Patent ID: 11861391
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A network node, operative to maintain Virtual Network Function (VNF) service and network service availability and continuity during Network Function Virtualization Infrastructure (NFVI) software modifications of a NFVI providing at least one Virtual Resource (VR) hosting at least one VNF, comprising processing circuitry and a memory, the memory containing instructions executable by the processing circuitry whereby a Virtualized Infrastructure Manager (VIM) is enabled and is-operative to:
obtain NFVI software modifications constraints of a management and orchestration (MANO) hosted by the NFVI and of the VNF hosted by the NFVI, the constraints specifying conditions for an NFVI operation and maintenance workflow from the VNF perspective to enable the VNF to mitigate the impacts caused by the NFVI operation and maintenance;
send a notification that an upcoming change, that is part of the NFVI software modifications and that will impact the at least one Virtual Resource (VR), is about to start;
apply the NFVI software modifications through the management of NFVI resources; and
send a notification about changes in the VRs, indicating completion of the NFVI software modifications.