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For telecommunication industry, network functions are designed following a paradigm and in distributed architecture. No matter it is PNF, VNF or CNf, each NF is desgined as multiple modules, which typically includes interfaces module (which is in charge of south-north communication with other NFs), business processing modules (which deals with NF business logics), data storage module (which stores NF data), and operation andf management module (which is in charge of NF operation and management). Within all these functional modules, operation and management module (OAM module), as it has similar functions to different NFs, can be shared as common module, which .
The common operation and management functions used by NF usually include but not limited to: configuration management, heartbeat management, performance management, log management, alarm management. If checking those open-sourced network function projects, such as OAI and Free5GC, it is shown that operation and management functions are non-business-logic related functions. However, they are necessary in NF productions, and play important roles in achieveing observability according to cloud native principles.
As OAM functions are common, reusable and nacessary functions to NF, they can be treated as a group of PaaS service.PaaS
4.2.4 XGVela PaaS Workflow
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