Idle-Mode RRM Resource Configuration for Accurate Low-Power Measurements

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Solution Overview

Problem

The existing NR systems face challenges in reducing overhead and power consumption for radio resource management (RRM) measurements in RRC idle/inactive mode, particularly due to the need for minimizing timing gaps and improving measurement accuracy while maintaining sufficient T-F accuracy.

Innovation Solution

The solution involves configuring additional resources for RRM measurements in RRC idle/inactive mode using CSI-RS, TRS, wake-up signals, and modified synchronization signals, determined by a second resource configuration based on parameters from the first resource configuration and additional parameters, with a timer to validate resource validity and DCI for measurement indication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If additional resources are configured for RRM measurements in RRC idle/inactive mode, then measurement accuracy is improved, but overhead and power consumption increase

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting resource configuration parameters (such as time domain parameters, frequency domain parameters, and resource allocation parameters) based on UE mobility states, channel conditions, and network load. This allows the system to optimize measurement accuracy while minimizing power consumption by only allocating additional resources when and where needed, rather than continuously for all UEs in idle/inactive mode.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics by making resource configuration adaptive and flexible. The network can dynamically switch between different resource configuration schemes (first resource configuration for connected mode, second resource configuration for idle/inactive mode) and adjust parameters in real-time based on changing conditions. This dynamic approach ensures measurement accuracy is maintained only when necessary, reducing overall power consumption.

Inventive Principle:

Principle #15Dynamics

2Measurement precision

If additional resources are configured for RRM measurements in RRC idle/inactive mode, then measurement accuracy is improved, but system overhead increases

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidoverhead

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent changes resource configuration parameters dynamically based on UE state and network conditions. By adjusting time domain parameters (such as measurement timing configurations), frequency domain parameters (such as bandwidth allocations), and resource allocation parameters, the system achieves accurate measurements while minimizing the quantity of configured resources and associated signaling overhead.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent segments resource configuration into different schemes for different UE states (connected mode vs. idle/inactive mode). The first resource configuration is used for connected mode UEs, while the second resource configuration is used for idle/inactive mode UEs. This segmentation allows the system to apply appropriate measurement resources only to UEs that need them, reducing overall system overhead while maintaining measurement accuracy where required.

Inventive Principle:

Principle #1Segmentation

3Use of energy by moving object

If resource configuration is optimized to reduce power consumption, then energy efficiency is improved, but measurement accuracy may deteriorate

Engineering Contradiction:

Improvepower consumptionVSAvoidmeasurement accuracy

Core Design Contradiction:

Use of energy by moving objectVSMeasurement precision

Solution Approach 1:

The patent optimizes parameter settings to achieve the right balance between power consumption and measurement accuracy. By carefully adjusting time domain parameters (measurement timing, periodicity), frequency domain parameters (bandwidth, subcarrier spacing), and resource allocation parameters, the system ensures sufficient measurement accuracy is maintained while minimizing the active time and resources required, thus reducing power consumption.

Inventive Principle:

Principle #35Parameter changes

4Speed

If timing gaps are minimized for RRM measurements, then measurement speed is improved, but T-F accuracy may deteriorate

Engineering Contradiction:

Improvemeasurement speedVSAvoidT-F accuracy

Core Design Contradiction:

SpeedVSMeasurement precision

Solution Approach 1:

The patent adjusts time domain parameters and frequency domain parameters to optimize the trade-off between measurement speed and T-F accuracy. By configuring appropriate measurement timing configurations, subcarrier spacing, and cyclic prefix lengths, the system achieves fast measurement speed while maintaining sufficient time-frequency accuracy for RRM measurements in mobile environments.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12476761B2Methods and apparatuses for resource configuration

Publication Date: 2025.11.18 LENOVO (BEIJING) LTD

AI summary

The present disclosure relates to methods and apparatuses for resource configuration. A method includes receiving a first resource(s) configuration and a second resource(s) configuration; and determining a resource(s) for RRC idle/inactive mode by the second resource(s) configuration: wherein the second resource(s) configuration is determined based on value(s) of parameter(s) in the first resource(s) configuration and/or value(s) of additional parameter(s).