Evaluation of energy profiles for mobile video prefetching in generalized stochastic access channels
2014 (English)In: Mobile and Ubiquitous Systems: Computing, Networking, and Services: 10th International Conference, MOBIQUITOUS 2013, Tokyo, Japan, December 2-4, 2013, Revised Selected Papers, Springer, 2014, 209-223 p.Conference paper (Refereed)
This paper evaluates the energy cost reduction of Over-The-Top mobile video content prefetching in various network conditions. Energy cost reduction is achieved by reducing the time needed to download content over the radio interface by prefetching data on higher data rates, compared to the standard on demand download. To simulate various network conditions and user behavior, a stochastic access channel model was built and validated using the actual user traces. By changing the model parameters, the energy cost reduction of prefetching in different channel settings was determined, identifying regions in which prefetching is likely to deliver the largest energy gains. The results demonstrate that the largest gains (up to 70%) can be obtained for data rates with strong correlation and low noise variation. Additionally, based on statistical properties of data rates, such as peak-to-mean and average data rate, prefetching strategy can be devised enabling the highest energy cost reduction that can be obtained using the proposed prefetching scheme.
Place, publisher, year, edition, pages
Springer, 2014. 209-223 p.
, Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, ISSN 1867-8211 ; 131
Energy profiles, stochastic access channel, mobile video prefetching
IdentifiersURN: urn:nbn:se:kth:diva-136739DOI: 10.1007/978-3-319-11569-6_17ISI: 000352148200017ScopusID: 2-s2.0-84910601630ISBN: 978-331911568-9OAI: oai:DiVA.org:kth-136739DiVA: diva2:676942
10th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services; Tokyo, Japan, 2–4 December, 2013
ProjectsCOSEM - COnvergent and SEmantic-aware Mobile networks and services
QC 201505122013-12-082013-12-082015-11-13Bibliographically approved