| The precise specification of communication systems is a crucial part of their successful development and implementation. Different methodologies for generating high-level formal specifications from informal requirements have been used by researchers and industrial groups. This thesis proposes an automatic approach, which is used for the early stages of the design of communication systems.; In the first part of the thesis, we describe our automatic approach, which is based on Use Case Maps for the capture and design of the requirements and on LOTOS for simulation and validation.; In the second part of the thesis, we discuss the design of two tools for our automatic approach. Ucm2LotosSpec is a tool that supports the automatic translation from UCMs to LOTOS specifications. Ucm2LotosScenarios is a tool that generates LOTOS scenarios from UCMs.; Finally, our proposed approach is applied to a case study of the Location Based Service in the Wireless Intelligent Network, a standard that was under development when this work was done. Stage 2 scenarios for this standard are obtained from informal requirements represented by Use Case Maps. It is concluded that our approach is feasible, based on this experience carried out on a realistic example. |
