US 12,461,226 B2
Radar measurement method and apparatus
Xiao Han, Shenzhen (CN); Cailian Deng, Chengdu (CN); Rui Du, Shenzhen (CN); Chenchen Liu, Shenzhen (CN); Jian Yu, Shenzhen (CN); Meihong Zhang, Shenzhen (CN); Li Yan, Chengdu (CN); and Yan Long, Chengdu (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Guangdong (CN)
Filed on Nov. 9, 2021, as Appl. No. 17/454,101.
Application 17/454,101 is a continuation of application No. PCT/CN2020/089282, filed on May 8, 2020.
Claims priority of application No. 201910390911.2 (CN), filed on May 10, 2019.
Prior Publication US 2022/0066018 A1, Mar. 3, 2022
Int. Cl. G01S 13/76 (2006.01); G01S 7/00 (2006.01); H04W 84/12 (2009.01)
CPC G01S 13/765 (2013.01) [G01S 7/006 (2013.01); H04W 84/12 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A radar measurement method, wherein the method comprises:
generating, by an AP, a first frame, wherein the first frame comprises radar measurement information;
sending, by the AP, the first frame to M stations (STAs) to obtain information corresponding to an object, wherein M is a positive integer, and wherein the first frame is a trigger frame and comprises a trigger type field to instruct at least one of the M STAs to obtain the information corresponding to the object, wherein the trigger type field comprises an identifier that indicates the first frame is used for radar measurement, and wherein the trigger type field instructs at least one of:
the M STAs to get ready for a radar measurement comprising receiving a radar signal initiated by at least one of the M STAs;
each STA in the M STAs to perform a radar measurement comprising transmitting the radar signal; or
a STA that obtains a channel through contention in the M STAs to perform a radar measurement comprising transmitting the radar signal; and
when the first frame is to instruct the M STAs to be ready for the radar measurement, the method further comprises:
sending, by the AP, a first poll frame to a target STA, wherein the target STA is an STA in the M STAs, and the first poll frame is to trigger the target STA to perform radar measurement;
sending, by the AP, a fifth frame to N STAs, wherein the fifth frame is to instruct each STA in the N STAs to be ready for feeding back radar measurement data;
sending, by the AP, a second poll frame to the target STA, wherein the second poll frame is to trigger the target STA to feed back radar measurement data; and
receiving, by the AP, a sixth frame sent by the target STA, wherein the sixth frame comprises the radar measurement data.