TRUSTED ROUTING IN AD HOC NETWORK USING BAYESIAN NETWORK

An ad hoc network is a kind of wireless communication network which does not rely on a fixed infrastructure and thus lacks in centralized control. Networks of this kind are based on the fundamental assumption that all the nodes would cooperate and not cheat. This assumption becomes invalid in the situation that compromised or malicious nodes exist. In this paper, we propose a Bayesian network-based trust model and a method for building trust based on the recommendations from other nodes and the node’s own experiences. The model is suitable for ad hoc network without a dedicated trust infrastructure or pre-configuration of nodes. Trusted route can be easily found out and malicious nodes can be circumvented by using the trust model.