Energy-Eicient Mobile Network I/O Optimization at the Application Layer Kemal Guner*, MD S Q Zulkar Nine*, Tevk Kosar*, M. Fatih Bulut‡ * University at Bualo (SUNY) ‡IBM Thomas J. Watson Research Center {kemalgne, mdsqzulk, tkosar}@bualo.edu,
[email protected] ABSTRACT Limited battery power is becoming an increasingly crit- Mobile data trac (cellular + WiFi) will exceed PC Internet ical problem for smartphones and mobile computing, and trac by 2020. As the number of smartphone users and the many techniques have been proposed in the literature to amount of data transferred per smartphone grow exponen- overcome this at dierent layers. At the physical layer, tech- tially, limited battery power is becoming an increasingly niques were proposed to choose appropriate modulation, critical problem for mobile devices which depend on the coding, and transmission power control schemes to improve network I/O. Despite the growing body of research in power energy eciency of the mobile device [17, 19, 52, 54, 58]. At management techniques for the mobile devices at the hard- the media access control (MAC) layer, several new energy- ware layer as well as the lower layers of the networking stack, ecient MAC protocol designs were proposed [13, 39, 39, there has been little work focusing on saving energy at the 46, 63, 64, 67]. At the network layer, low-power and scal- application layer for the mobile systems during network I/O. able routing algorithms were developed [16, 53, 55, 59, 66]. In this paper, to the best of our knowledge, we are rst to pro- At the transport layer, trac shaping techniques [5] and vide an in-depth analysis of the eects of application-layer new transport protocols [5, 15, 24, 40, 77] were proposed to data transfer protocol parameters on the energy consump- exploit application-specic information and reduce power tion of mobile phones.