Sharp Kabushiki Kaisha Corporation

Tetsuro Moriwaki

Keiichi Hibi

Shohei Yamada

A smooth and seamless terminal switching guaranteeing continuity of communication at an application level is realized. A call control part for setting and managing a physical and logical transmission path between communication terminals, a session management part for managing establishment of data communication between the communication terminals, and a switching request processing unit for controlling interruption and resumption of a session are provided, wherein the switching request processing unit exercises a function to temporarily interrupt a session after receiving a session switching request signal from a communication terminal, a function to instruct the call control part to establish a call connection with a switch destination communication terminal, a function to establish a session with an application on the switch destination communication terminal, and a function to resume, after establishing the session, a session with a communication terminal of an opposite side.

Control system of communication network

To guarantee continuation of communications of the level of the applications, and implement smooth and seamless switching between communication terminals that execute the service. Provided are mobility management means () for performing call control and the like, service management means () for managing a session while controlling a start, suspension, resuming and releasing of session connection, and exerted are a function of receiving a switching request signal from the communication terminal of a switching source, and instructing the mobility management means () to perform call connection to the communication terminal of a switching destination that does not perform communications, another function of notifying the communication terminal of the switching destination of state information of the session executed between a communicating-apparatus communication terminal and the communication terminal of the switching source, and still another function of establishing new session connection between the communication terminal of the switching destination and the communicating-apparatus communication terminal.

Growing community of inventors

Saitama, Japan

Tetsuro Moriwaki