US 11,844,040 B2
Method and apparatus for performing communication based on non terrestrial network related parameter in wireless communication system
Seokmin Shin, Seoul (KR); Haewook Park, Seoul (KR); Kijun Kim, Seoul (KR); and Suckchel Yang, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Jan. 6, 2023, as Appl. No. 18/151,208.
Application 18/151,208 is a continuation of application No. 17/713,816, filed on Apr. 5, 2022.
Claims priority of application No. 10-2021-0044236 (KR), filed on Apr. 5, 2021; application No. 10-2021-0103409 (KR), filed on Aug. 5, 2021; and application No. 10-2021-0113480 (KR), filed on Aug. 26, 2021.
Prior Publication US 2023/0164722 A1, May 25, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 56/00 (2009.01); G01S 19/25 (2010.01); H04W 84/06 (2009.01)
CPC H04W 56/0045 (2013.01) [G01S 19/256 (2013.01); G01S 19/258 (2013.01); H04W 84/06 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
based on first satellite ephemeris information related to a serving satellite and information related to a first validity duration during which the UE can apply the first satellite ephemeris information being received, starting a validity timer with a timer value set to the first validity duration; and
based on second satellite ephemeris information related to the serving satellite and information related to a second validity duration during which the UE can apply second satellite ephemeris information being received, restarting the validity timer with the timer value set to the second validity duration from an epoch time related to the second satellite ephemeris information,
wherein the UE obtains a first timing advance (TA) for the serving satellite based on the first satellite ephemeris information related to the first validity duration, before acquiring the second ephemeris information, and
wherein the UE obtains a second TA for the serving satellite based on the second satellite ephemeris information related to the second validity duration.