Tiago Fioreze

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Student: Tiago Fioreze
Title: Self-management of hybrid optical networks
e-mail: T.Fioreze@ewi.utwente.nl
Affiliation: University of Twente, DACS group
Supervisor: Dr. A. Pras
Start: 1 September 2005
End: 17 February 2010
Funding: BSIK - Gigaport NG


Tiago Fioreze is a postdoctoral researcher at the Design and Analysis of Communication Systems (DACS) group, which belongs to the Faculty of Electrical Engineering, Mathematics, and Computer Science at the University of Twente.

Tiago Fioreze was born in Tapera, Rio Grande do Sul, Brazil on October 10th, 1979. He obtained his doctoral degree (Ph.D.) from the the University of Twente in 2010. A description of his PhD research can be found here. During his Ph.D., he was a participant of the European Network of Excellence on Management Solutions for Next Generation Networks (EMANICS) as well as a researcher of the Gigaport-NG Research on Networks project. He also graduated in Computer Science from the Federal University of Rio Grande do Sul in 2005 (Master of Science) and from the Federal University of Santa Maria in 2003 (Bachelor).

His current research is within the context of the Dutch cooperation project SPITS (Strategic Platform for Intelligent Traffic Systems). His topic of interest includes network management, car2car communication, ad hoc networks, wireless communication, and geocast. Currently, he is investigating the use and performance of geonetworking architectures, protocols, and algorithms for vehicular networks. As a hobby in his spare time, Tiago Fioreze likes taking photographs. Some of his photographs can be found on the Web at his Picasa Web album. He is also an enthusiastic about sports, specially indoor soccer, which he practices regularly. Passionate about soccer as most Brazilian people, his favorite soccer team is Grêmio Foot-ball Porto Alegrense.

PhD project description

Hybrid optical and packet switching networks are composed of multi-service optical switches that enable forwarding of data at multiple levels. Huge flows at the packet-level (IP-level) may be therefore moved to the optical-level, which is faster than the packet-level. Such move could be beneficial since congested IP networks could be off-loaded; leaving more resources for other IP flows. At the same time, the flows switched at the optical-level would receive better Quality of Service (QoS). The transfer of those flows to the optical-level requires the creation of dedicated light paths to carry them. Currently, two approaches are used for that purpose: the first is based on conventional management techniques and the second is based on GMPLS signaling. In both approaches, the decision which IP flows will be moved to light paths is taken by managers. As a result, only IP flows explicitly selected by such managers will take advantage of being transferred over light path connections. However, it may be that there are also other large IP flows, not known to the manager, that could potentially profit from being moved to the optical-level. The solution aimed in this Ph.D. thesis is to add self-management capabilities to the multi-service optical switches and make them responsible for identifying which IP flows should be moved to the optical level and establish and release light path connections for such flows.

Recent publications

  1. Rick Hofstede, Anna Sperotto, Tiago Fioreze, Aiko Pras, "The Network Data Handling War: MySQL vs NfDump", Proceedings of the 16th EUNICE Open European Summer School 2010 (EUNICE 2010), 28-30 June 2010, Trondheim, Norway. (to appear)
  2. Rudolf Biesbroek, Tiago Fioreze, Lisandro Zambenedetti Granville, Aiko Pras, "On the Performance of Grooming Strategies for Offloading IP Flows onto Lightpaths in Hybrid Networks", Proceedings of the 16th EUNICE Open European Summer School 2010 (EUNICE 2010), 28-30 June 2010, Trondheim, Norway. (to appear)
  3. Tiago Fioreze, "Self-Management of Hybrid Optical and Packet Switching Networks", CTIT Ph.D.-thesis Series No. 09-163, February 2010, ISSN 1381-3617, ISBN 978-90-365-2966-2 .
  4. Aiko Pras, Ramin Sadre, Anna Sperotto, Tiago Fioreze, David Hausheer, Jürgen Schönwälder. “Using NetFlow / IPFIX for Network Management”, Journal of Network and Systems Management (JNSM), Springer Verlag, December 2009, Vol. 17, Number 4, ISSN 1064-7570, pp. 482 - 487
  5. Giovane C.M. Moura, Tiago Fioreze, Pieter-Tjerk, Aiko Pras, "Optical Switching Impact on TCP Throughput Limited by TCP Buffers", Proceedings of the 9th IEEE International Workshop on IP Operations and Management (IPOM 2009), 29-30 October 2009, Venice, Italy, Lecture Notes in Computer Science, Vol. 5843, ISSN 0302-9743 ISBN 978-3-642-04967-5, pp. 161-166
  6. Tiago Fioreze, Lisandro Granville, Ramin Sadre, Aiko Pras, "A Statistical Analysis of Network Parameters for the Self-Management of Lambda-Connections", Proceedings of the 3rd International Conference on Autonomous Infrastructure, Management and Security (AIMS 2009), June 30 - July 2, 2009, Enschede, The Netherlands, Lecture Notes in Computer Science, Vol. 5637, ISSN 0302-9743 ISBN 978-3-642-02626-3, pp. 183-186

You can find a complete list of publications here.

External links