User Equipment Beam Measurement Prioritization
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Solution Overview
Problem
Conventional wireless communication systems lack a mechanism to prioritize candidate UE receive beams, leading to inefficient beam switching and potential delays in selecting the optimal serving beam, resulting in suboptimal performance and increased power consumption.
Innovation Solution
A method where user equipment (UE) prioritizes candidate UE receive beams by maintaining a Class 3 beam set, measuring reference signals more frequently, and performing beam switching based on performance thresholds to ensure timely updates and optimal beam selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE measures all candidate beams uniformly across measurement occasions, then measurement completeness is maintained, but beam switching efficiency deteriorates due to lack of prioritization for high-performing beams
Solution Approach 1:
The patent segments the set of candidate beams into different subsets (first subset and second subset) based on their performance metrics relative to the serving beam. This segmentation allows the UE to apply different measurement strategies to different beam subsets, prioritizing measurements of beams that are closer in performance to the current serving beam, thereby improving beam switching efficiency without compromising measurement completeness.
Solution Approach 2:
The patent applies local quality by assigning different measurement frequencies and priorities to different beam subsets. Specifically, beams in the first subset (those with performance metrics within a threshold of the serving beam) receive higher measurement priority and more frequent measurements compared to beams in the second subset. This localized differentiation optimizes the measurement process for the most relevant beams.
2Measurement precision
If the UE increases measurement frequency for all candidate beams, then beam selection accuracy is improved, but power consumption increases
Solution Approach 1:
The patent segments candidate beams into subsets based on their performance characteristics, allowing the UE to concentrate measurement resources on the first subset (beams with performance metrics within a threshold of the serving beam) while reducing measurements for the second subset. This segmentation enables accurate measurement of relevant beams without the excessive power consumption that would result from uniformly high measurement frequencies across all candidate beams.
Solution Approach 2:
The patent applies partial action by performing high-frequency measurements only on a partial subset of candidate beams (the first subset) rather than all candidate beams. This selective measurement approach maintains measurement precision for the most promising beams while avoiding the excessive power consumption that would result from measuring all beams at the same high frequency.
3Reliability
If the UE maintains a large set of candidate beams for measurement, then beam switching reliability is improved, but measurement overhead increases
Solution Approach 1:
The patent segments the large set of candidate beams into multiple subsets based on performance metrics, which simplifies the management and measurement process. By organizing beams into subsets (first subset with beams close to serving beam performance, second subset with other candidate beams), the UE can apply different measurement strategies to each subset, reducing the overall measurement overhead while maintaining reliability through the presence of multiple candidate beams.
Solution Approach 2:
The patent applies local quality by applying different measurement priorities and frequencies to different subsets of candidate beams. The first subset receives higher priority measurements while the second subset receives lower priority measurements, which reduces measurement overhead and management complexity compared to treating all candidate beams uniformly, while still maintaining beam switching reliability through the segmented approach.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may measure a reference signal over a first subset of a set of measurement occasions using a serving UE receive beam according to a serving beam measurement periodicity. The UE may measure the reference signal over a second subset of the set of measurement occasions using a first subset of candidate UE receive beams of a set of candidate UE receive beams. The UE may measure the reference signal over a third subset of the set of measurement occasions using a second subset of candidate UE receive beams of the set of candidate UE receive beams. The UE may perform beam switching to a candidate UE receive beam of the set of candidate UE receive beams based at least in part on a result of measuring the reference signal.