Open Service Gateway architecture overview

This paper provides an overview of the architecture and specifications defined by the Open Service Gateway Initiative. Gateways are frequently needed to bridge between an internal "embedded control" industry environment and a broader networked environment, such as the Internet. The first section presents a brief overview of the OSGi. Next we present ServiceSpace, a small and efficient framework for writing network extensible applications. Using that framework, an application is defined as a set of components that can be deployed and managed independently of one another. The next section describes the set of components that the Open Service Gateway initiative requires as mandatory parts of a compliant residential gateway. These components provide support for network access (both as a client and a server), device management, and other utilities. The last section focuses on a simple example that makes use of both ServiceSpace and some of the required components.