Sidelink Reference Signal Feedback for Beam Failure Recovery

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Solution Overview

Problem

Existing sidelink beam management techniques in wireless communication networks face challenges in efficiently managing beamforming and resource allocation for device-to-device communication, leading to suboptimal performance and interference issues.

Innovation Solution

Implementing a mechanism for sidelink beam management that includes beam failure detection and recovery, resource selection procedures, and inter-UE coordination to optimize beamforming and resource allocation for improved communication efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If existing sidelink beam management techniques are used, then device-to-device communication can be established, but communication efficiency is suboptimal and interference issues occur

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidinterference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements beam failure detection and recovery mechanisms where UEs monitor beam quality metrics and provide feedback to trigger beam failure recovery procedures. This feedback loop enables dynamic adaptation of beamforming parameters to maintain communication efficiency and reduce interference through continuous optimization based on actual channel conditions

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent introduces dynamic beam management procedures including beam failure detection, recovery mechanisms, and inter-UE coordination that allow beamforming parameters to adapt in real-time to changing channel conditions. This dynamic approach replaces static beam management, enabling the system to respond to beam failures and optimize resource allocation continuously, thereby improving communication efficiency and reducing interference

Inventive Principle:

Principle #15Dynamics

2Reliability

If beamforming is optimized for device-to-device communication, then communication performance improves, but resource allocation complexity increases

Engineering Contradiction:

Improvecommunication performanceVSAvoidresource allocation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent enables UEs to autonomously perform beam failure detection, monitor beam quality metrics, and execute recovery procedures without requiring complex network coordination. This self-service approach allows each UE to independently optimize its beamforming parameters based on local channel conditions, improving communication reliability while avoiding the resource allocation complexity that would arise from centralized management

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent divides the beam management function into separate, manageable procedures: beam failure detection, beam failure recovery, and inter-UE coordination. This segmentation allows each function to be implemented independently with dedicated resource allocation, reducing overall system complexity while maintaining high communication performance through specialized optimization of each sub-function

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20260040337A1Sidelink Beam Management

Publication Date: 2026.02.05 OFINNO LLC

AI summary

A first wireless device receives, from a second wireless device, one or more first sidelink (SL) reference signals for an SL communication between the first wireless device and the second wireless device. The first wireless device transmits to the second wireless device, based on a measurement quantity of the one or more first SL reference signals being lower than a threshold for SL communication monitoring, one or more second SL reference signals for the SL communication.