| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a mobility managing method and mobile terminal that, even when the mobile terminal is changed in its home address upon moving (roaming) between the mobile communication networks different in service form by communication entrepreneur, an incoming call from the external can be ensured by the use of a representative home address, to thereby flexibly cope with the Internet, which is a distributed network. <P>SOLUTION: In a mobile communication system using a mobile IP, a mobile terminal 10 determines a main home agent 50-1 and a main home address. When the mobile terminal 10 moved to a network 2 different in service form, a home address for use on a moved-in domain network is registered as a primary care of address to the main home agent 50-1, thereby enabling communications by using the main home address even upon access from other than the belonging domain network 2. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
