Event-driven wireless sensor networks based on consensus

Wireless Sensor Networks (WSN) consist of sensor nodes with sensing and communication capabilities. Since sensor nodes are energy constrained and sensor data are subject to several sources of errors, the use of a quorum mechanism to achieve consensus leads to higher data accuracy. In this paper, an Event Clustering Routing Protocol based on Consensus (ECRPC) is proposed for WSN. The main idea of ECRPC is based on: (i) No message will be transmitted to the Base Station (BS) provided that a consensus is reached (ii) A tradeoff is made between the two criteria of residual energy and link cost: in certain cases, we give priority to length relay over the energy or vice versa. Simulation results show that ECRPC protocol significantly prolongs the network survival time.