Reliable and Energy-Efficient Data Forwarding in Industrial Wireless Sensor Networks

Reliable and energy-efficient data forwarding is significant for industrial Internet of Things (IoT) applications. A routing protocol called Network Coding and Power Control based Routing (NCPCR) is presented for unreliable wireless networks to save energy. The proposed NCPCR incorporates network coding mechanism and considers dynamic transmit power and the number of packet transmissions. In addition to the optimal transmit power, we derive the probability of successful decoding an encoded packet to achieve the network coding gain. The proposed NCPCR adopts the derived network coding gain in making intelligent decisions on whether to apply network coding or not such that energy consumption is significantly reduced. Simulation results show that the proposed NCPCR outperforms existing routing protocols in terms of lower energy consumption.