NDLI: A simple nonsaturated IEEE 802.11e EDCA model

Content Provider	IEEE Xplore Digital Library
Author	Qinglin Zhao Tsang, D.H.K. Sakurai, T.
Copyright Year	2011
Description	Author affiliation: Department of Electronic & Computer, Engineering, Hong Kong University, of Science and Technology, Hong Kong (Tsang, D.H.K.) \|\| Faculty of Information Technology, Macau University of Science and Technology, Macau (Qinglin Zhao) \|\| Department of Electrical and Electronic Engineering, The University, of Melbourne, Australia (Sakurai, T.)
Abstract	We model a nonsaturated IEEE 802.11e EDCA network for a small buffer size. Our model is much simpler and more accurate than others that have appeared in the literature. The model is simple because 1) we invoke the Kumar renewal-reward approach for the saturated collision probability rather than the Bianchi Markov-chain approach, as in previous work, and 2) we approximate the nonsaturated attempt rate by scaling the attempt rate of the saturated setting with the probability of a packet arrival. We verify the accuracy of our model using ns-2 simulation and show that the collision probability obtained in our model is the most accurate amongst related work. The collision probability governs all other performance metrics, such as throughputs and delay characteristics; we show that since prior works do not model the nonsaturated collision probabilities accurately, they fail to correctly capture the delay characteristics. Also, our results indicate that if we accurately model the nonsaturated collision probability, the same formulas used for the saturated performance descriptors can produce accurate results for nonsaturated operation, and therefore is unnecessary to construct specific formulas for nonsaturated performance descriptors, as done in previous work.
Starting Page	135
Ending Page	142
File Size	255362
Page Count	8
File Format	PDF
ISBN	9781457701399
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-27
Publisher Place	Netherlands
Access Restriction	Subscribed
Rights Holder	Society for Modeling & Simu
Subject Keyword	Accuracy nonsaturation IEEE 802.11e Standard IEEE 802.11e Throughput Numerical models Mathematical model Approximation methods EDCA Delay
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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