PhD Researcher
Marian Ulbricht is currently an external PhD student at “Deutsche Telekom Chair of Communication Networks” at TU Dresden. He is working in the TSN research group. The focus is hardware accelerated delay optimization.
He studied at the Hochschule für Telekommunikation Leipzig (HfTL) for Bachelor and Master in communication technology. The focus of the studies was on embedded systems and microcontroller programming. Since 2015, he has been with the InnoRoute GmbH in Munich as software developer and project engineer with focus on TSN and network node design. Since 2023 he is working as laboratory engineer with teaching duties at HTWK-Leipzig.
Email: marian.ulbricht@mailbox.tu-dresden.de
Please find open topics here: Open Topics.
Senk, Stefan; Ulbricht, Marian; Nazari, Hosein K.; Doan, Tung V.; Nguyen, Giang T.; Fitzek, Frank H. P.
Bring Functions Back to the Network: A Measurement Study Proceedings Article
In: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN), Natal, Brazil, 2024.
Abstract | BibTeX
@inproceedings{Senk2024:BringBack, title = {Bring Functions Back to the Network: A Measurement Study}, author = {Stefan {Senk} and Marian {Ulbricht} and Hosein {K. Nazari} and Tung V. {Doan} and Giang T. {Nguyen} and Frank H. P. {Fitzek}}, year = {2024}, date = {2024-11-05}, urldate = {2024-11-01}, booktitle = {IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN)}, address = {Natal, Brazil}, abstract = {Network Function Virtualization (NFV) is envisioned to provide the foundation for a dynamic, high-performance multi-layer network architecture. With NFV, running network functions on general-purpose hardware is supposed to lower network latency due to reduced propagation delay. The trade-off, however, is in impaired reliability and increased processing latency, which could negatively affect Quality of Service (QoS) and Quality of Experience (QoE). We investigate the trade-off via a comprehensive measurement study exploiting a high-precision measurement method on a carrier-grade Cisco Catalyst 9500 Series switch, which provides enhanced computing capability via lightweight containerization. Baseline results on packet forwarding latency confirm that software-based forwarding is inferior to the hardware pendant. Subsequently, we deploy a more realistic application with an example for network coding and introduce a new metric, re-coding opportunities. Our study identifies a superior performance of generic hardware, but also shows advantages of in-network computing for latency-tolerable scenarios.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
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Ulbricht, Marian; Senk, Stefan; Nazari, Hosein K.; Liu, How-Hang; Reisslein, Martin; Nguyen, Giang T.; Fitzek, Frank H. P.
TSN-FlexTest Traffic Streams for Spot Robot, Tactile Internet, and Generic Data Medium
IEEE Dataport, 2024, visited: 13.08.2024.
Links | BibTeX
@media{4eyw-n176-23, title = {TSN-FlexTest Traffic Streams for Spot Robot, Tactile Internet, and Generic Data}, author = {Marian {Ulbricht} and Stefan {Senk} and Hosein {K. Nazari} and How-Hang {Liu} and Martin {Reisslein} and Giang T. {Nguyen} and Frank H. P. {Fitzek}}, url = {https://dx.doi.org/10.21227/4eyw-n176}, doi = {10.21227/4eyw-n176}, year = {2024}, date = {2024-08-13}, urldate = {2024-08-13}, publisher = {IEEE Dataport}, keywords = {}, pubstate = {published}, tppubtype = {media} }
Liu, How-Hang; Senk, Stefan; Ulbricht, Marian; Nazari, Hosein K.; Scheinert, Tobias; Reisslein, Martin; Nguyen, Giang T.; Fitzek, Frank H. P.
Improving TSN Simulation Accuracy in OMNeT++: A Hardware-Aligned Approach Journal Article
In: IEEE Access, vol. 12, pp. 79937-79956, 2024.
@article{Liu24:OMNeT++TSN, title = {Improving TSN Simulation Accuracy in OMNeT++: A Hardware-Aligned Approach}, author = {How-Hang {Liu} and Stefan {Senk} and Marian {Ulbricht} and Hosein {K. Nazari} and Tobias {Scheinert} and Martin {Reisslein} and Giang T. {Nguyen} and Frank H. P. {Fitzek}}, doi = {10.1109/ACCESS.2024.3410109}, year = {2024}, date = {2024-06-05}, urldate = {2024-06-05}, journal = {IEEE Access}, volume = {12}, pages = {79937-79956}, publisher = {IEEE}, keywords = {}, pubstate = {published}, tppubtype = {article} }
TSN-FlexTest: Flexible TSN Measurement Testbed Journal Article
In: IEEE Transactions on Network and Service Management, vol. 21, iss. 2, pp. 1387-1402, 2023.
