Publications

@misc{Zimmerling2010,

title = {Poster Abstract: Exploiting Protocol Models for Generating Feasible Communication Stack Configurations},

author = {Marco Zimmerling and Federico Ferrari and Matthias Wöhrle and Lothar Thiele},

doi = {https://doi.org/10.1145/1791212.1791264},

isbn = {978-1-60558-988-6},

year  = {2010},

date = {2010-04-12},

urldate = {2010-04-12},

abstract = {Communication stacks are composed of distinct layers that, in principle, operate independently and interact through well-defined interfaces. However, resource constraints in sensor networks typically necessitate optimizations, leading to implicit assumptions and dependencies among layers (e.g., a collection protocol assumes the MAC protocol provides sufficient bandwidth). These dependencies are often tracked manually, yet become extremely complex as protocols evolve and requirements change. We propose to model assumptions and dependencies explicitly, as constraints on protocol parameters. This allows for using standard tools to generate feasible protocol configurations. We demonstrate the effectiveness of our approach using the example of FTSP running on top of a low-power listening MAC protocol.},

howpublished = {Proceedings of the 9th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN)},

keywords = {},

pubstate = {published},

tppubtype = {presentation}

}

@techreport{Ferrari2010,

title = {Accuracy and Duty-Cycle of FTSP on a LPL-MAC},

author = {Federico Ferrari and Marco Zimmerling and Lothar Thiele},

year  = {2010},

date = {2010-02-16},

abstract = {Synchronization accuracy and energy efficiency are two of the most important requirements of a synchronization protocol for wireless sensor networks (WSNs). Typically, synchronization protocols for WSNs like FTSP rely on periodic message exchange in order to achieve a sufficient level of accuracy. A higher accuracy therefore comes at the expense of an increased energy consumption. In this paper, we introduce an analytic framework aimed at analyzing how accuracy and energy consumption are affected by the synchronization period and the radio duty cycle, using the example of FTSP running on top of a low-power listening (LPL) MAC protocol. The model exposes the hidden dependencies between protocol parameters and application requirements, which allows for using standard tools to generate feasible as well as optimal protocol configurations.},

howpublished = {TIK Report 319},

keywords = {},

pubstate = {published},

tppubtype = {techreport}

}

@diplomathesis{Zimmerling2009b,

title = {Automatic Parameter Optimization of Sensor Network MAC Protocols},

author = {Marco Zimmerling},

year  = {2009},

date = {2009-08-01},

abstract = {Wireless sensor networks are concerned with resource and performance constraints. In the light of these constraints, sensor network protocols must operate efficiently and effectively at all times. This applies in particular to the medium access control (MAC) protocol, which dictates to a large extent the energy consumption of a sensor node by controlling the use of the radio transceiver. Moreover, it determines the timing of communication among neighboring nodes and thus per-hop latency and per-hop reliability. To achieve the best possible performance, the MAC protocol must be configured

with appropriate parameters and automatically adapted to changes in network conditions and application requirements.

This thesis presents a novel system for automatic optimization and adaptation of sensor network MAC protocols. It adapts the protocol parameters at runtime to ensure optimal performance and compliance with the application requirements. The optimization approach is based on constraint programming and optimizes multiple objectives simultaneously. The approach is applied in a case study to X-MAC [9], a flexible and widely used MAC protocol for sensor networks. Experimental results obtained from a small-scale network of real sensor nodes show that the proposed

system keeps MAC protocol performance close to the optimum under varying network conditions and different application requirements.},

keywords = {},

pubstate = {published},

tppubtype = {diplomathesis}

}

@inbook{Zimmerling2009,

title = {Energieeffizientes Routing in linearen Sensornetzwerken},

author = {Marco Zimmerling},

doi = {https://doi.org/10.1007/s00287-008-0266-9},

year  = {2008},

date = {2008-08-09},

urldate = {2008-08-09},

booktitle = {Informatik-Spektrum},

volume = {32},

number = {5},

pages = {410-415},

publisher = {Springer},

abstract = {Der effektive Einsatz von Sensornetzwerken setzt eine besonders hohe Lebensdauer der batteriebetriebenen Sensormodule voraus. In der Vergangenheit wurden deshalb zahlreiche energieeffiziente Routingprotokolle für Sensornetze entwickelt. Die überwiegende Mehrheit dieser Protokolle geht dabei von einer maschenartigen Netzwerktopologie aus. Für bestimmte Anwendungen hingegen, wie beispielsweise der sensorbasierten Betriebsüberwachung von Ölpipelines, ist eine lineare Anordnung der Sensormodule inhärent. Aus diesem Grund stellt der vorliegenden Artikel das ,,Minimum Energy Relay Routing“ (MERR)-Protokoll vor, ein speziell für lineare Sensornetzwerke entwickeltes Routingprotokoll. Es werden konventionelle Routingstrategien besprochen und der Aufbau von Routingpfaden charakterisiert, entlang derer die aufzuwendende Energie minimal ist. Die Ergebnisse von stochastischen Untersuchungen und Simulation zeigen, dass MERR für praktisch relevante Sensoranordnungen nahe am Optimum arbeitet und im Vergleich zu existierenden Ansätzen erhebliche Energieeinsparungen erzielt. },

keywords = {},

pubstate = {published},

tppubtype = {inbook}

}

@conference{Zimmerling2008b,

title = {Localized Power-Aware Routing in Linear Wireless Sensor Networks},

author = {Marco Zimmerling and Waltenegus Dargie and Jonathan M. Reason},

doi = {https://doi.org/10.1145/1367943.1367946},

isbn = {978-1-60558-010-4},

year  = {2008},

date = {2008-05-19},

urldate = {2008-05-19},

booktitle = {Proceedings of the 2nd ACM International Workshop on Context-Awareness for Self-Managing Systems (CASEMANS—co-located with Pervasive)},

pages = {24-33},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Zimmerling2008,

title = {An Energy-Efficient Routing Protocol for Linear Wireless Sensor Networks},

author = {Marco Zimmerling},

year  = {2008},

date = {2008-01-01},

urldate = {2008-01-01},

booktitle = {Proceedings of the GI Informatiktage},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Zimmerling2007,

title = {Energy-Efficient Routing in Linear Wireless Sensor Networks},

author = {Marco Zimmerling and Waltenegus Dargie and Jonathan M. Reason},

year  = {2007},

date = {2007-10-08},

urldate = {2007-10-08},

booktitle = {Proceedings of the 4th IEEE International Conference on Mobile Ad-hoc and Sensor Systems (MASS)},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Dargie2007,

title = {Wireless Sensor Networks in the Context of Developing Countries},

author = {Waltenegus Dargie and Marco Zimmerling},

year  = {2007},

date = {2007-08-01},

booktitle = {Proceedings of the 3rd IFIP World Information Technology Forum (WITFOR)},

abstract = {Wireless sensor networks are a network of small sensing devices which collaborate with each other to gather , process and communicate over wireless channel information about some physical phenomena. These self-organising, hig ly robust and energy efficient networks can be excellent sentin els for monitoring underground mining, wildlife and various ph ysical infrastructures such as bridges, pipelines, and buildings . This paper introduces wireless sensor networks, identifies spec ifi application domains and investigates their scope and usefu lness in the context of developing countries.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}