摘要
考虑车联网节点高速运动导致的频繁切换和通信中断问题,提出了基于移动接入点的车联网模型,在基于移动接入点的协作通信5G无蜂窝车联网方案中,给出了选择车辆担任协作移动接入点的三个简单有效的原则,以构建5G无蜂窝移动接入网络.仿真实验比较了不同移动接入点选择方法下移动接入点的空间特性分布以及系统的连通性,并给出不同要求下的最佳方案.理论分析和仿真结果表明:采用基于距离的移动接入点选择算法,相比简单的随机移动接入点选择方法,提高了车联网的连通性,而基于顺序的移动接入点选择算法则能提供最好的负载均衡特性.
Considering frequent handovers and communication outages caused by the high-speed movement of vehicle nodes,three simple and practical principles were given for selecting vehicles as moving access points(APs) to construct 5G cell-less mobile access networks.Distribution of moving APs,and connectivity and load balancing of networks between different moving AP selection methods were analyzed and compared in the simulation. Simulation results indicate that the distance based moving AP selection algorithm improves connectivity of the vehicular networks compared to the simple random moving AP selection method,while the sequence-based moving AP selection method provides the best load balancing performance.
作者
王丽君
颜佳
韩涛
邓德祥
WANG Lijun;YAN Jia;HAN Tao;DENG Dexiang(School of Electronic Information,Wuhan University,Wuhan 430072,China;Faculty of Information Science and Technology,Wenhua College,Wuhan 430074,China;School of Electronic Information and Communications,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2019年第6期41-45,68,共6页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(61471180)
关键词
车联网
协作通信
移动接入点
连通性
负载均衡
vehicular networks
cooperative communications
moving access point
connectivity
load balancing
