4G is the abbreviation of fourth-generation mobile communication technology. Among them, TD-LTE is one of the new generation wireless broadband communication standards with high bandwidth and high quality, featuring high speed, low latency and internationalization.

Compared with 3G, the characteristics of LTE can be summarized by "more", "faster", "better" and "save". summarize.

Multiple services: LTE not only supports voice, SMS and MMS under 2G/3G network, but also supports high-bandwidth real-time services such as high-definition video conferencing, real-time video monitoring and video scheduling.

Internet speed "fast": LTE peak rate can reach more than 100 megabytes, more than 5 times the current 3G speed.

User perception is "good": LTE network latency is lower than half of 3G network, which is especially good for online games, real-time video transmission and other real-time services.

Spectrum resources "save": compared with 3G, in the network bandwidth, LTE can use 1.4, 3, 5, 10, 15, 20Mhz six frequency bandwidth for networking, spectrum utilization is higher than the 3G, can make better use of the current very valuable frequency resources.