Beam Failure Reason Determining and Reporting in Wireless Systems
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently determining and reporting the reasons for beam failure, leading to unreliable connections and increased likelihood of subsequent failures.
Innovation Solution
The system improves beam failure reporting by having a user equipment (UE) receive reference signals from a base station over beam measurement opportunities, generate beam failure indicators, and transmit information indicative of contributing factors to beam failure, such as interference or noise, to the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam failure detection is performed using reference signals, then beam failure can be detected, but the underlying causes of beam failure cannot be identified
Solution Approach 1:
The patent segments the beam failure detection process into two distinct parts: (1) detecting beam failure using reference signals, and (2) identifying the cause of beam failure by analyzing separate cause indicators. This segmentation allows each function to be optimized independently while ensuring both detection and diagnosis capabilities are maintained.
Solution Approach 2:
The patent introduces intermediary measurements and indicators that mediate between the physical channel conditions and the beam failure cause identification. These intermediaries include measurements of interference levels, signal-to-noise ratios, and other channel quality metrics that provide insight into the underlying causes without directly detecting beam failure.
2Productivity
If beam failure recovery is performed without knowing the contributing factors, then recovery procedure can be initiated, but subsequent beam failures are likely to occur
Solution Approach 1:
The patent performs preliminary identification of beam failure causes before initiating the recovery procedure. By determining the contributing factors (such as interference, noise, or blockage) in advance, the system can select appropriate recovery strategies and mitigate the root causes, preventing immediate re-failure.
Solution Approach 2:
The patent implements a feedback mechanism where information about beam failure causes is continuously monitored and used to adjust beam selection and recovery actions. This feedback loop ensures that recovery decisions are based on current channel conditions and identified problems, improving the effectiveness of subsequent communications.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A user equipment or a base station may use the techniques described herein to report one or more beam failures and subsequently determine the reason the beam failures have occurred (e.g., interference or noise). For example, the UE may transmit information to the base station that is related to the beam failure in addition to a beam failure indication. In some cases, the UE may indicate the reason the beam failure occurred. Because the base station may factor in the reason when selecting and indicating new beams for communicating with the UE, the likelihood that beam failure will occur again may decrease.