US 12,438,777 B2
Method and apparatus for providing service in wireless communication system
Hoyeon Lee, Suwon-si (KR); and Sangsoo Jeong, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Oct. 24, 2022, as Appl. No. 17/972,081.
Application 17/972,081 is a continuation of application No. 17/135,229, filed on Dec. 28, 2020, granted, now 11,516,859.
Claims priority of application No. 10-2020-0000452 (KR), filed on Jan. 2, 2020; and application No. 10-2020-0019863 (KR), filed on Feb. 18, 2020.
Prior Publication US 2023/0037559 A1, Feb. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 41/0894 (2022.01); H04W 4/50 (2018.01); H04W 48/16 (2009.01); H04W 76/12 (2018.01)
CPC H04L 41/0894 (2022.05) [H04W 4/50 (2018.02); H04W 48/16 (2013.01); H04W 76/12 (2018.02)] 9 Claims
OG exemplary drawing
 
1. A method performed by an access and mobility management function (AMF) in a wireless communication, the method comprising:
transmitting, to a policy control function (PCF), a policy create request message including an allowed network slice selection assistance information (NSSAI);
receiving, from the PCF, a policy create response message including first session management function (SMF) selection management information and information on a policy control request trigger including change of the allowed NSSAI;
identifying whether the allowed NSSAI is changed;
in case that the allowed NSSAI is changed, transmitting, to the PCF, a policy update request message including a new allowed NSSAI; and
receiving, from the PCF, a policy update response message including second SMF selection management information, wherein the second SMF selection management information is applied to a new protocol data unit (PDU) session only except already established PDU session.