Blar i NTNU Open på forfatter "Heegaard, Poul Einar"

Viser treff 21-40 av 92

    • Dependability of the NFV Orchestrator: State of the Art and Research Challenges 

      Gonzalez, Andres Javier; Nencioni, Gianfranco; Kamisinski, Andrzej; Helvik, Bjarne Emil; Heegaard, Poul Einar (Journal article; Peer reviewed, 2018)
      The introduction of network function virtualisation (NFV) represents a significant change in networking technology, which may create new opportunities in terms of cost efficiency, operations, and service provisioning. ...

    • Deriving QoE in Systems: From Fundamental Relationships to a QoE-based Service-level Quality Index 

      Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin (Peer reviewed; Journal article, 2020)
      With Quality of Experience (QoE) research having made significant advances over the years, service and network providers aim at user-centric evaluation of the services provided in their system. The question arises how to ...

    • Design av løsning for automatisk måleravlesning av strøm (AMS) 

      Steinsland, Tor-Erik (Master thesis, 2011)
      Smart metering should be fully deployed before January 1st 2017 in Norway. The smart meters should be able to report consumption on a hourly basis, meaning that the amount of meter data will increase drastically. This ...

    • Digital Money Substitutes in a Two Sided Marked Perspective - A Case Study on Bitcoin 

      Malmo, Espen Sunde (Master thesis, 2013)
      In January 2009 a payment system that enabled transactions in a new digital currency, called bitcoin, were launched. Bitcoin is based on a peer-to-peer (P2P) network where users in the network collectively process and ...

    • Enhancing the Resilience of Modern Mobile Networks 

      Vatten, Trond (Master thesis, 2023)
      Ettersom verden blir stadig mer avhengig av internett, krever flere og flere tjenester internettforbindelse - alt fra selvkjørende biler og fjernki- rurgiske operasjoner til integrasjon av utvidet og virtuell virkelighet ...

    • Evaluating Local Disaster Recovery Strategies 

      Oostenbrink, Jorik; Kuipers, Fernando; Heegaard, Poul Einar; Helvik, Bjarne Emil (Journal article; Peer reviewed, 2018)

    • Evaluating QoS and QoE Dimensions in Adaptive Video Streaming 

      Stensen, Julianne M. G. (Master thesis, 2012)
      The focus of this thesis has been on Quality of Service (QoS) and Qualityof Experience (QoE) dimensions of adaptive video streaming. By carryingout a literature study reviewing the state of the art on QoS andQoE we have ...

    • Exploring the Usefulness of Machine Learning in the Context of WebRTC Performance Estimation 

      Ammar, Doreid; De Moor, Katrien; Skorin-Kapov, Lea; Fiedler, Markus; Heegaard, Poul Einar (Chapter, 2019)
      We address the challenge faced by service providers in monitoring Quality of Experience (QoE) related metrics for WebRTC-based audiovisual communication services. By extracting features from various application-layer ...

    • Field Test of Mobile Terminals in a Wireless City 

      Stray, Petter (Master thesis, 2007)
      A rising question today is whether or not wireless networks and terminals are at the border of being able to compete with the cellular phone service. A variety of terminals are available and citywide wireless networks are ...

    • A Framework for Spatial and Temporal Evaluation of Network Disaster Recovery 

      Gajic, Marija; Heegaard, Poul Einar; Furdek, Marija (Chapter, 2020)
      The support of vital societal functions requires a reliable communication network, especially in the presence of crises and disastrous events. Disasters caused by natural factors including earthquakes, fires, floods or ...

    • From QoS Distributions to QoE Distributions: a System's Perspective 

      Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin; Fiedler, Markus (Chapter, 2020)
      In the context of QoE management, network and service providers commonly rely on models that map system QoS conditions (e.g., system response time, paket loss, etc.) to estimated end user QoE values. Observable QoS conditions ...

    • Fundamental Relationships for Deriving QoE in Systems 

      Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin (Chapter, 2019)
      In the context of subjective user studies conducted to derive relationships between influence factors and QoE, user diversity leads to distributions of user scores for test conditions. Such models are commonly exploited ...

    • A Greener Experience: Trade-Offs between QoE and CO<inf>2</inf> Emissions in Today's and 6G Networks 

      Hossfeld, Tobias; Varela, Martin; Skorin-Kapov, Lea; Heegaard, Poul Einar (Peer reviewed; Journal article, 2023)
      While users of Internet multimedia services demand high Quality of Experience (QoE), meeting these demands results in energy consumption along the service delivery path, from the end user's device, through the network to ...

    • A Holistic Approach to Dependability Modeling and Analysis of Smart Distribution Grids 

      Zerihun, Tesfaye Amare (Doctoral theses at NTNU;2021:56, Doctoral thesis, 2021)
      Lately, the distribution grid has been under a significant transformation, with a pervasive integration of Information and Communication Technology (ICT) for an enhanced operation and management of the grid. Some of the ...

    • Idol Show in China 

      Draper Gil, Gerard (Master thesis, 2006)
      Our objective is to test the performance of a real SMS Processing System. We will work with Boost Communications, a norwegian company that is developing a SMS Processing System to sell interactive SMS solutions. With our ...

    • Impact of Conversation Task When Testing QoE in WebRTC 

      Haga, Marie (Master thesis, 2018)
      Video conferencing was previously associated with dedicated hardware and professional conferencing systems. The last years applications and services enabling Real-Time Communication with no need for additional software ...

    • 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 and Simulating the Cross-Entropy Ant System 

      Brugge, Jonathan (Master thesis, 2010)
      The Cross-Entropy Ant System (CEAS) has been implemented in ns-3. The implementation has been validated against the latest ns-2 implementation and some extra simulations have been performed. Apart from that, experiences ...

    • 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 ...

    • Including Failure Correlation in Availability Modeling of a Software-Defined Backbone Network 

      Nencioni, Gianfranco; Helvik, Bjarne Emil; Heegaard, Poul Einar (Journal article; Peer reviewed, 2017)
      Software-defined networking (SDN) promises to improve the programmability and flexibility of networks, but also brings new challenges that need to be explored. The main objective of this paper is to include failure correlation ...