Rights statement: This is the author’s version of a work that was accepted for publication in Computer Communications. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computer Communications 69, 2015 DOI: 10.1016/j.comcom.2015.06.015
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Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Using software defined networking to enhance the delivery of video-on-demand
AU - Georgopoulos, Panagiotis
AU - Broadbent, Matthew
AU - Farshad, Arsham
AU - Plattner, Bernhard
AU - Race, Nicholas
N1 - This is the author’s version of a work that was accepted for publication in Computer Communications. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computer Communications 69, 2015 DOI: 10.1016/j.comcom.2015.06.015
PY - 2015/9/15
Y1 - 2015/9/15
N2 - High quality online video streaming, both live and on-demand, has become an essential part of many consumers’ lives. The popularity of video streaming, however, places a burden on the underlying network infrastructure. This is because it needs to be capable of delivering significant amounts of data in a time-critical manner to users. 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 that only serve to exacerbate the burden placed upon the network. In this paper 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 technology 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 bitrate video to demonstrate that with the use of OpenCache, streaming applications play back higher quality video and experience increased throughput, higher bitrate, and shorter start up and buffering times.
AB - High quality online video streaming, both live and on-demand, has become an essential part of many consumers’ lives. The popularity of video streaming, however, places a burden on the underlying network infrastructure. This is because it needs to be capable of delivering significant amounts of data in a time-critical manner to users. 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 that only serve to exacerbate the burden placed upon the network. In this paper 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 technology 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 bitrate video to demonstrate that with the use of OpenCache, streaming applications play back higher quality video and experience increased throughput, higher bitrate, and shorter start up and buffering times.
KW - Video-on-Demand (VoD)
KW - Caching
KW - Quality of Experience (QoE)
KW - Software Defined Networking (SDN)
KW - OpenCache
U2 - 10.1016/j.comcom.2015.06.015
DO - 10.1016/j.comcom.2015.06.015
M3 - Journal article
VL - 69
SP - 79
EP - 87
JO - Computer Communications
JF - Computer Communications
SN - 0140-3664
ER -