QoE Determination Using Packet Loss and Delay Indicators
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Solution Overview
Problem
Existing methods for determining the quality of experience (QoE) for audio and video streams are inaccurate due to coarse granularity in packet loss rate measurements and inability to reflect sudden changes in QoE.
Innovation Solution
The method involves determining QoE based on key indicators such as the maximum quantity of continuously lost packets, average packet receiving time intervals, and quantity of stream interruptions, using weighted summation to achieve a more accurate and fine-grained QoE assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If packet loss rate is used as the sole indicator for QoE determination, then the measurement process is simple, but the measurement precision is insufficient due to coarse granularity and inability to reflect sudden QoE changes
Solution Approach 1:
The patent segments the QoE measurement process by dividing it into multiple independent indicator measurements (packet loss, delay, jitter, stream interruption) rather than relying on a single packet loss rate metric. Each indicator is measured and evaluated separately, then combined to form a comprehensive QoE assessment, thereby improving measurement precision without excessive complexity
Solution Approach 2:
The patent transitions from a one-dimensional packet loss rate measurement to a multi-dimensional QoE assessment framework that includes packet loss, delay, jitter, and stream interruption indicators. This dimensional expansion enables detection of sudden QoE changes that single-metric approaches miss, significantly improving measurement precision
2Measurement precision
If multiple indicators are used for QoE determination, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent implements a tiered indicator system where essential indicators (packet loss, delay, jitter) are always measured, and additional indicators (stream interruption, freezing events) are measured based on specific network conditions. This partial measurement approach maintains high measurement precision while controlling system complexity by activating only necessary measurement functions
Solution Approach 2:
The patent merges multiple indicator measurements into a unified QoE assessment framework with standardized weighting and scoring mechanisms. By combining packet loss, delay, jitter, and stream interruption measurements into a single综合评价 system, the patent manages complexity through integration rather than treating each indicator as a separate complex subsystem
3Reliability
If traditional packet loss rate measurement is used, then the measurement process is simple, but the reliability is low due to inability to reflect sudden QoE changes
Solution Approach 1:
The patent implements feedback mechanisms where each indicator (packet loss, delay, jitter, stream interruption) continuously monitors network conditions and provides real-time feedback to the QoE assessment system. This multi-channel feedback enables rapid detection of sudden QoE changes and triggers appropriate quality adjustment actions, significantly improving assessment reliability
Solution Approach 2:
The patent establishes threshold values and warning levels for each indicator before actual QoE degradation occurs. By setting preliminary thresholds for packet loss rate, delay, jitter, and stream interruption frequency, the system can detect and respond to emerging quality issues before they manifest as obvious user-perceived degradation, improving reliability through early warning
Data Source
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AI summary
This application discloses a method, apparatus, and device for determining quality of an audio and video stream, and a computer-readable storage medium, and pertains to the field of multimedia technologies. The method includes: obtaining a key indicator for a target audio and video stream, where the key indicator includes at least one of the following indicators within a reference time period: a maximum quantity of continuously lost packets, an average packet receiving time interval, an average packet receiving time interval variance, and a quantity of stream interruptions; and determining QoE of the target audio and video stream based on the key indicator for the target audio and video stream. In this application, the QoE of the target audio and video stream is determined based on at least one of the following indicators: the maximum quantity of continuously lost packets, the average packet receiving time interval, the average packet receiving time interval variance, and the quantity of stream interruptions. In this way, the determined QoE is relatively accurate.