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 Comparison of IP/WDM transport network architectures for dynamic data traffic
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M. Köhn, S. Bodamer, C.M. Gauger, S. Gunreben, G. Hu, D. Sass.
Paper presented at the 11th European Conference on Networks and Optical Communications (NOC2006), Berlin, July 2006
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NOC2006_FMC comparative analysis
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J. F. Lobo Poyo, J. Fernandez-Palacios, A. Ferreiro, I. Mayans, F, J, Martin
This paper, that was presented at last NOC2006 Conference, provides a comparative analysis of architectures covering from opaque IP to dynamic optical architectures.
Abstract - Currently, many network operators are focusing their transport networks migration on a Fixed and Mobile Convergence (FMC) approach where IP is considered as the basic transport technology for providing both fixed and mobile application services. The most extended trend in FMC transport networks today is exclusively based on IP functionalities. According to such approach, traffic routing and reconfiguration is exclusively carried out at the IP layer and network scalability is assured by bandwidthover-provisioning. However, over-provisioning is not necessarily the most cost-efficientsolution, because this approach does not consider the impact of increasingly dynamic operation on the data link and physical layers, and the potential resource savings on the physical layers which may be achievable. So, the dynamic and agile characteristics of FMC networks, especially in the metro-core environment, will require a more dynamic resource management. In this paper, a comparative analysis of architectures covering from opaque IP to dynamic optical architectures we will be provided.
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Bandwidth Dimensioning in Stochastic Packet Networks
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Wolfram Lautenschlaeger
Paper presented at 8th ITG conference on Photonic Networks, May 2007 in Leipzig, Germany
Abstract: Dimensioning of link capacities in packet networks is commonly based on average traffic values together with some degree of overprovisioning. While mean traffic load is well understood and measurable, the degree of appropriate overprovisioning is matter of estimation and controversial disputes. We show that traffic fluctuations around the mean value, and in consequence the required overprovisioning, are well controlled by the end user access capacity. A theoretical analysis of the corresponding probability distributions is used to derive a practical dimensioning rule for packet links in general networks (LAN as well as WAN). The theory has been validated by transmission experiments with real network equipment. Packet loss measurements and sample traces are presented to illustrate the consequences on networking practice
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Techno-economic benchmarking of NOBEL solutions for end-to-end broadband ...
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Angel Ferreiro, Jan Derkacz, Francois Dorgeuille, Ralf Huelsermann, Marco Quagliotti, Sofie Verbrugge
Invited paper at NOC 2007 and OC&I 2007 12th European Conference on Networks & Optical Communication - June 19 - 21, Stockholm, Sweden
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Understanding VoIP from backbone measurements
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Rober Birke, Marco Mellia, Michele Petracca, Dario Rossi
Paper submitted to IEEE Infocom 2007.
Abstract - VoIP has widely been addressed as the technology that will change the Telecommunication model opening the path for convergence. Still today this revolution is far from being complete, since the majority of telephone calls are originated by circuit-oriented networks. In this paper, for the 1rst time to the best of our knowledge, we present a large dataset of measurements collected from the FastWeb backbone, which is one of the 1rst worldwide Telecom operator to offer VoIP and high-speed data access to the end-user. Traffic characterization will focus on several layers, focusing on both end-user and ISP perspective. In particular, we highlight that, among loss, delay and jitter, only the 1rst index may affect the VoIP call quality. Results show that the technology is mature to make the nal step, allowing the integration of data and real-time service over the Internet.
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Improving TCP performance with bufferless token bucket policing: A TCP friendly policer
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Ronald van Haalen, Richa Malhotra.
This paper was submitted to the IEEE International Conference on Communications (ICC 2007).
It solves a policing performance problem with TCP that was detected in NOBEL I and provides a solution for it. This work was done in A2.1.
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Applying Prediction Concepts to Routing on Semi-Transparent Optical Transport Networks
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Eva Marín, Sergio Sanchez, Xavier Masip, Josep Solé, Guido Maier, Walter Erangoli, Stefano Santoni, Marco Quagliotti
Paper invited at ICTON 2007 - 9th International Conference on Transparent Optical Networks July 1-5, 2007 - Rome, Italy
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Nobel at ECOC 2007
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A list of Nobel contributions to ECOC2007
 Nobel papers presented at ECOC2007
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BroadBand Europe - Antwerp, 3/6 December 2007
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Research and trends of optical transport networks
C. Cavazzoni (1), D. Colle (2), A. Di Giglio (1), G. Eilenberger (3), G. Ferraris (1), I. Lievens (2), H. Lonsethagen (4), H. Rohde (5), J. F. Palacios (6), M. Schiano (1)
1: Telecom Italia Lab, giuseppe.ferraris@telecomitalia.it;
2: Ghent University, IMEC- IBBT, didier.colle@intec.UGent.be ;
3: Alcatel-Lucent Deutschland, Gert.Eilenberger@alcatel-lucent.de ;
4: Telenor, hakon.lonsethagen@telenor.com
5: Nokia Siemens Networks, harald.rohde@nsn.com ;
6: Telefónica I+D, jpfpg@tid.es;
The IST project NOBEL phase 2 has addressed the evolution of transport networks in Europe in terms of architectures, traffic engineering and economics, control plane and transmission technology issues. This paper presents the main project results, highlighting the major technical problems and the related solutions envisaged by the project.
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