  Industrial automation has created a high demand for private 5G networks, the
deployment of which calls for an efficient and reliable solution to ensure
strict compliance with the regulatory emission limits. While traditional
methods for measuring outdoor interference include collecting real-world data
by walking or driving, the use of unmanned aerial vehicles (UAVs) offers an
attractive alternative due to their flexible mobility and adaptive altitude. As
UAVs perform measurements quickly and semiautomatically, they can potentially
assist in near realtime adjustments of the network configuration and
fine-tuning its parameters, such as antenna settings and transmit power, as
well as help improve indoor connectivity while respecting outdoor emission
constraints. This article offers a firsthand tutorial on using aerial 5G
emission assessment for interference management in nonpublic networks (NPNs) by
reviewing the key challenges of UAV-mounted radio-scanner measurements.
Particularly, we (i) outline the challenges of practical assessment of the
outdoor interference originating from a local indoor 5G network while
discussing regulatory and other related constraints and (ii) address practical
methods and tools while summarizing the recent results of our measurement
campaign. The reported proof of concept confirms that UAV-based systems
represent a promising tool for capturing outdoor interference from private 5G
systems.
