| 摘要 |
A home agent used in a mobile communications system conforming to Mobile IP is disclosed. A mobile node belongs to the home agent, and the home agent has a global IP address that is a home address common to a plurality of mobile nodes. The home agent includes: an interface unit configured to route a received packet according to a transfer table that includes a correspondence among a home address of the mobile node, a care of address of the mobile node, and a communication session identification number for identifying a communication session opened by an application of the mobile node, wherein a transfer destination of the received packet is identified by a combination of the care of address and the communication session identification number; and a location information management unit configured to manage the transfer table.
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