›› 2010, Vol. 25 ›› Issue (2): 330-346.

Special Issue: Computer Networks and Distributed Computing

• Distributed Computing and Systems • Previous Articles     Next Articles

Location-Based Data Dissemination for Spatial Queries in Wireless Broadcast Environments

Kwangjin Park1 and Hyunseung Choo2   

  1. 1School of Electrical Electronics and Information Engineering, Wonkwang University, Iksan-Shi, Chunrabuk-do 570-749, Korea
    2School of Information and Communication Engineering, Sungkyunkwan University, 440-746, Suwon, Korea
  • Received:2009-01-20 Revised:2009-10-09 Online:2010-03-05 Published:2010-03-05
  • About author:
    Kwangjin Park received the Ph.D. degree in computer science from Korea University in 2006. He was a postdoctoral fellow in the Atlantic Data Systems (Atlas) Research Group at the Institute National de Recherche en Informatique et en Automatique (INRIA)-Rennes and located at the Laboratoire dinformatique de Nantes-Atlantique (LINA), Nantes. In 2008, he joined the School of Electrical Electronics and Information Engineering, Wonkwang University, where he is an assistant professor. His research interests include spatiotemporal databases, mobile databases, and data dissemination.
    Hyunseung Choo received the Ph.D. degree in computer science from the University of Texas at Arlington in 1996. From 1997 to 1998, he was a patent examiner at the Korean Industrial Property Office. In 1998, he joined the School of Information and Communication Engineering, Sungkyunkwan University, where he is an associate professor and director of the Convergence Research Institute. Currently, he is director of the Intelligent Human-Computer Interaction (HCI) Convergence Research Center (8-year research program) supported by the Ministry of Information and Communication, Korea, under the Information Technology.
  • Supported by:

    This paper was supported by Wonkwang University in 2009.

Most current research on Location-Based Services (LBSs, for short) assumes point-to-point wireless communication, where the server processes a query and returns the query result to the user via a point-to-point wireless channel. However, LBSs via point-to-point wireless channel suffer from a tremendous amount of traffic and service requests from the user and thereby result in poor performance. In this paper, we present broadcast-based spatial query processing algorithms designed to support k-NN (k-Nearest Neighbor) and range queries via a wireless network. The task of the query processor is to selectively monitor the wireless broadcast channel, when the data items are disseminated by the server, according to their locations. Experiments are conducted to evaluate the performance of the proposed algorithms. Comprehensive experiments illustrate that the presented algorithms are highly scalable and are more efficient than the previous techniques in terms of both access time and energy consumption.


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