 |
|
|||
| Authors: | Panagiotis Georgopoulos, Matthew Broadbent, Bernhard Plattner, Nicholas Race |
| Group: | Communication Systems |
| Type: | Misc |
| Title: | Cache as a Service: Leveraging SDN to Efficiently and Transparently Support Video-on-Demand on the Last Mile |
| Year: | 2014 |
| Month: | August |
| Keywords: | Software Defined Networking, OpenFlow, Video-on-Demand, OpenCache |
| 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. |
| Remarks: | Invited poster as top 1% paper |
| Howpublished: | 23rd International Conference on Computer Communications and Networks (ICCCN 2014) |
| Resources: | [BibTeX] [Paper as PDF] |
