Recent Submissions

  • On Additive and Multiplicative QoS-QoE Models for Multiple QoS Parameters 

    Hossfelt, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin; Chen, Kuan-ta (Chapter; Conference object, 2016)
    Generic relationships between QoE and QoS have been inten- sively discussed in literature for single QoS parameters and often found to be logarithmic or exponential. While there are many experimental studies investigating ...
  • Designing for Redundancy: Nurses Experiences with the Wireless Nurse Call System 

    Klemets, Joakim Henrik M; Evjemo, Tor Erik; Kristiansen, Lill (Journal article; Peer reviewed, 2013)
    Patients rely on the nurse call system when in need of nurses’ assistance, while nurses rely on the nurse call system to coordinate work. In order to handle the highly mobile nature of nurses’ work, a wireless nurse call ...
  • Availability communication: Requirements for an awareness system to support nurses' handling of nurse calls 

    Klemets, Joakim Henrik M; Toussaint, Pieter Jelle (Journal article; Peer reviewed, 2015)
    The recent development of mobile technologies allows nurses to receive different types of requests anywhere. However, the interruptions generated by these devices often presents a challenge for nurses in their daily work ...
  • Examining the suitability of industrial safety management approaches for information security incident management 

    Line, Maria Bartnes; Albrechtsen, Eirik (Journal article; Peer reviewed, 2016)
  • Service availability in the NFV Virtualized Evolved Packet Core 

    Mahmood, Kashif; Gonzalez, Andres Javier; Helvik, Bjarne Emil; Nencioni, Gianfranco; Heegaard, Poul Einar; Grønsund, Pål R. (Conference object; Peer reviewed, 2015)
    Network Function Virtualization (NFV) promises to transform the way telecom providers design and operate networks and network services. Virtualized Evolved Packet Core (vEPC) is one of the NFV use cases that has got most ...
  • A Survey on Network Resiliency Methodologies against Weather-based Disruptions 

    Kmiecik, Wojciech; Rak, Jacek; Medeiros, Carmo; Heegaard, Poul Einar; Mas Machuca, Carmen; André, Joao; Jorge, Luisa; Musumeci, Francesco; Voyiatzis, Artemios; Pasic, Alija; Tornatore, Massimo; Travanca, Rui; Furdek, Marija; Hmaity, Ali; Simpson, Steven; Babarczi, Peter; Martins, Lucia; Følstad, Eirik Larsen; Braun, Torsten (Chapter; Conference object; Peer reviewed, 2016)
    Due to the increasing dependence on network ser- vices of our society, research has recently been concentrating on enhancing traditional protection strategies to withstand large- scale failures, as in case of disaster ...
  • Video QoE Killer and Performance Statistics in WebRTC-based Video Communication 

    Ammar, Doreid; De Moor, Katrien; Hossfelt, Tobias; Fiedler, Markus; Heegaard, Poul Einar; Xie, Min (Chapter; Conference object; Peer reviewed, 2016)
    Abstract: In this paper, we investigate session-related performance statistics of a Web-based Real-Time Communication (WebRTC) application called appear.in. We explore the characteristics of these statistics and explore ...
  • Managed Dependability in Interacting Systems 

    Helvik, Bjarne Emil; Nencioni, Gianfranco; Heegaard, Poul Einar; Wäfler, Jonas (Springer Series in Reliability Engineering;, Chapter; Peer reviewed, 2016)
    AdigitalICTinfrastructuremustbeconsideredasasystemofsystemsin itself, but also in interaction with other critical infrastructures such as water distributions, transportation (e.g. Intelligent Transport Systems) and Smart ...
  • A Fault-Tolerant and Consistent SDN Controller 

    Kamisinski, Andrzej; Gonzalez, Andres Javier; Helvik, Bjarne Emil; Nencioni, Gianfranco (Chapter; Conference object; Peer reviewed, 2016)
    Software-Defined Networking (SDN) is a new paradigm that promises to enhance network flexibility and innovation. However, operators need to thoroughly assess its advantages and threats before they can implement it. Robustness ...
  • Sharing is Power: Incentives for Information Exchange in Multi-Operator Service Delivery 

