TD-LTE adopts same-frequency networking technology

so the signal of the adjacent cell which uses same frequency is interference to the serving cell. With the increase of 4G network scale and user volume

the problem of intra-system interference is becoming increasingly serious

which has a very negative impact on the quality of VoLTE and data service of TD-LTE system. In this paper

the intra-system interference of TD-LTE is studied systematically

four strong intra-system interference scenarios are proposed and corresponding collaborative optimization schemes are given

in the optimization schemes

the network coverage

capacity and other issues are also considered.