Smoothly watch high-definition movies on Internet TV; download movies at an average speed of 5MB / sec; swipe Weibo and play games no longer have to worry about the slow speed of the network; just bring a 4G high-speed gateway (CPE) and you can achieve it anytime One network for multiple uses ... As the first users to experience China Mobile's TD-LTE (commonly known as 4G), there are two points of experience: one is fast and the other is convenient.
What does 4G high-speed network bring?
Approaching the emergency command center of the Urban Management Bureau of Jianggan District, Hangzhou, the TV wall composed of 12 small screens and 1 large screen made people feel that they walked into the studio. The difference is that what is being staged here is not a news program or a TV series, but a real-time high-definition picture of Jianggan District transmitted by 15 mobile law enforcement vehicles and 3 fixed monitoring probes via Hangzhou Mobile 4G signal transmission.
"4G high-definition video surveillance not only transmits real-time images, but the images are still clear after random enlargement, which greatly improves the efficiency of urban management work." Comprehensive science and technology Yangtze River Lihua told reporters that the system has been using surveillance images for two months after the system was commissioned. Handled more than 100 illegal cases of various types, the occurrence rate of slag dumping in the jurisdiction was reduced by 35%, and the resolution rate was 18%.
"Compared with 3G, the biggest change in 4G is a significant increase in network speed." Li Tiefeng of the Shenzhen Mobile Network Department told reporters that from a technical point of view, the theoretical peak rate of 4G network can reach 100MB / sec, which can be stable in a laboratory environment. 60MB / sec, the actual measured rate of home users is about 5MB / sec; while the highest theoretical peak value of 3G enhanced technology HSPA + is 21 MB / sec, the average 3G Internet access rate is only 1MB-1.5MB / sec, and the measured rate of home users is lower.
At the Shenzhen China Mobile Smart City R & D and Business Innovation Center, the reporter saw the real-time 4G network rate displayed on the test computer at 56.9 MB / sec. In the application experience area, the staff opened 4 windows on one computer and played 4 high-definition movies at the same time. The video was still smooth and clear. In the past, only one standard-definition video was broadcast on the 3G network. Occasionally, there was a "stuck" phenomenon. In the high-definition video conference display area of ​​the 4G network, users are sitting in the same conference room even if they are thousands of miles apart, and they can even look directly at each other's eyes with subtle expressions at a glance.
"Mobile Internet applications and even the positioning of operators will change in the 4G era." Cen Shuwei, director of the Planning and Technology Office of the Hangzhou Mobile Network Department, said that at present Weibo can only upload text and images, and 4G will make it possible for Weibo to publish videos. In addition, MBMS, which supports multimedia broadcast and multicast services, will help operators develop multiple commercial applications such as multimedia advertising, free and pay TV channels.
What core applications will 4G spawn?
Before and after 3G licensing, mobile operators once talked about the various disruptive applications brought to consumers by the 3G era. 4 years later, the mobile Internet is indeed subconsciously changing people's lives. However, if consumers are allowed to enumerate the core 3G applications they often use, I am afraid that there are still some inconsistencies with the original operator's plan.
Indeed, the 3G network speed increase is not enough to support large data volume wireless applications. Li Tiefeng explained that in the 3G era, mobile operators had planned to focus on video calling, video on demand, video surveillance and other applications. However, due to bandwidth limitations, poor video resolution, jamming, and long buffer time ... directly affect the user experience, and market acceptance is also greatly reduced.
"The above situation will be completely changed in the 4G era." Li Tiefeng said that applications based on high-definition video will be expected to become one of the core services of 4G, especially high-definition video calls. If the charges are reasonable, it will be expected to become the main business of smartphone users. . In addition, 4G high-definition video applications have also received great attention from government and enterprise users. Li Tiefeng said that in addition to Shenzhen TV station ’s interest in the “shot and shoot†application, public security and traffic police departments are also negotiating with Shenzhen Mobile on cooperation in the field of high-definition video surveillance. In addition, the mobile video conferencing system to be launched by Shenzhen Mobile has also been well received by test companies.
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