    Heegaard, Poul Einar; Biczok, Gergely; Toka, Lazio (Chapter; Conference object; Peer reviewed, 2016)
    A majority of 5G verticals have the potential to generate large revenues, but are expected to have strict Quality of Service (QoS) guarantees, and are projected to be delivered as a service chain of multiple, independent ...
  • The future of information security incident management training: A case study of electrical power companies 

    Bartnes, Maria; Moe, Nils Brede; Heegaard, Poul Einar (Journal article; Peer reviewed, 2016)
    Recent attacks and threat reports indicate that industrial control organizations are attractive targets for attacks. Emerging threats create the need for a well-established capacity for responding to unwanted incidents. ...
  • Availability Modelling of Software-Defined Backbone Networks 

    Kamisinski, Andrzej; Gonzalez, Andres Javier; Helvik, Bjarne Emil; Nencioni, Gianfranco; Heegaard, Poul Einar (Chapter; Conference object; Peer reviewed, 2016)
    Software-Defined Networking (SDN) promises to improve the programmability and flexibility of networks, but it may also bring new challenges that need to be explored. The main objective of this paper is to present a ...
  • Smart Grid Demand Response with Mutual Utility-Consumer Benefits 

    Dittawit, Kornschnok (Doctoral theses at NTNU;2016:288, Doctoral thesis, 2016)
    At present, the distribution of electricity is mostly one-way from utilities to consumers. On the other hand, communication of information such as energy consumption information for billing purpose is either a manual ...
  • Impact of SDN Controllers Deployment on Network Availability 

    Nencioni, Gianfranco; Helvik, Bjarne Emil; Gonzalez, Andres Javier; Heegaard, Poul Einar; Kamisinski, Andrzej (Research report, 2016)
    Software-defined networking (SDN) promises to improve the programmability and flexibility of networks, but it may bring also new challenges that need to be explored. The purpose of this technical report is to assess how ...
  • Implementing the Availability Model of a Software-Defined Backbone Network in Möbius 

    Nencioni, Gianfranco; Helvik, Bjarne Emil; Heegaard, Poul Einar (Research report, 2017)
    Software-defined networking (SDN) promises to im-prove the programmability and flexibility of networks, but it may bring also new challenges that need to be explored. One open issue is the quantitative ...
  • Modelling and Analyzing Cost-Effective Dependability in Passive Optical Networks 

    Fernández, Álvaro Fernández (Doctoral theses at NTNU;2017:34, Doctoral thesis, 2017)
    Lately, the proliferation of new applications and services as well as the penetration of the Internet has created a growing need for the deployment of broadband access networks. Mostly due to the high bandwidth they offer, ...
  • Learning Modeling Languages Using Strategies from Gaming 

    Richardsen, Øyvin (Master thesis, 2014)
    Learning about software modeling languages from documentation can be a difficult and confusing process, and many of the currently existing modeling language tutorials are only marginally better. At the same time, players ...
  • Investigation, Analysis and Implementation of Open Source Mobile Communication Software 

    Paudel, Suresh (Master thesis, 2016)
    Over the past few years, open source software has transformed the mobile communication networks. The development of VoIP technologies has enabled the migration of telco protocols and services to the IP network with help ...
  • Scalable Self-Adaptation Control system for simulated transport robots 

    Oplenskedal, Magnus Karste (Master thesis, 2016)
    This master project aimed to explore, research, develop and evaluate the design and creation of control software for simulated autonomous transport robots. A proof of concept were to be created using the Reactive Blocks ...
  • Achieving dependability in software-defined networking - a perspective 

    Helvik, Bjarne Emil; Heegaard, Poul Einar; Mendiratta, Veena (Chapter; Conference object; Peer reviewed, 2015)
    In this paper we take a closer look at the operationof software defined networking (SDN) in intra-domain networks.The focus is on the dependability issues related to interworking ofSDN controllers, network OS (NOS), and ...

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