Carrier-Specific Scaling for NR Gap-Based Cell Measurement
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Solution Overview
Problem
In New Radio (NR) wireless communication systems, existing methods for gap-based cell measurement in wireless communications face challenges in efficiently scheduling measurement opportunities across multiple frequency layers, leading to suboptimal measurement performance due to varying periodicities and overlapping measurement gaps.
Innovation Solution
A method is introduced that determines a carrier-specific scaling factor for each measurement object based on the number of candidate measurement objects in each gap occasion, using gap scheduling methods that account for different types of measurement objects (intra-frequency, inter-frequency, and inter-RAT) and apply gap sharing schemes to optimize measurement opportunities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple frequency layers are measured within measurement gaps, then measurement coverage is improved, but measurement scheduling complexity increases due to varying periodicities and overlapping gaps
Solution Approach 1:
The patent introduces carrier-specific scaling factors that modify measurement periodicity parameters based on the number of candidate measurement objects in each gap occasion. This dynamic parameter adjustment resolves the scheduling complexity by adapting the measurement timing to the actual number of objects to be measured, rather than using fixed periodicities for all frequency layers.
Solution Approach 2:
The measurement scheduling is made dynamic through the introduction of scaling factors that are calculated based on the number of candidate measurement objects. This allows the system to adaptively adjust measurement opportunities in real-time, transforming a static scheduling approach into a dynamic one that responds to the actual measurement requirements.
2Measurement precision
If measurement opportunities are increased for multiple frequency layers, then measurement precision is improved, but measurement delay increases due to gap sharing requirements
Solution Approach 1:
The patent changes the time parameter by introducing carrier-specific scaling factors that adjust measurement periodicity. This allows the system to maintain measurement precision for multiple frequency layers while controlling measurement delays through adaptive parameter modification rather than fixed timing constraints.
Solution Approach 2:
The patent segments the measurement process by applying different scaling factors to different frequency layers based on their specific conditions. This segmentation allows tailored measurement scheduling for each layer, improving overall measurement precision without uniformly increasing delays across all layers.
3Productivity
If gap sharing schemes are applied to multiple measurement objects, then resource efficiency is improved, but scheduling complexity increases due to different MO types
Solution Approach 1:
The patent applies local quality by introducing carrier-specific scaling factors that are tailored to each frequency layer's characteristics and the number of candidate measurement objects. This localized approach allows efficient resource sharing while simplifying scheduling decisions for each specific carrier rather than requiring complex global optimization.
Solution Approach 2:
By changing the scheduling parameters through carrier-specific scaling factors, the system achieves efficient resource utilization across multiple measurement objects while avoiding the complexity of uniform gap sharing schemes. Each carrier's measurement timing is adjusted based on its specific needs.
Data Source
AI summary
A method can include receiving measurement configurations for measuring serving/neighboring cells at a user equipment (UE) in a wireless communication system. The measurement configurations can indicate multiple measurement objects (MOs) each with a SSB measurement timing configuration (SMTC) specifying a sequence of SMTC window durations (i.e. SMTC occasions), and a sequence of gap occasions. The MOs can be measured within the SMTC occasions that overlap the gap occasions. The method can further include determining a carrier-specific scaling factor for a target MO in the multiple MOs based on candidate MOs to be measured in each of the gap occasions.