Trust-based routing protocol design in wireless based wireless sensor networks

A Wireless Sensor Network (WSN) is composed of thousands of sensor nodes that enable the transmission of perceived data from the physical world to the requested location via wireless media. Besides the advantages of low cost, small size and easy deployment of the sensor nodes, there are many disadvantages such as limited energy, limited communication capacity and non-replaceable battery problem. In trust-based systems, the goal is not to capture the attack as in intrusion detection systems, but to create a reliable path for the package to ensure that it reaches the target node successfully. In this thesis, a cluster selection method and a secure routing protocol, GüYöM, is proposed for a cluster-based WSN based on the trust value consisting of consistency factor, packet transmission rate and selfishness parameters and the remaining energy level. In the evaluations made by simulation method, GüYöM, LEACH and TLES routing protocols are compared for different values of various network parameters such as the network area, the number of the nodes, and the attacker rate. As performance criteria, packet loss rates, the number of living nodes and energy consumed by the nodes are used. For both attack models, GüYöM has been found to provide longer network life, less consumed energy and reduced packet loss rates compared to LEACH and TLES protocols.