Bandwidth Part Configuration for Selective CSI-RS Measurement

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Solution Overview

Problem

Existing wireless communication systems face inefficiencies in configuring bandwidth parts (BWPs) due to the need for channel state information reference signal (CSI-RS) measurements, which can lead to resource utilization challenges and energy consumption issues.

Innovation Solution

Configuring bandwidth parts (BWPs) with indications to refrain from measuring CSI-RSs, allowing for optimized resource allocation and energy savings by reducing unnecessary measurements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If CSI-RS measurements are performed on all BWPs, then channel state information accuracy is improved, but energy consumption increases

Engineering Contradiction:
Improvechannel state information accuracyVSAvoidenergy consumption
Core Design Contradiction:
Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies local quality by configuring different measurement requirements for different BWPs. Specifically, the first BWP is configured to require CSI-RS measurements while the second BWP is configured to exempt from CSI-RS measurements. This differentiated approach ensures that measurements are performed only where necessary (maintaining local accuracy where needed) while avoiding unnecessary energy consumption in BWPs where measurements are not required.

Inventive Principle:
Principle #3Local quality

2Measurement precision

If CSI-RS measurements are performed on all BWPs, then channel state information accuracy is improved, but resource utilization efficiency deteriorates

Engineering Contradiction:
Improvechannel state information accuracyVSAvoidresource utilization efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent implements local quality by applying different measurement policies to different BWPs based on their specific requirements. The first BWP maintains high measurement precision through CSI-RS measurements, while the second BWP skips measurements to improve resource utilization efficiency. This localized differentiation resolves the contradiction by optimizing each BWP individually rather than applying a uniform measurement policy across all BWPs.

Inventive Principle:
Principle #3Local quality

3Measurement precision

If BWP configuration includes CSI-RS resources, then measurement capability is improved, but device complexity increases

Engineering Contradiction:
Improvemeasurement capabilityVSAvoidconfiguration complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the BWP configuration into distinct types: BWPs with CSI-RS resources (first BWP) and BWPs without CSI-RS resources (second BWP). Each BWP type has its own configuration parameters and measurement requirements. This segmentation reduces overall device complexity by allowing the system to selectively apply measurement configurations only where needed, rather than requiring complex configuration management for all BWPs uniformly.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12432701B2Techniques for bandwidth part configuration associated with channel state information reference signal measurement
Publication Date: 2025.09.30 QUALCOMM INC
  • US12432701B2 patent drawing
  • US12432701B2 patent drawing
  • US12432701B2 patent drawing

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a first configuration of a first bandwidth part (BWP) associated with a primary cell of a communication link. The UE may receive an indication of a second configuration of a second BWP associated with a secondary cell, the second configuration of the second BWP being associated with refraining from measuring of channel state information reference signals (CSI-RSs). Numerous other aspects are described.