| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To keep fewer global addresses for communication with a plurality of mobile nodes (MN), and to allow the communication with the MN to be started from either an MN side or a communication opposite party node (CN) side. <P>SOLUTION: A mobile communication system is used, which is based on a mobile IP including: a home agent (HA) with global IP addresses (HoA); and the plurality of MNs belonging to the HA. The HoA is a home address which is common to the plurality of MNs. The HA includes: an interface means for routing a received packet in response to a transfer table; and a position information managdment means for managing the transfer table. The transfer table includes at least correspondence relation between MN c/o addresses (CoA) and port numbers for identifying applications. The transfer destination of the packet received by the HA is discriminated by the combination of the CoA with the port number. Each of the MNs detects change in not less than one among the HoA of the self node, the CoA and the port number, and reports it to the HA. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
