Efficient indexing methods of continuously moving object in wireless networks

  • Authors:
  • Yoon Chul Jung;Hyung Gon Song;Sang Taeck Moon

  • Affiliations:
  • LIGNex1 Co., Ltd., Yougin, Gyeonggi-do, South Korea;LIGNex1 Co., Ltd., Yougin, Gyeonggi-do, South Korea;LIGNex1 Co., Ltd., Yougin, Gyeonggi-do, South Korea

  • Venue:
  • Proceedings of the 9th ACM international symposium on Mobility management and wireless access
  • Year:
  • 2011

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Abstract

The advances of wireless communication technologies, personal locator technology, and global positioning systems enable a wide range of services in real time environments. To enable the services, a number of spatiotemporal access methods have been proposed for handling timestamp and time interval queries. However, the performance of the existing methods of a single index structure quickly degrades as time progresses. To overcome the problem, we propose to employ spatio-temporal based time partitioning on the R-tree called SPR-Tree). The proposed scheme employs a new insertion policy to reduce the height of the tree and a time grouping method in order to minimize the search time of various queries. Extensive computer simulation reveals that the proposed scheme significantly outperforms the existing schemes.