The Research Of Signaling Monitoring And Analyzing Technology

GSM-R is a digital mobile communication system that has been designed for railway. The CTCS3level control systems of the high-speed railway all requires this system to realize and guarantee the timely, reliable, safe scheduling and command between the trains and the control centers. It requires a more strict network service performance at present. Therefore how to persistently guarantee a more reliable communication is a key problem for the construction and operation of GSM-R. It contains a vitally theoretic importance with practical value.After the comprehensive and deep research on the signaling interfaces of Um, Abis, A and PRI and protocols, this thesis has made an analysis comparison on the realization of signaling gathering, monitoring and analyzing of GSM-R. It is actually based on the aforementioned signaling interfaces and protocols in essence. It ultimately proposes a reasonable scheme for the elegant design and realization.Since the railway control system needs to realize several important communication services, this thesis also has made a directive and deep research on the signaling, the interaction procedures and messages, which are concerned with calls, region switching, location updating and so on. Moreover it makes a theoretic preparation for the network optimization using the signaling analysis.Subsequently, we have proposed a skeleton for signaling gathering and monitoring of GSM-R, together with a concrete design of interfaces and protocols using the modules based on the hardware-software schemes. The implementation of the scheme has made a good verification for the rationality and feasibility of the skeleton, and hence has settled a series of problems from gathering, decoding, intelligent analysis to data storage, and so on.Simulation shows that it has realized the full-time monitoring by tracking all the network customers and exchanging data between trains and control centers. Also, it has made a comprehensive and deep research based upon the signaling analysis in terms of the wireless signal coverage, immediate appointment and dropping call. Finally it suggests an improved approach to balance and raise the reliability of the network of GSM-R.