Beam Failure Detection Using CORESET Reference Signals
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Solution Overview
Problem
Current wireless communication networks face challenges in beam failure detection due to latency issues and improper resource configuration, leading to incorrect detection of beam failures or failure to detect poor quality signals, especially when quasi-co-located beam failure detection reference signals are not properly configured or completed.
Innovation Solution
The method involves receiving a beam failure detection reference signal configuration, detecting the absence of a configured quasi-co-located beam failure detection reference signal in a monitored control resource set, and utilizing demodulation reference signals or decoding statistics of the physical downlink control channel to evaluate the quality of the control resource set for accurate beam failure detection, with the option to wait until the corresponding quasi-co-located beam failure detection reference signal is complete before performing the detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE uses configured quasi-co-located beam failure detection reference signals for beam failure detection, then the detection accuracy is improved, but latency increases due to configuration completion requirements
Solution Approach 1:
The patent performs beam failure detection using available reference signals (such as demodulation reference signals of CORESET or PDCCH decoding statistics) before the quasi-co-located beam failure detection reference signal configuration is completed. This preliminary detection action avoids the time loss associated with waiting for configuration completion while maintaining detection capability through alternative reference signals.
Solution Approach 2:
The patent introduces intermediary reference signals (demodulation reference signals of CORESET, PDCCH decoding statistics) that can serve as substitutes for the primary beam failure detection reference signals during the configuration transition period. These intermediary signals enable continuous beam failure detection without requiring the primary reference signals to be fully configured.
2Reliability
If the UE waits for quasi-co-located beam failure detection reference signal configuration to be complete, then detection reliability is improved, but detection speed decreases
Solution Approach 1:
The patent performs beam failure detection using available reference signals even when the quasi-co-located beam failure detection reference signal configuration is not complete. This partial action approach allows detection to proceed with whatever resources are available, achieving sufficient reliability without the excessive delay of waiting for full configuration completion.
3Productivity
If the UE utilizes reference signals indicated in CORESET TCI state for beam failure detection, then resource configuration efficiency is improved, but detection accuracy may deteriorate when CORESET signals have poor quality
Solution Approach 1:
The patent uses CORESET reference signals as intermediary detection resources when primary beam failure detection reference signals are not available, while being prepared to switch to alternative reference signals (such as other available downlink reference signals) when CORESET signal quality deteriorates. This intermediary approach maintains resource configuration efficiency while providing fallback mechanisms to preserve detection accuracy.
Data Source
AI summary
An aspect of the present disclosure includes methods, systems, and computer-readable media for receiving a beam failure detection reference signal configuration, detecting an absence of a configured and quasi-co-located beam failure detection reference signal in a monitored control resource set (CORESET), and utilizing reference signals indicated in the CORESET transmission configuration indicator state for beam failure detection.