Optical Path Setting Device for Terrestrial Submarine Integration
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Solution Overview
Problem
In existing optical communication systems, the connection of terrestrial and submarine systems by a coarse-granularity switching device leads to increased path allocation failure rates due to insufficient available wavelength slots and transmission characteristic degradation, resulting in reduced system efficiency and higher operational costs.
Innovation Solution
An optical path setting device that calculates inter-endpoint transmission characteristics and determines a required wavelength bandwidth to allocate optical paths on a common wavelength band shared by both systems, ensuring optimal path allocation and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terrestrial and submarine optical communication systems are connected by a coarse-granularity switching device, then system integration is achieved, but path allocation failure rate increases due to insufficient available wavelength slots
Solution Approach 1:
The patent merges terrestrial and submarine optical communication systems into an integrated system, allowing shared wavelength resources and coordinated path allocation. The optical path setting device in each system communicates with the other to allocate wavelength slots from the combined pool of available slots across both systems, increasing the total number of allocable wavelength slots and reducing path allocation failures.
Solution Approach 2:
The patent creates a universal wavelength allocation mechanism that operates across both terrestrial and submarine systems. The optical path setting devices can allocate wavelength slots from either system depending on availability, making the wavelength resources universal and interchangeable between the two previously separate systems.
2Adaptability or versatility
If terrestrial and submarine optical communication systems are connected by a coarse-granularity switching device, then system integration is achieved, but transmission characteristic degradation occurs
Solution Approach 1:
The patent performs preliminary calculation of inter-endpoint transmission characteristics before establishing optical paths through the integrated system. The optical path setting device calculates the cumulative transmission characteristics including degradation from the coarse-granularity switching device, and uses this information to make informed wavelength slot allocations that compensate for expected degradation, thereby maintaining transmission quality.
3Ease of operation
If independent optical path setting devices are used in terrestrial and submarine systems, then system autonomy is maintained, but wavelength resource utilization is inefficient
Solution Approach 1:
The patent implements a feedback mechanism where optical path setting devices in both terrestrial and submarine systems exchange information about available wavelength slots and path allocation status. Each device receives feedback from the other system regarding wavelength availability and adjusts its allocation decisions accordingly, enabling efficient utilization of combined wavelength resources while maintaining operational autonomy through decentralized decision-making based on shared information.
Data Source
AI summary
This optical path setting device comprises: a transmission characteristic calculating means for calculating an inter-endpoint transmission characteristic that is a characteristic for transmission between endpoints of an optical path accommodating traffic in a plurality of optical communication systems; a required wavelength bandwidth determining means for determining a required wavelength bandwidth that is a wavelength bandwidth meeting an arrival performance of the optical path on the basis of the inter-endpoint transmission characteristic; and an accommodating wavelength band determining means for determining, as an accommodating wavelength band for accommodating the optical path, a common wavelength band that is a wavelength band where an optical path having the required wavelength bandwidth can be allocated, and that is common to the plurality of optical communication systems.