Optical Node Transition Logic for Superchannel Sub-Channel Segmentation
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Solution Overview
Problem
Adding or removing channels across an optical medium can cause significant power perturbations, especially when larger channels, referred to as superchannels, are involved, which can disrupt the optical network.
Innovation Solution
Implementing transition logic in optical nodes to divide data channels into sub-channels and manage their sequential addition or removal, using spectrum-based or power-based transitions to minimize power perturbations, such as determining sub-channel counts based on available power margins and ramping transmission rates to maintain optimal power levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a large data channel (superchannel) is added or removed from the optical medium, then the channel capacity is improved, but significant power perturbations occur that disrupt the optical network
Solution Approach 1:
The patent divides a large data channel (superchannel) into multiple smaller sub-channels. Instead of adding or removing the entire superchannel at once, the system sequentially adds or removes individual sub-channels. This segmentation approach maintains network stability by limiting power perturbations to small, manageable levels while still achieving the desired channel capacity changes.
Solution Approach 2:
The patent determines a specific sequential order for adding or removing sub-channels before executing the channel modification. The system calculates the optimal sequence in advance, considering factors like available power margins and perturbation impacts, then follows this predetermined sequence to ensure stable network operation throughout the transition.
2Productivity
If channel modifications are performed quickly, then productivity is improved, but power perturbations increase and disrupt the network
Solution Approach 1:
The patent segments the channel modification process into multiple small steps (adding/removing individual sub-channels) rather than performing a single large modification. This allows the system to achieve the desired channel capacity change through many small, rapid operations that collectively maintain network stability while improving overall productivity.
Solution Approach 2:
The patent implements channel modifications through periodic sequential operations, adding or removing sub-channels one at a time in a predetermined sequence. This periodic approach allows the network to stabilize after each small change while maintaining efficient overall transition speed.
Data Source
AI summary
In some examples, an optical node includes transition logic to: receive an indication of a data channel to be added across an optical medium, the data channel to occupy a portion of an optical spectrum; in response to a receipt of the indication, divide the data channel into a plurality of sub-channels; and sequentially add each of the plurality of sub-channels across the optical medium in a particular order.