Direct link data transmission method and apparatus, and storage medium

Patent metadata

Field	Value
Publication number	US-12414194-B2
Application number	US-202017909886-A
Country	US
Kind code	B2
Filing date	Mar 13, 2020
Priority date	Mar 13, 2020
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A sidelink data transmission method is performed by a first terminal and includes: receiving, from a second terminal, discontinuous reception (DRX) information of the second terminal; determining sidelink resources based on the DRX information; and transmitting sidelink data to the second terminal based on the sidelink resources.

First claim

What is claimed is:

1. A sidelink data transmission method, performed by a first terminal, the method comprising:
receiving, from a second terminal, discontinuous reception (DRX) information of the second terminal;
determining sidelink resources based on the DRX information;
transmitting sidelink data to the second terminal based on the sidelink resources and
sending a sidelink identifier of the second terminal and the DRX information of the second terminal to a network device, wherein the first terminal is in a connected state and the DRX information is applicable to a sidelink unicast reception,
wherein determining sidelink resources based on the DRX information comprises:
determining sidelink resources configured by the network device for the first terminal, wherein the sidelink resources are configured by the network device based on the DRX information and the sidelink identifier of the second terminal, and the sidelink resources are configured for transmitting sidelink unicast data to the second terminal.

2. The method of claim 1 , wherein the first terminal is in an idle state or in an inactive state, and the DRX information is applicable to a sidelink unicast reception;
wherein determining the sidelink resources based on the DRX information comprises:
selecting a sidelink resource pool associated with the DRX information from sidelink resource pools broadcasted by a network device as the sidelink resources for transmitting sidelink unicast data to the second terminal.

3. The method of claim 2 , further comprising:
triggering the first terminal to enter a connected state; and
determining sidelink resources configured by the network device based on the DRX information of the second terminal and the sidelink identifier of the second terminal, as the sidelink resources for transmitting the sidelink unicast data to the second terminal;
wherein there is no sidelink resource pool associated with the DRX information in the sidelink resource pools broadcasted by the network device.

4. The method of claim 1 , wherein receiving the DRX information of the second terminal comprises:
acquiring the DRX information applicable to the sidelink unicast reception based on a unicast message transmitted by the second terminal.

5. The method of claim 1 , wherein the first terminal is in an idle state or in an inactive state, and the DRX information is applicable to a sidelink multicast reception;
wherein determining sidelink resources based on the DRX information comprises:
selecting a sidelink resource pool associated with the DRX information from sidelink resource pools broadcasted by a network device as the sidelink resources for transmitting sidelink multicast data to the second terminal.

6. The method of claim 1 , wherein the DRX information comprises DRX parameters.

7. The method of claim 6 , wherein the DRX information further comprises one or both of a sidelink identifier of the first terminal and a sidelink identifier of the second terminal.

8. A sidelink data transmission device, comprising:
a processor; and
a memory configured to store instructions executable by the processor;
wherein the processor is configured to perform the method of claim 1 .

9. A sidelink data transmission method, performed by a second terminal, the method comprising:
transmitting discontinuous reception (DRX) information of the second terminal to a first terminal; and
receiving sidelink data transmitted by the first terminal on sidelink resources determined based on the DRX information, wherein the sidelink resources are configured by a network device based on the DRX information and a sidelink identifier of the second terminal, and the DRX information is applicable to a sidelink unicast reception,
wherein transmitting DRX information of the second terminal to the first terminal comprises:
transmitting DRX information applicable to the sidelink unicast reception to the first terminal based on a unicast message.

10. A sidelink data transmission device, comprising:
a processor; and
a memory configured to store instructions executable by the processor;
wherein the processor is configured to perform the method of claim 9 .

11. The method of claim 9 , wherein the DRX information comprises DRX parameters.

12. The method of claim 11 , wherein the DRX information further comprises one or both of a sidelink identifier of the first terminal and a sidelink identifier of the second terminal.

13. A sidelink data transmission method, performed by a network device, the method comprising:
determining discontinuous reception (DRX) information, wherein the DRX information is transmitted by a second terminal to a first terminal;
configuring sidelink resources based on the DRX information, wherein the sidelink resources are configured to transmit sidelink data by the first terminal to the second terminal; and
receiving a sidelink identifier of the second terminal and the DRX information of the second terminal sent by the first terminal, wherein the first terminal is in a connected state and the DRX information is applicable to a sidelink unicast reception,
wherein configuring the sidelink resources based on the DRX information comprises:
configuring, for the first terminal, the sidelink resources based on the DRX information and the sidelink identifier of the second terminal, wherein the sidelink resources are used by the first terminal to transmit sidelink unicast data to the second terminal.

14. The method of claim 13 , wherein the first terminal is in an idle state or an inactive state; and the method further comprises:
broadcasting one or more sets of DRX parameters and one or more sidelink resource pools, wherein each sidelink resource pool is associated with at least one set of DRX parameters.

15. A sidelink data transmission device, comprising:
a processor; and
a memory configured to store instructions executable by the processor;
wherein the processor is configured to perform the method of claim 13 .

16. The method of claim 13 , wherein the DRX information comprises DRX parameters.

17. The method of claim 16 , wherein the DRX information further comprises one or both of a sidelink identifier of the first terminal and a sidelink identifier of the second terminal.

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Yang Xing

Classifications

• H04W72/30

  Resource management for broadcast services · CPC title

• H04W72/40

  Resource management for direct mode communication, e.g. D2D or sidelink · CPC title

• H04W72/25

  between terminals via a wireless link, e.g. sidelink · CPC title

• H04W72/02

  Selection of wireless resources by user or terminal · CPC title

• H04W76/28 Primary

  Discontinuous transmission [DTX]; Discontinuous reception [DRX] · CPC title