MOBILITY MANAGING METHOD AND MOBILE TERMINAL

摘要

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 movedin 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 accessed from the other than the belonging domain network (2). This makes it possible to flexibly cope with an incoming call from the external by the use of a representative home address even on the Internet as a distributed network.