用马尔可夫模型评价TCP TS-Prio协议

Lincoln Herbert Teixeira, E. Wille, W. Godoy
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引用次数: 0

摘要

终端用户在访问通信服务时感知到的服务质量(QoS)主要是由传输层协议(如TCP)驱动的。最近提出了一种考虑数据传输优先级,通过适当修改滑动窗口大小来实现服务区分的协议,称为TCP TS-Prio (Transient & Static priority)协议。在本文中,我们提出了一种可用于估计关键性能参数的方法,如丢包、排队延迟、窗口大小和吞吐量。我们的方法使用马尔可夫链对单个TCP TS-Prio源进行建模。然后分析了多个TCP源的叠加和交互,并进行了服务区分。分析表明,TCP TS-Prio能够根据网络拥塞情况提供不同的服务。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of the TCP TS-Prio protocol using Markovian models
The quality of service (QoS) perceived by end users in their access to communication services is mainly driven by transport level protocols, like TCP. Recently a protocol that implements service differentiation by appropriate modification of the sliding window size considering the data transfer priority, called TCP TS-Prio (Transient & Static Priority) protocol, was proposed. In this paper, we propose a methodology that can be used to estimate key performance parameters, such as packet loss, queueing delays, window sizes, and throughputs. Our approach models a single TCP TS-Prio source using a Markovian chain. The superposition and interaction of several TCP sources, with service differentiation, is then analyzed. The analysis shows that TCP TS-Prio is able to offer service differentiation depending on the network congestion.
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