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Measuring Transmission Opportunities in 802.11 Links

Giustiniano, Domenico and Malone, David and Leith, Douglas J. and Papagiannaki, Konstantina (2010) Measuring Transmission Opportunities in 802.11 Links. IEEE/ACM Transactions on Networking, 18 (5). pp. 1516-1529. ISSN 1063-6692

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Abstract

We propose a powerful MAC/PHY cross-layer approach to measuring IEEE 802.11 transmission opportunities in WLAN networks on a per-link basis. Our estimator can operate at a single station and it is able to: 1) classify losses caused by noise, collisions, and hidden nodes; and 2) distinguish between these losses and the unfairness caused by both exposed nodes and channel capture. Our estimator provides quantitative measures of the different causes of lost transmission opportunities, requiring only local measures at the 802.11 transmitter and no modification to the 802.11 protocol or in other stations. Our approach is suited to implementation on commodity hardware, and we demonstrate our prototype implementation via experimental assessments. We finally show how our estimator can help the WLAN station to improve its local performance.

Item Type: Article
Keywords: 802.11; channel measurement; carrier-sense multiple access with collision avoidance; CSMA/CA;
Subjects: Science & Engineering > Hamilton Institute
Item ID: 2210
Depositing User: Professsor Douglas Leith
Date Deposited: 19 Oct 2010 16:00
Journal or Publication Title: IEEE/ACM Transactions on Networking
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Refereed: Yes
URI:

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