Wavelength Allocation Device Bypass Route Optimization
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Solution Overview
Problem
Optical networks face inefficiencies in wavelength resource usage due to dynamic changes in traffic demand, leading to increased power consumption and decreased communication efficiency as a result of constantly active lasers and inefficient bandwidth allocation, which causes call loss and higher route costs.
Innovation Solution
A method for allocating wavelengths that determines whether the optimum route has free bandwidth and allocates demands to bypass routes when it does not, integrating the degree of influence of sections based on route cost differences to optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wavelength links are dynamically added according to actual use state, then wavelength resource efficiency is improved, but response time increases due to laser adjustment requirements
Solution Approach 1:
The system pre-activates lasers in advance before they are actually needed for wavelength link operation. By anticipating future wavelength link requirements and activating the corresponding lasers beforehand, the system eliminates the time-consuming laser adjustment process when wavelength links need to be established, thus resolving the contradiction between resource efficiency and response time.
2Adaptability or versatility
If all wavelength links are kept active to absorb varying traffic demand, then adaptability is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the operational state of lasers and wavelength links based on actual traffic demand patterns. Instead of keeping all wavelength links continuously active, the system activates only the necessary wavelength links when needed, using predictive mechanisms to prepare in advance. This dynamic approach maintains high adaptability to varying traffic demands while significantly reducing unnecessary power consumption.
3Reliability
If bypass routes are used when optimum route bandwidth is insufficient, then call loss is reduced, but route cost increases
Solution Approach 1:
The system proactively identifies sections where bandwidth may become insufficient and pre-activates additional wavelength links in those sections before congestion occurs. By taking preliminary action to expand capacity in anticipatory of future demand, the system reduces the need to use costly bypass routes, thereby maintaining reliability while minimizing route cost increases.
Data Source
AI summary
A wavelength allocation device includes a decision unit, a determination unit, and an evaluation unit. The decision unit decides whether a wavelength bandwidth of an optimum route for a demand has a free bandwidth to which the demand can be allocated. The determination unit allocates the demand to a bypass route, in the case that the wavelength bandwidth of the optimum route does not have the free bandwidth in the decision unit. The evaluation unit integrates the degree of influence of a section on the optimum route, which becomes a bypass factor, based on a difference in a route cost between the optimum route and the bypass route for the demand.