Uni Göttingen
computer networks group     Computer Networks Group
Institute of Computer Science
Georg-August-Universität Göttingen 		                                                                                               
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Research Areas of the Computer Networks Group

The research in the Computer Networks group headed by Prof. Dr. X. Fu falls into the following five major themes:
  • New architectures and platforms for large-scale networks and distributed systems, for instance the design and evaluation of resilient overlay architectures (e.g., GONE) and experimentations with PLANET-LAB, XORP and other platforms, including their system performance and enhancements, operating systems support, as well as security aspects.
  • Internet QoS and NAT/firewall middlebox control: in scope of a collaborative effort SIGNET we study the design, development and standardization of a new extensible network-layer signaling protocol suite after RSVP, including CASP/NSIS signaling protocols for QoS resource reservations and NAT/firewall middlebox traversal, among the others, and work closely related to IRTF EME RG. This effort has been also extended in the scope of ENABLE and VIDIOS projects.
  • Internet multimedia and services. This includes (in VIDIOS and beyond) P2P, SIP/IMS and signaled edge-to-edge QoS for media streaming over (G)MPLS networks, a proposed  DMMP overlay multicast framework (well - also related to IRTF SAM RG), and (in MING-T) the effort towards a converged network platform design which attempts to integrate the recent Chinese digital broadcast standard DTMB and the European DVB-H technologies with the scalable video coding techniques and mobile communication technologies such as mobile IP, WLAN and 3G.
  • Internet mobility, autonomic communications and cross-layer design. For example, within ENABLE and TWIN, we aim to develop and validate architecture and solutions for IPv6 based mobility networks providing advanced authorization and bootstrapping services, middlebox traversal (such as flexible and dynamic configuration of firewalls) and resource control, multihoming and QoS support, as well as investigate emerging mobility management paradigms and performance optimizations, towards the future generation mobile networks (B3G/4G).
  • Formal methods and modeling for protocol design, validation and analysis: during the protocol design and development efforts of SIGNET, MobiAuth and PTLS we encounter(ed) various issues in the spec flaws, undeterministic behaviors and security holes, hence we utilize formal tools such as SDL/MSC/UML/Casper to model the functional behaviors and to detect possible design flaws, deadlocks, or livelocks; to analyze performance and to optimize protocol parameters we use analytical, simulation and modeling tools such as queueing theory and Markovian chains, ns-2, OPNET and OMNeT++.
Research projects

External collaborators:
Research conducted in Computer Networks Group has been frequently collaborating with external research labs from both the academia and the industry, including those have been sponsored by the EC (ENABLE, Daidalos-II, MING-T), ETSI (IPT), DAAD PPP (SIGNET), German Telecom (VIDIOS), Siemens (PTLS), Panasonic (MobiAuth), and many other sources such as Chinese Scholarship Council and the University of Göttingen (TCPNP).
Over the past few years we have worked with, among others, the following institutions:
  • Alcatel-Lucent and Bell Labs, USA/the Netherlands/Belgium
  • AT&T Labs, USA
  • Beijing University of Post and Telecommunications (BUPT), China
  • British Telecom, UK
  • Brunel University, UK
  • China Telecom, China
  • Columbia University, USA
  • Create-Net, Italy
  • Deutsche Telekom, Germany
  • DoCoMo Euro-Labs, Germany
  • Ecole Nationale Superieure des Telecommunications (ENST), Bretagne, France
  • Ericsson Research, Sweden
  • European Telecommunications Standards Institute (ETSI), France
  • France Telecom, France
  • Fraunhofer Institut fuer Offenen Kommunikationssysteme (FOKUS), Germany
  • Helsinki University of Technology (HUT/TKK), Finland
  • Huawei Technologies, China
  • Industrieanlagen-Betriebsgesellschaft mbH (IABG), Germany
  • Institut National des Telecommunications (INT), Evry, France
  • Karlstad University, Denmark
  • Lulea University of Technology (LTU), Sweden
  • Medicine School Hanover, Germany
  • Microsoft Research, USA/China/UK
  • NEC Europe Labs, Germany
  • Nokia and Nokia Research Center, Finland/USA
  • Nokia Siemens Networks (NSN), Finland/Germany
  • Panasonic, USA
  • Royal Institute of Technology (KTH), Sweden
  • Siemens and Roke Manor Research, Germany/UK
  • Swansea University, UK
  • Technical University of Berlin, Germany
  • Technical University of Braunschweig, Germany
  • Telecom Italia Lab, Italy
  • Telefonica I+D, Spain
  • Tsinghua University, China
  • University College London, UK
  • University of Aveiro, Portugal
  • University of Cambridge, UK
  • University of Coimbra, Portugal
  • University of Hamburg, Germany
  • University of Hanover, Germany
  • University of Helsinki, Finland
  • University of Murcia, Spain
  • University of Twente, the Netherlands
  • University of Waterloo, Canada
 
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