US 12,143,812 B2
Enabling roaming with authentication and key management for applications
Andreas Kunz, Ladenburg (DE); and Sheeba Backia Mary Baskaran, Friedrichsdorf (DE)
Assigned to Lenovo (Singapore) Pte. Ltd., New Tech Park (SG)
Filed by Lenovo (Singapore) Pte. Ltd., New Tech Park (SG)
Filed on Oct. 29, 2021, as Appl. No. 17/515,238.
Prior Publication US 2023/0136693 A1, May 4, 2023
Int. Cl. H04W 12/0431 (2021.01); H04W 12/033 (2021.01); H04W 12/041 (2021.01); H04W 12/08 (2021.01)
CPC H04W 12/0431 (2021.01) [H04W 12/033 (2021.01); H04W 12/041 (2021.01); H04W 12/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of a network apparatus, comprising:
receiving a name of a serving network of a user equipment (“UE”) from an authentication server function (“AUSF”) in a home public land mobile network (“HPLMN”), the name for the serving network received as part of an authentication and key management for applications (“AKMA”) key registration request;
determining, based on the name for the serving network, that the UE is roaming in a visited PLMN (“VPLMN”) that is different from the HPLMN associated with the UE;
selecting a network function within the serving network for provisioning an AKMA security context for an application function (“AF”) based on the received name for the serving network, wherein at least one AKMA capability and an address of the network function of the VPLMN are configured based on at least one service level agreement (“SLA”) associated with the HPLMN; and
sending the AKMA security context to the network function.