Decentralized Optical Fiber Continuity Verification
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Solution Overview
Problem
Existing optical networks face challenges in automatically verifying the continuity of optical fibers between nodes without human intervention, which is essential for fault detection and network reliability, but current methods are often centralized, scalable, and require negotiation between controllers.
Innovation Solution
The implementation of a method for negotiation-less optical fiber continuity verification in optical networks, where optical nodes autonomously verify fiber continuity by discovering and synchronizing their local topologies through a management network, using a shared verification sequencing method to assign fibers to verification slots without the need for controller negotiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized controller negotiation is used for fiber continuity verification, then verification coordination is achieved, but system complexity increases and single-point failure risk increases
Solution Approach 1:
The patent segments the centralized verification function into distributed autonomous operations at each optical node. Each node independently performs fiber continuity verification without requiring centralized controller coordination, thereby eliminating the single-point failure risk associated with centralized controllers while reducing system complexity.
Solution Approach 2:
Optical nodes perform self-verification of fiber continuity autonomously using local topology information and verification sequences. Each node generates and executes verification tasks independently, eliminating the need for external controller negotiation and improving reliability through decentralized operation.
2Adaptability or versatility
If autonomous verification is implemented at each optical node, then scalability improves and single-point failure risk reduces, but coordination between nodes becomes challenging
Solution Approach 1:
The patent implements preliminary topology discovery and verification sequence generation at each optical node before actual fiber continuity verification. Nodes pre-synchronize their verification schedules and sequences based on local topology information, enabling autonomous operation while maintaining coordination without real-time negotiation during verification execution.
Solution Approach 2:
The patent uses verification sequences and slot assignments as intermediary mechanisms to coordinate autonomous operations between nodes. These pre-established sequences act as mediators that enable synchronized verification across the network without requiring direct negotiation between nodes during operation, thus maintaining scalability while managing coordination complexity.
3Productivity
If negotiation between controllers is required for fiber verification, then centralized control is maintained, but verification time increases and productivity decreases
Solution Approach 1:
Optical nodes autonomously generate and execute fiber continuity verification tasks using locally stored topology information and pre-assigned verification sequences. This eliminates the time-consuming negotiation process between controllers while maintaining verification coordination, thereby significantly improving verification speed and productivity.
Solution Approach 2:
Topology discovery and verification sequence assignment are performed in advance, allowing nodes to immediately execute verification tasks without real-time negotiation. This preliminary preparation eliminates idle negotiation time during actual verification operations, directly improving verification productivity.
Data Source
AI summary
An optical network includes an arrangement of optical nodes. An optical node of the arrangement, and corresponding method, perform optical connectivity discovery and negotiation-less optical fiber continuity verification in the optical network. An overall topology of optical connectivity provisioned for the arrangement is discovered by the optical node based on messages received from a management network communicatively coupling the optical nodes to each other. The optical node synchronizes, temporally and sequentially, with the other optical nodes based on the messages received, assigns fiber of the overall topology, based on a verification sequencing method, to verification slots of a verification sequence, and verifies continuity of fiber according to the verification slots of the verification sequence. The discovery, synchronization, and assignment operations enable the optical node and peer node to perform the optical fiber continuity verification in a symmetric, decentralized, and negotiation-less manner.