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Basuki, Akbari Indra (author), Kuipers, F.A. (author)Localizing network link failures is crucial to guarantee sufficient network capacity and to efficiently manage network resources. However, since most of today's networks use link aggregation to increase bandwidth, localizing a single physical link failure within such aggregated links is challenging. In this paper, we propose and evaluate...conference paper 2018
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Tapolcai, János (author), Vass, Balazs (author), Heszberger, Zalan (author), Biro, Jozsef (author), Hay, David (author), Kuipers, F.A. (author), Ronyai, Lajos (author)In order to evaluate the expected availability of a service, a network administrator should consider all possible failure scenarios under the specific service availability model stipulated in the corresponding service-level agreement. Given the increase in natural disasters and malicious attacks with geographically extensive impact,...conference paper 2018
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Oostenbrink, J. (author), Kuipers, F.A. (author)In this paper, we consider the vulnerability of a network to disasters, in particular earthquakes, and we propose an efficient method to compute the distribution of a network performance measure, based on a finite set of disaster areas and occurrence probabilities. Our approach has been implemented as a tool to help visualize the vulnerability...journal article 2017
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Çetinay Iyicil, H. (author), Kuipers, F.A. (author), Guven, A. Nezih (author)In this paper, we propose a novel technique to determine the optimal placement of wind farms, thereby taking into account wind characteristics and electrical grid constraints. We model the long-term variability of wind speed using a Weibull distribution according to wind direction intervals, and formulate the metrics that capture wind speed...journal article 2017
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Çetinay Iyicil, H. (author), Soltan, Saleh (author), Kuipers, F.A. (author), Zussman, Gil (author), Van Mieghem, P.F.A. (author)In this paper, we study cascading failures in power grids under the nonlinear AC and linearized DC power flow models. We numerically compare the evolution of cascades after single line failures under the two flow models in four test networks. The cascade simulations demonstrate that the assumptions underlying the DC model (e.g., ignoring power...journal article 2017
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Çetinay Iyicil, H. (author), Kekec, I.T. (author), Kuipers, F.A. (author), Tax, D.M.J. (author)Many countries aim to integrate a substantial amount of wind energy in the near future. This requires meticulous planning, which is challenging due to the uncertainty in wind profiles. In this paper, we propose a novel framework to discover and investigate those geographic areas that are well suited for building wind farms. We combine the key...conference paper 2017
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van den Berg, Daniël (author), Glans, Rebecca N. (author), de Koning, Dorian (author), Kuipers, F.A. (author), Lugtenburg, A.J.C. (Jochem) (author), Polachan, Kurian (author), Venkata, Prabhakar T. (author), Singh, Chandramani (author), Turkovic, B. (author), van Wijk, Bryan (author)The Tactile Internet presently constitutes a vision of an Internet over which, in addition to current communications modalities, a sense of touch can be transported. In that case, people would no longer need to be physically near the systems they operate, but could control them remotely. The main problem that needs to be solved to realize the...journal article 2017
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Muhammad Iqbal, M.A.F. (author), Kuipers, F.A. (author)Networks are typically embedded in non-homogeneous areas and different parts/regions of the network may therefore be at risk from different types of disasters. This non-homogeneity leads to difficulties in protecting the network against (the risk of) disasters. Network operators need to be able to integrate predictions on possible future...conference paper 2017
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Jansen, Bart (author), Goodwin, Timothy (author), Gupta, Varun (author), Kuipers, F.A. (author), Zussman, Gil (author)WebRTC has quickly become popular as a video conferencing platform, partly due to the fact that many browsers support it. WebRTC utilizes the Google Congestion Control (GCC) algorithm to provide congestion control for realtime communications over UDP. The performance during a WebRTC call may be influenced by several factors, including the...journal article 2017
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Märtens, M. (author), Kuipers, F.A. (author), Van Mieghem, P.F.A. (author)Networks are continuously growing in complexity, which creates challenges for determining their most important characteristics. While analytical bounds are often too conservative, the computational effort of algorithmic approaches does not scale well with network size. This work uses Cartesian Genetic Programming for symbolic regression to...conference paper 2017
