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| description |
The miniaturization of electronic devices, starting from personal
digital assistants down to imperceptible sensor systems, combined
with cheap and effective communication evolved in the last years
into the new idea of integrating these trends into a network of
things. This trend, the third wave in computing, is called
Ubiquitous Computing.
In current research a lot of different groups work on a multitude of
sub areas of Ubiquitous Computing. One of these research groups is
the Center of Excellence 627 at the Universität Stuttgart that
works on Spatial World Models for Mobile Context-Aware Applications.
The main idea of this group is to find solutions for organizing the
enormous amount of information from (static and mobile) electronic
devices and the communication in between them in an open and
flexible infrastructure, called Nexus. This infrastructure will be
able to deliver a consistent view on a digital model of the real
world. To show the applicability of Nexus, in this paper we want to
propose an application from traffic telematics as an example for
mobile context-aware systems. There we can show on the one hand the
benefit of Nexus for new applications. On the other hand our
application serves as a prototype for the Nexus concepts.
The main idea of the application is to use the digital world models
of Nexus for a dynamic traffic assignment on a microscopic level. In
the classical chain of traffic modeling (demand, choice of mode/time
and choice of route as an input for traffic flow modeling) we will
first focus on the choice of route and time. The influence of
external parameters on the route choice behavior is still a present
question in traffic modeling. Therefore in our application we will
use the new trends in informatics for traffic engineering problems.
Especially the (admittedly visionary) assumption of having an
extensive view on traffic data in the so called world models of
Nexus will be used to investigate new methods for choice behavior
modeling. Expanding our existing approaches for modeling the traffic
flow, we will secondly make use of the historic view on the digital
world model for calibrating the traffic flow simulation. Typically
this would be done by centrally analyzing the data that is relevant
in the simulation in one application and comparing it to the real
situation. A decentralized concept is to use VANETs. In cooperation
with co-projects in Nexus we will investigate the portability of the
central situation recognition to decentralized VANETs.
This paper shows the principle ideas and a first concept of
implementing a dynamic traffic assignment in a ubiquitous system.
Further it shows the potential of the interdisciplinary cooperation.
The research will be done in cooperation with computer and
telecommunication scientists founded by the German Research
Foundation.
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| publisher |
University of Stuttgart : Collaborative Research Center SFB 627
(Nexus: World Models for Mobile Context-Based
Systems)
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| Stuttgart: Eigen-Verlag
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| type |
Text
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| Article in Proceedings
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| source |
In: Möhlenbrink, Wolfgang (ed.); Englmann, Frank (ed.); Friedrich,
Markus (ed.); Martin, Ullrich (ed.); Hangleiter, Ulrich (ed.):
Proceedings of the International Symposium Networks for Mobility
2006, Stuttgart, Germany
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| contributor |
Institut für Straßen- und Verkehrswesen, Abteilung
Straßenplanung und Straßenbau (ISV/SuS)
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| subject |
Simulation and Modeling General (CR I.6.0)
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