Enhanced QOD Routing Protocol with Probabilistic Misbehavior Node Detection Scheme

QoS oriented distributed routing protocol (QOD) for hybrid networks to provide QoS services in a highly dynamic scenario. In the highly dynamic environment, the link between the nodes changes frequently. So, the route failure will occur in the network which leads to packet loss during transmission. To avoid this, we can propose link aware opportunistic relay node selection algorithm. In this algorithm, all the nodes not going to maintain the routing table. At the time of transmission, the source node builds the route to reach the destination by using the parameter link residual life time. The Link residual life is defined as “How long the link between the wireless nodes exists and capability of that link to provide efficient communication without fails. The link residual life is used to avoid poor link connectivity and reduce the possibility of retransmissions. Major issue in MANET is identifying the node behavior even QOD protocol provides service in quality where it come to efficiency we can’t expect good result. In this paper, we propose Node-Trust, a probabilistic misbehavior detection scheme, for secure QOS routing toward efficient trust establishment. The basic idea of Node-Trust is introducing a periodically available Trusted Authority (TA) to judge the node’s behavior based on the collected routing evidences and probabilistically checking. We model Node-Trust as the inspection game and use game theoretical analysis to demonstrate that, by setting an appropriate investigation probability, TA could ensure the security of QOS routing at a reduced cost.