US 12,289,269 B2
Port selection for channel state feedback with analog feedforward
Chenxi Hao, Beijing (CN); Liangming Wu, Beijing (CN); Yu Zhang, San Diego, CA (US); Chao Wei, Beijing (CN); Hao Xu, Beijing (CN); and Wanshi Chen, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/754,719
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Oct. 10, 2020, PCT No. PCT/CN2020/120104
§ 371(c)(1), (2) Date Apr. 8, 2022,
PCT Pub. No. WO2021/068915, PCT Pub. Date Apr. 15, 2021.
Prior Publication US 2023/0163911 A1, May 25, 2023
Int. Cl. H04L 12/28 (2006.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01)
CPC H04L 5/0051 (2013.01) [H04B 7/0626 (2013.01); H04B 7/0639 (2013.01)] 35 Claims
OG exemplary drawing
 
1. A method for wireless communication by a user equipment (UE), the method comprising:
selecting one or more channel state information reference signals (CSI-RS) ports, of a plurality of CSI-RS ports, for the UE to report CSI, wherein the selecting the one or more CSI-RS ports comprises:
selecting any one or more of the plurality of CSI-RS ports for the UE to report the CSI; or
selecting the one or more CSI-RS ports based on a grouping of the plurality of CSI-RS ports;
determining a precoding matrix indicator (PMI) formed by a linear combination of the selected one or more CSI-RS ports;
computing at least wideband linear combination coefficients for the selected one or more CSI-RS ports; and
providing the selected one or more CSI-RS ports and the computed wideband linear combination coefficients to a base station (BS) in a CSI report.