2008 IEEE International Conference on Sensor Networks, Ubiquitous, and Trustworthy Computing (sutc 2008) A Hilbert Curve-Based Distributed Index for Window Queries in Wireless Data Broadcast Systems June 11-June 13 ISBN: 978-0-7695-3158-8
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/SUTC.2008.13
Location-dependent spatial query in the wireless environment is that mobile users query the spatial objects dependent on their current location. The window query is one of the essential spatial queries, which finds spatial objects located within a given window. In this paper, we propose a Hilbert curve-based distributed index for window queries in the wireless data broadcast systems. Our proposed algorithm allocates spatial objects in the Hilbert-curve order to preserve the spatial locality. Moreover, to quickly answer window queries, our proposed algorithm utilizes the neighbor-link index, which has knowledge about neighbor objects, to return the answered objects. From our experimental study, we have shown that our proposed algorithm outperforms the distributed spatial index.
Index Terms:
Location-dependent spatial query, power constraint, space-filling curve, spatial index, wireless data broadcast
Citation:
Jun-Hong Shen, Ye-In Chang, "A Hilbert Curve-Based Distributed Index for Window Queries in Wireless Data Broadcast Systems," sutc, pp.367-372, 2008 IEEE International Conference on Sensor Networks, Ubiquitous, and Trustworthy Computing (sutc 2008), 2008 Usage of this product signifies your acceptance of the Terms of Use. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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