An Architecture Description Language for Dynamic Sensor-Based Applications

This paper presents an approach to describe dynamic sensor-based applications using a declarative language called WADL. Dynamic sensor-based applications are characterized by the fact that measurement producers (sensors) and consumers are introduced or removed from an execution environment at run-time. Supporting this degree of dynamism is usually done programmatically, and the WADL intends to simplify this task and to provide developers with an explicit view of the system architecture, while supporting its dynamic evolution. The paper describes the WADL, its implementation on top of the OSGi WireAdmin Service, and some experimentation results.