Michael Meincke

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Inter Vehicle Communication (IVC) has become a major topic during the last few years. Within the FleetNet project a novel mobile ad hoc network will be developed – based on the UMTS Terrestrial Radio Access Time Division Duplex (UTRA TDD) air interface – to interconnect vehicles and roadside gateways via a mobile Internet. In this paper we focus on the(More)
Nitrite oxidoreductase was isolated from mixotrophically grown cells of Nitrobacter hamburgensis. The enzyme purified from heat treated membranes was homogeneous by the criteria of polyacrylamide gel electrophoresis and size exclusion chromatography. The monomeric form consisted of two subunits with Mr 115000 and 65000, respectively. The dimeric form of the(More)
Society is growing increasingly dependent upon large-scale, highly distributed systems that operate in unbounded network environments, which like the Internet, have no central administrative control and no uni$ed security policy. Despite the best efforts of security practitioners, no amount of system hardening can assure that a system that is connected to(More)
Future enhancements in automobile technology will cope – besides traditional aspects, like security and driving conditions or comfort aspects of passengers – especially with the ability of vehicles to communicate. The aspirated enhancements in the ability of communication of vehicles should not only focus on the use of existing wireless (cellular) networks,(More)
Inter Vehicle Communication (IVC) has become a major topic during the last few years. Within the FleetNet project a novel mobile ad hoc network will be developed based on the UMTS Terrestrial Radio Access Time Division Duplex (UTRA TDD) air interface to interconnect vehicles and vehicles with roadside gateways via a mobile Internet. This paper focuses on(More)
For inter-vehicle communication the standard IEEE 802.11a/RA is proposed by the Intelligent Transportation Society, ITS. Different frequency channels at 5.9 GHz are allocated for the operation. The existing frequency channels, which are used, e.g., for safety-related purposes as well as entertainment, are exploited by means of frequency division multiple(More)
This paper proposes a vehicle-to-vehicle propagation model implemented with SDL. To estimate the channel characteristics for Inter-Vehicle communication, we first define a predicted propagation pathloss between the moving vehicles under three typical scenarios. A Ray-tracing method is used for the simple gamma model performance. Keywords—Inter-vehicle(More)
In this paper, a novel air-interface is presented for FleetNet<sup>1</sup>, a self-organizing network for inter-vehicle and vehicle-to-roadside communication. The air-interface is based upon the low-chip-rate version of UMTS/TDD. To adapt the cellular UMTS standard to an air-interface for ad hoc networks, changes of the physical layer, medium access control(More)