US 11,811,471 B2
Channel measurement method and communications apparatus
Zhimeng Zhong, Moscow (RU); Huangping Jin, Shanghai (CN); Haifan Yin, Shenzhen (CN); Xiaoyan Bi, Ottawa (CA); and Li Fan, Shanghai (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Nov. 7, 2022, as Appl. No. 17/982,239.
Application 17/982,239 is a continuation of application No. 17/347,903, filed on Jun. 15, 2021, granted, now 11,689,256.
Application 17/347,903 is a continuation of application No. PCT/CN2019/124505, filed on Dec. 11, 2019.
Claims priority of application No. 201811550306.9 (CN), filed on Dec. 18, 2018.
Prior Publication US 2023/0064117 A1, Mar. 2, 2023
Int. Cl. H04W 72/23 (2023.01); H04B 7/0456 (2017.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01)
CPC H04B 7/0456 (2013.01) [H04L 5/0048 (2013.01); H04L 25/0202 (2013.01); H04W 72/23 (2023.01)] 25 Claims
OG exemplary drawing
 
1. A method, comprising:
transmitting a precoded reference signal, wherein the precoded reference signal is obtained by precoding a reference signal based on K angle vectors and L delay vectors; and
receiving first indication information, wherein:
the first indication information indicates P weighting coefficients corresponding to P angle-delay pairs;
the P weighting coefficients are determined by using the precoded reference signal;
the P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix;
each of the P angle-delay pairs comprises one of the K angle vectors and one of the L delay vectors; and
P, K, and L are all positive integers.