CBM: Online Strategies on Cost-Aware Buffer Management for Mobile Video Streaming

Speaker:Prof.Di Wu (Zhongshan University)

Time and Date: 16:00-17:00, Nov. 20, 2014

Place: Room 521, Physics Building, Handan Campus

 

 

Abstract

Mobile video traffic, owing to the rapid adoption of smartphones and tablets, has been growing exponentially in recent years and started to dominate the mobile Internet. In this talk, I will present an intelligent buffer management strategy called CBM (Cost-aware Buffer Management), for mobile video streaming applications. Our purpose is to minimize cost induced by un-consumed video data while respecting certain user experience requirements. To this objective, we formulate the problem into a constrained stochastic optimization problem, and apply the Lyapunov optimization theory to derive the corresponding online strategy for cost minimization. Different from conventional heuristic-based strategies, our proposed CBM strategy can provide provably performance guarantee with explicit bounds. We also conduct extensive simulations to validate the effectiveness of our proposed strategy and our experimental results show that CBM achieves significant gains over existing schemes.

 

 

Biography

Di Wu is an Associate Professor and Associate Department Head in the Department of Computer Science, Sun Yat-Sen University, Guangzhou, China. He received the B.S. degree from the University of Science and Technology of China, Hefei, China, in 2000; the M.S. degree from the Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China, in 2003; and the Ph.D. degree in Computer Science and Engineering from the Chinese University of Hong Kong, Shatin, Hong Kong, in 2007. From 2007 to 2009, he worked as a postdoctoral researcher in the Department of Computer Science and Engineering, NYU Polytechnic School of Engineering, advised by Prof. Keith W. Ross. He was the winner of IEEE INFOCOM 2009 Best Paper Award, and is a member of the IEEE, the IEEE Computer Society, the ACM, and the Sigma Xi. Currently, he serves as the Chair of Interest Group on Media Streaming, IEEE Multimedia Communication Technical Committee (MMTC), the Editor of IEEE/KICS Journal of Communications and Networks, the Guest Editor of IEEE Transactions on Circuits and Systems for Video Technology (IEEE TCSVT), Special Issue on "Visual Computing in the Cloud: Mobile Computing". He has been the TPC Co-Chair for IEEE Globecom Workshop on Cloud Computing Systems, Networks, and Applications (CCSNA 2014) and a frequent TPC member of leading international conferences. His research interests include multimedia networking, cloud computing, peer-to-peer networking, Internet measurement, and network security.