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

Claim 5:
6. A method performed by a session management function (SMF) in a wireless communication system, the method comprising:
receiving, from an access and mobility management function (AMF), a second message including information for requesting user plane activation of at least one always-on protocol data unit (PDU) session, which is omitted from a list of PDU sessions to be activated of a user equipment (UE) included in a first message transmitted from the UE to the AMF;
receiving, from the AMF, information on a connection management-connected (CM-connected) state notification of the UE; and
identifying whether the at least one always-on PDU session has been omitted from the list of PDU sessions to be activated.