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Communicating Quality of Experience data for the development of multimedia services. Peter Brooks, Teolys (F) Bjørn Hestnes, Telenor R&D (N) Svein Heiestad, Telenor R&D (N) Carl Aaby, TANDBERG (N). Real-Time. Non Real-Time. Download Push TV Anytime. Live streaming Almost live TV.
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Communicating Quality of Experience data for the development of multimedia services Peter Brooks, Teolys (F) Bjørn Hestnes, Telenor R&D (N) Svein Heiestad, Telenor R&D (N) Carl Aaby, TANDBERG (N)
Real-Time Non Real-Time • Download • Push • TV Anytime • Live streaming • Almost live TV • Multimedia Conf • Videotelephony • Data conferencing • Avatar-telephony • Audio telephony • Real-time text • VoiceMail • VideoMail • E-Mail • Web surfing
Real-Time Person-to-Person Communication • Multimedia • Video • Data • Avatar • Audio • Text
Real-Time Person-to-Person Communication • Multimedia • Video • Data • Avatar • Audio • Text End-to-end components Input-Output devices Input-Output devices Routers Encoders keyboard keyboard Wireless Network Access PANs microphone microphone Tunnels, Firewalls, Encryption ISPs camera camera Decoders • Protocols • TCP-IP • UDP-IP screen screen WANs
Making informed decisions… • Requirements for QoE data • Making QoE data available within industry Based on case studies with • Network operators • Equipment manufacturers • Service providers
Requirements for QoE data • Provide guidelines on key topics • Provide tutorials • Link QoS and QoE variables • Provide QoE data for different guideline users • Provide information about user behaviour that is feasible to apply
Requirements for QoE data • Provide guidelines on key topics • Provide tutorials • Link QoS and QoE variables • Provide QoE data for different guideline users • Provide information about user behaviour that is feasible to apply
User choice Reliability of service Duration of call Cost-benefit User appearance Head / Upper body Eye contact Perception of other User groups Business persons Deaf persons Blind persons Purpose of communication Negotiation Problem solving Showing surroundings Group communication Multi-point Window configuration Human support Technical parameters Delay Packet loss Resolution The main topics of concern
Requirements for QoE data • Provide guidelines on key topics • Provide tutorials • Link QoS and QoE variables • Provide QoE data for different guideline users • Provide information about user behaviour that is feasible to apply
Packet loss Jitter Lip-synchrony / asynchrony Frame-rate / resolution Reliability of service Multi-point social presence Heterogeneous transcoding User communication modes User task types Influence of participant status Configurations for blind persons Configurations for deaf persons Quality of Experience Key concepts & lessons
Requirements for QoE data • Provide guidelines on key topics • Provide tutorials • Link QoS and QoE variables • Provide QoE data for different guideline users • Provide information about user behaviour that is feasible to apply
Intermediate Guideline Format IF Communication Situation USING Service Prescription WITH Technical Parameters THEN Usage Outcome
Requirements for QoE data • Provide guidelines on key topics • Provide tutorials • Link QoS and QoE variables • Provide QoE data for different guideline users • Provide information about user behaviour that is feasible to apply
Who would use QoE data? Equipment manufacturer Network operator • Sales • Marketing • Development engineering • Customer support • Technical research • HF research • Strategic network planning • Sales • Marketing • System integration • Network testing • Development engineering • Technical research • HF research Service provider • Service creation • Service host • Service operator • Service support • Sales • System integration • Terminal testing
Abstracting test results Guideline #1 Guideline #2 Guideline #n Guidelines IF ---------- USING ---------- WITH ---------l THEN ---------- IF ---------- USING ---------- WITH ---------l THEN ---------- IF ---------- USING ---------- WITH ---------l THEN ---------- Intermediate Guidelines Base Knowledge Units Test result #1 Test result #2 Test result #n Base knowledge
Requirements for QoE data • Provide guidelines on key topics • Provide tutorials • Link QoS and QoE variables • Provide QoE data for different guideline users • Provide information about user behaviour that is feasible to apply
Example QoE measure IF Communication Situation USING Service Prescription WITH Technical Parameters THEN Usage Outcome • Prevents adequate communication • Is usable • Offers acceptable quality • Offers good quality • Offers very good quality
Making QoE data available within industry ETSI Guide Web-based system
Conclusions • Service developers want end-user data • Much data not available • Tutorial support required • Standardisation bodies well positioned to disseminate QoE data • ETSI STF284 • http://portal.etsi.org/stfs/hf/STF284.asp Please visit the web-based system & provide your feedback!
Communicating Quality of Experience data for the development of multimedia services Peter Brooks, Teolys (F) Bjørn Hestnes, Telenor R&D (N) Svein Heiestad, Telenor R&D (N) Carl Aaby, TANDBERG (N)