This invention relates to a method used in ad hoc network for strengthening a justice and cooperative system, which punishes private nodes effectively and increases cooperation of nodes by a system of neighbor cooperative monitor and credit evaluation, at the same time , when the residual energy of the nodes at the hot point positions is not enough, it can give them protection in routing, namely, avoiding selecting route that passes through the hot points as much as possible so as to prolong the working time of the node and the life time of the entire network, a trust system is set up by credit value and on-line time and nodes only protects the trusted low capacity neighbor nodes. |