Network solution for e-charging infrastructure

How an Innovative Networking Solution is Revolutionizing EV Charging Infrastructure in Underground Garages.

Electromobility is rapidly gaining momentum. More and more conventional combustion vehicles are being replaced by zero-emission electric cars. However, this trend also puts increasing pressure on operators of residential complexes, commercial properties, and public facilities to provide powerful charging infrastructures. Simply installing charging stations is no longer sufficient – without a stable connection to the backend cloud, reliable monitoring, control, and billing of charging points is not possible.

This was precisely the challenge in a recent project by DIGITROL GmbH, a leading provider of future-oriented e-mobility charging solutions in the Rhine-Main-area: The installed charging stations in an underground garage could not achieve sufficient signal strength via their standard SIM cards. Without a stable connection, charging operations could not be reliably managed, leading to disruptions and inefficient processes.

A wired network connection would have required significant investment due to the building conditions. A standard SIM card solution failed because of poor network coverage. A system was needed that could function independently of existing cable networks, offer maximum availability, and be easy to manage.

Elektroverteilung mit Lasttrennschaltern, Stromzählern und Sicherungen für eine Ladeinfrastruktur in einem Technikraum, professionell montiert.

The Solution: An Intelligent, Fail-Safe Network Infrastructure

In collaboration with ime, DIGITROL developed a networking solution specifically tailored to the requirements of charging infrastructures in challenging environments. By strategically deploying high-performance cellular routers, high-gain antennas, and a centralized remote management system, a solution was created that ensures the reliable operation of the charging stations on a permanent basis.

Key Components at a Glance:

RUT241 LTE Cellular Router – Industrial-grade router for stable and secure mobile connections
Panorama WMMG-7-38-5SP MiMo LTE-Antenne – Optimized signal reception even in deep garage areas
TAP100 Access Points & TSW100 Switch – Enables seamless internal networking
DigitalSIM Digitale Multi-Network SIM Cards – Automatically use the most powerful mobile network available
RMS Remote-Management-System – Centralized monitoring and optimization of the network infrastructure

Teltonika TAP an einer Kabeltrasse unter der Decke – zur Überwachung von Umgebung oder Infrastrukturdaten.

Offener Netzwerkschrank mit strukturierter Datenverkabelung und Patchpanel, installiert an der Wand in einem Technikraum zur Steuerung von Ladeinfrastruktur.

First, a site analysis was conducted to determine the optimal positions for routers and antennas. Then, a network infrastructure was implemented to ensure continuous connectivity.

The combination of high-performance hardware and intelligent software resulted in a completely independent, high-availability solution that can be monitored and controlled in real time.

A targeted use of the RUT241-Router and Wi-Fi integration of the charging stations led to additional cost savings since only one SIM contract is required—instead of equipping each charging station with its own SIM card.

The Result: Maximum Stability, Minimal Downtime

The success of this custom-built network solution became evident within the first few months of implementation. The charging infrastructure ran smoothly and reliably, without the previous issues caused by connection dropouts. More than ten installed charging points were seamlessly integrated into the system, enabling efficient and uninterrupted operation of the entire installation. Within three months, only a single connection disruption occurred—clear proof of the new architecture’s stability.
A major advantage proved to be the central control via the Remote-Management-System, which enables continuous monitoring and direct adjustment of all network components. Operators can react to changes in real time without needing to be on-site, significantly simplifying maintenance. The system is also easily expandable, allowing it to accommodate future demands—a key factor in the sustainable operation of modern EV charging infrastructures.

Zwei Elektroauto-Ladestationen in einer Tiefgarage, bereit zum Laden – Teil einer modernen Ladeinfrastruktur für E-Mobilität.

DIGITROL and ime – Strong Partners for Powerful Charging Infrastructure

The success of this project is the result of a close and strategic partnership between DIGITROL and ime. While DIGITROL, as a charging infrastructure expert, analyzed the specific requirements of the property and defined the framework for a functional solution, ime contributed its extensive expertise in industrial networking technology.
Together, the partners developed a high-performance, customized infrastructure that not only solved the technical challenges but also remains scalable and future-proof.

ime provided technical consulting and supplied specially configured hardware adapted to the unique conditions on-site. Through the careful selection and combination of high-performance components such as LTE routers, high-gain antennas, and access points, a stable, fail-safe network connection was realized—even in an environment traditionally problematic for mobile signals. A decisive advantage was the ability to monitor and manage the entire network infrastructure via a centralized remote system. This significantly reduced maintenance efforts and eliminated the need for on-site troubleshooting in most cases.

The result is a holistic infrastructure that ensures reliable and uninterrupted connection of charging points to the backend cloud. Operators benefit from high operational reliability, minimal maintenance requirements, and a solution that can grow flexibly with the increasing demands of electromobility.

Thanks to intelligent network integration, robust hardware, and efficient remote management, operators of EV charging stations can rely on a long-term, dependable infrastructure – a key contribution to the sustainable advancement of electric mobility.

About ime mobile solutions:

Companies are looking for secure networking solutions for their machines, systems, buildings and products, which are sometimes distributed worldwide. ime mobile solutions offers a comprehensive portfolio of networking technology, suitable software and services. The result: control over all “things” in a reliable environment. Customers of the value-added distributor, which was founded in 1992, benefit from specialist knowledge from both worlds: information technology and operational technology. In advanced workshops and training courses, they not only learn about IoT and Industrial IoT (IIoT), but also master them. As a result, they can operate their solution themselves and retain control over their installation.

Do you have this or a similar problem? Then contact us, we will be happy to advise you.

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