| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide improved control against transient status caused by network failure such as fiber cut. <P>SOLUTION: A channel-growth plan selects channels so that the transient statuses which result in the surviving channels in a network failure, such as upstream fiber disconnection, may be minimized and effectively handled by a transient-control technique. The growth plan tries to keep post-transient surviving channel total power gain equal to the pre-transient total power gain. As an alternative example, the growth plan tries to distribute the surviving channels uniformly over the pre-transient channel frequency range. Other manifestations are to keep (1) the average power of the surviving channels substantially equal to the average power of the pre-transient channels, or (2) the average power of the post-transient surviving channels substantially equal to the power level of a specified channel. The low-cost, high-performance and effective hybrid channel-growth plan is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
