一种基于 MN 移动轨迹预测的 MAP 选择算法-《计算机技术与发展》

文章信息/Info

作者:: 何志林¹; 王春红¹; 李向丽²; 1. 运城学院数学与信息技术学院,山西运城 044000; 2. 郑州大学信息工程学院,河南郑州 450001

Author(s):: HE Zhi-lin¹ ; WANG Chun-hong¹; LI Xiang-li²; 1. School of Mathematics and Information Technology,Yuncheng University,Yuncheng 044000,China; 2. School of Information Engineering,Zhengzhou University,Zhengzhou 450001,China

Keywords:: mobile anchor point; mobile trace prediction; hierarchical mobile IPv6; handover latency; packet loss rate

摘要:: 移动 IPv6 是未来 IP 网络进行移动管理的关键技术,而移动锚点(MAP)选取算法对层次移动 IPv6 的性能有着重要影响。通过研究移动节点 MN 的移动特征在时间和空间上的相关性及连贯性,以此为基础提出了通过 MN 移动产生的轨迹来进行判定的一类 MAP 的选择算法。该算法综合考虑了 MN 的移动特征、移动速度及网络拓扑结构等因素,通过对 MN 移动轨迹进行预测来选取适当的 MAP。实验使用 NS2 作为仿真平台,主要从负载分担、切换时延及丢包率三个方面对最大距离矢量(F-MAP)和基于轨迹预测(PT-MAP)两种 MAP 选择方案进行了性能分析比较。仿真结果表明,该算法能够有效地改善网络资源的使用情况,提升不同层次的 MAP 的利用效率并降低其负荷,从而降低切换的延迟情况以及丢包情况,改善 MNIPv6 的综合能力。该算法可更好地满足实际应用的需求。

Abstract:: Mobile IPv6 is the key technology for mobile management of IP network in the future,and mobile anchor point(MAP) selection algorithm has an important impact on the performance of hierarchical mobile IPv6. By studying the correlation and coherence of mobile node MN moving features in time and space,a MAP selection algorithm based on MN mobile trajectory prediction is proposed. The algorithm comprehensively takes into account MN’s moving characteristics,moving speed,network topology and other factors,and selects appropriate MAP by predicting MN’s moving trajectory. In the experiment,NS2 is used as the simulation platform to conduct performance analysis and comparison of the two MAP selection schemes,namely,maximum distance vector (F-MAP) and trajectory prediction based (PT-MAP),mainly from the aspects of load sharing, handover latency and packet loss rate. The simulation shows that the algorithm improves the utilization of network resources,makes the MAP of each layer reasonably utilized,and realizes the sharing of MAP load,thus reducing the handover latency and packet loss,and improving the integral performance of the HMIPv6. This algorithm can better meet the requirements of the practical application.