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Discovery of and Recovery from Failure in a Costal Marine USN Service

  • Ceong, Hee-Taek (Department of Digital Convergence, Chonnam National University) ;
  • Kim, Hae-Jin (Department of Digital Convergence, Chonnam National University) ;
  • Park, Jeong-Seon (Department of Digital Convergence, Chonnam National University)
  • Received : 2011.11.16
  • Accepted : 2011.12.20
  • Published : 2012.03.31

Abstract

In a marine ubiquitous sensor network (USN) system using expensive sensors in the harsh ocean environment, it is very important to discover failures and devise recovery techniques to deal with such failures. Therefore, in order to perform failure modeling, this study analyzes the USN-based real-time water quality monitoring service of the Gaduri Aqua Farms at Songdo Island of Yeosu, South Korea and devises methods of discovery and recovery of failure by classifying the types of failure into system element failure, communication failure, and data failure. In particular, to solve problems from the perspective of data, this study defines data integrity and data consistency for use in identifying data failure. This study, by identifying the exact type of failure through analysis of the cause of failure, proposes criteria for performing relevant recovery. In addition, the experiments have been made to suggest the duration as to how long the data should be stored in the gateway when such a data failure occurs.

Keywords

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