异构网络环境下的自适应多播  

Adaptive multicast in heterogeneous network environment

作　　者：刘莞[1] 

机构地区：[1]福建工程学院现代教育技术中心,福建福州350108

出　　处：《闽江学院学报》2009年第5期80-83,共4页Journal of Minjiang University

摘　　要：应用层多播越来越广泛应用于Internet,为了解决异构网络环境带来的异构性和传输实时性等许多问题,本文提出一种基于代理的自适应多播AALM系统(Agent-based Application-level Multicast),在局域范围内采用高效率的IP多播传输数据,每个IP多播域中设置一个代理服务器,代理服务器之间的主干网络通过应用层多播进行数据传输.AALM多播系统的模块划分和通信协议表的具体定义,进一步验证了AALM多播系统可以满足不同的应用需求,在异构环境下可以节省了大量网络资源,提高了视频服务质量.The application-level multicast is widely applied in internet and the past IP multicast is limited in network ＂island＂.In order to resolve the problems of heterogeneous network environment,such as network heterogeneity and real-time transmission etc.,this paper proposes an agent-based adaptive multicast system,i.e.,the so-called AALM system（agent-based application-level multicast）.Its basic idea is that AALM uses efficiently data transmission of IP multicast in LAN,one agent server is set in every IP multicast area,the backbone network composed of agents transmits data using application-level multicast.At the same time,AALM provides the module graph of system and the definition of transmission protocol table which demonstrates that AALM system can satisfy every different application requirement,save many network resources and improve the media service quality in heterogeneous environment.

关 键 词：应用层多播 实时传输 网络异构性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]