Optical Path Routing With Setting-Time-Aware Frequency Allocation
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Solution Overview
Problem
Optical path design devices in existing networks fail to consider the time required for setting parameters in communication devices, leading to a mismatch between designed optical paths and temporal demands.
Innovation Solution
An optical path design device that includes a search unit to find route possibilities, a time derivation unit to determine available communication times for frequency slots, and a design unit to select routes and frequencies based on these times, ensuring timely parameter setting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the optical path design device quickly allocates a new optical path to increased demand, then the responsiveness to traffic changes is improved, but the temporal constraint of the demand cannot be satisfied because the setting time is not considered
Solution Approach 1:
The patent applies preliminary action by calculating and reserving the setting time in advance when designing the optical path. The design device determines the time required for communication devices to reflect parameters, and this time is incorporated into the overall path design timeline. By performing this time calculation beforehand and including it in the path allocation decision, the system ensures that both quick allocation and temporal constraints are satisfied without conflict.
2Reliability
If the optical path design device considers the setting time in path design, then the temporal constraint is satisfied, but the complexity of the design process increases
Solution Approach 1:
The patent introduces an intermediary element - a setting time calculation unit - that specifically handles the time required for parameter reflection in communication devices. This unit acts as a mediator between the path design process and the temporal constraints, isolating the complexity of time management into a dedicated component. By doing so, the main path design logic remains relatively simple while the temporal constraint satisfaction is handled by this specialized intermediary unit.
Data Source
AI summary
An optical path design device includes: a search unit configured to search for one or more route possibilities from a start point to an end point in an optical network including one or more transmission paths as links and a plurality of node devices as nodes on the basis of topology information of the optical network, information on the start point, and information on the end point; a time derivation unit configured to derive available time which is time at which a frequency band including one or more frequency slots becomes available for communication for each of the transmission paths or the node devices included in the route; and a design unit configured to select the route from the one or more route possibilities that have been searched for on the basis of the available time derived for each of the transmission paths or the node devices and select a frequency band of an optical signal to be transmitted through an optical path in the selected route.