Java real-time publish-subscribe middleware for distributed embedded systems

As the complexity of distributed embedded systems is increasing, and frequent upgrades and maintenance are expected, conventional communication models, such as point-to-point and the client-server model are not adequate to keep up with these trends. So we propose a generic Java real-time communication model based on the publish-subscribe model which has proper characteristics for distributed applications. The proposed Java publish-subscribe model has been implemented as middleware, named Java Embedded Bus (JEB). To easily support heterogeneous communication technologies, we propose a middleware-independent plug-and-play JEB device driver model. We have also prototyped the middleware on the demonstrative distributed embedded systems which comprised embedded machines and workstations connected by VME bus and Ethernet.