Patent ID: 8532656
Filing Date: 2013-09-10
Classification: H04L,H04M,H04W,Y02D

Abstract:
1. A method, comprising: generating a Session Initiation Protocol registration message on behalf of a user equipment, the Session Initiation Protocol registration message comprising a Session Initiation Protocol contact identifier for the user equipment; transmitting the Session Initiation Protocol registration message to a remote Session Initiation Protocol registrar device identifying an address of at least one femtocell as a recipient address for Session Initiation Protocol signaling destined for the user equipment; receiving, by a Session Initiation Protocol to Internet Operating System adapter of the at least one femtocell from a core network, message content to be delivered to the user equipment serviced by the at least one femtocell; conveying an authentication challenge by the Session Initiation Protocol to Internet Operating System adapter of the at least one femtocell to a base transceiver station; and transmitting the authentication challenge from the base transceiver station of the at least one femtocell to the user equipment.