C-V2X或LTE-V作为车联网(Vehicular Communication Networks, VCN)领域的新兴通信技术,能够有效提高道路安全和交通通信效率。在3GPP发布的R14标准中,引入不依赖于任何蜂窝基础设施的直连通信模式4,在模式4中车辆自主选择和管理其无线...C-V2X或LTE-V作为车联网(Vehicular Communication Networks, VCN)领域的新兴通信技术,能够有效提高道路安全和交通通信效率。在3GPP发布的R14标准中,引入不依赖于任何蜂窝基础设施的直连通信模式4,在模式4中车辆自主选择和管理其无线电资源。在不结合实际的交通场景的情况下对C-V2X模式4通信性能进行评估,提出了一种多信道传播模型下C-V2X模式4通信性能分析模型,验证了不同传输参数以及不同信号传播信道对性能的影响,试图设计更为完备的分析模型,探索参数的影响并调整参数来进一步提升C-V2X模式4通信性能的可能性。展开更多
As one of the most promising communication technologies for vehicular networks, LTE-V has the advantages of wide coverage and a high transmission rate. 3 GPP released the technical specification of LTE-V in March 2017...As one of the most promising communication technologies for vehicular networks, LTE-V has the advantages of wide coverage and a high transmission rate. 3 GPP released the technical specification of LTE-V in March 2017, launching a spate of related research and industrialization. In this paper, we propose a communication model based on Markov process to evaluate the reliability of LTE-V. We derived the Packet Delivery Rate(PDR) of LTE-V based on the model. Moreover, we use Poisson process to model the distribution of vehicles on a highway,then combine the communication model with the vehicles’ distribution to derive the PDR under this scenario. To verify the correctness of the proposed model, we established a simulation program on the MATLAB platform. By comparing the simulation results and the mathematical results, we found that simulation results are a very good fit for the model.展开更多
在基于LTE-V(Long Term Evolution-Vehicle)通信系统下的车与车通信(Vehicle to Vehicle,V2V)广播中,道路上的车辆将周期性广播合作意识消息给邻居车辆以便改善道路安全.针对高密度的交通环境下资源选择碰撞问题,分析资源块和用户干扰...在基于LTE-V(Long Term Evolution-Vehicle)通信系统下的车与车通信(Vehicle to Vehicle,V2V)广播中,道路上的车辆将周期性广播合作意识消息给邻居车辆以便改善道路安全.针对高密度的交通环境下资源选择碰撞问题,分析资源块和用户干扰之间的关系.以提高数据包传输可靠性为目标,提出基于SA解码的V2 V自主资源选择算法.车辆通过接收周围一跳邻居的SA和数据包资源预留构建资源占用映射图并分别嵌入到SA和数据包中并广播给周围一跳邻居,从而使邻居车辆获取两跳邻居的预留资源,以减少隐藏终端带来的干扰,之后通过对资源池的划分减少合并冲突带来的干扰.研究表明,该算法可以有效提高数据包传输的接收率.展开更多
Radio network access technology currently used in 4G/5G is Long Term Evolution-Advanced(LTE-A),which was developed by 3rd Generation Partnership Project(3GPP).Device-to-device(D2D)communication is a technology enablin...Radio network access technology currently used in 4G/5G is Long Term Evolution-Advanced(LTE-A),which was developed by 3rd Generation Partnership Project(3GPP).Device-to-device(D2D)communication is a technology enabling direct communications among wireless devices without forwarding through an evolved Node B(eNB).Moreover,D2D transmission can support vehicles as a vehicle-to-vehicle(V2V)environment.It is possible to avoid accidents via exchanging movement-related information among vehicles and effectively increase driving safety(and efficiency).However,radio resources are limited in radio networks.A vehicle transmits through D2D in Long Term Evolution-Vehicle(LTE-V)mode-3 standard,and an eNB can allocate the same spectrum radio resources for cellular and V2V links simultaneously.When using the same radio resources,the probability of interference may increase.This study designed a semipersistent resource allocation algorithm based on different cycles in an LTE-V network.Moreover,resource allocation under different cycles was analyzed,and a scheme for resource selection is proposed based on cycle size.The proposed Semi Persistent Gain Aware Resource Allocation(SP-GARA)scheme selects resources based on the expected sum rate of the cycle size and analyzes and discusses the results of the total sum rate at different cycles and speeds for an improved performance.展开更多
