Measurement of LoRa signal propagation in urban areas utilizing aerial gateway and ground gateway

In this study, a comprehensive measurement of a large-scale LoRaWAN network in an urban environment was conducted. Specifically, 28 LoRaWAN end-devices have been deployed in various locations, covering outdoor, indoor, and multiple floors of buildings. Moreover, an aerial gateway mounted on the DJI Mavic 3, along with three ground gateways, has been deployed for data collection. The performance of aerial gateway at altitudes of 50m, 100m, and 150m was also tested. Finally, a total of 28,576 raw data entries were obtained, including valuable information like RSSI, SNR, and timestamps.本研究针对城市环境中的大规模LoRaWAN网络开展了全面测量工作。具体而言，研究团队在户外、室内及建筑多层等各类场景部署了28台LoRaWAN终端设备。此外，部署了挂载于大疆御3（DJI Mavic 3）的空中网关与三台地面网关用于数据采集；同时测试了该空中网关在50米、100米及150米高度下的性能表现。最终共获取到28576条原始数据条目，包含接收信号强度指示（RSSI, Received Signal Strength Indicator）、信噪比（SNR, Signal-to-Noise Ratio）以及时间戳等有效信息。