A fully distributed spatial index for wireless data broadcast

Author

Lee, Wang-Chien ; Zheng, Baihua

Author_Institution

Pennsylvania State Univ., University Park, PA, USA

fYear

2005

fDate

5-8 April 2005

Firstpage

417

Lastpage

418

Abstract

To support location-based services in wireless data broadcast systems, a distributed spatial index (called DSI) is proposed in this paper. DSI is highly efficient because it has a linear yet fully distributed structure that naturally facilitates multiple replications of the index by sharing links in different search trees. Search algorithms for point queries, window queries, and kNN queries, based on DSI are presented. Empirical evaluation of DSI are conducted. Result shows that DSI significantly out-performs R-tree and Hilbert curve index, two state-of-the-art spatial indexing techniques for wireless data broadcast.

Keywords

broadcasting; database indexing; mobile computing; mobility management (mobile radio); query processing; replicated databases; tree data structures; tree searching; visual databases; Hilbert curve index; R-tree; distributed spatial index; distributed structure; kNN query search algorithm; location-based services; multiple index replication; point query search algorithm; tree searching; window query search algorithm; wireless data broadcast system; Broadcasting; Delay; Indexing; Mobile computing; Navigation; Neural networks; Pervasive computing; Random access memory; Scalability; Spatial indexes;

fLanguage

English

Publisher

ieee

Conference_Titel

Data Engineering, 2005. ICDE 2005. Proceedings. 21st International Conference on

ISSN

1084-4627

Print_ISBN

0-7695-2285-8

Type

conf

DOI

10.1109/ICDE.2005.9

Filename

1410151