Patent ID: 7120453

Claim:
A method of operating a mobile host for linking with an Internet protocol (IP) network, comprising: configuring the mobile host for assuming a selected one of an active state and a standby state; informing certain nodes of the network of a change of the host's point of attachment with the network from one base station to another base station when the host is in the active state, wherein the network has paging areas each of which includes one or more base stations; informing the nodes only when a new point of attachment with the network is a base station of a paging area different from a paging area of a last point of attachment with the network, when the host is in the standby state; responding to a page request received from one or more base stations within a current paging area of the host when in the standby state, said request originating at a home agent or a base station acting as a tunneled foreign agent, by transmitting a page response for reception by one of the base stations and transitioning to the active state; developing routing information concerning the mobile host based on the response; and receiving data from one of the base stations that was addressed to the mobile host while the host was in the standby state based on the developed routing information.