Attribute-Based Wavelength Defragmentation for Optical Paths
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Solution Overview
Problem
Existing wavelength defragmentation techniques in optical transmission networks do not consider the attributes of optical paths, leading to potential quality impairment and inefficiencies, particularly for paths requiring high reliability or low latency, and may result in instantaneous interruptions or degraded service quality.
Innovation Solution
A wavelength defragmentation apparatus that includes a storage unit for path information and wavelength allocation management databases, and a functional unit that performs wavelength reallocation based on the attributes of optical paths, such as high reliability, low latency, or normal paths, ensuring operations are tailored to meet specific quality requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wavelength defragmentation is performed uniformly for all optical paths, then wavelength utilization efficiency is improved, but quality of service for paths requiring high reliability or low latency is impaired
Solution Approach 1:
The patent applies local quality by differentiating the defragmentation treatment based on path attributes. High-reliability paths are excluded from defragmentation to maintain service quality, while normal paths undergo defragmentation to improve wavelength utilization. This selective approach allows each path type to receive appropriate treatment according to its specific requirements.
Solution Approach 2:
The patent segments the optical paths into different categories based on their attributes (high-reliability paths, low-latency paths, and normal paths). This segmentation enables the system to apply different defragmentation strategies to different segments, thereby improving overall wavelength utilization while preserving service quality for critical paths.
2Productivity
If wavelength defragmentation is performed on high-reliability paths, then wavelength utilization efficiency is improved, but instantaneous interruption occurs
Solution Approach 1:
The patent extracts high-reliability paths from the defragmentation process entirely. By identifying and separating these critical paths, the system avoids applying defragmentation operations that would cause instantaneous interruption, thereby maintaining service continuity while still improving wavelength utilization for other path types.
3Productivity
If wavelength defragmentation is performed on low-latency paths, then wavelength utilization efficiency is improved, but communication delay increases
Solution Approach 1:
The patent extracts low-latency paths from the defragmentation process to preserve their performance characteristics. By separating these paths, the system avoids rerouting operations that would increase communication delay, while still achieving wavelength utilization improvements through defragmentation of normal paths.
4Ease of operation
If uniform defragmentation is applied to all paths, then implementation simplicity is maintained, but path attribute requirements are not met
Solution Approach 1:
The patent implements local quality by introducing attribute-based classification of paths. The system identifies path attributes (high-reliability, low-latency, normal) and applies corresponding treatment policies, thereby achieving adaptability to different path requirements while maintaining a relatively simple implementation through automated attribute detection and classification.
Data Source
AI summary
A wavelength defragmentation apparatus for executing wavelength reallocation for a path in an optical transmission network, the wavelength defragmentation apparatus comprising: a storage unit that stores a path information database (DB) and a wavelength allocation management DB; and a wavelength defragmentation functional unit that refers to an attribute of a path from the path information DB and performs wavelength reallocation of a path having the attribute by an operation corresponding to the attribute.