Cacheability of YouTube Videos in Cellular Networks

Speaker:Dr. Fehmi Ben Abdesslem and Dr. Anders Lindgren (Swedish Institute of Computer Science)

Time and Date: 14:00-15:00, Nov. 16, 2015

Place: Room 521, Physics Building, Handan Campus

 

 

Abstract

Video traffic now represents a growing proportion of the traffic on cellular networks, causing capacity problems for operators and increased delays for users. Studies have shown that deploying caches at the network level reduces the delay for the end-user and the overall traffic volume for the telecom operator. In this talk, the analysis of a large nation-wide dataset will be presented. The dataset contains real-life video requests sent by mobile users to a popular video streaming website. This analysis is the first to rely on such a large dataset, and sheds light on the optimal cacheability of video content with caches distributed in the cellular network, and how efficient some existing cache replacement algorithms are at reducing the number of requests sent to the video provider. Depending on the cache size and algorithm parameters, the analysis shows that up to 20.33% of the requests can be served by a local cache.

 

 

Biography

Dr Fehmi Ben Abdesslem received his M.Sc and PhD from the University of Paris 6 in 2008, before working as a research associate at the University of St Andrews, and at the University of Cambridge. He has then been awarded a Marie-Curie research fellowship from the European Commission (ERCIM) to join the Swedish Institute of Computer Science (SICS), and is now a permanent Senior Research Scientist at SICS, in the Decisions, Networks and Analytics laboratory. His research interests are centred on wireless networks, and include privacy and social aspects of mobile services, and data analysis from cellular and sensor networks.

 

Dr Anders Lindgren received his PhD from Luleå University of Technology in 2006, and worked at University College London and the University of Cambridge from 2007 to 2008. He is currently a senior researcher at the Swedish Institute of Computer Science (SICS) and an adjunct lecturer at Luleå University of Technology. Dr. Lindgren was a pioneer within DTN research (Delay Tolerant Networks) and has since migrated much of this experience into his ICN research (Information-Centric Networking). He is currently part of the team developing the NetInf ICN architecture and has been involved in the work of the IRTF DTN and ICN research groups. He is also the co-founder of the ExtremeCom conference series.