WO2023198102A1

WO2023198102A1 - Sidelink sending method and apparatus, and terminal

Info

Publication number: WO2023198102A1
Application number: PCT/CN2023/087799
Authority: WO
Inventors: 杨聿铭; 纪子超
Original assignee: 维沃移动通信有限公司
Priority date: 2022-04-12
Filing date: 2023-04-12
Publication date: 2023-10-19
Also published as: CN116963008A

Abstract

The present application discloses a sidelink sending method and apparatus, and a terminal, which relate to the technical field of wireless communications. The sidelink sending method in the embodiments of the present application comprises: a first terminal identifies a resource conflict, and executes a first action according to a resource conflict identification result, the resource conflict being a conflict between a first resource of the first terminal and a reserved resource of a second terminal. The first resource comprises a transmission block sending resource, a PSFCH sending resource, and/or a PSFCH receiving resource corresponding to the transmission block sending resource.

Description

Side link transmission method, device and terminal

Cross-references to related applications

This application claims priority from Chinese Patent Application No. 202210383135.5 filed in China on April 12, 2022, the entire content of which is incorporated herein by reference.

Technical field

The present application belongs to the field of wireless communication technology, and specifically relates to a side link transmission method, device and terminal.

Background technique

The Long Term Evolution (LTE) system supports sidelink (SL) transmission, which is used for direct data transmission between end user equipment (User Equipment, UE, also called terminal) without using network equipment. LTE sidelink communicates based on broadcast. Although it can be used to support basic security communications of vehicle to everything (V2X), it is not suitable for other more advanced V2X services. The 5G New Radio (NR) system will support more advanced sidelink transmission designs, such as unicast, multicast or multicast, etc., thereby supporting more comprehensive service types.

LTE Sidelink communication has usually been divided into dedicated frequency bands. However, due to the big difference in the design of LTE Sidelink UE and NR Sidelink UE, the current NR Sidelink UE cannot directly access this frequency band for communication. As the number of NR Sidelink UEs increases and the number of LTE Sidelink UEs decreases, the utilization rate of the frequency bands allocated to LTE Sidelink UEs is low. Therefore, some methods need to be designed so that NR Sidelink UEs can operate in these frequency bands. Coexists with LTE Sidelink UE.

Contents of the invention

Embodiments of the present application provide a side link transmission method, device and terminal, which can solve the problem of how to enable different side link terminals to coexist in the same frequency band.

In the first aspect, a side link transmission method is provided, including:

The first terminal identifies the resource conflict and performs the first action according to the resource conflict identification result;

The resource conflict is a conflict between the first resource of the first terminal and the reserved resource of the second terminal;

Wherein, the first resources include transport block transmission resources, PSFCH transmission resources, and/or PSFCH reception resources corresponding to the transport block transmission resources.

In a second aspect, a side link data sending device is provided, including:

Identification module, used to identify resource conflicts; the resource conflicts are the first resource of the first terminal and the second terminal Conflict of reserved resources; the first resource includes transport block transmission resources, PSFCH transmission resources, and/or PSFCH reception resources corresponding to the transport block transmission resources;

The first execution module is configured to execute the first action according to the resource conflict identification result.

In a third aspect, a terminal is provided, including a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the above-mentioned first step is implemented. The steps of the side link sending method described in the aspect.

In a fourth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is used to identify resource conflicts and perform the first action according to the resource conflict identification results;

In a fifth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented.

In a sixth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the method described in the first aspect. .

In a seventh aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the method described in the first aspect. Method steps.

In the embodiment of the present application, the resource conflict problem of different side-link terminals can be solved, so that different side-link terminals can coexist in the same frequency band.

Description of the drawings

Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application;

Figure 2 is a schematic flow chart of resource allocation mode 2 of the side link;

Figure 3 is a schematic flow chart of the side link sending method according to the embodiment of the present application;

Figure 4 is a schematic structural diagram of a side link sending device according to an embodiment of the present application;

Figure 5 is a schematic structural diagram of a terminal according to an embodiment of the present application;

Figure 6 is a schematic diagram of the hardware structure of a terminal according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and "second" are distinguished objects It is usually one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (Long Term Evolution, LTE)/LTE Evolution (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (Time Division Multiple Access, TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and uses NR terminology in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th Generation , 6G) communication system.

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer. (Ultra-Mobile Personal Computer, UMPC), Mobile Internet Device (MID), Augmented Reality (AR)/Virtual Reality (VR) equipment, robots, wearable devices, WD), Vehicle User Equipment (VUE), Pedestrian User Equipment (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (Personal Computer, PC), teller machines or self-service machines and other terminal-side devices, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, Smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side device 12 may include an access network device or a core network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a wireless access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points or WiFi nodes, etc. The base stations may be called Node B, Evolved Node B (eNB), Access point, Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home Evolved B-node, Transmitting Receiving Point (TRP) or some other suitable terminology in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in this article In the application embodiment, the base station in the NR system is only introduced as an example, and the specific type of the base station is not limited.

The following is a brief explanation of the relevant communication vocabulary involved in this application.

1. NR Sidelink resource allocation

NR V2X defines two resource allocation modes (mode), one is mode1, which schedules resources for the base station; the other is mode2, where the UE decides what resources to use for transmission. At this time, the resource information may come from the base station's broadcast message or preconfigured information. If the UE works within the range of the base station and has a Radio Resource Control (RRC) connection with the base station, it can be mode1 and/or mode2. If the UE works within the range of the base station but has no RRC connection with the base station, it can only work in mode2. . If the UE is outside the base station range, it can only work in mode2 and perform V2X transmission based on preconfigured information.

For mode 2, the specific working method is as follows:

1) After the resource selection is triggered, the transmitting end (TX) UE first determines the resource selection window. The lower boundary of the resource selection window is at the T1 time after the resource selection is triggered, and the upper boundary of the resource selection is at the T2 time after the trigger, where T2 It is a value selected by the UE implementation method within the packet delay budget (Packet Delay Budget, PDB) transmitted by its Transport Block (TB). T2 is not earlier than T1.

2) Before resource selection, the UE needs to determine the candidate resource set for resource selection, based on the reference signal received power (RSRP) of other UEs measured on the resources within the resource selection window and Compare the corresponding RSRP threshold (threshold). If the RSRP is lower than the RSRP threshold, then the resource can be included in the alternative resource set.

3) After the resource set is determined, the UE randomly selects transmission resources from the candidate resource set. In addition, the UE can reserve transmission resources for subsequent transmissions during this transmission.

The specific process can be referred to Figure 2.

2. Re-evaluation of NR Sidelink resource selection

In Mode 2 resource allocation mode, the re-evaluation mechanism of resource selection is supported. A brief description of this mechanism is as follows.

