MOBILE COMMUNICATION METHOD THROUGH IP NETWORK

摘要

PROBLEM TO BE SOLVED: To communicate with a mobile terminal that moves between different networks even without mounting a mobile-IP(Internet protocol) function on the existing equipment and also to effectively utilize the resources of a junction network in mobile communication through an IP network. SOLUTION: A communication application 211 and a junction process 212 on the mobile terminal 210 are connected by an internal connection 241. The junction process 212 on the mobile terminal 210 is connected to a representative process 221 on a home agent by a junction connection 242. The representative process 221 is also connected to a communication application 231 on the host of the opposite communication party by an external connection 243. The mobile terminal 210 is connected directly to the host 230 of the opposite communication party to perform two-way communication while the home agent 220 intensively manages information on the moving state of the portable terminal.