| 摘要 |
A system that acquires at least position information, height information and first priority information corresponding to a first wireless communication system (20), and second priority information corresponding to a second wireless communication system (20); determines a use condition for a shared frequency band shared between the first (20) and second (30) wireless communication systems based on the position information, the height information, the first priority information and the second priority information; and outputs a notification based on the determined use condition. |