In order to determine whether the selected but unreserved resources (Physical Sidelink Control Channel (PSCCH) or Physical Sidelink Shared Channel (PSSCH) resources) are still idle or have low interference, the UE status, the UE re-evaluates resource selection at least at 'm-T3' time, 'm' time is the time when the reservation information of the resource is first sent, and T3 at least includes the duration of the UE's resource selection processing. The UE re-executes the resource selection step at least in 'm-T3' to obtain a set of alternative resources. If the resource selected by the UE is still in the alternative resource set, the UE does not need to perform resource reselection; otherwise, the UE selects a new resource in the alternative set. Transport resources.

3. NR SL resource pre-emption (Resource pre-emption)

In Mode 2 resource allocation mode, the resource preemption (pre-emption) mechanism is supported. A brief description of this mechanism is as follows.

The resources reserved by a UE overlap (partially overlap) with the resources reserved or selected by other UEs with higher priority services, if the SL-RSRP measurement value of the UE on the relevant resources is greater than an associated SL-RSRP When the threshold value is reached, the UE will trigger resource reselection.

In order to determine whether the reserved resources (PSCCH or PSSCH resources) have been preempted, the UE performs preemption detection at least at 'm-T3' time. 'm' time is the time when the resource is located or the reservation information of the resource is sent. time, T3 at least includes the duration for the UE to perform resource selection processing. The UE re-executes the resource selection step at least in 'm-T3' to obtain a set of alternative resources. If the resource selected by the UE is still in the alternative resource set, the UE does not need to perform resource reselection; otherwise, the UE selects a new transmission resource in the alternative set.

The side link transmission method, device and terminal provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios.

Please refer to Figure 3. This embodiment of the present application provides a side link transmission method, including:

Step 31: The first terminal identifies the resource conflict and performs the first action according to the resource conflict identification result;

Wherein, the resource conflict is a conflict between the first resource of the first terminal and the reserved resource of the second terminal; wherein the first resource includes a transport block transmission resource, a physical side link feedback channel (Physical Sidelink Feedback Channel, PSFCH) transmission resources, and/or PSFCH reception resources corresponding to the transport block transmission resources.

In the embodiment of this application, optionally, the first terminal may be an NR sidelink terminal, and the second terminal may be an LTE sidelink terminal. Since the resource conflict problem between the NR sidelink terminal and the LTE sidelink terminal can be solved, the NR Sidelink Terminals can directly access the dedicated frequency band of LTE sidelink for communication, improving frequency band utilization and allowing NR Sidelink terminals and LTE Sidelink terminals to dynamically coexist. Of course, in some other embodiments of this application, the first terminal and the second terminal may also be terminals of the same type, for example, both NR sidelink terminals, or both LTE sidelink terminals, or other different types of terminals. terminal.

Since the LTE sidelink terminal does not have a PSFCH design, the PSFCH sent by the NR sidelink terminal will be interfered by the data sent by the LTE sidelink terminal. Therefore, when considering resource conflicts, it may also be necessary to consider the PSFCH sending resources and PSFCH receiving resources and the second terminal. Conflicts in reserved resources.

In this embodiment of the present application, optionally, the first action includes at least one of the following:

Send transmission blocks;

Send PSFCH;

No transmission blocks are sent;

PSFCH is not transmitted.

In this embodiment of the present application, optionally, the first terminal identifies a resource conflict before transmitting the transport block and/or PSFCH, and performs the first action based on the resource conflict identification result, that is, when the first terminal performs resource selection, Regardless of the reserved resources of the second terminal, before transmitting the transport block and/or PSFCH, identify resource conflicts, and then determine whether to transmit the transport block and/or PSFCH based on the resource conflict identification results, thereby making as few changes as possible The existing NR Sidelink design architecture achieves the purpose of minimal protocol modification.

In this embodiment of the present application, optionally, the first terminal identifying resource conflicts further includes: the first terminal detects the control information (Sidelink Control Information, SCI) sent by the second terminal, and determines the resource conflict based on the detected information. The control information determines the reserved resources of the second terminal. The control information includes information about reserved resources of the second terminal. In the existing standards, the PSCCH designs of NR Sidelink terminals and LTE Sidelink terminals are different, so they cannot receive SCI from each other, which will lead to the inability to recognize resource reservation information between the two types of terminals, making it impossible to avoid resource conflicts. Therefore, in the coexistence frequency band, it is necessary to at least support the NR Sidelink terminal to identify the control information of the LTE Sidelink terminal. For example, when the NR Sidelink terminal performs detection, it not only performs detection and decoding at the SCI position of the NR Sidelink, but also performs detection and decoding at the possible SCI transmission position of the LTE Sidelink. Detection and decoding can obtain the reserved resources of NR Sidelink and LTE Sidelink at the same time. Therefore, the reserved resources of the LTE Sidelink terminal can be avoided during resource selection and/or re-evaluation preemption check, so that the performance of the LTE Sidelink terminal can be guaranteed.

In this embodiment of the present application, optionally, the RSRP value corresponding to the reserved resources of the second terminal is determined by protocol predefinition, network preconfiguration, network configuration, terminal preconfiguration or terminal configuration. This can avoid the problem that the first terminal may not be able to obtain the accurate RSRP value of the second terminal. In the existing standards, the demodulation reference signal (DMRS) design of NR Sidelink terminals and LTE Sidelink terminals is different. Since RSRP is obtained based on DMRS, the RSRP values detected between the two types of terminals are different. Accurately, the RSRP measurement cannot even be obtained. In this case, when the NR Sidelink terminal detects the LTE Sidelink terminal or the LTE Sidelink terminal detects the reserved resources of the NR Sidelink terminal, the corresponding RSRP value is replaced by a preset value, and the terminal selects resources based on this preset value .

In this embodiment of the present application, optionally, the side link sending method further includes: the reserved resources of the second terminal are selected from the candidate resource set of the second terminal, and the candidate resources of the second terminal are The set is sorted and determined according to the Received Signal Strength Indication (RSSI) of the resource, which can avoid the problem that the second terminal cannot obtain the RSRP value of the second terminal, and can directly select the reservation of the second terminal based on the RSSI. resource.

In this embodiment of the present application, optionally, performing the first action according to the resource conflict identification result includes: the first terminal performs the first action according to whether the resource conflict identification result satisfies the first condition.

In some embodiments of the present application, optionally, the first terminal performs a first action based on whether the resource conflict identification result satisfies a first condition, including at least one of the following:

If the resource conflict identification result satisfies the first condition, the first terminal does not send the transport block and/or PSFCH;

If the resource conflict identification result does not meet the first condition, the first terminal transmits the transport block and/or PSFCH.

