Information indication method and communication apparatus

Patent metadata

Field	Value
Publication number	US-2024422586-A1
Application number	US-202418821580-A
Country	US
Kind code	A1
Filing date	Aug 30, 2024
Priority date	Mar 1, 2022
Publication date	Dec 19, 2024
Grant date	—

Abstract

Embodiments of this application provide an information indication method and a communication apparatus. The method is applied to a wireless local area network system that supports various IEEE 802.11 protocols such as the 802.11bf series protocols. The method includes: generating a PPDU, where the PPDU includes sensing indication information, the sensing indication information indicates that the PPDU is a PPDU used for sensing measurement, and the PPDU is a directional multi-gigabit DMG single carrier mode PPDU, an enhanced directional multi-gigabit EDMG single carrier mode PPDU, or an EDMG orthogonal frequency division multiplexing mode PPDU; and sending the PPDU. In this manner, a sensing PPDU and a non-sensing PPDU in a communication system can be distinguished, so that a receive end optimizes sensing performance.

First claim

What is claimed is:

1 . An information indication method, comprising:
generating a physical layer protocol data unit (PPDU), wherein the PPDU comprises sensing indication information, the sensing indication information indicates that the PPDU is a PPDU used for sensing measurement; wherein the PPDU is a directional multi-gigabit (DMG) single carrier (SC) mode PPDU, an enhanced directional multi-gigabit (EDMG) SC mode PPDU, or an EDMG orthogonal frequency division multiplexing (OFDM) mode PPDU; and sending the PPDU.

2 . The method according to claim 1 , wherein the PPDU is the EDMG SC mode PPDU, the EDMG SC mode PPDU comprises an EDMG-header-A field, and the EDMG-header-A field carries the sensing indication information.

3 . The method according to claim 2 , any reserved bit in the EDMG-header-A field carries the sensing indication information.

4 . The method according to claim 1 , wherein the PPDU is the EDMG OFDM mode PPDU, the EDMG OFDM mode PPDU comprises an EDMG-header-A field, and the EDMG-header-A field carries the sensing indication information.

5 . The method according to claim 4 , any reserved bit in the EDMG-header-A field carries the sensing indication information.

6 . The method according to claim 1 , wherein the PPDU is the DMG SC mode PPDU, the DMG SC mode PPDU comprises a DMG header field, and an additional PPDU indication field and a training length indication field in the DMG header field carry the sensing indication information.

7 . The method according to claim 6 , wherein the additional PPDU indication field is a B30 field in the DMG header field, and the training length indication field is a B32 field to a B36 field in the DMG header field.

8 . An information indication method, comprising:
receiving a physical layer protocol data unit (PPDU), wherein the PPDU comprises sensing indication information, the sensing indication information indicates that the PPDU is a PPDU used for sensing measurement; wherein the PPDU is a directional multi-gigabit (DMG) single carrier (SC) mode PPDU, an enhanced directional multi-gigabit (EDMG) single carrier (SC) mode PPDU, or an EDMG orthogonal frequency division multiplexing (OFDM) mode PPDU; and determining, based on the sensing indication information, that the PPDU is the PPDU used for sensing measurement.

9 . The method according to claim 8 , wherein the PPDU is the EDMG SC mode PPDU, the EDMG SC mode PPDU comprises an EDMG-header-A field, and the EDMG-header-A field carries the sensing indication information.

10 . The method according to claim 9 , any reserved bit in the EDMG-header-A field carries the sensing indication information.

11 . The method according to claim 8 , wherein the PPDU is the EDMG OFDM mode PPDU, the EDMG OFDM mode PPDU comprises an EDMG-header-A field, and the EDMG-header-A field carries the sensing indication information.

12 . The method according to claim 11 , any reserved bit in the EDMG-header-A field carries the sensing indication information.

13 . The method according to claim 8 , wherein the PPDU is the DMG SC mode PPDU, the DMG SC mode PPDU comprises a DMG header field, and an additional PPDU indication field and a training length indication field in the DMG header field carry the sensing indication information.

14 . The method according to claim 13 , wherein the additional PPDU indication field is a B30 field in the DMG header field, and the training length indication field is a B32 field to a B36 field in the DMG header field.

15 . An information indication apparatus, comprising:
a processor, configured to generate a physical layer protocol data unit (PPDU), wherein the PPDU comprises sensing indication information, the sensing indication information indicates that the PPDU is a PPDU used for sensing measurement; wherein the PPDU is a directional multi-gigabit (DMG) single carrier (SC) mode PPDU, an enhanced directional multi-gigabit (EDMG) SC mode PPDU, or an EDMG orthogonal frequency division multiplexing (OFDM) mode PPDU; and a transceiver, configured to send the PPDU.

16 . The apparatus according to claim 15 , wherein the PPDU is the EDMG SC mode PPDU, the EDMG SC mode PPDU comprises an EDMG-header-A field, and the EDMG-header-A field carries the sensing indication information.

17 . The apparatus according to claim 16 , any reserved bit in the EDMG-header-A field carries the sensing indication information.

18 . The apparatus according to claim 15 , wherein the PPDU is the EDMG OFDM mode PPDU, the EDMG OFDM mode PPDU comprises an EDMG-header-A field, and the EDMG-header-A field carries the sensing indication information.

19 . The apparatus according to claim 18 , any reserved bit in the EDMG-header-A field carries the sensing indication information.

20 . The apparatus according to claim 15 , wherein the PPDU is the DMG SC mode PPDU, the DMG SC mode PPDU comprises a DMG header field, and an additional PPDU indication field and a training length indication field in the DMG header field carry the sensing indication information.

Assignees

• Huawei Tech Co Ltd

Inventors

• Du Rui
• Liu Chenchen
• Hu Mengshi
• Naren Gerile
• Han Xiao
• Yang Xun

Classifications

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L27/2603 Primary

  Signal structure ensuring backward compatibility with legacy system · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W84/18

  Self-organising networks, e.g. ad-hoc networks or sensor networks · CPC title

• H04L45/74

  Address processing for routing · CPC title