Tales Heimfarth

Learn More
For the evaluation of wireless network protocols, simulation has established itself as a good compromise between cost and complexity, on the one hand, and accuracy of results, on the other hand. Most established network simulators, however, were originally developed for wired networks and only later extended to the wireless domain. Some simulators like(More)
As the editors spend considerable time for the preparation of this book, they would like to thank their families for their support. Wolfgang Ecker dedicates this book to his wife Monika and children Johannes, Stephanie, and Matthias. Wolfgang M ¨ uller dedicates this book to his wife Barbara and children Philipp, Maximilian, and Tabea. Rainer Dömer(More)
The emerging applications using sensor network technologies constitute a new trend requiring several different devices to work together and partly autonomously. However, the integration and coordination of heterogeneous sensors in these emerging systems is still a challenge, especially when the target application scenario is susceptible to constant changes.(More)
Advances in the area of wireless sensor networks enable a myriad of new applications. Communication is however still the most costly function in these networks. Regions with higher node density lead to a greater amount of energy waste through overhearing, collisions, etc., while not increasing the network's capacity. Therefore, we propose an emergent(More)
It can be observed that most technological artefacts are becoming intelligent "things that think" and most of these intelligent objects will be linked together to an "Internet of things". To master this omnipresent virtual "organism", completely new design and operation paradigms have to evolve. In this paper we discuss how research of our group at the(More)
This paper presents a method for federating disjoint segments of Wireless Sensor Networks (WSNs) using an Unmanned Aerial Vehicle (UAV) for message ferrying. Since network disconnections compromise the system operation, providing an alternative to mitigate disconnections can extend its lifetime. Several other proposals tackle the problem of disconnections(More)
This paper presents a basic and an extended heuristic to distribute operating system (OS) services over mobile ad hoc networks. The heuristics are inspired by the foraging behavior of ants and are used within our NanoOS, an OS for distributed applications. The NanoOS offers an uniform environment of execution and the code of the OS is distributed among(More)