In the embodiment of this application, optionally, the first condition includes at least one of the following:

1) The reserved resources of the second terminal overlap with the first resources of the first terminal;

2) The priority of the resources reserved by the second terminal is greater than the first threshold; that is, when the priority of the resources reserved by the second terminal is greater than the preset condition, the first terminal is allowed to avoid the second terminal by canceling the current transmission and other actions. reserved resources to ensure the transmission reliability of the second terminal. The priority of the reserved resource is the priority indicated in the control information of the detected reserved resource.

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the reserved resources of the second terminal have priority. The level is greater than the first threshold, that is, first determine whether the reserved resources of the second terminal coincide with the first resources of the first terminal, and if they overlap, then determine whether the priority of the reserved resources of the second terminal greater than the first threshold.

3) The priority of the transmission block is less than the second threshold, and the priority of the resources reserved by the second terminal is greater than the first threshold; that is, when the priority of the resources reserved by the second terminal is greater than the preset condition, then When the sending TB of the first terminal is less than the preset condition, the first terminal is allowed to avoid the reserved resources of the second terminal by canceling the current sending, etc., which not only protects the TB of the first terminal with a higher priority, but also allows the first terminal to Avoid the second terminal to ensure the transmission reliability of the second terminal.

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the priority of the transmission block is less than the second threshold, And the priority of the reserved resources of the second terminal is greater than the first threshold, that is, first determine whether the reserved resources of the second terminal overlap with the first resources of the first terminal, and if they overlap, then determine whether It is satisfied that: the priority of the transmission block is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the first threshold.

4) The priority of the PSFCH is less than the second threshold, and the priority of the resources reserved by the second terminal is greater than the first threshold; that is, when the priority of the resources reserved by the second terminal is greater than the preset condition, the first When the priority of the PSFCH of one terminal is lower than the preset condition, the first terminal is allowed to avoid the reserved resources of the second terminal by canceling the current transmission, etc., which not only protects the PSFCH of the first terminal with a higher priority, but also allows the first terminal to avoid the reserved resources of the second terminal. The terminal avoids the second terminal to ensure the transmission reliability of the second terminal.

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, the priority of the PSFCH is less than the second threshold, and The priority of the reserved resources of the second terminal is greater than the first threshold. That is, first determine whether the reserved resources of the second terminal overlap with the first resources of the first terminal. If they overlap, then determine whether they meet the requirements. : The priority of the PSFCH is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the first threshold.

5) The priority of the resources reserved by the second terminal is greater than the priority of the transport block; that is, when the priority of the resources reserved by the second terminal is greater than the priority of the first terminal sending TB, the first terminal is allowed to pass Actions such as canceling the current transmission avoid the reserved resources of the second terminal to ensure the transmission reliability of the second terminal.

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the reserved resources of the second terminal have priority. level is greater than the priority of the transport block, i.e., First, it is determined whether the reserved resources of the second terminal coincide with the first resources of the first terminal. If they overlap, it is then determined whether the priority of the reserved resources of the second terminal is greater than that of the transport block. priority.

6) The priority of the resources reserved by the second terminal is greater than the priority of the PSFCH; that is, when the priority of the resources reserved by the second terminal is greater than the priority of the first terminal sending PSFCH, the first terminal is allowed to cancel the Actions such as current sending avoid the reserved resources of the second terminal to ensure the transmission reliability of the second terminal.

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the reserved resources of the second terminal have priority. The priority level is greater than the priority of the PSFCH, that is, first determine whether the reserved resources of the second terminal coincide with the first resources of the first terminal, and if they overlap, then determine whether the reserved resources of the second terminal are satisfied. The priority of the reserved resources is greater than the priority of the PSFCH.

7) The priority of the transport block is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the transport block; that is, when the priority of the first terminal sending TB is less than the preset condition and is less than the priority of the second terminal's reserved resources, the first terminal is allowed to avoid the second terminal's reserved resources by canceling the current transmission and other actions, thereby ensuring the transmission reliability of the second terminal and ensuring that the first terminal has a higher priority. transmission.

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the priority of the transmission block is less than the second threshold, And the priority of the reserved resources of the second terminal is greater than the priority of the transport block. That is, first determine whether the reserved resources of the second terminal overlap with the first resources of the first terminal. If they overlap, , and then determine whether it is satisfied that: the priority of the transport block is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the transport block.

8) The priority of the PSFCH is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the PSFCH; that is, when the priority of the first terminal sending PSFCH is less than the preset condition and less than When the second terminal reserves the priority of resources, the first terminal is allowed to avoid the reserved resources of the second terminal by canceling the current transmission and other actions, thereby ensuring the transmission reliability of the second terminal and ensuring the transmission of the first terminal with a higher priority.

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, the priority of the PSFCH is less than the second threshold, and The priority of the reserved resources of the second terminal is greater than the priority of the PSFCH, that is, first determine whether the reserved resources of the second terminal overlap with the first resources of the first terminal, and if they overlap, then Determine whether it is satisfied that: the priority of the PSFCH is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the PSFCH.

9) The priority of the resources reserved by the second terminal is greater than the second threshold, and the priority of the resources reserved by the second terminal is greater than the priority of the transport block; that is, when the resource reserved by the second terminal When the priority is greater than the preset condition and greater than the priority of the first terminal's transmission block, the first terminal is allowed to avoid the reserved resources of the second terminal by canceling the current transmission and other actions, thereby ensuring the transmission reliability of the second terminal and ensuring the first terminal's transmission reliability. Transmissions with higher terminal priority.

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the priority of the reserved resources of the second terminal is greater than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the transport block, that is, first determine the reserved resources of the second terminal and the first resources of the first terminal. Whether they overlap, and if so, determine whether they meet: the reserved resources of the second terminal. The priority of the source is greater than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the transport block.

10) The priority of the reserved resources of the second terminal is greater than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the PSFCH; that is, when the priority of the reserved resources of the second terminal When the level is greater than the preset condition and greater than the priority of the first terminal's PSFCH, the first terminal is allowed to avoid the reserved resources of the second terminal by canceling the current transmission and other actions, thereby ensuring the transmission reliability of the second terminal and ensuring the priority of the first terminal. Larger level of transmission.

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the priority of the reserved resources of the second terminal is greater than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the PSFCH, that is, first determine whether the reserved resources of the second terminal and the first resource of the first terminal are overlap, and if they overlap, then determine whether: the priority of the reserved resources of the second terminal is greater than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the PSFCH.

11) The RSRP corresponding to the reserved resources of the second terminal is greater than the third threshold;

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the reserved resources corresponding to the second terminal RSRP is greater than the third threshold, that is, first determine whether the reserved resources of the second terminal coincide with the first resources of the first terminal, and if they overlap, then determine whether: the reserved resources of the second terminal correspond to The RSRP is greater than the third threshold.

