| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mobile communications system and a mobile communication method having high security, without the need for complicated maintenance and operations. <P>SOLUTION: The mobile communications system disclosed herein is an enhanced version of an existing mobile communications system, including a home agent for transferring communication packets to mobile communications apparatuses connected to a foreign network. The system disclosed herein includes an address management means for managing a plurality of IP addresses; an address-generating means for assigning any of the IP addresses managed by the address management means as a home address to a mobile communications apparatus; a memory device for storing the home address of the mobile communication apparatus and the identifier of the mobile communications apparatus, in cross-reference with each other; and a sender node for transmitting a communication packet to a transmission destination that is the home address of the memory device, and the memory device is characterized as being attachable to/detachable from the sender node. <P>COPYRIGHT: (C)2007,JPO&INPIT |
