Adaptive UE Beam Refinement Triggering for 5G P-3 Overhead
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Solution Overview
Problem
The overhead incurred by the P-3 procedure in 5G/NR communication systems, particularly in mmWave bands, due to the need for beam management and resource allocation for every user, leads to reduced downlink throughput when multiple users are present, necessitating a more efficient beam management approach.
Innovation Solution
Adaptive P-3 procedure triggering based on network information and trigger conditions, including hysteresis and keep-alive schemes, to reduce overhead and improve spectral efficiency by optimizing UE beam selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the P-3 procedure is triggered for every user to ensure beam management, then beam selection performance is improved, but downlink throughput is reduced due to increased overhead
Solution Approach 1:
The patent applies dynamics by making the P-3 procedure triggering adaptive rather than static. The base station dynamically determines whether to trigger P-3 based on real-time conditions including traffic status, beam stability, and user requirements. This allows the system to adjust beam management intensity according to actual network needs, reducing unnecessary overhead while maintaining performance when required.
Solution Approach 2:
The patent changes the triggering parameters of the P-3 procedure from fixed (every user) to conditional (based on traffic, beam stability, and network state). By modifying these parameters dynamically, the system optimizes the balance between beam selection accuracy and downlink throughput, triggering P-3 only when necessary rather than universally.
2Measurement precision
If the P-3 procedure is triggered frequently to maintain beam accuracy, then beam management precision is improved, but signaling overhead is increased
Solution Approach 1:
The patent implements periodic action through timer-based triggering mechanisms. The base station uses timers to determine when P-3 should be re-triggered based on beam stability and traffic patterns. This periodic approach ensures beam accuracy is maintained when needed while avoiding continuous triggering that would waste signaling resources.
Solution Approach 2:
The patent employs feedback mechanisms where the base station monitors beam stability, traffic status, and measurement results to determine whether to trigger P-3. This feedback loop allows the system to adjust beam management frequency based on actual performance, reducing signaling overhead when beams are stable and traffic is low.
3Reliability
If beam management procedures are performed for all users simultaneously, then coverage is improved, but resource allocation efficiency is reduced
Solution Approach 1:
The patent segments the beam management process by treating different users differently based on their individual conditions. Instead of uniform treatment, the system divides users into categories based on traffic status, beam stability, and requirements, applying P-3 triggering selectively to each segment. This segmentation improves resource allocation efficiency while maintaining coverage for users who need it.
Solution Approach 2:
The patent applies local quality by customizing beam management intensity for each user based on local conditions such as traffic patterns, beam stability, and device requirements. This localized approach ensures that resources are allocated efficiently to users who need advanced beam management while using simpler procedures for users with stable connections or low traffic.
Data Source
AI summary
A method and device for adaptive user equipment (UE) beam refinement procedure triggering and traffic-based beam management procedure training. A method comprises determining, via a base station (BS), that one or more trigger conditions have occurred. The method includes determining to trigger a UE beam refinement procedure based on determining that the trigger conditions have occurred, and transmitting a reference signal with repetitions for UE beam selection for the UE beam refinement procedure.