SDN Virtual Network Slice Construction for Private 5G

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Solution Overview

Problem

Current private 5G network systems face limitations due to complex configurations and high costs, as they are based on public network systems, which restrict their spread and operation, especially in industries like smart factories and smart offices.

Innovation Solution

A method for dynamically constructing an end-to-end virtual dedicated network slice across entire wired and wireless networks using SDN-based OpenFlow technology, allowing for efficient packet forwarding through a dedicated network tree and OpenFlow rules, enabling complete isolation and reducing latency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a public network-based system is used for private 5G networks, then network openness and vendor independence are improved, but device complexity and operation difficulty increase

Engineering Contradiction:

Improvenetwork opennessVSAvoidconfiguration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the network into multiple virtual dedicated network slices, each independently configured and managed. This allows the network to maintain openness while simplifying individual slice configurations, as each slice can be independently optimized without affecting the entire network system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an SDN controller as an intermediary that automatically generates and manages OpenFlow rules for packet forwarding. This mediator handles the complexity of network configuration and management, reducing the operational burden on users while maintaining network openness and flexibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a public network-based system is used for private 5G networks, then network openness is improved, but operation difficulty increases

Engineering Contradiction:

Improvenetwork opennessVSAvoidoperation simplicity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent implements automated self-service mechanisms where the SDN controller automatically generates OpenFlow rules based on network conditions and requirements. This eliminates manual configuration and management, significantly simplifying operations while maintaining the openness and flexibility of the public network-based system.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system incorporates feedback mechanisms where the SDN controller continuously monitors network status and dynamically adjusts OpenFlow rules accordingly. This automated feedback loop simplifies operations by eliminating manual intervention while maintaining network openness and adaptability.

Inventive Principle:

Principle #23Feedback

3Stability of the object's composition

If traditional packet forwarding is used in 4G networks, then network compatibility is maintained, but transmission path determination time increases

Engineering Contradiction:

Improvenetwork compatibilityVSAvoidprocessing time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The patent replaces traditional distributed packet forwarding mechanisms with SDN-based centralized control using OpenFlow rules. This substitution enables ultra-high-speed packet forwarding by offloading processing to dedicated hardware, reducing determination time while maintaining network compatibility through standardized protocols.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system pre-establishes OpenFlow rules and transmission paths before data transmission occurs. This preliminary configuration allows packets to be forwarded immediately according to pre-computed paths, eliminating real-time determination delays while maintaining compatibility with existing network infrastructures.

Inventive Principle:

Principle #10Preliminary action

4Productivity

If virtual dedicated network slices are constructed dynamically, then resource utilization efficiency is improved, but network control complexity increases

Engineering Contradiction:

Improveresource utilization efficiencyVSAvoidnetwork control complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent introduces an SDN controller as an intermediary that automatically manages the dynamic construction and resource allocation of virtual dedicated network slices. This mediator handles the complexity of slice management, enabling high resource utilization while keeping control operations simplified through automated rule generation and enforcement.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20230065874A1Dynamic construction of virtual dedicated network slice based on software-defined network

Publication Date: 2023.03.02 TRENTO SYST INC

AI summary

Disclosed are a network control device and an operation method of the network control device for dynamically constructing an end-to-end virtual dedicated network slice based on a software-defined network (SDN) over the entire wired and wireless network section of a private network and a public network.