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3. Iterative Research Method Applied to the Design and Evaluation of a Dynamic Multicast Routing Scheme

Author

Papadimitriou, Dimitri, Coras, Florin, Rodriguez, Alberto, Carela, Valentin, Careglio, Davide, Fàbrega, Lluís, Vilà, Pere, Demeester, Piet, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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4. Measurement-Based Experimental Research Methodology

Author

Papadimitriou, Dimitri, Fàbrega, Lluís, Vilà, Pere, Careglio, Davide, Demeester, Piet, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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5. Introduction

Author

Fàbrega, Lluís, Vilà, Pere, Careglio, Davide, Papadimitriou, Dimitri, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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6. Summary and Conclusions

Author

Fàbrega, Lluís, Vilà, Pere, Careglio, Davide, Papadimitriou, Dimitri, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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10. Predicting network performance using GNNs: generalization to larger unseen networks

Author

Farreras, Miquel, Soto, Paola, Camelo, Miguel, Fàbrega, Lluís, and Vilà, Pere

Subjects
Computer. Automation, ITU AI/ML in 5G Challenge, Mass communications, Network Modeling, Graph Neural Networks, Digital Twins, Network Performance
Abstract

Autonomous Fifth Generation (5G) and Beyond 5G (B5G) networks require modelling tools to predict the impact on the performance when new configurations and features are applied in the network. Modeling modern networks through traditional mathematical analysis can lead to low accuracy, while the execution time and resource usage are high in network simulators. Machine Learning (ML) algorithms, and specifically Graph Neural Networks (GNNs), are suggested as a promising alternative since they can capture complex relationships from graph-like data, predicting properties with high accuracy and low resource requirements. However, they cannot generalize to larger networks, as their prediction accuracy decreases when input data (e.g., network topologies) is significantly different (e.g., larger) than the training data. This paper addresses the GNNs scalability issue by following a step-by-step approach, exploiting networking concepts to improve a baseline model. This work is framed in the 2021 International Telecommunication Union (ITU) and Barcelona Neural Networking Center - Universitat Politècnica de Catalunya (BNN-UPC) challenge. Results show that by following the suggested steps, applied on the RouteNet baseline developed by the BNN-UPC, can lower the Mean Average Percentage Error (MAPE) from 187.28% to 1.838%, improving the generalization significantly over larger graphs. Our approach is more simple than other solutions that participated in the challenge, but obtained similar results.

Published
2022
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11. A Packet Class-Based Scheme for Providing Throughput Guarantees to TCP Flows

Author

Fàbrega, Lluís, Jové, Teodor, Vilà, Pere, Marzo, José, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Magedanz, Thomas, editor, Madeira, Edmundo R. M., editor, and Dini, Petre, editor

Published
2005
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13. Summary and Conclusions

Author

Fàbrega, Lluís, primary, Vilà, Pere, additional, Careglio, Davide, additional, and Papadimitriou, Dimitri, additional

Published
2013
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14. Introduction

Author

Fàbrega, Lluís, primary, Vilà, Pere, additional, Careglio, Davide, additional, and Papadimitriou, Dimitri, additional

Published
2013
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17. Ant Colony Behaviour as Routing Mechanism to Provide Quality of Service

Author

Carrillo, Liliana, Marzo, José L., Fàbrega, Lluís, Vilà, Pere, Guadall, Carles, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Dorigo, Marco, editor, Birattari, Mauro, editor, Blum, Christian, editor, Gambardella, Luca Maria, editor, Mondada, Francesco, editor, and Stützle, Thomas, editor

Published
2004
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21. Iterative research method applied to the design and evaluation of a dynamic multicast routing scheme

Author

Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors, Universitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla, Papadimitriou, Dimitri, Coras, Florin-Tudorel, Rodríguez Natal, Alberto, Carela Español, Valentín, Careglio, Davide, Fàbrega, Lluís, Vila, Pere, Demeester, Piet M.A., Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors, Universitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla, Papadimitriou, Dimitri, Coras, Florin-Tudorel, Rodríguez Natal, Alberto, Carela Español, Valentín, Careglio, Davide, Fàbrega, Lluís, Vila, Pere, and Demeester, Piet M.A.

