一种面向可信WLAN和5G异构网络的垂直切换算法  

A Vertical Handover Algorithm for Trusted WLAN and 5G Heterogeneous Networks

作　　者：赵洋 管荑 赵晓红 任天成 王文婷 ZHAO Yang;GUAN Ti;ZHAO Xiaohong;REN Tiancheng;WANG Wenting(State Grid Shandong Electric Power Research Institute,Jinan 250003,China;State Grid Shandong Electric Power Company,Jinan 250001,China)

机构地区：[1]国网山东省电力公司电力科学研究院,山东济南250003 [2]国网山东省电力公司,山东济南250001

出　　处：《山东电力技术》2024年第9期57-64,共8页Shandong Electric Power

基　　金：国网山东省电力公司科技项目“智能电网5G安全接入及数据可信共享关键技术研究课题2:智能电网中的5G通信与可信WLAN技术融合应用研究”(520626220017)。

摘　　要：针对电力物联网中移动终端在异构网络中的垂直切换问题,传统基于信号强度的切换方法无法确保网络吞吐量、丢包率、延迟方面的最佳性能指标。为解决这一问题,提出一种基于数据驱动的电力物联网异构网络垂直切换算法。首先以长短时记忆网络(longshort-termmemory,LSTM)算法为基础,构建异构网络效能函数权重预测模型,模型训练及测试数据来自异构网络公开数据集及真实移动通信测量结果;随后效能函数权重预测模型输出异构网络效能函数权重参数,计算同一时刻各异构网络的效能值;采用排序方法选择效能值最大的网络作为切换目标网络执行网络切换。仿真结果显示,与相关算法相比,所提算法预测得到的属性权重能更好体现各网络特征对网络整体效用函数的影响,有效解决移动用户异构网络垂直切换有感问题。Regarding the vertical handover problem of mobile terminals in heterogeneous networks of Power Internet of Things,traditional signal strength-based handover methods cannot ensure the best performance in terms of network throughput,packet loss,and latency.To address this problem,a data-driven vertical handover algorithm for heterogeneous network of Power Internet of Things is proposed.Firstly,a weight prediction model of network efficiency function for heterogeneous network is constructed based on the long short-term memory(LSTM)model.The model training and testing data are obtained from the public dataset of heterogeneous networks and the measurement results of real mobile communication.Subsequently,the weight prediction model of network efficiency function outputs the weight parameters of the heterogeneous network efficiency function to calculate the efficiency value of each heterogeneous network at the same time.Using a sorting method,the network with the highest efficiency value is selected as the target network to perform network handover.The simulation results show that,compared with related works,the attribute weights predicted by the proposed algorithm can better reflect the influence of each network feature on the overall utility function of the network,and effectively solve the perception problem of mobile users in vertical handover in heterogeneous networks.

关 键 词：异构网络 垂直切换 LSTM 无线通信技术 

分 类 号：TN929.5[电子电信—通信与信息系统]