Management Function

Description

The Management Function (MnF) is a logical entity introduced in 3GPP Release 19 as part of the service-based management architecture. It plays the roles of a Management Service (MnS) consumer and/or a Management Service producer. In the 3GPP management framework, management services are provided by producers and consumed by consumers, following the principles of the Service-Based Architecture (SBA) that is already used in the 5G core network. The MnF concept generalizes the roles of management entities, allowing any network function or management system to act as a producer, consumer, or both, depending on the management task.

The MnF is defined in 3GPP TS 28.533 (Management and orchestration; Architecture framework) and TS 28.884 (Management and orchestration; 5G performance measurements). It is a key building block for the integration of management and orchestration in 5G-Advanced and 6G networks. The MnF can be instantiated within a network function (NF), a management system, or a standalone entity. It exposes management capabilities through standardized management services, such as provisioning, fault supervision, performance management, and configuration management. The MnF interacts with other MnFs via service-based interfaces (e.g., MnS producers expose their services, and MnS consumers invoke them).

Architecturally, the MnF is part of the Management Data Analytics (MDA) and management automation framework. It can be deployed in a hierarchical or distributed manner. For example, a centralized MnF in the management system may consume performance data from multiple distributed MnFs in network functions. The MnF supports the separation of concerns: the producer MnF implements the management service logic, while the consumer MnF requests and uses the service. This modularity enables flexible deployment, scalability, and reuse of management functions across different domains (RAN, core, transport, etc.).

The MnF concept is closely related to the Management Service (MnS) and the Management Service Component (MnSC). An MnS is a set of management capabilities offered by a producer to consumers. The MnF is the entity that hosts the MnS producer or consumer role. The MnF may also interact with the Network Function Management Function (NFMF) and the Element Management Function (EMF) in traditional management architectures. In the service-based management architecture, the MnF replaces or augments these traditional management entities, providing a unified way to manage both physical and virtual network functions.

In operation, an MnF acting as a producer registers its management services with a service registry (e.g., the Management Service Registry) so that consumers can discover them. Consumers can then invoke the services using standardized APIs (e.g., RESTful HTTP/2). The MnF also handles authentication, authorization, and accounting for management interactions. The MnF can be dynamically instantiated, scaled, and terminated as part of the lifecycle management of the network. This aligns with the broader 3GPP vision of autonomous networks and zero-touch management.

The MnF is a foundational concept for the 3GPP management and orchestration architecture in Release 19 and beyond. It enables the integration of management with network functions, supports multi-vendor interoperability, and facilitates the automation of network operations. As networks become more complex with network slicing, edge computing, and diverse service requirements, the MnF provides a scalable and flexible way to manage network resources and services.

Purpose & Motivation

The Management Function (MnF) was created to address the need for a more flexible, modular, and service-oriented management architecture in 3GPP networks. Traditional management architectures, such as those based on the Itf-N interface and the Integration Reference Point (IRP) framework, were monolithic and vendor-specific, making it difficult to integrate multi-vendor networks and automate management tasks. The MnF introduces the concept of management services that can be produced and consumed by different entities, following the same principles as the 5G Service-Based Architecture (SBA) for core network functions. This allows management capabilities to be exposed as standardized services, enabling interoperability and reuse.

Before the MnF, management functions were typically embedded within network elements or element managers, and their interactions were defined by static interfaces. This made it hard to dynamically compose management services or to distribute management responsibilities across the network. The MnF solves this by decoupling the producer and consumer roles, allowing any entity to provide or consume management services. This is essential for network slicing, where different slices may require different management services, and for multi-access edge computing (MEC), where management functions may be distributed across edge and central locations.

The MnF also supports the evolution towards autonomous networks, where management functions can automatically discover, negotiate, and invoke services without human intervention. This is a key enabler for zero-touch network and service management (ZSM) as defined by ETSI and 3GPP. By providing a standardized way to describe and invoke management services, the MnF facilitates the development of closed-loop automation, where management decisions are made based on real-time data and analytics. The MnF is therefore a critical building block for the 5G-Advanced and 6G management architecture, which aims to be more agile, scalable, and intelligent than previous generations.