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Krishna, Hedi (author), van Adrichem, N.L.M. (author), Kuipers, F.A. (author)Quality of Service (QoS) control is an important concept in computer networking, as it is related to end-user experience. While providing QoS guarantees over the Internet has long been deemed too complicated, the emergence of Software- Defined Networking (SDN), and OpenFlow as its most popular standard, may facilitate QoS control.<br/>In this...conference paper 2016
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van Adrichem, N.L.M. (author), Muhammad Iqbal, M.A.F. (author), Kuipers, F.A. (author)The past century of telecommunications has shown that failures in networks are prevalent. Failure recovery processes are therefore needed. Failure recovery is mainly influenced by (1) detection of the failure, and (2) circumvention of the detected failure. However, especially in SDNs where controllers recompute network state reactively, this...conference paper 2016
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Gomes, Teresa (author), Tapolcai, János (author), Esposito, Christian (author), Hutchison, David (author), Kuipers, F.A. (author), Rak, Jacek (author), de Sousa, Amaro (author), Iossifides, Athanasios (author), Travanca, Rui (author), André, João (author)Recent natural disasters have revealed that emergency networks presently cannot disseminate the necessary disaster information, making it difficult to deploy and coordinate relief operations. These disasters have reinforced the knowledge that telecommunication networks constitute a critical infrastructure of our society, and the urgency in...conference paper 2016
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Bizanis, Nikos (author), Kuipers, F.A. (author)The imminent arrival of the Internet of Things (IoT), which consists of a vast number of devices with heterogeneous characteristics, means that future networks need a new architecture to accommodate the expected increase in data generation. Software defined networking (SDN) and network virtualization (NV) are two technologies that promise to...journal article 2016
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Muhammad Iqbal, M.A.F. (author), Kuipers, F.A. (author)A cyber-physical system is often designed as a network in which critical information is transmitted. However, network links may fail, possibly as the result of a disaster. Disasters tend to display spatiotemporal characteristics, and consequently link availabilities may vary in time. Yet, the requested connection availability of traffic must be...conference paper 2016
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Muhammad Iqbal, M.A.F. (author), Trajanovski, S. (author), Kuipers, F.A. (author)Spatially-close network fibers have a significant chance of failing simultaneously in the event of man-made or natural disasters within their geographic area. Network operators are interested in the proper detection and grouping of any existing spatially-close fiber segments, to avoid service disruptions due to simultaneous fiber failures....conference paper 2016
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Yang, S. (author), Trajanovski, S. (author), Kuipers, F.A. (author)Background Solving the shortest path and min-cut problems are key in achieving high-performance and robust communication networks. Those problems have often been studied in deterministic and uncorrelated networks both in their original formulations as well as in several constrained variants. However, in real-world networks, link weights (e.g.,...journal article 2016
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Mas Machuca, Carmen (author), Secci, Stefano (author), Vizarreta, Petra (author), Kuipers, F.A. (author), Gouglidis, Antonios (author), Hutchison, David (author), Jouet, Simon (author), Pezaros, Dimitrios (author), Elmokashfi, Ahmed (author), Heegaard, Poul (author), Ristov, Sasko (author), Gusev, Marjan (author)Resilience against disaster scenarios is essential to network operators, not only because of the potential economic impact of a disaster but also because communication networks form the basis of crisis management. COST RECODIS aims at studying measures, rules, techniques and prediction mechanisms for different disaster scenarios. This paper...conference paper 2016
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Trajanovski, S. (author), Kuipers, F.A. (author), Hayel, Y. (author), Altman, E. (author), Van Mieghem, P. (author)Forming, in a decentralized fashion, an optimal network topology while balancing multiple, possibly conflicting objectives like cost, high performance, security and resiliency to viruses is a challenging endeavor. In this paper, we take a game-formation approach to network design where each player, for instance an autonomous system in the...conference paper 2015
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Trajanovski, S. (author), Kuipers, F.A. (author), Hayel, Yezekael (author), Altman, Eitan (author), Van Mieghem, P.F.A. (author)Forming, in a decentralized fashion, an optimal network topology while balancing multiple, possibly conflicting objectives like cost, high performance, security and resiliency to viruses is a challenging endeavor. In this paper, we take a game-formation approach to network design where each player, for instance an autonomous system in the...conference paper 2015