摘要
低轨卫星与智能汽车的快速发展推动了车载卫星通信成为6G网络的关键组成。智能汽车在功率和天线部署方面具有优势,但毫米波频段在极端天气下易衰减,现有切换算法面向低速终端且缺乏毫米波链路建模,难以适应车联网环境。为此,提出了一种结合信号强度、路径损耗与CNR的切换方案,提升链路稳定性与适应性。仿真结果表明,该方案在极端天气下服务时间提升16.9%,吞吐量提升397.2%,验证了其在6G车载通信中的应用潜力。
The rapid development of low Earth orbit satellites and intelligent vehicle technology has driven vehicular satellite communication to become a key component of 6G networks.While intelligent vehicles have advantages in terms of power and antenna deployment,the millimeter-wave frequency band is prone to severe attenuation in extreme weather conditions.Existing handover algorithms are designed for low-speed terminals and lack millimeter-wave link modeling,making them unsuitable for the dynamic environment of vehicular networks.Therefore,this paper proposes a handover scheme that combines signal strength,path loss,and CNR to improve link stability and adaptability.Simulation results show that the proposed scheme increases the service time by 16.9%and throughput by 397.2%under extreme weather conditions,demonstrating its application potential in 6G vehicular communication.
作者
黄昀
有超群
裴旭明
高跃
HUANG Yun;YOU Chaoqun;PEI Xuming;GAO Yue(Institute of Space Internet,Fudan University,Shanghai 200438,China)
出处
《移动通信》
2025年第6期147-152,共6页
Mobile Communications
基金
上海市2024年度“科技创新行动计划”项目(24DP1500400)。
关键词
车载卫星通信
毫米波通信
链路预算
极端天气
卫星切换
vehicular satellite communication,millimeter-wave communication
link budget
extreme weather
satellite handover