@article{Ulbricht24:FlexTest, title = {TSN-FlexTest: Flexible TSN Measurement Testbed}, author = {Marian {Ulbricht} and Stefan {Senk} and Hosein {K. Nazari} and How-Hang {Liu} and Martin {Reisslein} and Giang T. {Nguyen} and Frank H. P. {Fitzek}}, doi = {10.1109/TNSM.2023.3327108}, year = {2023}, date = {2023-10-24}, urldate = {2023-10-24}, journal = {IEEE Transactions on Network and Service Management}, volume = {21}, issue = {2}, pages = {1387-1402}, keywords = {}, pubstate = {published}, tppubtype = {article} }
Nande, Swaraj Shekhar; Paul, Marius; Senk, Stefan; Ulbricht, Marian; Bassoli, Riccardo; Fitzek, Frank H. P.; Boche, Holger
Quantum Enhanced Time Synchronisation for Communication Network Journal Article
In: Computer Networks, 2023.
@article{nande_CN_2023, title = {Quantum Enhanced Time Synchronisation for Communication Network}, author = {Swaraj Shekhar {Nande} and Marius {Paul} and Stefan {Senk} and Marian {Ulbricht} and Riccardo {Bassoli} and Frank H. P. {Fitzek} and Holger {Boche}}, doi = {10.1016/j.comnet.2023.109772}, year = {2023}, date = {2023-01-01}, urldate = {2023-01-01}, journal = {Computer Networks}, keywords = {}, pubstate = {published}, tppubtype = {article} }
Senk, Stefan; Ulbricht, Marian; Acevedo, Javier; Nguyen, Giang T.; Seeling, Patrick; Fitzek, Frank H. P.
Flexible Measurement Testbed for Evaluating Time-Sensitive Networking in Industrial Automation Applications Proceedings Article
In: 2022 IEEE 8th International Conference on Network Softwarization (NetSoft) (NetSoft 2022), Milan, Italy, 2022.
Abstract | Links | BibTeX
@inproceedings{Senk2206:Flexible, title = {Flexible Measurement Testbed for Evaluating Time-Sensitive Networking in Industrial Automation Applications}, author = {Stefan {Senk} and Marian {Ulbricht} and Javier {Acevedo} and Giang T. {Nguyen} and Patrick {Seeling} and Frank H. P. {Fitzek}}, doi = {10.1109/NetSoft54395.2022.9844050}, year = {2022}, date = {2022-06-26}, urldate = {2022-06-26}, booktitle = {2022 IEEE 8th International Conference on Network Softwarization (NetSoft) (NetSoft 2022)}, address = {Milan, Italy}, abstract = {Deterministic communications are required for industrial environments, yet their realization is a challenging task. Time-Sensitive Networking (TSN) is intended to enable deterministic communication over inexpensive Ethernet networks. Standardized by the IEEE TSN working group, TSN enables precise control of time synchronization, traffic shaping, reliability enhancements, and network administration to answer the demands of industrial control applications. Subsequently, there is a significant need to enable turnkey research and implementation efforts. However, a current lack of open-sourced testbed implementations to investigate and study the behavior of TSN network devices limits verification to simulation and theoretical models. We introduce a publicly available, flexible, and open-sourced measurement testbed for evaluating TSN in the context of industrial automation applications to address the need to perform real-world measurements. In this contribution, we describe our testbed combining Commercial-Off-The-Shelf (COTS) hardware and existing open-source tools as a platform for in-depth evaluation of TSN devices. Providing detailed TSN backgrounds, we describe an in-depth performance analysis for our implementation. For a common Tactile Internet scenario, we observe an accuracy of close to 5 ns achievable with our publicly available COTS setup.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
Senk, Stefan; Ulbricht, Marian; Tsokalo, Ievgenii A.; Rischke, Justus; Li, Shu-Chen; Speidel, Stefanie; Nguyen, Giang T.; Seeling, Patrick; Fitzek, Frank H. P.
