Patent ID: 8249554

Claim:
A method for wireless communications, the method comprising: registering a femtocell with an IP Multimedia Subsystem (IMS), core network to receive IMS services for at least one mobile station located within the femtocell; and registering the at least one mobile station with an application server to provide additional services to the at least one mobile station located within the femtocell, wherein the registering the at least one mobile station with the application server includes, receiving an authentication response to a global challenge from a the at least one mobile station, generating a first Session Initiation Protocol (SIP) message associated with the at least one mobile station based on the authentication response, the first SIP message includes a mobile identification number (MIN) of the at least one mobile station sending the first SIP message to the IMS core network to register the at least one mobile station for the additional services, and receiving a second SIP message from the IMS core network; and providing information to the at least one mobile station regarding the registration for additional services, the first SIP message further includes at least one of an Electronic Serial Number (ESN) of the at least one mobile station, the global challenge, and a time value, and the second SIP message includes a mobile directory number (MDN) for the at least one mobile station.