UE-Initiated Beam Reporting Formats for Low-Latency NR Switching

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Solution Overview

Problem

Existing wireless communication systems lack efficient mechanisms for UE-initiated beam operations, particularly in 5G/NR systems, leading to increased latency and uncertainty in beam management due to insufficient UE control over beam reporting and switching.

Innovation Solution

Implementing UE-initiated beam management frameworks that allow user equipment (UE) to autonomously determine and transmit reports based on channel state information (CSI) and event conditions, including customized report formats and resource configurations, enabling efficient beam switching and activation/deactivation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the network controls beam reporting and switching, then beam management can be standardized, but latency increases and UE responsiveness to channel changes decreases

Engineering Contradiction:

Improvebeam management reliabilityVSAvoidbeam reporting latency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The UE autonomously determines whether to trigger a beam report by evaluating event conditions (such as beam quality thresholds) without requiring network initiation. The UE independently selects reference signals, determines report quantities, and formats CSI reports based on pre-configured parameters, enabling self-service beam management that reduces latency while maintaining reliability through event-driven triggering mechanisms

Inventive Principle:

Principle #25Self-service

2Speed

If the UE autonomously initiates beam reports, then latency is reduced and responsiveness improves, but system complexity and uncertainty in beam management increase

Engineering Contradiction:

Improvebeam switching speedVSAvoidbeam management complexity

Core Design Contradiction:

SpeedVSDevice complexity

Solution Approach 1:

The system dynamically adjusts beam reporting behavior based on channel conditions through event-triggered mechanisms. The UE monitors beam quality metrics and dynamically decides when to initiate reports based on predefined events (e.g., beam quality degradation thresholds). This dynamic approach enables fast beam switching when needed while maintaining manageable complexity through standardized event conditions and report formats configured by the network

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The network configures specific parameters including event conditions, reference signal sets, report quantities, and codebook configurations. The UE changes its behavior by evaluating these parameters against measured channel states, triggering reports only when event conditions are met. This parameter-driven approach standardizes autonomous UE behavior, reducing uncertainty while enabling fast response to channel changes

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If comprehensive CSI reports are transmitted, then beam management accuracy improves, but uplink resource consumption increases

Engineering Contradiction:

Improvebeam reporting accuracyVSAvoiduplink energy consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The UE transmits partial CSI reports containing only the necessary report quantities based on triggered events and configured parameters. Rather than always transmitting complete CSI reports, the system uses event-triggered mechanisms to send only relevant beam measurement data (such as L1-RSRP or L1-SINR for specific reference signals). This partial action approach maintains beam management accuracy for critical events while significantly reducing uplink resource consumption during normal operation

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250344093A1Measurement resource configurations and report formats for UE-initiated beam operations

Publication Date: 2025.11.06 SAMSUNG ELECTRONICS CO LTD

AI summary

Apparatuses and methods for measurement resource configurations and report formats for a user equipment (UE)-initiated beam operation in a wireless communication system. A method includes receiving first information related to an event, receiving second information related to a channel state information (CSI) report, and determining, based on the first and second information, one or more first reference signals (RSs), from a configured set of RSs, that satisfy the event. The method further includes determining the CSI report with a report content including one or more first report quantities corresponding to the one or more first RSs, determining a number of zero values to be padded in the CSI report, and transmitting the CSI report including one or more first indicators each corresponding to a CSI field in the CSI report. Each of the first indicators indicates a presence or absence of a first report quantity in the corresponding CSI field.