3. Interference Free Group Testing and Reactive Jamming Attacks

Another application of group testing that we would like to introduce is to against reactive jamming attacks , which has emerged as a great security threat to wireless sensor networks, due to its mass destruction to legitimate sensor communications and difficulty to be disclosed and defended. There exist many studies against these attacks, however, these methods, i.e., frequency hopping or channel surfing, require excessive computational capabilities on wireless devices. To overcome the shortcomings, we present here an interference free group-testing based solution by identifying the trigger nodes, whose transmissions activate any reactive jammers. The identification of these trigger nodes can help us to (1) carefully design a better routing protocol by switching these nodes into only receivers to avoid activating jammers and (2) locate the jammers based on the trigger nodes, thus providing an alternative mechanism against reactive jamming attacks. The theoretical analysis and experimental results show that this advanced scheme performs well in terms of time and message complexities.