Beam Failure Recovery During Wireless Power Saving Operation

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Solution Overview

Problem

Wireless communication protocols face inefficiencies due to resource consumption when switching between power saving and active modes, leading to system inefficiencies.

Innovation Solution

A communication device switches between power saving and active states based on data service and traffic, receiving power saving configurations and wake-up indications to improve resource utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If a communication device switches between power saving mode and active mode, then power consumption is reduced, but resource utilization efficiency deteriorates due to additional resource consumption during mode switching

Engineering Contradiction:

Improvepower consumptionVSAvoidresource utilization efficiency

Core Design Contradiction:

Use of energy by moving objectVSProductivity

Solution Approach 1:

The patent applies preliminary action by configuring beam failure recovery parameters and resources in advance during RRC connected state, so that when beam failure occurs during power saving operation, the device can immediately execute recovery procedures without additional signaling overhead or mode switching, thus avoiding resource consumption during critical transitions

Inventive Principle:

Principle #10Preliminary action

2Loss of energy

If a communication device monitors power saving channel in power saving mode, then resource consumption is reduced, but system reliability deteriorates when beam failure recovery is needed

Engineering Contradiction:

Improveresource consumptionVSAvoidbeam failure recovery capability

Core Design Contradiction:

Loss of energyVSReliability

Solution Approach 1:

The patent applies local quality by implementing selective monitoring where the device monitors power saving channel during normal operation but can quickly transition to full active mode monitoring when beam failure is detected, using locally configured recovery parameters. This ensures energy efficiency during normal operation while maintaining reliability when needed

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent prepares beam failure recovery parameters, candidate beams, and recovery resources in advance during RRC connected state, so that when beam failure occurs during power saving mode, the device can immediately execute recovery without additional signaling overhead, maintaining reliability while minimizing resource consumption

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12483984B2Beam failure recovery in a power saving operation

Publication Date: 2025.11.25 OFINNO LLC

AI summary

Wireless communication techniques for power saving are described. A wireless device may be configured with one or more power saving configurations, such as a dormant state. During a dormant state, downlink channel monitoring (e.g., on a secondary cell) may be stopped and/or a beam failure recovery procedure may be performed.