Inproceedings,
An Evaluation of QoS for intensive video traffic over 802.11e WLANs
Proceedings of the 25th International Conference on Electronics, Communications and Computers (CONIELECOMP'15), page 8-15. Puebla, Mexico, IEEE Computer Society, (February 2015)
DOI: 10.1109/CONIELECOMP.2015.7086933
Abstract
With the continuing development of the wireless
technologies (Wi-Fi, 3G, 4G, WiMax and Bluethooth), the study
of wireless multimedia transmissions has gained lately more
attention. For example, the expectations of the company leaders
on the growth of Wi-Fi video traffic has updated the lines of
research on the standard IEEE 802.11e introduced to provide
QoS (Quality of Service) to WLAN (Wireless LAN ) networks. A
quantitative analysis has been performed by simulation. We use a
node model EDCA (Enhanced Distributed Channel Access)
802.11e with the tool Möbius of the University of Illinois, which
supports an extension of SPN (Stochastic Petri Networks), known
as HSAN (Hierarchical Stochastic Activity Networks). This
formalism favors the comparison of the results with those
obtained from other tools, based mainly on simulation languages,
for Wi-Fi stations with the capacity to transmit voice, video or
best effort traffic in presence of error. This article introduces
novel scenario that varies the load by increasing the number of
active stations from 5 to 45 but maintaining their relative traffic
proportion. The proportion of traffic injected by stations is 65\%
video, 2\% voice, and 33\% best effort. Measured performance
metrics were absolute or direct performance, relative
performance, average delay of queue, and average queue size.
