Middleware design issues for ubiquitous computing

Abstract

Our daily lives will be dramatically changed by embedded small computers in our environments. The environments are called ubiquitous computing environments. To realize the environments, it is important to reduce the cost to develop ubiquitous computing applications by encapsulating complex issues in middleware infrastructures that are shared by various applications.In this paper, we describe three middleware infrastructures for supporting ubiquitous computing, that have developed in our projects. Our infrastructures have tried to hide some complexities to make it easy to develop ubiquitous computing applications in an easy way. We also show some lessons learned in our projects.