| 摘要 |
The present invention discloses a capacity expansion method for optical transmission link network without service interruption based on the characteristic of multiplexed segment link protection, which configures the service time slots of new added network units in advance, and rearranges the service of the working channel to the protection channel, then reconfigures the optical fibers of the working channel to the new added network units, thus completes capacity-expansion upgrade in steps. In the whole capacity-expansion process of the working channel, the optical fibers that the protection channel located maintain the connecting type of the original segment all the time. Although there are optical fiber interruption processes during the optical fiber reconfigured period, the service has already rearranged to the protection channel, so the service can' t occur interruption. In addition, the service time slots configuration of the new added network units has been done and transmitted down before the rearrange service begins, thus the service also can't occur interruption after the service rearranged to working channel. Therefore, it is possible to accomplish the capacity expansion for the optical transmission link network without the service interruption using the present invention, and the operational process is simple and effective. ® KIPO & WIPO 2007
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