| 摘要 |
PURPOSE:To obtain the digital mobile radio equipment grasped by a mobile station even when channel state is deteriorated in a base station. CONSTITUTION:The digital mobile radio equipment makes incoming communication to a base station by a digital signal and when an error rate of incoming communication is deteriorated, it is applied when the base station has an error rate deterioration transmission section sending an error rate deterioration signal. When the line quality of incoming communication from the mobile station to the base station is deteriorated, the error rate deterioration signal from the base station is received and a control section 8 uses an alarm tone generating section 10 to generate an alarm tone. However, when the reception level of outgoing communication from the base station to the mobiles station is deteriorated, a phase shift, in the phase information by reception data signals sent from a demodulation section 5 to a BER measurement section 6 is increased and the control section 8 uses the alarm tone generating section 10 to generate an alarm tone according to the error rate detection signal detected by the BER measurement section 6. |
