System and Method for granting Virtualized Network Function Life Cycle Management

A virtualized network function manager (VNFM), comprising:

• a processor that generates a grant request for a virtualized network function (VNF) life cycle management (LCM) operation, wherein the grant request comprises a requested wide area network (WAN) connectivity requirement for connecting multiple sites that virtualized network function components (VNFCs) of the virtualized network function (VNF) instance are placed in, and the VNF to be operated comprises at least two VNFCs placed in different sites;
• and
• a network interface that sends the grant request to a network functions virtualization orchestrator (NFVO) and receives a grant response from the NFVO, wherein the grant response comprises WAN infrastructure manager (WIM) identifier and a granted WAN connectivity requirement approved by the NFVO, wherein, the granted WAN connectivity requirement describes a granted resource requirement for managing a WAN connectivity connecting the multiple sites across a WAN, wherein the network interface further sends a resource allocation request to the WIM according to the WIM identifier, wherein the resource allocation request comprises the requested WAN network resource information derived from the granted WAN connectivity requirement.

A network functions virtualization orchestrator (NFVO), comprising:

• a network interface that receives a grant request for a virtualized network function (VNF) life cycle management (LCM) operation from a virtualized network function manager (VNFM), wherein grant request comprises a requested wide area network (WAN) connectivity requirement for connecting multiple sites that virtualized network function components (VNFCs) of the virtualized network Function (VNF) are place in, and the VNF to be operated comprises at least two VNFCs placed in different sites;
• a processor that determines a WAN connectivity for connecting the multiple sites across a WAN according to the requested WAN connectivity requirements, wherein the network interface further returns a grant response to the VNFM;
• wherein, the grant response comprises a WIM identifier and a granted WAN connectivity requirement approved by the NFVO, wherein, the granted WAN connectivity requirement describes a granted requirement for managing the WAN connectivity connecting the multiple sites across the WAN.