Beam Failure Detection Resources in Multi-TRP Wireless Systems
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G and LTE networks, face challenges in effectively detecting and recovering from beam failures when user equipment (UE) communicates with multiple transmitter receiver points (TRPs), leading to potential service disruptions and reduced network reliability.
Innovation Solution
The implementation of methods and systems for beam failure detection (BFD) and beam failure recovery (BFR) procedures, where UE determines resources to monitor for BFD and triggers recovery procedures based on detected failures, with network entities providing signaling for resource indication and participating in BFR processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam failure detection and recovery procedures are implemented in multi-TRP systems, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The patent segments the beam failure detection and recovery process into distinct components: separate detection procedures for each TRP, independent recovery procedures, and clear differentiation between multi-TRP and single-TRP operation modes. This segmentation allows the system to manage complexity through modular organization while maintaining high reliability through comprehensive coverage of failure scenarios.
Solution Approach 2:
The patent implements preliminary configuration of detection resources and recovery procedures before actual beam failure occurs. The system pre-configures which TRPs to monitor, what resources to detect on, and what recovery procedures to execute, thereby reducing operational complexity during failure events while ensuring reliable and timely recovery.
2Reliability
If multiple TRPs are used for communication, then communication reliability is improved, but beam failure detection complexity increases
Solution Approach 1:
The patent divides the beam failure detection task into separate, manageable segments - one detection procedure per TRP. Each TRP is monitored independently with its own detection resources and failure criteria, simplifying the detection process compared to treating multi-TRP systems as a single complex unit while maintaining comprehensive reliability.
Solution Approach 2:
The patent applies local quality by tailoring detection resources and failure detection parameters to each specific TRP's characteristics. Each TRP receives appropriate detection configuration based on its location, function, and communication role, enabling accurate and manageable failure detection without overwhelming complexity.
3Reliability
If beam failure recovery procedures are triggered frequently, then communication reliability is improved, but time loss increases
Solution Approach 1:
The patent prepares recovery procedures in advance and maintains ready-to-execute recovery configurations. When beam failure is detected, the system can immediately initiate recovery without lengthy setup processes, reducing time loss. The preliminary configuration of recovery parameters and target TRPs enables rapid response while maintaining high reliability.
Solution Approach 2:
The patent implements feedback mechanisms that continuously monitor beam quality and trigger recovery only when necessary. The system distinguishes between temporary fluctuations and actual beam failures, avoiding unnecessary recovery procedures that would waste time, while ensuring rapid recovery when genuine failures occur.
Data Source
AI summary
Certain aspects of the present disclosure provide a method for wireless communications by a user equipment (UE). The method determines resources to monitor for beam failure detection (BFD) when the UE is in a mode of operation involving at least first and second transmitter receiver points (TRPs). The method then detects a beam failure based on monitoring of the determined resources. The method further triggers a beam failure recovery (BFR) procedure based on the detection.