PhD Researcher
Andreas Ingo Grohmann works in the field of Open Radio Access Network (ORAN) integration at the Deutsche Telekom Chair of Communication Networks at TU Dresden. He embarked on his doctoral studies in 2019, following the completion of his Dipl.-Ing. degree in electrical engineering from the same institution. His journey at the ComNets chair began in 2015 as a student assistant, where he delved into the intricacies of routing in wireless mesh networks and orchestration within multi-access edge computing (MEC) environments. Mr. Grohmann’s research now centers on harnessing the power of 5G non-public networks (NPNs) to orchestrate cyber-physical systems within the Industry 4.0 landscape. He envisions a future where private 5G networks unlock unprecedented levels of productivity and efficiency across businesses of all sizes. To achieve this vision in a cost-effective manner, he emphasizes the need for 5G solutions that seamlessly adapt to the unique demands of each enterprise. He identifies ORAN as a compelling solution due to its inherent flexibility, and his research currently focuses on tailoring ORAN systems to address specific use cases. His research delves deep into the customization of ORAN systems for specific use cases, a skill further honed by his participation in international conferences and a research exchange hosted by Prof. Ray-Guang Cheng, at the ORAN Software Community (OSC) Lab Taipei at National Taiwan University of Science and Technology (NTUST).
Phone: +49 351 463-33474 Email: andreas_ingo.grohmann@tu-dresden.de Room: BAR I/23
Student Thesis
Diploma Thesis
Master Thesis
Grohmann, Andreas I.; Kropp, Alexander; Lehmann, Christopher; Tsokalo, Ievgenii A.; Fitzek, Frank H. P.
Catch Me If You Can: Demonstration of Publicly Remote Controlled Robots Proceedings Article
In: 2021 IEEE 18th Annual Consumer Communications & Networking Conference (CCNC) (CCNC 2021), Las Vegas, USA, 2021.
Abstract | BibTeX
@inproceedings{Grohmann2021, title = {Catch Me If You Can: Demonstration of Publicly Remote Controlled Robots}, author = {Andreas I. {Grohmann} and Alexander {Kropp} and Christopher {Lehmann} and Ievgenii A. {Tsokalo} and Frank H. P. {Fitzek}}, year = {2021}, date = {2021-01-09}, booktitle = {2021 IEEE 18th Annual Consumer Communications \& Networking Conference (CCNC) (CCNC 2021)}, address = {Las Vegas, USA}, abstract = {This demonstrator enables remote audiences to control robots within our lab. The purpose is to play a little game in order to show remote control over the public internet. Users are able to interact with the demo remotely through the web interface. This demonstrates an straight forward approach for remote robot operation independent from a specific device. Any current web browser running on a commercial off-the-shelf computer or mobile phone can be used to interact with the demo. However, it also shows the limitations of this kind of robot control. Dependent on the user's location and network connection, different amounts of latency come into play. Within this demo this effects the difficulty, as only fast or precise movements are possible.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
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Grohmann, Andreas I.; Nophut, David; Sobe, Marek; Bretschneider, Adrian; Fitzek, Frank H. P.
Interference resilience of Thread: A practical performance evaluation Proceedings Article
@inproceedings{Groh2101:Interference, title = {Interference resilience of Thread: A practical performance evaluation}, author = {Andreas I. {Grohmann} and David {Nophut} and Marek {Sobe} and Adrian {Bretschneider} and Frank H. P. {Fitzek}}, year = {2021}, date = {2021-01-09}, booktitle = {2021 IEEE 18th Annual Consumer Communications \& Networking Conference (CCNC) (CCNC 2021)}, address = {Las Vegas, USA}, abstract = {Currently, most IoT services are hosted centralized in a cloud. However, they rely on data gathered by numerous distributed sensors, which require to be connected to these clouds. At the moment this is realized with non-IP based proprietary wireless sensor networks that use inflexible networking concepts and require to be carefully configured. The Thread protocol, with its implementation OpenThread, is a new wireless mesh approach to solve this problem. OpenThread is maintained by the Thread group, which is an organization supported by almost 300 companies, including Google, Amazon, and Apple. Its design is based on an IPv6, for seamless integration in existing IP networks. This work, after a short a practical overview of the Thread protocol in general, investigates the network performance in different interference scenarios based on results from a hardware testbed, set up in an office building. This testbed is based on the Nordic Semiconductor nRF52840 System on a Chip (SoC), running OpenThread from the official github repository. Besides a thorough examination for round-trip-time (RTT) and losses, a stability test was performed over five weeks, to see the impact of interference during business hours. We measured RTTs in the range of 10 to 100 ms and losses up to 40% depending on interfering wireless services. Despite its obvious advantages, from our experimental results, it is evident how some practical limitations make OpenThread not always a good choice.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
Grohmann, Andreas I.; Gabriel, Frank; Zimmermann, Sandra; Fitzek, Frank H. P.
SourceShift: Resilient Routing in Highly Dynamic Wireless Mesh Networks Proceedings Article
In: 2020 IEEE Wireless Communications and Networking Conference (WCNC) (IEEE WCNC 2020), Seoul, Korea (South), 2020.
BibTeX
@inproceedings{Grohmann2020, title = {SourceShift: Resilient Routing in Highly Dynamic Wireless Mesh Networks}, author = {Andreas I. {Grohmann} and Frank {Gabriel} and Sandra {Zimmermann} and Frank H. P. {Fitzek}}, year = {2020}, date = {2020-04-05}, booktitle = {2020 IEEE Wireless Communications and Networking Conference (WCNC) (IEEE WCNC 2020)}, address = {Seoul, Korea (South)}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }