A comprehensive analysis of IEEE 802.11 DCF heterogeneous traffic sources

A comprehensive analysis of IEEE 802.11 DCF heterogeneous traffic sources
Publishing date: 
February, 2014
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dr hab. inż.
Ph.D., hab.
+48 12 617 35 38
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Katarzyna Kosek-Szott w roku 2006 obroniła z wyróżnieniem pracę magisterską na wydziale EAIiE Akademii Górniczo-Hutniczej w Krakowie. W roku 2011 obroniła z wyróżnieniem pracę doktorską z dziedziny Telekomunikacja na tym samym wydziale. W roku 2016 uzyskała stopień doktora habilitowanego. Obecnie jest zatrudniona na stanowisku adiunkta w Katedrze Telekomunikacji Akademii Górniczo-Hutniczej w Krakowie. Jej ogólne zainteresowania dotyczą sieci bezprzewodowych, szczególnie najnowszych rozszerzeń standardu IEEE 802.11. Jest recenzentem dla licznych czasopism oraz konferencji międzynarodowych. Była/jest zaangażowana w realizację prac w ramach projektów europejskich:  DAIDALOS II, CONTENT, CARMEN, FLAVIA, PROACTIVE, RESCUE, CANALETTO. Realizowała także prace związane z polskimi grantami. Była kierownikiem projektu finansowanego przez Narodowe Centrum Nauki w ramach programu SONATA. Jest autorką licznych publikacji. Jest członkiem komitetu redakcyjnego czasopisma Ad Hoc Networks wydawnictwa Elsevier.

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Katarzyna Kosek-Szott received her M.Sc. and Ph.D. degrees in telecommunications (both with honours) from the AGH University of Science and Technology, Krakow, Poland in 2006 and 2011, respectively. In 2016 she received habilitation degree. Currently she is working as an assistant professor at the Department of Telecommunications, AGH University of Science and Technology. Her general research interests are focused on wireless networking. The major topics include wireless LANs (especially the newest amendments to the IEEE 802.11 standard).She is a reviewer for international journals and conferences. She has been involved in several European projects: CANALETTO, DAIDALOS II, CONTENT, CARMEN, FLAVIA, PROACTIVE, RESCUE as well as grants supported by the Polish Ministry of Science and Higher Education. She has also co-authored a number of research papers. Since January 2015 she is a member of the editorial board of the Ad Hoc Networks journal published by Elsevier.

Kosek-Szott K.
Publication type: 
Ad Hoc Networks, Elsevier
Among the IEEE 802.11 models proposed in the literature most concentrate solely on homogeneous trac sources (i.e., with the same arrival rate) and there are only a few which concentrate on heterogeneous nonsaturated trac sources. This paper proposes a comprehensive analysis of heterogeneous trac sources (saturated or nonsaturated) with M/M/1/K queues. The mathematical model proposed in this paper allows the calculation of the following parameters: per-station and network throughput, delay (including service time and queuing delay), and frame loss probability (including probability of dropping a frame at the MAC layer and in a transmission queue). Simulation results show the impact of the presence of di erent trac source types on each other and validate the correctness of the proposal for a variable number of stations and under di erent network loads. Importantly, the new model is kept reasonably simple to attract network designers. We provide examples of its practical applicability by performing an estimation of the maximum number of voice calls which can be accepted by a particular network and the optimal bu er size.
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