| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a technique capable of effectively utilizing a radio resource.SOLUTION: A TDD frame used in a radio communication system 100 comprises a switching sub-frame which is a sub-frame used for transmitting a known signal in another radio communication system different from the radio communication system 100. If a base station of the other radio communication system exists in the vicinity of a base station 1, communication using the switching sub-frame is not performed between the base station 1 and a communication terminal 2. On the other hand, if the base station of the other radio communication system does not exist in the vicinity of the base station 1, the communication using the switching sub-frame is performed between the base station 1 and the communication terminal 2.</p> |
