1. Modern Education Technology and Network Center，Nanyang Normal University，Nanyang Henan 473061，China； 2. Software Institute, Nanyang Normal University, Nanyang Henan 473061, China
Abstract：In the pointer forwarding schemes of Hierarchical Mobile IPv6 (HMIPv6), the influence of the distance between the Access Routers (ARs) on the handover performance has not been taken into consideration. To solve this problem, the optimization of intra-MAP (Mobile Anchor Point) handover in HMIPv6 based on pointer forwarding (OPF-HMIPv6) was proposed. The OPF-HMIPv6 compared the distance between ARs with the distance between AR and MAP firstly and gave priority to registering to MAP, rather than built a pointer chain immediately by registering to AR. The simulation results have shown that OPF-HMIPv6 can decrease the registration cost by 39% compared to HMIPv6 when the distance between AR and MAP is greater than the distance between ARs, which proves that the optimization reduces the overhead caused by the binding update and improves the efficiency of the intra-MAP handover.
2014, Vol. 34 
