| 摘要 |
PURPOSE:To make effective use of a frequency by attaining high-speed data transmission and reception of high quality using a small number of channels, by performing indirect transmission via a circuit control office when a few mobile stations from a network for code transmission. CONSTITUTION:To attain the radio communication of digital codes among several mobile radio stations X1-X6, and X01-X06, one station each for one group is assigned for circuit control station X0 or X01' and the other radio stations X1- X6, and X01-X06 are regarded as subordinate stations to constitute a radio network. When the number of subordinate stations is (n), one of waves of different frequencies f1-fn is assigned to respective radio stations X1-X6, and X01-X06 and when its reception frequency uses one wave of the common frequency (f0 f1- fn) broadcasted from control stations X0 and X01' to perform transmission and reception between radio stations X1-X6, and X01-X06, a telegraphic message with a commercial code and synchronizing code both added is pased through control stations X0 and X01' to attain time-division communication divided into blocks, so that data transmission and reception of high quality can be done at high speed by using a small number of channels. |
