Probabilistic Checkpointing Protocol to Sensor Network Fault-Tolerant
A wireless sensor network WSN is a collection of autonomous sensors nodes organized into a cooperative network. A sensor node transmits the data quantity to the sink. Indeed, a failed sink may abort the overall mission of the network. Due to their crucial functions, sinks must be designed and maintained to be robust enough in order to face trouble coming from the harsh environment. Thus, as a keystone of a WSN, a sink has to be provided with ability to recover from failures. In this paper, we propose a new protocol avoiding to the sink to be a central point of failure. First, we model a sensor node failure estimation problem through a causal network. Then, we show how the checkpointing process ensures the recovery of the network. This approach reduces both energy consumption and communication bandwidth requirements, and prolongs the lifetime of WSN. Interesting results are given by simulation
Keywords: Wireless sensor network, Fault tolerance, Checkpoint/Restart, Bayesian network.
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ABOUT THE AUTHORS
Titouna Faiza
Computer Science Department, Sciences faculty, El Hadj Lakhdar University, Batna, Algeria
Titouna Chafiq
Ecole Doctorale STIC, M’Sila University, M\'Sila, Algeria
Benferhat Salem
CRIL-CNRS UMR 8081, Sciences Faculty Jean Perrin, Artois University Lens, France
Titouna Faiza
Computer Science Department, Sciences faculty, El Hadj Lakhdar University, Batna, Algeria
Titouna Chafiq
Ecole Doctorale STIC, M’Sila University, M\'Sila, Algeria
Benferhat Salem
CRIL-CNRS UMR 8081, Sciences Faculty Jean Perrin, Artois University Lens, France
