Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6520
Title: An energy-efficient framework for multirate query in wireless sensor networks
Authors: Chen, Y
Xu, M
Wang, HM
Leong, HV 
Cao, J 
Chan, KCC 
Chan, ATS 
Keywords: Broadcasting
Communication systems
Computer simulation
Data processing
Energy efficiency
Routing algorithms
User interfaces
Issue Date: 27-May-2007
Publisher: Springer
Source: EURASIP journal on wireless communications and networking, 27 May 2007, v. 2007, 48984, p. 1-10 How to cite?
Journal: EURASIP journal on wireless communications and networking 
Abstract: Minimizing the communication overhead is always a hot topic in wireless sensor networks. In a multirate query system, data sources disseminate the data streams to users at the frequency they request. However, sending data in different frequencies to individual users is very costly. We address this problem by broadcasting a single consolidated data stream, aiming at reducing the amount of transmitted data. Taking into account the data correlation, we can reconstruct the data streams at lower frequencies from the consolidated stream at a higher frequency. In this paper, we propose an energy-efficient framework to process multirate queries and investigate the path-sharing routing tree construction method together with the rate conversion mechanism. We evaluate both the accuracy and energy efficiency by simulation. Simulation results indicate that with a reasonable level of tolerance, the performance gain is significant. As far as we know, this is the first energy-efficient solution for multirate query in wireless sensor networks.
URI: http://hdl.handle.net/10397/6520
ISSN: 1687-1472
EISSN: 1687-1499
DOI: 10.1155/2007/48984
Rights: Copyright © 2007 Yingwen Chen 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.
Appears in Collections:Journal/Magazine Article

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