Abstract

The energy consumption of the Internet is anticipated to be one of the main contributors to global energy consumption in the coming decades. As a result, renewed attention has been given to the energy efficient design and operation of network services. The video on demand (VoD) service is expected to be one of the most prominent services through the Internet in the near future. Due to the enormous energy consumption arising from storage and transport of movies, energy efficient design and operation of VoD systems are important considerations. In this paper, we formulate energy consumption models to analyze the energy consumption arising from storage and transport of movies in VoD systems. We consider five strategic content placement locations located at different levels of the video distribution network and we comparatively analyze the energy consumption of storage and transport when the movies are stored and delivered from these locations. Moreover, we derive thresholds for movie request arrival rates which determine whether replication of a movie in a given content placement location is energy efficient and whether turning ON a set of content storages located at a particular level of the network is energy efficient. By numerically analyzing the energy consumption models, we show that the energy efficiency of VoD services can be significantly improved by delivering movies from the most energy efficient content placement locations in the network. We show that this can be achieved by designing and operating VoD systems based on our derived thresholds which optimize the energy efficiency of VoD services for all user request arrival rates.

©2011 Optical Society of America

Energy efficiency of on-demand video caching systems and user behavior

Chien Aun Chan, Elaine Wong, Ampalavanapillai Nirmalathas, André F. Gygax, and Christopher Leckie
Opt. Express 19(26) B260-B269 (2011)

Delivery of video-on-demand services using local storages within passive optical networks

Sandu Abeywickrama and Elaine Wong
Opt. Express 21(2) 2083-2096 (2013)

Efficient Video-on-Demand Streaming for Broadband Access Networks

Joonho Choi, Myungsik Yoo, and Biswanath Mukherjee
J. Opt. Commun. Netw. 2(1) 38-50 (2010)

Adopting Hybrid CDN–P2P in IP-Over-WDM Networks: An Energy-Efficiency Perspective

Uttam Mandal, M. Farhan Habib, Shuqiang Zhang, Christoph Lange, Andreas Gladisch, and Biswanath Mukherjee
J. Opt. Commun. Netw. 6(3) 303-314 (2014)

Scalable Architecture for VOD Service Enhancement Based on a Cache Scheme in an Ethernet Passive Optical Network

I-Shyan Hwang, AliAkbar Nikoukar, Chin-Hung Teng, and K. Robert Lai
J. Opt. Commun. Netw. 5(4) 271-282 (2013)