RESOURCE DETERMINATION METHOD AND DEVICE, AND NFVO

Provided are a resource determination method and device, and a network function virtualization orchestrator, NFVO. The method includes: receiving a lifecycle operation for a network service, NS; determining unifiedly resources required by performing the lifecycle operation for the NS, where the resources include resources of a plurality of virtualized network functions, VNFs, and a VNF virtual link, VL, resource; and obtaining unifiedly grant information of the determined resources at least according to the determined resources. Through the technical solution, the problem of having difficulty of ensuring an accuracy for allocating VNF resources and VNF VL resources due to performing a VNF resource grant and allocation process and a VNF VL resource grant and allocation process separately is solved.