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http://dx.doi.org/10.6109/JKIICE.2009.13.2.261

Effective Performance Evaluation of IEEE 802.11 WLAN DCF Under Normal Conditions  

Lee, Kye-Sang (동의대학교 공과대학 정보통신공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.13, no.2, 2009 , pp. 261-266 More about this Journal
Abstract
We analyze the performances of the DCF, which is the medium access control protocol of IEEE 802.11 WLAN, assuming normal traffic condition. There have been much less research efforts under the normal condition than those under the saturated one. This paper proposes an analytical method of approximating the transmission attempt rate under normal condition as proportional to that under saturated condition. In result, we show that we can obtain the transmission attempt rate and the packet collision probability which quickly converge using iterative computations of relatively simple equations, and using these results we derive the network throughput and medium access delay. Numerical results show that our method is much less complex than those based on the Markov Chain while it can predict the performances quite accurately.
Keywords
IEEE 802.11 MAC Access Control; DCF;
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