OSS/BSS:Operations Support Systems and Business Support Systems NFV Management and Orchestration Os-Ma EM:Element Management OSS/BSS NFV Orchestrator performs the typical Or-Vnfm management functionality for Virtualised VNF Infrastructure Managing: Service, EM1 EM2 EM3 one or several VNFs. Ve-Vnfm VNF and VNF Infrastructure Manager(s) Description VNF 1 VNF Virtualization Layer: Vi-Vnfm > Abstracting and logically Virtual Virtual Virtual partitioning physical resources, Computing Storage Network Nf-Vi Virtualised Or-Vi commonly as a hardware Virtualisation Layer Infrastructure 8 Manager(s) abstraction layer. Hardware resources Computing Storage Network Hardware Hardware Hardware Enabling the software that implements the VNF to use the Execution reference points Other ref缸ence point由 Main NFV reference point underlying virtualized Figure 4:NFV reference architectural framework infrastructure. Providing virtualized resources to the VNF,so that the latter can be executed. 2020/5/21 DE.Lnangi xu,National Key Lab on ISN,Xidian University 9