12) The number of overlaps between the reserved resources of the second terminal and the first resources of the first terminal is less than the fourth threshold; that is, when the number of resource overlaps, or expressed as the number of resource conflicts, is less than the preset value, then the The number of times a terminal avoids the reserved resources of the second terminal by canceling the current transmission and other actions will be less than the preset value. Therefore, the first terminal is allowed to avoid the reserved resources of the second terminal by canceling the current transmission and other actions to ensure that the second terminal Terminal transmission reliability.

Further optionally, the first condition includes: within a preset period, the number of overlaps between the reserved resources of the second terminal and the first resources of the first terminal is less than a fourth threshold. The preset period is a time window, N Hybrid Automatic Repeat request (HARQ) processes, or N TB transmission block transmissions, where N is a positive integer greater than or equal to 1. 13) The number or proportion of times or proportions in which the first terminal continuously or collectively performs resource re-evaluation, resource preemption, resource re-selection or packet loss is less than the fifth threshold. That is, the number of times the first terminal performs resource re-evaluation, resource preemption, resource re-selection or packet loss due to resource conflicts is directly counted. If it is less than the preset value, the first terminal is allowed to avoid the second terminal through resource re-selection or packet loss. reserved resources.

Further optionally, the first condition includes: within a preset period, the number or proportion of times or proportions in which the first terminal continuously or collectively performs resource re-evaluation, resource preemption, resource re-selection or packet loss is less than the fifth threshold. The preset period is within a time window, N HARQ processes (processes) or N TB transmission block transmission, and N is a positive integer greater than or equal to 1.

In some other embodiments of the present application, optionally, the first terminal performs a first action based on whether the resource conflict identification result satisfies the first condition, including at least one of the following:

If the resource conflict identification result satisfies the first condition, the first terminal transmits the transport block and/or PSFCH;

If the resource conflict identification result does not meet the first condition, the first terminal does not send the transport block and/or PSFCH.

1) The reserved resources of the second terminal do not overlap with the first resources of the first terminal; if the resources do not overlap, the transmission block or PSFCH can be sent normally.

2) The reserved resources of the second terminal overlap with the first resources of the first terminal;

3) The priority of the reserved resources of the second terminal is less than the first threshold;

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the reserved resources of the second terminal have priority. The level is less than the first threshold, that is, first determine whether the reserved resources of the second terminal coincide with the first resources of the first terminal, and if they overlap, then determine whether they satisfy: the reserved resources of the second terminal The priority is less than the first threshold.

4) The priority of the transmission block is greater than the second threshold;

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the priority of the transmission block is greater than the second threshold , that is, first determine whether the reserved resources of the second terminal and the first resource of the first terminal overlap, and if they overlap, then determine whether: the priority of the transmission block is greater than the second threshold.

5) The priority of the PSFCH is greater than the second threshold;

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the priority of the PSFCH is greater than the second threshold, That is, it is first determined whether the reserved resources of the second terminal and the first resources of the first terminal overlap, and if they overlap, it is then determined whether the priority of the PSFCH is greater than the second threshold.

6) The priority of the reserved resources of the second terminal is smaller than the priority of the transport block;

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the reserved resources of the second terminal have priority. The level is smaller than the priority of the transport block, that is, first determine whether the reserved resources of the second terminal coincide with the first resources of the first terminal, and if they overlap, then determine whether they satisfy: The priority of the reserved resources is lower than the priority of the transport block.

7) The priority of the reserved resources of the second terminal is smaller than the priority of the PSFCH;

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the reserved resources of the second terminal have priority. The priority level is smaller than the priority level of the PSFCH, that is, first determine whether the reserved resources of the second terminal coincide with the first resources of the first terminal, and if they overlap, then determine whether the reserved resources of the second terminal are satisfied. The priority of the reserved resources is lower than the priority of the PSFCH.

8) The RSRP corresponding to the reserved resources of the second terminal is less than the third threshold;

In this embodiment of the present application, optionally, the first condition includes: the reserved resources of the second terminal coincide with the first resources of the first terminal, and the reserved resources corresponding to the second terminal RSRP is less than the third threshold, that is, first determine whether the reserved resources of the second terminal and the first resources of the first terminal overlap, and if they overlap, then determine whether Whether it is satisfied: the RSRP corresponding to the reserved resources of the second terminal is less than the third threshold.

9) The number of overlaps between the reserved resources of the second terminal and the first resources of the first terminal is greater than the fourth threshold;

Further optionally, the first condition includes: within a preset period, the number of times the reserved resources of the second terminal overlap with the first resources of the first terminal is greater than a fourth threshold. The preset period is within a time window, N HARQ processes (processes) or N TB transmission block transmission, and N is a positive integer greater than or equal to 1.

10) The number or proportion of times or proportions in which the first terminal performs resource re-evaluation, resource preemption, resource re-selection or packet loss continuously or in total is greater than the fifth threshold.

Further optionally, the first condition includes: within a preset period, the number or proportion of continuous or total resource re-evaluation, resource preemption, resource re-selection or packet loss performed by the first terminal is greater than the fifth threshold. The preset period is within a time window, N HARQ processes (processes) or N TB transmission block transmission, and N is a positive integer greater than or equal to 1.

Further optionally, the first condition includes: due to a conflict between the first resource of the first terminal and the reserved resource of the second terminal, resource re-evaluation, resource preemption, resource reselection or packet loss are continuously or collectively performed. The number or proportion is greater than the fifth threshold.

In the embodiment of the present application, after the transmission of the transport block and/or PSFCH is not performed for many times, in order to ensure the transmission performance, the reserved resources of the second terminal are not considered and the transmission block and/or PSFCH is normally transmitted.

In the above embodiments of the present application, optionally, at least one of the first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold is predefined by protocol, network preconfiguration, network configuration , terminal preconfiguration or terminal configuration.

In this embodiment of the present application, optionally, the first terminal identifying a resource conflict includes: the first terminal identifying a resource conflict at a first time, and the first time is the first resource of the first terminal at the latest. The previous N time units, N is an integer.

In this embodiment of the present application, optionally, the side link sending method further includes: the first terminal identifying a resource conflict, and performing the first action based on the resource conflict identification result further includes:

If the second terminal enables Transport Block Size (TBS) scaling (Scaling), it does not detect whether the reserved resources of the second terminal correspond to the PSFCH resources and/or the PSFCH resources of the transport block. If there is a conflict, PSFCH transmission and/or reception is performed. That is, when the second terminal enables transmission block size scaling, the impact of the interference of the PSFCH sent by the first terminal on the data of the second terminal will be reduced. Therefore, in some scenarios, such as the scenario where the performance of the second terminal is prioritized, it can It is not necessary to consider the conflict between the transmission and/or reception resources of the PSFCH and the reserved resources of the second terminal. At this time, only the conflict between the transport block transmission resources and the reserved resources of the second terminal needs to be considered.

