Some thoughts on the transformation of information and communication technologies
Hequan Wu · 2011
In the beginning of the second decade of this century, the demand on broadband, mobile and ubiquitous application continues to increase. The proportion of number of 3G subscribers to total mobile subscribers is 7.5% up to April 2011, and 49.5% in new increased mobile subscribers during Jan to Apr 2011 in China. Global mobile data traffic in 2010 (237 PB/month) was over three times greater than the total global Internet traffic in 2000 (75 PB/month). Global mobile data traffic first exceeded voice in December 2009 and 1.5 times voice in Q2'2010. Internet of Things and ubiquitous network applications will also aggravate demand on bandwidth. For example, During the Shanghai World Expo 2010, 10,000 security cameras were installed on buses, trucks, and emergency vehicles. When live monitoring is needed, video is transmitted over the mobile network at 2 frames per second. If each frame is 0.5 MB, then an hour of this video generates 3.6 GB. If half of these vehicles transmitted 2 minutes of video over the course of a day, this would generate 18 Peta-bytes of mobile data traffic of a month, more that total global mobile data traffic in 2007.