Abstract: The disclosure relates to a method, system and computer readable media for redesigning and redeploying a network service (NS) upon determining that a running instance of the NS fails to meet at least one NS requirement. The method comprises detecting a change in at least one input model of a NS design; executing a traceability analysis for the change in the at least one input model of the NS design; and upon determining, based on the traceability analysis, that the NS fails to meet the at least one NS requirement, redesigning and redeploying the NS.

Abstract: There is described a method for providing a Virtualized Network Function (VNF) according to Network Service (NS) requirements. The method comprises selecting an on-boarded VNF descriptor (VNFD) from a VNF catalogue, configuring parameters of the selected on-boarded VNFD according to the requirements of the NS and instantiating a VNF according to the configured on-boarded VNFD. There is also described a method for providing a Network Service (NS). The method comprises selecting an on-boarded NS Descriptor (NSD) from an NS catalogue, modifying NSD information of the selected on-boarded NSD and instantiating the NS according to the modified on-boarded NSD.

Abstract: Automation of the design and management of network services is achieved by automating the enactment of a process model. The process model models activities and ordering among actions in a process for the network services. Each activity includes a set of actions and each action is associated with a model-based transformation which transforms one or more input models into one or more output models. A megamodel is constructed. The megamodel incorporates the process model and describes relations among resources to be used by model-based transformations of the process model. The resources include models and meta-models. Based on the megamodel, a transformation chain is generated. The transformation chain contains coordinated sequences of the model-based transformations. The transformation chain is enacted to thereby enact the process model for the network services.

Abstract: There is described a method for providing a Virtualized Network Function (VNF) according to Network Service (NS) requirements. The method comprises selecting an on-boarded VNF descriptor (VNFD) from a VNF catalogue, configuring parameters of the selected on-boarded VNFD according to the requirements of the NS and instantiating a VNF according to the configured on-boarded VNFD. There is also described a method for providing a Network Service (NS). The method comprises selecting an on-boarded NS Descriptor (NSD) from an NS catalogue, modifying NSD information of the selected on-boarded NSD and instantiating the NS according to the modified on-boarded NSD.