Abstract

Following the iterative research cycle process, this chapter elaborates a methodology and documents the steps followed for the design of a dynamic multicast routing algorithm, referred to as Greedy Compact Multicast Routing. Starting from the design of the dynamic multicast routing algorithm, we then evaluate by simulation on large-scale topologies its performance and compare them with the Abraham compact multicast routing scheme and two other reference schemes, namely the Shortest Path Tree (SPT) and the Steiner Tree (ST) algorithm. Performance evaluation and comparison include i) the stretch of the multicast routing paths also referred to as multicast distribution tree (MDT), ii) the memory space required to store the resulting routing table entries, and iii) the total communication or messaging cost, i.e., the number of messages exchanged to build the MDT. However, such performance evaluation is a necessary but not a sufficient condition to meet in order to expect deployment of multicast routing. Indeed, if one can determine that traffic exchanges are spatially and temporally concentrated, this would provide elements indicating the relevance for the introduction of such scheme in the Internet. Otherwise (if traffic exchanges are spatially and temporally diverse, i.e., highly distributed), then very few of them would benefit from a (shared) point-to-multipoint routing paths and multicast routing scheme would be less useful. For this purpose, we have conducted a multicast tree inference study. In turn, data and results obtained from these studies provides more realistic scenarios for emulation experiments against the currently deployed approach combining MBGP and PIMdeployed in IPTV or mVPN context., Peer Reviewed, Postprint (published version)

Published
2013

24. Measurement-based research: methodology, experiments, and tools

Author

Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors, Universitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla, Papadimitriou, Dimitri, Fàbrega, Lluís, Vila Fumas, Pere, Careglio, Davide, Demeester, Piet, Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors, Universitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla, Papadimitriou, Dimitri, Fàbrega, Lluís, Vila Fumas, Pere, Careglio, Davide, and Demeester, Piet

Abstract

In this paper, we report the results of the workshop organized by the FP7 EULER project on measurement-based research and associated methodology, experiments and tools. This workshop aimed at gathering all Future Internet Research and Experimentation (FIRE) experimental research projects under this thematic. Participants were invited to present the usage of measurement techniques in their experiments, their developments on measurement tools, and their foreseeable needs with respect to new domains of research not currently addressed by existing measurement techniques and tools., Peer Reviewed, Postprint (published version)

Published
2012

25. Measurement-based research

Author

Papadimitriou, Dimitri, primary, Fàbrega, Lluís, additional, Vilà, Pere, additional, Careglio, Davide, additional, and Demeester, Piet, additional

Published
2012
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32. A Packet Class-Based Scheme for Providing Throughput Guarantees to TCP Flows.

Author

Magedanz, Thomas, Madeira, Edmundo R. M., Dini, Petre, Fàbrega, Lluís, Jové, Teodor, Vilà, Pere, and Marzo, José

Abstract

TCP flows generated by applications such as the web or ftp require a minimum network throughput to satisfy users. To build this service, we propose a scheme with Admission Control (AC) using a small set of packet classes in a core-stateless network. At the ingress each flow packet is marked as one of the set of classes, and within the network, each class is assigned a different discarding priority. The AC method is based on edge-to-edge per-flow measurements, and it requires flows to be sent at a minimum rate. The scheme is able to provide different throughput to different flows and protection against non-responsive sources. We evaluate the scheme through simulation in several network topologies with different traffic loads consisting of TCP flows that carry files of varying sizes. In the simulation, TCP uses a new algorithm to keep the short-term sending rate above a minimum value. The results prove that the scheme guarantees the throughput to accepted flows and achieves high utilization of resources, similar to the ideal results of a classical hop-by-hop AC. [ABSTRACT FROM AUTHOR]

Published
2005
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33. A guaranteed minimum throughput service for TCP flows using measurement-based admission control.

