DRX Mode Determination Based on Prediction Error
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Solution Overview
Problem
Current DRX systems in 5G cellular networks face challenges in adapting to sudden changes in data packet arrival times, leading to increased energy consumption and delays due to inaccuracies in AI prediction models used for dynamically adjusting sleep cycle durations.
Innovation Solution
A method is introduced to determine a DRX mode based on the error of predicted data packet arrival times, switching between a first mode that adjusts DRX configuration dynamically and a second mode with a preset configuration, using error thresholds to decide when to switch between modes to minimize delays and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If AI prediction model is used to dynamically adjust DRX configuration, then energy saving is improved, but accuracy of predicting data packet arrival time deteriorates
Solution Approach 1:
The patent implements dynamic switching between two DRX modes based on real-time prediction accuracy assessment. The system transitions from a static preset DRX configuration to a dynamic adaptive configuration when prediction accuracy exceeds a threshold, and switches back to preset mode when accuracy falls below the threshold. This dynamic adaptation resolves the contradiction by only employing complex AI-based dynamic adjustment when sufficiently accurate, thereby saving energy while maintaining reliability.
Solution Approach 2:
The patent changes the operational parameter of DRX configuration between two distinct modes: a first mode using AI-based dynamic adjustment and a second mode using preset fixed configuration. The switching decision is based on the prediction accuracy parameter, allowing the system to optimize the balance between energy saving and prediction accuracy by selecting the appropriate mode according to real-time performance assessment.
2Loss of time
If DRX configuration is dynamically adjusted according to predicted moment, then transmission delay is reduced, but energy consumption increases
Solution Approach 1:
The patent introduces a feedback mechanism that continuously monitors the actual moment of data packet arrival and compares it with the predicted moment. Based on this feedback information and the calculated prediction error, the system adjusts the DRX configuration mode. When prediction error is within the threshold, the system uses dynamic adjustment to minimize delay; when error exceeds the threshold, it switches to preset mode to avoid unnecessary energy consumption, thus resolving the contradiction through intelligent feedback control.
Solution Approach 2:
The system dynamically switches between different DRX operation modes based on real-time prediction accuracy assessment. The dynamic adjustment mode is activated only when prediction accuracy is sufficient, allowing the system to reduce transmission delay when beneficial while avoiding the energy consumption penalty of continuous dynamic adjustment. This dynamic strategy optimizes the trade-off between time loss and energy usage.
3Measurement precision
If prediction error threshold is set low, then DRX configuration accuracy is improved, but frequency of mode switching increases
Solution Approach 1:
The patent uses the prediction error threshold as a critical parameter for mode switching decision. By setting an appropriate threshold value, the system achieves a balance between configuration accuracy and switching frequency. The threshold acts as a filter that allows mode changes only when prediction accuracy reaches a sufficient level, preventing excessive switching while maintaining adequate accuracy. This parameter-based control resolves the contradiction between precision and complexity.
Data Source
AI summary
A discontinuous reception (DRX) mode determining method, including: determining an error of a predicted moment when a data packet arrives at the terminal; and determining a DRX mode used by the terminal according to the error, where the DRX mode includes a first mode of determining a DRX configuration according to the predicted moment when the data packet arrives and a second mode corresponding to a preset DRX configuration.