On improving performance for IEEE 802.11 wireless lans under congested and error-prone environments

Authors:
P. Chatzimisios;V. Vitsas;A. C. Boucouvalas
Affiliations:
Department of Informatics, Technological Educational Institution, Thessaloniki, Greece;Department of Informatics, Technological Educational Institution, Thessaloniki, Greece;Multimedia Communications Research Group, School of Design, Engineering and Computing, Bournemouth University, Fern Barrow, Poole, UK
Venue:
IMSA'06 Proceedings of the 24th IASTED international conference on Internet and multimedia systems and applications
Year:
2006

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Abstract

IEEE 802.11 is worldwide implemented and the most widely deployed protocol for Wireless Local Area Networks (WLANs). This paper proposes a simple and effective contention window-resetting scheme, named Double Increment Double Decrement (DIDD), to improve the performance of IEEE 802.11 Binary Exponential Backoff (BEB) under an error-prone environment. Our work becomes important and meaningful in the sense that it predicts both IEEE 802.11 BEB and DIDD performance very accurately considering transmission errors. We explore the effect of transmission errors, packet size, data rate and network size on the performance of BEB and DIDD, in terms of throughput efficiency, average packet delay, packet drop probability and packet interarrival time.