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Florian Kauer

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Florian Kauer
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Florian Kauer, né Meier

In October 2013 I received my Master's degree in Computer Engineering at Hamburg University of Technology. Since November 2013 I am working as a research assistant at the Institute of Telematics.

Projects

Publications

Florian Kauer and Volker Turau. Constructing Customized Multi-Hop Topologies in Dense Wireless Network Testbeds. In Ad-hoc, Mobile, and Wireless Networks, September 2018, pp. 319–331. Saint Malo, France.
@InProceedings{Telematik_adhocnow_2018, author = {Florian Kauer and Volker Turau}, title = {Constructing Customized Multi-Hop Topologies in Dense Wireless Network Testbeds}, booktitle = {Ad-hoc, Mobile, and Wireless Networks}, pages = {319-331}, day = {5-7}, month = sep, year = 2018, location = {Saint Malo, France}, }
Abstract: Testbeds are a key element in the evaluation of wireless multi-hop networks. In order to relieve researchers from the hassle of deploying their own testbeds, remotely controllable testbeds, such as the FIT/IoT-LAB, are built. However, while the IoT-LAB has a high number of nodes deployed in constraint areas. This, together with the complex nature of radio propagation, makes an ad-hoc construction of multi-hop topologies with higher number of hops difficult. This work presents a strategic approach to solve this problem and proposes algorithms to generate topologies with desired properties. The implementation is provided as open-source software. The algorithms are evaluated for the IoT-LAB testbeds. The results show that preset topologies of various types can be built even in dense wireless testbeds.
Florian Kauer, Maximilian Köstler and Volker Turau. Reliable Wireless Multi-Hop Networks with Decentralized Slot Management: An Analysis of IEEE 802.15.4 DSME. Technical Report arXiv:1806.10521, CoRR, Cornell University, August 2018.
@TechReport{Telematik2018, author = {Florian Kauer and Maximilian Köstler and Volker Turau}, title = {Reliable Wireless Multi-Hop Networks with Decentralized Slot Management: An Analysis of IEEE 802.15.4 DSME}, number = {arXiv:1806.10521}, institution = {CoRR}, address = {Cornell University}, month = aug, year = 2018, }
Abstract: Wireless communication is a key element in the realization of the Industrial Internet of Things for flexible and cost-efficient monitoring and control of industrial processes. Wireless mesh networks using IEEE 802.15.4 have a high potential for executing monitoring and control tasks with low energy consumption and low costs for deployment and maintenance. However, conventional medium access techniques based on carrier sensing cannot provide the required reliability for industrial applications. Therefore, the standard was extended with techniques for time-slotted medium access on multiple channels. In this paper, we present openDSME, a comprehensive implementation of the Deterministic and Synchronous Multi-channel Extension (DSME) and propose a method for traffic-aware and decentralized slot scheduling to enable scalable wireless industrial networks. The performance of DSME and our implementation is demonstrated in the OMNeT++ simulator and on a physically deployed wireless network in the FIT/IoT-LAB. It is shown that in the given scenarios, twice as much traffic can be delivered reliably by using DSME instead of CSMA/CA and that the energy consumption can be reduced significantly. The paper is completed by presenting important trade-offs for parameter selection and by uncovering open issues of the current specification that call for further effort in research and standardization.
Florian Kauer and Volker Turau. An Analytical Model for Wireless Mesh Networks with Collision-Free TDMA and Finite Queues. Technical Report arXiv:1806.05026, CoRR, Cornell University, August 2018.
@TechReport{Telematik_2018, author = {Florian Kauer and Volker Turau}, title = {An Analytical Model for Wireless Mesh Networks with Collision-Free TDMA and Finite Queues}, number = {arXiv:1806.05026}, institution = {CoRR}, address = {Cornell University}, month = aug, year = 2018, }
Abstract: Wireless mesh networks are a promising technology for connecting sensors and actuators with high flexibility and low investment costs. In industrial applications, however, reliability is essential. Therefore, two time-slotted medium access methods, DSME and TSCH, were added to the IEEE 802.15.4 standard. They allow collision-free communication in multi-hop networks and provide channel hopping for mitigating external interferences. The slot schedule used in these networks is of high importance for the network performance. This paper supports the development of efficient schedules by providing an analytical model for the assessment of such schedules, focused on TSCH. A Markov chain model for the finite queue on every node is introduced that takes the slot distribution into account. The models of all nodes are interconnected to calculate network metrics such as packet delivery ratio, end-to-end delay and throughput. An evaluation compares the model with a simulation of the Orchestra schedule. The model is applied to Orchestra as well as to two simple distributed scheduling algorithms to demonstrate the importance of traffic-awareness for achieving high throughput.

The complete list of publications is available separately.

Supervised Theses

Completed Theses