Cross-BWP Scheduling Offset Thresholds for Numerology Mismatch

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Solution Overview

Problem

The challenge of accurately determining a scheduling offset threshold during cross-carrier or cross-BWP scheduling in wireless communications systems has not been adequately addressed, which affects the correct reception of physical downlink shared channels.

Innovation Solution

A method for determining a scheduling offset threshold based on preset rules, where the threshold is derived from the numerology of the carrier or bandwidth part (BWP) on which the PDCCH and PDSCH are located, ensuring correct QCL information determination and reception of the PDSCH.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If cross-carrier or cross-BWP scheduling is implemented, then scheduling flexibility and system capacity are improved, but the accuracy of scheduling offset threshold determination deteriorates

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidscheduling offset threshold determination accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent applies parameter changes by selecting the scheduling offset threshold based on the numerology of the carrier or BWP where the PDCCH is located. Different numerologies (subcarrier spacing values) correspond to different scheduling offset thresholds, allowing the system to adapt the threshold parameter to match the specific numerological configuration of the scheduling carrier, thereby maintaining accuracy under cross-carrier or cross-BWP scheduling conditions

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If the scheduling offset threshold is determined without considering numerology differences, then the determination process is simplified, but the QCL information determination accuracy deteriorates

Engineering Contradiction:

Improvethreshold determination process complexityVSAvoidQCL information determination accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent applies local quality by tailoring the scheduling offset threshold selection to the specific local context of the PDCCH carrier's numerology. Instead of using a universal threshold, the system selects thresholds locally adapted to the numerology (e.g., 14 slots for 15kHz subcarrier spacing, 28 slots for 30kHz subcarrier spacing), ensuring accurate QCL information determination for each specific carrier configuration

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP3823379B1Scheduling parameter determination method and scheduling parameter configuration method, terminal, and network-side device

Publication Date: 2025.12.31 VIVO MOBILE COMM CO LTD

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AI summary

Some embodiments of this disclosure provide a method for determining a scheduling parameter, a method for configuring a scheduling parameter, a terminal, and a network-side device. The method for determining a scheduling parameter is applied to a terminal and includes: determining a scheduling offset threshold for current use according to a preset rule when a carrier or BWP on which a PDCCH is located and a carrier or BWP on which a PDSCH scheduled by the PDCCH is located have different numerologies.