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Sensors 2018, 18(10), 3492;

Strength of Crowd (SOC)—Defeating a Reactive Jammer in IoT with Decoy Messages

Division of Information and Computing Technology, College of Science and Engineering, Hamad Bin Khalifa University, Doha 5825, Qatar
Author to whom correspondence should be addressed.
Received: 10 September 2018 / Revised: 27 September 2018 / Accepted: 12 October 2018 / Published: 16 October 2018
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We propose Strength of Crowd (SoC), a distributed Internet of Things (IoT) protocol that guarantees message broadcast from an initiator to all network nodes in the presence of either a reactive or a proactive jammer, that targets a variable portion of the radio spectrum. SoC exploits a simple, yet innovative and effective idea: nodes not (currently) involved in the broadcast process transmit decoy messages that cannot be distinguished (by the jammer) from the real ones. Therefore, the jammer has to implement a best-effort strategy to jam all the concurrent communications up to its frequency/energy budget. SoC exploits the inherent parallelism that stems from the massive deployments of IoT nodes to guarantee a high number of concurrent communications, exhausting the jammer capabilities and hence leaving a subset of the communications not jammed. It is worth noting that SoC could be adopted in several wireless scenarios; however, we focus on its application to the Wireless Sensor Networks (WSN) domain, including IoT, Machine-to-Machine (M2M), Device-to-Device (D2D), to name a few. In this framework, we provide several contributions: firstly, we show the details of the SoC protocol, as well as its integration with the IEEE 802.15.4-2015 MAC protocol; secondly, we study the broadcast delay to deliver the message to all the nodes in the network; and finally, we run an extensive simulation and experimental campaign to test our solution. We consider the state-of-the-art OpenMote-B experimental platform, adopting the OpenWSN open-source protocol stack. Experimental results confirm the quality and viability of our solution. View Full-Text
Keywords: IoT; distributed systems; anti-jamming protocols; reactive jamming; proactive jamming; experimentation IoT; distributed systems; anti-jamming protocols; reactive jamming; proactive jamming; experimentation

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Sciancalepore, S.; Oligeri, G.; Di Pietro, R. Strength of Crowd (SOC)—Defeating a Reactive Jammer in IoT with Decoy Messages. Sensors 2018, 18, 3492.

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