NR-U CORESET Resource Alignment for Wide-Band PDCCH Monitoring

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Solution Overview

Problem

In NR-U wide-band operations, misalignment of CORESET resource allocation with varying RB set sizes leads to inefficient use of resources and potential loss of information due to punctured PDCCH candidates.

Innovation Solution

Adjusting the PDCCH-monitoring protocol by ignoring, rate-matching, or modifying the CORESET resource allocation to ensure it is fully confined within the RB set, using a frequency domain monitoring occasion based on the size of the zeroth RB set.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If CORESET resource allocation is based on zeroth RB set size, then frequency domain monitoring occasions can be established, but misalignment occurs with varying RB set sizes causing partial confinement issues

Engineering Contradiction:

Improvefrequency domain monitoring occasion configurationVSAvoidCORESET resource alignment with RB set

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting the CORESET resource allocation based on the actual RB set size rather than using a fixed zeroth RB set size. The method determines whether to use zeroth RB set size or first RB set size based on configuration information, allowing the system to adapt to varying bandwidth parts and RB set configurations while maintaining proper alignment.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If PDCCH candidates are monitored in partially confined CORESET resources, then wide-band operation is enabled, but noise and interference increase due to misalignment

Engineering Contradiction:

Improvewide-band operation capabilityVSAvoidnoise and interference in PDCCH decoding

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements dynamics by making the CORESET resource determination adaptive rather than static. The method dynamically selects between using zeroth RB set size or first RB set size based on configuration information, allowing the system to adjust to different operational conditions and maintain optimal performance across varying bandwidth parts.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent converts the potential harm of misalignment into a benefit by using the misalignment detection mechanism to trigger appropriate resource allocation adjustments. When misalignment is detected, the system automatically adjusts the CORESET resource determination to use the correct RB set size, transforming the problem into an opportunity for improved accuracy.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Adaptability or versatility

If CORESET resources are not fully confined within RB set, then resource utilization flexibility is improved, but PDCCH decoding performance deteriorates

Engineering Contradiction:

ImproveCORESET resource allocation flexibilityVSAvoidPDCCH decoding performance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent uses parameter changes to resolve this contradiction by dynamically adjusting the resource determination parameter. The method changes the parameter used for CORESET resource calculation based on configuration information, switching between zeroth RB set size and first RB set size to ensure proper confinement while maintaining flexibility.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250294601A1Coreset frequency resource configuration for wide-band operation in NR-u

Publication Date: 2025.09.18 SAMSUNG SEMICONDUCTOR INC

AI summary

Provided is a method of network communication for addressing a misalignment of a CORESET resource allocation with a first RB set due to varying RB set size, the method including determining a CORESET configuration, a search space set configuration, and/or an RB set configuration, determining the search space set configuration includes multiple frequency domain monitoring occasions, identifying a CORESET resource in each of the frequency domain monitoring occasions, determining the CORESET resource is only partially confined within the first RB set, and adjusting a PDCCH-monitoring protocol to improve performance of the CORESET resource.