| 摘要 |
PURPOSE:To improve the cost performance of an earth station, by attaining an effective application of a circuit by transmitting also the data except that on the control information with use of a control circuit. CONSTITUTION:Circuits 1-5 having split frequencies are used when a data communication is carried out between a satellite, etc. and an earth station by a frequency split multiplexing system. The earth stations are all connected to the circuit 1 with multiple access in order to enable the transfer of data A, B... on the circuit allotment controlling information and those except the control information. In case a large quantity of data to be transmitted to a station C is produced on the midway, a circuit request is produced to transmit a large quantity of data C through another circuit 3. Thus an effective application is ensured for the circuits 1-5, and the cost performance is improved for the earth station. |
