US Patent No. 10,925,113

SECONDARY AUTHORIZATION AT PDU SESSION ESTABLISHMENT AT HOME ROUTED ROAMING


Patent No. 10,925,113
Issue Date February 16, 2021
Title Secondary Authorization At Pdu Session Establishment At Home Routed Roaming
Inventorship Juying Gan, Shanghai (CN)
Yunjie Lu, Shanghai (CN)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,925,113

1. A method, performed by a session management function (V-SMF) of a visited public land mobile network (VPLMN) for establishing a user-requested PDU session to be routed through the user's home PLMN (HPLMN) the method comprising:receiving, a first request to establish a home-routed PDU session, wherein the first request identifies an SMF, H-SMF, in the HPLMN;
sending, to the H-SMF, a second request to create the home-routed PDU session, wherein the second request includes an identifier of a resource in the V-SMF that is associated with the PDU session; and
receiving, from the H-SMF in response to the second request, an identifier of a resource in the H-SMF that is associated with the PDU session and allows the V-SMF to address services of the H-SMF related to the PDU session.