US Patent 7512088 Routing data packets to a mobile node

Routing data packets to a mobile node includes registering a mobile node with a home agent associated with the mobile node. The home agent establishes that the mobile node has moved from a first network to a second network, and determines a foreign access router of the second network, where the mobile node communicates through the foreign access router. A mobility binding table is updated with a binding entry associated with the foreign access router. Data packets destined for the mobile node are forwarded to the mobile node in accordance with the updated mobility binding table.