How much can large-scale video-on-demand benefit from users' cooperation?

Ciullo, Delia; Martina, Valentina ; Garetto, Michele ; Leonardi, Emilio
IEEE/ACM Transactions on Networking, Vol 23, N°6, December 2015

We propose an analytical framework to tightly characterize the scaling laws for the additional bandwidth that servers must supply to guarantee perfect service in peer-assisted Video-on-Demand systems, taking into account essential aspects such as peer churn, bandwidth heterogeneity, and Zipf-like video popularity. Our results reveal that the catalog size and the content popularity distribution have a huge effect on the system performance. We show that users' cooperation can effectively reduce the servers' burden for a wide range of system parameters, confirming to be an attractive solution to limit the costs incurred by content providers as the system scales to large populations of users.


DOI
Type:
Journal
Date:
2015-12-15
Department:
Systèmes de Communication
Eurecom Ref:
4787
Copyright:
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