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Erschienen in: Wireless Networks 1/2012

01.01.2012

Increasing throughput in dense 802.11 networks by automatic rate adaptation improvement

verfasst von: Kleber V. Cardoso, José F. de Rezende

Erschienen in: Wireless Networks | Ausgabe 1/2012

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Abstract

Rate control algorithms for commercial 802.11 devices strongly rely on packet losses for their adaptation. As a result, they give poor performance in dense networks because they are not able to distinguish packet losses related to channel error from packet losses due to collision. In this paper, we evaluate automatic rate adaptation algorithms in IEEE 802.11 dense networks. A certain number of works in the literature address this problem, but they demand modifications of the IEEE standard, or depend on some special feature not available in off-the-shelf devices. In this context, we propose a new automatic rate control algorithm which is simple, easy to implement, standards-compliant, and well-suited for crowded 802.11 networks. Our approach consists of measuring the contention level, inferring the collision probability, and choosing transmission rates which maximize throughput. Results from simulation and real experiments show throughput improvement of up to 100% from our mechanism.

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Fußnoten
1
Unpublished algorithms are trade secrets.
 
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Metadaten
Titel
Increasing throughput in dense 802.11 networks by automatic rate adaptation improvement
verfasst von
Kleber V. Cardoso
José F. de Rezende
Publikationsdatum
01.01.2012
Verlag
Springer US
Erschienen in
Wireless Networks / Ausgabe 1/2012
Print ISSN: 1022-0038
Elektronische ISSN: 1572-8196
DOI
https://doi.org/10.1007/s11276-011-0389-9

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