Quality of experience (QoE) is the degree of delight or annoyance of the user of an application or service. It results from the fulfillment of his or her expectations with respect to the utility/enjoyment of the application or service in the light of the user’s personality and current state.

1. QoE: User Quality of
Experience

2. Index
1. Why Qoe?
2. Service Failures Due To Inadequate QoE
Considerations
3. QoE-related Standardization Projects
4. Definition Of Quality Of Experience
5. QoE Strategies In Practice
6. Factors Influencing QoE
7. Measurements Of QoE

3. 1. Why QoE?

4. Online Video Content Delivery

5. • User expectations can also be influenced by
capabilities that currently can only be
adequately offered by broadcast TV. These
capabilities include the following:
– Trick mode A playback feature in any mode other
than forward playback at the recorded speed of
the audio/video content (1x). Examples include
fast-forward, slow motion, reverse, and random
access.
– Contextual experiences across multiple screens,
which includes the ability to pause viewing on one
screen and switch to another, thus letting users
take the video experience with them on the go.

6. 2. SERVICE FAILURES DUE TO INADEQUATE
QOE CONSIDERATIONS

7. 3. QOE-RELATED STANDARDIZATION
PROJECTS

8. • The Video Quality Experts Group (VQEG) is
currently working on draft ITU recommendations
for 3D video quality assessments for home
entertainment systems.
• Another initiative is by the Quality of Experience
Estimators in Networks (QuEEN) project, which is
a multi-organizational and multinational initiative
aimed at addressing issues relating to online
services such as voice, video, and IPTV.

9. 4. DEFINITION OF QUALITY OF
EXPERIENCE
Definition of Quality
Quality is the resulting verdict
produced by a user after
he/she has carried a
“comparison and judgment
process on an observable
occurrence or event. Definition of Experience
Experience is an individual’s
description of a stream of
perceptions, and his/her
interpretation of one or multiple
events. An experience might
result from an encounter with a
system, service, or an artifact.

11. Quality of experience (QoE) is the
degree of delight or annoyance of the
user of an application or service. It
results from the fulfillment of his or
her expectations with respect to the
utility/enjoyment of the application
or service in the light of the user’s
personality and current state.

12. 5. QOE STRATEGIES IN PRACTICE
The QoE/QoS Layered Model

13. 6. FACTORS INFLUENCING QOE
1. User demographics
2. Type of device
3. Content
4. Connection type
5. Media (audiovisual) quality
6. Network
7. Usability
8. Cost

14. 7. MEASUREMENTS OF QOE
• Three QoE measurement methods:
1. subjective assessment
2. objective assessment
3. end-user device analytics

15. • Subjective Assessment
1. Characterize the service
2. Design and define test matrix
3. Specify test equipment and materials
4. Identify sample population
5. Subjective methods
6. Analysis of results

16. • Objective Assessment
1. Database of subjective data
2. Preparation of objective data
3. Objective methods
4. Verification of results
5. Validation of objective model

17. Reference
Foundations of Modern Networking: SDN,
NFV, QoE, IoT, and Cloud
by William Stallings
Mustufa Sir

18. Thank you
Mustufa Sir