主动网络中的分层组播拥塞控制策略

A Congestion Control for Layered Multicast Using Active Network

为了满足在网络异构情况下根据不同客户端的网络状况保证Qos的组播需求,文章研究了在主动网络中的分层组播的方法,提出了根据主动包进行粗粒度的层加入和根据统计网络拥塞标志信息进行细粒度的离开的拥塞处理的组播实现策略。仿真结果表明,该策略能对网络环境的变化进行多点传输的分层的做出动态适应性调节,同时在网络中实现了与TCP的友好。该算法可以满足多媒体组播在网络异构情况下的拥塞处理。

In order to provide the Qos for different client in the heterogeneous network ,we study the congestion control for layered muhicast using active network. This paper proposes a coarse-grained policy for joining layer and a finegrained policy for leaving layer on congestion. The ns 2 simulation show that the policy can not only adjust it＇ layers according real network condition but also get TCP-friendliness. This arithmetic can satisfy the demand of congestion controlling for muhicast.