| 摘要 |
<p>PROBLEM TO BE SOLVED: To effectively utilize a transmission band with simple control by transmitting data of each slot use situation in every communication station or control station in a data transmission area in a management data transmission area. SOLUTION: A frame synchronous area d1 and a node synchronous area d2 which are a management data transmission area are respectively set in a prescribed period at a front part of one frame period and the residual period is for a data transfer (transmission) area. The data transfer area is provided with a stream packet transmission area d3 and an asynchronous transmission area d4. In the area d1, a frame synchronizing signal is transmitted from a root node. In the area d2, sixteen slots are set and when a transmission line is desired to be secured with a node corresponding to the slots, the node synchronizing signal is transmitted. Slot use situation information is arranged in the node synchronizing signal.</p> |
