US 12,015,467 B2
Coefficients report for compressed CSI feedback
Chenxi Hao, Beijing (CN); Liangming Wu, Beijing (CN); Qiaoyu Li, Beijing (CN); Joseph Binamira Soriaga, San Diego, CA (US); Peter Gaal, San Diego, CA (US); and Wanshi Chen, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/299,250
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Dec. 12, 2019, PCT No. PCT/CN2019/124765
§ 371(c)(1), (2) Date Jun. 2, 2021,
PCT Pub. No. WO2020/119749, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. PCT/CN2018/120515 (WO), filed on Dec. 12, 2018.
Prior Publication US 2022/0029686 A1, Jan. 27, 2022
Int. Cl. H04B 7/06 (2006.01)
CPC H04B 7/0663 (2013.01) [H04B 7/0617 (2013.01); H04B 7/0626 (2013.01); H04B 7/0639 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method for wireless communication by a user equipment (UE), the method comprising:
receiving a channel state information (CSI) report configuration configuring the UE for reporting at least a subset of precoding matrix information including:
a plurality of selected beams;
a frequency domain compression matrix for each of the plurality of selected beams at each of a plurality of taps in a time domain; and
a subset of a plurality of linear combination coefficients associated with the the plurality of selected beams and the frequency domain compression matrix for each of the plurality of selected beams;
determining the subset of the plurality of linear combination coefficients based on a first evaluation and a second evaluation, wherein:
the first evaluation is, for each of the plurality of selected beams, an evaluation of an amplitude of the plurality of linear combination coefficients across the plurality of taps; and
the second evaluation is, for each of the plurality taps, an evaluation of the amplitude of the plurality of linear combination coefficients across the plurality of selected beams; and
reporting the first evaluation and the second evaluation.