Wireless Beam Failure Recovery With Segmented Uplink Resources

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Solution Overview

Problem

Beam failure recovery procedures in wireless communications consume significant resources and lead to system inefficiencies due to the consumption of frequency, time, and energy resources.

Innovation Solution

Implementing beam failure recovery methods that utilize different uplink/downlink resources for indicating and acknowledging candidate beam selection status and communicating configuration parameters, enhancing resource allocation, power consumption, and reducing latency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional beam failure recovery procedures are used, then beam failure recovery can be achieved, but frequency, time, and energy resources are consumed excessively

Engineering Contradiction:

Improvebeam failure recoveryVSAvoidenergy resources consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The beam failure recovery procedure is segmented into distinct phases: candidate beam indication phase using first uplink resources, and candidate beam acknowledgement phase using second uplink resources. This segmentation allows efficient resource utilization by separating different functional requirements and avoiding resource conflicts, thereby reducing overall energy consumption while maintaining recovery reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent dynamically selects and switches between different uplink resources (first uplink resources for indication, second uplink resources for acknowledgement) based on the specific requirements of each recovery phase. This dynamic resource allocation optimizes energy consumption by using the minimum necessary resources for each operation while ensuring reliable beam failure recovery.

Inventive Principle:

Principle #15Dynamics

2Reliability

If traditional beam failure recovery procedures are used, then beam failure recovery can be achieved, but system efficiency deteriorates due to resource consumption

Engineering Contradiction:

Improvebeam failure recoveryVSAvoidsystem efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

By segmenting the recovery procedure into distinct indication and acknowledgement phases with dedicated resources, the system avoids resource conflicts and reduces recovery time. This segmentation enables parallel processing of recovery operations and improves overall system efficiency while maintaining reliable beam failure recovery.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements a feedback mechanism where the base station sends acknowledgement information back to the wireless device regarding candidate beam selection. This feedback loop ensures efficient resource utilization by confirming successful recovery operations and allowing the system to adjust resource allocation dynamically, thereby improving system efficiency.

Inventive Principle:

Principle #23Feedback

3Reliability

If beam failure recovery procedures consume more resources, then recovery can be performed, but latency increases

Engineering Contradiction:

Improvebeam failure recoveryVSAvoidlatency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Segmenting the recovery procedure into separate indication and acknowledgement phases with dedicated time slots allows for optimized timing and reduces overall recovery latency. The structured approach ensures that each phase completes efficiently without waiting for resource conflicts, thereby reducing time loss while maintaining reliable recovery.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs preliminary actions by pre-configuring multiple uplink resources (first and second uplink resources) before beam failure occurs. This preparation allows the wireless device to immediately switch to the appropriate resources when failure is detected, reducing recovery latency while ensuring reliable beam failure recovery through pre-established communication paths.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12381614B2Beam management for cells in wireless communications

Publication Date: 2025.08.05 OFINNO LLC

AI summary

Wireless communications and beam failure recovery are described. A wireless device may send one or more messages associated with a beam failure recovery for one or more cells. The one or more message may comprise an indication that a candidate beam is not available. The one or more message may comprise at least one value to indicate information associated with a candidate beam.