| 摘要 |
PURPOSE:To prevent occurrence of a fault of channel changeover even when rapid deterioration in communication quality takes place in the micro cell type mobile communication system. CONSTITUTION:A level fluctuation detection circuit 13 measures a reception level fluctuation over a prescribed time, When the measured reception level fluctuation is within a prescribed range, a channel changeover level L is set to a higher level L2 and when an average reception level is suddenly reduced, the channel is switched earlier, When the reception level fluctuation exceeds a prescribed range, the channel changeover level is set to a level L1 lower than the level L2 to continue the communication with a base station. |
