Network Management Device Path Overlap Determination
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Solution Overview
Problem
Current network management systems face challenges in accurately determining path settings due to individual differences in transmission characteristics of transmission lines and devices, especially when devices from different vendors are involved, leading to difficulties in achieving optimal network performance.
Innovation Solution
A network management device that stores the change rate of transmission quality with respect to power and uses this data to determine whether to set a new path overlapping with an existing path, allowing for high-accuracy path setting by assessing the quality margin and adjusting power levels to maintain target transmission quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If transmission characteristic data for predetermined combinations is stored in the database, then the device complexity is reduced, but the measurement precision and reliability of transmission quality estimation deteriorate due to individual differences in transmission lines and devices from different vendors
Solution Approach 1:
The patent changes the parameter stored in the database from absolute transmission characteristic values to a relative change rate (dQ/dP). This allows the database to maintain a compact structure while adapting to different transmission scenarios by applying the change rate to calculate quality under varying power conditions, thereby resolving the contradiction between database simplicity and estimation accuracy.
2Reliability
If feedback control is applied to suppress transmission characteristic differences, then the reliability of transmission quality is improved, but the device complexity increases due to additional control mechanisms
Solution Approach 1:
The patent implements feedback control by measuring the actual transmission quality (Q value) and comparing it with the target quality, then adjusting the power level based on the stored change rate (dQ/dP). This feedback mechanism ensures reliable transmission quality while maintaining relatively simple device complexity by using a straightforward measurement-adjustment loop.
3Ease of operation
If path settings are determined based on predetermined transmission characteristic data, then the ease of operation is improved, but the productivity of network configuration decreases due to inability to adapt to individual differences
Solution Approach 1:
The patent enables adaptive path setting by storing and utilizing the change rate parameter (dQ/dP) that reflects actual transmission characteristics. This allows the system to maintain easy operation through automated path determination while improving productivity by adapting to individual line and device characteristics, thus achieving both goals simultaneously.
Data Source
AI summary
There is provided a network management device including a memory in which a change rate of a transmission quality of a first optical signal to be transmitted on a first path with respect to a power of the first optical signal is stored, and a processor coupled to the memory and the processor configured to determine, based on the change rate, whether to set a second path on which a second optical signal transmits to overlap with at least a portion of a route of the first path.