基于切换频率的分层可靠移动IP组播研究*

从以切换频率区分移动节点类别的角度,提出了一种新的可靠移动IP组播方案,目的是让不同类别的移动节点都能得到相应的、接近最佳的可靠组播服务.与现有的可靠移动IP组播协议相比,提出了基于移动节点的切换频率对移动节点进行分类的概念;提出了对不同类别的移动节点分别使用相应的可靠移动IP组播协议的思想;根据上述思想改进了RRBMoM协议,得到了新协议--ARRBMoM协议.在此基础上,利用OPNET分别模拟ARRBMoM和RRBMoM协议的运行情况,对其性能进行了分析和比较.仿真结果表明了ARRBMoM协议在多种速度类别的移动节点同时存在时,以及移动节点运动速度较快时,比RRBMoM协议在组播树重构、端到端延时、重传率、丢失率等方面具有更好的性能.

Research on hierarchy reliable MIP multicast based on handoff frequency

This paper proposed a new scheme of reliable mobile IP multicast, which classified the mobile node based on handoff frequency. The scheme aimed to offer suitable and quasi optimized service to every class of mobile node. Our contributions were:Introduced a concept of classifying mobile node based on handoff frequency;Proposed the approach of adopting different protocols for different class of mobile node;Based on the above,proposed a new ARRBMoM protocol.Used OPNET as the platform to simulate the protocols of ARRBMoM and RRBMoM. The simulation results accord with the math analysis, and show ARRBMoM outperform RRBMoM on re construction, end to end delay, re transmission and loss.