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A Distributed Spatial Indexing Technique based on Hilbert Curve and MBR for k-NN Query Processing in a Single Broadcast Channel Environment  

Yi, Jung-Hyung (서강대학교 컴퓨터공학과)
Jung, Sung-Won (서강대학교 컴퓨터공학과)
Publication Information
Journal of KIISE:Databases / v.37, no.4, 2010 , pp. 203-208 More about this Journal
Abstract
This paper deals with an efficient index scheduling technique based on Hilbert curve and MBR for k-NN query in a single wireless broadcast channel environment. Previous works have two major problems. One is that they need a long time to process queries due to the back-tracking problem. The other is that they have to download too many spatial data since they can not reduce search space rapidly. Our proposed method broadcasts spatial data based on Hilbert curve order where a distributed index table is also broadcast with each spatial data. Each entry of index table represents the MBR which groups spatial data. By predicting the unknown location of spatial data, our proposed index scheme allows mobile clients to remove unnecessary data and to reduce search space rapidly. As a result, our method gives the decreased tuning time and access latency.
Keywords
LBS query; k-NN query; Hilbert curve; MBR;
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