2nd International ICST Conference on Bio-Inspired Models of Network, Information, and Computing Systems

Research Article

Evaluation of Robustness in Time Synchronization for Sensor Networks

Download85 downloads
  • @INPROCEEDINGS{10.4108/ICST.BIONETICS2007.2453,
        author={Akira Mutazono and Masashi Sugano and Masayuki Murata},
        title={Evaluation of Robustness in Time Synchronization for Sensor Networks},
        proceedings={2nd International ICST Conference on Bio-Inspired Models of Network, Information, and Computing Systems},
        proceedings_a={BIONETICS},
        year={2008},
        month={8},
        keywords={CSMA/CA  multi-hop RBS  pulse coupled oscillator  sensor networks  synchronization},
        doi={10.4108/ICST.BIONETICS2007.2453}
    }
    
  • Akira Mutazono
    Masashi Sugano
    Masayuki Murata
    Year: 2008
    Evaluation of Robustness in Time Synchronization for Sensor Networks
    BIONETICS
    ICST
    DOI: 10.4108/ICST.BIONETICS2007.2453
Akira Mutazono1,*, Masashi Sugano2,*, Masayuki Murata3,*
  • 1: Graduate School of Information Science and Technology, Osaka University 1-5 Yamadaoka, Suita-shi, Osaka, 565-0871, Japa
  • 2: School of Comprehensive Rehabilitation, Osaka Prefecture University 3-7-30 Habikino, Habikino-shi, Osaka, 583-8555, Japan
  • 3: Graduate School of Information Science and Technology, Osaka University 1-5 Yamadaoka, Suita-shi, Osaka, 565-0871, Japan
*Contact email: a-mutazono@ist.osakau._ac.jp, sugano@rehab.osakafuu._ac.jp, murata@ist.osaka-u.ac.jp

Abstract

In sensor networks, time synchronization between sensor nodes is important because it aects not only the eciency of information gathering but also energy consumption. Since sensor network environments and sizes change at varying rates, dierent time synchronization techniques are required for dierent networks. The pulse-coupled oscillator (PCO) model can be used to achieve local interactions between in- dividuals for the synchronization of entire networks. Other methods also exist, such as the multi-hop reference broad- cast synchronization (RBS) method which synchronizes the entire network by transmitting the dierences in the timers of reference nodes through networks divided into clusters. We compare here the inuence of jitter delay and packet loss resulting from the lower layer protocol on these two techniques. We also investigate the inuence on the perfor- mance of both methods on network size and wireless channel quality. The simulation results show the conditions in which each method performs better.