Multi-Beam Uplink Recovery After Beam Failure in Wireless Cells

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing uplink transmissions with multiple beams, particularly in heterogeneous networks, leading to suboptimal performance and resource utilization.

Innovation Solution

Implementing a mechanism that dynamically adjusts beam management strategies based on network conditions and device capabilities, utilizing multiple beams for improved uplink communication efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple beams are used for uplink transmissions, then uplink transmission performance is improved, but device complexity increases

Engineering Contradiction:

Improveuplink transmission performanceVSAvoidbeam management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The UE autonomously selects uplink beams based on downlink beam measurements and network configuration without requiring complex network-side beam management. The network provides configuration parameters and measurement guidelines, while the UE self-performs beam selection and reporting, reducing overall system complexity.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The network pre-configures beam parameters, measurement requirements, and reporting formats before uplink transmission begins. This preliminary configuration enables the UE to perform beam management efficiently without real-time complex decision-making, resolving the contradiction between performance and complexity.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If dynamic beam adjustment is implemented, then resource utilization is improved, but control signaling overhead increases

Engineering Contradiction:

Improveresource utilizationVSAvoidcontrol signaling overhead

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

Beam measurement and reporting are performed periodically based on configured intervals rather than continuously. This periodic operation maintains resource utilization while significantly reducing control signaling overhead compared to continuous beam adjustment.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system changes beam parameters dynamically based on measured conditions, but only when thresholds are met or periodically. This selective parameter updating improves resource utilization while minimizing the frequency and volume of control signaling required.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20260012813A1Uplink Transmissions with Multiple Beams

Publication Date: 2026.01.08 OFINNO LLC

AI summary

A method can include transmitting, by a wireless device and for a beam failure recovery (BFR) of a cell, a random access preamble with multiple spatial filters. The method can also include receiving a message corresponding to the random access preamble. The message indicates a spatial filter of the multiple spatial filters. The method can further include transmitting, after a number of symbols from completion of the BFR, an uplink signal with the spatial filter indicated by the message.