Exploring in-situ sensing irregularity in wireless sensor networks

Joengmin Hwang, Tian He, Yongdae Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

33 Scopus citations

Abstract

The circular sensing model has been widely used to estimate performance of sensing applications in existing analysis and simulations. While this model provides valuable high-level guidelines, the quantitative results obtained may not reflect the true performance of these applications, due to the existence of obstacles and sensing irregularity introduced by insufficient hardware calibration. In this project, we design and implement two Sensing Area Modeling (SAM) techniques useful in the real world. They complement each other in the design space. P-SAM provides accurate sensing area models for individual nodes using controlled or monitored events, while V-SAMprovides continuous sensing similarity models using natural events in an environment. With these two models, we pioneer an investigation of the impact of sensing irregularity on application performance, such as coverage scheduling. We evaluate SAM extensively in real-world settings, using three testbeds consisting of 40 MICAz motes and 14 XSMmotes. To study the performance at scale, we also provide an extensive 1,400-node simulation. Evaluation results reveal several serious issues concerning circular models, and demonstrate significant improvements.

Original languageEnglish (US)
Title of host publicationSenSys'07 - Proceedings of the 5th ACM Conference on Embedded Networked Sensor Systems
Pages289-303
Number of pages15
DOIs
StatePublished - Dec 1 2007
Event5th ACM International Conference on Embedded Networked Sensor Systems, SenSys'07 - Sydney, NSW, Australia
Duration: Nov 6 2007Nov 9 2007

Publication series

NameSenSys'07 - Proceedings of the 5th ACM Conference on Embedded Networked Sensor Systems

Other

Other5th ACM International Conference on Embedded Networked Sensor Systems, SenSys'07
CountryAustralia
CitySydney, NSW
Period11/6/0711/9/07

Keywords

  • Coverage
  • Event
  • Irregularity
  • Model
  • Scheduling
  • Sensing
  • Similarity

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  • Cite this

    Hwang, J., He, T., & Kim, Y. (2007). Exploring in-situ sensing irregularity in wireless sensor networks. In SenSys'07 - Proceedings of the 5th ACM Conference on Embedded Networked Sensor Systems (pp. 289-303). (SenSys'07 - Proceedings of the 5th ACM Conference on Embedded Networked Sensor Systems). https://doi.org/10.1145/1322263.1322291