摘要
由于无线网络中存在高误码、信号衰落、切换等原因,使得传统TCP的应用受到了挑战。本文提出了将专家控制用于无线网络的拥塞控制方案,它通过推理判断,确定当前的TCP连接状况,进而区分网络拥塞和无线链路差错,然后再针对不同的原因,选取正确的控制策略实施拥塞控制。仿真结果表明,该方法增强了网络对拥塞以及随机差错的实时处理能力,提高了网络的吞吐量,算法本身具有较强的顽健性。
The application of TCP over wireless networks is a challenging work due to high bit error rates and fading and handoff. This paper presents a congestion control mechanism for wireless networks based on expert control, which makes sure the state of TCP connection and differentiates between wireless link errors and network congestion in terms of the inference. Wireless link errors as well as congestion in the wired network are separately controlled. The simulation results show that this method can strengthen the congestion and random errors processing capability in real time and improve the throughput of the network, and this control scheme is more robust than normal TCP.
出处
《通信学报》
EI
CSCD
北大核心
2004年第1期164-173,共10页
Journal on Communications
基金
湖南省自然科学基金资助项目(01JJY1007)
关键词
无线网络
拥塞控制
专家控制
TCP
wireless networks
congestion control
expert control
TCP
