Region extreme value query in sensor networks

Authors:
Zhongbo Wu;Hong Chen
Affiliations:
School of Information, Renmin University of China, Beijing, China and MOE Key Lab of Data Engineering and Knowledge Engineering, Beijing, China;School of Information, Renmin University of China, Beijing, China and MOE Key Lab of Data Engineering and Knowledge Engineering, Beijing, China
Venue:
FSKD'09 Proceedings of the 6th international conference on Fuzzy systems and knowledge discovery - Volume 5
Year:
2009

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Abstract

Existing research on extreme value query in wireless sensor networks is mainly focus on finding out sensors with highest metric. Yet in most actually scenarios, people cares more about special network regions than detailed metric of some single nodes. We put forward region extreme query in sensor networks which don't consider a sensor node but a region as query unit. We formally define region extreme value query and discuss how they can be expressed using the SQL. Then we devise a distributed algorithm named DCA for in-network evaluation of region extreme value query in dynamic region, aiming at the minimization of power consumption. Experiments show that DCA has good performance.