Patent ID: 7804826

Claim:
A packet-based wireless communication system for communicating with a mobile node, comprising: a virtual private network located on a home network having a security gateway and a home agent associated with the virtual private network located on said home network, wherein said mobile node is associated with and connected to a foreign network, said foreign network connected to said home network, and information packets are transmitted to the mobile node from the virtual private network, and wherein said security gateway on the virtual private network is connected to said home agent, said security gateway having an inner tunnel address for routing packets within the virtual private network on the home network; and a correspondence node located on the virtual private network on the home network and coupled to said home agent on the virtual private network, wherein an information packet transmitted from the correspondence node is encapsulated by the home agent on the home network, said encapsulated information packet is transmitted to the security gateway using the inner tunnel address and said security gateway transmits the encapsulated information packet to the mobile node.