Proactive Beam Report Transmission for Partial Failure Recovery
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Solution Overview
Problem
In wireless communication systems, particularly in 5G NR networks, full beam failure recovery procedures can cause link interruptions and performance degradation due to substantial changes in beam configurations, especially when all beam failure detection reference signals have radio link qualities below a threshold.
Innovation Solution
A user equipment (UE) is enabled to proactively transmit a beam report indicating a partial beam failure when less than all reference signals are below a quality threshold, allowing for avoidance of a full beam failure recovery procedure by distinguishing between the radio link qualities of different reference signals and identifying new beam identification signals with improved qualities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a full beam failure recovery procedure is performed when all reference signals are below quality threshold, then beam configuration is restored to working state, but link interruptions and performance degradation occur due to substantial beam changes
Solution Approach 1:
The patent applies partial action by distinguishing between complete beam failure (all reference signals below threshold) and partial beam failure (some reference signals below threshold). When only partial failure occurs, the system performs selective beam adjustment rather than full recovery procedure, thereby maintaining communication performance while restoring reliability where needed.
2Reliability
If beam failure recovery is triggered when any reference signal is below threshold, then link reliability is improved, but unnecessary full recovery procedures increase system complexity and overhead
Solution Approach 1:
The patent segments the beam failure detection into two distinct conditions: complete failure (all reference signals below threshold) and partial failure (some but not all reference signals below threshold). This segmentation allows the system to apply different recovery strategies, reducing unnecessary full recovery procedures and simplifying beam management complexity.
Solution Approach 2:
By introducing partial beam failure detection, the system performs only the necessary beam adjustments rather than always executing full recovery procedures. This partial action approach maintains link reliability while reducing system complexity and overhead.
3Reliability
If full beam failure recovery is performed to ensure all beams are above threshold, then communication reliability is improved, but link interruptions increase due to substantial beam changes
Solution Approach 1:
The patent performs partial beam adjustments only when necessary (partial beam failure condition), avoiding substantial beam changes that cause link interruptions. This selective approach maintains communication reliability while minimizing time loss due to beam reconfiguration.
Data Source
AI summary
The aspects described herein may improve beam management at an apparatus (e.g., a UE) by allowing the apparatus to proactively transmit a beam report including information that may avoid a full beam failure recovery (BFR) procedure at the apparatus. The apparatus receives a set of beam failure detection reference signals and transmits a beam report indicating a partial beam failure when a radio link quality of at least a first beam failure detection reference signal in the set of beam failure detection reference signals is less than a quality threshold and a radio link quality of at least a second beam failure detection reference signal in the set of beam failure detection reference signals is greater than or equal to the quality threshold.