Middleware for building pervasive systems

Pervasive software succeeds when it is leveraged permeable into the background of everyday life and work supporting users more properly to fulfill their tasks than they used to do it with pre-existing techniques. Hence, we hypothesize, that a particular pervasive system may comprise certain styles of intelligent networking embedded systems, secure communication patterns, context-aware assisting, novel techniques of interaction and many more sophisticated features. Building such highly flexible systems poses diverse challenges for an underlying middleware platform. This paper reports - from a developers' point of view - on experiences we gained from using a generic middleware framework that targets the rapid development of pervasive systems. Based on two case studies, conducted in the healthcare and home automation domain, we describe in detail how we designed and deployed two prototypical ubiquitous applications. We elaborate the difficulties our designated middleware framework helped to us to overcome, and at th e same time look on the intrinsic complexity networked embedded systems constitute. Finally, we conclude with a set of lessons learned for designing pervasive systems and sketch ideas for future work.