NDLI: Adaptive EDCF: enhanced service differentiation for IEEE 802.11 wireless ad-hoc networks

Content Provider	IEEE Xplore Digital Library
Author	Romdhani, L. Qiang Ni Turletti, T.
Copyright Year	2003
Description	Author affiliation: INRIA, France (Romdhani, L.; Qiang Ni; Turletti, T.)
Abstract	This paper describes an adaptive service differentiation scheme for QoS enhancement in IEEE 802.11 wireless ad-hoc networks. Our approach, called adaptive enhanced distributed coordination function (AEDCF), is derived from the new EDCF introduced in the upcoming IEEE 802.11e standard. Our scheme aims to share the transmission channel efficiently. Relative priorities are provisioned by adjusting the size of the contention window (CW) of each traffic class taking into account both applications requirements and network conditions. We evaluate through simulations the performance of AEDCF and compare it with the EDCF scheme proposed in the 802.11e. Results show that AEDCF outperforms the basic EDCF, especially at high traffic load conditions. Indeed, our scheme increases the medium utilization ratio and reduces for more than 50% the collision rate. While achieving delay differentiation, the overall goodput obtained is up to 25% higher than EDCF. Moreover, the complexity of AEDCF remains similar to the EDCF scheme, enabling the design of cheap implementations.
Starting Page	1373
Ending Page	1378
File Size	398487
Page Count	6
File Format	PDF
ISBN	0780377001
ISSN	15253511
DOI	10.1109/WCNC.2003.1200574
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ad hoc networks Delay Quality of service Traffic control Telecommunication traffic Wireless LAN Access control Jitter Road accidents Wireless networks
Content Type	Text
Resource Type	Article

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