【摘要】 目前 Internet采用的是 TCP基于窗口的端到端的拥塞控制机制 ,但是端系统对拥塞的响应速度较慢 ,而且路由器在指示和控制拥塞方面不提供任何显式支持 .基于上述考虑 ,本文提出了一种基于路由器的拥塞控制算法 FECN,该算法在路由器处提供对拥塞的早期检测和指示机制 ,使源端具备快速响应拥塞的能力 ,同时通过自适应调整最大丢弃概率提高对网络状况的动态适应性 ,仿真实验表明 ,与 RED/ECN算法相比 ,该算法降低了数据包的传输延迟 ,有效地提高了链路利用率 ,克服了现有算法的缺陷更多还原

【Abstract】 The end to end congestion control mechanisms of TCP have been a critical factor in the robustness of todays Internet. However, the end hosts respond slowly to congestion, while the routers provide no support in notifying and controlling congestion. This paper proposes a router based congestion control algorithm FECN, in which routers provide explicit detection and notification mechanisms, so that the end could respond to congestion rapidly. It could also improve the adaptabilities of connections to network variation by adjusting the maximum drop probability. The simulation results show that it reduces the transmission delay than ECN algorithm, and works well under most circumstances.更多还原