Method for determining feedback resource in sidelink and device

Patent metadata

Field	Value
Publication number	US-11985666-B2
Application number	US-202017422326-A
Country	US
Kind code	B2
Filing date	Jan 13, 2020
Priority date	Jan 11, 2019
Publication date	May 14, 2024
Grant date	May 14, 2024

Abstract

A method for determining a feedback resource in a sidelink includes a first terminal sending SCI to a second terminal, where the SCI includes indication information. The indication information is used to indicate a first resource or a first resource window to be occupied for sending hybrid automatic repeat request HARQ feedback information by the second terminal, and the first resource window includes a plurality of candidate first resources. The method further includes the first terminal receiving, on the first resource, the HARQ feedback information sent by the second terminal, or monitors, in the first resource window, the HARQ feedback information sent by the second terminal.

First claim

What is claimed is:

1. A method for determining a feedback resource in a sidelink, the method comprising:
sending, using a first resource, data from a first terminal to a second terminal;
determining, based on a mapping relationship between the first resource and a second resource, the second resource or a first window including the second resource;
either receiving hybrid automatic repeat request (HARQ) feedback information from the second terminal on the second resource or monitoring resources in the first window for the HARQ feedback information from the second terminal;
monitoring sidelink control information (SCI) from another terminal;
determining, based on the SCI, a third resource for the other terminal to send data; and
determining the first resource based on the third resource.

2. The method of claim 1 , wherein either receiving hybrid automatic repeat request (HARQ) feedback information from the second terminal on the second resource or monitoring resources in the first window for the HARQ feedback information from the second terminal comprises receiving hybrid automatic repeat request (HARQ) feedback information from the second terminal on the second resource, and wherein at least one of the first terminal or the second terminal is outside of a coverage area of a network device.

3. The method of claim 1 , wherein the other terminal is a terminal other than the first terminal and the second terminal.

4. The method of claim 1 , wherein the SCI comprises indication information, and wherein the indication information indicates the third resource.

5. The method of claim 4 , wherein the indication information further indicates a second window including the third resource, and wherein the indication information indicates one or more of a size of the second window, a start location of the second window, or an end location of the second window.

6. The method of claim 4 , further comprising:
monitoring a first message from the other terminal, wherein the first message indicates a fourth resource for the other terminal to send the first message; and
determining the first resource based on the fourth resource.

7. The method of claim 4 , wherein at least one of the first terminal or the second terminal is outside of a coverage area of a network device.

8. The method of claim 1 , wherein either receiving hybrid automatic repeat request (HARQ) feedback information from the second terminal on the second resource or monitoring resources in the first window for the HARQ feedback information from the second terminal comprises monitoring resources in the first window for the HARQ feedback information from the second terminal, and wherein at least one of the first terminal or the second terminal is outside of a coverage area of a network device.

9. A first terminal, comprising:
a memory configured to store one or more programs; and
a processor coupled to the memory and configured to execute the one or more programs to cause the first terminal to:
send, using a first resource, data to a second terminal;
determine, based on a mapping relationship between the first resource and a second resource, a second resource or a first window including the second resource;
either receive hybrid automatic repeat request (HARQ) feedback information from the second terminal on the second resource, or monitor resources in the first window for the HARQ feedback information from the second terminal;
monitor sidelink control information (SCI) from another terminal;
determine, based on the SCI, a third resource for the other terminal to send data; and
determine the first resource based on the third resource.

10. The first terminal of claim 9 , wherein when the processor is configured to either receive hybrid automatic repeat request (HARQ) feedback information from the second terminal on the second resource or monitor resources in the first window for the HARQ feedback information from the second terminal, the processor is configured to cause the first terminal to receive hybrid automatic repeat request (HARQ) feedback information from the second terminal on the second resource, and wherein at least one of the first terminal or the second terminal is outside of a coverage area of a network device.

11. The first terminal of claim 9 , wherein the other terminal is a terminal other than the first terminal and the second terminal.

12. The first terminal of claim 9 , wherein the SCI comprises indication information, and wherein the indication information indicates the first resource.

13. The first terminal of claim 12 , wherein the indication information further indicates a second window including the third resource, and wherein the indication information indicates one or more of a size of the second window, a start location of the second window, or an end location of the second window.

14. The first terminal of claim 12 , wherein the processor is further configured to cause the first terminal to:
monitor a first message from the other terminal, wherein the first message indicates a fourth resource for the other terminal to send the first message; and
determine the first resource based on the fourth resource.

15. The first terminal of claim 12 , wherein at least one of the first terminal or the second terminal is outside of a coverage area of a network device.

16. A method for determining a feedback resource in a sidelink, the method comprising:
sending a first message including data from a first terminal to a second terminal;
determining, based on a mapping relationship between the first message and a second message, the second message or a first window of the second message;
either receiving hybrid automatic repeat request (HARQ) feedback information from the second terminal on the second message, or monitoring the first window for the HARQ feedback information from the second terminal; and
monitoring sidelink control information (SCI) from another terminal,
wherein the other terminal is a terminal other than the first terminal and the second terminal.

17. The method of claim 16 , further comprising:
determining, based on the SCI, a first resource for the other terminal to send data; and
determining the first message based on the first resource.

18. The method of claim 17 , wherein the SCI comprises indication information, and wherein the indication information indicates the first resource.

19. The method of claim 18 , wherein the indication information further indicates a second window of the first resource, and wherein the indication information indicates one or more of a size of the second window, a start location of the second window, or an end location of the second window.

20. The method of claim 16 , further comprising:
monitoring a third message from the other terminal, wherein the third message indicates a first resource occupied by the other terminal for sending the third message; and
determining the first message based on the first resource.

Assignees

• Huawei Tech Co Ltd

Inventors

• Li Xiaocui
• Xu Haibo
• Xue Yifan

Classifications

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title

• H04L1/1812 Primary

  Hybrid protocols; Hybrid automatic repeat request [HARQ] · CPC title

• H04L1/1861 Primary

  Physical mapping arrangements (for ACK signaling see also H04L5/0053) · CPC title

• H04L1/1607

  Details of the supervisory signal · CPC title

• H04L1/1893

  Physical mapping arrangements (physical resource mapping in general H04L5/00) · CPC title