5G系统多目标优化小区预切换方法

为了减少5G蜂窝网络中不必要的小区切换次数并提高用户平均吞吐量，提出了一种基于熵权的多目标优化小区预切换方案。多目标优化法将下行链路信干噪比、时延、预测驻留时间和小区可用资源作为切换指标，引入向量归一化技术并使用不同的方法处理有益指标与非有益指标，分析并预测最优目标切换小区从而达到预切换目的。与现有的切换方法比较，所提方案降低了排名异常的概率，在提高用户平均吞吐量的同时极大地减少了不必要的切换。

A multi-objective optimization cell pre-handover method for 5G system

In order to reduce unnecessary cell handover times and improve average throughput of users in 5G cellular networks,a multi-objective optimization cell pre-handover scheme based on entropy-weighted is proposed.Multi-objective optimization method takes downlink signal-to-interference-plus-noise ratio,delay,predicted resident time and available cell resources as handover indexes,introduces vector normalization technique,and uses different methods to deal with beneficial and non-beneficial indexes,analyzes and predicts the optimal target handover cell to achieve the purpose of pre-handover.Compared with the existing handover methods,the proposed scheme reduces the probability of abnormal ranking,improves the average throughput of users,and reduces the number of cell handover.