Optimal load distribution of cluster head in fault-tolerant wireless sensor network

Wireless sensor network (WSN) is undoubtedly an area of sophisticated research work. The credibility of this astonishing system may be affected by faults due to harsh and hazardous natural calamities from time to time. A WSN that is not ready to deal with such challenging situations may suffer a reduction in overall lifetime or may lead to dire consequences in critical application context. So fault tolerance technique is one of the most vital approach to renew the default condition. In this paper we propose a method to support fault tolerant by function distribution. Initially, the entire network is considered as a set of clusters. One cluster head is selected from each cluster and later some of its functions are distributed between its two neighbours. This is achieved in such a way that the energy consumption of the network gets minimised. Through simulation we have established that our proposed schema reduces the cluster head load and prolong the network life span.