Fault Diagnosis in Wireless Sensor Networks - A Survey

Fault tolerance is the major issue in wireless sensor networks (WSNs). These networks are mobile in nature hence achieving fault free function in these networks is always a challenge. Therefore, need to diagnose these networks is very important for its graceful performance. In this paper, we have divided the fault diagnosis model into three major modules namely monitoring, detection and recovery. Extensive literature survey has been conducted to survey and analyze different techniques used in all these modules. Some open research problem areas have also been investigated. The given paper presents a comprehensive survey of techniques used to achieve fault tolerance in WSNs.