Patent ID: 7684794

Claim:
A method for performing a plurality of management operations for a mobile node, comprising: performing an address management operation for a mobile node present in a foreign network, the address management operation comprising: receiving an address request message at a home address server of a home network of the mobile node, the address request message requesting an address for the mobile node; assigning, by the home network, a fixed home address to the mobile node in place of assigning an address that changes with each move, the fixed home address assigned while the mobile node is present in the foreign network; and sending an address acknowledgment message to the mobile node present in the foreign network, the address acknowledgment message communicating the fixed home address; performing a mobility management operation for the mobile node, the mobility management operation comprising: receiving a registration request message requesting registration for the mobile node; and registering the mobile node in response to the registration request message; and performing a next address management operation for the mobile node present in a next foreign network, the next address management operation comprising: receiving a next address request message at the home address server, the next address request message requesting a next address for the mobile node; assigning, by the home network, the same fixed home address to the mobile node in place of assigning another address that changes with each move, the fixed home address assigned while the mobile node is present in the next foreign network; and sending a next address acknowledgment message to the mobile node present in the foreign network, the address acknowledgment message communicating the same fixed home address.