ISSN : 1796-2021
Volume : 2    Issue : 4    Date : June 2007

A Fault Tolerance Management Framework for Wireless Sensor Networks
Iman Salehy, Mohamed Eltoweissy, Adnan Agbariax, and Hesham El-Sayed
Page(s): 38-48
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Wireless Sensor Networks (WSNs) have the potential of significantly enhancing our ability to
monitor and interact with our physical environment. Realizing a fault tolerant operation is critical to
the success of WSNs. The main challenge is providing fault tolerance (FT) while conserving
the limited resources of the network. Many schemes have been proposed in this area. Our main
contribution in this paper is to propose a general framework for fault tolerance in WSNs. The
proposed framework can be used to guide the design and development of FT solutions and to
evaluate existing ones. We present a comparative study of the existing schemes and identify
potential enhancements. A primary module of the framework is the learning and refinement module
which enables a FT solution to be adaptive and self-configurable based on changes in the network
conditions. We view this as vital to the resource-constrained and highly dynamic WSNs. Up to our
knowledge, we are the first to propose the implementation of such module in FT solutions for WSNs.
Index Terms
Networked sensor systems, Fault tolerance, Checkpoint/Restart