NDLI: Location-aware caching for spatial queries in dynamic environments

Content Provider	IEEE Xplore Digital Library
Author	Bo Yang Hurson, A.R.
Copyright Year	2006
Description	Author affiliation: Dept. of Comput. Sci. & Eng., Pennsylvania State Univ., University Park, PA (Bo Yang; Hurson, A.R.)
Abstract	Spatial query processing is important to the emerging mobile network applications such as ad hoc networks and mobile sensor networks. The conventional caching techniques are ineffective in dealing with spatial queries in dynamic environments due to the following reasons: first, the cache contents are described based on queries instead of data locations, which lead to the inefficiency in describing the data content distribution in the network; in addition, the results of earlier queries may be invalidated immediately after query resolution due to the mobility of data objects; moreover, the data volumes and number of clients may be quite large that deteriorate the performance of conventional caching approaches. In this paper, we address these issues using position-locus map, a caching scheme that reflects the distribution of mobile data objects based on the analysis of locations of interest and earlier queries. We show that spatial queries may be answered efficiently with the position-locus map, with reduced search cost and system overhead
Starting Page	141
Ending Page	146
File Size	261827
Page Count	6
File Format	PDF
ISBN	1424402697
ISSN	15253511
e-ISBN	1424402700
DOI	10.1109/WCNC.2006.1683454
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spatial resolution Indexing Contracts Query processing Computer science Application software Ad hoc networks Costs Wireless networks Mobile communication
Content Type	Text
Resource Type	Article

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