| 摘要 |
<P>PROBLEM TO BE SOLVED: To make effective use of a transmission band by considering a temporal fluctuation characteristic of a used amount of upstream transmission band in an optical communication system. <P>SOLUTION: A fluctuation characteristic learning part 12 of the usage of the upstream transmission band monitors the used amount of the upstream transmission band every slave station or path connected to 0-system and 1-system transmission paths, and learns the temporal fluctuation characteristics of the usage of the upstream transmission band every slave station or path. On the basis of the learning results of the learning part 12, a transmission path setting selecting part 7 changes the setting of the transmission path so that an increase in the usage of upstream transmission band does not concentrate on one of the systems. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
