Resource Allocation Steps for an Efficient End-to-End Service Delivery in Network Function Virtualization: A Survey

Network Function Virtualization (NFV) is a new concept that has recently merged to cope with problems relative to high Capital and Operational expenditures (CAPEX and OPEX) generated by telecommunication hardware equipments. ETSI has proposed an architectural framework for the implementation of the concept. However, before coming to fruition, many challenges are to address. Those challenges include service management and orchestration, privacy and security, trust, and resource allocation. This paper focuses on resource allocation, by bringing an overview of what has been done in the domain and challenges that still need to be addressed. An experimental comparison of two approaches proposed in the coordinated chaining/mapping step of the resource allocation process is made and some orientations are suggested as a future field of research.