Flexible CORESET Configuration for Narrowband UE Control

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Solution Overview

Problem

Existing wireless communication systems face challenges in supporting diverse UE device types with varying bandwidth capabilities, as legacy CORESET configurations often do not accommodate narrowband UEs, leading to incompatibility and reduced performance.

Innovation Solution

Implement flexible CORESET configurations that support multiple UE device types by allowing more than three symbols in the time domain, enabling non-interleaving/interleaving in the frequency domain, flexible aggregation levels, slot-level repetitions, and frequency hopping, while maintaining compatibility with legacy designs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If legacy CORESET configurations are used, then compatibility with existing systems is maintained, but support for narrowband UEs and diverse device types is insufficient

Engineering Contradiction:

Improvesupport for diverse UE device typesVSAvoidCORESET configuration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The CORESET configuration is made dynamic by allowing flexible adjustment of the number of symbols in the time domain (not limited to three symbols), enabling the system to adapt to different UE device types including narrowband UEs. The configuration can be changed based on device capabilities and network requirements, providing versatility while maintaining manageable complexity through standardized procedures.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies parameter changes by modifying CORESET configuration parameters such as the number of symbols, frequency domain allocation, and aggregation levels to accommodate different UE device types. By changing these parameters dynamically, the system achieves broader adaptability without fundamentally redesigning the CORESET structure, thus managing complexity effectively.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If flexible CORESET configurations are implemented to support narrowband UEs, then adaptability improves, but system complexity increases

Engineering Contradiction:

Improvenarrowband UE supportVSAvoidconfiguration management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the CORESET configuration into multiple independent parameters (time domain symbols, frequency domain allocation, aggregation levels, hopping configurations) that can be individually adjusted for different UE types. This segmentation allows narrowband UE support through specific parameter combinations while keeping overall configuration management complexity manageable by treating each parameter separately rather than as a monolithic structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The CORESET configuration structure is designed to be universal, supporting both legacy wideband UEs and new narrowband UEs through a unified configuration framework. The same CORESET mechanism serves multiple device types by adjusting parameters, avoiding the need for separate configuration systems and thereby managing complexity while achieving broad adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Productivity

If legacy CORESET configurations are used, then configuration simplicity is maintained, but spectral efficiency and performance are reduced for diverse devices

Engineering Contradiction:

Improvespectral efficiencyVSAvoidCORESET configuration flexibility

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent improves spectral efficiency by optimizing CORESET configuration parameters such as the number of symbols (beyond three), frequency domain resource allocation, and aggregation levels based on UE device type and channel conditions. These parameter changes enable better resource utilization and spectral efficiency while maintaining manageable configuration flexibility through standardized adjustment procedures.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If flexible aggregation levels and frequency hopping are enabled, then coverage is enhanced, but device complexity increases

Engineering Contradiction:

ImprovecoverageVSAvoidprocessing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent enhances coverage by dynamically enabling flexible aggregation levels and frequency hopping based on channel conditions and UE capabilities. The system adjusts aggregation levels to match signal strength requirements and employs frequency hopping to combat fading, achieving improved reliability and coverage while managing processing complexity through conditional activation and standardized algorithms.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260032694A1Control resource set configurations for different device types

Publication Date: 2026.01.29 QUALCOMM INC

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 control resource set (CORESET) configuration that indicates one or more CORESET parameters associated with a UE device type. The UE may monitor at least one physical downlink control channel (PDCCH) candidate location based at least in part on the CORESET configuration associated with the UE device type. Numerous other aspects are described.