Patent ID: 8861404
Filing Date: 2014-10-14
Classification: H04L

Abstract:
1. A system comprising: a Serving-Call Session Control Function (S-CSCF) of an IP Multimedia Subsystem (IMS) network, the S-CSCF configured to receive a first register request sent by a Proxy-Call Session Control Function (P-CSCF) when a communication device of a user attempts to register with the IMS network; the S-CSCF is further configured to identify access network information inserted in the first register request, to insert the access network information in a second register request, and to transmit the second register request to a Home Subscriber Server (HSS) for storing the access network information in a subscriber profile for the user; the S-CSCF is further configured to receive the subscriber profile from the HSS, and to identify a geographic location for the user based on the access network information in the subscriber profile.