US 11,956,045 B2
Interference suppression method and base station
Yong Yang, Chengdu (CN); Weixin Wang, Shanghai (CN); and Mingyang Sun, Chengdu (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Nov. 18, 2021, as Appl. No. 17/455,527.
Application 17/455,527 is a continuation of application No. PCT/CN2020/091755, filed on May 22, 2020.
Claims priority of application No. 201910429837.0 (CN), filed on May 22, 2019.
Prior Publication US 2022/0077912 A1, Mar. 10, 2022
Int. Cl. H04B 7/06 (2006.01); H04B 17/336 (2015.01); H04L 5/00 (2006.01); H04W 16/28 (2009.01)
CPC H04B 7/0626 (2013.01) [H04B 7/0617 (2013.01); H04B 17/336 (2015.01); H04L 5/0051 (2013.01); H04W 16/28 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method, comprising:
in response to determining M channel state information (CSI) beams for which interference noise power of a demodulation reference signal (DMRS) pilot signal carried on each of the M CSI beams is greater than a first preset value and interference noise power of a sounding reference signal (SRS) pilot signal carried on each of the M CSI beams is greater than a second preset value, performing the following:
obtaining a first angle range corresponding to the M CSI beams, wherein M is a positive integer;
determining at least one null-steering angle based on the first angle range, wherein the at least one null-steering angle belongs to the first angle range;
determining a directivity pattern gain and a suppression multiple that correspond to each null-steering angle in the at least one null-steering angle, wherein each suppression multiple is a ratio of a suppression amount to the corresponding directivity pattern gain; and
determining, for each null-steering angle based on the directivity pattern gain and the suppression multiple that correspond to the each null-steering angle, a cancellation directivity pattern gain corresponding to the each null-steering angle, wherein for the each null steering angle a sum of the cancellation directivity pattern gain and a product of the directivity pattern gain and the suppression multiple corresponding to the each null steering angle is zero.