Screen-off traffic characterization and optimization in 3G/4G networks

Junxian Huang, Feng Qian, Z. Morley Mao, Subhabrata Sen, Oliver Spatscheck

Research output: Chapter in Book/Report/Conference proceedingConference contribution

57 Scopus citations

Abstract

Today's cellular systems operate under diverse resource constraints: limited frequency spectrum, network processing capability, and handset battery life. We consider a novel and important factor, handset screen status, i.e., whether the screen is on or off, which was ignored by previous approaches for optimizing cellular resource utilization. Based on analyzing real smartphone traffic collected from 20 users over five months, we find that off-screen traffic accounts for 58.5% of the total radio energy consumption although their traffic volume contribution is much smaller. Such unexpected results are attributed to the unique cellular resource management policy that is not well understood by developers, leading to cellular-unfriendly mobile apps. We then make a further step by proposing screen-aware optimization, by leveraging the key observation that screen-off traffic is much more delay-tolerant than its screen-on counterpart due to a lack of user interaction. Our proposal can better balance the key tradeoffs in cellular networks. It saves up to 60.92% of the network energy and reduces signaling and delay overhead by 25.33% and 30.59%, respectively.

Original languageEnglish (US)
Title of host publicationIMC 2012 - Proceedings of the ACM Internet Measurement Conference
Pages357-363
Number of pages7
DOIs
StatePublished - Dec 17 2012
Externally publishedYes
Event2012 ACM Internet Measurement Conference, IMC 2012 - Boston, MA, United States
Duration: Nov 14 2012Nov 16 2012

Other

Other2012 ACM Internet Measurement Conference, IMC 2012
CountryUnited States
CityBoston, MA
Period11/14/1211/16/12

Keywords

  • batching
  • cellular network
  • fast dormancy
  • lte
  • radio resource optimization
  • screen-off traffic
  • traffic optimization

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