US 12,490,070 B2
Apparatus and method for handling deregistration procedure of user equipment for disaster roaming service in wireless network
Lalith Kumar, Bangalore (IN); Aman Agarwal, Bangalore (IN); Samiran Bhowmik, Bangalore (IN); Kailash Kumar Jha, Bangalore (IN); and Mahmoud Watfa, Bangalore (IN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 18/003,861
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
PCT Filed May 17, 2022, PCT No. PCT/KR2022/007058
§ 371(c)(1), (2) Date Dec. 29, 2022,
PCT Pub. No. WO2022/250362, PCT Pub. Date Dec. 1, 2022.
Claims priority of application No. 202141022965 (IN), filed on May 23, 2021; and application No. 202141022965 (IN), filed on May 12, 2022.
Prior Publication US 2023/0370829 A1, Nov. 16, 2023
Int. Cl. H04W 4/90 (2018.01); H04W 4/40 (2018.01); H04W 60/06 (2009.01); H04W 76/50 (2018.01)
CPC H04W 4/90 (2018.02) [H04W 4/40 (2018.02); H04W 60/06 (2013.01); H04W 76/50 (2018.02)] 12 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) in a wireless network, the method comprising:
detecting, a disaster condition in the wireless network;
performing, a registration procedure with a first PLMN on a 3rd Generation Partnership Project (3GPP) access to receive disaster roaming services, wherein the first PLMN is a forbidden PLMN (FPLMN);
performing, a registration procedure with a second PLMN on a non-3GPP access to receive normal service; and
in case that the registration procedure with the second PLMN is successful, performing, a deregistration procedure with the first PLMN on the 3GPP access.