基于网络分组的切换判决算法  

Handover decision algorithm based on network grouping

作　　者：马彬[1,2] 徐梅 谢显中[2] MA Bin;XU Mei;XIE Xianzhong(School of Computer Science and Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,P.R.China;Chongqing Key Laboratory of Computer Network and Communication Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,P.R.China)

机构地区：[1]重庆邮电大学计算机科学与技术学院,重庆400065 [2]重庆邮电大学重庆市计算机网络与通信技术重点实验室,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2023年第4期625-635,共11页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：重庆市研究生科研创新项目(CYS21305);重庆市教委科学技术研究重大项目(KJZD-M201900602);重庆市教委科学技术研究重点项目(KJZD-M201800603)。

摘　　要：针对大量终端并发切换引起的网络负载不均和网络相似性利用不足的问题,提出一种基于网络分组的切换判决算法。将采集和初始化后的网络参数输入至网络分组模型,利用网络性能的相似性得到网络组;根据终端的偏好类型,基于烟花算法选择目标网络组;求解终端的可接入网络集和目标网络组的交集,得到其候选网络集,从中选择性能因子最大的网络作为目标网络执行切换,动态更新网络组。仿真结果表明,该算法能够在均衡网络负载的前提下,降低切换阻塞率,提高系统吞吐量,提升终端的服务质量。In urban commercial areas covered by dense heterogeneous wireless networks,to address the problems of uneven network load caused by concurrent handover of large number of terminals and insufficient use of network similarity,we propose a handover decision algorithm based on network grouping.First,the collected and initialized network parameters are input into the network grouping model,and the similarity of network performance is used to obtain the network group.Secondly,the target network group is selected based on the firework algorithm according to the preference type of the terminal.Thirdly,the intersection of the terminal accessible network set and the target network group is solved to obtain its candidate network set,from which the network with the largest performance factor is selected as the target network to perform handover,and the network group is dynamically updated.Finally,the analysis of the simulation results shows that the algorithm can reduce the handover blocking rate,increase the system throughput,and improve the quality of terminal service under the premise of balancing the network load.

关 键 词：并发切换 网络相似性 网络分组 垂直切换 负载均衡 

分 类 号：TN915[电子电信—通信与信息系统]