Collaborative Request Processing in mobile Service Communities

The increasing user mobility and more and more powerful mobile devices changed the way services are used today, e.g., by taking the user's location into account. Indeed, service interaction models are also influenced by this development making the ad hoc composition of complementary functionalities possible. Here, particular challenges remain in the field of composing services that are hosted on different mobile or fixed devices to commonly fulfill a task of a user. In this paper, we therefore propose a semantically enhanced middleware approach for mobile P2P environments. Our approach especially focuses on the flexible management of service compositions by means of a distributed state management and event handling to facilitate a collaborative request processing.