Beam Failure Recovery Using Priority-Based Candidate Beam Selection
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently detecting and recovering from beam failures in cross division duplexing (XDD) environments, particularly in managing interference and ensuring reliable beam selection for optimal communication.
Innovation Solution
A method for beam failure detection and recovery involves receiving configuration information with beam failure recovery parameter sets, determining a priority-based parameter set, and selecting a candidate beam that meets measurement and interference criteria for effective beam recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple BFR parameter sets are configured with different priorities, then beam failure recovery adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments BFR configuration into multiple parameter sets (first BFR parameter set, second BFR parameter set, etc.), each with different priorities and associated with different panels. This segmentation allows the system to handle different beam failure scenarios with appropriate parameters, improving adaptability while managing complexity through structured organization.
Solution Approach 2:
The patent implements dynamic selection of BFR parameter sets based on active panel status and received indications. The WTRU dynamically determines which parameter set to use by evaluating panel activity and priority levels, enabling adaptive response to changing channel conditions without requiring complex manual configuration.
2Measurement precision
If beam failure detection criteria include both measurement and interference checks, then detection precision is improved, but difficulty of detecting and measuring increases
Solution Approach 1:
The patent divides beam failure detection into separate measurement criteria and interference criteria. By segmenting the detection process into distinct evaluation steps (first checking measurement criteria, then interference criteria), the system achieves comprehensive detection precision while managing measurement complexity through structured assessment.
Solution Approach 2:
The patent applies different criteria thresholds and evaluation methods for different scenarios (e.g., different BFR parameter sets have different associated criteria). This local quality approach allows optimized detection for specific conditions while maintaining overall system precision without requiring uniform complex detection across all scenarios.
Data Source
AI summary
Methods and apparatuses for beam failure detection and recovery (BFR) are described. Methods include a wireless transmit/receive unit: receiving configuration information including BFR parameter sets with respective candidate beam reference signals (RSs), measurement criteria and interference criteria; detecting beam failure; determining a first BFR parameter set based on a priority of the first BFR parameter set, wherein the priority of the first BFR parameter set is determined based on which panel of the plurality of antenna panels is active, or on a received indication; on a condition that at least one candidate beam RS in the set of candidate beam RSs of the first BFR parameter set satisfies both the measurement criterion and the interference criterion: selecting a candidate beam RS in the set of candidate beam RSs of the first BFR parameter set that satisfies the measurement criterion and the interference criterion, and indicating the selected candidate beam RS.