Construction equipment must operate with a centimeter or even millimeter accuracy. GNSS sensors, for positioning, support construction equipment operators. Correction values are transmitted to all machine control systems in real-time via a 5G campus network to improve the accuracy of the position calculation. At the same time, live data from the construction site is transmitted to management systems for documentation and billing. For that, the neutral host approach is used. It is a new and cost-saving option of 5G technology that allows network infrastructure to be shared by companies and multiple network operators. The campus network also guarantees data sovereignty for the construction company.
Live video streams are transmitted via the 5G campus network to check and control the positioning process and for safety monitoring. The flexible use of cameras also simplifies construction site management. Commercially available smartphones with a video transmission app can be used for this purpose. Another app allows site management or security personnel to select and forward individual or multiple video streams.
The 5G network is enabled by the modular 5G Nomadic Node from Fraunhofer FOKUS, the implementation of a blueprint for temporary networks consisting of building blocks from the CampusOS technology catalog. The hardware and software of the 5G Nomadic Node is integrated in a robust, transportable server case. The software-based core network Open5GCore ensures a flexible network tailored to the application - even with a satellite connection if required. The 5G Nomadic Node supports radio systems from several providers, including the Open RAN radio systems from CampusOS project partners Fraunhofer HHI and Node-H. TU Berlin is researching Open RAN-based optimization methods. Project partner Topcon Deutschland Positioning integrates the GNSS sensors and the connection to the construction machinery. The video transmission apps come from the company Smart Mobile Labs.
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