Papers by Matthias Deegener
IEE proceedings, 1998
Embedded systems, which combine an implementation of their functionality in hardware and software... more Embedded systems, which combine an implementation of their functionality in hardware and software, are of increasing interest to information processing in dedicated systems of various areas, such as automotive, instrumentation, robotics or telecom. The requirements of such systems impose a new design methodology known as codesign, and result in cooperating engineering efforts to conceive and to implement efficiently the functionality of an embedded system. This paper presents an approach to an exploration and assessment of feasible solutions from a large design space. The <conceptual design phase of embedded systems is emphasised, resulting in efficient methods to capture design specifications, to generate feasible solutions from basic design decisions, and to validate these solutions. The proposed methods are demonstrated for an embedded system foI telecom applications.
International Conference on VLSI and CAD, 1995
IEEE Access
Vehicle-to-X communication enables vehicles and other road users to exchange information in order... more Vehicle-to-X communication enables vehicles and other road users to exchange information in order to increase traffic efficiency and safety. All participants build a decentralized ad hoc network that can operate without the need for additional communication infrastructure. Two competing transmission technologies are available for this purpose. The WLAN-based approach ITS-G5 and the cellular-mobilebased LTE-V2X both enable the direct exchange of information between participants. Each of these technologies has individual advantages and disadvantages that recommend a specific technology for specific use cases. The hybrid usage of the two technologies in a common network can help to improve the reliability of transmissions for safety-critical applications by providing suitable transmission features for every use case, including dissemination range, latency, and channel throughput. The proposed hybrid V2X network approach provides participants with various options for selecting the transmission path to better adapt to the requirements of the specific use cases. The investigation is based on measurements of the transmission properties of ITS-G5 and LTE-V2X in real traffic environments as well as on simulations of hybrid V2X networks in a combined simulation environment for traffic and communication behavior. An important part of this investigation is the development of suitable dissemination models that describe the transmission behavior of both technologies. Initial results show that both technologies can be constructively combined to improve the reliability of communication for safety-critical applications in decentralized V2X networks.
2022 5th International Conference on Advanced Communication Technologies and Networking (CommNet)
The research project MuSE 1 provides an integrated software environment for the development of co... more The research project MuSE 1 provides an integrated software environment for the development of complex technical systems. The MuSE system can be divided into three parts: At first, MuSE supports the designer of the system by its tools for the specification, simulation and validation of the system's behavior. Secondly, the system's behavior is presented with a virtual reality interface. Finally, it provides the structured archiving of all documents in a hypermedia database. We implemented a prototype of the software environment and applied it to the development of a rear wheel steering system in cooperation with Daimler-Benz. The MuSE environment differs from other currently available simulation systems by the broad range of services supporting the design of technical systems. 1 Introduction The present paper gives an overview about the research project MuSE and describes some of the results we have achieved so far, especially on the field of virtual reality. The project ai...
This document summarizes and describes the main building blocks of the Car2X Communication System... more This document summarizes and describes the main building blocks of the Car2X Communication System as it is pursued by the Car2Car Communication Consortium (C2C-CC). “Car2X” means interactions among cars, between cars and infrastructures, and viceversa. It provides interested readers with an introduction to Car2X communications. It is intended to be a living document which will be complemented according to the progress of the work of the C2C-CC. One main objective of this document is to give insight into ongoing and upcoming activities, such as public funded projects which target to contribute to the C2C-CC specifications, an overview on ongoing work and results achieved so far. In addition, this document provides concepts and technologies that have been developed or identified by the C2C-CC and assessed as necessary building blocks to be proposed for a standard.
Softwaretechnik-Trends, 2005
2020 IEEE 5th International Symposium on Telecommunication Technologies (ISTT), 2020
Beside E-mobility and autonomous driving, the connectivity of vehicles is the major topics in res... more Beside E-mobility and autonomous driving, the connectivity of vehicles is the major topics in research activities in the automotive industry, today. The ITS-G5 standards family describes a Car-to-Car communication solution for Europe, based on the IEEE 802.11p WIFI-standard using 7 communication channels at 5.9 GHz. In this paper we propose an idea of location-based channel-selection. A vehicle selects the channel depending on its position and an associated virtual radio cell. The location-based channel usage shall reduce the local channel throughput and shall allow for a content- and situation dependent choice of the dissemination area. A simulation of urban traffic was implemented to create a significant channel congestion caused by a high number of moving vehicles. For comparison to the proposed approach, two other setups were implemented, an approach without throughput control mechanism and one with a Decentralized Congestion Control (DCC) algorithm.
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Papers by Matthias Deegener