PDCCH Monitoring Allocation Across Cells for Multi-Cell DCI

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Solution Overview

Problem

Existing technologies face challenges in efficiently performing PDCCH monitoring when DCI is configured to schedule data across multiple cells, as the allocation of PDCCH monitoring tasks to individual cells is not clearly defined.

Innovation Solution

A method and apparatus for determining and performing PDCCH monitoring on specific cells by using first indication information, such as search space set parameters, to allocate PDCCH monitoring tasks based on cell-specific configurations, including CCE aggregation levels and monitoring occasions, thereby optimizing the workload distribution across multiple cells.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If PDCCH monitoring is performed for DCI scheduling data in multiple cells, then the terminal can receive scheduling signaling for multiple cells, but the complexity and overhead of PDCCH monitoring increases

Engineering Contradiction:

Improvemulti-cell scheduling capabilityVSAvoidPDCCH monitoring complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the PDCCH monitoring task by determining a specific first cell for monitoring based on search space set parameters. Instead of monitoring all cells uniformly, the terminal identifies which cell(s) should bear the PDCCH monitoring responsibility for multi-cell scheduling DCI, thereby dividing the monitoring complexity across different cells rather than concentrating it in one cell.

Inventive Principle:

Principle #1Segmentation

2Productivity

If PDCCH monitoring is allocated to specific cells based on search space set parameters, then the monitoring workload is optimized, but the protocol complexity increases

Engineering Contradiction:

ImprovePDCCH monitoring efficiencyVSAvoidprotocol complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements self-service by enabling the terminal to autonomously determine the first cell for PDCCH monitoring based on pre-configured search space set parameters. The terminal uses its own configuration information (search space set parameters) to identify which cell should perform monitoring, eliminating the need for complex network-side coordination or additional signaling to allocate monitoring tasks.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent utilizes parameter changes by leveraging search space set parameters (such as CORESET configuration, search space ID, and monitoring occasions) to dynamically determine the first cell for PDCCH monitoring. By changing or selecting different parameter combinations, the terminal can identify different cells for monitoring without requiring protocol changes, thus optimizing workload while maintaining protocol simplicity.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250386354A1Physical downlink control channel monitoring method, apparatus, and communication device

Publication Date: 2025.12.18 DATANG MOBILE COMM EQUIP CO LTD

AI summary

A PDCCH monitoring method and apparatus and a communication device are provided. The method of embodiments of the present disclosure includes: A terminal determines at least one first cell in which PDCCH monitoring is performed, where the PDCCH monitoring is used for monitoring first DCI, and the first DCI is used for scheduling of transmission data in a plurality of cells. The terminal performs the PDCCH monitoring according to the at least one first cell.