Wireless loss-tolerant congestion control protocol based on dynamic aimd theory
Wireless loss-tolerant congestion control protocol based on dynamic aimd theory
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DOI：
10.1109/mwc.2010.5450655
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发表时间：
2010-04
影响因子：
12.9
通讯作者：
Hiroki Nishiyama;N. Ansari;N. Kato
中科院分区：
文献类型：
--
作者：
Hiroki Nishiyama;N. Ansari;N. Kato
最近，因特网协议的使用已经迅速扩展到因特网之外，例如，下一代网络的建设证明了这一点，通过IP赋予电信网络权力。通过各种网络的融合，一个巨大的IP网络有望在不久的将来出现。然而，传输控制协议，事实上的标准传输层协议，提供可靠的通信在这样的IP网络，提出了几个重要的性能问题。在无线环境中，小缓冲区问题、不公平的带宽分配以及吞吐量下降已经成为TCP通信中的普遍问题。在这篇文章中，我们从窗口控制理论的角度来研究这些问题的原因。TCP采用加增乘减理论作为窗口控制策略，其静态AIMD控制缺乏灵活性是其性能下降的根本原因。在简要回顾了利用各种修改后的AIMD控制方案的TCP增强功能后，我们引入了显式同步TCP，该TCP通过采用来自网络节点的反馈信息采用动态AIMD窗口控制机制。通过根据不同的网络条件动态控制AIMD程序，ESTCP即使在混合有线/无线网络中也能够实现高性能。
Recently, the use of Internet Protocol has rapidly expanded beyond the Internet, as evidenced, for example, by the construction of the next-generation network, empowering telecommunication networks by IP. A huge IP network is expected to emerge in the near future by means of convergence of various networks. However, Transmission Control Protocol, the de facto standard transport layer protocol providing reliable communication over such IP networks, poses several significant performance issues. The small buffer problem, unfair bandwidth allocation, and throughput degradation in wireless environments have been widely known issues in TCP communications. In this article we examine the causes of these problems from the viewpoint of window control theory. While TCP employs additive-increase multiplicative-decrease theory as a window control policy, the lack of flexibility of its static AIMD control is the basic cause for its performance degradation. After briefly reviewing TCP enhancements that utilize various modified AIMD control schemes, we introduce explicitly synchronized TCP, which employs a dynamic AIMD window control mechanism by employing feedback information from network nodes. By dynamically controlling AIMD procedures according to varying network conditions, ESTCP is able to achieve high performance even in hybrid wired/wireless networks.