TCP拥塞控制建模分析方法

A Novel Modeling Method forTCP Congestion Control

随着互联网技术的迅猛发展,传输控制协议(TCP)传输面临越来越严重的拥塞问题。为了更深入了解拥塞现象发生的原因,设计有效的拥塞控制机制,基于着色Petri网性能评价理论,论述了TCP传输控制建模分析的方法,分析了拥塞发生中拥塞窗口和缓存队列的变化过程。在分析结果的基础上,提出了在设计拥塞机制时应综合考虑窗口大小和缓存大小,在控制发送速率的基础上,达到较好的带宽利用率。

The Interact has experienced explosive growth in the past few years, but is followed by increasingly serious congestion problems. To understand the cause of the congestion problem and design valid congestion control strategies, the Colored Petri Nets has been introduced to simulate the TCP transmission control, which presents the changing process of the window size and buffer size during the congestion. Based on the result a valid design principle which considers the window size and buffer size together has been proposed to get a good tradeoff between transmission rate and bandwidth utilization.