Study of enhanced DCF (EDCF) in multimedia application

IEEE 802.11e Medium Access Control (MAC) is an emerging supplement to the IEEE 802.11 Wireless Local Area Network (WLAN) standard to support Quality-of-Service (QOS). The 802.11e MAC is based on both centrally-controlled and contention-based channel accesses. This project is aimed towards evaluating...

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Main Author:	Ismail, Ismahani
Format:	Thesis
Language:	English
Published:	2005
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/5308/1/IsmahaniIsmailMFKE2005.pdf
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spelling	my-utm-ep.53082018-02-28T08:57:11Z Study of enhanced DCF (EDCF) in multimedia application 2005-03 Ismail, Ismahani TK Electrical engineering. Electronics Nuclear engineering IEEE 802.11e Medium Access Control (MAC) is an emerging supplement to the IEEE 802.11 Wireless Local Area Network (WLAN) standard to support Quality-of-Service (QOS). The 802.11e MAC is based on both centrally-controlled and contention-based channel accesses. This project is aimed towards evaluating the contention-based channel access mechanism, called Enhanced Distributed Coordination Function (EDCF), in comparison with the 802.11 legacy MAC, Distributed Coordination Function. Then, by using EDCF model, the acceptable number of streams for traffic type individually and combination of all traffics are determined based on ITU-T requirements. Three different types of traffic are considered namely, voice, video and data. The evaluation was done using ns-2 simulator (version 2.26) running on Linux Fedora Core 2. The metrics used in the evaluation are throughput (Byte), delay (sec) and packet loss (%). Depending on graphs of these three metrics, the performance of EDCF and DCF are evaluated, and also the numbers of stream that fulfil the ITU-T requirements are determined. Through this simulation study, a summary can be made of that EDCF can provide differentiated channel access for different traffic types. Simulation results show that EDCF performs better performance than legacy DCF. Depending on ITU-T requirements especially for delay and packet loss, the acceptable number of streams both for traffic type individually and combination of all traffics type can be determined under EDCF model. 2005-03 Thesis http://eprints.utm.my/id/eprint/5308/ http://eprints.utm.my/id/eprint/5308/1/IsmahaniIsmailMFKE2005.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Ismail, Ismahani Study of enhanced DCF (EDCF) in multimedia application
description	IEEE 802.11e Medium Access Control (MAC) is an emerging supplement to the IEEE 802.11 Wireless Local Area Network (WLAN) standard to support Quality-of-Service (QOS). The 802.11e MAC is based on both centrally-controlled and contention-based channel accesses. This project is aimed towards evaluating the contention-based channel access mechanism, called Enhanced Distributed Coordination Function (EDCF), in comparison with the 802.11 legacy MAC, Distributed Coordination Function. Then, by using EDCF model, the acceptable number of streams for traffic type individually and combination of all traffics are determined based on ITU-T requirements. Three different types of traffic are considered namely, voice, video and data. The evaluation was done using ns-2 simulator (version 2.26) running on Linux Fedora Core 2. The metrics used in the evaluation are throughput (Byte), delay (sec) and packet loss (%). Depending on graphs of these three metrics, the performance of EDCF and DCF are evaluated, and also the numbers of stream that fulfil the ITU-T requirements are determined. Through this simulation study, a summary can be made of that EDCF can provide differentiated channel access for different traffic types. Simulation results show that EDCF performs better performance than legacy DCF. Depending on ITU-T requirements especially for delay and packet loss, the acceptable number of streams both for traffic type individually and combination of all traffics type can be determined under EDCF model.
format	Thesis
qualification_level	Master's degree
author	Ismail, Ismahani
author_facet	Ismail, Ismahani
author_sort	Ismail, Ismahani
title	Study of enhanced DCF (EDCF) in multimedia application
title_short	Study of enhanced DCF (EDCF) in multimedia application
title_full	Study of enhanced DCF (EDCF) in multimedia application
title_fullStr	Study of enhanced DCF (EDCF) in multimedia application
title_full_unstemmed	Study of enhanced DCF (EDCF) in multimedia application
title_sort	study of enhanced dcf (edcf) in multimedia application
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2005
url	http://eprints.utm.my/id/eprint/5308/1/IsmahaniIsmailMFKE2005.pdf
_version_	1747814575882895360

Study of enhanced DCF (EDCF) in multimedia application

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