TCP友好组播拥塞控制策略探讨  

TCP-Friendly Multicast Congestion Control Method

作　　者：代丽娴[1] 周胜源[2] 

机构地区：[1]广西大学梧州分校计算机科学与技术系,广西梧州543002 [2]桂林电子工业学院通信与信息工程系,广西桂林541004

出　　处：《桂林电子工业学院学报》2005年第6期27-30,共4页Journal of Guilin Institute of Electronic Technology

基　　金：广西区青年基金资助项目(0339036)

摘　　要：针对单一速率的MTCP协议无法解决组播内部的速率公平问题而带来网络资源的浪费,在分 析组播拥塞控制的相关的算法及典型的机制的基础上,给出了一种新的基于多逻辑树的MTCP协议的 改进方法。经改进后的MTCP协议,按接收者的延迟带宽的乘积的大小分类,将只适合于单速率的组播 拥塞控制改为多速率的组播拥塞控制。仿真实验表明,该方法充分利用了各节点的网络资源,解决了组 播网络的异构性问题,具有良好的公平性及很高的带宽利用率。Congestion is a problem common in correspondence through the Internet, which entails a safe and reliable Quality of Service in encountering this problem. This paper first looks at the main tasks in terms of congestion control for multicast and then discusses various solutions to the potential problems. An analysis into the arithmetic and protocol for multicast congestion control will be presented as well. The inability of singular speed of MTCP protocol in solving the fair speed problem within multicast is a waste of network resource, which makes necessary a new based multi-logic tree of MTCP protocol-based AIMD. The size of the product of RTT and bandwidth makes it explicit that this improved arithmetic makes an ideal alternative for multi-speed multicast congestion control. Through the use of ns-2 and measurement analysis, this approach is TCP-friendly and efficient in using bandwidth, which implies a better use of network resource and an ideal solution to the problem of the different construct in multicast network.

关 键 词：拥塞控制 组播 逻辑树 分层 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]