| 摘要 |
PURPOSE:To prevent a transmission efficiency from being deteriorated even when the frame period is reduced by applying multiprocessing to a radio frame, making an additional bit transmission channel independent attended to each communication channel and sending an additional bit transmission signal for each talking channel in the unit of multi-frame. CONSTITUTION:A radio frame is formed to be a unit frame comprising a synchronizing signal Fi, a call connection control signal C channel, talking channels CH1-CHN and one additional bit transmission channel HKi. The signal Fi is of multi-frame structure in which unit frame time is T' and a period is N. As a result, additional bit transmission channels HK1-HKN for the talking channels CH1-CHN in the N multiframe period are ensured. Through the constitution above, since one additional bit transmission channel only is provided to N-set of the talking channels CH1-CHN from the standpoint of the unit frame, the transmission efficiency in the talking channel is improved. |
