Research On Secure Routing Algorithm For WSN Based On Static Game

The characteristics of WSN that deployed in open areas and using radio broadcasting make the routing of WSN suffers the attackers’ damage easily. At present, there are many routing protocols for WSN. In the aspect of secure routing, the protocols are mainly to authenticate the confidentiality and integrity of the routing information which is broadcasted, and use the multipath to achieve the robustness of routing protocols.According to the research on the existing secure routing protocols for WSN and the rational trend of the sensor nodes, we puts forward a new secure routing protocol for WSN based on static game theory, called GBR. GBR describes the interaction of the nodes in the way of static game theory which depends on the rational characteristic of the sensor nodes. In the choice of forwarding node, neighbor nodes decide whether to participate in forwarding data through the game. GBR avoids malicious nodes to destruct data transmission by computing the utility function as well as controls and adjusts nodes’ behaviors and game result through the incentive mechanism. Thus, GBR can not only reduce the malicious packet loss rate in the network, but also control the nodes’ selfish behavior. In addition, GBR also follows the principle of energy conservation except in pursuit of the security of routing. That, in the process of selecting forwarding node, GBR considers both the security and the energy of the nodes to balance the energy consumption of the network.At first, this thesis introduces the security risks and security objectives in WSN, and analyzes the existing authentication schemes and the typical routing protocols. Then, this paper introduces the related knowledge of game theory, and gives the application feasibility analysis of the game theory in the WSN routing. Through researching on the existing routing protocols for WSN which are based on game theory, this paper puts forward GBR. Subsequently, this thesis describes the static game model and the whole routing protocol in detail. Finally, the simulation of GBR and the comparative experiments between GBR and DD are both performed with OMNeT++4.0. The simulation result shows that GBR not only ensures the lifecycle of network but also limits the selective forwarding attacks effectively, guarantees the security of the routing.