Cache as a service:leveraging SDN to efficiently and transparently support Video-on-Demand on the last mile

Georgopoulos, Panagiotis and Broadbent, Matthew and Plattner, Bernhard and Race, Nicholas (2014) Cache as a service:leveraging SDN to efficiently and transparently support Video-on-Demand on the last mile. In: 23rd International Conference on Computer Communications and Networks (ICCCN 2014). IEEE, CHN, pp. 1-9.

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Abstract

High quality online video streaming, both live and on-demand, has become an essential part of consumers’ every-day lives. The popularity of video streaming as placed a heavy burden on the network infrastructure that now has to transfer an enormous amount of data very quickly to the end-user. To further exacerbate the situation, the Video-on-Demand (VoD) distribution paradigm uses a unicast independent flow for each user request. This results in multiple duplicate flows carrying the same video assets many times end-to-end. We present OpenCache: a highly configurable, efficient and transparent in-network caching service that aims to improve the VoD distribution efficiency by caching video assets as close to the end-user as possible. OpenCache leverages Software Defined Networking to benefit last mile environments by improving network utilisation and increasing the Quality of Experience for the end-user. Our evaluation on a pan-European OpenFlow testbed uses adaptive video streaming and demonstrates that with the use of OpenCache, the external link utilisation is reduced by 100%. Furthermore the streaming application receives better quality video and observes higher throughput, lower latency and shorter start up and buffering times.

Item Type:
Contribution in Book/Report/Proceedings
Subjects:
ID Code:
70555
Deposited By:
Deposited On:
27 Aug 2014 12:38
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Sep 2020 06:02