Document Type

Conference Paper

Rights

This item is available under a Creative Commons License for non-commercial use only

Disciplines

1.2 COMPUTER AND INFORMATION SCIENCE, Communication engineering and systems, telecommunications

Publication Details

Paper given at the ACM International Conference on Wireless Communciations and Mobile Computing (IWCMC 2007), Hawaii, August, 2007. http://www.cnri.dit.ie/

Abstract

In this paper we experimentally study the impact of one EDCA parameter, namely AIFSN on a mixed voice/data wireless transmission. In particular we investigate how the tuning of this parameter affects both the voice transmission quality and background data throughput. We predict end-to-end voice transmission quality from time varying transmission impairements using the latest Appendix to the ITU-T E-model. Our experiemental results show that the tuning of the AIFSN parameter can successfully prioritize voice transmission over data in a real 802.11e network. To the best of our knowledge this is the first experimental investigation on tuning of MAC layer parameters in a real 802.11e WLAN network and its effect on end-to-end voice transmission quality.

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