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Smart Energy Harvesting Routing Protocol for WSN based E-Health Systems

This paper proposes a novel routing protocol called Smart Energy Harvesting Routing Protocol (SEHR) for data transmission in Wireless Sensor Network based e-Health systems (WSNEH). WSNEH is a sophisticated network environment where multiple types of mobile sensors are involved, employing different forms of data transmission without a pre-defined infrastructure, constrained by various power supplies. Given the fast developing techniques for ambient energy harvesting in WSN, the proposed SEHR route selection scheme operates alongside flexible energy harvesting resources, estimating real-time node energy consumption, predicting a node's own energy harvesting capability before a route is set up. Diverse strategies are designed for different data types, as appropriate. Overall SEHR aims to prolong whole network's lifetime. Simulation results show that SEHR greatly outperforms other routing protocols in the challenging WSNEH environment.