Primary Cell Cross-Carrier Scheduling Configuration

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In 5G communication systems, primary cells (PCells) are restricted in their PDCCH resources due to bandwidth limitations in 4G systems, leading to high control signaling loads.

Innovation Solution

Configuring cross-carrier scheduling configuration information allows a primary cell to support self-scheduling and cross-carrier scheduling by a secondary cell (SCell), thereby reducing the demand for control resources and improving scheduling flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the primary cell uses self-scheduling in 5G system with DSS, then scheduling flexibility is improved, but control signaling load increases due to restricted PDCCH resources

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidcontrol signaling load

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent introduces cross-carrier scheduling as an intermediary mechanism where the SCell acts as a mediator to schedule the PCell. By configuring cross-carrier scheduling configuration information, the SCell can transmit downlink control information for the PCell, effectively reducing the PDCCH resource burden on the PCell while maintaining scheduling flexibility through the carrier aggregation framework

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the primary cell supports both self-scheduling and cross-carrier scheduling by SCell, then scheduling flexibility is improved, but device complexity increases

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidconfiguration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements multi-functionality by enabling the primary cell to support both self-scheduling and cross-carrier scheduling by SCell simultaneously. The cross-carrier scheduling configuration information is designed to be optional and can be selectively activated, allowing the system to adapt between different scheduling modes without requiring complete redesign of the existing self-scheduling framework

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces dynamic configuration capability where the cross-carrier scheduling parameters (such as schedulingCellId and cif-InSchedulingCell) can be configured and adjusted based on system conditions. This dynamic approach allows the network to optimize scheduling flexibility while managing configuration complexity by activating cross-carrier scheduling only when beneficial

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12267828B2Configuration method and apparatus for scheduling primary cell, and device and storage medium

Publication Date: 2025.04.01 ZTE CORP

AI summary

Provided are a configuration method for scheduling a primary cell, a configuration apparatus for scheduling a primary cell, a device and a storage medium. The configuration method for scheduling a primary cell includes: configuring cross-carrier scheduling configuration information of a cell, such that a primary cell supports self-scheduling and being cross-carrier scheduled.