Author

Fàbrega, Lluís, Jové, Teodor, Vilà, Pere, and Marzo, José

Subjects
*REMOTE access networks, *BOTTLENECKS (Manufacturing), *QUALITY of service, *COMPUTER software quality control, *TCP/IP, *FILE Transfer Protocol (Computer network protocol)
Abstract

We propose a new scheme for a network service that guarantees a minimum throughput to flows accepted by admission control (AC). The whole scheme only uses a small set of packet classes in a core-stateless network. At the ingress of the network each flow packet is marked into one of the sets of classes, and within the network, each class is assigned a different discarding priority. The AC method is based on edge-to-edge per-flow throughput measurements using the first packets of the flow, and it requires flows to send with a minimum rate. We evaluate the scheme through simulations in a simple bottleneck topology with different traffic loads consisting of TCP flows that carry files of varying sizes. We use a modified TCP source with a new algorithm that forces the source to send with a minimum rate. We compare our scheme with the best-effort service and we study the influence of the measurement duration on the scheme's performance. The results prove that the scheme guarantees the requested throughput to accepted flows and achieves a high utilization of network resources. Copyright © 2006 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Published
2007
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35. Metrics and Measurement Tools in OpenFlow and the OFELIA Testbed

Author

Körner, Marc, Almus, Herbert, Woesner, Hagen, Jungel, Tobias, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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36. Heterogeneous Testbeds, Tools and Experiments –Measurement Requirements Perspective

Author

Gavras, Anastasius, Bak, Andrzej, Biczók, Gergely, Gajowniczek, Piotr, Gulyás, András, Hrasnica, Halid, Martinez-Julia, Pedro, Németh, Felicián, Papagianni, Chrysa, Papavassiliou, Symeon, Pilarski, Marcin, Skarmeta, Antonio, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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37. Scalability Measurements in an Information-Centric Network

Author

Blefari Melazzi, N., Detti, A., Pomposini, M., Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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38. Methodology and Tools for Measurements on Wireless Testbeds: The NITOS Approach

Author

Giatsios, Dimitris, Apostolaras, Apostolos, Korakis, Thanasis, Tassiulas, Leandros, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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39. Various Detection Techniques and Platforms for Monitoring Interference Condition in a Wireless Testbed

Author

Liu, Wei, Keranidis, Stratos, Mehari, Michael, Vanhie-Van Gerwen, Jono, Bouckaert, Stefan, Yaron, Opher, Moerman, Ingrid, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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40. Experimental Performance Evaluation of Sensor-Based Networking for Energy Efficiency in Smart Buildings

Author

Angelopoulos, Constantinos Marios, Nikoletseas, Sotiris, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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41. A Monitoring Framework for Federated Virtualized Infrastructures

Author

Stéger, József, Laki, Sándor, Mátray, Péter, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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42. Measurements and Measurement Tools in OpenLab: Use Cases with Measurement Data Ontologies

Author

López de Vergara, J. E., Aracil, J., Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Fàbrega, Lluís, editor, Vilà, Pere, editor, Careglio, Davide, editor, and Papadimitriou, Dimitri, editor

Published
2013
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43. Measurement-based experimental research methodology

Author

Davide Careglio, Piet Demeester, Lluís Fàbrega, Pere Vilà, Dimitri Papadimitriou, Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors, Universitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla, Fàbrega, Lluís, Vilà, Pere, Careglio, Davide, and Papadimitriou, Dimitri

Subjects
Measurement, Technology and Engineering, Computer science, Management science, Informàtica::Sistemes d'informació [Àrees temàtiques de la UPC], 020208 electrical & electronic engineering, Experimental research, Methodology, 02 engineering and technology, 030204 cardiovascular system & hematology, Criteria, 03 medical and health sciences, 0302 clinical medicine, 0202 electrical engineering, electronic engineering, information engineering, Systems engineering, IBCN, Mineria de dades, Scientific validity, Data mining, Realization (probability)
Abstract

Aiming at creating a dynamic between elaboration, realization, and validation by means of iterative cycles of experimentation, Future Internet Research and Experimentation (FIRE) projects have been rapidly confronted to the lack of systematic experimental research methodology. Moreover, the “validation by experimentation” objective involves a broad spectrum of experimentation tools ranging from simulation to field trial prototypes together with their associated measurement tools. As experimental measurement results and corresponding tools play a fundamental role in experimental research, devising a systematic experimentation and measurement methodology becomes thus crucial for experimental research projects to achieve this objective for their various realizations, including protocols, systems and components. In turn, and in order to meet scientific validity criteria, the measurement results obtained when performing experimental research implies the availability of reliable and verifiable measurement tools, including on-line measurement data analysis and mining.

Published
2013

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