Method and system for supporting mobility of mobile terminal
First Claim
1. A method of supporting mobility of a mobile node using a mobile Internet protocol, the method comprising:
- recognizing that the mobile node moves into another sub-network from a first sub-network; and
when it is recognized that the mobile node has moved into another sub-network, allocating by said first sub-network a new Internet protocol address to the mobile node, the Internet protocol address having a network prefix identical to that for the sub-network into which the mobile node has moved.
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Abstract
A method and system for supporting mobility of a mobile node in which, when it is recognized that the mobile node has moved into a foreign sub-network, the mobile node is allocated, by its home sub-network, a new Internet protocol address suitable for a prefix of the foreign sub-network after movement when moving out of an area of the home sub-network into the foreign sub-network so that route optimization is implemented. Since direct communication is made between a mobile node and a correspondent node without passing a network where the mobile node existed before movement, it is possible to implement the route optimization. There is no generation of packet overhead since Internet protocol tunneling technology is not applied upon routing.
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Citations
32 Claims
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1. A method of supporting mobility of a mobile node using a mobile Internet protocol, the method comprising:
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recognizing that the mobile node moves into another sub-network from a first sub-network; and
when it is recognized that the mobile node has moved into another sub-network, allocating by said first sub-network a new Internet protocol address to the mobile node, the Internet protocol address having a network prefix identical to that for the sub-network into which the mobile node has moved. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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- 19. A system for supporting mobility of mobile terminals in a system composed of a plurality of mobile terminals, a plurality of access points, and a home network, wherein the access points in the same sub-network are configured to have the same identifiers, and the home network performs call management of an overall system, mobility sensing, initial registration of mobile nodes, statistics, database management, and allocation of a new Internet protocol address to moving mobile terminals.
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20. A system for supporting mobility of mobile terminals in a system composed of a plurality of mobile terminals, a plurality of access points, and a home network, comprising a dynamic host configuration protocol server, the server performing call management of an overall system, mobility sensing, initial registration of mobile nodes, statistics, database management, and allocation of a new Internet protocol address to moving mobile terminals.
Specification