| 摘要 |
PURPOSE:To make the number of a two-way communication for a time slot into 1 or above by executing the incoming communication and the outgoing communication of the two-way communication by using a loop transmission line where a signal is propagated mutually in the reverse direction. CONSTITUTION:Node stations (NS) 1-6 and a control station (SS) 20 are connected with transmission lines 11 and 12. When between NS1 and 2, the two-way communication is executed by a time slot (TS) 3 of the transmission lines 11 and 12, the table of the SS 20 is as shown in the figure. At such a time, when a communication request occurs from an NS3 to 5, the SS 20 refers to the above-mentioned table, links 3-4 and 4-5 between the NS 3 and 5 into 1 at the TS 3, the TS3 is used for the NS 3 and the TS3 of the transmission line 12 is used for the NS 5. Further, when the communication request is executed from the NS 6 to 5, the SS 20 makes a link 5-6 of the TS 3 into 1, the TS3 of the transmission line 11 is used for the NS 5 and the TS3 of the transmission line 12 is used for the NS6. As such a result, by using the TS3 of the transmission lines 11 and 12, three two-way communications are supplied. |
