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vGridLab, a testbed aiming at the development, deployment and validation of virtualized smart grid functions is presented. The environment enables the evaluation of the functional aspects of virtualized smart grid applications as well as the non-functional characteristics of the underlying information and communication technology. We provide an overview of the vGridLab architecture, elucidate the...
In order to reach the goal of national governments to reduce the CO2 emission, the change from fossil mobility to electric mobility can be a mighty measure if Renewable Energy Sources (RES) are used for charging the electric vehicles (EV). A successful change needs charging infrastructure with special requirements. On the one hand charging infrastructure has to be available and on the other hand the...
The use of Information and Communication Technology (ICT)-based power system applications increases continually which poses new engineering challenges regarding the development, validation and management of both - the applications and the intertwined infrastructures. In this paper the need for a joint analysis of power and ICT systems for evaluating smart grid applications is discussed and a systematic...
Traditional energy networks with centralized supply are moving towards smart grids with distributed generation. The conventional form of large power plants will be replaced by the nationwide expansion of volatile renewable energies, but is intended to provide comparable or similar monitoring and control options. Concepts of virtual power plants provide an information and communication technology (ICT)...
Rising energy costs and strict regulations for carbon dioxide emissions require changes of current energy provisioning systems within the industry sector. For this purpose, this paper presents an approach for smart factories based on an intelligent energy management system considering the integration of new regenerative energy sources, improvement of energy-efficiency production means and replacement...
The increasing power feed-in from renewable energy sources entails an impact on the operation of transmission and distribution grids as well as the energy market and its players. It offers new opportunities for existing market players to expand their business and supports the market launch for new market players with new products. In this paper, different electricity products which are tested within...
In the context of enabling a comprehensive ICT infrastructure for the Smart Grid including Automatic Meter Reading (AMR) and Demand Side Management (DSM), the coexistence of narrowband and broadband access and indoor powerline communication systems is essential, since neither the customers accept performance loss of their private indoor networks, nor the Meter Reading Operator or Distribution System...
In this paper we propose distributed algorithms that solve the coverage problem in 3D space. In particular, we use a swarm of unmanned aerial vehicles (UAVs) in order to explore a possibly unknown area. Actual use cases include the automated acquisition of sensory data in operations that try to gain extensive knowledge about an area. First, we try to efficiently cover a predefined 3D space with multiple...
Unmanned Aerial Vehicles (UAVs) gained a lot popularity during the last years and are used in many applications ranging from reconnaissance over disaster recovery to remote sensing. In most applications some sort of communication link is needed to transmit telemetry and payload data. Especially for homeland security and civil operations the realization is sometimes very demanding due to missing radio...
The interoperability of the data sharing across different organizations is key for the efficient management of large-scale incidents. The system introduced in this paper will provide multi-disciplinary rescue teams with an integrated and intelligent communication and information system for efficient data sharing and emergency process management before, during and after major incidents. The project...
Unmanned Aerial Vehicles (UAV) enable the in-depth reconnaissance and surveillance of major incidents. Uncontrolled emissions of liquid or gaseous contaminants in cases of volcanic eruptions, large fires, industrial incidents or terrorist attacks can be analyzed by utilizing UAVs. Hence, the use of cognitive Unmanned Aerial Systems (UAS) for distributing mobile sensors in incident areas is in general...
Today's Smart Grid initiatives propose highly decentralized power supplies with an increased number of providers utilizing renewable energy resources. This idea is driven by the imminent requirement for improved sustainability of power industries and also by the legislative demand for more competitive energy market structures. Due to these intentions the number of regional market participants will...
Based on the recent developments in the area of lithium polymer batteries and carbon fiber-reinforced plastic materials Micro Unmanned Aerial Vehicles (MUAV) have significantly gained in importance. Therefore, the use of MUAV based swarms is a feasible approach for remote sensing, surveillance and in particular for emergency and rescue missions [1][2]. Developing MUAVs which operate at low altitudes...
The IEEE 802.16e mobile WiMAX standard allows for a wide variety of different application. Especially in cases where people rely on high speed network access in greater areas which is exclusively dedicated to them mobile WiMAX is a viable solution. One of these scenarios is the control of a swarm of miniature unmanned aerial vehicles (MUAV). These flying robots can be used for a wide set of different...
Based on recent developments in the area of lithium polymer batteries and carbon fiber-reinforced plastic materials Micro Unmanned Aerial Vehicles (MUAVs) significantly gain in importance. One of the challenges in using third party cellular networks for MUAV utilization lies in the directivity of the widely used antennas, which are usually illuminating the ground area but not the aerial user space...
Safety critical applications of IEEE 802.15.4 networks require autonomous network reconfiguration and dynamic meshing in case of node failures or changing environmental influences. In contrast to the classical approach of wireless sensor networks, this paper focuses on the development of enhanced network services like multimedia transmissions in a gas concentration monitoring scenario. Therefore,...
The fast access of essential and latest information from anytime and anywhere is crucial for the success of fire mission planning and is still a challenge, if requirements such as high performance, security and simplicity have to be met concurrently. However, the secure access to the distributed information of public authorities like building plans or medical patient data is currently mostly available...
A controversial technical discussion is raised whether WiMAX or LTE is the most promising 4G technology. Since LTE and WIMAX as 4G systems have both adopted OFDM as the preferred physical technology for better spectrum efficiency, the RF parts of those systems have to face major challenges. Hence the extensively applied error vector magnitude (EVM) can be used as an effective and efficient method...
IETF has proposed Fast Mobile IPv6 (FMIPv6) protocol, a seamless handover protocol, that reduces packet loss during the handover process by tunneling packets from the MN's previous IP subnet to the new IP subnet where they will get buffered. These buffered packets will get forwarded to the MN once it becomes IP capable in the new subnet. Although packet tunneling and buffering is an effective strategy...
Multimedia group communication services in mobile networks as a replacement for traditional trunked radio communication have attracted a lot of attention recently. This paper presents results from a newly developed simulation model to study the transfer of multimedia streams in group communication systems within different setups. As the real time ability of such a system has been identified as the...
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