Optical Network Management Reducing Control Complexity
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Solution Overview
Problem
In optical network systems using a flexible frequency grid, the diversification of optical modulation methods complicates the management and control of optical transmitter and receiver devices, increasing the burden on the optical network management device.
Innovation Solution
An optical network system with an optical network management device that designs optical paths based on traffic demand and an optical node device capable of calculating allocable bandwidth, selecting and setting the desired optical path from candidates that match the design information, simplifying the management and control by reducing the need for managing multiple modulation methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the optical network system supports diversified optical modulation methods to improve optical frequency bandwidth allocation efficiency, then the optical frequency usage efficiency is improved, but the management and control complexity of optical transmitter and receiver devices increases
Solution Approach 1:
The patent introduces a standardized interface between the optical network management device and optical transmitter/receiver devices. This interface acts as an intermediary that abstracts away the complexity of different modulation methods (QPSK, 16QAM, 64QAM, etc.), allowing the management device to allocate optical frequency slots without needing to understand the specific modulation characteristics of each device. The standardized interface handles the complexity internally while presenting a simple, unified control mechanism to the management device.
Solution Approach 2:
The patent changes the management approach from directly controlling modulation-specific parameters to controlling abstracted parameters such as optical frequency slot allocation and bandwidth. By transforming the control parameters from modulation-specific details to standardized resource allocation parameters, the system can support multiple modulation methods without increasing management complexity. The optical transmitter and receiver devices translate these standardized parameters into appropriate modulation settings internally.
2Adaptability or versatility
If multiple optical modulation methods are supported to enable flexible bandwidth allocation, then the adaptability of the optical network system is improved, but the information required for management and control increases
Solution Approach 1:
The patent extracts the modulation method-specific information from the management and control process. Instead of requiring the optical network management device to handle detailed information about each modulation method (QPSK, 16QAM, 64QAM, etc.), the system extracts this information and handles it locally at the optical transmitter and receiver devices. The management device only needs to manage standardized resource allocation parameters, thereby reducing the information burden while maintaining the ability to support multiple modulation methods for flexible bandwidth allocation.
3Measurement precision
If the optical network management device manages detailed modulation method information for each device, then the control precision is improved, but the management burden increases
Solution Approach 1:
The patent creates a universal standardized interface that works across all optical transmitter and receiver devices regardless of their specific modulation capabilities. This universal interface allows the optical network management device to control all devices using the same simple mechanism (optical frequency slot allocation), eliminating the need to manage detailed modulation information for each device individually. The standardized interface maintains control precision by ensuring proper translation between abstract resource allocation and device-specific modulation settings, while significantly reducing the management burden through unification.
Data Source
AI summary
In an optical network system based on a wavelength division multiplexing system using a flexible frequency grid, with the diversification of optical modulation methods, the management burden on an optical network management device increases, and its control becomes complicated; therefore, an optical network system according to an exemplary aspect of the present invention includes an optical network management device configured to receive a traffic demand, design an optical path capable of accommodating the traffic demand, and create optical path design information of a design result; and an optical node device configured to be used for creating the optical path, wherein the optical node device calculates an allocable bandwidth from the optical path design information and optical node device information on a configuration of the optical node device, and the allocable bandwidth is an optical frequency bandwidth of a generable optical path that the optical node device is capable of generating, and the optical network management device sets, from among optical path candidates having the allocable bandwidth, a desired optical path that matches the optical path design information.