US-12621904-B2 - Method for sidelink communication, terminal device, non-transitory computer-readable storage medium

US12621904B2US 12621904 B2US12621904 B2US 12621904B2US-12621904-B2

Abstract

A method for sidelink (SL) communication is provided. The method includes the following. A terminal device receives assistance information (AI) transmitted by one or more other terminal devices. The terminal device determines a target terminal device and/or a transmission resource used for SL message transmission based on at least one of: the received AI, or a discontinuous reception (DRX) configuration of each other terminal device.

Inventors

Bingxue LENG
Qianxi Lu
Zhongda Du
Shichang Zhang

Assignees

GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date: 20260505
Application Date: 20230719

Claims (6)

1 . A method for sidelink (SL) communication, the method being applicable to a terminal device and comprising: receiving, by a terminal device, assistance information (AI) transmitted by one or more other terminal devices; and determining, by the terminal device, a target terminal device and a transmission resource used for SL message transmission based on: the received AI and a rule; wherein determining, by the terminal device, the target terminal device and the transmission resource used for SL message transmission comprises: determining, by the terminal device, the target terminal device based on the rule, wherein the rule comprises that a device that triggers a resource selection procedure is determined as the target terminal device; and determining, by the terminal device, the transmission resource used for SL message transmission based on AI transmitted by the target terminal device; wherein the terminal device uses the received AI after a resource exclusion procedure.
2 . A terminal device, comprising: a transceiver; a processor coupled to the transceiver; and a memory configured to store a computer program; wherein the processor is configured to execute the computer program to cause the terminal device to: receive assistance information (AI) transmitted by one or more other terminal devices; and determine a target terminal device and a transmission resource used for SL message transmission based on: the received AI and a rule; wherein determining the target terminal device and the transmission resource used for SL message transmission comprises: determining the target terminal device based on the rule, wherein the rule comprises that a device that triggers a resource selection procedure is determined as the target terminal device; and determining the transmission resource used for SL message transmission based on AI transmitted by the target terminal device; wherein the terminal device is configured to use the received AI after a resource exclusion procedure.
3 . A non-transitory computer-readable storage medium configured to store a computer program, wherein the computer program is configured to cause a terminal device to: receive assistance information (AI) transmitted by one or more other terminal devices; and determine a target terminal device and a transmission resource used for SL message transmission based on: the received AI and a rule; wherein determining the target terminal device and the transmission resource used for SL message transmission comprises: determining the target terminal device based on the rule, wherein the rule comprises that a device that triggers a resource selection procedure is determined as the target terminal device; and determining the transmission resource used for SL message transmission based on AI transmitted by the target terminal device; wherein the terminal device is configured to use the received AI after a resource exclusion procedure.
4 . The method of claim 1 , wherein determining, by the terminal device, the target terminal device based on the rule comprises: determining, by the terminal device, the target terminal device based on the rule after the resource exclusion procedure; wherein determining, by the terminal device, the transmission resource used for SL message transmission based on the AI transmitted by the target terminal device comprises: determining, by the terminal device, a candidate resource set based on the AI transmitted by the target terminal device and a discontinuous reception (DRX) configuration of the target terminal device, wherein the candidate resource set is used in a resource reservation procedure.
5 . The terminal device of claim 2 , wherein determining the target terminal device based on the rule comprises: determining the target terminal device based on the rule after the resource exclusion procedure; wherein determining the transmission resource used for SL message transmission based on the AI transmitted by the target terminal device comprises: determining a candidate resource set based on the AI transmitted by the target terminal device and a discontinuous reception (DRX) configuration of the target terminal device, wherein the candidate resource set is used in a resource reservation procedure.
6 . The non-transitory computer-readable storage medium of claim 3 , wherein determining the target terminal device based on the rule comprises: determining the target terminal device based on the rule after the resource exclusion procedure; wherein determining the transmission resource used for SL message transmission based on the AI transmitted by the target terminal device comprises: determining a candidate resource set based on the AI transmitted by the target terminal device and a discontinuous reception (DRX) configuration of the target terminal device, wherein the candidate resource set is used in a resource reservation procedure.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application is a continuation of International Application No. PCT/CN2021/083442, filed Mar. 26, 2021, the entire disclosure of which is incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to the field of communications, and in particular, to a method for sidelink (SL) communication, a terminal device, and a non-transitory computer-readable storage medium. BACKGROUND Device to device (D2D) and vehicle to everything (V2X) technologies are important in mobile communications. In a D2D or V2X scenario, direct communication between devices can be supported through a sidelink (SL) transmission technology. Different from that communication data is received or transmitted through a base station in a conventional cellular system, an Internet of vehicles system can adopt a terminal-to-terminal direct communication mode, thereby having a higher spectrum efficiency and a lower transmission delay. A V2X system can support two transmission modes, namely mode-1 and mode-2. In mode-1, transmission resources for a terminal can be allocated by a network, and the terminal can transmit SL data on an SL according to the resources allocated by the network. In mode-2, the terminal can select resources from a resource pool for SL transmission. Conventional resource selection mode-2 has problems such as a half-duplex problem, a hidden-node problem, and a resource collision problem. As such, a terminal coordination mechanism for an SL can be introduced. However, due to introduction of discontinuous reception (DRX) technology to an SL system, the terminal needs to consider a DRX configuration of a receiving terminal in resource selection. Further, if there are assistance information (AI) from multiple terminals, how to comprehensively consider the AI from the multiple terminals to perform resource selection is a problem to be solved. SUMMARY In view of the above, implementations of the present disclosure provide a method for sidelink (SL) communication, a terminal device, and a non-transitory computer-readable storage medium. Implementations of the present disclosure provide a method for SL communication. The method is applicable to a terminal device and includes the following. The terminal device receives AI transmitted by one or more other terminal devices. The terminal device determines a target terminal device and/or a transmission resource used for SL message transmission based on at least one of: the received AI, or a discontinuous reception (DRX) configuration of each other terminal device. Implementations of the present disclosure further provide a terminal device. The terminal device includes a transceiver, a processor coupled to the transceiver, and a memory storing a computer program. The processor is configured to execute the computer program to cause the terminal device to receive AI transmitted by one or more other terminal devices, and determine a target terminal device and/or a transmission resource used for SL message transmission based on at least one of: the received AI, or a DRX configuration of each other terminal device. Implementations of the present disclosure further provide a non-transitory computer-readable storage medium for storing a computer program, where the computer program enables a terminal device to perform the following. Receive AI transmitted by one or more other terminal devices. Determine a target terminal device and/or a transmission resource used for SL message transmission based on at least one of: the received AI, or a DRX configuration of each other terminal device BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are schematic diagrams illustrating two types of sidelink (SL) communication system architectures according to implementations of the present disclosure. FIG. 3 is a schematic diagram illustrating assistance information (AI) transmission by a terminal device according to implementations of the present disclosure. FIG. 4 is a flow chart of a method for SL communication at a terminal side according to implementations of the present disclosure. FIGS. 5-11 are schematic diagrams each illustrating a process of determining a target terminal and a transmission resource according to implementations of the present disclosure. FIG. 12 is a schematic structural block diagram of a terminal device according to implementations of the present disclosure. FIG. 13 is a schematic block diagram of a communication device according to implementations of the present disclosure. FIG. 14 is a schematic block diagram of a chip according to implementations of the present disclosure. FIG. 15 is a schematic block diagram of a communication system according to implementations of the present disclosure. DETAILED DESCRIPTION The following describes technical solutions in implementations of the present disclosure with reference to accompanying drawings in the implementations of the present disclosure. The technical solutions in the implem