Previous Works Motivation 上浒充通大￥ The mobility SHANGHAI JIAO TONG UNIVERSITY Everything is going mobile > Currently,more than 70%of Facebook users access the service via a mobile device at least some of the time [2]. > 65%growth in mobile data traffic between Q1 2013 and Q1 2014 I31. 2500 Mobile data traffic in Percent Mobile Users of Facebook as Portion of Q1 2014 exceeded Total User Base total mobile data 2000 traffic in 2011 80,0% 70.0% 65% 60,0% 1500 growth in data traffic 50,0% between Q1 2013 and Q1 2014 40.0% 1.D00 30.0% 20.0% 10.0% 0.0% 10q110q210g310g411g1110211q311c412q112q212q312q413q113q2 02000401 2004 [2]Christopher Penn,"State of Facebook:70%use a mobile device to access Facebook", http://www.shiftcomm.com/2013/07/state-of-facebook-70-use-a-mobile-device-to-access-facebook [3]Ericsson,"Ericsson Mobility Report-June 2014",http://w.ericsson.com/ericsson-mobility-report 6Previous Works & Motivation The mobility ❑ Everything is going mobile ➢ Currently, more than 70% of Facebook users access the service via a mobile device at least some of the time [2]. ➢ 65% growth in mobile data traffic between Q1 2013 and Q1 2014 [3]. 6 [2] Christopher Penn, “State of Facebook: 70% use a mobile device to access Facebook”, http://www.shiftcomm.com/2013/07/state-of-facebook-70-use-a-mobile-device-to-access-facebook [3] Ericsson, “Ericsson Mobility Report-June 2014”, http://www.ericsson.com/ericsson-mobility-report