[Paper Review] Design of a 5G Ready and Reliable Architecture for the Smart Factory of the Future

Mathias Strufe, Michael Gundall+4 more|arXiv (Cornell University)|May 13, 2019

Digital Transformation in Industry2 references4 citations

TL;DR

This paper presents the TACNET 4.0 architecture, a unified, 5G-ready framework for smart factories that integrates 5G, TSN, SDN, and industrial Ethernet to enable ultra-reliable, low-latency communication. It achieves seamless interoperability across industrial and mobile networks through a modular, multi-plane design with a Multi-Domain Manager, supporting diverse use cases like automated guided vehicles and predictive maintenance with end-to-end QoS guarantees.

ABSTRACT

The increasing demands for highly individual products as well as for flexible production lines represent new challenges. To address these demands, future plants must be highly flexible and dynamically reconfigurable. Current systems are usually based on wired technologies for the connection of sensors, actuators, and controlling or monitoring devices that allow only very limited dynamics. New applications, such as the use of robots, drones, or reconfigurable production lines, require the exploitation of wireless communication technologies. However, current technologies are not able to meet the high requirements in terms of latency, robustness, resilience and data rate. The introduction of the 5th generation (5G) cellular communication system will meet these requirements for the first time. Besides the use of radio-based solutions in new plants - so-called greenfield scenarios - deploying 5G also represents an efficient migration of existing plants - so-called brownfield scenarios - to Industry 4.0. In order to ensure that the challenging requirements are indeed meet in practical deployments of the new 5G technology, a tailor-made architecture is being developed within the Tactile Internet 4.0 (TACNET 4.0) project. As a basis for the design of the architecture, representative Industry 4.0 application scenarios, which are also be considered by the 3rd Generation Partnership Project (3GPP), were analyzed and compliance with the latest developments in the relevant standardization is also our target. The paper gives an overview of the considered use cases as well as the relevant reference architectures and the design process of the TACNET 4.0 architecture.

Motivation & Objective

• To design a scalable, interoperable industrial communication architecture that integrates 5G with existing industrial networks for Industry 4.0.
• To support critical industrial use cases requiring ultra-reliable, low-latency communication (URLLC) and massive machine-type connectivity (mMTC).
• To enable seamless integration of 5G and legacy industrial communication systems through open interfaces and cross-network adaptation mechanisms.
• To ensure the architecture is usable by both large enterprises and small-to-medium enterprises (SMEs) through modularity and extensibility.
• To develop a holistic, future-proof communication framework that supports end-to-end quality of service (QoS) across heterogeneous networks.

Proposed method

• The architecture is developed through a four-phase design process: use case identification, functional component definition, message sequence chart (MSC) modeling, and iterative refinement.
• The TACNET 4.0 architecture is structured into five planes: User and Control Plane, Management and Orchestration Plane, Service and Application Plane, Security Plane, and the underlying 5G and industrial network infrastructures.
• It integrates 5G radio access networks (RAN), 3GPP Core Network (CN), Software-Defined Networking (SDN), Time-Sensitive Networking (TSN), and Industrial Ethernet (IE) to enable deterministic, low-latency communication.
• A Multi-Domain Manager and orchestrator is introduced to manage device registration, configuration, and QoS provisioning across multiple network domains.
• The architecture employs a layered, modular design with open interfaces to support interoperability between 5G and legacy industrial protocols (e.g., via oneM2M and IIRA principles).
• Security is enforced via a dedicated Security Plane providing device/user authentication, encrypted communication, and secure log storage across all layers.

Experimental results

Research questions

• RQ1 How can 5G wireless technologies be seamlessly integrated with existing industrial communication networks to support real-time, reliable factory automation?
• RQ2 What architectural components and abstractions are required to ensure end-to-end quality of service (QoS) across heterogeneous networks in industrial environments?
• RQ3 How can a unified, scalable, and extensible architecture be designed to serve both large industrial plants and small-to-medium enterprises (SMEs)?
• RQ4 What role does a Multi-Domain Manager play in orchestrating cross-network communication and service provisioning in a 5G-enabled smart factory?
• RQ5 How can security, reliability, and interoperability be jointly ensured in a converged industrial communication architecture?

Key findings

• The TACNET 4.0 architecture successfully integrates 5G, TSN, SDN, and industrial Ethernet into a single, modular, and extensible framework for smart factories.
• The architecture supports critical industrial use cases such as remote-controlled drones, AGV coordination, and predictive maintenance with end-to-end latency below 5 ms and high reliability.
• The Multi-Domain Manager enables centralized orchestration of devices and network functions across 5G and industrial network domains, ensuring consistent QoS.
• The inclusion of a dedicated Security Plane ensures authentication, encrypted communication, and secure logging across all layers of the architecture.
• The architecture is designed to be scalable and adaptable, with modularity allowing for technology replacement and reduced complexity for SMEs.
• The SWOT analysis confirms strong potential for market leadership, with a balanced consortium of academic and industrial partners mitigating risks from emerging technologies and competition.