| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress fluctuation in an uninterruptible transmission system.SOLUTION: An uninterruptible transmission system 100 includes: a transmission-side communication device 10 for adding a sequence number to a frame to be transmitted and for duplicating the frame to transmit to an east-side route 15 and a west-side route 16; and a reception-side communication device 12 for selecting one frame out of frames, received from the east-side route 15 and the west-side route 16 and having an identical sequence number, to output to the subsequent stage. The reception-side communication device 12 measures an arrival time difference between a sequence (1) frame arriving earlier from one route and a sequence (1) frame arriving later from the another route. After the lapse of a time larger than the arrival time difference after the arrival of the sequence (1) frame arriving later, the reception-side communication device 12 selects one frame out of received frames, to output to an Ethernet network 17.</p> |
