About Me

I've started working at the Distributed Systems Group as a research assistant in 2017, and have been employed as a PhD student since spring of 2020. My research focuses primarily on ad-hoc wireless networks with a particular emphasis on resilient disaster communications.

I am also a member of the emergenCITY project, where I work under Professor Freisleben in the Communications Group (KOM).

As programming languages are concerned, I work mostly in Python and Go.

Selected Publication

Dynamic Role Assignment in Software-Defined Wireless Networks

Software-defined networking paradigms have found their way into wireless edge networks, allowing network slicing, mobility management, and resource allocation. This paper presents dynamic role assignment as a novel approach tosoftwaredefined network topology management for wireless edgedevices, such as laptops, tablets and smartphones. It combines the centralized control of wireless Network Interface Controller (NIC) modes with Network Function Virtualization (NFV) to integrate network topology transitions as well as network serviceand application service placement within a single mechanism.

• Pablo Graubner, Markus Sommer, Matthias Hollick, Bernd Freisleben (2017). Dynamic Role Assignment in Software-Defined Wireless Networks. In the 2017 IEEE Symposium on Computers and Communications (ISCC), pp. 760-766.
• IEEE

ProgDTN: Programmable Disruption-Tolerant Networking

Existing routing algorithms for disruption-tolerant networking (DTN) have two main limitations: (a) a particular DTN routing algorithm is typically designed to achieve very good performance in a specific scenario, but has limited performance in other scenarios, and (b) DTN routing algorithms do not take advantage of network programmability to profit from its benefits. We present ProgDTN, a novel approach to support programmable disruption-tolerant networking by allowing network operators to implement and adapt routing algorithms without knowledge of a router’s interior workings using the popular JavaScript language.

• Sommer, M., Höchst, J., Sterz, A., Penning, A., Freisleben, B. (2022). ProgDTN: Programmable Disruption-Tolerant Networking. In Networked Systems NETYS 2022. Lecture Notes in Computer Science, vol 13464. Springer
• Springer

Unobtrusive mechanism interception

Networked systems and applications are often based on proprietary hardware/software components that manufacturers might not be willing to adapt or update if new requirements arise. We present mechanism interception, a novel approach to unobtrusively add or modify functionality to/of an existing networked system or application without touching any proprietary components. Behavioral changes are achieved by functionality-enhancing yet unobtrusive interceptors, i.e., components introduced between systems and their environments adding or updating mechanisms.

• P. Lampe, M. Sommer, A. Sterz, J. Höchst, C. Uhl and B. Freisleben (2022). Unobtrusive Mechanism Interception. IEEE 47th Conference on Local Computer Networks (LCN), 2022, pp. 303-306
• IEEE

Find Me On

• Google Scholar
• DBLP
• GitHub
• IEEE