通知公告

学术报告通知(编号:2017-36)

2017-07-13

       报告题目:Dynamic Adaptive Streaming over HTTP (DASH) with Software Defined Networking (SDN)

 

       报告人:Roger Zimmermann
 

       单位:School of Computing, National University of Singapore

      

       报告时间:2017年7月14日(周五)10:30

      

       报告地点:逸夫楼408会议室校学术会议中心第三会议室

      

        报告摘要:

       Abstract: HTTP adaptive streaming (HAS) is being adopted with increasing frequency and becoming the de-facto standard for video streaming. However, the client-driven, on-off adaptation behavior of HAS results in uneven bandwidth competition and it is exacerbated when a large number of clients share the same bottleneck network link and compete for the available bandwidth. With HAS each client independently strives to maximize its individual share of the available bandwidth, which leads to bandwidth competition and a decrease in end-user quality of experience (QoE). The competition causes scalability issues, which are quality instability, unfair bandwidth sharing and network resource underutilization. In this talk I will present our proposal of a new software defined networking (SDN) based dynamic resource allocation and management architecture for HAS systems, which aims to alleviate these scalability issues and improve the per-client QoE.


 

       报告人简介:
       Roger Zimmermann is an associate professor with the Computer Science Department at the National University of Singapore (NUS). He is also a deputy director with the Smart Systems Institute (SSI) at NUS and was recently the co-director of the Centre of Social Media Innovations for Communities (COSMIC), a research institute funded by the Media Development Authority (MDA) of Singapore. Prior to joining NUS he held the position of Research Area Director with the Integrated Media Systems Center (IMSC) at the University of Southern California (USC). Among his research interests are mobile video management, streaming media architectures, distributed systems, spatio-temporal data management and location-based services. He has co-authored seven patents and more than two-hundred peer-reviewed articles in the aforementioned areas. He is on the editorial boards of the IEEE Multimedia Communications Technical Committee (MMTC) R-Letter and the Springer International Journal of Multimedia Tools and Applications (MTAP). Additionally, he is an associate editor for the ACM Transactions on Multimedia Computing, Communications and Applications journal (TOMM) and he is currently serving as the secretary of ACM SIGSPATIAL. He has served on the conference program committees of many leading conferences and as reviewer of many journals. He received his Ph.D. and M.S. degrees from USC. He is a Senior Member of the IEEE and a member of ACM.
       Further details can be found on his website at http://www.comp.nus.edu.sg/~rogerz. 

计算机与信息学院

 

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