| Software architecture becomes more and more complicated as the evolution of the computer application. The adaptability of the software is the most important consideration while the traditional development methods can't meet the new requirement. The result of some research shows that bottlenecks of requirement and faultages of development exist in software engineering field. The dissertation points out that the evolution of the software development is leaded into complicated and large-scale way,through analyzing the software essential complexities and traditional software development skills.The dissertation describes the three-tiers software architecture,middleware and reusable component skills. Furthermore the dissertation studies the way to develop telecom large-scale system as field-analyzing method is taken into account. In detailed,field-analyzing method distinguishes the common and particular attributes after field character analysis,and then constructs the system model. To support the reusability of requirement analysis,the traceability of design and the consistency in whole software developing period,the author imports the software architecture concept to requirement analysis phase. The function of middleware is to provide a simplified run-time and design-time environment and to help user integrate more flexible and complicated application system. Through combining the field-analysis technology and middleware technology,the author gives a new software development method,which can be described as:a. Construction of the system model on analyzing the field requirementb. Partition the system and construct the reusable component libraryc. Integration of the systemFor detailed discussion,the dissertation demonstrates a system implement using the new method. In particular the design and the implement of the communication middleware CMS is provided in detail. At last the dissertation summarizes the contentand shows what is the next step.
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