Research On Fast-handoff And Network Mobility Key Technologies Of IPv6 Network

With the rapid development of internet technology and mobile communication, the real-time applications of IPv6 are used more and more widely. And at the same time, the moving speed of mobile node is becoming higher. How to decrease the handoff delay and the packet loss, eventually realize seamless handoff have became a hotspot in IPv6 research area. Meanwhile, the speed of train has increased, and many new freeways have been built up. It is getting more and more important to support the high-speed passengers to achieve mobile communication using existing communication equipments.During handoff, the communication will be interrupted and the QoS will descend. So the performance of handoff protocol is very important to MIPv6. First, this paper introduces the performances of three handoff management model: MIPv6, HMIPv6 and F-MIPv6; then it analyses the relation between the accuracy of handoff prediction and the handover performance. On the basis of the HMIPv6 protocol, a seamless handoff mechanism is proposed by combining the handoff prediction and the packet proxy forward technology. The result shows that, the proposed mechanism reduces the handoff delay and the packet loss ratio both in micro-mobility and macro-mobility environments.Network Mobility Basic Support Protocol treats the mobile subnet as a whole. It can not only keep the continuity of communication, but also make the mobile transparent to nodes inside the Mobile Network. At the last part, Network Mobility Basic Support Protocol is analyzed, and a novel route optimization mechanism in nested mobile network is proposed. The result indicates that the performance of the route optimization mechanism is better in delay and internet resource utilization.