Mobile ad hoc networks (MANETs) are wireless networks, self-directed, self configuring, quickly deployable and operate without infrastructure. It is an impartial network where nodes communicate with each other without the need of any additional resources and move randomly thus forming a dynamic topology. Nodes are often susceptible to failure thus making mobile ad hoc networks open to threats and attacks. In MANET routing relies on mutual trust between the participating nodes but the characteristics of MANET make this tough. Nodes accept to participate in routing but fail to do so where in they misbehave and start dropping packets during the transmission. Such nodes are responsible for untrustworthy routing. A trust based scheme can be used to track these untrustworthy nodes and isolate them from routing, thus provide trustworthiness. In this paper a trusted AODV (TS-AODV) protocol is presented which considers trust value for each node and they are allowed to participate in routing based on their trust value. A threshold value is assigned and if the nodes trust value is greater than this value its marked as trustworthy node and allowed to participate in routing else the node is marked untrustworthy. The TS-AODV increases PDR and decreases delay thereby enhancing the QoS metrics. The work is implemented and simulated on NS-2. The simulation result shows the proposed TS-AODV provides more trustworthy routing compared with general AODV.

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Adhoc Manet Aodv Ts-aodv Trust Qos