Radio Communication Device Dynamic Cell Switching Control
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Solution Overview
Problem
Heterogeneous Networks in LTE and LTE-A wireless communication systems face challenges in efficiently switching mobile terminals from source cells to target cells, leading to increased failure probabilities and ping-pong switching, which affects network stability and user experience.
Innovation Solution
A device and method that evaluates signal quality variations between source and target cells, using a predetermined period and threshold values to trigger measurement reporting, thereby optimizing the switching process and reducing ping-pong switching occurrences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If various techniques are adopted to improve switching efficiency and reduce failure probability, then switching success rate is improved, but ping-pong switching probability increases
Solution Approach 1:
The patent implements dynamic adjustment of measurement reporting thresholds and indicators based on real-time signal quality variations. The system adapts the reporting criteria dynamically, increasing thresholds when signal quality is stable and decreasing them when signal quality varies rapidly, thereby preventing ping-pong switching while maintaining high switching success rates
Solution Approach 2:
The patent introduces a feedback mechanism where the network side evaluates signal quality variations and adjusts measurement reporting configurations accordingly. The system monitors switching performance and signal quality trends, then provides feedback to modify reporting thresholds, creating a closed-loop control that balances switching success rate and network stability
2Speed
If measurement reporting threshold is lowered to improve switching detection, then switching responsiveness is improved, but false switching increases
Solution Approach 1:
The patent dynamically adjusts the measurement reporting threshold based on the variation degree of signal quality. When signal quality varies rapidly, the threshold is lowered to improve detection responsiveness. When signal quality is stable, the threshold is raised to prevent false switching. This dynamic adaptation resolves the contradiction between responsiveness and accuracy
Solution Approach 2:
The patent changes the measurement reporting threshold parameter adaptively based on signal quality characteristics. The system modifies this critical parameter in real-time, adjusting it from fixed to variable, thereby optimizing both switching responsiveness and accuracy under different signal conditions
3Measurement precision
If measurement reporting is triggered frequently to improve switching accuracy, then switching precision is improved, but network overhead increases
Solution Approach 1:
The patent adaptively changes the measurement reporting trigger parameters based on signal quality variation degree. When signal quality is stable, reporting frequency is reduced to save overhead. When signal quality varies rapidly, reporting frequency is increased to improve measurement precision. This parameter adaptation resolves the contradiction between precision and overhead
Data Source
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AI summary
Disclosed are a device and method in a radio communication system. The device comprises: an acquisition unit for use in acquiring a signal quality of a mobile terminal relative to a source cell; an assessment unit for use in assessing the degree of change in the signal quality of the mobile terminal relative to the source cell on the basis of multiple signal qualities of the mobile terminal relative to the source cell acquired at every predetermined time internal; and, a triggering unit for use in triggering, on the basis of the degree of change in the signal quality of the mobile terminal relative to the source cell, the mobile terminal to submit a measurement result.