This project develops communication protocols that can be used to provide various signaling services, such as Quality of Service resource reservation setup or firewall configuration in network nodes along the data path of end-to-end communications in IP-based networks.
SIGNET - New, Extensible Internet Signaling Protocols
The Next Steps in Signaling (NSIS) is a generic IP soft state signaling framework that can be used to provide various signaling services, such as QoS resource reservation setup or firewall configuration in network nodes along the data path of end-to-end communications in IP-based networks. It consists of a generic signaling transport protocol, any number of application-specific signaling protocols. In this project we investigate the protocol performance, robustness, complexity as well as correctness issues in these protocol components through prototypes, simulations and in-depth analysis.
Overview
Originally designed by researchers from Columbia University, University of Goettingen and Siemens, CASP presents a new signaling archicture for generic IP soft state signaling. Unlike RSVP, it separates a general signaling transport mechanism from next-hop discovery and application-specific signaling services. The general signaling transport mechanism, referred as messaging layer protocol, which transparently delivers the actual signaling client data, forms the fundamental basis of next generation signaling in IP-based networks. Due to reuse of existing transport protocols (e.g., TCP, SCTP, UDP), the messaging layer can be used in various scenarios, such as large sizes of signaling data or congested links. The Quality of Service (QoS) client protocol and the firewall/NAT signaling client protocol represents two typical applications demanding signaling. Both the messaging layer and client layer protocols, incorporating RSVP concepts in certain circumstances, are currently being standardized in the Next Steps in Signaling (NSIS) working group of the IETF, under terms of General Internet Signaling Transport (GIST) (which comprises the NSIS Transport Layer Signaling Protocol, NTLP) and NSIS Signaling Layer Protocols (NSLPs).
However, currently these protocols lack a systematic study of their behaviors, performance and complexity. In order to fill this gap, we propose to evaluate the protocol design principles and implementation performance, especiall responsiveness, protocol overhead, robustness and correctness, through prototypes, simulations and in-depth analysis.
We are currently investigating the following issues:
Implementation, simulation and performance evaluation of CASP/GIST, QoS NSLP, NAT/Firewall NSLP.
Diagnostic functionalities for GIST/NSIS
Protocol operations under route changes, mobility and tunneling situations.
(University of Göttingen Press, 15-Dec-2005) 2005 Foundation Council Award for Exceptional Publictions for Young Scholars awarded to Dr. Xiaoming Fu for the paper "Implementation and Evaluation of the Cross-Application Signaling Protocol (CASP)".
General Internet Signaling Transport (GIST) over SCTP,
Xiaoming Fu, Christian Dickmann, and Jon Crowcroft, Internet Engineering Task Force, Next Steps in Signaling (NSIS) Working Group,
March 2007.
Securing the Next Steps in Signalling (NSIS) Protocol Suite,
Xiaoming Fu, and Hannes Tschofenig, International Journal of Internet Protocol Technology, Volume 1, No. 4, pages 271-282,
InderScience Publishers, ISSN 1743-8209, August 2006.
Implementation and Performance Study of a New NAT/Firewall Signaling Protocol,
Xiaoming Fu, Niklas Steinleitner, Henning Peters, and Hannes Tschofenig, in Proceedings of the 26th International Conference on Distributed Computing Systems-Workshops (ICDCSW 2006), the 5th International Workshop on Assurance in Distributed Systems and Networks (ADSN2006), Lisboa, Portugal,
IEEE Computer Society, ISBN 0-7695-2541-5, July 2006.
Overhead and Performance Study of the General Internet Signaling Transport (GIST) Protocol,
Xiaoming Fu, Dieter Hogrefe, Henning Schulzrinne, Hannes Tschofenig, and Christian Dickmann, IEEE INFOCOM 2006, Bacelona, Spain,
IEEE, April 2006.
Principles and Experiments of Explicit Delay Control,
Xiaoming Fu, Xiaoyuan Gu, Dirk Markwardt, and Lars Wolf, Proceedings of IEEE Consumer Communications and Networking Conference (CCNC'06), Las Vegas, USA,
IEEE, January 2006.
A Quality-of-Service Resource Allocation Client for CASP,
Xiaoming Fu, Henning Schulzrinne, Hannes Tschofenig, and Jochen Eisl, Technical Report No. TB-IFI-2005-07, Institute for Informatics, University of Goettingen, Germany,
ISSN 1611-1044, November 2005.
Security Implications of the Session Identifier,
Xiaoming Fu, Hannes Tschofenig, Henning Schulzrinne, Robert Hancock, and Andrew McDonald, Technical Report No. TB-IFI-2005-08, Institute for Informatics, University of Goettingen, Germany,
ISSN 1611-1044, November 2005.
NSIS: A New Extensible IP Signaling Protocol Suite,
Xiaoming Fu, Dieter Hogrefe, Henning Schulzrinne, Attila Bader, Cornelia Kappler, Georgios Karagiannis, Hannes Tschofenig, and Sven Van den Bosch, IEEE Communications Magazine, Internet Technology Series, pages 133-141,
IEEE, October 2005.
Fast Seamless Handover Scheme and Cost Performance Optimization for Ping-Pong Type of Movement,
Xiaoming Fu, Zongkai Yang, Yuming Wang, Dasheng Zhao, and Jianhua He, Proceedings of the 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC 2005), Berlin, Germany,
IEEE, September 2005.
