US 12,225,604 B2
Method and apparatus for supporting various services in wireless communication system
Sangsoo Jeong, Suwon-si (KR); and Hoyeon Lee, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Dec. 21, 2023, as Appl. No. 18/393,308.
Application 18/393,308 is a continuation of application No. 17/651,024, filed on Feb. 14, 2022, granted, now 11,903,052.
Application 17/651,024 is a continuation of application No. 16/900,736, filed on Jun. 12, 2020, granted, now 11,252,769, issued on Feb. 15, 2022.
Claims priority of application No. 10-2019-0071117 (KR), filed on Jun. 14, 2019; and application No. 10-2020-0044347 (KR), filed on Apr. 10, 2020.
Prior Publication US 2024/0121834 A1, Apr. 11, 2024
Int. Cl. H04W 76/12 (2018.01); H04W 60/06 (2009.01)
CPC H04W 76/12 (2018.02) [H04W 60/06 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for operating a network node in a wireless communication system, the method comprising:
receiving, from a user equipment (UE) supporting a first radio access technology (RAT) and a second RAT, a deregistration request message;
determining whether a usage reporting for the second RAT is required for a protocol data unit (PDU) session established for the UE;
in case that the usage reporting for the second RAT is required for the PDU session, transmitting, to the UE, a deregistration accept message, and transmitting, to a radio access node (RAN) associated with the UE, a N2 UE context release request message for a N2 signaling connection release;
waiting for completion of the N2 signaling connection release, to receive the usage reporting for the second RAT from the RAN; and
transmitting, to a session management function (SMF), a PDU session release request message to release the PDU session.