OLT Power Management for Prioritized ONT Recovery
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Solution Overview
Problem
Power fluctuations in passive optical networks (PON) can lead to temporary service disruptions and lengthy restart times for active digital components like RPDs and OLTs, affecting connectivity to multiple subscribers.
Innovation Solution
A power management controller discriminates between power usage types for analog and digital components, managing power fluctuations to minimize service interruptions by prioritizing the activation of higher hierarchical ONTs and utilizing internal data structures for rapid reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power management controller prioritizes activation of higher hierarchical ONTs during power fluctuations, then service continuity is improved, but activation time for lower hierarchical ONTs increases
Solution Approach 1:
The patent segments the ONT activation process into hierarchical levels, where higher hierarchical ONTs (e.g., those serving more subscribers or providing critical services) are activated first during power recovery, and lower hierarchical ONTs are activated subsequently. This segmentation allows the system to prioritize critical services while still eventually restoring all services, resolving the contradiction between service continuity and complete system recovery time.
2Reliability
If power management controller manages power fluctuations for digital components, then service interruptions are reduced, but power management complexity increases
Solution Approach 1:
The patent introduces a power management controller as an intermediary device that sits between the power source and the digital components (RPD, OLT). This controller monitors power conditions, manages power distribution, and coordinates activation sequences, thereby reducing service interruptions without requiring complex modifications to the digital components themselves. The intermediary handles the complexity centrally rather than distributing it across multiple components.
3Speed
If internal data structures are utilized for rapid reconfiguration during power recovery, then activation speed is improved, but data structure complexity increases
Solution Approach 1:
The patent implements internal data structures that pre-organize configuration information for all ONTs before power fluctuations occur. During normal operation, the system maintains ready-to-use configuration data in optimized data structures. When power recovery occurs, the system can rapidly reconfigure ONTs by simply retrieving and applying this pre-prepared data, achieving fast activation without complex real-time processing during the recovery event.
Data Source
AI summary
An optical line terminal that includes an activation mechanism.