Performance evaluation of an adaptive backoff scheme for WLAN: Research Articles

Authors:
Qixiang Pang;Soung C. Liew;Jack Y. B. Lee;Victor C. M. Leung
Affiliations:
Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong and Department of Electrical and Computer Engineering, The University of British Columbia, B.C., Canada;Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong;Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong;Department of Electrical and Computer Engineering, The University of British Columbia, B.C., Canada
Venue:
Wireless Communications & Mobile Computing - Special Issue: Emerging WLAN Apllications and Technologies
Year:
2004

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Abstract

In this paper, a simple self-adaptive contention window adjustment algorithm for 802.11 wireless local area networks (WLAN) is proposed and analyzed. Numerical results show that the new algorithm outperforms the standard 802.11 window adjustment algorithm. Compared with the standard and previously proposed enhancement algorithms, a salient feature of our algorithm is that it performs well in both heavy and light contention cases regardless of the packet sizes and physical versions. Moreover, the adaptive window adjustment algorithm is simpler than previously proposed schemes in that no live measurement of the WLAN traffic activity is needed. Copyright © 2004 John Wiley & Sons, Ltd.