This paper analyzes the communication business needs and application characteristics based on China's railway operation scenarios.Focusing on the specific needs of railways,the 5G-Railway(5G-R)system adds railway-...This paper analyzes the communication business needs and application characteristics based on China's railway operation scenarios.Focusing on the specific needs of railways,the 5G-Railway(5G-R)system adds railway-specific functional network elements on the basis of general architecture.In terms of system networking,it focuses on the innovative key technologies of 5G-R core network and wireless network networking to adapt to the railway management mechanism and reliability requirements.It analyzes the technical optimization and innovation of 5G-R railway common equipment in terms of redundancy mode,function sinking,fault detection and reversal mechanism,etc.;5G-R wireless network adopts the same-site equipment redundancy mode,and the paper analyzes the technological innovation of RRU redundancy,BBU redundancy and PCI planning,etc.;it also highlights the benefits of the train-ground integrated transmission system,including reduced roof antennas,decoupling of services and communication,unified spatial and temporal benchmarks,and cost savings.展开更多
为支撑5G-R(5th Generation Mobile Communication Technology for Railway)建设,需构建具备高隔离、高可靠、可管可控特性的新一代承载网络。文章对比分析了切片分组网(SPN)、IP无线接入网(IPRAN)与光传送网(OTN)等3种主流承载技术,并...为支撑5G-R(5th Generation Mobile Communication Technology for Railway)建设,需构建具备高隔离、高可靠、可管可控特性的新一代承载网络。文章对比分析了切片分组网(SPN)、IP无线接入网(IPRAN)与光传送网(OTN)等3种主流承载技术,并通过实验验证及性能测试,评估其在切片隔离性、传输时延、时间同步等方面的表现。研究表明,SPN技术深度融合时分复用与分组交换优势,支持从L1到L3的综合业务承载,具备硬隔离切片、超高精度同步、多业务融合承载等关键能力,能够有效满足铁路5G-R及既有通信业务的高安全、高可靠承载要求,具备良好推广前景。展开更多
文摘This paper analyzes the communication business needs and application characteristics based on China's railway operation scenarios.Focusing on the specific needs of railways,the 5G-Railway(5G-R)system adds railway-specific functional network elements on the basis of general architecture.In terms of system networking,it focuses on the innovative key technologies of 5G-R core network and wireless network networking to adapt to the railway management mechanism and reliability requirements.It analyzes the technical optimization and innovation of 5G-R railway common equipment in terms of redundancy mode,function sinking,fault detection and reversal mechanism,etc.;5G-R wireless network adopts the same-site equipment redundancy mode,and the paper analyzes the technological innovation of RRU redundancy,BBU redundancy and PCI planning,etc.;it also highlights the benefits of the train-ground integrated transmission system,including reduced roof antennas,decoupling of services and communication,unified spatial and temporal benchmarks,and cost savings.
文摘为支撑5G-R(5th Generation Mobile Communication Technology for Railway)建设,需构建具备高隔离、高可靠、可管可控特性的新一代承载网络。文章对比分析了切片分组网(SPN)、IP无线接入网(IPRAN)与光传送网(OTN)等3种主流承载技术,并通过实验验证及性能测试,评估其在切片隔离性、传输时延、时间同步等方面的表现。研究表明,SPN技术深度融合时分复用与分组交换优势,支持从L1到L3的综合业务承载,具备硬隔离切片、超高精度同步、多业务融合承载等关键能力,能够有效满足铁路5G-R及既有通信业务的高安全、高可靠承载要求,具备良好推广前景。
