NDLI: Radio irregularity problem in wireless sensor networks: New experimental results

Content Provider	IEEE Xplore Digital Library
Author	Ababneh, N.
Copyright Year	2009
Description	Author affiliation: Advanced Networks Research Group, Faculty of Engineering and Information Technologies, University of Sydney, NSW 2006, Australia (Ababneh, N.)
Abstract	A key design issue in wireless networks is represented by the irregular and dynamic radio coverage at each node. This is especially true for wireless sensor networks, which usually employ low quality radio modules to reduce the cost. It results in irregularity in radio coverage and variations in packet reception in different directions. Due to its likely impact on the upper layer protocols, many services, such as localization, routing and others, needs to be resilient to the irregular and dynamic radio propagation, and to include mechanisms to deal with these problems. As such, accurate models of radio propagation patterns are important for protocol design and evaluation. In this paper, measurements of radio propagation patterns have been carried out using the motes themselves. With empirical data obtained from the Mica2 platforms we were able to observe and further quantify such phenomena. The results demonstrate that the radio pattern is largely random; however, radio signal attenuation varies along different direction, and more importantly, is time-varying while stationary.
Starting Page	1
Ending Page	5
File Size	254347
Page Count	5
File Format	PDF
ISBN	9781424433810
DOI	10.1109/SARNOF.2009.4850343
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Radio propagation Routing protocols Attenuation Monitoring Sensor systems Batteries Analytical models Sensor phenomena and characterization Testing
Content Type	Text
Resource Type	Article

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