Patent ID: 7710956

Claim:
A mobile communication control system having a plurality of access nodes and a mobile node, comprising: a source access node to which a source mobile terminal is connected via a radio link, the source access node including, an address manager configured to manage a first address, a second address, and a third address of a destination mobile terminal connected to the mobile node via a radio link, the first address of the destination mobile terminal being a home address of the destination mobile terminal, the second address being an address indicating a destination access node allocated to the destination mobile terminal and the third address being an address indicating the mobile node allocated to the destination mobile terminal; an address changer configured to replace a destination address in a header of a packet transmitted from the source mobile terminal without increasing the size of the header, the first address of the destination mobile terminal replaced by the second address of the destination mobile terminal; and a router configured to route the packet to the destination access node to which the mobile node is connected via a radio link, in accordance with the changed destination address; the destination access node including, an address manager configured to manage the second address and the third address of the destination mobile terminal; an address changer configured to replace the destination address in the header of the received packet, the second address of the destination mobile terminal replaced by the third address of the destination mobile terminal without increasing the size of the header; and a router configured to route the packet to the mobile node in accordance with the changed destination address; and the mobile node including, an address manager configured to manage the first address and the third address of the destination mobile terminal; an address changer configured to replace the destination address in the header of the received packet, the third address of the destination mobile terminal replaced by the first address of the destination mobile terminal without increasing the size of the header; and a packet transmitter configured to transmit the packet to the destination mobile terminal in accordance with the changed destination address.