Per-Service Flow QoS Monitoring for Precise Network Issue Isolation
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Solution Overview
Problem
Existing QoS measurement systems in mobile networks often fail to provide sufficient information to pinpoint network issues or tune configurations effectively, as they primarily focus on QoS flows rather than the individual service flows within them, which can have different characteristics and performance.
Innovation Solution
Implement mechanisms for performing Quality-of-Service (QoS) measurements on a per service flow basis, in addition to the existing per QoS flow measurements, by using enhanced protocols and message formats to capture and analyze QoS performance data for each service flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If QoS measurements are performed per QoS flow, then network performance monitoring is simplified, but measurement precision is insufficient to identify specific service flow issues
Solution Approach 1:
The patent segments QoS measurement from the aggregate QoS flow level down to the individual service flow level. By dividing the measurement scope into smaller granular units (service flows within QoS flows), the system achieves both simplified monitoring through hierarchical aggregation and precise identification through detailed service flow metrics, directly resolving the contradiction between ease of operation and measurement precision.
2Measurement precision
If QoS measurements are performed per service flow, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent implements a nested measurement architecture where service flow measurements are nested within QoS flow structures. The measurement system maintains hierarchical relationships where multiple service flows are grouped under parent QoS flows, allowing precise service flow monitoring while leveraging the organized structure to manage complexity through systematic nesting rather than isolated measurements.
Solution Approach 2:
The measurement system is designed with multi-functionality to handle both aggregate QoS flow measurements and detailed service flow measurements through a unified framework. This universal approach allows the same system infrastructure to perform measurements at different granularities, reducing the need for separate complex systems and thereby limiting the increase in device complexity while maintaining high measurement precision.
3Measurement precision
If detailed per service flow QoS metrics are collected, then network issue identification improves, but loss of information increases due to larger data volumes
Solution Approach 1:
The patent segments collected QoS data into hierarchical groups corresponding to service flows and their parent QoS flows. This segmentation allows the system to collect detailed metrics for precise network issue identification while organizing data in manageable units that reduce processing overhead and prevent information loss through systematic categorization and structured data management.
Data Source
AI summary
A system may include a first core network component. The first network component may be configured to: receive, from a second core network component, a reply which indicates that a Quality-of-Service (QoS) monitoring is to be performed for a flow associated with a User Equipment device (UE); provide information to a third core network component to establish a Protocol Data Unit (PDU) session with the UE and monitor the PDU session over a transport network; and send a message to a fourth core network component that notifies an access station to allocate resources for the PDU session.