US 11,929,821 B2
Method and apparatus for determining and applying timing advance in communication system
Sungjin Park, Gyeonggi-do (KR); Jeongho Yeo, Gyeonggi-do (KR); Youngbum Kim, Gyeonggi-do (KR); Seho Myung, Gyeonggi-do (KR); Cheolkyu Shin, Gyeonggi-do (KR); Seunghoon Choi, Gyeonggi-do (KR); and Hyunseok Ryu, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd, (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on May 10, 2022, as Appl. No. 17/741,107.
Claims priority of application No. 10-2021-0060285 (KR), filed on May 10, 2021; and application No. 10-2021-0060970 (KR), filed on May 11, 2021.
Prior Publication US 2022/0376778 A1, Nov. 24, 2022
Int. Cl. H04W 84/06 (2009.01); H04B 7/185 (2006.01); H04W 56/00 (2009.01)
CPC H04B 7/18589 (2013.01) [H04W 56/001 (2013.01); H04W 56/0045 (2013.01); H04W 84/06 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) configured to operate in a wireless communication system, the method comprising:
identifying a timing advance (TA) value for transmitting an uplink signal, wherein the TA value is identified based on a first value NTA, a second value NTA,common, and a third value NTA,UE-specific;
receiving a first offset for an uplink transmission timing via higher layer signaling:
receiving a downlink signal indicating a second offset for the uplink transmission timing; and
transmitting the uplink signal based on a timing of the downlink signal, the first offset, the second offset, and the TA value,
wherein the first value NTA is based on one of a random access response or a timing advance medium access control (MAC) control element (CE),
wherein the second value NTA,common is derived from higher layer parameters, and
wherein the third value NTA,uE-specific is obtained by the UE based on a position of the UE and information on a position of a satellite wirelessly connected to the UE.