The PCI interference in LTE systems will cause access

handover

and quality of service issues

which seriously affect user perception.We propose a method of constructing an integrated neighbor’s interference matrix based on DT data

handover data

and the whole amount of MR data

and an intelligent genetic algorithm is introduced to iterative compute the optimal PSS allocation.The data of the current network show that this method greatly improves the operation effi ciency of the system and effectively reduces the PCI interference in the system.