FTTR Gateway Mode Switching for Symmetric 2.5G Compatibility

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Solution Overview

Problem

Existing technologies lack adaptive compatibility between symmetric 2.5G FTTR and existing asymmetric 2.5G FTTR deployments, necessitating a solution to ensure seamless integration and operation.

Innovation Solution

A communication method and system for gateway devices that determine a target operation mode based on the upstream rates supported by both the main and subordinate gateway devices, enabling them to communicate effectively, thereby achieving compatibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the FTTR system uses asymmetric 2.5G rate (downstream 2.5G, upstream 1.25G) for compatibility with existing deployments, then ease of deployment is improved, but upstream transmission capacity is limited

Engineering Contradiction:
Improveease of deploymentVSAvoidupstream transmission capacity
Core Design Contradiction:
Ease of manufactureVSQuantity of substance

Solution Approach 1:

The system dynamically adapts the operation mode of subordinate gateways based on the capabilities of the main gateway. When a symmetric 2.5G main gateway is detected, subordinate gateways switch to symmetric 2.5G mode to maximize upstream capacity. When only asymmetric 2.5G main gateways are present, subordinate gateways operate in asymmetric mode for compatibility. This dynamic adaptation allows the system to optimize upstream transmission capacity whenever possible while maintaining broad deployment compatibility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the operational parameters (upstream rate and operation mode) of subordinate gateways based on the detected main gateway capabilities. The subordinate gateway determines whether to operate in asymmetric 2.5G mode or symmetric 2.5G mode by detecting the upstream rate supported by the main gateway, thereby adjusting the system parameters to achieve optimal performance for the given deployment scenario.

Inventive Principle:
Principle #35Parameter changes

2Quantity of substance

If the FTTR system implements symmetric 2.5G rate standardization, then upstream transmission capacity is improved, but compatibility with existing asymmetric 2.5G deployments deteriorates

Engineering Contradiction:
Improveupstream transmission capacityVSAvoidcompatibility
Core Design Contradiction:
Quantity of substanceVSAdaptability or versatility

Solution Approach 1:

The subordinate gateway is designed with multi-functionality to operate in both asymmetric 2.5G mode and symmetric 2.5G mode. By detecting the capabilities of the main gateway, the subordinate gateway automatically selects the appropriate operation mode, making it universally compatible with different main gateway types while enabling access to higher upstream capacities when available.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system implements a feedback mechanism where the subordinate gateway detects the upstream rate capability of the main gateway and uses this information to determine its own operation mode. This feedback loop ensures that the subordinate gateway adapts its behavior based on the system configuration, achieving both compatibility with existing asymmetric deployments and optimization for symmetric 2.5G environments.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If automatic mode determination is implemented in subordinate gateways, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improveadaptive compatibilityVSAvoidcomplexity of mode determination
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The subordinate gateway performs self-service by automatically detecting the main gateway's upstream rate capability and determining its own operation mode without requiring manual configuration or complex external control. The detection and decision-making processes are embedded in the subordinate gateway itself, enabling adaptive compatibility while keeping the implementation relatively simple and self-contained.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP4664862A1Communication method and system for gateway device, and storage medium and electronic apparatus
Publication Date: 2025.12.17 ZTE CORP
  • EP4664862A1 patent drawingFigure 1~2
  • EP4664862A1 patent drawingFigure 3~4
  • EP4664862A1 patent drawingFigure 5~6

AI summary

Provided in the embodiments of the present disclosure are a communication method and system for a gateway device, and a storage medium and an electronic apparatus. The method comprises: on the basis of an uplink rate supported by a master gateway device and an uplink rate supported by a slave gateway device, determining a target operating mode of the slave gateway device; and the slave gateway device communicating with the master gateway device according to the target operating mode. By using the above technical solution, the technical problem in the related art of how to realize adaptive compatibility of symmetric 2.5G FTTR and existing asymmetric 2.5G FTTR is solved.