It might not be possible to come to a correct conclusion if a frequency band can be allotted to others in the absence of any necessary KPI. For example, for existing fixed satellite services (space to Earth), by monitoring the radio occupancy ratio on the ground, there might be no room for others. But after clarifying the information of satellite receivers from the database (e.g., the exact locations for a limited number of stations), there might be possibilities for 5G use in specified scenarios.