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QoE Workshop 2009-09-18 QoE Quantification & Feedback Markus Fiedler, Blekinge Institute of Technology, Dept. of Computing (COM), Karlskrona, Sweden. --. Who we are. Seniors @ COM/CCS. Ph.D. students @ COM/CCS. Charlott Eliasson Alex Popescu Tahir Nawaz Minhas Junaid Shaikh

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  1. QoE Workshop 2009-09-18 QoE Quantification & Feedback Markus Fiedler, Blekinge Institute of Technology,Dept. of Computing (COM), Karlskrona, Sweden --

  2. Who we are Seniors @ COM/CCS Ph.D. students @ COM/CCS Charlott Eliasson Alex Popescu Tahir Nawaz Minhas Junaid Shaikh Hussein Aziz Ph.D. students @ ING Ulrich Engelke et al. . • Markus Fiedler • Patrik Arlos • Lars Lundberg Senior @ ING • Hans-Jürgen Zepernick

  3. Our current QoE-related projects • QoEMoVi/QoEMoS – mobile video/streaming • QoEWeb – user patience (Euro-NF) • Testbed available • Mobicome – authentication • EViMonA – seamless communication • PERIMETER – seamless communication • Euro-NF • IA.7.5 workshop on socio-economic issues

  4. Recent and upcoming activities • 18th ITC Specialist Seminar on QoE • Annals of Telecommunications Special Issue on QoE and socio-economic issues of network-based services (to be finalised) • Dagstuhl seminar 09192 From QoS to QoE/QoX • Euro-NF Ph.D. course in January 2010 • Euro-NF Workshop on Socio-Economic Issues in NF (autumn 2010)

  5. Areas of interest • Real-life QoE assessment (new) • QoE–QoS relationships • How to quantify QoE as function of QoS? • dQoE/dQoS ~ QoE  exponential function • Improvement of QoE • Cross-layer approaches • Choice of networks (seamless communications) • Service chains • QoE feedback

  6. Some recent ”exponentials” for surfing • Download time T ~ a1exp(b1 L) L = loss ratio • Throughput R ~ a2exp(–b2 L) • QoE ~ a3 – b3 Lor QoE ~ a4exp(–b4 L) • QoE ~ a5exp(– b5 T) or QoE ~ a6 – ln(b6 L) • QoE ~ a7 + b7 ln(R)

  7. QoE feedback • In case of problems • Mostly implicit • Organised? • Trustworthy? • Origin: workwithin EuroNGI[D.WP.JRA.6.1.1]

  8. … and its importance [HP study 2000] • Understanding that there’s a lot of people coming together on the process makes us more tolerant • I think it’s great...saying we are unusually busy, there may be some delays, you might want to visit later. You’ve told me now. It I decide to go ahead, that’s my choice. • As long as you see things coming up it’s not nearly as bad as just sitting there waiting and again you don’t know whether you’re stuck

  9. Specific topic: QoE feedback • Towards users • When? How? Effects? Trust? • Towards providers/regulators • When? How? Use? Economics? • From the user (end) • When? Where? How?Implicit? Explicit? Physiological? • Economic feedback • Interest? Basis? Instruments? Misuse?

  10. Questions and Discussion QoEQuantification & Feedback Markus Fiedler, Blekinge Institute of Technology,Dept. of Computing (COM), Karlskrona, Sweden --

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