MOBILE STATION AND COMMUNICATION METHOD

摘要

Provided are a mobile station and a communication method wherein even if an IP-CAN Bearer, which is a logical communication path used for SIP and audio media, is released for some reason, a state that no incoming calls can be received can be prevented from continuing for a long time. UE (100), which can connect to an access network complying with the internet protocol, executes a registration with an IP multimedia subsystem complying with the internet protocol. The UE (100) comprises: a bearer establishing unit (110) that establishes an IP-CAN Bearer that is a logical communication path between the UE (100) and a PGW constituting the access network; and a registration processing unit (120) that executes a registration of the mobile station with the IP multimedia subsystem when the bearer establishing unit (110) establishes the IP-CAN Bearer.