摘要
提出一种基于节点相对移动性的自适应按需组播路由协议RMNAM。RMNAM协议继承了ADMR协议的按需特性,并引入了节点相对移动性的概念。一方面,协议使用节点相对移动性作为组播转发树路径选择的重要依据,以提高组播转发树的健壮性;另一方面,协议将接收节点执行全局修复的频率与组播树各路径平均节点相对移动性信息相结合,对源节点的传输方式切换策略进行优化,使其具有更好的适应性。仿真实验结果表明,RMNAM在分组递交率和传输时延方面较ADMR有所改进,同时在有效性和扩展性方面保持了对ODMRP的优势。
This paper presented a kind of relative mobility of nodes based adaptive demand-driven multicast routing protocol RMNAM.RMNAM protocol inherits the on-demand features of ADMR protocol,and introduces the concept of relative mobility of nodes.On the one hand,the protocol uses the relative mobility of nodes as an important factor in multicast forwarding tree,which improves the robustness of the multicast paths;on the other hand,the protocol optimizes the transmission switching strategy of source node by consulting the global repair frequency and the average relative mobility of nodes to promote adaptability.The simulation results show that RMNAM protocols improve ADMR protocol in the packet delivery ratio and transmission delay,and it keeps the advantages of effectiveness and scalability compared with ODMRP.
出处
《计算机科学》
CSCD
北大核心
2012年第9期94-96,100,共4页
Computer Science
