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Journal of Computer Systems, Networks, and Communications
Volume 2009 (2009), Article ID 409853, 14 pages
http://dx.doi.org/10.1155/2009/409853
Research Article

On Reliable Transmission of Data over Simple Wireless Channels

1Department of Computing Science, University of Alberta, Edmonton, AB, T6G 2E8, Canada
2School of Engineering Science, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada

Received 1 August 2008; Accepted 4 January 2009

Academic Editor: Y.-M. Huang

Copyright © 2009 Pawel Gburzynski et al. 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.

Abstract

Standard protocols for reliable data transmission over unreliable channels are based on various Automatic Repeat reQuest (ARQ) schemes, whereby the sending node receives feedback from the receiver and retransmits the missing data. We discuss this issue in the context of one-way data transmission over simple wireless channels characteristic of many sensing and monitoring applications. Using a specific project as an example, we demonstrate how the constraints of a low-cost embedded wireless system get in the way of a workable solution precluding the use of popular schemes based on windows and periodic acknowledgments. We also propose an efficient solution to the problem and demonstrate its advantage over the traditional protocols.