Patent ID: 7715340
Filing Date: 2010-05-11
Classification: H04L,H04W

Abstract:
1. A method for enabling mobility of a mobile node in a communication network, comprising: pre-provisioning a first virtual private network (VPN) tunnel between a network server that performs address maintenance and translation and a first access point (AP); pre-provisioning a second VPN tunnel between said network server and a home access point; receiving a registration message from said first AP, where said registration message indicates that the mobile node is present in an area serviced by said first access point; determining by a network server whether the mobile node is present within an area serviced by a home access point of the mobile node; and routing by said network server at least one packet to the mobile node via said first VPN tunnel to said first access point if it is determined that the mobile node is present within said first access point, or routing by said network server at least one packet to the mobile node via said second VPN tunnel to said home access point if it is determined that the mobile node is present within said home access point, wherein said first VPN tunnel is a different VPN tunnel from said second VPN tunnel, wherein the mobile node maintains a same internet protocol (IP) address for communicating with said communication network regardless of whether the mobile node is present within said area serviced by said first access point or said area serviced by said home access point.