Fast Handover in Hierarchical Mobile IPv6 Based on Motion Pattern Detection of Mobile Node

摘要

To meet the increasing communication requirement for people in ubiquitous environments, some handover schemes and improvements were proposed by the IETF in order to support mobility effectively. FHMIPv6 combines the advantages of FMIPv6 and HMIPv6. This paper proposes an improved scheme based on FHMIPv6 which mainly implements a combined-detection function between Mobile Node (MN) and Mobility Anchor Point (MAP) and calculates the Normalized Edit Distance to analyze the motion trail and estimate the motion pattern of MN. According to the estimating result, MAP determines the way MN attaches to the new access point so as to reuse some previous handover information and intellectualize the handover process to avoid redundant binding updating. Simulation results based on Network Simulation 2 (NS2) show that this improved scheme can reduce the packet’s loss rate and handover latency, enhance the throughput and improve the network performance as a whole, especially for MN with the Ping-Pong motion pattern.