| 摘要: |
| 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。 |
| 关键词: 5G蜂窝网络 小区预切换 熵权法 多目标优化法 |
| DOI：10.20079/j.issn.1001-893x.211225004 |
|
| 基金项目:教育部-中国移动科研基金(MCM201805-2) |
|
| A multi-objective optimization cell pre-handover method for 5G system |
| LEI Fang,LI Xinchao,ZHANG Hang,HAN Caijun |
| (School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China) |
| Abstract: |
| 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. |
| Key words: 5G cellular network cell pre-handover entropy-weighted method multi-objective optimization method |
