Optical Payload Mapping for Mixed Synchronous and Asynchronous Data

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Solution Overview

Problem

Existing optical transport solutions are unable to combine synchronous and asynchronous data sources, limiting them to either transmitting synchronous or asynchronous data, and fail to synchronize plesiosynchronous data when transmitted with synchronous or asynchronous data.

Innovation Solution

The use of a Generic Mapping Procedure (GMP) to map both synchronous and asynchronous data sources into a single payload, decoupling the clock associated with each data source and enabling their transmission over a coherent optical link by inserting filler data to synchronize the data streams, allowing for the combination of multiple data sources with different bandwidths into a common format.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing optical transport solutions transmit synchronous or asynchronous data separately, then transmission reliability is maintained, but adaptability deteriorates

Engineering Contradiction:

Improveability to combine synchronous and asynchronous data sourcesVSAvoidcomplexity of handling multiple data types

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal mapping mechanism that can handle both synchronous and asynchronous data sources through a single Generic Mapping Procedure (GMP). The system uses a unified frame structure with tributary slots that can accommodate different data types, eliminating the need for separate transmission paths and reducing device complexity while maintaining adaptability

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces an intermediary GMP layer that mediates between synchronous and asynchronous data sources and the optical transport network. This intermediary performs clock decoupling and data synchronization, allowing heterogeneous data sources to be combined without directly interfering with each other's timing characteristics

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If filler data is inserted to synchronize data streams, then synchronization capability is improved, but overhead increases

Engineering Contradiction:

Improvesynchronization capabilityVSAvoidoverhead

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent applies partial action by inserting filler data only when and where needed to achieve synchronization, rather than continuously adding overhead. The GMP monitors data stream timing and selectively inserts filler bytes in specific tributary slots only during synchronization requirements, minimizing unnecessary overhead while maintaining reliable synchronization

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent dynamically changes the timing and positioning parameters of filler data insertion based on the actual synchronization needs of different data sources. The system adjusts the amount and location of filler data in real-time, optimizing the balance between synchronization capability and overhead efficiency

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10979209B1System, method, and apparatus for mapping synchronous and asynchronous data

Publication Date: 2021.04.13 ACACIA TECH INC

AI summary

A method, system, and apparatus for transmitting information over an coherent optical link comprising enabling synchronous and asynchronous data sources to be mapped together into a single payload using a generic mapping system which performs decoupling of a clock from each data source, and mapping data from each data source into a tributary of an oFrame.