Accurate Measurement and Visualization of Traffic Load in IEEE 802.11 WLANs
Master thesis
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http://hdl.handle.net/11250/137041Utgivelsesdato
2008Metadata
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Sammendrag
Wireless Local Area Networks (WLANs) based on the IEEE 802.11 standard are getting very popular
these days, due to their support for new multimedia services and VoIP, and because WLANs are
appearing on more and more small devices. This causes a steadily increasing load and becomes a
challenge to network administrators who want to make their WLANs run efficiently and to keep the
users satisfied.
This Master thesis addresses the lack of efficient and affordable monitoring tools for those running
WLANs, by developing an accurate method and for the visualization of traffic patterns and bandwidth
utilization.
We have developed the Wlan Traffic Visualizer, which, based on captured log files or through live
capture, gives a clear presentation of the traffic patterns and load situation of a WLAN, as well as the
bandwidth utilization and potential extra throughput. We have implemented new methods for accurate
free bandwidth estimation, and through a series of testing activities, our implementation has been
verified in comparison with the standards and other references.
As an additional outcome, the Wlan Traffic Visualizer has proved to be useful for other purposes. Its
detailed presentation of packet sequences and timing can be used for WLAN protocol illustration, as
well as for the observation of WLAN equipment behaviour and for equipment benchmarking
Beskrivelse
Masteroppgave i informasjons- og kommunikasjonsteknologi 2008 – Universitetet i Agder, Grimstad