| 摘要 |
PURPOSE: A time synchronization method in an analog radio communication system using a CDMA network to which GPS standard time is applied is provided to achieve the exact data transmission and reception between a repeater and each terminal at appointed time, based on GPS standard time provided from a CDMA network. CONSTITUTION: A repeater(20) is composed of a CDMA transceiver part(21), a time creation part(22), a time management part(23), an error compensation part(24), a radio transceiver part(26), and a CPU(25). The CDMA transceiver part(21) receives a reference time from a CDMA network. The time creation part(22) creates time through a clock circuit. The time management part(23) manages the time created at the time creation part(22). The error compensation part(24) analyzes the difference between the received reference time and the created time, compensates the difference, and makes it managed through the time management part(23). The radio transceiver part(26) transmits data to each terminal at the reference time compensated at the error compensation part(24) and managed at the time management part(23). The CPU(25) executes control so that data can be exactly transmitted and received between the repeater(20) and each terminal at exact time.
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