UE Capability Indication for Beam Failure Detection
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Solution Overview
Problem
Conventional wireless communication systems face inefficiencies in beam failure detection and beam management due to inadequate monitoring of channel state information reference signals and synchronization signal blocks across multiple component carriers, leading to unsatisfactory performance and ambiguity in defining the number of supported beams and resources within a given time duration.
Innovation Solution
User equipment (UE) transmits a capability message indicating its ability to monitor a defined number of link quality monitoring reference signal resources, CSI measurement resources, or active beams, allowing the base station to configure appropriate monitoring settings, ensuring that the UE only monitors resources within its capability, thereby improving beam failure detection and beam management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE monitors a large number of reference signal resources and beams across multiple component carriers, then beam failure detection accuracy improves, but device complexity and processing burden increase
Solution Approach 1:
The patent changes the parameter of monitoring capability by introducing a capability indication mechanism where the UE reports its maximum monitoring capacity (e.g., maximum number of reference signal resources, maximum number of beams) to the network. The network then adjusts the monitoring configuration parameters based on this capability report, optimizing the balance between detection accuracy and device complexity for each UE.
2Reliability
If the network configures monitoring for many resources and beams, then beam management performance improves, but loss of time for configuration and processing increases
Solution Approach 1:
The patent applies preliminary action by having the UE report its monitoring capability in advance through a capability indication message before actual beam management operations begin. The network uses this pre-reported capability information to pre-configure appropriate monitoring parameters, avoiding time-consuming trial-and-error adjustments during actual beam failure detection and management operations.
3Adaptability or versatility
If the UE monitors resources across mixed numerologies in multiple component carriers, then adaptability improves, but ambiguity in defining supported beams and resources increases
Solution Approach 1:
The patent segments the capability indication by introducing separate parameters for different numerologies and component carriers. The UE reports capability information in a structured format that distinguishes between different CCs, numerologies, and resource types, allowing the network to clearly understand which beams and resources the UE can monitor under specific conditions without ambiguity.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A UE may transmit a capability message to a base station. The capability message may indicate a capability of the UE to monitor a defined number of resources across a set of component carriers (CCs) within a time period. The resources may be channel measurement resources (CMRs) or interference measurement resources (IMRs) for signal to interference plus noise measurement, reference signal (RS) resources for channel state information (CSI) measurement, beam failure detection (BFD), reference signal receive power (RSRP) measurement, link quality monitoring, or different active beams. Based on the capability of the UE, the base station may transmit a monitoring configuration to the UE that indicates a set of resources or active beams for the UE to monitor in the set of CCs. The UE may monitor the defined resources or beams received in the monitoring configuration from the base station.