Wireless communication method and terminal

Patent metadata

Field	Value
Publication number	US-12484026-B2
Application number	US-202218088691-A
Country	US
Kind code	B2
Filing date	Dec 26, 2022
Priority date	Sep 25, 2020
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

The embodiments of the present disclosure provide a wireless communication method and a terminal, capable of improving the reliability of a communication system by means of cooperation between terminals. The method includes: transmitting, by a first terminal, a first indication to a second terminal, the first indication indicating a first resource set including a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the first terminal via sidelink control information; receiving, by the first terminal, a second indication indicating a second resource set including a resource in the first resource set that satisfies or does not satisfy a first condition; and triggering, by the first terminal, resource reselection according to the second resource set.

First claim

What is claimed is:

1 . A wireless communication method, comprising:
transmitting, by a first terminal, a first indication to a second terminal, the first indication indicating a first resource set comprising a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the first terminal via sidelink control information; receiving, by the first terminal, a second indication indicating a second resource set including a resource in the first resource set that satisfies or does not satisfy a first condition; and triggering, by the first terminal, resource reselection according to the second resource set; wherein the first condition comprises resources in the first resource set resulting in overlapping resources between transmission resources of the first terminal and a third resource set, wherein the third resource set is a resource set determined according to the resource indicated in the sidelink control information detected by the second terminal.

2 . The method according to claim 1 , wherein the first condition further comprises:
resources in the first resource set resulting in overlapping resources between the transmission resources of the first terminal and transmission resources of the second terminal.

3 . The method according to claim 2 , wherein the first condition further comprises at least one of:
Sidelink Reference Signal Received Power (SL-RSRP) of a Physical Sidelink Control Channel (PSCCH) where the sidelink control information detected by the second terminal is located being greater than or equal to an RSRP threshold; SL-RSRP of a PSSCH scheduled by the PSCCH being greater than or equal to a RSRP threshold; or a priority in the sidelink control information detected by the second terminal being higher than a priority of data to be transmitted by the first terminal.

4 . The method according to claim 2 , wherein:
the transmission resources of the first terminal are the resources in the first resource set.

5 . The method according to claim 1 , wherein the first indication is carried in sidelink control information in a PSCCH transmitted by the first terminal.

6 . The method according to claim 1 , wherein the first indication comprises a first frequency domain indication and a first time domain indication,
wherein the first frequency domain indication indicates a frequency domain position of each resource in the first resource set, and the first time domain indication indicates a time domain position of each resource in the first resource set.

7 . The method according to claim 6 , wherein the first frequency domain indication is an absolute indication or a relative indication relative to a predetermined frequency domain position, and the first time domain indication is an absolute indication or a relative indication relative to a predetermined time domain position.

8 . The method according to claim 1 , wherein the first indication is transmitted at time at which the first terminal transmits a PSSCH.

9 . The method according to claim 1 , wherein the second indication is transmitted at any of:
any time before a fourth time, the fourth time being a time corresponding to a resource in the first resource set that satisfies the first condition and has a lowest time domain position; or any time before a fifth time, the fifth time being a difference between the fourth time and a first time period.

10 . The method according to claim 1 , further comprising:
transmitting, by the first terminal, first information to the second terminal, the first information comprising at least one of: a resource reservation period of the first terminal, or a priority of data to be transmitted by the first terminal.

11 . The method according to claim 10 , wherein a time at which the first information is transmitted and a time at which the first indication is transmitted are same.

12 . The method according to claim 10 , wherein a scheme for carrying the first information and a scheme for carrying the first indication are same.

13 . A wireless communication method, comprising:
receiving, by a second terminal, a first indication transmitted by a first terminal, the first indication indicating a first resource set comprising a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the first terminal via sidelink control information; determining, by the second terminal, a second resource set comprising a resource in the first resource set that satisfies or does not satisfy a first condition; and transmitting, by the second terminal, a second indication to the first terminal, the second indication indicating the second resource set; wherein the first condition comprises resources in the first resource set resulting in overlapping resources between transmission resources of the first terminal and a third resource set, wherein the third resource set is a resource set determined according to the resource indicated in the sidelink control information detected by the second terminal.

14 . The method according to claim 13 , wherein the first condition further comprises:
resources in the first resource set resulting in overlapping resources between the transmission resources of the first terminal and transmission resources of the second terminal.

15 . The method according to claim 14 , wherein the first condition further comprises at least one of:
Sidelink Reference Signal Received Power (SL-RSRP) of a Physical Sidelink Control Channel (PSCCH) where the sidelink control information detected by the second terminal is located being greater than or equal to an RSRP threshold; SL-RSRP of a PSSCH scheduled by the PSCCH being greater than or equal to a RSRP threshold; or a priority in the sidelink control information detected by the second terminal being higher than a priority of data to be transmitted by the first terminal.

16 . The method according to claim 14 , wherein:
the transmission resources of the first terminal are the resources in the first resource set.

17 . The method according to claim 13 , wherein the first indication is carried in sidelink control information in a PSCCH transmitted by the first terminal.

18 . The method according to claim 13 , wherein the first indication comprises a first frequency domain indication and a first time domain indication,
wherein the first frequency domain indication indicates a frequency domain position of each resource in the first resource set, and the first time domain indication indicates a time domain position of each resource in the first resource set.

19 . A terminal, comprising a processor and a memory, wherein the memory stores a computer program, and the processor is configured to invoke and execute the computer program stored in the memory to:
transmit a first indication to a second terminal, the first indication indicating a first resource set comprising a time-frequency resource selected by the terminal or a time-frequency resource indicated by the terminal via sidelink control information; receive a second indication indicating a second resource set including a resource in the first resource set that satisfies or does not satisfy a first condition; and trigger resource reselection according to the second resource set; wherein the first condition comprises resources in the first resource set resulting in overlapping resources between transmission resources of a first terminal and a third resource set, wherein the third resource set is a resource set determined

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Ding Yi
• Zhao Zhenshan
• Zhang Shichang
• Lin Huei-Ming

Classifications

• H04W72/044

  based on the type of the allocated resource · CPC title

• H04W72/25

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

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W72/0446 Primary

  Resources in time domain, e.g. slots or frames · CPC title

• H04W72/40

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