Network Management Apparatus for Failure Location Identification

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Solution Overview

Problem

Existing techniques fail to identify candidates for facilities causing failures on a logical layer of a communication network, specifically lacking the ability to pinpoint issues on a physical or facility layer.

Innovation Solution

A network management apparatus and method that stores correspondence relationships between logical, physical, and facility layer objects, allowing for the acquisition and search of failure occurrence paths to identify candidate facilities causing failures by associating physical and facility layer objects with failure paths.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a failure is artificially caused on the physical layer to simulate service effects, then the service impact can be identified, but the method cannot identify candidates for the location on the physical layer that caused a failure on the logical layer

Engineering Contradiction:
Improvefailure location identification precisionVSAvoidcorrespondence information between layers
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The patent segments the network into distinct layers (logical layer, physical layer, facility layer) and creates separate information objects for each layer. This segmentation allows the system to track and identify failures at specific locations by maintaining organized correspondence relationships between layers, resolving the inability to pinpoint physical layer failure candidates.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces correspondence relationship information as an intermediary that links logical layer information objects with physical layer information objects. This intermediary enables the system to trace failures from the logical layer down to the physical layer, allowing identification of physical layer failure candidates that was previously impossible.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If correspondence relationship information between logical layer and physical layer objects is stored and searched, then candidates for facilities causing failures can be identified, but the system complexity increases

Engineering Contradiction:
Improvefailure identification accuracyVSAvoidinformation storage and search system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a universal correspondence relationship framework that can handle multiple types of information objects across different layers through a unified search mechanism. This multi-functional approach allows the same system structure to identify failures for various network components without requiring separate complex systems for each component type.

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

Solution Approach 2:

The patent performs preliminary actions by pre-establishing and storing correspondence relationship information between logical and physical layer objects before failures occur. This advance preparation enables rapid failure identification when needed, reducing the complexity of real-time analysis while maintaining high identification accuracy.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11843519B2Network management apparatus, method, and program
Publication Date: 2023.12.12 NIPPON TELEGRAPH & TELEPHONE CORP
  • US11843519B2 patent drawing
  • US11843519B2 patent drawing
  • US11843519B2 patent drawing

AI summary

A network management apparatus according to an embodiment includes: a storage device configured to store information indicating a correspondence relationship between information objects related to a logical layer, information objects related to a physical layer in a network configuration, and information objects related to a facility layer which are objects in which the information objects related to the physical layer are housed; an acquisition unit configured to acquire an information object related to an occurrence path of a failure in the logical layer of the network configuration, from the storage device; and a search unit configured to search for, among the information objects related to the facility layer stored in the storage device, an information object related to the facility layer and the physical layer associated with the information object related to the occurrence path of the failure acquired from the acquisition unit, as a candidate for a facility that causes the failure.