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Introducing! Quality of Experience Fairness for Adaptive Video in the Network

Marwan Fayed, Univ of St Andrews
12-1pm  24th Oct 2018


"Why is my child getting HD on their phone, while I'm stuck 
with SD on my 50" TV?" This type of complaint is among the most common 
directed to streaming services such as Netflix and BBC. Recent studies 
observe that adaptive video streams, when competing behind a bottleneck 
link, generate flows that lead to instability, under-utilization, and 
unfairness. Additional measurements suggest there may also be a negative 
impact on users' perceived quality of experience as a consequence. The 
intuitive response may be, and has been, that application-generated 
issues should be resolved by the application. In this presentation I 
shall demonstrate that fairness, by any definition, can only be solved 
in the network. Moreover, that in an increasingly HTTP-S world, some 
form of client interaction is required. In support, a new network-layer 
'QoE-fairness' metric will be be introduced that reflects user 
experience. Experiments using our open-source implementation in the home 
environment reinforce the network-layer as the right place to attack the 
general problem.



Short Bio

Marwan Fayed is a Senior Lecturer at the University of St Andrews. 
He received his MA from Boston University and his PhD from the 
University of Ottawa, in 2003 and 2009 respectively, and in between 
worked at Microsoft as a member of the Core Reliability Group. In 2009 
he joined the University of Stirling, UK as Scottish Informatics and 
Computer Science Alliance (SICSA) Lecturer, alongside an appointment to 
'Theme Leader' for networking research in Scotland, 2014-2016. His 
current research interests lie in wireless algorithms, as well as 
general network, transport, and measurement in next generation edge 
networks. He is a Co-founder and Director of HUBS C.i.C., an ISP that 
delivers high quality backhaul to rural and remote networks, is 
recipient of an IEEE best paper award, and a Senior Member of both the 


CONNECT seminar room, Dunlop-Oriel House