US 12,143,191 B2
Systems and methods for uplink codebook based transmission
Yushu Zhang, Beijing (CN); Chunhai Yao, Beijing (CN); Dawei Zhang, Cupertino, CA (US); Haitong Sun, Cupertino, CA (US); Hong He, Cupertino, CA (US); Huaning Niu, Cupertino, CA (US); Oghenekome Oteri, San Diego, CA (US); Wei Zeng, Cupertino, CA (US); and Weidong Yang, San Diego, CA (US)
Assigned to APPLE INC., Cupertino, CA (US)
Appl. No. 17/593,368
Filed by APPLE INC., Cupertino, CA (US)
PCT Filed Jul. 1, 2021, PCT No. PCT/CN2021/103965
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2023/272676, PCT Pub. Date Jan. 5, 2023.
Prior Publication US 2024/0022294 A1, Jan. 18, 2024
Int. Cl. H04L 12/28 (2006.01); H04B 7/0404 (2017.01); H04B 7/0456 (2017.01); H04B 7/06 (2006.01); H04B 17/318 (2015.01); H04L 5/00 (2006.01); H04W 24/08 (2009.01)
CPC H04B 7/06956 (2023.05) [H04B 7/0404 (2013.01); H04B 7/0456 (2013.01); H04B 7/0469 (2013.01); H04B 17/328 (2023.05); H04L 5/0048 (2013.01); H04W 24/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for multi-panel uplink (UL) codebook based transmission by a user equipment (UE), the method comprising:
transmitting, from the UE to a base station, an indication of a UE capability based on an antenna structure comprising multiple antenna panels of the UE;
determining, at the UE, one or more precoders to use for UL transmissions based at least in part on the UE capability, wherein the one or more precoders include a polarization co-phasing factor, an antenna panel co-phasing factor, and a combining weight for antennas for a same polarization,
wherein the polarization co-phasing factor comprises ϕn=ejπn/2 between two orthogonal polarizations, where n is an index corresponding to the polarization co-phasing factor,
wherein the antenna panel co-phasing factor comprises ap=ejπp/2, where p is an index or value corresponding to the antenna panel co-phasing factor, and
wherein the combining weight comprises umk=[1,e2πm/(0×Nk), . . . ,e2π(Nk−1)/(O×Nk)]T, where there are Nk ports in panel k for K antenna panels, m is an index corresponding to the combining weight, O is an oversampling factor, and T is a transpose operation; and
transmitting, from the multiple antenna panels of the UE to the base station, the UL transmissions using the one or more precoders.