Beam Failure Recovery Using TCI-Based RS Pools in Wireless Links
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently assessing radio link quality and adapting to environmental changes, leading to inefficiencies and increased hardware complexity.
Innovation Solution
The implementation of a method and apparatus that utilize RS resource pools and TCI states to assess radio link quality, triggering beam failure recovery when quality thresholds are breached, and adjusting RS resources through higher layer signaling for rapid adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional radio link quality assessment methods are used, then system stability is maintained, but the system cannot quickly adapt to environmental changes
Solution Approach 1:
The patent implements dynamic adaptation by allowing the system to switch between different RS resource pools (first RS resource pool for normal operation, second RS resource pool for beam failure recovery) based on radio link quality conditions. This dynamic switching mechanism enables the system to adapt its behavior to changing environmental conditions without requiring complete system redesign.
Solution Approach 2:
The patent pre-configures multiple RS resource pools and associated TCI states before beam failure occurs. The second RS resource pool with alternative TCI states is prepared in advance, allowing the system to immediately switch to pre-prepared resources when quality degradation is detected, eliminating the need for time-consuming resource configuration during failure recovery.
2Adaptability or versatility
If multiple RS resource pools are configured for different scenarios, then adaptability improves, but device complexity increases
Solution Approach 1:
The patent creates a universal beam failure recovery mechanism that can be applied across different wireless communication scenarios (uplink, downlink, sidelink, vehicle networking) through a unified architecture. The same dual RS resource pool structure and TCI state switching logic serve multiple purposes and scenarios, reducing the need for scenario-specific hardware implementations.
Solution Approach 2:
The patent uses logical copies of RS resource configurations rather than physical hardware duplications. Multiple RS resource pools and TCI states are implemented as software-configurable parameters that can be rapidly switched without requiring physical hardware changes, thereby maintaining adaptability while minimizing hardware complexity.
3Reliability
If continuous monitoring of radio link quality is performed, then reliability improves, but energy consumption increases
Solution Approach 1:
The patent implements periodic quality assessment using configured RS resources rather than continuous monitoring. The system periodically measures radio link quality using the first RS resource pool under normal conditions and switches to the second RS resource pool for periodic verification during recovery, maintaining reliability while reducing energy consumption compared to continuous monitoring.
Data Source
AI summary
Methods and apparatuses for beam failure recovery in wireless networks are provided herein. A method performed by a user equipment (UE) includes receiving a first higher layer message set. The first higher layer message set is used to configure a first reference signal (RS) resource pool for a first bandwidth part (BWP), the first RS resource pool being used for radio link quality assessment. The method includes receiving first signaling, wherein a protocol layer to which the first signaling belongs to a protocol layer under a radio resource control (RRC) layer. As a response to receiving the first signaling, the method includes assessing a radio link quality of the first BWP according to a second RS resource pool. At least one RS resource of the second RS resource pool depends on a transmission configuration indication (TCI) state of a control resource set (CORESET).