UE Measurement Coordination for L1-L3 Collision Handling
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Solution Overview
Problem
User equipment (UE) faces challenges in performing both Layer 1 (L1) and Layer 3 (L3) measurements concurrently due to overlapping measurement occasions, leading to inadequate performance and user experience.
Innovation Solution
Implementing a coordination scheme that manages L1 and L3 measurements by configuring CSI-RS L3 measurement windows, identifying collisions, and omitting certain L1 measurements to ensure timely resource management without performance degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the UE performs both L1 and L3 measurements concurrently, then measurement coverage is improved, but measurement performance deteriorates due to overlapping measurement occasions
Solution Approach 1:
The patent segments the measurement operations by dividing them into different priority levels (L3 measurements with higher priority, L1 measurements with lower priority). When a collision is detected, the UE selectively performs only the high-priority L3 measurements and omits the lower-priority L1 measurements, thereby ensuring measurement performance is maintained while still providing comprehensive measurement coverage through the segmented approach.
Solution Approach 2:
The patent changes the parameter of measurement operation selection based on collision detection. When an overlap is identified between L1 measurement occasions and L3 measurement windows, the UE dynamically adjusts which measurements to perform by prioritizing L3 measurements and dropping L1 measurements, thus resolving the performance degradation issue while maintaining overall measurement coverage.
2Reliability
If the UE prioritizes L3 measurements during collisions, then measurement reliability is improved, but L1 measurement completeness worsens
Solution Approach 1:
The patent extracts the conflicting L1 measurement operations from the execution set when a collision with L3 measurements is detected. By removing (omitting) the L1 measurements that would interfere with L3 measurements, the system ensures reliable L3 measurement performance while accepting that some L1 measurements will be incomplete or omitted during collision periods.
Solution Approach 2:
Instead of attempting to perform all measurements equally, the patent inverts the approach by selectively omitting certain measurements (L1) to protect the integrity of more critical measurements (L3). This inversion of the traditional 'do everything' approach resolves the contradiction by prioritizing measurement reliability over complete L1 measurement coverage during collision scenarios.
3Measurement precision
If the UE configures separate measurement windows for L1 and L3, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent implements a dynamic measurement coordination scheme where the UE continuously monitors for collisions between L1 measurement occasions and L3 measurement windows. Based on real-time collision detection, the UE dynamically adjusts its measurement execution strategy - performing both measurements when no collision exists and selectively prioritizing L3 measurements when a collision is detected. This dynamic approach maintains measurement accuracy while managing device complexity through adaptive decision-making rather than rigid separate configurations.
Data Source
AI summary
A user equipment (UE) may be configured to perform layer 1 (L1) measurement procedures and layer 3 (L3) measurement procedures. The UE configures a channel state information-reference signal (CSI-RS) layer 3 (L3) measurement window, identifies a collision between a layer 1 (L1) measurement operation and a L3 measurement operation and omits at least one L1 measurement in response to identifying the collision.