Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

12-2006

Abstract

Wireless sensor networks have been widely used for civilian and military applications, such as environmental monitoring and vehicle tracking. In these applications, continuous query processing is often required and their efficient evaluation is a critical requirement to be met. Due to the limited power supply for sensor nodes, energy efficiency is a major performance measure in such query evaluation. In this paper, we focus on continuous kNN query processing. We observe that the centralized data storage and monitoring schemes do not favor energy efficiency. We therefore propose a localized scheme to monitor long running nearest neighbor queries in sensor networks. The key idea is to establish a monitoring area for each query so that only the updates relevant to the query are collected. Experimental results show that our scheme outperforms the centralized scheme in terms of energy efficiency and network lifetime.

Discipline

Databases and Information Systems | Numerical Analysis and Scientific Computing

Publication

Mobile Ad-hoc and Sensor Networks: Second International Conference, MSN 2006, Hong Kong, China, December 13-15, 2006: Proceedings

Volume

4325

First Page

662

Last Page

673

ISBN

9783540499329

Identifier

10.1007/11943952_56

Publisher

Springer Verlag

City or Country

Berlin

Additional URL

http://doi.org/10.1007/11943952_56

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