Aperiodic CSI Transmission on PUCCH via Dynamic DCI Configuration

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Solution Overview

Problem

There is no specific scheme for transmitting aperiodic channel state information (CSI) on the physical uplink control channel (PUCCH) in new radio (NR) systems, which affects transmission performance.

Innovation Solution

A method is provided where a terminal device receives downlink control information (DCI) containing trigger and configuration information for transmitting aperiodic CSI on the PUCCH, allowing flexible adjustment of transmission parameters such as resource configuration, power control, reference signal resources, and quasi-co-location indications to improve transmission performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If aperiodic CSI is transmitted on PUCCH in NR system, then channel state information can be reported, but there is no specific transmission scheme which affects transmission performance

Engineering Contradiction:

Improvetransmission performanceVSAvoidtransmission scheme

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by dynamically configuring PUCCH transmission parameters including resource configuration, power control commands, reference signal resources, and QCL indications through DCI signaling. This allows the system to adapt transmission parameters based on actual channel conditions and reporting requirements, thereby improving transmission performance without requiring a completely new transmission scheme.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If PUCCH transmission parameters are fixed, then implementation is simple, but transmission performance cannot be optimized

Engineering Contradiction:

Improvetransmission performanceVSAvoidparameter adjustment flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamics by making PUCCH transmission parameters adjustable and adaptable through DCI (Downlink Control Information) signaling. The network can dynamically configure resource configuration information, power control commands, reference signal resources, and QCL indications based on real-time channel conditions and CSI reporting requirements, enabling optimal transmission performance while maintaining implementation simplicity.

Inventive Principle:

Principle #15Dynamics

3Productivity

If no configuration information is provided in DCI, then DCI structure is simple, but PUCCH transmission cannot be optimized

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidDCI structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the DCI structure into distinct information fields: trigger information for CSI reporting and configuration information for PUCCH parameters. This segmentation allows the DCI to convey multiple types of control information in an organized manner, enabling optimized PUCCH transmission while keeping the DCI structure manageable and not excessively complex.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11265057B2Method, terminal device and network device for transmitting physical uplink control channel (PUCCH)

Publication Date: 2022.03.01 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

A method for transmitting physical uplink control channel (PUCCH) includes: receiving, by a terminal device, downlink control information (DCI) sent by a network device, the DCI including trigger information of aperiodic channel state information (CSI) and configuration information of a PUCCH carrying the aperiodic CSI; and transmitting, by the terminal device, the aperiodic CSI on the PUCCH according to the configuration information of the PUCCH when the trigger information triggers the terminal device to report the aperiodic CSI.