Patent ID: 8433287

Claim:
A first server in electronic communication with a gateway to form an Internet protocol multimedia subsystem (IMS) network, wherein the first server is in electronic communication with a femtocell, the femtocell comprising a Global Positioning System (GPS) module that obtains geolocation information of the femtocell and transmits the geolocation information to the first server, the first server, comprising: a storage unit that stores a predetermined geolocation range value; and a signal processing unit that compares the geolocation information with the predetermined geolocation range value and allows the femtocell access to the IMS network according to a determination by the signal processing unit that the femtocell is within the predetermined geolocation range; a second server in electronic communication with the gateway, the second server allows the femtocell to complete network registration and further allows the femtocell to access to and connect the IMS network; wherein the femtocell further comprises a subscriber identity module (SIM) in electronic communication with the GPS module, the SIM stores a group of identification (ID) information, and the signal processing unit verifies and authenticates the ID information of the femtocell to determine whether the femtocell is applicable to the IMS network, the IMS network comprises a second server in electronic communication with the gateway, the second server allows the femtocell to complete network registration and further allows the femtocell to access to and connect the IMS network; and wherein the gateway is a packet data gateway and is used as a protocol converter to provide protocol conversion, routing data exchange and other protocol servers for the communication between the IMS network and the femtocell.