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Title: Location-based spatial query processing in wireless broadcast environments
Authors: Ku, W.-S.
Zimmermann, R. 
Wang, H.
Keywords: Broadcast disks
Location dependent and sensitive
Mobile computing
Mobile environments
Issue Date: 2008
Citation: Ku, W.-S., Zimmermann, R., Wang, H. (2008). Location-based spatial query processing in wireless broadcast environments. IEEE Transactions on Mobile Computing 7 (6) : 778-790. ScholarBank@NUS Repository.
Abstract: Location-based spatial queries (LBSQs) refer to spatial queries whose answers rely on the location of the inquirer. Efficient processing of LBSQs is of critical Importance with the ever-increasing deployment and use of mobile technologies. We show that LBSQs have certain unique characteristics that the traditional spatial query processing in centralized databases does not address. For example, a significant challenge is presented by wireless broadcasting environments, which have excellent scalability but often exhibit high-latency database access. In this paper, we present a novel query processing technique that, though maintaining high scalability and accuracy, manages to reduce the latency considerably in answering LBSQs. Our approach is based on peer-to-peer sharing, which enables us to process queries without delay at a mobile host by using query results cached in its neighboring mobile peers. We demonstrate the feasibility of our approach through a probabilistic analysis, and we illustrate the appeal of our technique through extensive simulation results. © 2008 IEEE.
Source Title: IEEE Transactions on Mobile Computing
ISSN: 15361233
DOI: 10.1109/TMC.2007.70791
Appears in Collections:Staff Publications

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