Service Migration Scenarios for Embedded Networks

More and more devices are becoming network enabled and are integrated within one large, distributed system. The service-oriented paradigm is the predominant concept for the implementation of this approach and helps to deal with heterogeneous network infrastructures. For long term deployments, e. g., in process and building automation, installations have to be adaptable over time. During runtime new services will be added to the network, old services will be replaced and deployed services will be relocated to adapt the network to environmental changes and new application fields. Handling these updates is challenging, because the impact on the currently executed applications has to be minimized. In general, such tasks are very application specific. However, the service based application development paradigm allows applying a generic approach for most of the scenarios. This paper presents such a generic solution by adding mechanisms, which are capable of handling service migration and service updates, to a sensor network middleware.