| 摘要 |
PURPOSE: To prevent occurrence of collision between systems even when plural systems make communication by providing a channel setting circuit respectively to a transmitter and setting individually a transmission signal carrier frequency with respect to a reference frequency used for frequency hopping according to hopping pattern information. CONSTITUTION: When a mobile station extracts hopping pattern information in a reference frequency (F0 ) by a synchronizing signal extract circuit 6, a hopping pattern generating circuit 8 changes a carrier frequency generated by a carrier generating circuit 12 according to a hopping pattern. Then the circuit 6 extracts group information being information of a mobile station and a stationary station making communication with a same base station in addition to its own mobile station based on a synchronizing signal. Furthermore, a channel setting circuit 14 decides a position to set a channel by itself based on the group information and sets a channel with a prescribed frequency band. Thus, even when a different frequency band is in existence in mixture for each information genre, no collision takes place. |
