Method and apparatus for determining data feedback resource

Patent metadata

Field	Value
Publication number	US-11330561-B2
Application number	US-201916574733-A
Country	US
Kind code	B2
Filing date	Sep 18, 2019
Priority date	Mar 20, 2017
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

This application discloses a method and an apparatus for determining a data feedback resource. The method includes receiving, by a first terminal, first data sent by a second terminal. The method includes determining a feedback resource of the first data. The feedback resource of the first data is a feedback resource in a feedback resource pool. The method includes sending feedback information of the first data to the second terminal on the feedback resource. The feedback information indicates a receiving status of the first data.

First claim

What is claimed is:

1. A method, comprising:
receiving, by a first terminal, first data from a second terminal;
determining, by the first terminal according to a time-frequency resource on which the first data is sent from the second terminal to the first terminal, start location information of a frequency domain resource of a feedback resource used for transmitting feedback information of the first data to the second terminal, a length of the frequency domain resource of the feedback resource used for transmitting the feedback information, and information indicating a time domain resource of the feedback resource for transmitting the feedback information, the feedback information indicating a receiving status of the first data; and
sending, by the first terminal, the feedback information of the first data to the second terminal on the feedback resource.

2. The method according to claim 1 , wherein the method further comprises:
obtaining, by the first terminal according to time-frequency resource information of sidelink control information (SCI) of the first data, the time-frequency resource of the first data.

3. The method according to claim 1 , wherein the method further comprises:
determining, by the first terminal according to the time-frequency resource of the first data and ID information of the second terminal, code domain information of the feedback resource of the first data, the code domain information comprising a code word used to send the feedback information.

4. The method according to claim 1 , wherein the feedback resource of the first data is a feedback resource in a feedback resource pool.

5. The method according to claim 4 , wherein the method further comprises:
obtaining, by the first terminal, configuration information of the feedback resource pool; and
determining, by the first terminal, the feedback resource of the first data based on the configuration information of the feedback resource pool.

6. The method according to claim 5 , wherein obtaining, by the first terminal, the configuration information of the feedback resource pool comprises:
obtaining, by the first terminal, the configuration information of the feedback resource pool from a base station; or
obtaining, by the first terminal, the configuration information of the feedback resource pool using preconfigured information.

7. A method, comprising:
sending, by a second terminal, first data to a first terminal;
determining, by the second terminal according to a time-frequency resource on which the first data is sent from the second terminal to the first terminal, start location information of a frequency domain resource of a feedback resource to be used for receiving feedback information of the first data by the second terminal from the first terminal, a length of the frequency domain resource of the feedback resource used for receiving the feedback information, and information indicating a time domain resource of the feedback resource for receiving the feedback information, the feedback information indicating a receiving status of the first data; and
receiving, by the second terminal on the feedback resource, the feedback information of the first data from the first terminal.

8. The method according to claim 7 , wherein the method further comprises:
sending, by the second terminal, sidelink control information (SCI) of the first data, wherein time-frequency resource information of the SCI of the first data is for obtaining the time-frequency resource information of the first data.

9. The method according to claim 7 , wherein the method further comprises:
determining, by the second terminal according to the time-frequency resource of the first data and ID information of the second terminal, code domain information of the feedback resource of the first data, the code domain information comprising a code word used to send the feedback information.

10. The method according to claim 7 , wherein the feedback resource of the first data is a feedback resource in a feedback resource pool.

11. The method according to claim 10 , wherein the method further comprises:
obtaining, by the second terminal, configuration information of the feedback resource pool; and
determining, by the second terminal, the feedback resource of the first data based on the configuration information of the feedback resource pool.

12. The method according to claim 11 , wherein obtaining, by the second terminal, the configuration information of the feedback resource pool comprises:
obtaining, by the second terminal, the configuration information of the feedback resource pool from a base station; or
obtaining, by the second terminal, the configuration information of the feedback resource pool using preconfigured information.

13. A first terminal device, comprising:
a receiver configured to receive first data sent by a second terminal device;
a processor configured to determine, according to a time-frequency resource on which the first data is sent from the second terminal device to the first terminal device, start location information of a frequency domain resource of a feedback resource to be used for transmitting feedback information of the first data to the second terminal device, a length of the frequency domain resource of the feedback resource for transmitting the feedback information, and information indicating a time domain resource of the feedback resource for transmitting the feedback information, the feedback information indicating a receiving status of the first data; and
a transmitter configured to send the feedback information of the first data to the second terminal device on the feedback resource.

14. The first terminal device according to claim 13 , wherein the processor is further configured to obtain, according to time-frequency resource information of sidelink control information (SCI) of the first data, the time-frequency resource of the first data.

15. The first terminal device according to claim 13 , wherein the processor is further configured to:
determine, according to the time-frequency resource of the first data and ID information of the second terminal device, code domain information of the feedback resource of the first data, the code domain information comprising a code word used to send the feedback information.

16. The first terminal device according to claim 13 , wherein the feedback resource of the first data is a feedback resource in a feedback resource pool.

17. The first terminal device according to claim 16 , wherein the processor is further configured to:
obtain configuration information of the feedback resource pool; and
determine the feedback resource of the first data based on the configuration information of the feedback resource pool.

18. The first terminal device according to claim 17 , wherein obtaining the configuration information of the feedback resource pool comprises:
obtaining the configuration information of the feedback resource pool from a base station; or
obtaining the configuration information of the feedback resource pool using preconfigured information.

19. A second terminal device, comprising:
a transmitter configured to send first data to a first terminal device;
a processor configured to determine, according to a time-frequency resource on which the first data is sent from the second terminal device to the first terminal device, start location information of a frequency domain resource of a feedback resource to be used for receiving feedback information of the first data by the second terminal dev

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhao Zhenshan
• Liu Deping

Classifications

• H04W72/51

  based on terminal or device properties · CPC title

• H04L5/0055 Primary

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04W76/11

  Allocation or use of connection identifiers · CPC title

• H04W4/40

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title

• H04W72/02 Primary

  Selection of wireless resources by user or terminal · CPC title