Beam Failure Detection Reference Signal Configuration for Wireless Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing inter cell beam failure detection and recovery, particularly in heterogeneous networks with multiple TRPs, where traditional methods struggle to adapt to varying traffic loads and device capabilities.
Innovation Solution
The implementation of advanced protocols and configurations within the NR user plane and control plane protocol stacks, including dynamic bandwidth adaptation, carrier aggregation, and beam management procedures, enables selective implementation of protocols based on criteria such as traffic load and device capabilities, facilitating efficient inter cell beam failure detection and recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional beam failure detection methods are used in heterogeneous networks with multiple TRPs, then the network can maintain basic connectivity, but the system fails to adapt to varying traffic loads and device capabilities resulting in reduced reliability
Solution Approach 1:
The patent implements dynamic beam failure detection by configuring multiple beam failure detection reference signals (BF DMRS) with different densities and patterns. The network can dynamically select and activate appropriate BF DMRS configurations based on current traffic load, device capabilities, and channel conditions. This allows the system to adapt its detection sensitivity and resource consumption dynamically, resolving the contradiction between maintaining high reliability and achieving adaptability to varying conditions.
Solution Approach 2:
The patent changes key parameters of beam failure detection including BF DMRS density, periodicity, and resource allocation based on network conditions. By configuring multiple BF DMRS patterns with different parameters (e.g., different time/frequency densities, different association with downlink signals), the system can select optimal parameter sets that balance detection reliability with resource efficiency for different traffic loads and device types.
2Adaptability or versatility
If advanced protocols and configurations are implemented for selective beam failure detection, then adaptability to diverse conditions improves, but device complexity and processing requirements increase
Solution Approach 1:
The patent segments the beam failure detection functionality into multiple independent BF DMRS configuration sets, each optimized for specific scenarios (e.g., high mobility, low latency, energy-saving modes). Devices can selectively activate only the configuration segments relevant to their current operating conditions and capabilities, reducing processing complexity while maintaining adaptability. The network controls which segments are activated based on device capability reporting.
Solution Approach 2:
The patent enables partial implementation of beam failure detection protocols where devices can activate only the necessary subset of BF DMRS configurations based on their capabilities and current needs. Rather than requiring full implementation of all possible detection mechanisms, the system uses partial action by activating only relevant protocol elements, thereby reducing device complexity while preserving adaptability to diverse conditions.
3Measurement precision
If multiple beam failure detection reference signals are configured with different patterns, then detection accuracy under varying conditions improves, but resource allocation complexity and overhead increase
Solution Approach 1:
The patent designs BF DMRS configurations with universal structures that can serve multiple detection purposes simultaneously. The same BF DMRS framework supports different detection scenarios (varying mobility, traffic types, device capabilities) through configurable parameters rather than requiring entirely separate detection mechanisms. This multi-functionality reduces resource allocation complexity by using a unified resource management approach that adapts to different precision requirements.
Solution Approach 2:
The patent applies local quality by configuring BF DMRS with different densities and patterns in different time-frequency regions or for different cell groups based on local conditions. Rather than uniformly increasing detection accuracy across the entire system, the network applies enhanced detection resources only where needed (e.g., in high-mobility regions or for critical services), thereby improving detection accuracy while minimizing overall resource overhead and allocation complexity.
Data Source
AI summary
A wireless device receives, via a serving cell with a first physical cell identity (PCI) and used for carrier aggregation, configuration parameters for a beam failure detection and recovery procedure. The configuration parameters indicate a beam failure detection reference signal (RS) set associated with: a second PCI of a non-serving cell associated with transmission reception points (TRPs), and a TRP index of a first TRP of the TRPs of the non-serving cell. The wireless device detects a beam failure for the first TRP of the TRPs of the non-serving cell based on the beam failure detection RS set. The wireless device transmits, via the serving cell and in response to the detecting, one or more uplink signals indicating the beam failure for the non-serving cell.