A Prototype for Dynamic Provisioning of QoS-oriented Virtualized Network Functions in the Internet of Things

Maturity of virtualization techniques and the success of rich cloud services have pushed the horizon of a new sophisticated and connected IoT systems over the Internet. However, provisioning, including managing, such systems is still static, and consequently, costly and time consuming. It is poorly suited to the dynamic criterion of such systems. In this paper, self-adaptive management procedures are proposed towards QoS maintaining at the middleware level of IoT systems. The design is based on concepts such as Network Function Virtualization (NFV) and its generalization, Software-defined Networks (SDN) and edge computing. A realistic use case is implemented for illustration and validation purposes. Prototype execution shows the self-adaptive capabilities of the approach to maintain operative QoS while facing unpredicted events such as fire detection.