Research on the railway next generation mobile intelligent network based on distributed architecture
Ding Jianwe · Journal of Beijing Jiaotong University · 2015
Global system for mobile communication-railway(GSM-R)intelligent network plays an important 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 recovery 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 problems,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 remote redundancy networking.