Energy-efficient operation of LoRaWAN network server with immediate-acknowledgment for shipboard IoT applications
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As data-driven ship management requires shipboard data, the need for Internet of Things (IoT) technology to collect, transmit, and utilize various data types on ships continues to increase. When considering IoT onboard ships, technologies that improve the energy efficiency of deployed wireless devices and ensure stable communication are essential to sustainably collect various types of infor-mation and ensure the reliability of the acquired information. The long-range wide-area network (LoRaWAN) protocol is a favorable technology for shipboard IoT networking, supporting long-distance communication suitable for IoT applications. To apply the Lo-RaWAN protocol to shipboard IoT, energy-efficient operation is essential to ensure the continuity of data collection and the reliability of the collected data. To support the energy-efficient operation of the LoRaWAN protocol, the application of the Immediate-acknowl-edgment policy is proposed, and the energy-saving effect of the deployed wireless devices through the application of the acknowledg-ment policy is confirmed. However, the load of the LoRaWAN Network server operating the Immediate-acknowledgment—which underlines the energy-saving of wireless devices—should also be considered. Therefore, this study analyzes the energy consumption of the network server side of a LoRaWAN system by applying an acknowledgment policy and proposes an energy-efficient operation method.
Abstract
As data-driven ship management requires shipboard data, the need for Internet of Things (IoT) technology to collect, transmit, and utilize various data types on ships continues to increase. When considering IoT onboard ships, technologies that improve the energy efficiency of deployed wireless devices and ensure stable communication are essential to sustainably collect various types of infor-mation and ensure the reliability of the acquired information. The long-range wide-area network (LoRaWAN) protocol is a favorable technology for shipboard IoT networking, supporting long-distance communication suitable for IoT applications. To apply the Lo-RaWAN protocol to shipboard IoT, energy-efficient operation is essential to ensure the continuity of data collection and the reliability of the collected data. To support the energy-efficient operation of the LoRaWAN protocol, the application of the Immediate-acknowl-edgment policy is proposed, and the energy-saving effect of the deployed wireless devices through the application of the acknowledg-ment policy is confirmed. However, the load of the LoRaWAN Network server operating the Immediate-acknowledgment—which underlines the energy-saving of wireless devices—should also be considered. Therefore, this study analyzes the energy consumption of the network server side of a LoRaWAN system by applying an acknowledgment policy and proposes an energy-efficient operation method.