US 12,445,257 B2
Method and apparatus for wireless 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 May 6, 2024, as Appl. No. 18/655,836.
Application 18/655,836 is a continuation of application No. 17/643,219, filed on Dec. 8, 2021, granted, now 12,010,068.
Claims priority of application No. 10-2021-0003565 (KR), filed on Jan. 11, 2021.
Prior Publication US 2024/0291622 A1, Aug. 29, 2024
Int. Cl. H04L 5/00 (2006.01)
CPC H04L 5/006 (2013.01) [H04L 5/0048 (2013.01); H04L 5/0082 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wireless communication device comprising:
a plurality of antennas;
a radio-frequency integrated circuit (RFIC) including a switching network connected to the plurality of antennas, wherein the switching network is configured to transmit a sounding reference signal (SRS) switching signal to a base station through at least one antenna of an antenna subset of the plurality of antennas; and
a processor configured to:
determine the antenna subset;
select a precoding matrix indicator (PMI) to be provided to the base station based on a channel state information-reference signal (CSI-RS) transmitted from the base station through a first beam; and
process a signal transmitted from the base station through a second beam determined based on the SRS switching signal and the PMI,
wherein the processor is configured to monitor a gain value of the second beam and determine a final antenna subset based on the monitored gain value of the second beam.