Network Trace Correlation for Root Cause Identification

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Solution Overview

Problem

Modern telecommunications networks face service degradation due to data traffic congestion, leading to packet loss, queuing delays, and connection issues, which degrade Quality of Service (QoS) and Quality of User Experience (QoE), as conventional approaches rely on manual analysis of data traffic at individual nodes, making it difficult to identify root causes and optimize services effectively.

Innovation Solution

The solution involves collecting and correlating trace files from multiple nodes across the network to automatically identify the root cause of service degradation, providing alert notifications and optimization recommendations to network administrators, enabling timely and efficient service optimization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If manual analysis of data traffic at individual nodes is used, then device complexity is reduced, but measurement precision and productivity deteriorate

Engineering Contradiction:
Improveanalysis system complexityVSAvoidroot cause identification accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent merges trace data from multiple network nodes into a unified trace file, combining information that would otherwise be分散 at individual nodes. This allows comprehensive network-wide analysis while maintaining manageable system complexity through automated processing of the consolidated data.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces an intermediary system that collects, correlates, and analyzes trace files from multiple nodes. This intermediary automatically processes the data to identify root causes, eliminating the need for complex manual analysis while improving measurement precision through systematic data correlation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If manual analysis of data traffic is used, then device complexity is reduced, but productivity deteriorates

Engineering Contradiction:
Improveanalysis system complexityVSAvoidservice optimization speed
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The system implements self-service through automated trace file collection, correlation, and analysis. The network management system automatically identifies service degradation issues and root causes without requiring manual intervention, significantly improving productivity while keeping the interface simple for operators.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent establishes a feedback loop where trace data is continuously collected, analyzed, and used to identify optimization opportunities. This automated feedback mechanism enables rapid detection and response to network issues, improving service optimization speed without increasing operational complexity.

Inventive Principle:
Principle #23Feedback

3Measurement precision

If trace files from multiple nodes are collected and correlated, then measurement precision improves, but device complexity increases

Engineering Contradiction:
Improveroot cause identification accuracyVSAvoidtrace correlation system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the trace correlation process into distinct functional modules: trace file collection from individual nodes, correlation processing to link related traces, and analysis to identify root causes. This segmentation improves measurement precision through comprehensive data linkage while managing complexity through modular architecture.

Inventive Principle:
Principle #1Segmentation

4Productivity

If automated trace file analysis is implemented, then productivity improves, but use of energy increases

Engineering Contradiction:
Improveservice analysis speedVSAvoidcomputational energy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies partial action by focusing computational resources on analyzing only the trace files and data packets relevant to identified service degradation issues. Rather than continuously processing all network traffic data, the system activates automated analysis only when performance thresholds are breached, improving productivity while controlling energy consumption.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS9237474B2Network device trace correlation
Publication Date: 2016.01.12 T MOBILE US INC
  • US9237474B2 patent drawing
  • US9237474B2 patent drawing
  • US9237474B2 patent drawing

AI summary

The techniques described herein present opportunities for service providers and/or network providers to optimize the Quality of User Experience (QoE) for data services by determining, using a broader network-based approach, the root cause of problems causing a service degradation. To determine the root cause of the problems, the techniques may collect different trace files from multiple different nodes in the telecommunications network. Each trace file includes a log of trace identifiers for numerous different data packets that have been generated, received, transmitted, relayed, and/or routed via the node in the telecommunications network, and each trace file log entry may be associated with a timestamp. Once collected, the techniques may correlate the different trace files from the multiple different nodes to identify, using a broader network-based analysis, service optimization opportunities.