GreenTube: power optimization for mobile videostreaming via dynamic cache management

  • Authors:
  • Xin Li;Mian Dong;Zhan Ma;Felix C.A. Fernandes

  • Affiliations:
  • George Mason University, Fairfax, VA, USA;Samsung Telecommunications America, Richardson, TX, USA;Samsung Telecommunications America, Richardson, TX, USA;Samsung Telecommunications America, Richardson, TX, USA

  • Venue:
  • Proceedings of the 20th ACM international conference on Multimedia
  • Year:
  • 2012

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Abstract

Mobile video streaming has become one of the most popular applications in the trend of smartphone booming and the prevalence of 3G/4G networks, i.e., HSPA, HSPA+, and LTE. However, the prohibitively high power consumption by 3G/4G radios in smartphones reduces battery life significantly and thus severely hurts user experience. To tackle this challenge, we designed GreenTube, a system that optimizes power consumption for mobile video streaming by judiciously scheduling downloading activities to minimize unnecessary active periods of 3G/4G radio. GreenTube achieves this by dynamically managing the downloading cache based on user viewing history and network condition. We implemented GreenTube on Android-based smartphones. Experimental results show that GreenTube achieves large power reductions of more than 70% (on the 3G/4G radio) and 40% (for the whole system). We believe GreenTube is a desirable upgrade to the Android system, especially in the light of increasing LTE popularity.