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CLC number: TN92

On-line Access: 2009-08-27

Received: 2009-03-26

Revision Accepted: 2009-07-27

Crosschecked: 2009-07-30

Cited: 2

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.10 P.1383~1388

http://doi.org/10.1631/jzus.A0920170


Finite time-horizon Markov model for IEEE 802.11e


Author(s):  Cheng KUAN, Kaharudin DIMYATI

Affiliation(s):  Department of Electrical and Electronic Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia

Corresponding email(s):   cy@royal.net

Key Words:  Wireless local area networks (WLANs), Markov, IEEE 802.11, Transient analysis


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Cheng KUAN, Kaharudin DIMYATI. Finite time-horizon Markov model for IEEE 802.11e[J]. Journal of Zhejiang University Science A, 2009, 10(10): 1383~1388.

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Abstract: 
We model wireless local area network channel utilization over a finite interval through a finite time-horizon markov (FTHM) model. By accurately capturing time-varying utilization, the FTHM model allows for generally distributed transmission-opportunity (TXOP) duration, which most existing models do not account for. An absorbing state is introduced to limit the lifetime of the counting process, resulting in a non-ergodic markov chain that is solved via transient analysis. The model predictions for time-varying utilization are validated by simulation with errors of no more than 0.1% after eight beacon intervals. Moreover, we show that the FTHM model prediction error is below 4% for Poisson distributed and uniformly distributed TXOP durations.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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