| 摘要 |
PURPOSE:To respectively connect a vehicle terminal and a portable terminal to a proper radio station by selecting and connecting either of a radio zone deviding a service area in accordance with the condition of a mobile terminal or a radio subzone deviding further this zone. CONSTITUTION:The control station 8 of a control zone 1 assigning an area discriminating code, the radio base station 3 of a radio zone 2 deviding plurally the zone 1 in a star shape and the subradio station 6 of a radio subzone 5 deviding plurally the zone 2 further are connected and linked. The vehicle terminal 4 selects and connects a zone 3, a portable terminal 7 selects and connects a zone 5 and a radio calling is executed. By this zone deviding and finely deviding system, the different vehicle terminal and different portable terminal are respectively connected to a proper radio station and a satisfactory radio calling can be realized. |
