Patent ID: 11909828
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method performed by an access and mobility management function (AMF) in a wireless communication system, the method comprising:
receiving, from a user equipment (UE), a first message including a list of protocol data unit (PDU) sessions to be activated;
identifying, based on UE context information of the UE, whether identifiers (IDs) of all of always-on protocol data unit (PDU) sessions are included in the list of PDU sessions to be activated; and
in case that at least one always-on PDU session omitted from the list of the PDU sessions to be activated is identified, transmitting, to a session management function (SMF), a second message including information for requesting user plane activation of the at least one always-on PDU session.