Optical Signal Routing via Noise Tolerance Metrics
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Solution Overview
Problem
Optical networks face inefficiencies due to the premature use of high-quality optical links for signals with lower noise tolerance, leading to capacity issues for signals requiring stricter noise tolerance, as existing routing methods prioritize links based on general fiber characteristics rather than signal-specific noise tolerance.
Innovation Solution
A method that adjusts routing metrics based on the signal noise tolerance of optical signals, allowing lower quality links to be selected for routing, thereby preserving high-quality links for future use and optimizing network capacity utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If routing algorithms prioritize high-quality optical links for all signals, then signal transmission quality is improved, but network capacity utilization deteriorates due to premature exhaustion of high-quality link resources
Solution Approach 1:
The patent changes the routing metric parameter from static (based only on fiber characteristics) to dynamic (adjusted according to signal noise tolerance). This allows the routing algorithm to adaptively select appropriate links for different signal types, preserving high-quality links for signals that require them while utilizing lower-quality links for tolerant signals, thus resolving the contradiction between transmission quality and capacity utilization
Solution Approach 2:
The routing metric is made dynamic by adjusting it based on the specific noise tolerance characteristics of each optical signal. This dynamic adjustment enables the network to flexibly allocate link resources according to actual signal requirements, preventing premature exhaustion of high-quality links while maintaining adequate transmission quality for all signals
2Ease of operation
If general fiber characteristics are used for routing decisions, then routing simplicity is maintained, but link resource optimization deteriorates due to inability to match link quality with signal requirements
Solution Approach 1:
The patent modifies the routing metric parameter to incorporate signal noise tolerance information, transforming it from a static value based solely on fiber characteristics to a dynamic value that adapts to signal-specific requirements. This enables optimized matching of link quality to signal needs without significantly complicating the routing process
Solution Approach 2:
The system performs preliminary assessment of signal noise tolerance characteristics before routing decisions are made. By obtaining and utilizing this information in advance, the routing algorithm can appropriately select links without requiring complex real-time adjustments, thus maintaining operational simplicity while achieving better resource optimization
Data Source
AI summary
A method may include obtaining a topology of an optical network. The topology may indicate multiple optical links within the optical network. The method may also include obtaining a routing metric for each of the optical links. The routing metric may be used in selecting routes through the optical network along the multiple optical links. The method may further include obtaining a signal noise tolerance of an optical signal to be routed through the optical network and adjusting routing metrics of one or more of the multiple optical links based on the signal noise tolerance of the optical signal. The method may also include after the routing metrics of the one or more of the multiple optical links are adjusted, determining a route for the optical signal through the optical network along two or more of the multiple optical links based on the routing metrics of the multiple optical links.