The Research On Realizing Railway GPRS Data Service Based On Mobile Intelligent Network

According to the study on CAMEL3 protocol and the combination of the GPRS network and intelligent network, this dissertation develops the research on the exploitation about the railway data service. Totally, this dissertation is divided into three parts. The first part introduces the basic knowledge about GPRS intelligent network, and analyses the network structure, detection point, information flow and so on which are involved in the CAMEL3. The second part discusses two schemes, one is triggering the mobile intelligent network by SGSN, and the other is by GGSN. The dissertation analyses both of the two scheme's advantage and disadvantage, and which is appropriate for the railway service. Based on all these analysis, this dissertation educes the conclusion that triggering the mobile intelligent netwok by GGSN is more appropriate for the railway service. The third part introduces the railway data setvice and realization scheme. And based on the new scheme which is triggering the mobile intelligent netwok by GGSN, this paper realizes the railway mobile wicket service and railway mobile terminal multimedia service. And this dissertation gives the concrete network structure and the service flow. The two services make the most of the GSM-R network resource, and provide the direction for the railway service.