A Survey on Service Composition Middleware in Pervasive Environments

The development of pervasive computing has put the light on a challenging problem: how to dynamically compose services in heterogeneous and highly changing environments? We propose a survey that defines the service composition as a sequence of four steps: the translation, the generation, the evaluation, and finally the execution. With this powerful and simple model we describe the major service composition middleware. Then, a classification of these service composition middleware according to pervasive requirements interoperability, discoverability, adaptability, context awareness, QoS management, security, spontaneous management, and autonomous management is given. The classification highlights what has been done and what remains to do to develop the service composition in pervasive environments.