Mobile terminal equipment and packet communication method between terminals
AssigneeHitachi, Ltd.
InventorsYukiko Takeda, Hidenori Inouchi, Takehiro Morishige, Koh Ohnishi, Kiyoshi Ichikawa
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Abstract
A mobile terminal having a packet communication function according to a mobile IP and a communication route optimizing function includes a session controller for setting a session between terminals in accordance with a session control message of a protocol different from the mobile IP. When a session control message from the other party is received in a visited mobile IP network, the session controller executes optimization of a communication route to the other party by the communication route optimizing function before transmitting a response for the received message.
Claims11
Mobile terminal equipment having a packet communication function and a communication route optimizing function according to a mobile IP (Internet Protocol), comprising
- a session controller for setting a session between terminals in accordance with a session control message of a protocol different from the mobile IP,
- the session controller having means for executing, when a session control message from the other party is received in a visited network apart from a home network of the mobile IP, optimization of a communication route to the other party by said communication route optimizing function before sending a response message for the session control message.
A packet communication method between first and second terminals each having a packet communication function and a communication route optimizing function according to a mobile IP (Internet Protocol) comprising the steps of:
- transmitting a session control message from said second terminal to said first terminal when said first terminal exists in a visited network apart from a mobile IP home network;
- executing a communication procedure for optimizing a communication route to said second terminal by said first terminal on reception of said session control message;
- and
- transmitting a response message for said session control message from said first terminal after completion of optimization of said communication route,
- wherein said first and second terminals communicate data packets generated after completion of the session control through said optimized communication route.
Dependencies are inferred from the claim text.