An Energy-Efficient Fuzzy Logic-based Fault-Tolerant Routing Protocol for Wireless Sensor Networks

Routing with energy consideration has paid enormous attention in the field of wireless sensor networks (WSNs). Aiming at maximizing network lifetime in WSNs, most studies focus on min-imizing energy consumption. Energy is consumed by sensor nodes to perform three important functions such as data sensing, transmitting, and relaying. Also, event-driven WSN applications require minimum end-to-end delay and medium access delay. This paper proposes an energy-efficient fuzzy logic-based fault-tolerant routing protocol (EEFRP) for routing in WSN and min-imizing the energy consumption to a large extent. EEFRP takes two important parameters “resid-ual energy” and “hop-count” into consideration. Simulation results demonstrated that the pro-posed algorithm could achieve better performance in comparison with IEEE 802.15.4 original protocol in terms of end-to-end delay, medium access delay, and fault tolerance, particularly in node failure cases.