Deactivated SCG Reference Signal Scheduling to Reduce MCG Interruptions
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Solution Overview
Problem
The measurement of reference signals by a user equipment (UE) on a deactivated secondary cell group (SCG) causes interruptions to the active master cell group (MCG), leading to performance degradation and increased power consumption.
Innovation Solution
The UE is configured to align radio link monitoring and beam failure detection reference signals with a measurement timing window, allowing it to skip measurements outside this window when the SCG is deactivated, thereby reducing interruptions and conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE measures reference signals on a deactivated SCG, then radio link monitoring and beam failure detection are maintained, but interruptions to the active MCG increase and power consumption rises
Solution Approach 1:
The patent implements periodic measurement timing windows for reference signal measurements on deactivated SCG. The UE performs measurements only during specific periodic intervals (measurement timing windows) rather than continuously, allowing the RF chain to remain powered off between windows. This periodic action maintains radio link monitoring capability while significantly reducing power consumption compared to continuous measurement.
2Reliability
If the UE measures reference signals on a deactivated SCG, then radio link monitoring and beam failure detection are maintained, but interruptions to the active MCG increase
Solution Approach 1:
The patent segments the measurement process by dividing reference signal measurements into specific time-separated measurement timing windows. During these windows, the UE activates the RF chain to perform measurements on deactivated SCG. By segmenting measurements into discrete time intervals rather than continuous operation, the patent reduces interruptions to the active MCG while maintaining beam failure detection capability.
3Measurement precision
If the UE continuously monitors reference signals on deactivated SCG, then measurement accuracy is maintained, but power consumption increases
Solution Approach 1:
The patent employs periodic measurement timing windows to perform reference signal measurements on deactivated SCG only during specific intervals. The RF chain is activated during these windows to perform measurements with adequate precision, then powered off between windows. This periodic approach maintains measurement precision where needed while avoiding continuous power consumption.
Data Source
AI summary
Solutions are provided for enabling a user equipment (UE) to reduce measurements made on a deactivated primary secondary cell. In one example, a method includes processing a configuration of resources for a measurement timing window for measuring first reference signals for radio resource management and a configuration of resources for second reference signals for either radio link monitoring or beam failure detection. A first subset of the resources for the second reference signals are received within the measurement timing window and a second subset of the resources for the second reference signals are received outside the measurement timing window. When the SCG is deactivated, a status of an interruption alignment indicator is determined. When the interruption alignment indicator is set, the method includes refraining from measuring subsequent second reference signals transmitted in the second subset of the resources for the second reference signals.