Systems and methods to authenticate a non-fifth generation capable device on a residential gateway

A method to authenticate a Non-Fifth Generation Capable (N5GC) device with a Fifth Generation (5G) core network, the method comprising:

• generating, at a wireline-access gateway function (W-AGF), a Registration Request message on behalf of the N5GC device and in response to an Identity Response message associated with the N5GC device, the Registration Request message including a Subscription Concealed Identifier (SUCI) associated with the N5GC device and an N5GC indication;
• sending the Registration Request message from the W-AGF to an Access & Mobility Management Function (AMF) of the 5G core network;
• sending, using the AMF, a first Authentication Request message to an Authentication Server Function (AUSF) of the 5G core network based on the SUCI associated with the N5GC device, the first Authentication Request message including the SUCI and the N5GC indication;
• selecting, at least partly in response to the first Authentication Request message, an authentication type for the N5GC device;
• receiving, at the W-AGF and from the AMF, a second Authentication Request message associated with the 5G core network including an indication of the authentication type;
• and
• forwarding the second Authentication Request message associated with the 5G core network to the N5GC device to cause the N5GC device to be authenticated for the 5G core network.

A method to authenticate a Non-Fifth Generation Capable (NSGC) device with a Fifth Generation (5G) core network, the method comprising:

• sending an Identity Request message from a wireline-access gateway function (W-AGF) to the NSGC device, the W-AGF being connected to the NSGC device through a residential gateway (RG);
• receiving, at the W-AGF, an Identity Response message including a device identifier associated with the NSGC device;
• generating, at the W-AGF, a Registration Request message on behalf of the NSGC device including an NSGC indication;
• sending the Registration Request message from the W-AGF to an Access & Mobility Management Function (AMF) of the 5G core network;
• receiving, at the W-AGF and from the AMF, an Authentication Request message associated with the 5G core network in response to the Registration Request message;
• forwarding the Authentication Request message associated with the 5G core network to the NSGC device to cause the NSGC device to have an authenticated status with respect to the core network;
• sending, from an Authentication Server Function (AUSF) of the 5G core network to a Unified Data Management (UDM) of the 5G core network, an Authentication Result Confirmation Request message including at least the device identifier associated with the NSGC device;
• and
• storing, at the UDM and in response to the Authentication Result Confirmation Request message, an indication of the authenticated status corresponding to the NSGC device.