In this embodiment of the present application, optionally, after the first terminal does not send the transport block and/or PSFCH, it further includes: the first terminal performs a second action, and the second action includes at least the following: One item:

1) Wait for the next reserved resource of the first terminal; that is, the current resource is not sent, and the next retransmission resource selected by the first terminal is cached and then sent.

In this embodiment of the present application, optionally, the next reserved resource may be the next non-periodic reserved resource of the first terminal.

2) Trigger resource re-evaluation or preemption process;

3) Trigger resource reselection; that is, the first terminal triggers the resource reselection process and selects other resources for transmission.

4) Discard the transport block and/or PSFCH;

5) Report Negative ACKnowledgement (NACK) to the data link layer (Medium Access Control, MAC) layer;

In the embodiment of this application, reporting NACK to the MAC layer is particularly important in the case of NACK-based groupcast.

6) Trigger resources are randomly selected;

That is, resources are randomly selected for transmission of transport blocks and/or PSFCH.

7) Select resources in the second resource pool to transmit the transport block and/or PSFCH, wherein the first resource and the reserved resource of the second terminal are located in the first resource pool.

In this embodiment of the present application, optionally, the second resource pool may be a resource pool dedicated to performing the second action of this application, or may be another resource pool different from the first resource pool.

In this embodiment of the present application, optionally, the side link sending method further includes: the first terminal performing a third action according to the second condition, and the third action includes: adjusting the first condition. That is, dynamically adjusting the determination rule of the first condition can further ensure the transmission of the first terminal.

In this embodiment of the present application, optionally, the second condition includes at least one of the following:

1) The number of overlaps between the reserved resources of the second terminal and the first resources of the first terminal is greater than the fourth threshold;

Further optionally, the second condition includes: within a preset period, the number of times the reserved resources of the second terminal overlap with the first resources of the first terminal is greater than a fourth threshold; the preset period It is a time window, N HARQ processes (processes) or N TB transmission block transmission, and N is a positive integer greater than or equal to 1. That is, when there are many resource conflicts, the judgment rules are dynamically adjusted to give priority to ensuring the transmission reliability of the first terminal or the second terminal.

2) The reserved resources of the second terminal coincide with the subsequent reserved resources of the first terminal and/or the PSFCH resources corresponding to the subsequent reserved resources; that is, when the subsequent reserved resources of the first terminal When it also overlaps with the reserved resources of the second terminal, the transmission reliability of the first terminal can be ensured by adjusting the first condition in time to prevent the first terminal from continuously reselecting resources or even losing packets.

3) The number or proportion of times or proportions in which the first terminal performs resource re-evaluation, resource preemption, resource re-selection or packet loss continuously or in total is greater than the fifth threshold. That is, when the number or proportion of resource re-evaluation, resource preemption, resource re-selection or packet loss performed by the first terminal is large, the transmission reliability of the first terminal may be greatly affected, and the first condition needs to be adjusted to improve Transmission reliability of the first terminal.

Further optionally, the second condition includes: within a preset period, the number or proportion of times or proportions in which the first terminal continuously or collectively performs resource re-evaluation, resource preemption, resource re-selection or packet loss is greater than the fifth threshold; so The preset period is a time window, N HARQ processes or N TB transmission block transmission, and N is a positive integer greater than or equal to 1.

In this embodiment of the present application, optionally, the adjusting the first condition includes: adjusting the first of the first conditions. At least one of the threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold.

In this embodiment of the present application, optionally, the third action further includes at least one of the following:

1) Trigger resource reselection;

2) Discard the transport block and/or PSFCH;

3) Trigger resource random selection;

4) Select resources in the second resource pool to transmit the transport block and/or PSFCH, wherein the first resource and the reserved resource of the second terminal are located in the first resource pool.

In this embodiment of the present application, optionally, the side link transmission method further includes: excluding the Mth resource reselection when the first terminal determines the candidate resource set for side link transmission. The reserved resources of the second terminal, M is an integer greater than or equal to 1. That is, after the first terminal performs the Mth resource reselection, it no longer follows the previous principle of independent resource selection, but in the resource selection process, the reserved resources of the second terminal that meet the exclusion conditions are excluded. Guarantee your own transmission.

The above-mentioned side link sending method of the present application will be described below in combination with specific application scenarios.

Example 1 of this application:

In the context that the LTE sidelink terminal cannot detect the reserved resources of the NR sidelink terminal, the NR sidelink terminal can be relied on to avoid the reserved resources of the LTE sidelink terminal to ensure that the reserved resources of the two types of terminals do not conflict to the greatest extent. If the existing resource allocation process of NR sidelink terminal is modified to achieve the above purpose, there will be more modifications to the standard. Therefore, in the embodiment of this application, the NR sidelink terminal does not consider the reserved resources of the LTE sidelink terminal when selecting resources, but identifies resource conflicts based on the received reserved resource information of the LTE sidelink terminal before transmitting the transmission block and/or PSFCH. , if the resource conflict identification result indicates that there is no resource conflict, then the selected resource will be sent normally. If the resource conflict identification result indicates that there is a resource conflict, the transmission block and/or PSFCH will not be sent.

The determination rules for resource conflicts (i.e., the above-mentioned first condition) may include the first resource of the NR sidelink terminal (including transport block transmission resources, PSFCH transmission resources, and/or PSFCH reception resources corresponding to the transport block transmission resources) and the LTE sidelink terminal. Whether the reserved resources overlap. When the resources do not overlap, that is, there is no resource conflict, the NR sidelink terminal can naturally send transmission blocks and/or PSFCH. When the resources overlap, when ensuring the transmission reliability of the LTE sidelink terminal first, the NR sidelink terminal gives up the transmission or reselects the resource to avoid interference with the data sent by the LTE sidelink terminal. In addition, conditions such as priority comparison can also be added to ensure the performance of NR Sidelink terminals. For example, when the priority of reserved resources of LTE sidelink terminals is higher than the preset threshold or higher than NR When the priority of the transmission block and/or PSFCH of the sidelink terminal is determined, the NR sidelink terminal gives up sending or reselects resources. Alternatively, conditions can be added or replaced. For example, when the RSRP of the reserved resources of the LTE sidelink terminal is greater than the preset threshold, the NR sidelink terminal gives up sending or reselects resources.

