Optical Line Termination Burst Mode Digital Diagnostics

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Solution Overview

Problem

There are no standards for digital diagnostics in burst mode transmission, making it difficult to perform digital diagnostics, monitoring, calibration, and synchronization processes in high-speed optical data transmission networks.

Innovation Solution

An optical line termination system with a digital diagnostic table that includes specific settings for each optical network unit, allowing for optimized digital diagnostics and synchronization of burst mode transmissions by identifying the optical network unit and applying settings from the table for improved sensitivity and accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If burst mode transmission is used to reduce data transmission cost, then transmission cost is reduced, but digital diagnostics capability deteriorates due to lack of standards

Engineering Contradiction:
Improvetransmission costVSAvoiddigital diagnostics capability
Core Design Contradiction:
Loss of energyVSMeasurement precision

Solution Approach 1:

The patent segments the burst mode transmission structure by inserting diagnostic sub-frames between data sub-frames. Each diagnostic sub-frame contains specific diagnostic data that can be independently processed, allowing diagnostics to be performed without interfering with the primary data transmission function. This segmentation enables simultaneous data transmission and diagnostics in the same burst mode channel.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary diagnostic sub-frame structure that mediates between the burst mode transmission protocol and diagnostic requirements. This intermediary structure provides standardized diagnostic data fields that can be processed by existing diagnostic equipment, bridging the gap between cost-effective burst mode transmission and standardized diagnostics capability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If analog-to-digital conversion is used for diagnostics, then digital signal processing is enabled, but transmission efficiency deteriorates due to continuous conversion requirements

Engineering Contradiction:
Improvesignal processing capabilityVSAvoidtransmission efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent implements periodic action by converting analog signals to digital only during specific periodic intervals when diagnostic sub-frames are present in the transmission stream. During data-only sub-frames, analog processing continues without digital conversion overhead. This periodic conversion approach maintains necessary diagnostic capability while minimizing the impact on overall transmission efficiency.

Inventive Principle:
Principle #19Periodic action

Data Source

PatentUS8170414B2Burst mode digital diagnostic and control for passive optical network receiving
Publication Date: 2012.05.01 II VI DELAWARE INC
  • US8170414B2 patent drawing
  • US8170414B2 patent drawing
  • US8170414B2 patent drawing

AI summary

Methods and systems for an optical line termination including instructions stored on a computer-readable medium, the instructions including a digital diagnostic table, and a plurality of entries within the diagnostic table, wherein a first entry is associated with a first optical network unit, the first entry including at least one setting for performing burst mode digital diagnostic processes using a first burst mode transmission received from the first optical network unit.