Dual CORESET0 Configuration for 5G NR Wideband Narrowband UEs

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Solution Overview

Problem

Existing 5G NR systems face challenges in efficiently configuring control resource sets (CORESET0) to support both wideband and narrowband user equipments (UEs), leading to reduced physical downlink control channel capacity and increased blocking probability due to limited sharing of resources.

Innovation Solution

A dual CORESET0 configuration is introduced, comprising a first configuration for narrowband UEs and a second configuration for wideband UEs, allowing separate resource block sets and eliminating frequency interleaving to optimize resource utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single CORESET0 configuration is used for both wideband and narrowband UEs, then device complexity is reduced, but PDCCH capacity is reduced and blocking probability increases

Engineering Contradiction:

ImproveCORESET0 configuration complexityVSAvoidPDCCH capacity

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent divides the single CORESET0 configuration into two separate configurations: a first CORESET0 configuration for narrowband UEs and a second CORESET0 configuration for wideband UEs. This segmentation allows each configuration to be optimized for its specific UE type, thereby increasing PDCCH capacity and reducing blocking probability while maintaining manageable system complexity through structured separation.

Inventive Principle:

Principle #1Segmentation

2Productivity

If frequency interleaving is applied in CORESET0, then resource distribution is improved, but resource utilization efficiency decreases for narrowband UEs

Engineering Contradiction:

Improveresource distribution efficiencyVSAvoidavailable resource blocks

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The patent applies different frequency resource allocation strategies to different UE types: the first CORESET0 configuration for narrowband UEs uses contiguous resource blocks without frequency interleaving to maximize available resources and simplify processing, while the second CORESET0 configuration for wideband UEs incorporates frequency interleaving to improve distribution and utilization across the broader bandwidth.

Inventive Principle:

Principle #3Local quality

3Reliability

If CORESET0 is configured for wideband UEs, then PDCCH capacity increases, but compatibility with narrowband UEs is reduced

Engineering Contradiction:

ImprovePDCCH capacityVSAvoidUE type compatibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent creates a universal system that supports both narrowband and wideband UEs by configuring two distinct CORESET0 configurations that can coexist in the network. The network entity can select the appropriate configuration based on UE capability, allowing the system to maintain compatibility with both UE types while providing optimized service to each.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250211396A1Coreset0 for wideband and narrowband ues

Publication Date: 2025.06.26 QUALCOMM INC

AI summary

Method and apparatus for a CORESET configuration for wideband and narrowband UEs. The apparatus transmits, to one or more types of UEs an indication of a CORESET0 configuration comprising a first CORESET0 configuration based on one or multiple RB sets or a second CORESET0 configuration without a frequency interleaving. The apparatus communicates with the one or more types of UEs based on at least one of the first CORESET0 configuration or the second CORESET0 configuration. The apparatus may transmit a CORESET0 based on the first CORESET0 configuration and having the frequency interleaving within each of the M RB sets.