5G UE Measurement Gap Distribution for SMTC Carrier Groups
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Solution Overview
Problem
In 5G wireless systems, the discontinuous transmission of synchronization signals poses challenges for user equipment (UE) in performing measurements without disrupting serving carriers, particularly in handling measurement gaps and synchronizing synchronization signal blocks across different carriers, which affects UE measurement performance and network configuration flexibility.
Innovation Solution
The method involves grouping carriers based on synchronization signal block measurement timing configuration (SMTC) to form carrier groups and distributing measurement gaps according to intra-frequency and inter-frequency gap sharing rules, allowing for gap sharing among inter-frequency carrier groups with non-overlapping or overlapping SMTC configurations, ensuring predictable UE performance and network configuration flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If measurement gaps are distributed among multiple inter-frequency carrier groups with different SMTC configurations, then UE measurement performance becomes predictable and network configuration flexibility is maintained, but the complexity of gap distribution management increases
Solution Approach 1:
The patent segments inter-frequency carriers into distinct carrier groups based on their SMTC configurations (overlapping vs. non-overlapping). This segmentation allows independent gap distribution strategies for each group, making the overall complex problem manageable through modular handling of smaller sub-problems.
Solution Approach 2:
The patent implements dynamic gap distribution where the allocation of measurement gaps to different carrier groups adapts based on their SMTC configuration characteristics. Carriers with non-overlapping SMTC receive gaps during their specific SMTC occasions, while carriers with overlapping SMTC share gaps according to predefined rules, creating a flexible and predictable system.
2Adaptability or versatility
If measurement gaps are shared among inter-frequency carrier groups with overlapping SMTC configurations, then network configuration flexibility is improved, but measurement precision for individual carriers may deteriorate
Solution Approach 1:
The patent applies local quality by providing different gap distribution treatments to different carrier groups based on their specific SMTC characteristics. Carriers with non-overlapping SMTC receive dedicated gap resources during their specific measurement occasions, ensuring high measurement precision, while carriers with overlapping SMTC share gaps according to their specific needs, maintaining network flexibility.
3Measurement precision
If measurement gaps are allocated to carriers with non-overlapping SMTC configurations, then measurement precision is improved, but device complexity increases due to separate gap management
Solution Approach 1:
The patent merges the gap management process by establishing a unified gap distribution framework that handles both overlapping and non-overlapping SMTC carrier groups through consistent procedures. This unified approach, despite the segmented treatment of different carrier groups, reduces overall management complexity compared to entirely separate management systems.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for determining UE measurement performance in communication systems, such as NR, are provided. One method may include grouping configured carriers according to synchronization signal block measurement timing configuration (SMTC) to form carrier groups, distributing measurement gaps on the configured carriers according to an intra-frequency and inter-frequency gap sharing rule, and distributing the measurement gaps available for inter-frequency measurements among inter-frequency carrier groups according to the carrier groups with non-overlapping synchronization signal block measurement timing configuration (SMTC) or the carrier groups with overlapping synchronization signal block measurement timing configuration (SMTC) to create a distribution of the measurement gaps.