Dropped Connection Detection for Mobile Networks
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Solution Overview
Problem
Current methods for determining dropped connections in mobile communication networks are inadequate for real-time services like voice conversations or streaming media, as they do not accurately reflect user experience and can misclassify disruptions.
Innovation Solution
A method is introduced to differentiate between real-time and non-real-time radio bearers by determining a dropped connection based on whether the released radio bearer is involuntary and if there is remaining user data in the buffer, allowing for tailored measurement approaches that better reflect service type characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed session time of 100 ms after the last data transfer is used to determine dropped connections, then the measurement works for best-effort traffic, but it inaccurately reflects user experience for real-time services like voice conversations
Solution Approach 1:
The patent segments the measurement approach by radio bearer type, creating separate determination paths for real-time services and best-effort traffic. This allows each service type to have its own optimized measurement criteria, with real-time services using session duration-based detection and best-effort traffic using buffer data-based detection.
Solution Approach 2:
The patent introduces dynamic adaptability by making the dropped connection determination method dependent on the service type. The system dynamically selects between two different measurement approaches based on whether the radio bearer is classified as real-time or best-effort, allowing the measurement precision to adapt to different service requirements.
2Measurement precision
If the session time is increased beyond 100 ms to accommodate real-time services, then real-time service measurement accuracy improves, but best-effort traffic session times become longer than necessary
Solution Approach 1:
The patent applies local quality by tailoring the measurement parameters to each service type's specific requirements. Real-time services receive extended session time monitoring appropriate for their continuous nature, while best-effort traffic uses the standard 100 ms threshold appropriate for its intermittent data transfer pattern.
Solution Approach 2:
The patent changes the measurement parameters based on service type classification. For real-time services, the session duration parameter is extended beyond 100 ms to capture the continuous nature of these services, while best-effort traffic maintains the original 100 ms parameter setting.
3Measurement precision
If any released radio bearer during session is considered a dropped connection for real-time services, then user experience accuracy improves, but the measurement may overcount for services with normal inactive periods
Solution Approach 1:
The patent uses feedback from service type classification to adjust the dropped connection determination criteria. By identifying whether a radio bearer serves real-time or best-effort traffic, the system applies appropriate thresholds and criteria, preventing false positives from normal service behavior patterns.
Data Source
AI summary
A method is performed in a network node of a mobile communication network, for determining a dropped connection to a mobile terminal. The method comprises: detecting a release of a radio bearer associated with the mobile terminal; determining whether the radio bearer is a real-time type radio bearer; when the radio bearer is a real-time type radio bearer, determining the released radio bearer to be a dropped connection when the release is classified as an involuntary release; and when the radio bearer differs from a real-time type radio bearer, determining the released radio bearer to be a dropped connection when there is remaining user data in a buffer for transfer in either direction over the released radio bearer. A corresponding network node, computer program and computer program product are also presented.