| 摘要 |
<p>In a mobile IP packet communication system including mobile terminals (8), radio base stations (6), base station control apparatuses (5), subscriber packet exchange apparatuses (8), a gateway and packet data exchange apparatus (1), when receiving a packet sent thereto from a mobile terminal that is a sending source, a subscriber packet exchange apparatus encapsulates the packet with a multicast address without acquiring information on a routing area (13) in which another mobile terminal that is a destination is currently located from a home location register (2), and routes the packet to another subscriber packet exchange apparatus that manages the routing area in which the destination mobile terminal is currently located. As a result, the moving object IP packet communication system can carry out the transmission of data packets between the source and destination mobile terminals while reducing the transfer delay. <IMAGE></p> |
