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Florian Meyer

Picture of Florian Meyer
Florian Meyer
Room 4.087, building E
Am Schwarzenberg-Campus 3
21073 Hamburg
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Projects

Publications

Ivonne Mantilla González, Meyer Florian and Volker Turau. A Comprehensive Performance Comparison of IEEE 802.15.4 DSME and TSCH in a Realistic IoT Scenario for Industrial Applications. ACM Transactions on Internet of Things, 1–30, June 2023.
[BibTeX] [Abstract] [DOI]
@Article{ACM Transactions on Internet of Things_2023, author = {Ivonne Mantilla González and Meyer Florian and Volker Turau}, title = {A Comprehensive Performance Comparison of IEEE 802.15.4 DSME and TSCH in a Realistic IoT Scenario for Industrial Applications}, pages = {1-30}, journal = {ACM Transactions on Internet of Things}, publisher = {Association for Computing Machinery}, month = jun, year = 2023, }
Abstract: In the Industrial Internet of Things (i.e., IIoT), the standardization of open technologies and protocols has achieved seamless data exchange between machines and other physical systems from different manufacturers. At the MAC sublayer, the industry-standard protocols IEEE 802.15.4 Time Slot Channel Hopping (TSCH) and Deterministic and Synchronous Multi-channel Extension (DSME) show promising properties for high adaptability and dynamically changing traffic. However, performance comparison between these MAC protocols rarely has gone beyond a simulation phase. This work presents the results of such a comparison on physically deployed networks using the facilities of the FIT-IoTLab. The evaluation includes fully implementing an IIoT protocol stack based on MQTT in Contiki-NG. It comprises the integration of DSME as part of Contiki-NG’s software stack through OpenDSME, the only publicly available implementation of DSME. Results show that both protocols suit IIoT applications, particularly for data collection. The comparison between TSCH and DSME also includes an evaluation of distributed schedulers for both MAC modes and one autonomous scheduler for TSCH within a UDP protocol stack.
Florian Meyer, Phil Malessa, Jan Diercks and Volker Turau. Are Group Acknowledgements Worth Anything in IEEE 802.15.4 DSME: A Comparative Analysis. In In Proceedings of 5th International Conference on Cloud and Internet of Things, CIoT '22, IEEE, March 2022, pp. 114–121. Marrakesh, Morocco.
[BibTeX] [Abstract] [DOI] [Slides]
@InProceedings{Telematik_CIoT_2021, author = {Florian Meyer and Phil Malessa and Jan Diercks and Volker Turau}, title = {Are Group Acknowledgements Worth Anything in IEEE 802.15.4 DSME: A Comparative Analysis}, booktitle = {In Proceedings of 5th International Conference on Cloud and Internet of Things, CIoT '22}, pages = {114-121}, publisher = {IEEE}, day = {28-30}, month = mar, year = 2022, location = {Marrakesh, Morocco}, }
Abstract: For data collection scenarios in the industrial Internet of Things, wireless communication offers a cost-effective and easy-to-deploy alternative to wired networks. Especially when data needs to be forwarded via multiple battery-powered nodes to a gateway for analysis in the cloud, high energy efficiency and reliability are required. IEEE 802.15.4 DSME acknowledges every packet individually (ACK), imposing an overhead for each transmitted packet and increasing energy consumption. In networks with little interference, it may thus be beneficial to aggregate ACKs for multiple nodes and broadcast them in a compressed format. This paper compares different of these group acknowledgment (GACK) schemes in best-case and worst-case scenarios and proposes novel GACK schemes to examine whether GACKs constitute a viable alternative to regular ACKs. Results indicate that GACKs can provide a 17% higher reliability than regular ACKs in a best-case scenario. On the other hand, they reduced reliability by at least 15% in comparison to regular ACKs in all other scenarios. Experiments on hardware do not indicate lower energy consumption.
Florian Meyer and Volker Turau. QMA: A Resource-efficient, Q-learning-based Multiple Access Scheme for the IIoT. In 2021 IEEE 41st International Conference on Distributed Computing Systems (ICDCS), IEEE, October 2021, pp. 864–874. Washington DC, USA / Virtually.
[BibTeX] [Abstract] [DOI] [URL]
@InProceedings{Telematik_icdcs_2021, author = {Florian Meyer and Volker Turau}, title = {QMA: A Resource-efficient, Q-learning-based Multiple Access Scheme for the IIoT}, booktitle = {2021 IEEE 41st International Conference on Distributed Computing Systems (ICDCS)}, pages = {864-874}, publisher = {IEEE}, day = {7-10}, month = oct, year = 2021, location = {Washington DC, USA / Virtually}, }
Abstract: Many MAC protocols for the Industrial Internet of Things, such as IEEE 802.15.4 and its extensions, require contention-based channel access for management traffic, e.g., for slot (de)allocations and broadcasts. In many cases, subtle but hidden patterns characterize this secondary traffic, but present contention-based protocols are unaware of these patterns and therefore cannot exploit them. Especially in dense networks, these protocols often do not provide sufficient throughput and reliability for primary traffic, i.e., they cannot allocate transmission slots in time. In this paper, we propose QMA, a contention-based multiple access scheme based on Q-learning. It dynamically adjusts transmission times to avoid collisions by learning patterns in contention-based traffic. We show that QMA solves the hidden node problem without the overhead for RTS/CTS messages and, for example, increases throughput from 10 packets/s to 50 packets/s in a hidden three-node scenario without sacrificing reliability. Additionally, QMA's scalability is evaluated in a realistic scenario for slot (de)allocation in IEEE 802.15.4 DSME, where it achieves up to twice more slot (de)allocations per second.

The complete list of publications is available separately.

Supervised Theses

Completed Theses