| Summary: | The Internet of Things (IoT) provides a beautiful and intelligent landscape for humanity's future. The connections of various sensors and devices in the IoT result in a large consumption of energy. Therefore, research on energy saving and energy efficient methods is imperative. For wireless sensors in an IoT network, sustainable operation in an energy efficient manner is essential due to the limited battery capacity of sensors. This paper attempts to study an IoT network containing wireless sensors and base stations. Wireless power transfer techniques for supplying battery charging are becoming increasingly mature. For wireless sensors, a charging vehicle is responsible for the electrical power supply. To save electrical energy, data transfer of the discussed IoT network scenario is expressed as a minimization problem. A three-stage method is proposed to handle the optimization problem. A restart artificial bee colony (RABC) method is proposed to solve the subproblems of the data transfer model. It is proved that the RABC method asymptotically converges to the optimal solution of the problem. Numerical simulations show that energy consumption in the studied network scenario can be minimized using the proposed method with a good, robust property.
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