Fault Tolerance in Wireless Sensor Networks using Negative Code Answering Algorithm

Fault Tolerance is an important factor in Wireless Sensor Network (WSN) as an emerging research field. Nodes in WSN get easily depleted due to battery limitation in battlefield and unattended environment. Fault causes severe damage in a network, to reduce the effect of this fault, fault tolerance becomes very essential method. To track the network node failure, Negative code Answering (NCA) Algorithm is proposed in wireless sensor network with the assist of Mobile Agent (MA) techniques. MA is lightweight process and this paper used MA as Collecting Agent (CA) and Monitoring Agent (MNA). Agents provide fault tolerance in a network. NCA is used to identify the non-working, malicious, fault node in a network by using Collecting Agent Monitoring Agent. CA can communicate with MNA and made network as fault free. This method increases the performance of the network using Mobile Agent concept in achieving fault tolerance.