NDLI: Specification versus reality: Experimental evaluation of link capacity estimation in IEEE 802.11

Content Provider	IEEE Xplore Digital Library
Author	Glass, S. Guerin, J. Peizhao Hu Portmann, M. Wee Lum Tan
Copyright Year	2013
Description	Author affiliation: Nat. ICT Australia, Australia (Glass, S.; Guerin, J.; Peizhao Hu; Portmann, M.; Wee Lum Tan)
Abstract	Many wireless network protocols and algorithms rely on estimations of the link capacity in order to make informed decisions on routing data packets, selection of the optimal transmission rate, flow and admission control. In this paper we present an investigation into our Effective Link Capacity (ELC) metric which combines the use of MAC layer monitoring with knowledge of the network timing specifications to provide an accurate model of link conditions. We subject the resulting metric to an experimental investigation across a range of conditions using a conducted testbed. We demonstrate that commodity wireless devices do not conform to the IEEE 802.11 specification, thus making modeling difficult. Given that ELC and the IEEE 802.11s Airtime link metric are directly related, we compare their accuracy in estimating the link capacity. We demonstrate that ELC significantly outperforms two widely-used implementations of Airtime.
Starting Page	380
Ending Page	385
File Size	390419
Page Count	6
File Format	PDF
ISBN	9781467359382
ISSN	15253511
e-ISBN	9781467359399
e-ISBN	9781467359375
DOI	10.1109/WCNC.2013.6554594
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Throughput IEEE 802.11 Standards Attenuation Wireless networks Timing
Content Type	Text
Resource Type	Article

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