In view of the rapid growth of 4G users and VoLTE users and the rapid promotion of indoor mobile services

especially the high demand for data services such as video

hand traveland network live broadcast

the problem of indoor depth coverage has become an important link for major operators to build high-quality network

seize the market and create economic benefits. The new digitaldistribution system

compared with the traditionalDAS system

has the ability to absorb the traffic

organize the network quickly and quickly

and can achieve the effect of fullmonitoring

high positioning

high capacity

easy coordination and multi-mode coverage in the target area. It is the choice of the indoor depth coverage in the LTE network and the 5G indoor network. The inevitable trend of coverage.