Advanced Authentication and Authorization for Quality of Service Signaling,
Xiaoming Fu, Tseno Tsenov, Hannes Tschofenig, and Eckhart Koerner, 1st IEEE/CreatNet Workshop on Security and QoS in Communication Networks (SecQoS 2005), Athens, Greece (in conjunction with the first IEEE International Conference on Security and Privacy for Emerging Areas in Communication and Networks - SECURECOM 2005),
IEEE Computer Society Press, September 2005.
RSVP Standards Today and the Path Towards a Generic Messenger,
Xiaoming Fu, Jukka Manner, In: H. de Meer and N. Bhatti (eds.), Proceedings of the 13th International Workshop on Quality of Service (IWQoS 2005), Passau, Germany, Lecture Notes in Computer Science, Volume 3552,
Springer Verlag, ISBN 3-540-26294-6, June 2005.
Modeling Route Change in Soft State Signaling Protocols Using SDL: a Case of RSVP,
Xiaoming Fu, Dieter Hogrefe, Constantin Werner, in A. Prinz, R. Reed and J. Reed (eds.), Proceedings of the 12th SDL Forum (SDL 2005), Grimstad, Norway, Lecture Notes in Computer Science, Volume 3530, pages 174-186,
Springer Verlag, ISBN 3-540-26612-7, June 2005.
Modeling Soft State Protocols with SDL,
Xiaoming Fu, Dieter Hogrefe, In: R. Boutaba et al. (Eds.), Proceedings of the 4th IFIP International Conference on Networking (Networking 2005), Waterloo, Canada, Lecture Notes in Computer Science, Volume 3462, pp. 289-302,
Springer Verlag, ISBN 3-540-25809-4, May 2005.
Analysis of Existing Quality-of-Service Signaling Protocols,
Xiaoming Fu, and Jukka Manner, Request for Comment (RFC) 4094,
Internet Engineering Task Force, May 2005.
Implementation and Evaluation of the Cross-Application Signaling Protocol (CASP),
Xiaoming Fu, Dieter Hogrefe, and Sebastian Willert, Proceedings of the 12th IEEE International Conference on Network Protocols (ICNP 2004), Berlin, Germany, pp. 61-71,
IEEE Computer Society Press, ISBN 0-7695-2161-4, October 2004.
Modeling Soft State Protocols with SDL,
Xiaoming Fu, Dieter Hogrefe, Technical Report No. IFI-TB-2004-02, Institute for Informatics, University of Göttingen, Germany,
ISSN 1611-1044, August 2004.
Implementation and Evaluation of the Cross-Application Signaling Protocol (CASP),
Xiaoming Fu, Dieter Hogrefe, and Sebastian Willert, Technical Report No. IFI-TB-2004-001, Institute for Informatics, University of Göttingen, Germany,
ISSN 1611-1044, April 2004.
Development of QoS Signaling Protocols in the Internet,
Xiaoming Fu, Proceedings of the 28th Annual IEEE Conferfence on Local Computer Networks (LCN 2003), Bonn/Königswinter, Germany, pp. 636-637, Workshop on High-Speed Local Networks,
IEEE Computer Society Press, ISBN 0-7695-2037-5, October 2003.
Mobility Support for Next-Generation Internet Signaling Protocols,
Xiaoming Fu, Henning Schulzrinne, and Hannes Tschofenig, Proceedings of the IEEE 58th Vehicular Technology Conference (VTC 2003-Fall), Orlando, Florida, USA, pp. 1979-1983, Symposium on IP Mobility,
IEEE, ISBN 0-7803-7954-3, October 2003.
CASP ? Cross-Application Signaling Protocol,
Xiaoming Fu, Henning Schulzrinne, Hannes Tschonfenig, and Andrew McDonald, Technische Berichte des Instituts für Informatik an der Georg-August-Universität Göttingen,
Institut für Informatik, Georg-August-Universität Göttingen, Germany, ISSN 1611-1044, IFI-TB-2003-01, (equivalent to the Internet draft ?CASP ? Cross-Application Signaling Protocol?, draft-schulzrinne-nsis-casp-01), March 2003.
Towards RSVP Lite: Light-weight RSVP for Generic Signaling,
Xiaoming Fu, Cornelia Kappler, Proceedings of the 17th International Conferfence on Advanced Information Networking and Applications, Xi'an, China, pp. 619-622,
IEEE Computer Society Press, ISBN 0-7695-1906-7, March 2003.
Design of CASP ? a Technology Independent Lightweight Signaling Protocol,
Xiaoming Fu, Henning Schulzrinne, Cornel Pampu, and Cornelia Kappler, Proceedings of the 1st International Workshop on Inter-domain Performance and Simulation (IPS 2003), Salzburg, Austria,
February 2003.
Analysis on RSVP Regarding Multicast,
Xiaoming Fu, Cornelia Kappler, and Hannes Tschofenig, Technische Berichte des Instituts für Informatik an der Georg-August-Universität Göttingen,
Institut für Informatik, Georg-August-Universität Göttingen, Germany, ISSN 1611-1044, IFI-TB-2002-001, October 2002.
