Beam Failure Detection in Multi-TRP 5G Terminals
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Solution Overview
Problem
The unified TCI framework in communication systems, particularly in 5G and 6G, currently supports beam failure recovery only in scenarios with a single beam failure detection reference signal set, leading to poor transmission reliability for terminals.
Innovation Solution
A method and apparatus for beam failure detection that perform measurements based on multiple beam failure detection reference signal sets, each corresponding to different target information, and send a beam failure recovery request when a preset condition is met, utilizing a unified transmission configuration indicator state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single BFD RS set is used for beam failure detection, then the system complexity is reduced, but the transmission reliability deteriorates
Solution Approach 1:
The patent divides the beam failure detection system into multiple independent BFD RS sets, where each set corresponds to different target information (e.g., different TRPs or beams). This segmentation allows the system to monitor multiple transmission paths simultaneously, improving reliability without requiring a monolithic complex system. Each BFD RS set can be independently configured and processed.
Solution Approach 2:
The patent introduces a new dimension of monitoring by enabling multiple BFD RS sets to operate concurrently, each targeting different transmission points or beams. This multi-dimensional approach transforms single-point failure detection into multi-point detection, allowing the system to identify and recover from beam failures more effectively while maintaining manageable complexity through structured organization.
2Reliability
If multiple BFD RS sets are used for beam failure detection, then the transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The patent designs a universal beam failure detection mechanism that can handle multiple BFD RS sets through a unified processing framework. The same detection logic, evaluation criteria, and recovery procedures apply across all BFD RS sets, allowing the system to maintain high reliability through multi-set monitoring while avoiding the complexity of separate specialized systems for each set.
Solution Approach 2:
The patent implements feedback mechanisms where measurement results from multiple BFD RS sets are continuously evaluated against preset conditions. When failures are detected in any set, the system provides feedback to trigger appropriate recovery actions. This structured feedback loop manages complexity by automating the decision-making process and ensuring consistent response across all BFD RS sets.
3Reliability
If beam failure detection is performed in multi-TRP scenarios, then the transmission reliability is improved, but the measurement and detection difficulty increases
Solution Approach 1:
The patent segments the measurement task by associating different BFD RS sets with specific target information such as different TRPs or beams. This segmentation allows the system to perform targeted measurements for each transmission path using standardized procedures, making the overall multi-TRP detection manageable through systematic breakdown of the measurement space.
Solution Approach 2:
The patent employs parameter changes by configuring different measurement criteria and evaluation thresholds for each BFD RS set based on its specific target information. This allows the system to adapt measurement parameters to the specific characteristics of each TRP or beam, simplifying the detection process while maintaining high reliability across diverse multi-TRP scenarios.
Data Source
AI summary
A beam failure detection method and apparatus, a terminal, and a storage medium, pertaining to the field of communications technologies. The beam failure detection method of the embodiments of this application includes: performing, by a terminal, measurement based on a plurality of BFD RS sets, where the plurality of BFD RS sets respectively correspond to a plurality of pieces of target information, and at least one of control channels corresponding to the target information uses a unified transmission configuration indicator TCI state; and sending a BFRQ in a case that a measurement result of at least one BFD RS set meets a preset condition.