| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a booster of which propagation delay attended with its relay does not increase a circuit scale of a base station in a digital mobile communication system. SOLUTION: A slave station 20 of the booster 30 of this invention is provided with a base station timing recovery section 22, a delay information notice channel output section 23 and a synthesis section 24. The base station timing recovery section recovers timing signal for frame synchronization from an outgoing signal from a mobile station, the delay information notice channel output section outputs a delay information notice channel output signal denoting a fixed propagation delay time synchronously with the timing signal and the synthesis means synthesizes the delay information signal with the outgoing signal and transmits the resulting signal to the mobile station. The mobile station transmits a transmission signal by quickening the timing signal for the frame synchronization to cancel the fixed propagation delay time at transmission. Thus, the transmission signal from the mobile station of which fixed propagation delay time is cancelled reaches the base station.</p> |
