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US 6,771,623 B2Granted
Method for ensuring reliable mobile IP service
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorBobby That Dao Ton
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AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorBobby That Dao Ton
Estimating the term…
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.
A method for providing Mobile Internet Protocol (“MIP”) mobility service for a Mobile Node (“MN”) in a packet switched network comprising a plurality of Home Agents (“HA”) and at least one Foreign Agent (“FA”), the MN, the FA, and each HA having an IP address, the method being characterized by:
A packet switched network for implementing a Mobile Internet Protocol (“MIP”) mobility service having a Mobile Node (“MN”), a plurality of Home Agents (“HA”) and at least one Foreign Agent (“FA”), the MN, the FA, and each HA having an IP address, the network comprising:
Dependencies are inferred from the claim text.