Jürgen Tacken

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In this paper we describe a part of our work on the automatic generation of target code from Stateflow models. We focus on the flow diagrams from the Stateflow component of MATLAB and describe how flow diagram models can be compiled into target code for embedded systems. Moreover, the paper describes a method for analyzing flow diagrams, allowing an(More)
Since 1970, centralized traffic-control systems have been installed to meet the demand of increasing mobility. Thus, roads can be used much more flexibly. Nevertheless, resources for centralized systems lack scalability, and the maintenance of such systems involves high cost and much effort. The significant and rapidly increasing improvements in(More)
This article presents our prototypical implementation of enabling services for context-aware real-time charging and billing based on the international Parlay X standard. The work is part of an open SOA platform allowing easy third-party composition of context- aware mobile services. The article illustrates why and how the standardized Parlay X Web Service(More)
In the near future, the trend of user-generated content and services currently observable in the Internet domain will also affect the mobile environment: mobile users will become able to easily create content and small services while on the move and offer them to social communities. Mobile users will no longer be pure consumers, they will also become(More)
Personalized and context-aware services are of high interest for mobile network operators (MNOs) to keep existing and win new subscribers. Although such services are already available, they are frequently offered by third parties in a rather stand-alone manner. The challenge is to come up with appropriate interfaces that allow (a) third parties to offer(More)
This article presents a concept to integrate real-time rating and charging functionality into a federated cloud environment. It is part of the work in the ITEA2 EASI-CLOUDS project that aims at advancing cloud computing in Europe, Egypt and Korea with the main objective to provide a federated cloud computing infrastructure with enhanced reliability,(More)
1 Introduction Today's embedded systems (ES) are characterized by more and more parallelism, distribution over different locations and hard real-time (RT) requirements. Consequently, the modern, structured design process has to deal with heterogeneous requirements and restrictions. Especially the integration of HW-design tasks with SW-design tasks and(More)
This paper addresses the specification of security modules in a mobile digital rights management (DRM) approach with a focus on copy detection mechanisms. The presented DRM approach aims at enhancing the latest DRM standard of the Open Mobile Alliance (OMA). In particular, we present a completed DRM infrastructure, introduce additional entities for billing(More)