Modelling 802.11 Wireless Links
Duffy, K. and Malone, D.W. and Leith, D. J. (2005) Modelling 802.11 Wireless Links. Proceedings of the 44th IEEE Conference on Decision and Control, and the European Control Conference 2005 Seville, Spain. CDC-ECC '05. ISBN 0780395670 . pp. 6952-6957.
Analysis of the 802.11 CSMA/CA mechanism has received considerable attention recently. Bianchi  presents an analytic model under a saturated traffic assumption. Bianchi’s model is accurate, but typical network conditions are nonsaturated heterogenous. We present an extension of his model to a non-saturated environment. The model’s predictions, validated against simulation, accurately capture many interesting features of non-saturated operation. For example, the model predicts that peak throughput occurs prior to saturation. Our model also allows stations to have different traffic arrival rates, enabling us to address the question of fairness between competing flows.
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