The great advance of the communications and the importance gained by the mobile systems have increased the development of WAP (Wireless Application Protocol) applications, nevertheless at the present time do not exist methodologies specifically designed for the WAP applications development process.
However, in the last years, several methodologies for the web applications development process have been proposed. One of them is UWE (UML-based Web Engineering) [1]. Although this methodology has specifically been developed for web applications, the similarity between web and WAP systems allows us to propose the use of it, to generate a design stage approach for WAP applications and then to create a specific extension of UWE to build WAP applications.
In order to obtain this, we present a new UWE based model called WAP navigational model for the navigational design and presentational design steps, which we can use to design WAP systems improving the WAP applications development process.