Implementation Mode 2 of this application:

When the LTE sidelink terminal has a large number of transmission blocks, if the NR sidelink terminal meets the resource conflict determination conditions (i.e., the first condition above), it will cancel the transmission or reselect the resource, which will cause a great deal to its own transmission reliability or transmission delay. Impact. Therefore, some restrictions are needed to ensure the transmission of transmission blocks and/or PSFCH of NR sidelink terminals. For example, if within a period of time, the first resource of the NR sidelink terminal (including transport block transmission resources, PSFCH transmission resources, and/or PSFCH reception resources corresponding to the transport block transmission resources) conflicts with the reserved resources of the LTE sidelink terminal The number of times, or the number of times the first resource of the NR sidelink terminal has been canceled due to conflict with the reserved resources of the LTE sidelink terminal is greater than a preset threshold value, the NR sidelink terminal will no longer cancel its own transmission due to meeting the determination conditions of resource conflict. Send, or adjust the relevant thresholds in the resource conflict determination conditions, making it more difficult for the NR sidelink terminal to meet the resource conflict determination conditions and cancel its own transmission.

Implementation method three of this application:

When the NR sidelink terminal cancels the transmission of the current transport block and/or PSFCH, it can directly wait until its next non-periodic reserved resource before transmitting the transport block and/or PSFCH, or it can perform resource reselection and reselect resources. Transmission of transport blocks and/or PSFCH is performed, or even transport blocks and/or PSFCH may be discarded. Similarly, when the NR sidelink terminal performs resource reselection multiple times to avoid the reserved resources of the LTE sidelink terminal, consider considering the reserved resources of the LTE sidelink terminal in the next resource reselection, thereby reducing the possibility that the next transmission will still be unable to proceed. , to protect your own transmission.

The fourth implementation mode of this application:

If the LTE sidelink terminal enables TBS Scaling, that is, compared with R14, the modulation and coding scheme (MCS) has been modified and the parameters of TBS scaling have been introduced, which can be used to reduce decoding performance due to punctures of certain symbols. Affected circumstances. This technology can also be used to deal with the problem that the PSSCH transmission of the LTE sidelink terminal is affected by the PSFCH of the NR sidelink terminal. Therefore, when TBS Scaling is enabled, the NR sidelink terminal is allowed to transmit and/or PSFCH without detecting whether the reserved resources of the second terminal conflict with the PSFCH resources and/or the PSFCH resources corresponding to the transport block. take over.

In the above embodiment, since the NR sidelink terminal does not consider the reserved resources of the LTE sidelink terminal when selecting resources, the existing resource allocation mechanism does not need to be modified. Considering the reserved resources of LTE sidelink terminals before transmitting the transport block and/or PSFCH can also achieve the effect of avoiding the reserved resources of LTE sidelink terminals. At the same time, the determination criteria of resource conflict can also be dynamically adjusted to protect NR sidelink terminals. own transmission.

For the side link sending method provided by the embodiment of the present application, the execution subject may be a side link sending device. In the embodiment of the present application, the side link sending device performing the side link sending method is taken as an example to illustrate the side link sending device provided by the embodiment of the present application.

Please refer to Figure 4. This embodiment of the present application also provides a side link data sending device 40, which includes:

The identification module 41 is used to identify resource conflicts; the resource conflicts are conflicts between the first resources of the first terminal and the reserved resources of the second terminal; the first resources include transport block transmission resources and PSFCH transmission resources, and/or the PSFCH receiving resources corresponding to the transport block sending resources;

The first execution module 42 is configured to execute the first action according to the resource conflict identification result.

In this embodiment of the present application, optionally, the side link data sending device 40 further includes:

A detection module, used to detect the control information sent by the second terminal;

A determining module, configured to determine reserved resources of the second terminal according to the detected control information.

Send transmission blocks;

Send PSFCH;

No transmission blocks are sent;

PSFCH is not transmitted.

In this embodiment of the present application, optionally, the first execution module 42 is configured to execute the first action according to whether the resource conflict identification result satisfies the first condition.

In this embodiment of the present application, optionally, the first execution module 42 is configured to not transmit the transport block and/or PSFCH if the resource conflict identification result satisfies the first condition; if the If the resource conflict identification result does not meet the first condition, the transport block and/or PSFCH is sent.

The reserved resources of the second terminal coincide with the first resources of the first terminal;

The priority of the reserved resources of the second terminal is greater than the first threshold;

The priority of the transmission block is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the first threshold;

The priority of the PSFCH is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the first threshold;

The priority of the reserved resources of the second terminal is greater than the priority of the transport block;

The priority of the reserved resources of the second terminal is greater than the priority of the PSFCH;

The priority of the transport block is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the transport block;

The priority of the PSFCH is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the PSFCH;

The priority of the reserved resources of the second terminal is greater than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the transport block;

The priority of the reserved resources of the second terminal is greater than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the PSFCH;

The RSRP corresponding to the reserved resources of the second terminal is greater than the third threshold;

The number of overlaps between the reserved resources of the second terminal and the first resources of the first terminal is less than a fourth threshold;

The number or proportion of times or proportions in which the first terminal performs resource re-evaluation, resource preemption, resource re-selection or packet loss continuously or in total Less than the fifth threshold.

In this embodiment of the present application, optionally, the first execution module 42 is configured to send the transport block and/or PSFCH if the resource conflict identification result satisfies the first condition; if the resource conflict identification result satisfies the first condition, If the conflict identification result does not meet the first condition, the transmission block and/or PSFCH will not be sent.

The reserved resources of the second terminal do not overlap with the first resources of the first terminal;

The priority of the reserved resources of the second terminal is less than the first threshold;

The priority of the transmission block is greater than the second threshold;

The priority of the PSFCH is greater than the second threshold;

The priority of the reserved resources of the second terminal is smaller than the priority of the transport block;

The priority of the reserved resources of the second terminal is smaller than the priority of the PSFCH;

The RSRP corresponding to the reserved resources of the second terminal is less than the third threshold;

The number of overlaps between the reserved resources of the second terminal and the first resources of the first terminal is greater than a fourth threshold;

The number or proportion of times or proportions in which the first terminal performs resource re-evaluation, resource preemption, resource re-selection or packet loss continuously or in total is greater than the fifth threshold.

In the embodiment of this application, optionally, at least one of the first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold is predefined by protocol, network preconfiguration, network configuration, terminal preset configuration or terminal configuration.

In this embodiment of the present application, an optional second execution module is configured to perform a second action after not transmitting the transport block and/or PSFCH. The second action includes at least one of the following:

Waiting for the next reserved resource of the first terminal;

Trigger resource re-evaluation or preemption process;

Trigger resource reselection;

discard the transport block and/or PSFCH;

Report NACK to the MAC layer;

Trigger resources are randomly selected;

Select resources in the second resource pool to transmit the transport block and/or PSFCH, wherein the first resource and the reserved resource of the second terminal are located in the first resource pool.

In this embodiment of the present application, optionally, the identification module 41 is used to identify resource conflicts at a first moment, and the first moment is at the latest N time units before the first resource of the first terminal, N is an integer.

The third execution module is configured to execute a third action according to the second condition, where the third action includes: adjusting the first condition.

