A Hierarchical Sequential Index Scheme for Range Queries in Wireless Location-based Services

무선 위치기반서비스에서 영역질의처리를 위한 계층적 인덱스기법

  • 박광진 (원광대학교 전기전자및정보공학부)
  • Published : 2010.02.28

Abstract

In this paper, we propose a novel approach to reduce spatial query access latency and energy consumption by leveraging results from nearby peers in wireless broadcast environments. We propose a three-tier Hierarchical Location-Based Sequential access index, called HLBS, which provides selective tuning (pruning and searching entries) without pointers using a linear accessing structure based on the location of each data object. The HLBS saves search cost and index overhead, since the small index size with a sequential index structure results in low access latency overhead and facilitates efficient searches for sequential-access media (wireless channels with data broadcast). Comprehensive experiments illustrate that the proposed scheme is more efficient than the previous techniques in terms of energy consumption.

본 논문은 무선 브로드캐스트 환경에서 인접한 노드들로부터의 정보를 활용하여 질의접근시간과 에너지소모를 줄이기 위한 인덱스 기법을 소개한다. 우리는 정보의 선별적 청취를 위해 HLBS라 불리는 3-계층 위치기반 순차적 접근방식의 인덱스를 제안한다. HLBS는 객체들의 위치를 참고한 순차적인 접근탐색 구조를 통해 포인터 없이 모든 객체의 인덱스를 구성한다. HLBS는 단순하고 적은 크기의 인덱스 구조로 무선 브로드캐스트 채널에서 효율적인 정보탐색을 지원한다. 시뮬레이션을 통해 제안 기법의 효율적인 정보검색의 성능을 증명하였다.

Keywords

References

  1. A. Prasad Sistla, O. Wolfson, B. Xu,"Opportunistic Data Dissemination in MobilePeer-to-Peer Networks", In Proc. of InternationalSymposium on Spatial and Temporal Databases,pp. 346-363, 2005.
  2. K. Park, H. Choo, "Energy-Efficient DataDissemination Schemes for Nearest NeighborQuery Processing", IEEE Trans. Computers,56(6), pp. 754-768, 2007.
  3. A. Krikelis, "Location-dependent multimediacomputing", IEEE Concurrency, 7(2), pp. 13-15,1999. https://doi.org/10.1109/4434.766979
  4. O. Wolfson, B. Xu, and H. Yin, "Disseminationof Spatial-Temporal Information in MobileNetworks with Hotspots", In Proc. of Databases,Information Systems and Peer-to-PeerComputing, pp. 185-199, 2004
  5. A. Mondal, Y. Lifu and M. Kitsuregawa,"P2PR-Tree: An R-Tree-Based Spatial Index forPeer-to-Peer Environments," In Proc. of Extending Database Technology (EDBT)Workshops, 2004, pp. 516-525.
  6. A. Guttman, "R-trees: A dynamic index structurefor spatial searching", In Proc. of Special InterestGroup on Management of Data, pp. 47-57, 1984.
  7. K. Park, M. Song, C. Hwang, "Broadcast-Based Spatial Queries", J. Comput. Sci. Technol. 20(6): 811-821, 2005. https://doi.org/10.1007/s11390-005-0811-9