US 12,284,018 B2
Precoding vector indication method, precoding vector determining method, and communications apparatus
Huangping Jin, Shanghai (CN); Xiaohan Wang, Shanghai (CN); and Xiaoyan Bi, Shanghai (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Apr. 27, 2021, as Appl. No. 17/241,165.
Application 17/241,165 is a continuation of application No. PCT/CN2019/110939, filed on Oct. 14, 2019.
Claims priority of application No. 2018112631101.1 (CN), filed on Oct. 27, 2018.
Prior Publication US 2021/0250076 A1, Aug. 12, 2021
Int. Cl. H04B 7/06 (2006.01); H04L 1/1607 (2023.01)
CPC H04B 7/0663 (2013.01) [H04B 7/0626 (2013.01); H04B 7/0634 (2013.01); H04L 1/1614 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A precoding vector indication method, comprising:
generating a channel state information (CSI) report, wherein the CSI report is used to indicate M space-frequency units and a weighting coefficient of a part or all of the M space-frequency units, wherein each of the M space-frequency units corresponds to one beam vector and one frequency domain vector, and wherein the CSI report comprises an indication of a quantity of non-zero-amplitude weighting coefficients in M weighting coefficients corresponding to the M space-frequency units, or an indication of a quantity of zero-amplitude weighting coefficients in the M weighting coefficients; and
sending the CSI report to a network device, wherein the weighting coefficient indicated by the CSI report is used to determine a weighted sum of the part or all of the M space-frequency units, and the weighted sum is used to determine a precoding vector of a plurality of frequency domain units.