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Service Function Chain Embedding Framework for NFV-Enabled IoT Application

It is becoming more and more difficult to manage data and resources simultaneously and efficiently in IoT systems. In recent years, network function virtualization (NFV) technology emerges, regarded as one most promising candidate towards efficient resource allocation for IoT application. By adopting NFV scheme, each IoT service, represented by a service function chain (SFC), can be composed of an ordered set of virtual network functions (VNFs). However, existing researchers concentrate on finding optimal or near-optimal embedding solution per SFC, incurring much more computation time. Considering the dynamic nature of IoT service, it is necessary to find feasible and efficient SFC embedding solution as soon as possible. Hence, in this paper, we propose one SFC embedding framework for IoT application. The framework for SFC embedding is labeled as SFC-E-IoT. Each elements in SFC-E-IoT framework is discussed in this paper. When given one SFC, our SFC-E-IoT will find the feasible SFC embedding solution, fulfilling its computing, storage and networking resources. We conduct the simulation work so as to validate the SFC-E-IoT performance.