Research On The Fault Diagnosis In The Integrated 3G Mobile Communication Network Management System Based On The Expert System

With the rapid development of the 3G technology and the related services. The Integrated 3G Mobile Communication Network Management System is gradually becoming the fOCus of the operaters. A fault appears in the network might cause a great amount of related alarms. The 3G network includes more equipment elements than the 2G does. So it is becoming a difficult task to lOCate the faults and analyze them. But the traditional Communication Network Management System is operated by labor force which means it depends on the experience of expertise to lOCate and analyze the fault. So it is by no means highly effective.The thesis describes the principle for the fault Diagnosis and technical schemes for design and implementation of the fault diagnosis expert module of the Mobile Communication Network Management System, which consists of working momory, knowledge base and interference engine. The working memory maintains the alarm data collected from net site. The knowledge base keeps the rules used in the interference. As the most important part of the expert system, the engine's function is to select the reliable rules from knowledge base and discover the correct fault cause from the alarm data, then present the result to the users. This thesis successfully applies the Rete's networking and interference technologies to the functional realization of the Fault Diagnosis module. Based on the knowledge used by expert in Fault Diagnosis, the association relationship between alarm data is analyzed and summarized, and then all the association relationship was...