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Content Provider | IEEE Xplore Digital Library |
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Author | Myungho Yeo Dongook Seong Jaesoo Yoo |
Copyright Year | 2009 |
Description | Author affiliation: Department of Information and Communication Engineering, Chungbuk National University, Cheongju, Korea (Myungho Yeo; Dongook Seong; Jaesoo Yoo) |
Abstract | Top-k queries are important to many wireless sensor applications. Conventional Top-k query processing algorithms install a filter at each sensor node and suppress unnecessary sensor updates. However, they have some drawbacks that the sensor nodes consume energy extremely to probe sensor reading or update filters. Especially, it becomes worse, when the variation ratio of top-k result is higher. In this paper, we propose a novel top-k query processing algorithm for energy-efficiency. First, each sensor determines its priority as the order of data gathering. Next, sensor nodes that have higher priority transmit their sensor readings to the base station until gathering k sensor readings. In order to show the superiority of our query processing algorithm, we simulate the performance with the existing query processing algorithms. As a result, our experimental results show that the network lifetime of our method is prolonged largely over the existing method. |
Starting Page | 103 |
Ending Page | 106 |
File Size | 1946050 |
Page Count | 4 |
File Format | |
ISBN | 9781424426980 |
DOI | 10.1109/RWS.2009.4957295 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2009-01-18 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Monitoring Wireless sensor networks Filters Query processing Base stations Energy efficiency Probes Technical Activities Guide -TAG Routing Energy consumption in-network processing sensor network top-k monitoring ranking query |
Content Type | Text |
Resource Type | Article |
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