US 12,010,068 B2
Method and apparatus communication using beam-forming in wireless communication system
Junho Lee, Hwaseong-si (KR); Jaein Kim, Seoul (KR); Huiwon Je, Osan-si (KR); and Jinwon Choi, Seongnam-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Dec. 8, 2021, as Appl. No. 17/643,219.
Claims priority of application No. 10-2021-0003565 (KR), filed on Jan. 11, 2021.
Prior Publication US 2022/0224461 A1, Jul. 14, 2022
Int. Cl. H04L 5/00 (2006.01)
CPC H04L 5/006 (2013.01) [H04L 5/0048 (2013.01); H04L 5/0082 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of operating a wireless communication device including a plurality of antennas, the method comprising:
determining a plurality of antenna subsets, each including at least two of the plurality of antennas;
transmitting a sounding reference signal (SRS) switching signal, comprising a plurality of SRSs, to a base station through the plurality of antenna subsets sequentially in an order of a first one of the antenna subsets having a largest separation distance between the at least two antennas thereof to a last one of the antenna subsets having a shortest separation distance between the at least two antennas thereof;
receiving a channel state information-reference signal (CSI-RS) transmitted from the base station through a first beam;
selecting a precoding matrix indicator (PMI) based on the CSI-RS;
transmitting the selected PMI to the base station; and
receiving a signal, transmitted from the base station through a second beam determined based on the SRS switching signal and the PMI.