Method for ensuring reliable mobile IP service
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United States of America Patent
Stats
-
Aug 3, 2004
Grant Date -
Jun 6, 2002
app pub date -
Dec 1, 2000
filing date -
Dec 1, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention relates to data communications in packet switched networks and more specifically to the mobility of terminals in networks implementing the Mobile Internet Protocol (MIP). In the method according to the present invention each Home Agent will store locally the load information from other Home Agents and will exchange load information with the other Home Agents. The Mobile Node first attempts to register with its primary Home Agent. This registration is not completed due to e.g. failure of the primary Home Agent or where the network chooses to register with another Home Agent which has a lower load than the primary Home Agent. The Mobile Node then attempts to register with a second, alternate, Home Agent. If the alternate Home Agent accepts the request then the Mobile Node is able to access MIP services through the alternate Home Agent. The present invention provides a method to balance the load using dynamic load balancing and a method to recover from Home Agent failure using software Home Agent redundancy.
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