Patent ID: 7461169
Filing Date: 2008-12-02
Classification: G06F,H04L,H04W

Abstract:
1. In a Home Agent, a method, comprising: receiving a first registration request from a mobile node, the first registration request indicating a request for assignment of a home address; obtaining a DHCP address from a DHCP server for use as the home address; and sending a first registration reply to the mobile node, the first registration reply including the DHCP address that has been obtained from the DHCP server, DHCP server information associated with the DHCP server, and a lease lifetime associated with the DHCP address, wherein the DHCP address is used as a home address of the mobile node when the mobile node is at its home network and when roaming to a foreign network, thereby enabling the mobile node to manage the home address, wherein the first registration reply notifies the mobile node that it is responsible for renewing or extending the lease lifetime associated with the DHCP address; wherein the mobile node is responsible for renewing or extending the lease lifetime associated with the DHCP address by contacting the DHCP server using the DHCP server information.