NR DCI Field Design for Multi-Object Scheduling Overhead

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Solution Overview

Problem

In the New Radio (NR) system, the transmission of Downlink Control Information (DCI) requires significant overhead due to each piece of DCI scheduling only one target object, leading to inefficient communication between terminals and network side devices.

Innovation Solution

The method involves receiving first DCI that schedules multiple target objects and determining feature information of at least some of the information indication fields, allowing the terminal to reduce DCI transmission overhead by processing a single DCI for multiple objects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If each piece of DCI schedules one target object, then scheduling accuracy is maintained, but DCI transmission overhead increases

Engineering Contradiction:

Improvescheduling accuracyVSAvoidDCI transmission overhead

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The patent merges multiple DCI messages into a single DCI message that can schedule multiple target objects simultaneously. The DCI includes a target object field that indicates multiple target objects, allowing one DCI to replace multiple separate DCI messages, thereby reducing transmission overhead while maintaining scheduling accuracy through precise indication of each target object's characteristics

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The DCI message is designed with multi-functionality to schedule different types of target objects (e.g., different carriers, cells, or bandwidth parts) using a single unified DCI structure. The target object field can dynamically indicate various target objects based on configuration, making the DCI versatile while reducing the need for multiple specialized DCI messages

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple DCI are transmitted to schedule multiple target objects, then scheduling flexibility is improved, but system complexity increases

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple DCI messages are merged into a single DCI that schedules multiple target objects. The DCI structure includes a target object field that can indicate different combinations of target objects, providing scheduling flexibility while reducing system complexity by eliminating the need to process multiple separate DCI messages

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The DCI message employs dynamic fields that can be configured to indicate different target objects based on current communication needs. The target object field and related indication fields can be dynamically adjusted through RRC configuration or MAC CE signaling, allowing the system to adapt to different scheduling scenarios without increasing structural complexity

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12507254B2Information determining method, information sending method, terminal, and network side device

Publication Date: 2025.12.23 VIVO MOBILE COMM CO LTD

AI summary

This application provides an information determining method, an information sending method, a terminal, and a network side device. The information determining method includes: receiving first DCI, where the first DCI may schedule multiple target objects, and determining feature information of at least some of information indication fields in the first DCI.