Watts2Share: Energy-Aware Traffic Consolidation
2013 (English)In: Green Computing and Communications (GreenCom), 2013 IEEE and Internet of Things (iThings/CPSCom), IEEE International Conference on and IEEE Cyber, Physical and Social Computing, IEEE Computer Society, 2013, 14-22 p.Conference paper (Refereed)
Energy consumption is becoming the Achilles' heel of the mobile user quality of experience partly due to undisciplined use of the cellular (3G) transmissions by applications. The operator infrastructure is typically configured for peak performance, whereas during periods of underutilisation the handsets pay the price by staying in high energy states even if each application only uses a fraction of the maximum available bandwidth. In this paper we promote a bi-radio scenario where instead of independently using own cellular connections, several users share a single cellular link offered by one member of a coalition (a rotating aggregator). We present Watts2Share, an architecture for energy-aware traffic consolidation whereby group members' data flows transmitted through a second radio (e.g., WiFi) are aggregated by the aggregator and retransmitted through the cellular link. Through careful and repeatable studies we demonstrate that this scheme saves up to 68% of the total transmission energy in handsets compared to a pure 3G scenario. The studies are based on a wide range of real traffic traces and real cellular operator settings, and further illustrate that this scheme reduces the overall energy by reducing the signalling overhead, as well as extending the lifetime of all handsets.
Place, publisher, year, edition, pages
IEEE Computer Society, 2013. 14-22 p.
3G;SoftAP;WiFi;bandwidth sharing;traffic consolidation
Communication Systems Telecommunications
IdentifiersURN: urn:nbn:se:liu:diva-102940DOI: 10.1109/GreenCom-iThings-CPSCom.2013.29ISBN: 978-0-7695-5046-6OAI: oai:DiVA.org:liu-102940DiVA: diva2:684778
IEEE International Conference on Green Computing and Communications (GreenCom), IEEE Internet of Things (iThings/CPSCom), and IEEE Cyber, Physical and Social Computing, 20-23 August 2013, Beijing, China