| 摘要 |
PURPOSE: To maintain excellent radio communication environments by suppressing a radio wave interference when the radio wave interference is between radio zones using the same frequency. CONSTITUTION: When plural radio zones Z1 to Z6 are formed by radio master stations 1 to 6 connected with a branch communication network 10 and plural radio slave stations 11-1n,... 61 to 6n, and the radio master station and each radio slave station of each radio zone receive the communication of other radio zone using the same channel, ID is detected from this reception signal, a pertinent radio master station or radio slave station is specified based on this detected ID and control data for reducing transmission power is transmitted to the radio master station of the pertinent radio zone by the branch communication network. The radio master station or the radio slave station of the pertinent radio zone reduces transmission power based on the received control data. |
