NR Dual Connectivity RRM for FR1 PSCell Timing and Measurements

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Solution Overview

Problem

The existing 3GPP standards lack defined radio resource management (RRM) requirements for FR1-FR1 NR-DC scenarios, which affect the overall performance of NR-DC scenarios, specifically in terms of PSCell addition/release delay, scheduling availability, and carrier-specific scaling factors.

Innovation Solution

The solution involves defining new RRM requirements for FR1+FR1 NR-DC scenarios, including modified PSCell addition and release delay, updated scheduling availability due to radio link monitoring, and carrier-specific scaling factors for SSB-based and CSI-RS-based measurements, accounting for FR1-FR1 specific conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If FR1-FR1 NR-DC scenarios are implemented without defined RRM requirements, then deployment flexibility is maintained, but measurement accuracy and scheduling reliability deteriorate

Engineering Contradiction:

Improvedeployment flexibilityVSAvoidmeasurement accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent introduces carrier-specific scaling factors (CSSF) as new parameters to adjust measurement timing and reporting requirements based on the specific frequency range and dual connectivity configuration. This allows the system to maintain flexibility while improving measurement accuracy through parameter optimization.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent segments the RRM requirements into separate components: measurement requirements, scheduling availability requirements, and reporting requirements. This segmentation allows each aspect to be optimized independently while maintaining overall system flexibility.

Inventive Principle:

Principle #1Segmentation

2Speed

If PSCell addition and release delays are reduced for FR1-FR1 NR-DC, then connection setup speed improves, but measurement accuracy and scheduling reliability worsen

Engineering Contradiction:

Improveconnection setup speedVSAvoidscheduling reliability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent introduces preliminary measurement configurations and timing adjustments that are performed in advance of actual PSCell addition or release. This allows the system to prepare measurement data and scheduling information beforehand, enabling faster connection setup while maintaining reliability through pre-computed values.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where measurement results and scheduling status are continuously monitored and fed back to adjust timing parameters. This feedback loop allows the system to optimize the balance between setup speed and reliability dynamically.

Inventive Principle:

Principle #23Feedback

3Measurement precision

If carrier-specific scaling factors are introduced for FR1-FR1 NR-DC, then measurement accuracy improves, but system complexity increases

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies carrier-specific scaling factors that are tailored to individual carriers or frequency ranges rather than applying a universal scaling approach. This local quality approach improves measurement accuracy for specific scenarios while limiting the impact on overall system complexity by only affecting relevant portions of the system.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250393089A1Radio resource management requirements for new radio dual connectivity

Publication Date: 2025.12.25 INTEL CORP

AI summary

The present disclosure specifies requirements to support multi-radio (MR)-dual connectivity (DC) radio resource management (RRM) requirements, including RRM requirements for frequency range 1 (FR1)+FR1 new radio (NR)-NR Dual Connectivity (NR-DC) scenarios.