The Design of Service Acquisition System for Tiantong Satellite Mobile Communication Terminal

Abstract

In order to maintain national security and social stability, the ground mobile communication system is monitored by security sector in some area that captures information to prevent crime and terrorist attack. Because TianTong (TT)satellite mobile communication system is run by China Telecom publicly, so it must be equipped with capture system to forbid transmission of crime information. By analyzing advantages of independent station, L1 interface and IU interface, the method of data distribution through fiber between Access Network and Core Network is adopted in this system. The data obtained from the IU interface, through the signalling processing and service processing equipment, forms the call list, analyses the SMS and location, and obtains the corresponding user voice of the call. Finally, these service data are stored in the database. The state list and hierarchical state machine (HSM) mothed is used in this design to solve the difficulty of tracking handset’s many states. This design has lots of advantages such as overall data, good expansibility, and easy implementation and so on, which can satisfy the needs of recent and further use extremely. Now, the test of this system is completed and all devices are ready to equip.