Bankrupting the jammer in WSN

摘要

The high vulnerability of the wireless sensor nodes to jamming arises from the low resilience and easy differentiability of protocol control messages, and the high predictability of node wakeup schedules. In this paper, we propose Jam-Buster - a jam-resistant solution for WSN, orthogonal to the existing antijamming solutions, that increases resilience by using multi-block payloads, eliminates differentiation by using equal size packets and reduces predictability by randomizing the wakeup times of the sensors. While each of these individual components is quite simple, the combination of the three components results in a jam-resilient system that forces the jammer to transmit more enabling faster detection of the jammer by the sensors, and to spend more energy to be effective and so reduce its own lifetime. By modeling our system using game theory and then evaluating the system in a TmoteSky testbed, we show that Jam-Buster reduces the overall efficiency of an intelligent jammer.