PACKET COMMUNICATION SYSTEM, COMMUNICATION NETWORK, AND IP ADDRESS SELECTING METHOD IN MOBILE NODE

摘要

PROBLEM TO BE SOLVED: To provide a communication IP address selecting method capable of maintaining a session with the other party of communication even if a mobile node moves with less traffic in a network.

SOLUTION: There are provided a means for discriminating the state of area to which a mobile node is connected, and a means for monitoring the IP address which an application activated by the mobile node uses for communication. A mobile IP address is so selected that the mobile node can maintain a session with sure even in the area which is the destination of movement.

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