We present a transmission scheme aimed at integrating wake-up radios (WuR) into LoRa sensor networks featuring UAV-mounted gateways. The sensors are informed of the UAV's arrival with the help of WuR, followed by sensor-to-UAV data transfer with frequency and spreading-factor hopping. The proposed scheme provides significant energy savings at the sensors while maintaining similar reliability levels compared to a scheme in which Class B LoRa beacons are used to perfectly synchronize the sensors with the UAV's data-collection window.

翻译：我们提出了一种传输方案，旨在将唤醒无线电（WuR）集成到配备无人机网关的LoRa传感器网络中。传感器借助WuR获知无人机到达信息，随后通过频率与扩频因子跳变实现传感器至无人机的数据传输。与采用Class B LoRa信标以完美同步传感器与无人机数据采集窗口的方案相比，所提方案在维持相近可靠性水平的同时，显著降低了传感器的能耗。