Open Access

Design and Implementation of an Enhanced 802.11 MAC Architecture for Single-Hop Wireless Networks

  • Ralph Bernasconi1Email author,
  • Silvia Giordano1,
  • Alessandro Puiatti1,
  • Raffaele Bruno2 and
  • Enrico Gregori2
EURASIP Journal on Wireless Communications and Networking20072007:028315

https://doi.org/10.1155/2007/28315

Received: 29 June 2006

Accepted: 27 November 2006

Published: 22 January 2007

Abstract

Due to its extreme simplicity and flexibility, the IEEE 802.11 standard is the dominant technology to implement both infrastructure-based WLANs and single-hop ad hoc networks. In spite of its popularity, there is a vast literature demonstrating the shortcomings of using the 802.11 technology in such environments, such as dramatic degradation of network capacity as contention increases and vulnerability to external interferences. Therefore, the design of enhancements and optimizations for the original 802.11 MAC protocol has been a very active research area in the last years. However, all these modifications to the 802.11 MAC protocol were validated only through simulations and/or analytical investigations. In this paper, we present a very unique work as we have designed a flexible hardware/software platform, fully compatible with current implementations of the IEEE 802.11 technology, which we have used to concretely implement and test an enhanced 802.11 backoff algorithm. Our experimental results clearly show that the enhanced mechanism outperforms the standard 802.11 MAC protocol in real scenarios.

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Authors’ Affiliations

(1)
Department of Innovative Technologies, The University of Applied Sciences of Southern Switzerland (SUPSI)
(2)
Institute for Information Technology (IIT), National Research Council (CNR)

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Copyright

© Ralph Bernasconi et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.