揭示基于802.11的无线多跳网络中的TCP不公平行为

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI:10.1109/PIMRC.2001.965267

Shugong Xu, T. Saadawi

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引用次数: 25

摘要

在本文中，我们报告并揭示了基于IEEE 802.11的无线多跳网络中TCP连接之间的不公平问题。这个问题与之前报道的那些不公平问题不同。在我们确定的每一种情况下，一个TCP连接被完全关闭，即使它比竞争的TCP流量更早启动。通过说明TCP层和MAC层的轨迹，我们表明这种不公平问题根源于IEEE 802.11 MAC层。隐藏节点问题和暴露节点问题以及MAC层的指数回退方案是导致该问题的主要原因。

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Revealing TCP unfairness behavior in 802.11 based wireless multi-hop networks

In this paper, we report and reveal an unfairness problem among TCP connections in an IEEE 802.11-based wireless multi-hop network. This problem is not the same as those unfairness problems reported before. In each of the cases we identified, the one TCP connection is completely shut down, even if it starts much earlier than the competing TCP traffic. By illustrating the TCP layer and MAC layer traces, we show that this kind of unfairness problem is rooted in the IEEE 802.11 MAC layer. The hidden node problem and the exposed node problem along with the exponential back-off scheme in the MAC layer are the major causes for that problem.

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12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598)

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