Early Beam Failure Detection for Multi-Panel UE Folding Events
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Solution Overview
Problem
Existing beam failure detection mechanisms in multi-panel user equipment (UE) are ineffective for detecting and managing beam failures caused by folding, as they are designed for external events and not controllable or predictable from the UE's perspective, leading to unnecessary lengthy and resource-intensive detection processes.
Innovation Solution
The method involves the UE detecting and predicting beam failures initiated by folding events, allowing it to directly declare a beam failure without going through the traditional detection process, by identifying impacted beam pair links and communicating with the base station to stop communication on affected links without measuring Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), or signal-to-interference-noise ratio (SNR).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the existing beam failure detection mechanism is used for multi-panel UE folding events, then the detection process follows the standard multi-stage procedure to ensure reliability, but it consumes excessive battery power and time due to the lengthy detection procedure
Solution Approach 1:
The UE performs preliminary identification of beam failure events caused by folding before initiating the full detection process. By detecting the folding event early and identifying which beam pair links will be impacted, the system can terminate the BFD process early without completing the full multi-stage detection procedure, thus saving battery power while maintaining reliability for the identified failure case
Solution Approach 2:
The patent applies skipping by allowing the system to rush through the beam failure detection process when a folding event is identified. Instead of going through all the standard stages of BFD, the system skips directly to declaring beam failure for the impacted beam pair links, thereby reducing detection time and energy consumption while maintaining adequate reliability
2Reliability
If the existing beam failure detection mechanism is used for multi-panel UE folding events, then the detection process follows the standard multi-stage procedure to ensure accuracy, but it results in delayed detection and management of beam failures
Solution Approach 1:
The system performs preliminary detection of the folding event and predicts which beam pair links will be impacted before the actual beam failure occurs. This preliminary action allows the system to declare beam failure immediately when the folding event is detected, rather than waiting for the multi-stage BFD process to complete, thus reducing detection time while maintaining accuracy through the predictive capability
Solution Approach 2:
The UE predicts the impact of folding on beam pair links in advance by identifying which panels and beams will be affected. This prediction allows the system to prepare for beam failure declaration ahead of time, enabling immediate action when the failure occurs, thereby reducing the overall detection and response time while maintaining detection accuracy
3Reliability
If the existing beam failure detection mechanism is used for multi-panel UE folding events, then the system follows the standard detection procedure with multiple measurement stages, but it results in unnecessary resource usage and processing overhead
Solution Approach 1:
The patent extracts and removes the unnecessary measurement and detection stages from the standard BFD process when a folding event is identified. By taking out the RSRP, RSRQ, and SNR measurement stages that would normally be performed, the system avoids unnecessary resource usage and processing overhead while maintaining robustness through the direct identification of the folding event and its impact on beam pair links
Solution Approach 2:
The system skips through the multiple measurement stages of the standard BFD process when a folding event is detected. Instead of performing all the scheduled measurements and evaluations, the system rushes directly to declaring beam failure for the identified impacted beam pair links, thereby improving resource efficiency and productivity while maintaining adequate detection robustness through the reliability of the folding event detection
Data Source
AI summary
A beam failure caused by an event initiated by the UE such as folding of the UE or shutting down of a UE antenna penal may be predictable. Accordingly, the UE may declare a beam failure detection (BFD) without going through a potentially long detection procedure. Disclosed herein are apparatus and methods for detecting beam failure and terminating BFD earlier than the current DFD process would have. The method may include identifying a beam failure (BF) event at the UE that impacts at least one beam pair link (BPL) and communicating a request to an associated base station to stop communicating on an impacted beam pair link, without going through an entire BFD process.