Quality of Experience Evaluation for Smartphone Video Streaming over 3G Network: In the case of Addis Ababa, Ethiopia
No Thumbnail Available
Date
2019-12
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
Smartphones have become key enablers for users to exploit video streaming services such as
YouTube, Hulu, Netflix. Quality of experience (QoE) represents the actual visual perception of
users and it becomes a prominent concept. Considering the perception of users on the quality of
mobile video streaming service evaluation is an important factor to assess the actual performance
of the service that is provided to the users. So far, in Ethiopian Mobile Operator a combination of
objective and subjective quality evaluation for video streaming service of mobile phone users,
particularly for the most widely subscribed mobile 3G network, has not been performed.
In this thesis work, video streaming QoE evaluation over the 3G network in case of Addis
Ababa, for smartphone users is made using network-side data from NetProb3010 tool,
crowdsourcing tools (YoMoApp and Speedcheck Pro) from the application side and perception
of customers from the user side.
The application and user side measurement results were collected from a field experiment
campaign of 35 sample users after watching 8 different sample YouTube video sessions. In
general, achieved video streaming metric results show that both subjective and objective metrics
of QoE are not good and there is the unhappiness of smartphone customers with the current
video streaming service quality. For example, based on NetProb3010 results the average initial
delay is 19 seconds; the average number of stalling events is 0.38 times per minute and 6.46%
for average stalled time rate. The application-level results show that the average initial delay,
average number of stalling events, average stalled time duration and average video resolution
watched results are 17.3 seconds, 0.47 times per 30 seconds, 3.79 seconds and 230P,
respectively. Moreover, application-level average download throughput achieved during the
experiment period is 1.78Mbps. The above objective metric results are reflected in the subjective
metric (perception) result of the participants where the overall Mean Opinion Score (MOS) value
is 2.79.
Description
Keywords
Quality of Experience, Quality of Service, Video Streaming, Initial delay, Stalling events, Stalling duration, Video Resolution, Download Throughput, Mean Opinion Score, 3G, Mobile Operators, Customers, Crowdsourcing, Customer perception; Optimization, KQIs