used to indicate that the second terminal does not link from the one or more second side chains. Select the side link resource from the road resources,

Correspondingly, the processing unit is specifically configured to determine, according to the bit sequence, that the second terminal does not select a side link resource from the one or more second side link resources.
The apparatus according to claim 24, wherein the value of each bit in the bit sequence is a second indicator, and the processing unit determines that the second terminal has not received information from the one or more second sides. Select the side link resource in the uplink resource.
The device according to claim 22 or 23, wherein the resource selection indication comprises a bit sequence, and the bit sequence is specifically used to instruct the second terminal to start from the one or more second side uplinks. The information of the side link resource selected in the resource,

The processing unit is specifically configured to determine the side link resource information selected by the second terminal from the one or more second side link resources according to the bit sequence.
The device according to claim 26, wherein the value of each bit in the bit sequence is a first indicator, and the processing unit determines that the second terminal is from the one or more second side rows The side link resources selected in the link resources include all the second side link resources in the one or more second side link resources; or,

The value of the bit sequence includes at least one first indicator and at least one second indicator, and the processing unit determines, according to the bit sequence, that the second terminal receives from the one or more second side uplink resources Part of the side link resources selected in.
The device according to claim 26 or 27, wherein the communication unit is further configured to receive a first indication from the second terminal, and the first indication is used to indicate the second terminal selected The proportion of the side link resources in the side link resources to which they belong.
A chip, characterized in that, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run a computer program or instruction to implement as claimed in claims 1-7, 8. In the method of any one of -14, the communication interface is used to communicate with modules other than the chip.
A communication device, characterized by comprising: a processor, the processor is coupled with a memory, the memory is used to store a computer program or instruction, and the processor is used to execute the computer program or instruction in the memory, so that the first The second terminal executes the method according to any one of claims 1-7.
A communication device, characterized by comprising: a processor, the processor is coupled with a memory, the memory is used to store a computer program or instruction, and the processor is used to execute the computer program or instruction in the memory, so that the terminal Perform the method of any one of claims 8-14.
A computer-readable storage medium, the storage medium is used to store a computer program or instruction, when the computer program or instruction is executed, the computer executes any one of claims 1-7, 8-14 Methods.
A communication system, characterized by comprising: the communication device according to any one of claims 15-21 and the communication device according to any one of claims 22-28.