US 12,490,215 B2
Apparatus and method for supporting synchronization of reconfigurable intelligent surface (RIS) reflection pattern in wireless communication system
Woojae Jeong, Gyeonggi-do (KR); Donggu Kim, Gyeonggi-do (KR); Seunghyun Lee, Gyeonggi-do (KR); and Jungsoo Jung, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd., (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Sep. 28, 2023, as Appl. No. 18/476,788.
Claims priority of application No. 10-2022-0130578 (KR), filed on Oct. 12, 2022.
Prior Publication US 2024/0137887 A1, Apr. 25, 2024
Int. Cl. H04W 56/00 (2009.01); H04B 7/04 (2017.01)
CPC H04W 56/0045 (2013.01) [H04B 7/04013 (2023.05)] 20 Claims
OG exemplary drawing
 
1. A method performed by a base station in a wireless communication system, the method comprising:
identifying a delay time caused by a radio unit (RU) buffer;
determining a reconfigurable intelligent surface (RIS) offset value for synchronization of signals transmitted to an RIS, based on the delay time caused by the RU buffer;
transmitting, to the RIS, a first signal to be transmitted to a terminal through a reflection plane of the RIS at a first time point; and
transmitting, to the RIS, a second signal for controlling a reflection pattern of the RIS at a second time point to which the RIS offset value is applied.