CPC H04W 60/005 (2013.01) [H04W 12/06 (2013.01); H04W 48/20 (2013.01); H04W 12/71 (2021.01)] | 11 Claims |
1. A method of registering a user equipment (UE) at a second network via a first network, by an access and mobility management function (AMF) of the first network in a wireless communication, the method comprising:
receiving, from the UE, a registration request message comprising at least one of first network identification (ID) information, ID information of the UE in the first network, second network ID information, and ID information of the UE in the second network;
selecting an authentication server function (AUSF) of the first network which is configured to perform a first authentication procedure of service subscription authentication for the UE in the first network;
performing the first authentication procedure with the AUSF of the first network and unified data management (UDM) of the first network;
determining, based on a result of the first authentication procedure, whether to perform a second authentication procedure of service subscription authentication for the UE in the second network;
performing, based on a result of the determining, the second authentication procedure with an AUSF of the second network and UDM of the second network; and
transmitting, to the UE, a registration acceptance message comprising information of at least one of the result of the first authentication procedure and a result of the second authentication procedure.
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