Sidelink channel state information transmission method and communication apparatus

Patent metadata

Field	Value
Publication number	US-12199752-B2
Application number	US-202217672545-A
Country	US
Kind code	B2
Filing date	Feb 15, 2022
Priority date	Aug 16, 2019
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

This application provides a sidelink channel state information transmission method and a communication apparatus. The method and the apparatus may be applied to systems such as an internet of vehicles, V2X, and V2V. The method includes: a first terminal device sends modulation and coding scheme (MCS) table indication information, wherein the MCS table indication information indicates a MCS table corresponding to data sent by the first terminal device to a second terminal device, and the MCS table is associated with a resource pool for sending the data.

First claim

What is claimed is:

1. A communication method for communications between a first terminal device and a second terminal device, comprising:
generating modulation and coding scheme (MCS) table indication information, wherein the MCS table indication information indicates a MCS table for sending data from the first terminal device to the second terminal device; and
sending the MCS table indication information to the second terminal device, wherein the MCS table indication information is sent using an indication field in first sidelink control information (SCI), the indication field in the first SCI indicates the MCS table, and the first SCI schedules the data to be sent from the first terminal device to the second terminal device, wherein the first SCI comprises one bit that indicates one of two MCS tables configured for vehicle-to-everything (V2X) communication, or the first SCI comprises two bits that indicate one of three MCS tables configured for V2X communication.

2. The method according to claim 1 , wherein the MCS table indication information enables the second terminal device to determine a channel quality indicator (CQI) table corresponding to a sidelink between the second terminal device and the first terminal device.

3. The method according to claim 1 , wherein the method further comprises:
sending configuration information to the second terminal device, wherein the configuration information configures a time window for the second terminal device, the time window being a time period configured for channel state information (CSI) feedback.

4. The method according to claim 3 , wherein a time length of the time window is one or more slots.

5. The method according to claim 3 , wherein the time window is selected from a preconfigured time set.

6. A communication method for communications between a first terminal device and a second terminal device, comprising:
receiving modulation and coding scheme (MCS) table indication information, wherein the MCS table indication information indicates a MCS table corresponding to data received from the first terminal device, wherein the MCS table indication information is carried in an indication field in first sidelink control information (SCI), the indication field in the first SCI indicates the MCS table, and the first SCI schedules the data received by the second terminal device from the first terminal device, wherein the first SCI comprises one bit that indicates one of two MCS tables configured for vehicle-to-everything (V2X) communication, or the first SCI comprises two bits that indicate one of three MCS tables configured for V2X communication; and
determining the MCS table based on the MCS table indication information.

7. The method according to claim 6 , wherein the method further comprises:
determining, based on the MCS table indication information, a channel quality indicator (CQI) table corresponding to a sidelink between the second terminal device and the first terminal device.

8. The method according to claim 7 , wherein the method further comprises:
receiving configuration information from the first terminal device, wherein the configuration information configures a time window for the second terminal device, and the time window is a time period configured for channel state information CSI feedback.

9. The method according to claim 8 , wherein a time length of the time window is one or more slots.

10. The method according to claim 8 , wherein the time window is selected from a preconfigured time set.

11. A communication apparatus, comprising:
one or more processors; and
a non-transitory memory, wherein the memory stores a computer program, and when executing the computer program stored in the memory, the one or more processors execute operations comprising:
generating modulation and coding scheme (MCS) table indication information, wherein the MCS table indication information indicates a MCS table for sending data by the communication apparatus to a second terminal device, wherein the MCS table indication information is sent using an indication field in first sidelink control information (SCI), the indication field in the first SCI indicates the MCS table, and the first SCI schedules the data sent by the communication apparatus to the second terminal device, wherein the first SCI comprises one bit that indicates one of two MCS tables configured for vehicle-to-everything (V2X) communication, or the first SCI comprises two bits that indicate one of three MCS tables configured for V2X communication; and
sending the MCS table indication information to the second terminal device.

12. The communication apparatus according to claim 11 , wherein the MCS table indication information enables the second terminal device to determine a channel quality indicator (CQI) table corresponding to a sidelink between the second terminal device and the communication apparatus.

13. The communication apparatus according to claim 11 , wherein the operations further comprise:
sending configuration information to the second terminal device, wherein the configuration information configures a time window for the second terminal device, the time window being a time period configured for channel state information (CSI) feedback.

14. The communication apparatus according to claim 13 , wherein a time length of the time window is one or more slots.

15. The communication apparatus according to claim 13 wherein the time window is selected from a preconfigured time set.

16. A communication apparatus, comprising:
one or more processors; and
a non-transitory memory, wherein the memory stores a computer program, and when executing the computer program stored in the memory, the one or more processors execute operations comprising:
receiving modulation and coding scheme (MCS) table indication information, wherein the MCS table indication information indicates a MCS table corresponding to data received by the communication apparatus from a first terminal device, wherein the MCS table indication information is carrier in an indication field in first sidelink control information (SCI), the indication field in the first SCI indicates the MCS table, and the first SCI schedules the data received by the communication apparatus from the first terminal device, wherein the first SCI comprises one bit that indicates one of two MCS tables configured for vehicle-to-everything (V2X) communication, or the first SCI comprises two bits that indicate one of three MCS tables configured for V2X communication; and
determining the MCS table based on the MCS table indication information.

17. The communication apparatus according to claim 16 , wherein the operations further comprise:
determining, based on the MCS table indication information, a channel quality indicator (CQI) table corresponding to a sidelink between the communication apparatus and the first terminal device.

18. The communication apparatus according to claim 16 , herein the operations further comprise:
receiving configuration information from the first terminal device, wherein the configuration information configures a time window for the communication apparatus, the time window being a time period configured for channel state information (CSI) feedback.

19. The communication apparatus according to claim 18 , wherein a time length of the time window is one or more slots.

20. The communication apparatus according to claim 18 , wherein the time window is selected from a preconfigured time set.

21. The method according to clai

Assignees

• Huawei Tech Co Ltd

Inventors

• Huang Haining
• Li Chao
• Zhang Xingwei
• Wang Junwei
• Liu Zhe

Classifications

• H04W72/542

  using measured or perceived quality · CPC title

• H04W72/20

  Control channels or signalling for resource management · CPC title

• H04W72/0446

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

• H04W72/02

  Selection of wireless resources by user or terminal · CPC title

• H04W4/40 Primary

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