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Fabricio Carvalho de Gouveia


He received his M.Sc. in telecommunications systems from the Federal University of Parana (UFPR), Brazil in 2003.


In 2002 he was assistant lecturer for a course and seminar on broadband communications at Federa University of Parana (Especially HFC networks for CATV applications). In 2003 he worked as assistant professor at the Department for Electrical Engineering and of the Parana Tuiuti University – Brazil (www.utp.br) with focus on telecommunications. Since 2004 he is employee at Fraunhofer Institute FOKUS in Berlin, where he is performing his Ph.D. Study in the field Next Generation Networks.

Research Project

"DEVELOPMENT OF AN UNIFIED ACCESS CONTROL SYSTEM FOR SEAMLESS SERVICE PROVISION IN CONVERGING MOBILE COMMUNICATION SYSTEMS" An important objective for the 4G development is the accomplishment of a global covering network, looking for to integrate the several existent telecommunications systems (W-LAN, Wimax, UMTS/IMT2000, GSM, GPRS, Bluetooth, PSTN, etc.). This way, is intended to create a global network of mobile communications, independent of the system or technological generation. In this context, the development of an Unified Control System for 3G and beyond is the basis to reach this objective. The protocols based in IP applications are pointed as central piece for accomplishment of these global network, because they can provide integration among different systems. Consumer demand for higher rate wireless 3G and IP conectivity, for example Mobile chat, avatars, position location services, entertainment and games, form the basis for the studies motivation in this area. Authentication, Authorization and Accounting (AAA) protocols were initially deployed to provide dial-up PPP and terminal server access. Over time, with the growth of the Internet and the introduction of new access technologies, including wireless, Mobile IP and Ethernet, routers and network access servers (NAS), have increased in complexity and density, putting new demands on AAA protocols. The Session Initiation Protocol (SIP) is becoming the major signaling protocol for IP-based communication. Adoption of SIP by Third Generation Program Partnership (3GPP) in IP Multimedia Subsytem (IMS), the standardization body for next generation wireless networks, evidence the success of SIP technology.
The IMS works with a combination of these and other protocols. The need for Seamless Services access across networks acquires global access control scheme (AAA) plus media/service filtering adaptation. This research project will be an important step for integration and compatibility among the existing 3Gbeyond systems and has as principal objectives:

  • the study of access network technologies and related AAA approaches as well service capabilities (Quality of service – QoS, Media);
  • identification of integrated architecture (This objectiv will be achieved with study and review of ongoing Standards like 3GPP; IEEE; IETF, ETSI, etc. and the study mentioned above);
  • accomplishment of the necessary tests using FOKUS’s infrastructure;
  • application of the acquired knowledge in other projects and correlate areas


F. C. GOUVEIA, T. MAGEDANZ, “A Framework to Improve QoS and Mobility Management for Multimedia Applications in the IMS”, IEEE International Symposium on Multimedia, IEEE Computer Society Press, to appear IEEE Proceedings on December 2005. F. C. GOUVEIA, T. MAGEDANZ, “POBUCS Framework: Integrating Mobility and QoS Management in Next Generation Networks”, The 5th IEEE International Workshop on IP Operations & Management, Springer Verlag, vol. 3751, pp98-107, October 2005. F.C. GOUVEIA, T. MAGEDANZ, “Policy-based QoS Control in a WLAN – IMS Interworking Scenario”, WSEAS Transaction on Communcations, Issue 8, Volume 4, pp604-611, ISSN: 1109-2742, WSEAS Press, August 2005. F. C. GOUVEIA, T. MAGEDANZ, M. SHER,  “Understanding the Issues of Providing IMS Capabilities on Different Access Networks – The Use of Policies for QoS Provision”, Proceedings of the 9th WSEAS International Conference on Communications, ISBN: 960-8457-29-7, WSEAS Press, July 2005.
F.C.GOUVEIA, V.M.MORAIS and H.TERTULIANO, “A proposal for IP telephony systems in brazilian CATV scenario”, (Accepted for publication). 10 th International Conference on Telecommunications ICT'2003 February 23-28, 2003, Tahiti. Papeete, French Polynesia.
F.C.GOUVEIA, "A Methodology Proposal for GSM Systems Sizing, with a Case Analysis in an Urban area of Curitiba (Brazil)", Dissertation, Federal University of Parana, Brazil, 2003.

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Daniela Floroiu
Faculty IV – Elektrotechnik und Informatik

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