US 12,244,382 B2
Channel state information feedback method and communications apparatus
Shibin Ge, Shanghai (CN); Huangping Jin, Shanghai (CN); Xiaohan Wang, Shanghai (CN); Yiling Yuan, Shanghai (CN); and Xiaoyan Bi, Ottawa (CA)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Aug. 12, 2022, as Appl. No. 17/887,209.
Application 17/887,209 is a continuation of application No. PCT/CN2020/075436, filed on Feb. 14, 2020.
Prior Publication US 2022/0416866 A1, Dec. 29, 2022
Int. Cl. H04B 7/06 (2006.01); H04B 7/0456 (2017.01)
CPC H04B 7/0626 (2013.01) [H04B 7/0456 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A communications method, comprising:
receiving, by a terminal, first indication information from a network device, wherein the first indication information indicates a type of a right multiplication matrix in a first codebook, wherein the first codebook satisfies a formula W=W1W2WfH, where W is the first codebook, W1 is a port selection matrix, W2 is a linear superposition coefficient matrix, WfH is a conjugate transpose of Wf, and Wf is the right multiplication matrix; and
determining, by the terminal, channel state information based on the first indication information.