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Towards a QoE Framework From Quality of Service to Quality of Experience, Dagstuhl, May 5-8 2009

Towards a QoE Framework From Quality of Service to Quality of Experience, Dagstuhl, May 5-8 2009. Orange Labs. Sergio Beker, Frederic Guyard, Research & Development. Passive estimation. Translation functions. Composition through service modeling. OSI. ITU-T. TMF. ETSI.

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Towards a QoE Framework From Quality of Service to Quality of Experience, Dagstuhl, May 5-8 2009

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  1. Towards a QoE FrameworkFrom Quality of Service to Quality of Experience, Dagstuhl, May 5-8 2009 Orange Labs Sergio Beker, Frederic Guyard, Research & Development

  2. Passive estimation Translation functions Composition through service modeling OSI ITU-T TMF ETSI Where this line lies? From QoS to QoE: Cartography QoS Domain QoE Domain Objective measurable metrics Subjective (measurable?) metrics Need for a QoE Framework

  3. QoE Framework QoS & QoE Definitions Communications Ecosystem Service Model + = Actors & Roles Interfaces

  4. From B. Bauer, A. Patrick, "A Human factors extension to the seven-layer OSI reference model", IAENG International Journal on Computer Science, 2004. QoE FrameworkService Model Behavioral psychologists, psychophysics User HCI Ergonomists Application Telecommunications Experts OSI Network

  5. QoE FrameworkLayered service modeling Functional layer N', N'>N service quality indicators human factors state parameters Actor level N' Granted by SLA SLA dependency measurement function human factors Actor level N state parameters Functional layer N

  6. From K. Kilkki, “Quality of experience in communication ecosystems,” J. of Universal Computer Sciences, vol. 14, no. 5, pp. 615–624, 2008. QoE FrameworkCommunications Ecosystem Quality of Experience Group user person belongs is customer Ng-SLA Fitness-for-purpose Quality of Customer Experience (QoCE) Quality of User Experience QoUE service provider QoS SLA QoS SLA network application QoS SLA

  7. QoE FrameworkQuality Notions • Quality of Experience (QoE) lies in the subjective domain and is the quality experienced by an average person stripped of any usage context. It may be affected by the human factors intrinsic to the human behavior such as the psychological factors. • Quality of User Experience (QoUE) lies in the subjective domain and is the quality experienced by an average person considering the usage context. It may be affected by additional human factors considering the objectives of the person as a user. • Quality of Design (QoD) translates from the QoS given by the parameters measuring the application performance in the objective domain into the subjective domain through the application interface. • Fitness-for-Purpose (FfP) lies in the subjective domain of the customer considered as a group of average users in a given usage context. The FfP may be considered as equivalent to the QoCE, and may be part of Ng-SLAs dened in terms of task-oriented objectives. • Quality of Service (QoS) resides in the objective domain and is consistent with the denitions in ITU-T models. Only state parameters take part in the construction of the measurement function.

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