-Based on cooperative gaml! theory, we propose a nl!W technique for bandllng seturlty Issues in mobile wireless seNIor networks. We define a game between sensor nodes and concentrate on threl! fundamental factol'll: rooperation, reputa· tlon and quality of security. Stronger cooperation between two nodes implies more reliable data communication between them. And the more a node cooperates, the better Is Its repulatilln, which decreas똧酕 when misbehavior Is detected. When seCurity of the network Is compromised, the percentage of exposed traffic measures the quality of secu똧酕ty of sensor nodes. By incorporating these three factors, we cluster the sens똧r nodes such .that within a duster, the payoff funcUlln Ilf all sensor nodes are dose to each other, where payoff Is the largest possible individual gain for each sensor according to a defined utility metric. We define one strategy set for eadl node, which guarantees reaching to an equilibrium point tilT payoff function.
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