Communication system and apparatus for providing supplementary service in femto cell

摘要

When a femto cell base station used for a communication system provided with a function of providing a predetermined supplementary service receives first information indicating supplementary service control from a radio terminal, the femto cell base station converts the received information to a SIP (Session Initiation Protocol) message including the first information and transmits the SIP message to a higher apparatus in the communication system.

主权项

1. A gateway system making up a communication system provided with a function of providing a predetermined supplementary service, comprising:
first determining means for determining, upon receiving a SIP (Session Initiation Protocol) message, whether the message is to be transmitted to a core apparatus included in a core network of the communication system or to be transmitted to an apparatus not included in the core network; and transmitting means for transmitting contents of the SIP message, determined by the first determining means to be transmitted to the core apparatus, to the core apparatus, wherein based on whether a BODY section of a received SIP message includes the first information indicating supplementary service control or information indicating an SMS (Short Message Service), the first determining means determines that the SIP message is to be transmitted to the core apparatus when the first information is included and determines that the SIP message is to be transmitted to an apparatus not included in the core network when the information indicating the SMS is included.