US 12,477,409 B2
Implementing the idle mode while out of a RAN coverage area
Yung-Lan Tseng, Taipei (TW); Chien-Chun Cheng, Taipei (TW); Hung-Chen Chen, Taipei (TW); and Yen-Hua Li, Taipei (TW)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Aug. 4, 2022, as Appl. No. 17/881,167.
Claims priority of provisional application 63/203,922, filed on Aug. 4, 2021.
Prior Publication US 2023/0047987 A1, Feb. 16, 2023
Int. Cl. H04W 36/00 (2009.01); H04W 36/08 (2009.01); H04W 36/32 (2009.01); H04W 76/20 (2018.01); H04W 76/30 (2018.01); H04W 84/06 (2009.01)
CPC H04W 36/0058 (2018.08) [H04W 36/08 (2013.01); H04W 36/322 (2023.05); H04W 76/20 (2018.02); H04W 76/30 (2018.02); H04W 84/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a user equipment (UE) connected to a serving Radio Access Network (RAN) through a first serving cell, the serving RAN comprising a Non-Terrestrial Network (NTN), the method comprising:
receiving, from the first serving cell, satellite information regarding a coverage area of the serving RAN;
determining, based on the satellite information, that the UE will be disconnected from the serving RAN by moving out of the coverage area of the serving RAN after a specific period of time; and
maintaining an Access Stratum (AS) layer configuration of the UE, wherein the UE forgoes performing tasks associated with an Idle mode of the UE while the UE is staying out of the coverage area of the serving RAN and is disconnected from the serving RAN, the tasks associated with the Idle mode of the UE comprising at least a RAN notification area update procedure.