SFB 876



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CNI focusses its research on the development and quantative analysis of new communication service and the associated network architecture and protocols. 

„High Dynamic Networks“, Emergency Response Mgmt. / Wireless Robotics

(Contact person: P. Bök)

Highly mobile communication notes and unpredictable network topologies require more and more intelligent algorithms and protocols for situation-and application-aware communications. On the one hand such networks are highly dynamic and characterized by perpetually divergent requirements on the communication link, such as data rate and delay. On the other hand the underlying circumstances of high dynamic networks, such as network coverage / signal strength, relative speeds of communication instances, the capacity and availability of network access points, are varying.

An important application field of highly dynamic networks can be found in the area of emergency information management as well as in the field of machine-machine communication (robotics). Current research topics in this area are:

  • Dynamic Network Planning and Mobility Modeling for autonomous Micro Unmanned Aerial Vehicles (UAV)
  • Coverage Optimization using Swarm based Team Strategies on UAVs
  • Network Security and Vertical Handover Methods for Distributed Safety-Critical Emergency Information Systems
  • Fast Mobile IP for Vertical Handover Support in IPv6 based Networks
  • Geo-based Routing Concepts and Mobility Strategies for High Vehicular Embedded WLAN Networks
  • Adaptive Quality of Service Algorithms and Channel Modeling for Mobile WiMAX and E-UTRA (LTE) 
  • Next Generation Public Safty Mobile Networks for public safty and disaster recovery (PSDR) organisations based on Trunked Radio (TETRA)
  • Service Architectures and Middleware-Development for XML based IT-federations
  • Efficient and secure naval Federation Technologies


„Highly Reliable Networks“,  Wireless Automation and Navigation for Production Systems

(Contact person: A. Lewandowski)

The development of wireless communication technologies opens the way for new application areas in Production Systems. A reliable and error free connection is essential for safe operation of industrial processes. If highly reliable wireless networking can be achieved for these time critical and safety-relevant processes, costs of maintenance and installation will be saved in comparison to wired solutions.

Wireless networks in this application area usually consist of stationary backbone nodes and a number of resource constraint and mobile devices, which are exchanging relevant sensor measurements, sending and receiving control commands, transfer billing data and handling user interaction. Coverage, Energy Consumption, Data Rates, Reliability, Availability and Latencies are all areas of research in order to enable highly reliable communication processes. Thinking of the application scenario "Monitoring of safety critical processes in industrial environments", geo-information is a central requirement for information processing. Highly precise localization techniques for indoor and outdoor scenarios are also evaluated:

  • Evaluation and Optimization of Enabling Communication Technologies and Protocols for Scalable Industrial Applications
  • Monitoring of Industrial Processes and Indoor Localization using ZigBee Networks
  • Optimizing the Energy Consumption of Autonomous Sensor Networks with intelligent Communication Protocols
  • Channel Modeling and Development of Novel Communication Services for Satellite Networks   
  • Employment of Galileo Services in Disaster Control
  • Queueing Theory for Resource-Constrained Communication Networks


ICT for Energy Systems and Electric Mobility

(Contact person: J. Schmutzler)

Information and Communication Technologies (ICT) play a key role in the transition from traditionally managed energy systems based on fossil fuel and nuclear power to more decentralized and volatile renewables: ICT is the core enabler for intelligent and efficient integration of such new energy resources in today's grid infrastructures and furthermore enables interworking with stakeholders within various parts of the value chain. From this development new and interdisciplinary applications emerge in the areas of smart grids, smart cities as well as smart traffic. An example is electric mobility: Electric Vehicles (EV) may contribute to the stabilization of the power grid by serving as battery storage in LV grids supporting the development towards highly distributed and renewable energy resources. At the same time however, EVs also influence the user’s mobility patterns impacting our traffic systems. Resulting from such scenarios, emerging new ICT applications are: the management, seamless integration, automation and coordination of controllable loads and generators, the monitoring of networks and resources, as well as the individual billing/payment for used or provided resources (e.g. smart metering). Resulting from such applications this research group focusses on the following challenges for ICT for those emerging markets:

  • Analysis and evaluation of wireless and cellular access networks for Smart Grid applications such as smart metering by domain-specific channel and traffic modeling as well as network planning.
  • Communication over the powerline: data transmission using narrowband and broadband powerline communications in Smart Grids and electric mobility.
  • Coupling of cross domain simulation environments (hybrid simulation) for energy and communication systems for the assessment of time-critical communication processes between substations.
  • Support technology evaluation for standardization of communication protocols in Smart Grid environments, e.g. Vehicle-to-Grid (V2G) communication interface and network automation in LV / MV / HV networks.
  • Seamless, vertical ICT integration of EVs into power grids as distributed energy resources based on the Internet of Things.
  • Development of model-based communication protocol validation as well as conformance and interoperability testing for Smart Grids, especially focusing on the V2G communication interface.
  • Enhancing portfolio for power system service provisioning (e.g. control reserve) by integrating pools of distributed EVs into power grids based on intelligent fleet management concepts.
  • EV fleet optimization by mobility pattern and load profile analysis under consideration of data security and privacy.