Abstract
ABSTRACT To complete more tasks within the finite power supply of sensor devices, the energy of sensor devices must be used efficiently in internet-of-things (IoT) systems. The design of sleep mode is one of the key factors to save energy for the sensor device. The sleep procedure brings about a lower energy consumption and a higher packet delay time. To enhance the lifespan of the sensor devices and to provide reasonable packet delay time in IoT systems, it is important to develop an efficient sleep mode energy-saving scheme for the sensor devices. We analyze the relationship among sleep procedure, energy consumption, lifetime, and packet delay time. A multi-hop-based energy-saving control scheme is designed to deal with the sleep procedure of sensor devices. Based on the multi-hop routing structure, an adaptive decision is made to select the power save class type. It leads to a reasonable energy consumption and a proper packet delay time for the sensor devices. Performance evaluation demonstrates that the proposed energy-saving control scheme trade-offs between the energy consumption and packet delay time such that the purpose of efficient power saving and extending the lifetime of IoT systems can be implemented.
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