| Since the term"Feature Interaction Problem"in telecommunications systems has been coined in 1989, more and more people regard it as an important and serious problem. Experts in China and from other country has done various researches on it, and gradually formed two kinds of methods to detect and solve Feature Interaction Problem: formal method and online method. The online method has gradually become an important part of the researches.Immune system and Feature Interaction Management System have something quite similar to each other. Using immunology in the design of Feature Interaction Management System is now a new kind of online method for detecting and resolving.Begins with the appearance of Feature Interaction Problem, describes the ways to classify Feature Interaction, and lists the variety of sub-methods which belong to formal method or online method. Then the thesis turns to give a general introduction to the key knowledge for designing an Immunology-based Feature Interaction Detecting System in Next Generation Network.Through discussing the methods of call processing and service controlling, Intelligent Network and Soft-Switch System's key technology is analysed, then turn to introduce Immune System and contrast it to Feature Interaction Management System, to find the comparability of them, and then bring on a Feature Interaction Detecting System (FIDS) and its architecture, workflow and peculiarity.In order to analyse in detail that how FIDS works, firstly, through disassembling the workflow of call-forwarding, the idea of designing the detector of feature interaction based on SIB is analysed, then give its availability to detect the feature interaction of call-forwarding service, and then in detail give the analysis of the marching process between detector and service information, at last, discuss about the way to realize immunity in FIDS, such as the affinity. |
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