US 12,035,218 B2
Method and apparatus for handling session in a wireless communication system
Lalith Kumar, Bengaluru (IN); Kundan Tiwari, Sitamarhi (IN); Ricky Kaura, Middlesex (GB); and Anikethan Ramakrishna Vijaya Kumar, Bengaluru (IN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Nov. 18, 2021, as Appl. No. 17/530,208.
Application 17/530,208 is a continuation of application No. 16/994,450, filed on Aug. 14, 2020, granted, now 11,206,525.
Claims priority of application No. 201941032934 (IN), filed on Aug. 14, 2019; and application No. 201941032934 (IN), filed on Jul. 28, 2020.
Prior Publication US 2022/0086616 A1, Mar. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 4/90 (2018.01); H04W 60/02 (2009.01); H04W 76/27 (2018.01); H04W 76/50 (2018.01); H04W 80/10 (2009.01)
CPC H04W 4/90 (2018.02) [H04W 60/02 (2013.01); H04W 76/27 (2018.02); H04W 76/50 (2018.02); H04W 80/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method performed by an access and mobility management function (AMF) entity in a wireless communication system, the method comprising:
identifying whether to release all protocol data unit (PDU) sessions not associated with an emergency service, based on receiving a request for a deregistration procedure for a user equipment (UE) that has a PDU session associated with the emergency service from another network entity;
releasing the all PDU sessions not associated with the emergency service; and
transmitting, to the UE, a configuration update message,
wherein the configuration update message includes information indicating that the UE is registered for the emergency service, and
wherein the UE is determined to be only registered for the emergency service in case that the configuration update message includes the information indicating that the UE is registered for the emergency service.