| 摘要 |
The present invention provides a new technique, according to which inefficient and redundant routing can be eliminated, which may occur when the fast handover is applied to network mobility and which may cause delay. According to this technique, a mobile router (MR) 210 makes the mobile node grasp the care-of address of the mobile router by performing route optimization to and from the mobile node (MN) 130 connected to the mobile network under its control. When the mobile node performs handover to another access network by fast handover, the mobile router tunnels a packet by using own care-of address as a source address-i.e. the packet, which has been sent from a correspondent node (CN) 140 and which is to be sent to an address before the handover of the mobile node (old care-of address)-and the packet is directly forwarded to the mobile node without passing through the home agent of the mobile router.
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