Title :
Monitoring Top-k Query inWireless Sensor Networks
Author :
Wu, Minji ; Xu, Jianliang ; Tang, Xueyan ; Lee, Wang-Chien
Author_Institution :
Hong Kong Baptist University
Abstract :
Top-k monitoring is important to many wireless sensor applications. This paper exploits the semantics of top-k query and proposes a novel energy-efficient monitoring approach, called FILA. The basic idea is to install a filter at each sensor node to suppress unnecessary sensor updates. The correctness of the top-k result is ensured if all sensor nodes perform updates according to their filters. We show via simulation that FILA outperforms the existing TAGbased approach by an order of magnitude.
Keywords :
Aggregates; Base stations; Energy efficiency; Filters; Monitoring; Routing; Sampling methods; Technical Activities Guide -TAG; Telecommunication traffic; Wireless sensor networks;
Conference_Titel :
Data Engineering, 2006. ICDE '06. Proceedings of the 22nd International Conference on
Print_ISBN :
0-7695-2570-9
DOI :
10.1109/ICDE.2006.103
