基于域感知多域分簇拓扑感知应用层组播算法  

Multi-domain clustering topology-aware application layer multicast

作　　者：崔建群[1] 马亮[1] 单志广[2] 黄枫[1] 

机构地区：[1]华中师范大学计算机学院,武汉中国430079 [2]国家信息中心信息化研究部,北京中国100045

出　　处：《华中科技大学学报（自然科学版）》2015年第5期1-5,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61170017;61272112;61370108)

摘　　要：为提高应用层组播生成树的稳定性和效率,提出了一种基于域感知的多域分簇拓扑感知应用层组播算法(Mul-Dom CTA).Mul-Dom CTA算法不仅能够通过链路的传输时延将相近的节点组织在一个拓扑域中,实现数据包的就近传输,而且能够通过节点度约束进行重定向,缓解加入顺序的差异对组播树的不利影响,构建相对稳定的组播树.仿真实验证明Mul-Dom CTA模型具有良好的聚簇能力,能够有效降低组播树深度,同时降低组播树数据包的传输时延.In order to improve the stability and efficiency of the application layer multicast spanning tree,a multi-domain clustering topology-aware application layer multicast algorithm was proposed based on domain perception.Mul-Dom CTA algorithm not only can close organization of nodes in a topology domain through the link transmission delay,so as to realize the transmission of packets,but also can redirect nodes through the node degrees of constraint,alleviating the negative impact of the joining in a different order,building a relatively stable multicast tree.Simulation experiments show that the Mul-Dom CTA model has good clustering ability,which can effectively reduce the depth of the multicast tree,and can effectively reduce the packet transmission delay of the multicast tree.

关 键 词：多域分簇 拓扑感知 稳定性 Mul-Dom CTA模型 就近传输 重定向 聚簇能力 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]