Patent ID: 11962585
Assignee: CISCO TECHNOLOGY, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 18:
19. The 3GPP-based network of claim 16, wherein the control plane function for mobility management and/or proxy thereof is further configured to:
send to the DNS server a request for a record lookup based on the realm name, and receive from the DNS server a response including one or more records indicating one or more host servers respectively associated with one or more authentication services, wherein the request for the record lookup based on the realm name comprises a Name Authority Pointer (NAPTR) record lookup for one or more records comprising one or more NAPTR records;
selecting one of the one or more authentication services as a selected authentication service according to a requirement or a preference;
send to the DNS server a request for a service record lookup based on a selected one of the one or more NAPTR records corresponding to the selected authentication service, and receive from the DNS server a response including one or more service records, wherein the request for the service record lookup comprises a service (SRV) record lookup for one or more service records comprising one or more SRV records; and
send to the DNS server a request for an address record lookup based on a selected one of the one or more SRV records, and receive from the DNS server a response including the address of the server for the authentication.