User Equipment VoIP Call Setup Measurement Report Control
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Solution Overview
Problem
Existing voice call setup procedures in wireless communications often result in dropped calls due to premature handovers or redirections triggered by measurement reports before call setup is complete, especially in VoLTE, VoNR, or EPS fallback scenarios.
Innovation Solution
A method and user equipment (UE) implementation that selectively enables or disables measurement report transmission based on call setup status and stability thresholds, preventing premature handovers during call setup and allowing reports only after completion, or enabling reports when serving cell quality is below a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If measurement report transmission is continuously enabled during VoIP call setup, then network can monitor cell quality and perform handovers, but call setup may be disrupted by premature handovers or redirections
Solution Approach 1:
The patent dynamically adjusts the measurement report transmission state based on call setup progress. The UE transitions between enabled and disabled states for measurement report transmission depending on whether call setup is in progress, allowing the system to adapt to changing conditions during the call establishment process
Solution Approach 2:
The patent determines call setup status before allowing measurement report transmission. By checking whether call setup is in progress as a preliminary condition, the system prevents premature handovers that would disrupt call establishment, ensuring call setup completes successfully before mobility operations occur
2Reliability
If measurement report transmission is disabled during VoIP call setup, then premature handovers are prevented, but network cannot respond to poor serving cell quality
Solution Approach 1:
The patent applies preliminary anti-action by disabling measurement report transmission specifically during call setup to prevent the harmful effect of premature handovers. Once call setup completes, the restriction is lifted, allowing the system to respond to poor cell quality through normal measurement reporting
Solution Approach 2:
The system dynamically switches between restricted and unrestricted measurement report transmission based on call setup status. This dynamic control allows the system to prevent harmful premature handovers during call establishment while maintaining normal mobility management capabilities after call setup succeeds
Data Source
AI summary
Methods and a user equipment (UE) are provided. The method comprises determining whether a UE is performing a voice over internet Protocol (VoIP) call setup procedure. Upon a determination that the UE is performing a VoIP call setup, transmission of measurement report information to a network in which the UE Is operating is selectively enabled or disabled until the VoIP call setup procedure is complete. Selective enablement of the transmission of the measurement report information depends upon a further determination that a serving cell currently serving the UE fails to meet a stability threshold. Selective disablement of the transmission of the measurement report information occurs when redirection or handover of the UE pursuant to the transmission of the measurement report information is a possibility.