Optical Fiber Coupling Reconfiguration for XGS-PON Selection

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Solution Overview

Problem

Existing optical network units (ONUs) are often pre-configured to a single protocol (XG-PON or XGS-PON) and may automatically integrate networks using the first detected protocol, which is not necessarily the most efficient, leading to suboptimal performance in hybrid networks.

Innovation Solution

A method and device for an optical fiber coupling device to detect and adapt to the most efficient protocol (XGS-PON) by reading Alloc-Id fields with identifiers 1022 and 1023, allowing it to reconfigure itself dynamically based on the network's protocol support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the ONU coupling device is pre-configured to a single protocol at the factory, then the device complexity is reduced and manufacturing is simplified, but the adaptability to different network protocols deteriorates

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidprotocol compatibility
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The ONU coupling device transitions from a static pre-configured state to a dynamic self-configuration state by detecting protocol identifiers (1022 for XG-PON, 1023 for XGS-PON) during network integration and automatically selecting the appropriate protocol configuration, enabling the device to adapt its operating parameters based on the detected network environment

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The ONU coupling device performs self-configuration by autonomously detecting the protocol type through reference information fields in synchronization messages and automatically selecting the appropriate configuration without requiring manual intervention or external configuration, thereby simplifying the deployment process while maintaining protocol adaptability

Inventive Principle:
Principle #25Self-service

2Ease of operation

If the ONU coupling device automatically integrates using the first detected protocol, then the ease of operation is improved, but the performance optimality deteriorates

Engineering Contradiction:
Improveautomatic integrationVSAvoiddata transmission speed
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The ONU coupling device implements a feedback mechanism by monitoring the Alloc-Id field in downstream synchronization messages to detect whether the network operates on XG-PON (identifier 1022) or XGS-PON (identifier 1023), then uses this feedback information to automatically select the appropriate protocol configuration, ensuring both ease of operation and optimal performance

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP4664916A1Method for configuring an optical fibre coupling device and device for carrying out the method
Publication Date: 2025.12.17 SAGEMCOM BROADBAND SAS
  • EP4664916A1 patent drawingFigure 1
  • EP4664916A1 patent drawingFigure 2
  • EP4664916A1 patent drawingFigure 3

AI summary

The invention relates to a method of configuring an optical fiber coupling device (111) configured to operate in an optical fiber communication network (1) further comprising an optical fiber termination device (10), said method being carried out in said coupling device (111) and comprising obtaining at least one reference information field emitted in a frame by said termination device (10), and being characterized in that it comprises a step of configuring said coupling device (111) according to a first configuration (C1) if at least one reference information field obtained includes a first predefined identifier (Id1) and in that it comprises a step of configuring said coupling device (111) according to a second configuration (C2) if at least one reference information field obtained includes a second predefined identifier (Id2).