Continuous Monitoring of Spatial Queries in Wireless Broadcast Environments

• Main Authors: MOURATIDIS, Kyriakos, Bakiras, Spiridon, Papadias, Dimitris
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2009
• Subjects: Access latency; Air indexes; Broadcast channels; Computational capability; Continuous monitoring; Energy consumption; Indexing framework; Location-based services; Moving objects; Snapshot queries; Spatial databases; Spatial queries; Spatial query processing; Wireless broadcast; Wireless broadcast environment; Wireless data broadcast; Databases and Information Systems; Numerical Analysis and Scientific Computing
• Online Access: https://ink.library.smu.edu.sg/sis_research/770; https://ink.library.smu.edu.sg/context/sis_research/article/1769/viewcontent/TMC09_BGI.pdf
• Institution: Singapore Management University

Wireless data broadcast is a promising technique for information dissemination that leverages the computational capabilities of the mobile devices in order to enhance the scalability of the system. Under this environment, the data are continuously broadcast by the server, interleaved with some indexing information for query processing. Clients may then tune in the broadcast channel and process their queries locally without contacting the server. Previous work on spatial query processing for wireless broadcast systems has only considered snapshot queries over static data. In this paper, we propose an air indexing framework that 1) outperforms the existing (i.e., snapshot) techniques in terms of energy consumption while achieving low access latency and 2) constitutes the first method supporting efficient processing of continuous spatial queries over moving objects.