Full Duplex Beam Failure Detection via QCL-TCI Resource Derivation
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Solution Overview
Problem
Current wireless communication systems, particularly in full duplex mode, face challenges in beam failure detection due to the absence of configured reference signals, leading to self-interference and interference from other devices, which affects beam quality and connectivity.
Innovation Solution
The method involves deriving resource locations for full duplex beam failure detection from quasi co-location (QCL) relationships to transmission configuration indication (TCI) states within a full duplex control resource set (CORESET), enabling beam failure detection without explicit configuration of resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If reference signals are not configured for full duplex beam failure detection, then device complexity is reduced, but beam failure detection reliability deteriorates due to self-interference and interference from other devices
Solution Approach 1:
The system uses existing configured reference signals (downlink beam reference signals and uplink beam reference signals) to perform beam failure detection without requiring separate dedicated reference signal configurations. The UE autonomously utilizes these pre-configured signals for both beam management and beam failure detection purposes, eliminating the need for additional configuration while maintaining detection reliability
Solution Approach 2:
The patent makes existing reference signals serve multiple functions: they are used for both beam management (initial beam establishment and maintenance) and beam failure detection. This multi-functionality allows the system to achieve beam failure detection without dedicated reference signal configurations, reducing overall system complexity while maintaining reliability
2Measurement precision
If dedicated reference signals are configured for beam failure detection, then detection precision is improved, but device complexity and configuration overhead increase
Solution Approach 1:
The system allows existing reference signals to serve dual purposes of beam management and beam failure detection. The UE uses the already-configured downlink and uplink beam reference signals for failure detection without requiring separate dedicated reference signal configurations, thereby maintaining measurement precision while reducing configuration complexity
Solution Approach 2:
The patent combines the functions of beam management reference signals and beam failure detection reference signals into a single set of configured reference signals. By merging these functions, the system achieves the same detection precision as dedicated reference signals would provide, without the overhead of separate configurations
Data Source
AI summary
A User equipment (UE) receives a control resource set (CORESET) configuration for a full duplex CORESET. The UE performs a measurement for full duplex operation based on at least one of a downlink beam or an uplink beam for full duplex beam failure detection based on one or more quasi co-location (QCL) relationships to one or more transmission configuration indication (TCI) states of the CORESET based on an absence of a configuration of a reference signal for the full duplex beam failure detection.