Blar i NTNU Open på forfatter "Skorin-Kapov, Lea"
-
A new QoE fairness index for QoE management
Hossfelt, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin (Journal article; Peer reviewed, 2018)The user-centric management of networks and services focuses on the Quality of Experience (QoE) as perceived by the end user. In general, the goal is to maximize (or at least ensure an acceptable) QoE, while ensuring ... -
Definition of QoE Fairness in Shared Systems
Hossfelt, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin (Journal article; Peer reviewed, 2016)User-centric service and application management focuses on the Quality of Experience (QoE) as perceived by the end user. Thereby, the goal is to maximize QoE while ensuring fairness among users, e.g., for resource allocation ... -
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 ... -
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 ... -
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 ... -
No Silver Bullet: QoE Metrics, QoE Fairness, and User Diversity in the Context of QoE Management
Hossfelt, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin (Chapter, 2017)Managing QoE is one of the most interesting direct applications of workable QoE models. Indeed, being able to predict how users perceive the quality of a service allows the service provider(s) to optimize its delivery, ... -
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, 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 ... -
Optimal Fairness and Quality in Video Streaming with Multiple Users
Moldovan, Christian; Skorin-Kapov, Lea; Heegaard, Poul Einar; Hossfelt, Tobias (Chapter, 2018)With the majority of video distribution services relying on the HTTP adaptive streaming paradigm, a great deal of research is geared towards developing algorithms and solutions for improving user perceived quality while ... -
QoE - Defining a User-Centric Concept for Service Quality
Varela, Martin; Skorin-Kapov, Lea; De Moor, Katrien; Reichl, Peter (Chapter, 2016) -
QoE Analysis of the Setup of Different Internet Services for FIFO Server Systems
Hoßfeld, Tobias; Varela, Martin; Heegaard, Poul Einar; Skorin-Kapov, Lea (Journal article; Peer reviewed, 2018)Queueing systems following a first-in-first-out (FIFO) strategy are well understood and various results are known for the response time of the system. However, the question arises how the results look like when taking into ... -
The Interplay between QoE, User Behavior and System Blocking in QoE Management
Hossfeld, Tobias; Atzori, Luigi; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin (Chapter, 2019)In this position paper we highlight a shortcoming of current QoE management approaches that typically do not take into due account the resulting user behavior. As a result, a divergence is introduced between the predicted ...