HDOV: an overlay network for wide area spatial data collection

  • Authors:
  • Yuuichi Teranishi;Susumu Takeuchi;Kaname Harumoto

  • Affiliations:
  • Osaka University, Suita, Osaka, Japan;NICT, Otemachi, Chiyoda-Ku, Tokyo, Japan;Osaka University, Suita, Osaka, Japan

  • Venue:
  • Proceedings of the 2011 ACM Symposium on Applied Computing
  • Year:
  • 2011

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Abstract

In this paper, we propose an overlay network called HDOV, a hierarchical extension of Delaunay overlay network for data collection with multiple spatial resolutions. By using HDOV, spatial data with at least specified spatial resolution can be collected reducing the redundant messages for data collection from wide area peer-to-peer network. The proposal in HDOV consists of 1) uniform node selection method for multiple spatial resolution levels and 2) hierarchical overlay network construction methods for the selected nodes. The proposed node selection method in HDOV probabilistically adjusts geographical node densities of the overlay network levels according to the size of the Voronoi cell of each node. We propose two types of hierarchical overlay network construction method: the Selected-Nodes Leading method (SNL) and the Unselected-Nodes Leading method (UNL). Our simulation results show that the proposed method can construct overlay networks that collect data with specified uniform spatial resolutions. The simulation results also show that the UNL requires low network construction cost especially in the skewed node distribution environment and the SNL requires less network reconstruction cost when there are no adjoined node failures.