基于分支路由器协调的组播流量控制算法

A Multicast Flow Control Scheme Based on Branch Router

为了提高了整个网络的性能,提出了一种基于分支路由器协调的组播流量控制算法,其基本思想是在各分支路由器节点处采用一种新的闭环控制器来对源端的发送速率进行实时调节,使得源端的发送速率趋于稳定;另外,算法还在拥有一定数量接收端的分支路由器处对其发送的数据进行拷贝,一旦在规定时间内收到接收端发来的重传请求信息包,则对该接收端进行数据重发。并还在网络拓扑结构动态变化的情况下进行了仿真试验,仿真结果表明,算法具有良好的可扩展性、稳定性和响应速度。

To improve the capability of whole network ,in this paper, a multicast flow control algorithm based on branch routers＇ coordination is proposed, which employs a new closed loop controller in every branch router to regulate the transmitting rate of senders for stabilization. In addition, those branch routers who possess a certain number of receivers copy the needed data. Once the retransmit - request packets from receivers arrives in given time, the copied data would be sent to those receivers again. Simulations are done in the case of network topologic structure dynamic variation. Experiment results show that the novel algorithm has fairly good expansibility, stability, and response speed.