一种基于应用层组播的动态层次模型:DHALM  

A dynamic hierarchical model based on application layer multicast:DHALM

作　　者：李兴盛[1] 白似雪[1] 饶上荣 LI Xingsheng BAI Sixue RAO Shangrong(College of Information Engineering, Nanchang University, Nanchang 330031, China Nanchang Tong Yi Information Technology Co. ,Ltd, Nanchang 330096 ,China)

机构地区：[1]南昌大学信息工程学院,江西南昌330031 [2]南昌通易信息技术有限公司,江西南昌330096

出　　处：《南昌大学学报（理科版）》2017年第2期191-196,共6页Journal of Nanchang University(Natural Science)

基　　金：江西省科技厅重大科技攻关项目项目(20152ACE50021);江西省科技成果重点项目(20151BBI90008);2013年度"洪城计划"人才项目13号

摘　　要：应用层组播(ALM)由于其便于实现和推广等特点,在互联网中得到了广泛应用。提出了一种动态层次应用层组播模型DHALM(Dynamic Hierarchical Application Layer Multicast)。DHALM模型节点加入快,对数据转发过程中出现的异常情况可以快速恢复,能实现高效实时的数据传输;DHALM控制简单,能有效减少控制消耗,支持各种规模的组播。模拟实验结果表明DHALM平均路径长度小、控制开销小、具有较高的数据传输率和较好的鲁棒性。Application layer multicast（ALM） has been widely used in the Internet because it iseasy to implement and promote. This paper proposeda dynamic hierarchical model based on application layer multicast DHALM. It can quickly join nodes,quickly recover from the abnormityin the process of data forwarding, and can realize highefficient real-time data transmission. DHALM can effectively reduce the consumption of control message and support various scale of multicastsinceDHALM is easy to control. Simulation results showed that DHALM has a small average path length, better robustness. low control overhead, high data transfer rate and better robustness.

关 键 词：应用层组播 动态层次 优先级 高效数据传输 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]