US 12,132,549 B2
Compressed CSI feedback for non-contiguous frequency resources
Chenxi Hao, Beijing (CN); Liangming Wu, Beijing (CN); Qiaoyu Li, Beijing (CN); Min Huang, Beijing (CN); Joseph Binamira Soriaga, San Diego, CA (US); and Wanshi Chen, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/298,913
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Dec. 11, 2019, PCT No. PCT/CN2019/124534
§ 371(c)(1), (2) Date Jun. 1, 2021,
PCT Pub. No. WO2020/119715, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. PCN/CN2018/120197 (WO), filed on Nov. 12, 2018.
Prior Publication US 2022/0038159 A1, Feb. 3, 2022
Int. Cl. H04B 7/06 (2006.01); H04B 7/0456 (2017.01); H04L 5/00 (2006.01); H04W 28/06 (2009.01)
CPC H04B 7/0658 (2013.01) [H04B 7/0469 (2013.01); H04B 7/0478 (2013.01); H04B 7/0626 (2013.01); H04B 7/0639 (2013.01); H04B 7/066 (2013.01); H04B 7/0695 (2013.01); H04L 5/0037 (2013.01); H04L 5/0041 (2013.01); H04W 28/06 (2013.01)] 26 Claims
OG exemplary drawing
 
9. A method for wireless communication by a base station (BS), the method comprising:
sending a channel state information (CSI) report configuration configuring a user equipment (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 beams at each of a plurality of taps in the time domain, and a subset of a plurality of linear combination coefficients associated with the frequency domain compression matrices and the plurality of beams;
sending the UE a configuration of non-contiguous sets of contiguous frequency resources for CSI reporting;
receiving an indication from the UE of a nominal discrete Fourier transform (DFT)-based matrix used for frequency domain compression at the UE; and
performing separate frequency domain decompression of the precoding matrix information from the UE, based on the nominal DFT-based matrix, for each set of the non-contiguous sets of contiguous frequency resources to obtain the precoding matrix information.