US 12,088,385 B2
Configurations and feedback schemes for compressed channel state information (CSI)
Qiaoyu Li, Beijing (CN); Liangming Wu, Beijing (CN); Chenxi Hao, Beijing (CN); Joseph Binamira Soriaga, San Diego, CA (US); and Hao Xu, Beijing (CN)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/311,773
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Dec. 19, 2019, PCT No. PCT/CN2019/126599
§ 371(c)(1), (2) Date Jun. 8, 2021,
PCT Pub. No. WO2020/125713, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. PCT/CN2018/122393 (WO), filed on Dec. 20, 2018.
Prior Publication US 2022/0029685 A1, Jan. 27, 2022
Int. Cl. H04B 7/06 (2006.01); H04B 7/0456 (2017.01)
CPC H04B 7/0658 (2013.01) [H04B 7/0456 (2013.01); H04B 7/0478 (2013.01); H04B 7/0626 (2013.01); H04B 7/0634 (2013.01); H04B 7/0695 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method for wireless communication by a User Equipment (UE), comprising:
determining a constraint on a total number of transfer domain coefficients to be reported for compressed Channel State Information (CSI) feedback by the UE for a plurality of beams identified for the compressed CSI feedback, wherein each transfer domain coefficient is associated with amplitude information and phase information, and wherein a transfer domain for the transfer domain coefficients is based at least on a set of DFT (Discrete Fourier Transform) bases or a set of DCT (Discrete Cosine Transfer) bases;
selecting from a transfer domain coefficient compression matrix, based on the constraint, a set of one or more transfer domain coefficients to report for each of the beams;
reporting information indicating a number of selected transfer domain coefficients in the set of the one or more transfer domain coefficients for each beam and a location of each transfer domain coefficient within the transfer domain coefficient compression matrix; and
reporting at least the amplitude and phase information for the selected transfer domain coefficients.