US 11,689,262 B2
Communication device for performing beamforming and operating method thereof
Yongin Choi, Seoul (KR); Yangsoo Kwon, Seoul (KR); Joonsung Kim, Hwaseong-si (KR); Jinwoo Oh, Seogwipo-si (KR); Mingoo Kim, Hwaseong-si (KR); Inhyoung Kim, Yongin-si (KR); Youngseok Jung, Suwon-si (KR); and Jinwon Choi, Seongnam-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Dec. 1, 2021, as Appl. No. 17/539,769.
Claims priority of application No. 10-2020-0167664 (KR), filed on Dec. 3, 2020; and application No. 10-2021-0014399 (KR), filed on Feb. 1, 2021.
Prior Publication US 2022/0182115 A1, Jun. 9, 2022
Int. Cl. H04B 7/02 (2018.01); H04B 7/06 (2006.01)
CPC H04B 7/0615 (2013.01) [H04B 7/0639 (2013.01); H04B 7/0695 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An operating method of a communication device for providing a beamformed transmission signal to a plurality of terminals, the operating method comprising:
determining a target transmission vector based on an area restriction condition, the area restriction condition being defined such that a strength of the beamformed transmission signal with respect to each of the plurality of terminals is amplified based on constructive interference generated from other terminals among the plurality of terminals;
generating a beam selection matrix for selecting a portion of antennas from among a plurality of antennas based on the target transmission vector and a beam selection condition;
generating a precoding matrix based on the target transmission vector and the beam selection matrix; and
generating the beamformed transmission signal based on the beam selection matrix and the precoding matrix.