International Journal of Computer Science and Mobile Computing (IJCSMC)
In Mobile Ad hoc NETworks (MANETs), tasks are conducted based on the cooperation of nodes in the networks. However, since the nodes are usually constrained by limited computation resources, selfish nodes may refuse to be cooperative. Reputation system is one of the main solutions to the node non-cooperation problem. A reputation system evaluates node behaviors by reputation values and uses a reputation threshold to distinguish trustworthy nodes and untrustworthy nodes. Although, this system has been widely used, very little research has been devoted to investigating the effectiveness of the node cooperation incentives provided by the systems.