Multi-Cell SPS and Configured Grant Scheduling With Unified DCI

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Solution Overview

Problem

Existing wireless communication systems lack efficient mechanisms for multi-cell scheduling of semi-persistent scheduling (SPS) and configured grant (CG) physical uplink/downlink shared channels (PUSCH/PDSCH) to optimize spectrum utilization in fragmented and scattered frequency bands, leading to increased control overhead and reduced flexibility.

Innovation Solution

Implement multi-cell scheduling DCI for SPS PDSCH and CG PUSCH, allowing simultaneous scheduling across multiple cells with shared or separate bit fields to balance efficiency and flexibility, and incorporating mechanisms for HARQ-ACK feedback and TCI updates without PDSCH.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If single-cell scheduling is used for SPS PDSCH and CG PUSCH, then device complexity is reduced, but spectral efficiency and resource utilization deteriorate in fragmented frequency bands

Engineering Contradiction:

Improvescheduling complexityVSAvoidspectral efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent combines multiple cell scheduling into a single DCI message, merging the scheduling of SPS PDSCH and CG PUSCH across multiple cells. This allows the system to achieve multi-cell spectral efficiency while maintaining manageable device complexity by consolidating control information into one unified DCI structure rather than requiring separate DCI for each cell.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The DCI message is designed with universal applicability to schedule multiple cells simultaneously. The multi-cell scheduling DCI structure can dynamically indicate different cells and resource allocations, making it a multi-functional control mechanism that adapts to various fragmented frequency band configurations while maintaining a single standardized control format.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If multi-cell scheduling DCI is implemented, then spectral efficiency and flexibility improve, but control overhead increases

Engineering Contradiction:

Improvespectral efficiencyVSAvoidcontrol overhead

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The multi-cell scheduling DCI is segmented into distinct fields: a first DCI field for SPS PDSCH scheduling and a second DCI field for CG PUSCH scheduling. This segmentation allows independent optimization of each field, enabling the system to include only necessary information for each scheduling type and reduce redundant control overhead while maintaining comprehensive multi-cell scheduling capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The DCI structure employs dynamic indication mechanisms where the first and second DCI fields can dynamically indicate different cells, resource allocations, and modulation and coding schemes based on current network conditions. This dynamic adaptability allows the control overhead to be optimized for each specific scheduling scenario rather than provisioning for maximum possible overhead in all cases.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If separate DCI messages are used for each cell, then scheduling flexibility is maintained, but control overhead and processing complexity increase

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidprocessing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple cell scheduling operations into a single DCI message that simultaneously schedules SPS PDSCH and CG PUSCH across multiple cells. This consolidation maintains scheduling flexibility through dynamic cell indication within the unified DCI while reducing processing complexity by eliminating the need to handle multiple separate DCI messages and their associated processing streams.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention adds a multi-cell dimension to the traditional single-cell DCI structure by incorporating cell indication fields that can specify multiple cells. This dimensional extension allows the DCI to operate in a higher-dimensional space where multiple cells are scheduled simultaneously, maintaining the flexibility of cell-specific scheduling while reducing the number of control messages from multiple separate DCI to one unified multi-cell DCI.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20260005799A1Activation and deactivation of semi-persistent scheduling using multi-cell techniques

Publication Date: 2026.01.01 INTEL CORP

AI summary

This disclosure describes systems, methods, and devices related to semi-persistent scheduling (SPS) or configured grant (CS). A device may decode a configuration for a Downlink Control Information (DCI) format for multi-cell scheduling. The device may detect the DCI format. The device may validate the DCI based on whether it is scrambled with a CS-RNTI or a specific RNTI. The device may activate a semi-persistent scheduling physical downlink shared control channel (SPS PDSCH) reception or a Type 2 configured grant physical uplink shared channel (CG PUSCH) transmission. The device may release for the SPS PDSCH reception or the CG PUSCH transmission based on the validation of the DCI.