Beam Failure Recovery Configuration for Wireless Devices

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Solution Overview

Problem

Wireless devices face challenges in recovering from beam failures due to interruptions and interference, which can degrade service if they cannot be reconfigured to receive transmissions via different beams, without increasing signaling overhead or decreasing spectral efficiency.

Innovation Solution

A base station sends configuration information for a beam failure recovery (BFR) procedure, allowing wireless devices to determine and select candidate beams based on downlink signal measurements, and send uplink signals to indicate these beams, enabling BFR with or without beam correspondence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a wireless device is configured to receive transmissions via multiple different beams, then cell capacity is increased, but individual beams become subject to interruption and interference

Engineering Contradiction:

Improvecell capacityVSAvoidbeam transmission stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent segments the transmission into multiple different beams (first beam, second beam, third beam) to increase cell capacity. Each beam operates independently, allowing the system to divide the overall transmission task into separate directional channels, thereby improving productivity while managing reliability risks through diversification.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements prior cushioning by configuring the wireless device with multiple alternative beams before beam failure occurs. When beam failure is detected on the first beam, the device can immediately switch to a second beam or third beam that were pre-configured and ready, cushioning against the interruption and maintaining service continuity without requiring complex real-time reconfiguration.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Adaptability or versatility

If beam failure recovery is implemented without beam correspondence, then recovery flexibility is improved, but device complexity increases

Engineering Contradiction:

Improverecovery flexibilityVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by enabling beam failure recovery procedures that adapt to different scenarios - with or without beam correspondence. The system dynamically selects the appropriate recovery path based on device capabilities and network configuration, allowing flexible adaptation to various operational conditions while managing complexity through standardized procedures.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements universality by designing a beam failure recovery mechanism that works across different beam correspondence scenarios. The same basic recovery framework (detecting beam failure, selecting alternative beams, switching beams) serves multiple functions - working whether beam correspondence is available or not, thereby improving adaptability without proportionally increasing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If configuration information for BFR procedure is sent to wireless devices, then beam failure recovery capability is improved, but signaling overhead increases

Engineering Contradiction:

Improvebeam failure recovery capabilityVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent applies preliminary action by sending configuration information for the beam failure recovery procedure in advance, before beam failure occurs. The network configures multiple alternative beams and recovery parameters beforehand, so that when beam failure is detected, the wireless device can immediately execute the pre-configured recovery steps without requiring additional signaling, thereby reducing signaling overhead while maintaining recovery capability.

Inventive Principle:

Principle #10Preliminary action

4Duration of action of stationary object

If wireless devices switch to alternative beams upon failure, then service continuity is improved, but transmission irregularities may persist

Engineering Contradiction:

Improveservice continuityVSAvoidtransmission irregularities

Core Design Contradiction:

Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent implements feedback by continuously monitoring beam quality and detecting beam failure conditions. When transmission irregularities are detected on the current beam, the system triggers beam failure recovery procedures that switch to alternative beams. This feedback mechanism ensures service continuity by automatically responding to degradation, while the ability to detect and respond to irregularities allows the system to avoid prolonged exposure to harmful transmission conditions.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12160921B2Configuration for beam failure recovery

Publication Date: 2024.12.03 COMCAST CABLE COMM LLC

AI summary

Systems, apparatuses, and methods are described for wireless communications. A base station may indicate one or more resources for beam failure recovery. The one or more resources may comprise one or more resources for downlink transmission and one or more resources for uplink transmission. A beam failure recovery may be based on the one or more resources for downlink transmission. A wireless device may send, based on the one or more resources for uplink transmission, uplink information for beam failure recovery.