	US 12,470,266 B2
	Method and apparatus for codebook design for closed loop operation
Abdelrahman Mohamed Ahmed Mohamed Ibrahim, San Diego, CA (US); Juergen Cezanne, Ocean Township, NJ (US); Renqiu Wang, San Diego, CA (US); Danlu Zhang, San Diego, CA (US); Naga Bhushan, San Diego, CA (US); Pinar Sen, San Diego, CA (US); Seyong Park, San Diego, CA (US); Yu Zhang, San Diego, CA (US); Muhammad Sayed Khairy Abdelghaffar, San Jose, CA (US); Krishna Kiran Mukkavilli, San Diego, CA (US); Hwan Joon Kwon, San Diego, CA (US); and Tingfang Ji, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 18/689,322
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Nov. 18, 2021, PCT No. PCT/CN2021/131428 § 371(c)(1), (2) Date Mar. 5, 2024, PCT Pub. No. WO2023/087203, PCT Pub. Date May 25, 2023.
Prior Publication US 2024/0380450 A1, Nov. 14, 2024
Int. Cl. H04B 7/0456 (2017.01)

CPC H04B 7/0456 (2013.01)

30 Claims

1. A method for wireless communications at a user equipment (UE), comprising:

receiving, from a network entity, a plurality of channel state information reference signals;

estimating a channel based at least in part on the plurality of channel state information reference signals;

calculating a spectral efficiency for one or more precoders of a set of precoders associated with the channel for a line-of-sight multiple-input multiple-output mode, wherein the one or more precoders of the set of precoders include a first component associated with an estimated phase of the channel and a second component associated with a distance between the UE and the network entity; and

transmitting, to the network entity, a report indicating a precoder of the set of precoders, the precoder selected based at least in part on calculating the spectral efficiency.