Patent ID: 8699416
Filing Date: 2014-04-15
Classification: H04W

Abstract:
1. A communication system having at least UE (User Equipment) and an HLR (Home Location Register) that are used in an IMS (IP Multimedia Subsystem) network, and that comprises: a femtocell base station that makes up a predetermined communication area; and a control unit which controls at least communication between said UE and said HLR; wherein: said femtocell base station and said control unit are present between said UE and said HLR; said femtocell base station includes a transmitting unit which transmits messages received from said UE to said control unit and which transmits messages received from said control unit to said UE; and said control unit both converts messages received from said femtocell base station to messages that can be recognized by said HLR and converts messages received from said HLR to messages that can be recognized by said UE; said control unit comprises: said femtocell base station identifies a message received from said UE as a message corresponding to a location registration request of a CS (Circuit Switching) service, a message corresponding to a location registration request of a PS (Packet Switching) service, or a message corresponding to a PDP (Packet Data Protocol) Activate, and transmits to said relay device a message corresponding to the message received from said UE that was identified; said relay device transmits to said authentication device the message that was received from said femtocell base station; said authentication device identifies the message received from said relay device as the message corresponding to the location registration request of the PS service, the message corresponding to the location registration request of the CS service, or the message corresponding to the PDP Activate and implements control according the message received from said relay device that was identified; said femtocell base station: and said authentication device: