Optical Fiber Replacement via Blocking Counter Prioritization
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Solution Overview
Problem
Current optical networks face challenges in improving the optical signal noise ratio and reducing costs by gradually replacing standard single-mode optical fibers with ultra-low loss fibers, as existing methods lack an effective selection process based on traffic load distribution and operational status, leading to poor performance and high replacement costs.
Innovation Solution
An optical fiber replacement method that uses a blocking counter and dynamic simulation with an optical signal noise ratio adaptive algorithm to identify and replace links with the greatest blocking value, prioritizing ultra-low loss fibers in critical areas, thereby enhancing network performance while minimizing replacement costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all standard single-mode optical fibers are replaced with ultra-low loss optical fibers in a one-time step, then the optical signal noise ratio is improved and transmission distance is extended, but the replacement cost becomes prohibitively high and the network operation is disrupted
Solution Approach 1:
The patent segments the optical fiber replacement process into multiple phases based on traffic load characteristics. Instead of replacing all fibers simultaneously, the system identifies and replaces fibers in high-traffic segments first (using blocking counter metrics to prioritize links), thereby distributing the replacement cost and operational impact over time while achieving progressive performance improvement.
Solution Approach 2:
The patent implements partial replacement by selecting only the most critical optical fibers for replacement based on blocking counter values and traffic load analysis. Rather than replacing all fibers, the system performs selective replacement on a subset of fibers that provide the maximum performance benefit, thereby reducing replacement cost while still achieving significant optical signal noise ratio improvement.
2Ease of operation
If optical fibers are replaced without selecting based on traffic load distribution and operational status, then the replacement process is simplified, but the network performance improvement is poor and replacement cost is high
Solution Approach 1:
The patent performs preliminary analysis of traffic load distribution and operational status before initiating fiber replacement. The system calculates blocking counters for each link based on historical traffic data and identifies priority links that would benefit most from replacement. This preliminary characterization enables targeted replacement decisions that maximize network performance improvement while avoiding unnecessary replacements.
Solution Approach 2:
The patent implements a feedback mechanism where blocking counter metrics are continuously monitored and used to guide replacement decisions. The system measures network performance metrics (blocking probability, traffic load) before and after replacement, uses this feedback to identify the next priority links for replacement, and iteratively improves network performance through data-driven decision making rather than arbitrary selection.
3Reliability
If ultra-low loss optical fibers with attenuation coefficient closer to theoretical limit are used, then the transmission distance is further extended and performance is maximized, but the production and processing cost increases significantly
Solution Approach 1:
The patent changes the selection parameter from replacing all fibers uniformly to replacing fibers based on blocking counter thresholds. By adjusting the replacement threshold parameter, the system can control the extent of replacement and achieve an optimal balance between transmission distance improvement and production cost. This parameter-based control enables flexible adaptation to different budget constraints and performance requirements.
Data Source
AI summary
An optical fiber replacement method in an optical network is provided. The optical fiber replacement method in the optical network is based on blocking due to an optical signal noise ratio limitation, in which standard single-mode optical fibers in an existing optical network are gradually replaced with ultra-low loss optical fibers. With the optical replacement method in the optical network, performance of the optical network can be improved to the greatest extent while ensuring low replacement cost in a process of gradually replacing the optical fibers.