System, method, and computer-readable medium for mobile-terminated voice call processing for a mobile station attached with an IP-femtocell system

1. A method, comprising:

receiving, by a convergence server, a call request for a mobile station communicably coupled to a femtocell system;

transmitting, by the convergence server, an invite message to the femtocell system;

receiving, from the femtocell system by the convergence server, a paging authentication request created by the femtocell system, the paging authentication request comprising authentication data received from the mobile station by the femtocell system;

generating, by the convergence server, after the mobile station is registered with the femtocell system and authenticated by the convergence server, an authentication token used by the convergence server to validate subsequent invite response messages;

transmitting, by the convergence server, a global challenge response to the femtocell system, wherein the global challenge response includes the authentication token, and wherein the global challenge response includes an indication of authentication success or failure corresponding to a mobile core network; and

determining, by the convergence server, whether the authentication token is present in the subsequent invite response messages received from the femtocell system for the mobile terminated voice call to the mobile station and denying by the convergence server the establishment of session initiation protocol (SIP) calls if the authentication token is not received.

2. The method of claim 1 , further comprising notifying, by the femtocell system, the mobile station that authentication is required by the mobile station for system access.

3. The method of claim 1 , further comprising engaging, by the convergence server, the mobile core network in an authentication process for the mobile station.

4. The method of claim 3 , wherein the convergence server engages the mobile core network in the authentication process responsive to receipt of the paging authentication request.

5. The method of claim 1 , wherein the convergence server is deployed in at least one of an IP core network or an IMS core network.

6. The method of claim 1 , comprising validating, by the convergence server, the mobile station against a subscriber profile maintained by the convergence server.

7. The method of claim 1 , further comprising establishing, by the femtocell system, a voice channel with the mobile station.

8. The method of claim 1 , wherein the voice channel is established with the mobile station responsive to receipt of the global challenge response.

9. A non-transitory computer-readable medium having computer-executable instructions tangibly embodied thereon for execution by a processing system, the computer-executable instructions, that, when executed, cause the processing system to:

receive, by a convergence server, a call request for a mobile station communicably coupled to a femtocell system;

transmit, by the convergence server, an invite message to the femtocell system;

receive, from the femtocell system by the convergence server, a paging authentication request created by the femtocell system, the paging authentication request comprising authentication data received from the mobile station by the femtocell system;

generate, by the convergence server, after the mobile station is registered with the convergence server and authenticated by the convergence server, an authentication token used by the convergence server to validate subsequent invite response messages;

transmit, by the convergence server, a global challenge response to the femtocell system, wherein the global challenge response includes the authentication token, and wherein the global challenge response includes an indication of authentication success or failure corresponding to a mobile core network; and

determine, by the convergence server, whether the authentication token is present in the subsequent invite response messages received from the femtocell system for the mobile terminated voice call to the mobile station and deny by the convergence server the establishment of session initiation protocol (SIP) calls if the authentication token is not received.

10. The non-transitory computer-readable medium of claim 9 , further comprising instructions that, when executed by the processing system, cause the processing system to notify, by the femtocell system, the mobile station that authentication is required by the mobile station for system access.

11. The non-transitory computer-readable medium of claim 9 , wherein the convergence server is deployed in at least one of an IP core network or an IMS core network.

12. The non-transitory computer-readable medium of claim 9 , further comprising instructions that, when executed by the processing system, cause the processing system to validate, by the convergence server, the mobile station against a subscriber profile maintained by the convergence server.

13. The non-transitory computer-readable medium of claim 9 , further comprising instructions that, when executed by the processing system, cause the processing system to establish, by the femtocell system, a voice channel with the mobile station responsive to receipt of the global challenge response.

14. The non-transitory computer-readable medium of claim 9 , further comprising instructions that, when executed by the processing system, cause the processing system to engage, by the convergence server, the mobile core network in an authentication process for the mobile station.

15. The non-transitory computer-readable medium of claim 9 , wherein the mobile core network is engaged in the authentication process for the mobile station responsive to receipt of the paging authentication request.

16. A system, comprising:

a convergence server;

a mobile core network that includes an authentication center and a Home Location Register; and

an Internet Protocol-based femtocell system that provides a radio access point for a mobile station, wherein the convergence server:

receives a call request for a mobile station communicably coupled to a femtocell system;

transmits an invite to the femtocell system;

receives from the femtocell system a paging authentication request created by the femtocell system, the paging authentication request comprising authentication data received from the mobile station by the femtocell system;

generates an authentication token used to validate subsequent invite response messages after the mobile station is registered with the convergence server and authenticated by the convergence server;

transmits a global challenge response to the femtocell system including the authentication token and the global challenge response further including an indication of authentication success or failure corresponding to the mobile core network; and

determines whether the authentication token is present in the subsequent invite response messages received from the femtocell system for the mobile terminated voice call to the mobile station and denies the establishment of session initiation protocol (SIP) calls if the authentication token is not received.

17. The system of claim 16 , wherein the femtocell system notifies the mobile station that authentication is required by the mobile station for system access.

18. The system of claim 16 , wherein the convergence server is deployed in at least one of an IP core network or an IMS core network.

19. The system of claim 16 , wherein the convergence server validates the mobile station against a subscriber profile maintained by the convergence server.

20. The system of claim 16 , wherein the femtocell system establishes a voice channel with the mobile station responsive to receipt of the global challenge response.