Energy efficient content delivery in service provider networks with content caching

We study the impact of video on demand content delivery on service provider networks focusing on the interplay between Internet service provider (ISP) owned and over-the-top (OTT) content catalogs. We utilize an Integer Linear Program to show that the delivery of OTT content consumes significantly more energy than ISP content, which can be cached freely in the network. Retrieving OTT content from designated network peering points increases congestion in links surrounding the peering node. We demonstrate how ISPs offering competing VoD services can reduce energy consumption as well as network congestion and improve the quality of service delivery. Finally, we show how a caching arrangement between the ISP and OTT provider that allows the ISP to cache OTT content can also address these concerns.