A step further of PDR-based jammer localization through dynamic power adaptation

In recent years, researchers have proposed many jammer localization schemes. Among them, Packet Delivery Ratio (PDR)-based jammer localization is a promising scheme which locates jammer by successive forwarding of PDR measurements to neighbours in a distributed manner without any modifications to hardware. Since strong jamming signal corrupts the communication of jammed nodes, the PDR value of such nodes drops to zero. As a result, the PDR gradient descent process couldn´t go forward on the jammed nodes, causing a certain location error. In this paper, we put forward a method to enhance the performance of PDR-based jammer localization through dynamic power adaptation. By increasing the transmission power of the consideration node, its communication ability can be reconstructed to exchange message. After message delivering and sharing among jammed nodes, the node with largest Received Jamming Signal Strength (RJSS) value can be found and is taken as the estimation of jammer. Simulation experiments are conducted to evaluate the correctness and effectiveness of the proposed algorithm. Experimental results verify that, the improved localization scheme has a better performance than current PDR-based method.