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Broadcast-Based Spatial Queries

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Abstract

Indexing techniques have been developed for wireless data broadcast environments, in order to conserve the scarce power resources of the mobile clients. However, the use of interleaved index segments in a broadcast cycle increases the average access latency for the clients. In this paper, the broadcast-based spatial query processing methods (BBS) are presented for the location-based services. In the BBS, broadcasted data objects are sorted sequentially based on their locations, and the server broadcasts the location dependent data along with an index segment. Then, a sequential prefetching and caching scheme is designed to reduce the query response time. The performance of this scheme is investigated in relation to various environmental variables, such as the distributions of the data objects, the average speed of the clients and the size of the service area.

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Authors and Affiliations

  1. Department of Computer Science and Engineering, Korea University, 5-1, Anam-Dong, Seongbuk-Ku, Seoul, 136-701, Korea

    Kwang-Jin Park, Moon-Bae Song & Chong-Sun Hwang

Authors
  1. Kwang-Jin Park
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  2. Moon-Bae Song
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  3. Chong-Sun Hwang
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Correspondence to Kwang-Jin Park.

Additional information

Kwang-Jin Park received his B.S. and M.S. degrees in computer science from Korea, University, Korea, in 2000 and 2002, respectively. He is currently a Ph.D. candidate in computer science and engineering and a researcher in the Research Institute of Computer Information and Communication, Korea University, Korea. His research interests include location-dependent information systems, mobile databases, and mobile computing systems.

Moon-Bae Song received his B.S. degree in computer science from Kunsan National University in 1996, and his M.S. degree in computer science from Soongsil University in 1998. He is currently a Ph.D. candidate in computer science and engineering, Korea University, Korea. He is also a researcher in the Research Institute of Computer Information and Communication at Korea University. His research interests include moving objects database, location-aware services, mobility modeling, and data management for mobile computing.

Chong-Sun Hwang received his M.S. degree in mathematics from Korea University, Seoul, Korea in 1970, and his Ph.D. degree in statistics and computer science from the University of Georgia in 1978. From 1978 to 1980, he was an assistant professor at South Carolina Lander State University. He is currently a full professor in the Department of Computer Science and Engineering at Korea University, Seoul, Korea. Since 1995, he has been Dean in the Graduate School of Computer Science and Technology at Korea University. His recent research interests include distributed systems, distributed algorithms, and mobile computing systems.

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Park, KJ., Song, MB. & Hwang, CS. Broadcast-Based Spatial Queries. J Comput Sci Technol 20, 811–821 (2005). https://doi.org/10.1007/s11390-005-0811-9

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  • DOI: https://doi.org/10.1007/s11390-005-0811-9

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