The reserved resources of the second terminal overlap with the subsequent reserved resources of the first terminal and/or the PSFCH resources corresponding to the subsequent reserved resources;

In this embodiment of the present application, optionally, adjusting the first condition includes: adjusting at least one of the first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold in the first condition. One item.

Trigger resource reselection;

discard the transport block and/or PSFCH;

Trigger resources are randomly selected;

A retransmission module configured to exclude the reserved resources of the second terminal when the first terminal performs the Mth resource reselection and determines the candidate resource set for side link transmission, where M is greater than or equal to 1. integer.

In this embodiment of the present application, optionally, the RSRP value corresponding to the detected reserved resources of the second terminal is determined by protocol predefinition, network preconfiguration, network configuration, terminal preconfiguration or terminal configuration.

In this embodiment of the present application, optionally, the reserved resources of the second terminal are selected from a candidate resource set of the second terminal, and the candidate resource set of the second terminal is determined according to the RSSI ranking of the resources.

In this embodiment of the present application, optionally, the first execution module 42 is also configured to not detect the reserved resources of the second terminal and the PSFCH if the second terminal enables transmission block size scaling. Whether the PSFCH resources corresponding to the resources and/or transport blocks conflict, the PSFCH is sent and/or received.

The side link sending device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal. For example, terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

The side link sending device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 3 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Optionally, as shown in Figure 5, this embodiment of the present application also provides a terminal 50, which includes a processor 51 and a memory 52. The memory 52 stores programs or instructions that can be run on the processor 51. The program Or when the instruction is executed by the processor 51, each step of the above-mentioned side link transmission method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, the details will not be described here.

An embodiment of the present application also provides a terminal, including a processor and a communication interface. The processor is used to identify resource conflicts; the resource conflicts are conflicts between the first resources of the first terminal and the reserved resources of the second terminal; The first resource package Including transport block transmission resources, PSFCH transmission resources, and/or PSFCH reception resources corresponding to the transport block transmission resources; the first action is performed according to the resource conflict identification result. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 6 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

The terminal 60 includes but is not limited to: a radio frequency unit 61, a network module 62, an audio output unit 63, an input unit 64, a sensor 65, a display unit 66, a user input unit 67, an interface unit 68, a memory 69, a processor 610, etc. At least some parts.

Those skilled in the art can understand that the terminal 60 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 610 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 6 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.

It should be understood that in the embodiment of the present application, the input unit 64 may include a graphics processing unit (Graphics Processing Unit, GPU) 641 and a microphone 642. The graphics processor 641 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras). The display unit 66 may include a display panel 661, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 67 includes at least one of a touch panel 671 and other input devices 672 . Touch panel 671 is also called a touch screen. The touch panel 671 may include two parts: a touch detection device and a touch controller. Other input devices 672 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 61 can transmit it to the processor 610 for processing; in addition, the radio frequency unit 61 can send uplink data to the network side device. Generally, the radio frequency unit 61 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

Memory 69 may be used to store software programs or instructions as well as various data. The memory 69 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 69 may include volatile memory or nonvolatile memory, or memory 69 may include both volatile and nonvolatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 69 in the embodiment of the present application includes but does not Limited to these and any other suitable types of memory.

The processor 610 may include one or more processing units; optionally, the processor 610 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 610.

Wherein, the processor 610 is used to identify resource conflicts; the resource conflicts are conflicts between the first resources of the first terminal and the reserved resources of the second terminal; the first resources include transport block transmission resources, PSFCH transmission resources, and/or PSFCH receiving resources corresponding to the transport block sending resources; perform the first action according to the resource conflict identification result.

In this embodiment of the present application, optionally, the processor 610 is configured to detect the control information sent by the second terminal; and determine the reserved resources of the second terminal according to the detected control information.

Send transmission blocks;

Send PSFCH;

No transmission blocks are sent;

PSFCH is not transmitted.

In this embodiment of the present application, optionally, the processor 610 is configured to perform a first action according to whether the resource conflict identification result satisfies the first condition.

In this embodiment of the present application, optionally, the processor 610 is configured to not send the transport block and/or PSFCH if the resource conflict identification result satisfies the first condition; if the resource conflict is If the identification result does not meet the first condition, the transport block and/or PSFCH is sent.

The number or proportion of times or proportions in which the first terminal performs resource re-evaluation, resource preemption, resource re-selection or packet loss continuously or in total is less than the fifth threshold.

In this embodiment of the present application, optionally, the processor 610 is configured to send the transport block and/or PSFCH if the resource conflict identification result satisfies the first condition; if the resource conflict identification result satisfies the first condition, As a result, the first condition is not satisfied, and the transmission block and/or PSFCH is not transmitted.

The priority of the transmission block is greater than the second threshold;

The priority of the PSFCH is greater than the second threshold;

Waiting for the next reserved resource of the first terminal;

Trigger resource re-evaluation or preemption process;

Trigger resource reselection;

discard the transport block and/or PSFCH;

Report NACK to the MAC layer;

Trigger resources are randomly selected;

In this embodiment of the present application, optionally, the processor 610 is configured to identify a resource conflict at a first moment, and the first moment is at the latest N time units before the first resource of the first terminal, N is an integer.

In this embodiment of the present application, optionally, the processor 610 is configured to perform a third action according to the second condition, and the third action includes: adjusting the first condition.

Trigger resource reselection;

discard the transport block and/or PSFCH;

Trigger resources are randomly selected;

In this embodiment of the present application, optionally, the processor 610 is configured to exclude the second terminal when the first terminal performs the Mth resource reselection and determines the candidate resource set for side link transmission. reserved resources, M is an integer greater than or equal to 1.

In this embodiment of the present application, optionally, the processor 610 is configured to not detect the reserved resources of the second terminal and the PSFCH resources and/or if the second terminal enables transmission block size scaling. Or whether the PSFCH resources corresponding to the transport block conflict, the PSFCH is sent and/or received.

