earticle

영어

This paper presents a component-oriented programming model and middleware support services for building ubiquitous computing (UbiComp) applications that are composed out of smart objects on demand. Applications are realized as graphs representing smart objects and their services binding. Services are provided through high-level abstractions called plugs with semantically rich interfaces that allow them to be discovered and invoked dynamically. Our middleware supports the integration of heterogeneous smart objects by implementing a high level interaction model suited to the end-user and providing dynamic discovery, synthesis and binding of services. In this way we can deploy UbiComp applications that adapt to the dynamics of an Ambient Intelligence (AmI) environment. A smart home application that employees everyday augmented objects is used to illustrate the approach. We give implementation details with an emphasis to the compositional aspects and provide a scalability analysis for the service discovery process.