Extension of hierarchical mobile IPv6 with Bi-casting tunnels over dual wireless network interfaces

Recently, there appear diverse smart phones with dual wireless interfaces such as Wi-Fi and 3G. In this article, we present a novel IP mobility management scheme in which dual wireless network interfaces are assigned active IPv6 Care-of-Addresses and used simultaneously for achieving fast handover without packet loss. In order to do that, the IETF standard HMIPv6 has been extended such that while the mobile node is moving, parallel distribution packet tunnels between an access router and the MN are dynamically constructed using dual interfaces. The detailed architecture and algorithms for the extension of HMIPv6 has been designed and simulation has been done for performance evaluation. The simulation results show that the proposed mechanism demonstrates high efficiency with regard to handover latency, packet loss and throughput.