VoIP Network QoS Evaluation Framework
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Solution Overview
Problem
Current network monitoring tools are inadequate for evaluating network suitability for Voice over IP (VoIP) applications, as they fail to integrate voice quality metrics with network device statistics effectively and lack fine time granularity, leading to incomplete monitoring and analysis of network performance.
Innovation Solution
A framework that includes topology discovery, network device monitoring, call synthesis, and analysis phases to evaluate network quality of service (QoS) by tracing application traffic paths and relating network device load to voice quality parameters, providing integrated end-to-end QoS measurements and visualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If current network monitoring tools are used, then network device statistics can be collected, but voice quality metrics cannot be effectively integrated with network device statistics
Solution Approach 1:
The patent combines voice quality metrics collection with network device statistics monitoring into a unified QoS evaluation system. The test and measurement tool simultaneously gathers both types of data and integrates them through a common user interface, enabling comprehensive VoIP readiness assessment that correlates application performance with network device performance.
Solution Approach 2:
The monitoring tool is designed to perform multiple functions: collecting network device statistics, measuring voice quality metrics, analyzing QoS parameters, and providing integrated visualization. This multi-functional approach allows a single tool to replace multiple separate monitoring solutions and effectively evaluate overall network suitability for VoIP applications.
2Measurement precision
If network monitoring is performed without fine time granularity, then monitoring coverage can be broad, but time-specific QoS analysis is insufficient
Solution Approach 1:
The system dynamically adjusts monitoring intervals and data collection frequency based on network conditions and analysis requirements. Fine time granularity is applied selectively to critical QoS parameters when needed, while maintaining broad monitoring coverage for less time-sensitive metrics, thus achieving precise time-specific analysis without uniformly high complexity across all monitoring functions.
3Reliability
If comprehensive network evaluation is performed, then complete QoS analysis is achieved, but the complexity of integrating and analyzing data increases
Solution Approach 1:
The patent introduces a centralized test and measurement tool as an intermediary that collects, integrates, and analyzes both voice quality metrics and network device statistics. This intermediary component simplifies the complexity of data integration by providing a unified collection point and processing mechanism, while still enabling comprehensive QoS analysis through correlated data from multiple sources.
Solution Approach 2:
The system implements feedback mechanisms where QoS analysis results are used to adjust monitoring parameters and provide actionable insights. The integrated analysis of voice quality and network device performance feeds back into the evaluation process, allowing the system to automatically identify problematic devices and suggest optimizations, thereby managing complexity through intelligent feedback-driven adaptation.
Data Source
AI summary
A system visualizes and generates reports from stored data, concerning various measured parameters related to a network carrying call traffic. The network is displayed in an easily recognized arrangement, with various parameters being indicated by different shapes and colors for each device on the network. The parameters are changed to indicate the status of the network at different times. More detailed information about a parameter, a device or a path between devices may be obtained simply using a mouse or keystrokes. A variety of different types of detailed displays allows the operator to troubleshoot problems in the network.