基于云计算的下一代铁路移动通信网络架构

Next Generation Railway Mobile Communication Network Architecture Based on Cloud Computing

铁路智能化的发展以及铁路网与互联网的不断融合,对下一代铁路移动通信网络的承载能力和服务质量提出更高的要求。基于云计算的下一代铁路移动通信网络架构并针对铁路应用特点,论述该架构的技术优势和面临的挑战;在分析未来铁路移动通信应用需求的基础上,提出基于集中单元、分布单元和射频拉远单元三层结构的铁路无线接入网络部署方案以及基于移动中继节点的车载移动终端无线访问方案;给出下一代铁路移动通信网络的演进路线。基于云计算的铁路移动通信网络架构可以有效地降低建设及维护成本、提高资源的利用效率、降低能耗,符合铁路未来的发展趋势。

The development of railway intelligence and the integration of railway network with internet have put forward higher requirements for the carrying capacity and service quality of the next generation railway mobile communication network.Firstly,this paper proposes the network architecture based on cloud computing and analyzes the technical advantages and challenges faced by this architecture according to the characteristics of railway applications.Then,based on the analysis of the requirements of the future railway mobile communication,a three-layer radio access network deployment scheme with centralized units,distribution units and radio remote units is proposed,and an onboard mobile terminal wireless access scheme with mobile relay nodes is recommended.Finally,the evolution route of the next generation railway mobile communication network is given.The cloud-based railway mobile communication network can effectively reduce construction and maintenance costs,improve resource utilization efficiency,reduce energy consumption,and adapt to the future development trend of the railway.