Optical Synchronous Digital Hierarchy Service Path Adjustment
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Solution Overview
Problem
In optical synchronous digital hierarchy networks, the service instant-interrupt time exceeds 50ms when using multi-time-division modules, failing to meet the requirement for automatic protection switching due to the inability of traditional methods to achieve real-time full cross connections without service interruption.
Innovation Solution
A method and apparatus that adjust the service path by configuring an input time-slot space-division cross path and a time-division cross path in a space-division module, followed by configuring an output time-slot space-division cross path and deleting the original cross path, reducing service interruption time by only adjusting the output time-slot space-division cross path during switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional service configuration method is used in multi-time-division modules, then service switching and adjustment can be performed, but service instant-interrupt time exceeds 50ms causing user service interruption
Solution Approach 1:
The patent applies preliminary action by pre-configuring the input time-slot space-division cross path and time-division cross path in the new time-division module before switching occurs. This allows the service path to be prepared in advance, so that when switching is triggered, only the output time-slot space-division cross path needs to be adjusted, reducing the actual service interruption time to less than 50ms.
2Productivity
If multi-time-division modules are applied to meet high-capacity user service needs, then service capacity is improved, but traditional configuration methods cannot achieve real full cross without service interruption
Solution Approach 1:
The patent enables real full cross capability in multi-time-division modules by pre-configuring service paths before switching. The input time-slot space-division cross path and time-division cross path are configured in advance in the target time-division module, ensuring that high-capacity service switching can be performed without service interruption, thus maintaining both productivity and reliability.
3Ease of operation
If service path adjustment is performed by configuring all cross paths simultaneously, then complete service switching is achieved, but service instant-interrupt time is greatly extended
Solution Approach 1:
The patent segments the service path configuration into distinct phases: pre-configuration phase (input time-slot space-division cross path and time-division cross path) and switching phase (output time-slot space-division cross path). This segmentation allows most configuration to be done in advance without affecting service, and only the critical output path adjustment occurs during switching, reducing interruption time while maintaining complete service adjustment capability.
Data Source
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AI summary
The present invention discloses a method and an apparatus for adjusting a service of optical synchronous digital hierarchy network, and the method for adjusting a service is used to adjust the cross path among the space-division module and at least two time-division modules, which comprises: at first configuring the input time-slot space-division cross path to the time-division module after adjustment in space-division module and the time-division cross path of the time-division module after adjustment; and configuring the output time-slot space-division cross path from the time-division module after adjustment in space-division module; deleting the original cross path formed by the time-division module before adjustment. The apparatus comprises: a first configuration unit used to configure the input time-slot space-division cross path to the time-division module after adjustment in space-division module and the time-division cross path of the time-division module after adjustment; a second configuration unit configuring the output time-slot space-division cross path from the time-division module after adjustment in the space-division module; deleting the original cross path formed by the time-division module before adjustment. The present invention can reduce the service instant-interrupt time to be less than 50ms.