Request-driven Service Provisioning

Heterogeneous smart and mobile devices increasingly form a pervasive computing environment. Service oriented architecture (SOA) provides a unified view on the resources and services of those environments to make them easily available for applications. However, variations in the reliability and the availability of these services result in special requirements for the interactions of service providers and service requesters. In this paper we propose a SOA approach that is based on temporally and spatially uncoupled interactions, and supports a loose coupling in the terminology of exchanged data. For that purpose we define a service model as well as an interaction model for request-driven service provisioning and present an approach for the implementation of these models