(LTE is the primary pillar network for the successful development of the mobile Internet. Today, LTE includes two modes of FDD and TDD, and has become the mainstream direction of the global mobile communication industry, and constitutes the world's largest industrial chain. Because the TDD technology provides the dynamic speed of the upper and lower types, it is very beneficial to the use of the mobile Internet. It can be said that TD-SCDMA is a technology born for the mobile Internet.)