US 12,261,667 B2
Transmitter beamforming at base station with partial channel information and UE feedback
Hongbing Cheng, San Jose, CA (US); and Federico Penna, San Jose, CA (US)
Assigned to Samsung Electronics Co., Ltd., Yongin-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 21, 2022, as Appl. No. 17/700,264.
Application 17/700,264 is a continuation of application No. 17/020,562, filed on Sep. 14, 2020, granted, now 11,283,507, issued on Mar. 22, 2022.
Claims priority of provisional application 63/055,507, filed on Jul. 23, 2020.
Prior Publication US 2022/0209839 A1, Jun. 30, 2022
Int. Cl. H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01)
CPC H04B 7/0639 (2013.01) [H04B 7/0617 (2013.01); H04L 5/0051 (2013.01); H04L 25/0226 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
inputting precoding matrix indicator (PMI) data and sounding reference signal (SRS) data from a user equipment (UE);
estimating partial SRS channel data based on the inputted SRS data; and
composing a channel state including a beamforming matrix, wherein a first set of columns of the beamforming matrix are obtained from the estimated partial SRS channel data, and a second set of columns of the beamforming matrix are obtained from the inputted PMI data, wherein the first set of columns is different from the second set of columns.