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Matthias Witt

Foto von Matthias Witt
Dr. rer. nat. Matthias Witt
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Publikationen

Matthias Witt und Volker Turau. Robust and Low-Communication Geographic Routing for Wireless Ad Hoc Networks. Wireless Communications and Mobile Computing, 10(4):486–510, 2010.
@Article{Telematik_TW_2009_GeographicRouting, author = {Matthias Witt and Volker Turau}, title = {Robust and Low-Communication Geographic Routing for Wireless Ad Hoc Networks}, pages = {486-510}, journal = {Wireless Communications and Mobile Computing}, volume = {10}, number = {4}, year = 2010, }
Abstract: A novel beacon-less algorithm called Blind Geographic Routing (BGR) is presented, which comes with an effective and robust recovery strategy to circumvent voids, and a new technique to avoid simultaneous forwarding by more than one node, features not included in other beacon-less algorithms. BGR is the first beacon-less algorithm that also works in 3D topologies. Additionally, BGR supports different delivery semantics, which specify how close a node must be to the destination location in order to receive the message, and how many nodes shall receive it. These semantics allow for routing not only to designated nodes with network-wide known locations such as sinks, but to arbitrary destinations within the network area. It is shown through extensive simulation that BGR performs well even in the case of mobility, radio irregularity, and location errors, while GPSR as a beacon-based algorithm suffers from severe problems in realistic scenarios that do not follow the unit disk graph model, even with recent enhancements of the original GPSR algorithm.
Matthias Witt. Robust and Low-Communication Geographic Routing for Wireless Ad Hoc Networks. PhD Thesis, Hamburg University of Technology, Hamburg, Germany, 2008.
@PhdThesis{Telematik_Witt_2008_Diss, author = {Matthias Witt}, title = {Robust and Low-Communication Geographic Routing for Wireless Ad Hoc Networks}, publisher = {Cuvillier Verlag, G{\"o}ttingen, Germany}, school = {Hamburg University of Technology}, address = {Hamburg, Germany}, edition = {1st}, year = 2008, isbn = {978-3-86727-733-4}, }
Matthias Witt und Volker Turau. Geographic Routing in 3D. In Proceedings of the 6th GI/ITG KuVS Fachgespräch "Drahtlose Sensornetze" (FGSN'07), Juli 2007, pp. 75–78. Aachen, Germany.
@InProceedings{Telematik_WT_2007_3DRouting, author = {Matthias Witt and Volker Turau}, title = {Geographic Routing in 3D}, booktitle = {Proceedings of the 6th GI/ITG KuVS Fachgespr{\"a}ch "Drahtlose Sensornetze" (FGSN'07)}, pages = {75-78}, day = {16-17}, month = jul, year = 2007, location = {Aachen, Germany}, }
Abstract: Existing geographic routing algorithms assume a two-dimensional topology. Dedicated wireless sensor network scenarios demand for algorithms that operate in three-dimensional environments. This paper discusses issues which arise when making the step from 2D to 3D. Simulation studies show that 3D routing is less efficient than its 2D counterpart when comparing topologies with the same average node degree.

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