RedCap BWP Sub-Band Mapping for SIB and Paging Reception

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Solution Overview

Problem

Reduced-capability (RedCap) UEs are unable to monitor the frequency range spanned by conventional initial CORESET0, which limits their ability to receive system information blocks (SIBs) and other system information (OSI) due to their limited processing capabilities.

Innovation Solution

Configuring RedCap UEs with an initial bandwidth part (BWP) and enabling them to determine sub-bands within this BWP for receiving SIBs and additional sub-bands for OSI and paging messages, using sub-band indices and control messages to facilitate communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If RedCap UEs use conventional initial CORESET0 configuration, then system compatibility is maintained, but RedCap UEs cannot monitor the frequency range due to limited processing capabilities

Engineering Contradiction:

Improvecompatibility with existing systemsVSAvoidability to receive system information

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent divides the initial BWP into multiple sub-bands and configures RedCap UEs to monitor only specific sub-bands (e.g., first sub-band for SIB, second sub-band for OSI) rather than the entire frequency range. This segmentation allows RedCap UEs with limited processing capabilities to successfully receive system information by focusing monitoring resources on smaller, manageable frequency portions.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If RedCap UEs monitor a reduced frequency range, then processing capability requirements are met, but the ability to receive all system information is limited

Engineering Contradiction:

Improveprocessing capability alignmentVSAvoidsystem information reception

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The patent implements dynamic sub-band configuration where the network can flexibly assign different sub-bands for different types of system information (SIB, OSI, paging) based on UE capabilities and network conditions. This dynamic allocation ensures that RedCap UEs can receive all necessary system information across multiple sub-bands while maintaining processing feasibility through distributed monitoring.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If conventional CORESET0 is used for all UEs, then system simplicity is maintained, but RedCap UEs experience monitoring failures

Engineering Contradiction:

Improveconfiguration complexityVSAvoidmonitoring success rate

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent applies local quality by providing differentiated initial BWP configurations tailored to RedCap UEs' specific capabilities. Instead of a uniform CORESET0 configuration for all UEs, the network configures RedCap UEs with customized sub-band allocations within the initial BWP, optimizing monitoring performance for devices with limited processing capabilities while maintaining standard configurations for other UEs.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250386332A1Frequency resource configuration for system information and paging for enhanced reduced-capability user equipments

Publication Date: 2025.12.18 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described. A user equipment (UE) is configured to receive a first control message indicating a downlink bandwidth part (BWP) spanning a set of sub-bands in a frequency domain. The UE receives a system information block (SIB) within a first sub-band selected from the set of sub-bands based on a sub-band index associated with the first sub-band. The UE monitors, based on the SIB, a second sub-band for control signaling that schedules the UE to receive additional system information, and receives a second control message within the second sub-band based on monitoring the second sub-band, where the second control message schedules the UE to receive the additional system information.