Patent ID: 11943842
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A session management function (V-SMF) in a user's visited public land mobile network (VPLMN), the V-SMF comprising:
a network interface configured to communicate with other network functions in the VLPMN and in the user's home PLMN (HPLMN); and
processing circuitry operably coupled to the network interface, whereby the processing circuitry and the network interface are configured to:
receive, from an access and mobility management function (AMF) in the VPLMN, a PDUSession_CreateSMContext Request to establish a protocol data unit (PDU) session to be routed through the user's HPLMN, wherein the PDUSession_CreateSMContext Request identifies a session management function (H-SMF) in the user's HPLMN;
send, to the identified H-SMF, a PDUSession_Create Request to create the PDU session, wherein the PDUSession_Create Request includes an identifier of a session management (SM) context, in the V-SMF, that is associated with the PDU session; and
receive, from the H-SMF, a PDUSession_Update Request that includes an identifier of an SM context, in the H-SMF, that is associated with the PDU session.