Embodiments of the present application also provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the program or instructions are executed by a processor, each process of the above side-link transmission method embodiment is implemented, and can To achieve the same technical effect, to avoid repetition, we will not repeat them here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface and The processor is coupled, and the processor is used to run programs or instructions to implement each process of the above-mentioned side-link transmission method embodiment, and can achieve the same technical effect. To avoid repetition, the details will not be described here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the above side-link transmission method. Each process of the embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims

A side link transmission method, including:

The first terminal identifies the resource conflict and performs the first action according to the resource conflict identification result;

The resource conflict is a conflict between the first resource of the first terminal and the reserved resource of the second terminal;

Wherein, the first resources include transport block transmission resources, PSFCH transmission resources, and/or PSFCH reception resources corresponding to the transport block transmission resources.
The method according to claim 1, wherein the first terminal identifying a resource conflict further includes:

The first terminal detects the control information sent by the second terminal, and determines the reserved resources of the second terminal based on the detected control information.
The method of claim 1, wherein the first action includes at least one of the following:

Send transmission blocks;

Send PSFCH;

No transmission blocks are sent;

PSFCH is not transmitted.
The method according to claim 1, wherein performing the first action according to the resource conflict identification result includes:

The first terminal performs a first action according to whether the resource conflict identification result satisfies a first condition.
The method of claim 4, wherein the first terminal performs a first action based on whether the resource conflict identification result satisfies a first condition, including at least one of the following:

If the resource conflict identification result satisfies the first condition, the first terminal does not send the transport block and/or PSFCH;

If the resource conflict identification result does not meet the first condition, the first terminal transmits the transport block and/or PSFCH.
The method of claim 5, wherein the first condition includes at least one of the following:

The reserved resources of the second terminal coincide with the first resources of the first terminal;

The priority of the reserved resources of the second terminal is greater than the first threshold;

The priority of the transmission block is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the first threshold;

The priority of the PSFCH is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the first threshold;

The priority of the reserved resources of the second terminal is greater than the priority of the transport block;

The priority of the reserved resources of the second terminal is greater than the priority of the PSFCH;

The priority of the transport block is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the transport block;

The priority of the PSFCH is less than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the PSFCH;

The priority of the reserved resources of the second terminal is greater than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the transport block;

The priority of the reserved resources of the second terminal is greater than the second threshold, and the priority of the reserved resources of the second terminal is greater than the priority of the PSFCH;

The RSRP corresponding to the reserved resources of the second terminal is greater than the third threshold;

The number of overlaps between the reserved resources of the second terminal and the first resources of the first terminal is less than a fourth threshold;

The number or proportion of times or proportions in which the first terminal performs resource re-evaluation, resource preemption, resource re-selection or packet loss continuously or in total is less than the fifth threshold.
The method of claim 4, wherein the first terminal performs a first action based on whether the resource conflict identification result satisfies a first condition, including at least one of the following:

If the resource conflict identification result satisfies the first condition, the first terminal transmits the transport block and/or PSFCH;

If the resource conflict identification result does not meet the first condition, the first terminal does not send the transport block and/or PSFCH.
The method of claim 7, wherein the first condition includes at least one of the following:

The reserved resources of the second terminal do not overlap with the first resources of the first terminal;

The reserved resources of the second terminal coincide with the first resources of the first terminal;

The priority of the reserved resources of the second terminal is less than the first threshold;

The priority of the transmission block is greater than the second threshold;

The priority of the PSFCH is greater than the second threshold;

The priority of the reserved resources of the second terminal is smaller than the priority of the transport block;

The priority of the reserved resources of the second terminal is smaller than the priority of the PSFCH;

The RSRP corresponding to the reserved resources of the second terminal is less than the third threshold;

The number of overlaps between the reserved resources of the second terminal and the first resources of the first terminal is greater than a fourth threshold;

The number or proportion of times or proportions in which the first terminal performs resource re-evaluation, resource preemption, resource re-selection or packet loss continuously or in total is greater than the fifth threshold.
The method according to claim 6 or 8, wherein at least one of the first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold is predefined by protocol, network preconfiguration, network configuration , terminal preconfiguration or terminal configuration.
The method according to claim 5 or 7, wherein after the first terminal does not send the transport block and/or PSFCH, it further includes:

The first terminal performs a second action, and the second action includes at least one of the following:

Waiting for the next reserved resource of the first terminal;

Trigger resource re-evaluation or preemption process;

Trigger resource reselection;

discard the transport block and/or PSFCH;

Report NACK to the MAC layer;

Trigger resources are randomly selected;

Select resources in the second resource pool to transmit the transport block and/or PSFCH, wherein the first resource and the reserved resource of the second terminal are located in the first resource pool.
The method according to claim 1, wherein the first terminal identifying a resource conflict includes:

The first terminal identifies a resource conflict at a first time, and the first time is at the latest N time units before the first resource of the first terminal, where N is an integer.
The method according to claim 5 or 7, further comprising:

The first terminal performs a third action according to the second condition, and the third action includes: adjusting the first condition.
The method of claim 12, wherein the second condition includes at least one of the following:

The number of overlaps between the reserved resources of the second terminal and the first resources of the first terminal is greater than a fourth threshold;

The reserved resources of the second terminal overlap with the subsequent reserved resources of the first terminal and/or the PSFCH resources corresponding to the subsequent reserved resources;

The number or proportion of times or proportions in which the first terminal performs resource re-evaluation, resource preemption, resource re-selection or packet loss continuously or in total is greater than the fifth threshold.
The method according to claim 12, wherein the adjusting the first condition includes: adjusting a first threshold, a second threshold, a third threshold, a fourth threshold and a fifth threshold in the first condition. At least one item.
The method of claim 12, wherein the third action further includes at least one of the following:

Trigger resource reselection;

Discard the transport block and/or PSFCH;

Trigger resources are randomly selected;

Resources are selected in the second resource pool to transmit the transport block and/or the PSFCH, where the first resource and the reserved resource of the second terminal are located in the first resource pool.
The method of claim 10, further comprising:

When the first terminal performs the Mth resource reselection and determines the candidate resource set for side link transmission, the reserved resources of the second terminal are excluded, and M is an integer greater than or equal to 1.
The method according to claim 1 or 2, wherein the RSRP value corresponding to the reserved resources of the second terminal is predefined by protocol, network preconfiguration, network configuration, terminal preconfiguration or terminal configuration.
The method according to claim 1 or 2, wherein the reserved resources of the second terminal are selected from a candidate resource set of the second terminal, and the candidate resource set of the second terminal is sorted according to the RSSI of the resources. definite.
The method according to claim 1, wherein the first terminal identifies a resource conflict and performs the first action according to the resource conflict identification result further includes:

If the second terminal enables transmission block size scaling, the first terminal does not detect whether the reserved resources of the second terminal conflict with the PSFCH resources and/or the PSFCH resources corresponding to the transport block, and performs PSFCH Send and/or receive.
A side link data sending device, including:

An identification module, configured to identify resource conflicts; the resource conflicts are conflicts between the first resources of the first terminal and the reserved resources of the second terminal; the first resources include transport block transmission resources, PSFCH transmission resources, and/or PSFCH reception resources corresponding to transport block transmission resources;

The first execution module is configured to execute the first action according to the resource conflict identification result.
A terminal includes a processor and a memory, the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the implementation of any one of claims 1 to 19 is achieved. The steps of the side link transmission method described above.
A readable storage medium on which a program or instructions are stored. When the program or instructions are executed by a processor, the steps of the side link transmission method according to any one of claims 1 to 19 are implemented.