| 摘要 |
PURPOSE:To decrease the channel interference and disturbance by providing a specific radio channel group not used for other zones and a radio channel group having common-use frequency used for the other zones to plural radio zones to use selectively the specific channel group with priority. CONSTITUTION:A multiplex access mobile radio system is provided with service areas 1, 2 covered by radio zone No.1 and radio zone No.2, and base stations 3, 4 for radio zone are arranged respectively to the areas. Further, the specific channels M1, M2 not used for the other zones are provided respectively to the channel groups 5, 6 assigned to the areas 1, 2, and an N channel used to the other zones is assigned. Then the areas 1, 2 use selectively the frequency of the M1 and M2 channels with priority to decrease the simultaneous operating probability of the identical frequency and to decrease the channel interference and disturbance. |
