Performance analysis and prediction of physically mobile systems

The market of portable computational devices is expanding more and more rapidly. The systems created by the interactions of these devices among themselves and with the surrounding infrastructure result in being quite different from existing traditional systems in terms of connectivity, dynamicity and resource availability. As a consequence, existing performance evaluation and prediction techniques appear to be inadequate to the application to mobile systems. While some adaptations have been proposed for systems presenting some logical mobility (i.e., software mobility), very little has been attempted to provide useful performance prediction methodologies for physically mobile systems.In this paper we present a methodology for modeling performance of physically mobile systems: our aim is to provide guidelines for the designer of the system on how particular physical mobility patterns affect the system performance and on how these measures can be taken into account in the early stages of the system development.