ONT Rogue Behavior Regulation via Autonomous Transmitter Disable
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Solution Overview
Problem
Existing methods fail to effectively detect and regulate rogue optical network termination (ONT) devices in passive optical networks (PONs), which disrupt communications by transmitting at incorrect times, due to limitations in monitoring techniques and communication with other network components.
Innovation Solution
The method involves monitoring optical transmitter output indicators during designated windows, setting a suspect rogue flag if thresholds are exceeded, and autonomously disabling the transmitter based on successive readings, with the option to communicate with the OLT if necessary, to minimize network disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing monitoring techniques are used to detect rogue ONT devices, then network communication can be maintained, but rogue behavior cannot be effectively detected and regulated
Solution Approach 1:
The patent implements preliminary action by establishing monitoring windows before rogue behavior fully disrupts the network. The system proactively monitors optical transmitter output during designated time periods and sets suspect rogue flags when threshold violations occur, enabling early detection and regulation of potential rogue ONT devices before they cause widespread communication disruptions.
Solution Approach 2:
The patent implements feedback by continuously monitoring optical transmitter output indicators during monitoring windows and comparing readings against predetermined thresholds. When threshold violations are detected, the system sets suspect rogue flags in registers and can autonomously disable transmitters, creating a closed-loop feedback mechanism that detects and responds to rogue behavior in real-time while maintaining network stability.
2Measurement precision
If communication with OLT is required for rogue ONT detection, then detection accuracy may improve, but network disruption increases
Solution Approach 1:
The patent implements self-service by enabling the ONT to autonomously detect rogue behavior through local monitoring of its own optical transmitter output indicators. The system reads suspect rogue flags from internal registers and independently determines whether to disable transmitters without requiring continuous communication with the OLT, thereby maintaining detection accuracy while minimizing network communication disruption and loss of time.
3Extent of automation
If autonomous regulation is implemented in ONT, then response time to rogue behavior increases, but network component complexity increases
Solution Approach 1:
The patent implements segmentation by dividing the autonomous regulation function into distinct modular components: monitoring windows that capture optical transmitter output indicators, registers that store suspect rogue flags, and control logic that reads flags and determines transmitter disablement. This segmented architecture enables autonomous regulation capability while organizing complexity into manageable, separable functional blocks that can be implemented efficiently.
Data Source
AI summary
A method and apparatus for regulating rogue behavior in optical transmission devices. The apparatus, for example, may be implemented in one or more of the ONTs in a PON. The ONT includes an optical transmitter that may be disabled by a command generated by the ONT itself if rogue behavior is detected or suspected. To detect rogue behavior, at least one output indictor, such as LBC or MPC, is monitored during one or more monitoring windows. If monitoring indicates that the optical transmitter is transmitting more than a pre-determined threshold, a suspect rogue flag is set, for example in an I2C register. The register is read, preferably a number of successive times, and a determination is made whether to disable the optical transmitter. In some embodiments, the OLT is queried as part of this determination. The disability may be permanent, until a manual service operation, for example, or temporary.