US 11,943,842 B2
Secondary authorization at PDU session establishment for home routed roaming
Juying Gan, Shanghai (CN); Yunjie Lu, Shanghai (CN); and Yong Yang, Kållered (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Dec. 1, 2022, as Appl. No. 18/072,803.
Application 18/072,803 is a continuation of application No. 17/147,563, filed on Jan. 13, 2021, granted, now 11,546,966.
Application 17/147,563 is a continuation of application No. 16/382,291, filed on Apr. 12, 2019, granted, now 10,925,113, issued on Feb. 16, 2021.
Claims priority of provisional application 62/805,128, filed on Feb. 13, 2019.
Prior Publication US 2023/0112860 A1, Apr. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 80/10 (2009.01); H04W 12/06 (2021.01); H04W 76/11 (2018.01); H04W 84/04 (2009.01)
CPC H04W 80/10 (2013.01) [H04W 12/06 (2013.01); H04W 76/11 (2018.02); H04W 84/042 (2013.01)] 20 Claims
OG exemplary drawing
 
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.