A Blockchain-Based Approach for Optimal and Secure Routing in Wireless Sensor Networks and IoT

The traffic load balance, the interferences reduction, and the security during the routing phase in wireless sensor networks (WSN) and IoT are investigated in this paper. In our work, we suppose that the network's nodes are sensing some events which generate heavy data that must be carried over several packets. We propose a routing protocol that makes use of the Blockchain technology to offer a shared memory between the network's nodes. These nodes are considered as coins in which the ownership transacts between the source nodes and the sink. All the transactions are stored in the Blockchain as a means to share the network's status in real-time. In order to select the optimal path, we introduce a cost function which considers the load density and interferences level at each node. Furthermore, we are taking advantage of the Blockchain security to secure the selected paths in the network. The simulation results have shown that this solution could be applicable and could resolve the issues cited above.