Dynamic Reference Signal Resource Allocation in 5G NR

Solution Overview

Problem

The existing CSI-RS allocation method in 5G New Radio (NR) is not flexible enough to adapt to changing environments, particularly for terminal devices in motion, as the reference signal resource remains unchanged for a long time, failing to provide seamless mobility.

Innovation Solution

A resource indication method is introduced that allows for dynamic allocation of reference signal resources by grouping them into multiple resource groups, enabling terminal devices to switch between or within these groups, with each group shared by multiple terminal devices, and using resource indication information to notify devices of the allocated resources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If reference signal resource is kept unchanged for a long time, then system overhead is reduced, but adaptability to environment change deteriorates

Engineering Contradiction:

Improvesystem overheadVSAvoidadaptability to environment change

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic reference signal resource allocation by introducing resource indication information that enables terminal devices to switch between multiple reference signal resource groups. This dynamic mechanism allows the system to adapt reference signal resources to changing channel environments while maintaining reasonable overhead control through group-based management.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent divides reference signal resources into multiple resource groups, where each group contains multiple reference signal resources. This segmentation allows flexible switching between groups based on channel conditions while managing overhead efficiently at the group level rather than individual resource level.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If reference signal resource is switched dynamically, then adaptability to environment change is improved, but resource configuration complexity increases

Engineering Contradiction:

Improveadaptability to environment changeVSAvoidresource configuration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic reference signal resource allocation by introducing resource indication information that enables terminal devices to switch between multiple reference signal resource groups. This dynamic mechanism allows the system to adapt reference signal resources to changing channel environments while maintaining reasonable overhead control through group-based management.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent adds a group dimension to reference signal resource management, organizing resources into multiple groups where each group contains multiple resources. This dimensional organization simplifies the switching process by enabling group-level selection rather than individual resource selection, thereby reducing configuration complexity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If multiple reference signal resource groups are introduced, then resource configuration flexibility is improved, but system overhead increases

Engineering Contradiction:

Improveresource configuration flexibilityVSAvoidsystem overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent divides reference signal resources into multiple resource groups, where each group contains multiple reference signal resources. This segmentation allows flexible switching between groups based on channel conditions while managing overhead efficiently at the group level rather than individual resource level.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent adds a group dimension to reference signal resource management, organizing resources into multiple groups where each group contains multiple resources. This dimensional organization simplifies the switching process by enabling group-level selection rather than individual resource selection, thereby reducing configuration complexity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11177920B2Resource indication method, and related device and system

Publication Date: 2021.11.16 HUAWEI TECH CO LTD

AI summary

This application discloses a resource indication method, and a related device and system. The method includes: generating resource indication information, where the resource indication information is used to indicate a reference signal resource allocated to a terminal device in a reference signal resource group in which the terminal device is located among a plurality of reference signal resource groups; and sending the resource indication information. According to the foregoing solution, flexibility of configuring the reference signal resource can be improved, so that better resource sharing is implemented and resource overheads are reduced.