Beam Management DCI Framework for Low-Overhead CSI Triggering

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Solution Overview

Problem

The overhead in beam management and CSI measurement procedures, particularly in mmWave bands, leads to reduced downlink throughput due to excessive control channel and shared channel signaling, especially when multiple users are involved.

Innovation Solution

Implement a common control signal for triggering the P3 procedure and CSI measurement, utilizing a common DCI format to reduce signaling overhead and enable efficient beam selection and CSI reporting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate control signals are used for P3 procedure and CSI measurement, then each procedure can be independently configured and executed, but control signaling overhead increases excessively

Engineering Contradiction:

Improveindependent configuration capabilityVSAvoidcontrol signaling overhead

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines the triggering of P3 procedure and CSI measurement into a single DCI (Downlink Control Information) signal. This merging approach allows both procedures to be initiated simultaneously through one control signal, reducing the overall control signaling overhead while maintaining the ability to independently configure each procedure through the DCI parameters.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The DCI signal is designed with multi-functionality to serve dual purposes: triggering both the P3 procedure and CSI measurement. By making the control signal universal, the system eliminates the need for separate dedicated control signals for each procedure, thereby reducing signaling overhead while preserving configuration flexibility.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If multiple separate control signals are transmitted for beam management and CSI measurement, then each signal can be optimized for its specific function, but downlink throughput is reduced due to excessive signaling

Engineering Contradiction:

Improveprocedure execution reliabilityVSAvoiddownlink throughput

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

By merging the control functions into a single DCI signal, the patent reduces the number of separate control transmissions required. This consolidation maintains reliable execution of both P3 and CSI measurement procedures while minimizing the time and resources consumed by control signaling, thereby improving downlink throughput.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The unified DCI approach allows the system to transition more efficiently from control signaling to data transmission. By eliminating gaps between separate control signals and their corresponding procedures, the system maintains continuous useful action flow, reducing idle time and improving overall downlink throughput.

Inventive Principle:

Principle #20Continuity of useful action

3Manufacturing precision

If separate DCI formats are used for P3 and CSI measurement, then each format can be optimized for its specific parameters, but control channel resources are consumed excessively

Engineering Contradiction:

Improveparameter optimization precisionVSAvoidcontrol channel resources

Core Design Contradiction:

Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The patent creates a universal DCI format that can accommodate parameters for both P3 procedure and CSI measurement. This multi-functional DCI design allows the system to optimize parameters for each procedure while using a single control channel resource allocation, thereby reducing the quantity of control channel resources consumed compared to separate DCI formats.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Within the unified DCI structure, the patent segments the parameters into distinct fields for P3 and CSI measurement configurations. This segmentation allows each procedure's parameters to be optimized independently while being transmitted within a single control signal, efficiently utilizing control channel resources.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250365721A1Beam management, CSI triggering, and CSI-RS framework

Publication Date: 2025.11.27 SAMSUNG ELECTRONICS CO LTD

AI summary

Apparatuses and methods for beam management, channel state information (CSI) triggering, and CSI reference signal (CSI-RS) framework. A method performed by a user equipment (UE) includes receiving, from a base station (BS), downlink control information (DCI) associated with a UE beam selection procedure and a CSI measurement procedure; determining, based on receipt of the DCI, to perform the UE beam selection procedure and the CSI measurement procedure; and performing, based on receipt of signals from the BS, the UE beam selection procedure and the CSI measurement procedure.