Recently

with the continuous increase in the proportion of users of unlimited packages

the traffic has exploded

which has brought great challenges to the expansion of 4 G. Some superheated areas have already experienced the dilemma of frequency exhaustion and difficulty in establishing stations. Ultradense networking is the main networking mode for high-traffic areas in the future which can provide large capacity and ultra-high speed for dense deployment of various stations. It will become one of the key technologies for the future 5 G. Therefore

it is of great significance to study the application of ultradense networking in 4 G networks and the ultra-dense network evolution technology for 5 G.