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Dynamic Range Query in Spatial Network Environments

  • Fuyu Liu
  • Tai T. Do
  • Kien A. Hua
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4080)

Abstract

Moving range queries over mobile objects are important in many location management applications. There have been quite a few research works in this area. However, all existing solutions assume an open space environment, which are either not applicable to spatial network environment or require non-trivial extensions. In this paper, we consider a new class of query called Dynamic Range Query. A dynamic range query is a moving range query in a network environment, which retrieves the moving objects within a specified network distance of the moving query point. As this query point moves in the network, the footprint (or shape) of the query range changes accordingly to reflect the new relevant query area. Our execution strategy leverages computing power of the moving objects to reduce server load and communication costs. This scheme is particularly desirable for many practical applications such as vehicles in a street environment, where mobile energy is not an issue. We describe the design details and present our simulation study. The performance results indicate that our solution is almost two magnitudes better than a query index method in terms of server load, and requires similar number of messages when compared to a query-blind optimal scheme.

Keywords

Communication Cost Road Segment Range Query Mobile Object Start Node 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Fuyu Liu
    • 1
  • Tai T. Do
    • 1
  • Kien A. Hua
    • 1
  1. 1.School of Electrical Engineering and Computer ScienceUniversity of Central FloridaOrlandoUSA

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