Patent ID: 7643455
Filing Date: 2010-01-05
Classification: H04L,H04W

Abstract:
1. A method for assigning IP addresses to mobile IP nodes in heterogeneous networks in which a home agent dynamically assigns a temporary IP care-of address to a static IP home address when the mobile node is moved in the heterogeneous networks, the dynamic care-of address indicating the topologically current network location of the mobile node and IP data packets having the IP home address of the mobile node as a destination address being redirected to the care-of address of the mobile node, the method comprising the steps of: checking, using an interface administration module of the mobile node, the mobile node for available physical network interfaces, generating a lookup table with the available and configurable physical network interfaces, linking the interface administration module to one of the available physical network interfaces, accessing with one or more active IP applications the heterogeneous networks via a permanent virtual IP network interface generated in the mobile node, the generated permanent virtual IP network interface being linked to the topologically current network indicated by the dynamic care-of-address via the interface administration module, and updating, during a change of the physical network interface of the mobile node, the link of the permanent virtual IP network interface to the network based on the lookup table without interrupting the one or more active IP applications.