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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 26 — Dec. 12, 2011
  • pp: B260–B269

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

Chien Aun Chan, Elaine Wong, Ampalavanapillai Nirmalathas, André F. Gygax, and Christopher Leckie  »View Author Affiliations

Optics Express, Vol. 19, Issue 26, pp. B260-B269 (2011)

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Energy-efficient video distribution systems have become an important tool to deal with the rapid growth in Internet video traffic and to maintain the environmental sustainability of the Internet. Due to the limitations in terms of energy-efficiency of the conventional server centric method for delivering video services to the end users, storing video contents closer to the end users could potentially achieve significant improvements in energy-efficiency. Because of dissimilarities in user behavior and limited cache sizes, caching systems should be designed according to the behavior of user communities. In this paper, several energy consumption models are presented to evaluate the energy savings of single-level caching and multi-level caching systems that support varying levels of similarity in user behavior. The results show that single level caching systems can achieve high energy savings for communities with high similarity in user behavior. In contrast, when user behavior is dissimilar, multi-level caching systems should be used to increase the energy efficiency.

© 2011 OSA

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4256) Fiber optics and optical communications : Networks, network optimization

ToC Category:
Backbone and Core Networks

Original Manuscript: September 30, 2011
Manuscript Accepted: November 1, 2011
Published: November 18, 2011

Virtual Issues
European Conference on Optical Communication 2011 (2011) Optics Express

Chien Aun Chan, Elaine Wong, Ampalavanapillai Nirmalathas, André F. Gygax, and Christopher Leckie, "Energy efficiency of on-demand video caching systems and user behavior," Opt. Express 19, B260-B269 (2011)

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