	US 12,108,363 B2
	Method and user equipment for handling service connectivity in wireless communication system
Pavan Kumar Devarayanigari, Bangalore (IN); Ramkumar Thirumalli Sureshsah, Bangalore (IN); Venkata Anil Kumar Karamsetti, Bangalore (IN); Bharat Vinayak Bhat, Bangalore (IN); and Lalith Kumar, Bangalore (IN)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Nov. 22, 2021, as Appl. No. 17/533,047.
Application 17/533,047 is a division of application No. 16/595,638, filed on Oct. 8, 2019, granted, now 11,184,876.
Claims priority of application No. 201841038035 (IN), filed on Oct. 8, 2018; and application No. 201841038035 (IN), filed on Oct. 7, 2019.
Prior Publication US 2022/0086799 A1, Mar. 17, 2022
Int. Cl. H04W 68/02 (2009.01); H04L 61/5076 (2022.01); H04W 4/14 (2009.01); H04W 8/02 (2009.01); H04W 60/04 (2009.01); H04W 72/51 (2023.01); H04W 76/38 (2018.01); H04L 101/654 (2022.01)

CPC H04W 68/02 (2013.01) [H04L 61/5076 (2022.05); H04W 4/14 (2013.01); H04W 8/02 (2013.01); H04W 60/04 (2013.01); H04W 72/51 (2023.01); H04W 76/38 (2018.02); H04L 2101/654 (2022.05)]

20 Claims

1. A method for handling a first service connection in a wireless communication system, comprising:

detecting, by a User Equipment (UE), a Mobility Management (MM) service state of the UE is set to ATTEMPTING TO UPDATE;

starting, by the UE, a timer corresponding to the MM service state being set to ATTEMPTING TO UPDATE, the timer having an expiry time;

receiving, by the UE, a paging message including an International Mobile Subscriber Identity (IMSI) before the timer reaches the expiry time;

establishing, by the UE, a Radio Resource Control (RRC) connection with a base station to perform a second service connection associated with the paging message;

performing, by the UE, a first location area updating procedure with the base station in response to the detecting the MM service state is set to ATTEMPTING TO UPDATE, determining the timer was running when the receiving was performed, and releasing the RRC connection with the base station when the second service connection is disconnected, and a Temporary Mobile Subscriber Identity (TMSI) reallocation procedure not having been performed while the RRC connection was established; and

establishing, by the UE, the first service connection with the base station using a valid TMSI obtained during the first location area updating procedure.