A method to improve adaptability of the minstrel MAC rate control algorithm

Authors:
Wei Yin;Peizhao Hu;Jadwiga Indulska;Konstanty Bialkowski
Affiliations:
The University of Queensland, School of Information Technology and Electrical Engineering and National ICT Australia;National ICT Australia;The University of Queensland, School of Information Technology and Electrical Engineering and National ICT Australia;The University of Queensland, School of Information Technology and Electrical Engineering and National ICT Australia
Venue:
UIC'10 Proceedings of the 7th international conference on Ubiquitous intelligence and computing
Year:
2010

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Abstract

The MAC (Media Access Control) layer protocol in wireless networks dynamically changes its transmission rate to adapt transmission to channel conditions. Such dynamic adaptations can improve perhop performance in wireless networks and therefore increase the network throughput. One of the best and commonly used rate control algorithms is Minstrel implemented in the MadWifi driver in Linux. In this paper we present a comprehensive evaluation of the Minstrel rate control adaptation. We show that network throughput could be further improved if the freshness level of throughput measurements currently used in Minstrel was dynamically adapted to channel conditions. This evaluation of the impact of measurement freshness on transmission rate adaptation was carried out in our platform for controllable and repeatable experiments.