US 11,991,534 B2
Signal processing method and network device
Jie Feng, Shanghai (CN); and Yiwei Hong, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on May 24, 2022, as Appl. No. 17/752,308.
Application 17/752,308 is a continuation of application No. PCT/CN2019/120672, filed on Nov. 25, 2019.
Prior Publication US 2022/0286869 A1, Sep. 8, 2022
Int. Cl. H04W 16/28 (2009.01); H04B 7/0456 (2017.01); H04B 7/06 (2006.01); H04W 72/0453 (2023.01)
CPC H04W 16/28 (2013.01) [H04B 7/0456 (2013.01); H04B 7/0617 (2013.01); H04W 72/0453 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A signal processing method, comprising:
obtaining, by a network device, a scattering parameter matrix of passive echoes in an antenna system, wherein the antenna system comprises k antennas, and k is a positive integer;
determining, by the network device, m virtual user directions based on the scattering parameter matrix of the passive echoes, wherein the m virtual user directions are m directions in which total signal strength of the passive echoes is highest, and m is a positive integer; and
forming, by the network device, a target beam based on n real user directions and the m virtual user directions, wherein one or more nulls of the target beam are aligned with the m virtual user directions, n is a positive integer, and n+m≤k.