Softening Misbehaviour of Nodes and Enforcing Cooperation in Mobile Ad Hoc Networks

In Ad-Hoc Wireless network nodes have constraints of resources like CPU cycles, memory, battery power, software, because of which they are not always willing or able to forward others data over the network even if they have previously agreed to do so; also nodes owned by different entities can try to harm the network. These kinds of misbehavior of nodes can be categorized as broken, selfish and rational, overloaded or malicious. Misbehavior increases probability of dropping packets and route failure, which decreases networks performance drastically. We deal with misbehavior by proposing an approach (based on already existing Generous TIT-FOR-TATE algorithm) for forwarding the data packets of nodes, assuming nodes are self interested and energy constrained. We modified the algorithm for best of our use. Results shows that our approach limits the effect of all kind of misbehavior to a particular class of nodes (classified on the basis energy) and rest of the network remain unaffected. Our approach also motivates nodes cooperate for receiving better service from network. Our approach is standalone to handle above all kind of misbehavior and to for the motivation of cooperation among nodes (that is no supports from other).