The Semantic Data Space for Loosely Coupled Service Provisioning

Smart environments and mobile computing systems increasingly converge, resulting in the emergence of pervasive computing environments. This development brings up new challenges that pertain to the variable availability and different mobility of heterogeneous services. Existing service interaction patterns in the area of service-oriented architecture (SOA) do not sufficiently address the changed requirements in those highly dynamic environments, which makes new approaches necessary. Our request-driven SOA approach for loosely coupled service provisioning addresses the unreliable and changing character of pervasive computing environments. It decouples interactions of service providers and requesters spatially, temporally, and semantically. The semantic data space, which is introduced in this paper, is one of the central elementary functions of the request-driven approach as it realizes the fundamental interaction model