Experimental Tuning of the AIFSN Parameter to Prioritize Voice over Data Transmission in 802.11E WLAN Networks
Miroslaw Narbutt, Mark Davis · 2007
In this paper we experimentally study the impact of one EDCA parameter, namelyAIFSNon 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 impairments using the latest Appendix to the ITU-T E-model. Our experimental results show that the tuning of theAIFSNparameter 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.