作　　者： ; ; ; ; ;

机构地区： 中南大学信息科学与工程学院

出　　处： 《小型微型计算机系统》 2008年第12期2213-2217,共5页

摘　　要： 移动IPv6协议是下一代网络中移动节点实现无缝漫游的一种基本技术.但移动IPv6切换时延迟较大,不能满足实时业务的需求.本文提出一种基于预测的移动IPv6动态调整快速切换算法,根据移动节点的运动轨迹和移动速度预测出提前三层切换的正确时机,实现在二层切换之前完成三层切换,减少切换延迟.利用以前的三层切换时间,动态调整时间比较参数T reg,减少预测误差.仿真结果证明本算法在切换延迟和丢包率方面性能优越. Mobile IPv6 is one of the basic techniques for mobile node in Next Generation Network to achieve seamless roaming. But Mobile IPv6 could not meet the needs of real-time applications due to its big handover delay. This paper proposed a Prediction Based Adapting dynamically Fast handover algorithm for MIPv6. It use the trajectory and the sampling speed of mobile node to predicted the right time of L3 handoff, then finish the L3 handoff before L2 handoff, thereby reduce the handover delay. In order to reduce the prediction errors, the previous handover delay information is used to adjust the parameter Treg dynamically. The simulation results prove the good performance of P-ADFMIPv6 in handover delay and packets lost rate.

关 键 词： 移动 预测切换 动态调整

领　　域： [自动化与计算机技术] [自动化与计算机技术]