Beam Failure Recovery Threshold Comparison
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Solution Overview
Problem
Conventional techniques for beam recovery in wireless communications systems are deficient, particularly in identifying and reporting suitable new beams after a beam failure, due to reliance on multiple thresholds and challenges in determining beam quality.
Innovation Solution
A method for a user equipment (UE) to efficiently determine whether to transmit a beam report by comparing the quality of candidate beams to detection and identification thresholds, allowing for effective beam reporting in beam failure recovery procedures, including the use of reference signals and synchronization signals for new beam configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional beam recovery techniques use multiple thresholds for beam quality determination, then beam identification accuracy may improve, but device complexity and processing overhead increase
Solution Approach 1:
The patent extracts and removes the beam report transmission step from the beam failure recovery procedure. By determining beam quality against a single threshold and only transmitting beam reports when quality exceeds this threshold, the system eliminates the complexity of multiple threshold evaluations while maintaining effective beam recovery capability.
Solution Approach 2:
Instead of requiring beam reports to be transmitted when beams fail to meet multiple thresholds, the patent inverts the logic: beam reports are transmitted only when beam quality positively exceeds a single threshold. This inversion simplifies the decision-making process while improving power efficiency.
2Loss of information
If beam reports are transmitted for all candidate beams, then complete beam information is provided to the base station, but power consumption increases
Solution Approach 1:
The patent changes the parameter for beam report transmission from a mandatory action to a conditional action based on quality threshold comparison. By introducing the quality threshold parameter, the system selectively transmits only high-quality beam reports, reducing power consumption while ensuring that transmitted reports contain useful information for beam recovery.
3Reliability
If beam quality comparison uses strict thresholds, then beam identification reliability improves, but beam selection flexibility decreases
Solution Approach 1:
The patent applies dynamic threshold adjustment by allowing the quality threshold to be configured based on network conditions and beam characteristics. This dynamic approach maintains reliable beam identification through threshold comparison while adapting to different scenarios, preserving flexibility in beam selection across varying channel conditions and deployment environments.
Data Source
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AI summary
Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently determining when to transmit a beam report indicating a new beam for communicating with a base station after a current beam used for communications with the base station fails. In one example, after detecting beam failure (310), a user equipment (UE) may compare (315) a quality of each candidate beam available for communicating with a base station to a beam identification threshold, and the UE may perform beam reporting (320) based on the comparisons (e.g., refrain from transmitting a beam report if the quality of each of the candidate beams is lower than the beam identification threshold). In another example, after detecting beam failure, a UE may compare a quality of each candidate beam available for communicating with a base station to a beam detection threshold, and the UE may perform beam reporting based on the comparisons.