SECTOR BASED MOBILE AGENT MIGRATION IN WIRELESS SENSOR NETWORK FOR DATA AGGREGATION

Data aggregation is the process of collecting and aggregating the useful data. End-to-end data aggregation, without degrading sensing accuracy, is a very relevant issue in wireless sensor networks (WSN) that can prevent network congestion to occur. Recently, mobile agents have been used for aggregation due to their efficient utilization of network bandwidth and energy. Most of the mobile agent based schemes use static pre-planned route for agent’s migration. The issue with static route based agent migration is that an agent may not move along its route due to node failures or malicious node attacks. The proposed system uses dynamic route which offers more flexibility to find a way around node or link failures. When sensor nodes are compromised by the attacker, the attacker gets access to security keys and reprograms the sensor nodes to spoil the execution of an agent. Thus in order to provide an efficient solution to overcome these attacks, proposed system uses trustworthiness of nodes to be used to identify and bypass the malicious or compromised nodes. The performance is evaluated using NS2 simulator.