V2X(Vehicle to Everything)车路协同系统是车联网中实现环境感知、信息交互与协同控制的重要关键技术。文章旨在阐述基于LTE(Long Term Evolution)-V及DSRC(Dedicated Short Range Communication)V2X车路协同系统整体硬件架构设计及软...V2X(Vehicle to Everything)车路协同系统是车联网中实现环境感知、信息交互与协同控制的重要关键技术。文章旨在阐述基于LTE(Long Term Evolution)-V及DSRC(Dedicated Short Range Communication)V2X车路协同系统整体硬件架构设计及软件架构设计方法及详细设计内容,并对系统方案特点进行分析,为V2X车路协同系统整体商业化、5G通信演进奠定基础,为国家制定V2X相关政策法规、企业明确技术战略方向提供参考。展开更多
文摘C-V2X或LTE-V作为车联网(Vehicular Communication Networks, VCN)领域的新兴通信技术,能够有效提高道路安全和交通通信效率。在3GPP发布的R14标准中,引入不依赖于任何蜂窝基础设施的直连通信模式4,在模式4中车辆自主选择和管理其无线电资源。在不结合实际的交通场景的情况下对C-V2X模式4通信性能进行评估,提出了一种多信道传播模型下C-V2X模式4通信性能分析模型,验证了不同传输参数以及不同信号传播信道对性能的影响,试图设计更为完备的分析模型,探索参数的影响并调整参数来进一步提升C-V2X模式4通信性能的可能性。
基金supported in part by the National Key Research and Development Program of China (No. 2018YFB1600600)the National Natural Science Foundation of China (No. 61673233)
文摘As one of the most promising communication technologies for vehicular networks, LTE-V has the advantages of wide coverage and a high transmission rate. 3 GPP released the technical specification of LTE-V in March 2017, launching a spate of related research and industrialization. In this paper, we propose a communication model based on Markov process to evaluate the reliability of LTE-V. We derived the Packet Delivery Rate(PDR) of LTE-V based on the model. Moreover, we use Poisson process to model the distribution of vehicles on a highway,then combine the communication model with the vehicles’ distribution to derive the PDR under this scenario. To verify the correctness of the proposed model, we established a simulation program on the MATLAB platform. By comparing the simulation results and the mathematical results, we found that simulation results are a very good fit for the model.
文摘在基于LTE-V(Long Term Evolution-Vehicle)通信系统下的车与车通信(Vehicle to Vehicle,V2V)广播中,道路上的车辆将周期性广播合作意识消息给邻居车辆以便改善道路安全.针对高密度的交通环境下资源选择碰撞问题,分析资源块和用户干扰之间的关系.以提高数据包传输可靠性为目标,提出基于SA解码的V2 V自主资源选择算法.车辆通过接收周围一跳邻居的SA和数据包资源预留构建资源占用映射图并分别嵌入到SA和数据包中并广播给周围一跳邻居,从而使邻居车辆获取两跳邻居的预留资源,以减少隐藏终端带来的干扰,之后通过对资源池的划分减少合并冲突带来的干扰.研究表明,该算法可以有效提高数据包传输的接收率.
基金This work was funded in part by the and Research Project of National Taiwan University of Sport,Taiwan,China,under Grant No.110DG00114.
文摘Radio network access technology currently used in 4G/5G is Long Term Evolution-Advanced(LTE-A),which was developed by 3rd Generation Partnership Project(3GPP).Device-to-device(D2D)communication is a technology enabling direct communications among wireless devices without forwarding through an evolved Node B(eNB).Moreover,D2D transmission can support vehicles as a vehicle-to-vehicle(V2V)environment.It is possible to avoid accidents via exchanging movement-related information among vehicles and effectively increase driving safety(and efficiency).However,radio resources are limited in radio networks.A vehicle transmits through D2D in Long Term Evolution-Vehicle(LTE-V)mode-3 standard,and an eNB can allocate the same spectrum radio resources for cellular and V2V links simultaneously.When using the same radio resources,the probability of interference may increase.This study designed a semipersistent resource allocation algorithm based on different cycles in an LTE-V network.Moreover,resource allocation under different cycles was analyzed,and a scheme for resource selection is proposed based on cycle size.The proposed Semi Persistent Gain Aware Resource Allocation(SP-GARA)scheme selects resources based on the expected sum rate of the cycle size and analyzes and discusses the results of the total sum rate at different cycles and speeds for an improved performance.
文摘V2X(Vehicle to Everything)车路协同系统是车联网中实现环境感知、信息交互与协同控制的重要关键技术。文章旨在阐述基于LTE(Long Term Evolution)-V及DSRC(Dedicated Short Range Communication)V2X车路协同系统整体硬件架构设计及软件架构设计方法及详细设计内容,并对系统方案特点进行分析,为V2X车路协同系统整体商业化、5G通信演进奠定基础,为国家制定V2X相关政策法规、企业明确技术战略方向提供参考。
