Reduction of energy consumption of Video-on-Demand services using cache size optimization

Author

Osman, Niemah I. ; El-Gorashi, Taisir ; Elmirghani, Jaafar M H

Author_Institution

Sch. of Electron. & Electr. Eng., Univ. of Leeds, Leeds, UK

fYear

2011

fDate

24-26 May 2011

Firstpage

1

Lastpage

5

Abstract

Due to its high traffic demand, Video-on-Demand (VoD) is an energy consuming service. Traffic can be reduced by the deployment of caches where the most popular content is stored closer to clients. In this paper, we evaluate the energy consumption of a cache-based VoD service over an IP over WDM network. We develop a Mixed Integer Linear Programming (MILP) model to optimize the cache size for each node in the network at different times of the day. We consider two traffic scenarios with different downlink and uplink ratios. Our results reveal that, using the optimal cache size can reduce the energy consumption by up to 42%.

Keywords

integer programming; linear programming; telecommunication traffic; video on demand; IP network; WDM network; cache size optimization; cache-based VoD service; downlink ratios; energy consumption reduction; mixed integer linear programming model; traffic scenarios; uplink ratios; video-on-demand services; Energy consumption; IP networks; Multimedia communication; Power demand; Servers; Streaming media; WDM networks; Caching; Energy efficiency; Hit ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Optical Communications Networks (WOCN), 2011 Eighth International Conference on

Conference_Location

Paris

ISSN

Pending

Print_ISBN

978-1-4577-0262-4

Type

conf

DOI

10.1109/WOCN.2011.5872923

Filename

5872923