Beam Failure Recovery Control Resource Set Prioritization
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Solution Overview
Problem
Conventional techniques for beam failure recovery in wireless communication systems, particularly in millimeter wave frequencies, often disrupt the recovery process, leading to increased duration of beam failure events and resource inefficiencies due to overlapping control resource sets and overbooking issues.
Innovation Solution
Implementing prioritization techniques during beam failure recovery by configuring receive beams to prioritize the beam failure recovery control resource set over other configured coresets, avoiding overlapping configurations, and ensuring the beam failure recovery control resource set is not dropped during overbooking scenarios, allowing for efficient reception of control and data signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional techniques are used for beam failure recovery, then the recovery process is disrupted by overlapping control resource sets, but the system complexity and resource utilization remain manageable
Solution Approach 1:
The patent segments control resource sets by introducing a specific type called BFR coreset that is dedicated to beam failure recovery operations, separating it from regular control resource sets. This segmentation allows the system to prioritize recovery operations without disrupting overall system complexity management.
Solution Approach 2:
The patent implements preliminary action by pre-configuring BFR coresets with specific properties and priorities before beam failure events occur. This advance preparation ensures that when failure happens, the recovery process can immediately utilize pre-arranged resources without complex real-time decision-making.
2Reliability
If beam failure recovery procedures are implemented, then new beams can be identified and activated, but the duration of beam failure events increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring BFR coresets and associated receive beams before failure occurs. This allows the UE to immediately switch to pre-prepared recovery resources, significantly reducing the time needed to identify and activate new beams after failure detection.
Solution Approach 2:
The patent introduces BFR coresets as intermediary resources that facilitate the transition from failed beams to new beams. These specialized coresets act as mediators that streamline the recovery process by providing dedicated control resources specifically for beam failure recovery operations.
3Adaptability or versatility
If multiple control resource sets are configured, then comprehensive control coverage is achieved, but overbooking issues and resource conflicts occur
Solution Approach 1:
The patent segments control resources into distinct categories: regular control resource sets for normal operations and BFR coresets for recovery operations. This segmentation prevents overbooking conflicts by ensuring that recovery resources are dedicated and cannot be contested by regular scheduling operations.
Solution Approach 2:
The patent applies local quality by assigning specific properties and priorities to BFR coresets that differentiate them from regular control resource sets. These localized characteristics include higher priority levels and specific configuration parameters that ensure efficient resource utilization during recovery scenarios.
4Reliability
If receive beams are configured for multiple control resource sets, then control signal reception is ensured, but beam switching conflicts and reception failures occur
Solution Approach 1:
The patent segments receive beam configurations by associating specific receive beams with BFR coresets, separate from those used for regular control resource sets. This segmentation eliminates beam switching conflicts by providing dedicated beam paths for recovery operations.
Solution Approach 2:
The patent implements preliminary action by pre-configuring the associations between BFR coresets and their corresponding receive beams before failure occurs. This advance pairing simplifies the recovery process by eliminating complex real-time beam switching decisions and reducing operational complexity.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine, during a beam failure recovery period, that a configured control resource set at least partially overlaps with a beam failure recovery control resource set. The UE may configure, based at least in part on the at least partial overlap, a receive beam to receive the beam failure recovery control resource set. The UE may receive a control signal over the beam failure recovery control resource set during the beam failure recovery period.