Experimental validation of analytical performance models for IEEE 802.11 networks

Authors:
Shrirang Mare;David Kotz;Anurag Kumar
Affiliations:
Computer Science Dartmouth College, Hanover, NH;Computer Science/ ISTS, Dartmouth College, Hanover, NH;ECE Department, Indian Institute of Science, Bangalore, India
Venue:
COMSNETS'10 Proceedings of the 2nd international conference on COMmunication systems and NETworks
Year:
2010

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Abstract

We consider the simplest IEEE 802.11 WLAN networks for which analytical models are available and seek to provide an experimental validation of these models. Our experiments include the following cases: (i) two nodes with saturated queues, sending fixed-length UDP packets to each other, and (ii) a TCP-controlled transfer between two nodes. Our experiments are based entirely on Aruba AP-70 access points operating under Linux. We report our observations on certain non-standard behavior of the devices. In cases where the devices adhere to the standards, we find that the results from the analytical models estimate the experimental data with a mean error of 3-5%.