Fault Tolerance Models In Ad Hoc Wireless Sensor Networks

Ad Hoc wireless sensor networks are widely used in different domains. These include domestic uses such as personal security and critical ones such as military and medical applications. Unfortunately, sensors are in their nature prone to errors. Also, they are resources constraints. Efficient fault management techniques are therefore necessary. This paper surveys the different models of fault management in literature: central, cellular and hierarchical approaches. We also illustrate the advantages and drawbacks of each model.