NDLI: Robust computation of aggregates in wireless sensor networks: distributed randomized algorithms and analysis

Content Provider	IEEE Xplore Digital Library
Author	Chen, J.-Y. Pandurangan, G. Xu, D.
Copyright Year	2005
Description	Author affiliation: Dept. of Comput. Sci., Purdue Univ., West Lafayette, IN, USA (Chen, J.-Y.; Pandurangan, G.; Xu, D.)
Abstract	A wireless sensor network consists of a large number of small, resource-constrained devices and usually operates in hostile environments that are prone to link and node failures. Computing aggregates such as average, minimum, maximum and sum is fundamental to various primitive functions of a sensor network like system monitoring, data querying, and collaborative information processing. In this paper we present and analyze a suite of randomized distributed algorithms to efficiently and robustly compute aggregates. Our distributed random grouping (DRG) algorithm is simple and natural and uses probabilistic grouping to progressively converge to the aggregate value. DRG is local and randomized and is naturally robust against dynamic topology changes from link/node failures. Although our algorithm is natural and simple, it is nontrivial to show that it converges to the correct aggregate value and to bound the time needed for convergence. Our analysis uses the eigen-structure of the underlying graph in a novel way to show convergence and to bound the running time of our algorithms. We also present simulation results of our algorithm and compare its performance to various other known distributed algorithms. Simulations show that DRG needs much less transmissions than other distributed localized schemes, namely gossip and broadcast flooding.
Sponsorship	IEEE Electron Devices Soc. - Boise Chapter Electrochemistry Soc. ECS IEEE Boise Sect. IEEE EDS Region 6 / SRC Micron Found
Starting Page	348
Ending Page	355
File Size	541638
Page Count	8
File Format	PDF
ISBN	0780392019
DOI	10.1109/IPSN.2005.1440945
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Condition monitoring Wireless sensor networks Aggregates Robustness Computer networks Sensor systems Distributed computing Distributed algorithms Convergence
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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