Beam Failure Recovery Across TRP-Specific Resource Sets
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Solution Overview
Problem
In wireless communications, beam failure detection and recovery are challenging due to varying signal losses across different transmission/reception points, leading to communication errors and misalignments.
Innovation Solution
A base station configures beam failure detection sets for each transmission/reception point, allowing wireless devices to adjust communication parameters selectively for subsets of nodes experiencing beam failure, enhancing beamforming and reducing errors through optimized power allocation and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam failure detection is performed across all transmission/reception points, then communication reliability is improved, but power consumption and control complexity increase
Solution Approach 1:
The patent divides the beam failure detection process into separate detection sets for different transmission/reception points. The wireless device performs beam failure detection independently for each detection set associated with specific TRPs, rather than uniformly across all TRPs. This segmentation allows selective adjustment of parameters like power allocation and beamforming only for affected TRPs, reducing overall power consumption while maintaining communication reliability.
2Reliability
If beam failure detection is performed across all transmission/reception points, then communication reliability is improved, but control complexity increases
Solution Approach 1:
The patent segments the beam failure recovery control into separate procedures for different detection sets and TRP subsets. The base station configures multiple detection sets, each associated with specific TRPs, and the wireless device performs recovery procedures selectively for each subset. This segmentation simplifies control by localizing the recovery process to only those TRPs experiencing beam failure, rather than managing all TRPs uniformly.
Solution Approach 2:
The patent applies local quality by adjusting beamforming and power allocation parameters specifically for the subset of TRPs experiencing beam failure, while leaving other TRPs unchanged. This localized adjustment reduces control complexity by focusing resources only where needed, rather than requiring global reconfiguration of all transmission/reception points.
3Reliability
If communication parameters are adjusted for all nodes, then beam misalignments are reduced, but power allocation efficiency decreases
Solution Approach 1:
The patent implements local quality by adjusting communication parameters such as power allocation and beamforming only for the specific subset of TRPs identified as experiencing beam failure. The base station provides indicators specifying which TRPs require parameter adjustments, allowing the wireless device to apply corrections locally rather than globally. This approach maintains beam alignment accuracy for affected TRPs while avoiding unnecessary power consumption from adjusting parameters for TRPs that are functioning properly.
Data Source
AI summary
A plurality of resource sets may be used and controlled in wireless communications. Based on a beam failure associated with a first subset (e.g., at least one first beam resource set) of a plurality of beam resource sets, a candidate reference signal may be used for communications between a base station and a wireless device. At least one parameter associated with a second subset (e.g., at least one second beam resource set) of the plurality of beam resource sets may be maintained, and the candidate reference signal may not be used for communications associated with the second subset of the plurality of beam resource sets.