Healing Hands: The Tactile Internet in Future Tele-Healthcare Journal Article
In: Sensors, vol. 22, no. 4, 2022, ISSN: 1424-8220.
@article{s22041404, title = {Healing Hands: The Tactile Internet in Future Tele-Healthcare}, author = {Stefan {Senk} and Marian {Ulbricht} and Ievgenii A. {Tsokalo} and Justus {Rischke} and Shu-Chen {Li} and Stefanie {Speidel} and Giang T. {Nguyen} and Patrick {Seeling} and Frank H. P. {Fitzek}}, url = {https://www.mdpi.com/1424-8220/22/4/1404}, doi = {10.3390/s22041404}, issn = {1424-8220}, year = {2022}, date = {2022-01-01}, urldate = {2022-01-01}, journal = {Sensors}, volume = {22}, number = {4}, abstract = {In the early 2020s, the coronavirus pandemic brought the notion of remotely connected care to the general population across the globe. Oftentimes, the timely provisioning of access to and the implementation of affordable care are drivers behind tele-healthcare initiatives. Tele-healthcare has already garnered significant momentum in research and implementations in the years preceding the worldwide challenge of 2020, supported by the emerging capabilities of communication networks. The Tactile Internet (TI) with human-in-the-loop is one of those developments, leading to the democratization of skills and expertise that will significantly impact the long-term developments of the provisioning of care. However, significant challenges remain that require today\’s communication networks to adapt to support the ultra-low latency required. The resulting latency challenge necessitates trans-disciplinary research efforts combining psychophysiological as well as technological solutions to achieve one millisecond and below round-trip times. The objective of this paper is to provide an overview of the benefits enabled by solving this network latency reduction challenge by employing state-of-the-art Time-Sensitive Networking (TSN) devices in a testbed, realizing the service differentiation required for the multi-modal human-machine interface. With completely new types of services and use cases resulting from the TI, we describe the potential impacts on remote surgery and remote rehabilitation as examples, with a focus on the future of tele-healthcare in rural settings.}, keywords = {}, pubstate = {published}, tppubtype = {article} }
TSN-FlexTest: Flexible TSN Measurement Testbed (Extended Version) Journal Article
In: 2022, (arXiv pre-print).
@article{Ulbricht22:FlexTest, title = {TSN-FlexTest: Flexible TSN Measurement Testbed (Extended Version)}, author = {Marian {Ulbricht} and Stefan {Senk} and Hosein {K. Nazari} and How-Hang {Liu} and Martin {Reisslein} and Giang T. {Nguyen} and Frank H. P. {Fitzek}}, url = {https://arxiv.org/abs/2211.10413}, doi = {10.48550/ARXIV.2211.10413}, year = {2022}, date = {2022-01-01}, urldate = {2022-01-01}, publisher = {arXiv}, note = {arXiv pre-print}, keywords = {}, pubstate = {published}, tppubtype = {article} }
Ulbricht, Marian; Acevedo, Javier; Krdoyan, Surik; Fitzek, Frank H. P.
Emulation vs. Reality: Hardware and Software Co-Design in Emulated and Implemented Time-Sensitive Networks Proceedings Article
In: European Wireless 2021, Verona, Italy, 2021.
BibTeX
@inproceedings{Ulbricht21:hwswTSN, title = {Emulation vs. Reality: Hardware and Software Co-Design in Emulated and Implemented Time-Sensitive Networks}, author = {Marian {Ulbricht} and Javier {Acevedo} and Surik {Krdoyan} and Frank H. P. {Fitzek}}, year = {2021}, date = {2021-11-10}, booktitle = {European Wireless 2021}, address = {Verona, Italy}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
Precise Fruits: Hardware Supported Time-Synchronisation on the RaspberryPI Proceedings Article
In: 2021 International Conference on Smart Applications, Communications and Networking (SmartNets): Industry 40 and Connected Factory, 2021.
@inproceedings{Ulbricht21:PreciseFruits, title = {Precise Fruits: Hardware Supported Time-Synchronisation on the RaspberryPI}, author = {Marian {Ulbricht} and Javier {Acevedo} and Surik {Krdoyan} and Frank H. P. {Fitzek} }, year = {2021}, date = {2021-09-22}, booktitle = {2021 International Conference on Smart Applications, Communications and Networking (SmartNets): Industry 40 and Connected Factory}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }