Research Article
Understanding 802.11e Voice Behaviour via Testbed Measurements and Modeling
@INPROCEEDINGS{10.1109/WIOPT.2007.4480108, author={ Ian Dangerfield and David Malone and Douglas J. Leith}, title={Understanding 802.11e Voice Behaviour via Testbed Measurements and Modeling}, proceedings={1st International ICST Workshop On Wireless Network Measurement}, publisher={IEEE}, proceedings_a={WINMEE/WITMEMO}, year={2008}, month={3}, keywords={802.11e CSMA/CA buffering measurement test-bed voice}, doi={10.1109/WIOPT.2007.4480108} }- Ian Dangerfield
David Malone
Douglas J. Leith
Year: 2008
Understanding 802.11e Voice Behaviour via Testbed Measurements and Modeling
WINMEE/WITMEMO
IEEE
DOI: 10.1109/WIOPT.2007.4480108
Abstract
Analytic modeling and simulation of 802.11 and 802.11e have flagged up a number of potential performance problems with voice in an infrastructure mode network. This body of work has also predicted a number of possible solutions, such as the use of TXOP. In this paper we reproduce a number of these problems in a 802.11 testbed, and demonstrate that analytic models usefully bound performance. We study the impact of buffer size, which is difficult to fully capture in analytic models. We observe an asymmetry in buffer requirements between stations and the access point and explore how buffering and the use of TXOP impact throughput and delay of voice.
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