IEEE 802.11无线网络中使用非对称载波感知的自私行为研究

2008 33rd IEEE Conference on Local Computer Networks (LCN) Pub Date : 2008-10-31 DOI:10.1109/LCN.2008.4664222

Eunho Yang, Jaehyuk Choi, Sunglim Lee

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引用次数: 4

摘要

IEEE 802.11利用载波感知机制，有效地支持多用户，减少冲突。但是，如果存在隐藏节点，则IEEE 802.11节点会连续发生冲突，吞吐量极低。由于非合作属性的性质，每个802.11节点都试图最大化自己的吞吐量，而不考虑整体网络性能。在本文中，我们展示了在某些情况下，802.11节点可以通过有意减少其载波感知范围来实现更高的吞吐量。仿真结果还表明，在博弈论模型中，调整载波感知阈值可能会导致网络总体性能出现不理想的纳什均衡。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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On selfish behavior using asymmetric carrier sensing in IEEE 802.11 wireless networks

The IEEE 802.11 utilizes carrier sensing mechanism to support multiple users effectively with small number of collisions. However, if there are hidden nodes, IEEE 802.11 nodes suffer from consecutive collisions and experience extremely low throughput. Due to the nature of non-cooperative property, every 802.11 node tries to maximize its own throughput irrespective of total network performance. In this paper, we show that 802.11 node can achieve higher throughput by intentionally reducing its carrier sensing range in some cases. Based on simulations, we also show that adjusting carrier sense threshold may bring about undesirable Nash equilibrium in terms of total network performance in game-theoretical model.

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2008 33rd IEEE Conference on Local Computer Networks (LCN)

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