Performance Investigation of IEEE 802.11e EDCA Based on the M/G/1/K Queue Model

Bai Xiang; Mao Yu-ming

doi:10.3724/SP.J.1146.2006.01926

Volume 30 Issue 7

Jan. 2011

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Bai Xiang, Mao Yu-ming . Performance Investigation of IEEE 802.11e EDCA Based on the M/G/1/K Queue Model[J]. Journal of Electronics & Information Technology, 2008, 30(7): 1610-1614. doi: 10.3724/SP.J.1146.2006.01926

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Bai Xiang, Mao Yu-ming . Performance Investigation of IEEE 802.11e EDCA Based on the M/G/1/K Queue Model[J]. Journal of Electronics & Information Technology, 2008, 30(7): 1610-1614. doi: 10.3724/SP.J.1146.2006.01926

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Performance Investigation of IEEE 802.11e EDCA Based on the M/G/1/K Queue Model

doi: 10.3724/SP.J.1146.2006.01926

Received Date: 2006-12-04
Rev Recd Date: 2007-07-30
Publish Date: 2008-07-19

Abstract

Abstract

A new Markov chain model for the IEEE 802.11e EDCA is presented. The model takes into account both the idle state and differentiation based on different AIFS-value for different traffic. The signal transfer function of the generalized state transition diagram can be used to derive a probability distribution of the MAC layer service time and the performance of EDCA from a non-saturated channel to a saturated medium by using presented M/G/1/K queuing model is analyzed. A good match between the analytical model and simulation which conforms the veracity of proposed model is observed. Simulation shows that despite providing prioritized QoS, the EDCA still can not support strict QoS for real-time application. It is inevitable that there is unfairness of channel access to prioritized traffic due to EDCA.

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References(1)

References

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