Energy efficient index for querying location-dependent data in mobile broadcast environments

We are witnessing in recent years growing interest for location-dependent information services among mobile users. We examine the issue of processing location-dependent queries in a mobile broadcast environment. Different from a traditional environment, mobile users are concerned with not only acces...

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Main Authors: XU, Jianliang, ZHENG, Baihua, LEE, Wang-chien, LEE, Dik Lun
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Language:English
Published: Institutional Knowledge at Singapore Management University 2003
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Online Access:https://ink.library.smu.edu.sg/sis_research/1295
http://doi.ieeecomputersociety.org/10.1109/ICDE.2003.1260796
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Institution: Singapore Management University
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spelling sg-smu-ink.sis_research-22942011-01-03T05:09:24Z Energy efficient index for querying location-dependent data in mobile broadcast environments XU, Jianliang ZHENG, Baihua LEE, Wang-chien LEE, Dik Lun We are witnessing in recent years growing interest for location-dependent information services among mobile users. We examine the issue of processing location-dependent queries in a mobile broadcast environment. Different from a traditional environment, mobile users are concerned with not only access latencies but also power conservation. The planar point location algorithms and conventional spatial index structures are shown inefficient. We propose a new index data structure, called D-tree, for querying location-dependent data in mobile broadcast environments. The basic idea is to index data regions based on the divisions between them. We describe how to construct the binary D-tree index, how to process location-dependent queries based on this index structure, and how to page the D-tree to fit the packet capacity. The performance of the D-tree is evaluated using both synthetic and real datasets. Experimental results show that the proposed D-tree provides a much better overall performance than the well-known existing schemes such as the R*-tree. 2003-03-05T08:00:00Z text https://ink.library.smu.edu.sg/sis_research/1295 info:doi/10.1109/ICDE.2003.1260796 http://doi.ieeecomputersociety.org/10.1109/ICDE.2003.1260796 Research Collection School Of Computing and Information Systems eng Institutional Knowledge at Singapore Management University Databases and Information Systems Numerical Analysis and Scientific Computing
institution Singapore Management University
building SMU Libraries
continent Asia
country Singapore
Singapore
content_provider SMU Libraries
collection InK@SMU
language English
topic Databases and Information Systems
Numerical Analysis and Scientific Computing
spellingShingle Databases and Information Systems
Numerical Analysis and Scientific Computing
XU, Jianliang
ZHENG, Baihua
LEE, Wang-chien
LEE, Dik Lun
Energy efficient index for querying location-dependent data in mobile broadcast environments
description We are witnessing in recent years growing interest for location-dependent information services among mobile users. We examine the issue of processing location-dependent queries in a mobile broadcast environment. Different from a traditional environment, mobile users are concerned with not only access latencies but also power conservation. The planar point location algorithms and conventional spatial index structures are shown inefficient. We propose a new index data structure, called D-tree, for querying location-dependent data in mobile broadcast environments. The basic idea is to index data regions based on the divisions between them. We describe how to construct the binary D-tree index, how to process location-dependent queries based on this index structure, and how to page the D-tree to fit the packet capacity. The performance of the D-tree is evaluated using both synthetic and real datasets. Experimental results show that the proposed D-tree provides a much better overall performance than the well-known existing schemes such as the R*-tree.
format text
author XU, Jianliang
ZHENG, Baihua
LEE, Wang-chien
LEE, Dik Lun
author_facet XU, Jianliang
ZHENG, Baihua
LEE, Wang-chien
LEE, Dik Lun
author_sort XU, Jianliang
title Energy efficient index for querying location-dependent data in mobile broadcast environments
title_short Energy efficient index for querying location-dependent data in mobile broadcast environments
title_full Energy efficient index for querying location-dependent data in mobile broadcast environments
title_fullStr Energy efficient index for querying location-dependent data in mobile broadcast environments
title_full_unstemmed Energy efficient index for querying location-dependent data in mobile broadcast environments
title_sort energy efficient index for querying location-dependent data in mobile broadcast environments
publisher Institutional Knowledge at Singapore Management University
publishDate 2003
url https://ink.library.smu.edu.sg/sis_research/1295
http://doi.ieeecomputersociety.org/10.1109/ICDE.2003.1260796
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