5G Base Station Functional Split Mode Selection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

5G mobile networks face challenges in flexible and efficient resource sharing and parameter adjustment across hybrid communication services, particularly in the deployment of central and distributed units of base stations, and in providing joint transmission services with limited resources.

Innovation Solution

A communication system that includes a base station with distributed units and a central unit, where a main processor selects a functional split mode based on user equipment communication quality requirements, choosing between centralized and distributed control modes to optimize resource allocation and scheduling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a fixed functional split mode is used in 5G base stations, then device complexity is reduced, but adaptability to different communication service types deteriorates

Engineering Contradiction:

Improvebase station architecture complexityVSAvoidadaptability to hybrid communication services

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic functional split mode selection that adapts to different communication service types (eMBB, uRLLC). The system transitions from a fixed architecture to a dynamic one where the main processor selects between centralized and distributed control modes based on real-time service requirements, achieving both simplified operation and high adaptability

Inventive Principle:

Principle #15Dynamics

2Productivity

If centralized control mode is used, then resource allocation efficiency is improved, but communication delay increases

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidcommunication scheduling delay

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent segments the control function into centralized control mode (for resource allocation efficiency) and distributed control mode (for low delay). The main processor dynamically selects the appropriate mode based on service type, allowing resource allocation efficiency to be improved for eMBB services while communication delay is minimized for uRLLC services through distributed control

Inventive Principle:

Principle #1Segmentation

3Loss of time

If distributed control mode is used, then communication delay is reduced, but resource allocation efficiency deteriorates

Engineering Contradiction:

Improvecommunication scheduling delayVSAvoidresource allocation efficiency

Core Design Contradiction:

Loss of timeVSProductivity

Solution Approach 1:

The system dynamically switches between distributed control mode (for low delay applications like uRLLC) and centralized control mode (for efficient resource allocation like eMBB). This dynamic adaptation allows the system to reduce communication delay when needed while maintaining resource allocation efficiency for other service types

Inventive Principle:

Principle #15Dynamics

4Device complexity

If functional split mode is not dynamically selected, then device complexity is reduced, but communication quality deteriorates

Engineering Contradiction:

Improvecontrol mode management complexityVSAvoidcommunication quality

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent implements dynamic functional split mode selection based on communication quality requirements. The main processor automatically selects between centralized and distributed control modes according to real-time service requirements, ensuring communication quality is maintained while managing complexity through automated decision-making algorithms

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11363542B2Communication system, method and computer program product therefor

Publication Date: 2022.06.14 NAT YANG MING CHIAO TUNG UNIV

AI summary

A communication system includes a base station. The base station includes a plurality of distributed units (DUs), a central unit (CU) and a main processor. The main processor selects a mode corresponding to user equipment from a centralized control mode (CM) and a distributed control mode (DM) according to the current communication quality of the user equipment, wherein a functional split mode (FSM) includes the centralized control mode (CM) and the distributed control mode (DM).