LoRa technology is widely used in the Internet of things network applications. It enables low-volume data transmission via small wireless devices. The principle of LoRa networks (an LPWAN technology: Low Power Wide Area Network) is to transmit data by air from sensors with a short transmission range, about over ten kilometers. These sensors should not be powered by electricity, and batteries power them. Hospital visits are inevitable, but current advances in communication could reduce the burden on hospitals with remote (from home) treatments using these wireless sensors. Thus, using the LoRaWAN protocol could greatly facilitate patient diagnosis by transmitting data between doctors and patients in real time and with minimal energy consumption. The objective of this work is to set up a multihop IoT network containing a large number of sensors based on LoRa for uplink communication. This work evaluates the energy consumption and the packet delivery rate in the multihop IoT network. The simulation result shows that the proposed approach reduces power consumption by 50% and improves the packet delivery rate by 2% compared to the existing state of the art.

中文翻译：

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用于新兴物联网应用的 LoRa 网络中基于层聚类的多跳上行链路通信方法

LoRa技术广泛应用于物联网网络应用。它可以通过小型无线设备进行小容量数据传输。LoRa网络（一种LPWAN技术：Low Power Wide Area Network）的原理是通过空中传输传感器的数据，传输距离很短，大约十多公里。这些传感器不应该由电力供电，电池为它们供电。去医院就诊是不可避免的，但当前通信的进步可以减轻医院使用这些无线传感器进行远程（在家）治疗的负担。因此，使用 LoRaWAN 协议可以通过在医生和患者之间实时传输数据并以最小的能耗极大地促进患者诊断。这项工作的目标是建立一个包含大量基于 LoRa 的传感器的多跳物联网网络，用于上行链路通信。这项工作评估了多跳物联网网络中的能耗和数据包传递率。仿真结果表明，与现有技术相比，所提出的方法将功耗降低了 50%，并将数据包传送率提高了 2%。