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

Claim 0:
1. A method for establishing a user-requested protocol data unit (PDU) session in a user's visited public land mobile network (VPLMN), the method performed by a session management function (V-SMF) in the VPLMN and comprising:
receiving, from an access and mobility management function (AMF) in the VPLMN, a PDUSession_CreateSMContext Request to establish the PDU session to be routed through the user's home PLMN (HPLMN), wherein the PDUSession_CreateSMContext Request identifies a session management function (H-SMF) in the user's HPLMN;
sending, 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
receiving, 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.