Abstract: To mitigate the influence of inter-cell interference and load imbalance on the quality of service (QoS) during the movement of users in ultra-dense network, this paper invesitgate a proactive handover strategy for load balancing. We design a mobile handover strategy based on dual thresholds, including a intra-cell handover that dividing cell center users and cell edge users and a inter-cell handover. The optimized intra-cell handover threshold can minimize the total system resource consumption for the given real-time traffic requrements. The designed inter-cell handover threshold can improve the QoS of mobile users and balance the network load. By predicting the large-scale channel information of users in the future, designing an active dual-threshold handover strategy can effectively reduce the handover delay. The simulation results show that compared with existing handover methods, the proposed proactive handover strategy can effectively reduce the outage probability, reduce the number of user handovers, improve user experience, and reduce system resource consumption.