A programming framework for service association in ubiquitous computing environments

In a ubiquitous computing environment, an application is a collection of services linked at runtime, which we call service association. To solve service-to-service communication and interaction in service association, a novel programming framework is provided in this paper, which consists of two abstraction models - service component model (SCM) and service association model (SAM). According to SCM, a service can be depicted as an XML document with semantic interface by service description language. Based on SAM, the relation of services can be defined as a service dependency graph, so that dynamic service association can be maintained at the runtime. To evaluate our programming framework, we are developing a prototype system called Intelligent Meeting Room.