基于分布式架构的铁路下一代移动智能网研究  

Research on the railway next generation mobile intelligent network based on distributed architecture

作　　者：丁建文[1] 钟章队[2] 蒋文怡[2] 柴金川 

机构地区：[1]北京交通大学国家轨道交通安全评估研究中心,北京100044 [2]北京交通大学轨道交通控制与安全国家重点实验室,北京100044

出　　处：《北京交通大学学报》2015年第2期93-99,共7页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：铁道部科技研究开发计划项目资助(2013X002-A);国家自然科学基金-铁道联合基金重点项目资助(U1334202);教育部科学技术研究重大项目资助(313006)

摘　　要：GSM-R移动智能网在保障铁路安全有序运行方面有着至关重要的作用.作为智能网的关键节点,业务控制点(Service Control Point,SCP)是实现功能寻址、位置寻址和基于位置的呼叫限制等智能业务的关键设备.当前采用SCP异地容灾组网方式,保证SCP系统能够持续提供服务.分析了现有SCP设备的构成和组网结构,结合数据同步面临的问题、新业务扩展及向下一代演进需求,提出了基于分布式架构的SCP系统,给出了两种异地容灾组网方案:基于LDAP目录服务器的负荷分担方案和基于关系型数据库的主备方案,并对两种方案进行了可靠性建模与分析,为SCP设备向下一代发展及异地容灾组网提供参考.Global system for mobile communication-railway（GSM-R） intelligent network plays an im- portant role in ensuring the safe and orderly operation of railway. As the core element of intelligent network, Service Control Point （SCP） is key equipment for providing functional addressing, location dependent addressing, location dependent call barring service, etc. Remote backup and disaster recov- ery networking is used for SCP system currently to ensure providing uninterrupted service. Based on the analysis of structure and networking of current SCP equipment, remote data synchronization prob- lems, new service development and evolution requirements, this paper presents a SCP system based on distributed architecture. Then two remote backup and disaster recovery networking schemes are put forward with reliability modeling and analyzing including the load sharing scheme based on lightweight directory access protocol（LDAP） directory server and the primary-standby scheme based on relational database. These studies could provide references for the development of next generation SCP and re- mote redundancy networking.

关 键 词：铁路智能网 业务控制点 分布式架构 冗余 

分 类 号：U285.21[交通运输工程—交通信息工程及控制] TN915.5[交通运输工程—道路与铁道工程]