Distributed Automatic Power Optimization for WDM Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wavelength division communication systems face challenges in maintaining optimal optical power due to fiber attenuation changes, leading to potential service interruptions and inefficient response times in power regulation, which can burden network management systems.
Innovation Solution
A distributed Automatic Power Optimization (APO) system is implemented, comprising APO modules and a network management system that divide APO links and modules, allowing each module to regulate power attenuation or gain between adjacent stations and report results, with the network management system triggering subsequent links for regulation only after successful adjustments, thereby reducing resource occupation and improving response speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a regular query mechanism is used on the network management system with a short query interval, then the response speed for power changes is improved, but a large number of system resources are occupied causing system crash and low practicability
Solution Approach 1:
The patent divides the APO function into distributed APO modules deployed at different network nodes rather than centralized on the network management system. Each APO module independently monitors and regulates power in its local segment, eliminating the need for frequent centralized queries and reducing system resource occupation while maintaining fast local response speed.
Solution Approach 2:
The APO modules are designed to autonomously monitor optical power levels and automatically adjust attenuators or amplifiers without requiring external queries or intervention. This self-service capability enables immediate local response to power changes while completely eliminating the resource burden on the network management system.
2Device complexity
If a regular query mechanism is used on the network management system with a long query interval, then system resources are preserved, but the response speed for power changes becomes slow resulting in low execution efficiency
Solution Approach 1:
By segmenting the APO function into distributed modules, the system achieves both low resource occupation and high execution efficiency. Each module operates independently with continuous local monitoring, ensuring rapid response to power changes without burdening the network management system.
Solution Approach 2:
The autonomous self-service capability of APO modules enables continuous power monitoring and immediate adjustment without periodic queries. This eliminates the trade-off between query interval, resource usage, and response speed, achieving both low resource occupation and high execution efficiency simultaneously.
3Reliability
If the attenuation of the optical fiber changes due to aging or other factors, then the power budget for system design is affected, but service transmission may be interrupted in severe cases
Solution Approach 1:
Each APO module continuously monitors optical power levels and uses this feedback to automatically adjust attenuators or amplifiers. This closed-loop feedback mechanism compensates for fiber attenuation changes due to aging, maintaining stable service transmission without requiring complex manual power budget calculations or adjustments.
Solution Approach 2:
The APO modules autonomously detect power deviations caused by fiber aging and automatically perform compensation adjustments. This self-service capability maintains service transmission stability while keeping the power regulation mechanism simple and automated, without requiring complex external intervention.
Data Source
AI summary
A distributed Automatic Power Optimization (APO) system and method are provided. The distributed APO system includes: one or more APO modules and a network management system. The one or more APO modules belong to one or more pre-divided APO links. Each APO module in the one or more APO modules belongs to only one APO link. The APO module is configured to, when the APO link to which the APO module belongs is triggered to perform power regulation, regulate a power attenuation or a gain between the two adjacent stations corresponding to the APO module and report a regulation result. The network management system is configured to, when learning that all of one or more APO modules in one APO link are successful in regulation, if there is a next APO link of the APO link, trigger the next APO link of the APO link to perform power regulation.