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Modeling the 802.11 distributed coordination function in nonsaturated heterogeneous conditions

Malone, David and Duffy, Ken and Leith, Doug (2007) Modeling the 802.11 distributed coordination function in nonsaturated heterogeneous conditions. IEEE/ACM Transactions on Networking , 15 (1). pp. 159-172. ISSN 1063-6692

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Abstract

Analysis of the 802.11 CSMA/CA mechanism has received considerable attention recently. Bianchi presented an analytic model under a saturated traffic assumption. Bianchi's model is accurate, but typical network conditions are nonsaturated and heterogeneous. We present an extension of his model to a nonsaturated environment. The model's predictions, validated against simulation, accurately capture many interesting features of nonsaturated operation. For example, the model predicts that peak throughput occurs prior to saturation. Our model allows stations to have different traffic arrival rates, enabling us to address the question of fairness between competing flows. Although we use a specific arrival process, it encompasses a wide range of interesting traffic types including, in particular, VoIP.

Item Type: Article
Additional Information: Copyright Notice "©2007 IEEE. Reprinted from IEEE/ACM Transactions on Networking. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE." http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4100720&isnumber=4100704
Keywords: 802.11; CSMA/CA; Heterogeneous network; Nonsaturated traffic; Carrier sense multiple access; Telecommunication traffic; Wireless LAN; 802.11 distributed coordination function; CSMA/CA mechanism; Nonsaturated heterogeneous conditions; Saturated traffic assumption; Traffic arrival rates.
Subjects: Science & Engineering > Hamilton Institute
Science & Engineering > Computer Science
Item ID: 1514
Identification Number: 10.1109/TNET.2006.890136
Depositing User: Dr. David Malone
Date Deposited: 18 Aug 2009 16:23
Journal or Publication Title: IEEE/ACM Transactions on Networking
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Refereed: Yes
URI:

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