Dissertation in the field of Networking Technology, Varun Singh
The title of thesis is Protocols and Algorithms for Adaptive Multimedia Systems
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Video is everywhere, it is the dominant traffic on the Internet! Disruptive Analysis Inc. believes that there are going to 2 billion active users in the world using video communication by 2019. This is based on the success of the ongoing standardization of the Web Real-time Communication (WebRTC) API and protocols by the World Wide Web Consortium (W3C) and the Internet Engineering Task Force (IETF). For WebRTC to be successful, it needs to be available to users on various devices (laptops, smartphones, tablets, set-top boxes), in diverse locations (office, home, while traveling at high speeds, in crowded areas). This requires the multimedia application (e.g., Hangout, Facetime, Skype, WeChat, …) to adapt the media quality based on the application requirements, device capabilities, and prevailing network conditions. This dissertation designs, develops, and evaluates algorithms that tune the media characteristics to meet the above constraints. The results are promising and show improvements to existing algorithms. They are also the basis of several standardization proposals (e.g. media transport metrics and statistics API, improved error-resiliency and congestion control schemes, added multipath features, etc.) and some techniques are expected to be widely deployed on the Internet (e.g., circuit breakers).
Opponent: Professor Michael Welzl, University of Oslo, Norway
Supervisor: Professor Jörg Ott Aalto University School of Electrical Engineering, Department of Communications and Networking