Looking at mobile solutions or wearable computing, it immediately becomes apparent that their user interfaces call for di?erent solutions than the desktop paradigm. This is not only due to the very small size of the displays but also predominantly to the need for a much stronger dependency on the applications. In addition, they feature a use of environmental sensors which has never been seen before enabling applications to run in an Ambient Intelligence Environment. This development requires new solutions and constitutes new research questions. With this book, Dr. Witt contributes to the goal...
Looking at mobile solutions or wearable computing, it immediately becomes apparent that their user interfaces call for di?erent solutions than the des...
Frau Dr. Rugge hat es mit dieser Arbeit unternommen, das Spannungsfeld zwischen Tat- keiten in der Arbeitswelt jenseits des Buros und der dafur bisher gedachten mobilen Anw- dungen auszuloten. Untersuchungen auf diesem neuen Gebiet sind sehr dunn gesat und gehen kaum uber Marketing-Studien fur mobile Endgerate mit ihren spezialisierten Anwendungen hinaus. Insofern ist diese Arbeit grundlegend, besonders da sie auf eine Perspektive abhebt, die einerseits sehr umfassend und daher anspruchsvoll ist, andererseits aber auch von einer weise aber leider erst zu spat in den ublichen...
Frau Dr. Rugge hat es mit dieser Arbeit unternommen, das Spannungsfeld zwischen Tat- keiten in der Arbeitswelt jenseits des Buros und der dafur bisher...
Eugen Lamers explains the principle of simulation speed-up in general and shortly demonstrates the technique RESTART for the simulation of rare events. He introduces the Short-Term Dynamic Simulation concept, developed for the planning of mobile radio networks.
Eugen Lamers explains the principle of simulation speed-up in general and shortly demonstrates the technique RESTART for the simulation of rare events...
The universalmobiletelecommunications system (UMTS) is a technical standard for a third generation (3G) telecommunication system. UMTS provides data rates more than three 1 times higher than its second generation (2G) predecessors. The increased speed en ables, for example, video calls, music downloads, or fast web surfing. The technology is already widely available. In 2007, a total of 166 commercial UMTS radio networks are operational in 66 countries covering all continents (UMTS Forum, 20 7), and there are already more than 100 million UMTS subscribers (3GToday. com, 2007; UMTS Forum,...
The universalmobiletelecommunications system (UMTS) is a technical standard for a third generation (3G) telecommunication system. UMTS provides data r...
Ulrich Turke introduces innovative models and algorithms for the evaluation of WCDMA/UMTS network performance. He establishes an advanced snapshot analysis method which allows the efficient and accurate analysis of large radio networks. The author develops two statistical evaluation methods which furnish quick approximations of relevant results from snapshot simulations. Finally, he discusses the application of these methods to automatic network optimization. The majority of the developed strategies are successfully applied in a commercial radio network planning and optimization tool.
Ulrich Turke introduces innovative models and algorithms for the evaluation of WCDMA/UMTS network performance. He establishes an advanced snapshot ana...
The key to a successful future mobile communication system lies in the design of its radio scheduler. One of the key challenges of the radio scheduler is how to provide the right balance between Quality of Service (QoS) guarantees and the overall system performance. Yasir Zaki proposes innovative solutions for the design of the Long Term Evolution (LTE) radio scheduler and presents several LTE radio scheduler analytical models that can be used as efficient tools for radio dimensioning. The author also introduces a novel wireless network virtualization framework and highlights the potential...
The key to a successful future mobile communication system lies in the design of its radio scheduler. One of the key challenges of the radio schedu...
Personliche Schutzausrustung und mit ihr die Schutzbekleidung sind im Wandel begriffen. Miniaturisierte, Textil-integrierte Computer eroffnen neue Moglichkeiten der Funktionsgestaltung. Mit kontextsensitiven und aktorischen Funktionen ausgestattet und zu Sensornetzwerken verknupft, ubernimmt die intelligente Schutzbekleidung ahnlich einem Fahrerassistenzsystem in einem Automobil die Beobachtung und Signalisierung von Gefahrdungen in einem Arbeitsumfeld. Christof Breckenfelder entwickelt einen methodischen Ansatz fur den Entwurf dieser mobilen Schutzassistenzsysteme. Die Vorteile der...
Personliche Schutzausrustung und mit ihr die Schutzbekleidung sind im Wandel begriffen. Miniaturisierte, Textil-integrierte Computer eroffnen neue ...
Max Gath presents a multiagent system for the optimization of transport logistics in highly complex and dynamic domains. The described solution dynamically optimizes processes and provides a high flexibility, scalability, robustness, and adaptability to individual customer demands.
Max Gath presents a multiagent system for the optimization of transport logistics in highly complex and dynamic domains. The described solution dynami...
In recent years, originally static and single purpose Wireless Sensor Networks have moved towards applications that need support for mobility and multiple purposes. These heterogeneous applications and services demand for a framework which distributes and discovers the various services, so that other pieces of equipment can use them. Markus Becker studies, extends, analytically models, simulates and employs the so called Trickle algorithm in measurements in a Wireless Sensor Network test bed for the service distribution. The obtained results apply to the application of the Trickle algorithm...
In recent years, originally static and single purpose Wireless Sensor Networks have moved towards applications that need support for mobility and mult...
Thomas Potsch investigates the channel properties of cellular networks and analyzes the effects that cause inefficient performance of legacy congestion control protocols, such as TCP and its variants, on cellular networks. Inspired by the findings, a novel delay-based congestion control protocol called Verus is proposed and evaluated across a variety of network scenarios. Furthermore, the author develops a stochastic two-dimensional discrete-time Markov modeling approach that dramatically simplifies the understanding of delay-based congestion control protocols.
Thomas Potsch investigates the channel properties of cellular networks and analyzes the effects that cause inefficient performance of legacy congestio...
