Quality of service in 802.11 networks: modeling and experimental evaluation

Authors:
F. Babich;M. Comisso;M. D'Orlando;A. Dorni
Affiliations:
Dipartimento di Elettrotecnica, Elettronica ed Informatica, University of Trieste, Trieste, Italy;Dipartimento di Elettrotecnica, Elettronica ed Informatica, University of Trieste, Trieste, Italy;Dipartimento di Elettrotecnica, Elettronica ed Informatica, University of Trieste, Trieste, Italy;Dipartimento di Elettrotecnica, Elettronica ed Informatica, University of Trieste, Trieste, Italy
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

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Abstract

This paper compares the theoretical and the experimental throughput of an 802.11 adhoc network implementing Quality of Service (QoS) mechanisms. The theoretical model provides the throughput of each Access Category (AC) of each node in saturated and non-saturated traffic conditions. The experimental setup is described in detail to enable the reproduction of the presented measurements. This setup adopts the widely used Multiband Atheros Driver forWireless Fidelity (MADWiFi), which, however, provides the QoS option for centralized operations only. Hence, this study describes the adjustments to the MADWiFi source code that guarantee the control of the QoS parameters in adhoc mode.