This option involves communication between a fixed tower and a drone. The drone may be tethered (power and fiber) to make it available for long durations. In this option, we consider that drone is semi-static and can change its height and possibly its horizontal location in a limited capacity. For this scenario, a drone safety pilot is needed to monitor the experiment in the field and intervene if required.
Example experiment: Evaluate RF coverage at different drone heights/locations for different antenna orientations, carry out wideband channel sounding.