Fine-Granularity Interface Flooding for Metro Transport Network Control

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Solution Overview

Problem

Current communication technologies face challenges in deploying unified management and control for fine granularity processing capabilities across different forwarding technologies in metro transport networks (MTN) and optical transport networks (OTN).

Innovation Solution

A flooding method and configuration method for fine granularity capabilities are introduced, which involve flooding fine granularity interface information and configuring communication nodes to support fine granularity resources. This includes describing the fine granularity interface switching capability, encoding type, and slot granularity, and using sub-TLVs and TLVs in routing protocols to manage and control these capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If unified management and control is deployed for fine granularity processing capabilities across different forwarding technologies, then the flexibility and adaptability of the network is improved, but the device complexity and difficulty of management increases

Engineering Contradiction:
Improvefine granularity processing capabilityVSAvoidmanagement complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by creating a unified management and control mechanism that works across different forwarding technologies (MTN and OTN). The flooding method and configuration approach are technology-agnostic, enabling single management plane to handle diverse fine granularity capabilities through standardized interface information flooding and capability matching procedures.

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

Solution Approach 2:

The patent introduces an intermediary management plane that mediates between control functions and forwarding technologies. This intermediary layer uses standardized flooding of interface information and capability descriptors to bridge the gap between different forwarding technologies, simplifying management by abstracting technology-specific details behind a unified control interface.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If fine granularity interface information is flooded using routing protocols with sub-TLVs and TLVs, then the precision of capability description is improved, but the loss of information and communication overhead increases

Engineering Contradiction:
Improvecapability description precisionVSAvoidinformation overhead
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The patent applies segmentation by dividing interface capability information into hierarchical structures using sub-TLVs (sub-type-length-value) and TLVs (type-length-value). This segmentation allows precise description of fine granularity capabilities while organizing information in manageable units that can be selectively processed, reducing unnecessary information transmission.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements local quality by allowing different parts of the interface information to have different levels of detail. The flooding mechanism transmits capability descriptors with appropriate granularity locally - detailed information where needed and summarized information elsewhere - optimizing the balance between precision and overhead based on local network requirements.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4546745A1Fine-grained capability based flooding method, fine-grained configuration method, node, and medium
Publication Date: 2025.04.30 ZTE CORP
  • EP4546745A1 patent drawingFigure 1~3
  • EP4546745A1 patent drawingFigure 4
  • EP4546745A1 patent drawingFigure 5

AI summary

Provided are a flooding method for a fine granularity capability, a fine granularity configuration method, a node, and a medium. The flooding method for the fine granularity capability includes: flooding fine granularity interface information of a communication node, where the fine granularity interface information includes fine granularity interface switching capability description information, and the fine granularity interface switching capability description information includes a fine granularity interface switching capability, a fine granularity encoding type, and a fine-grained slot granularity (S110).