Participating Operator Network Manager

Description

The Participating Operator Network Manager (POP-NM) is a comprehensive network management system defined in 3GPP TS 32.130. It represents the top-level management entity for a Participating Operator's entire network domain within a collaborative multi-operator architecture. Unlike a Domain Manager (DM) which focuses on a specific domain (like RAN or Core), the POP-NM has a broader scope, potentially overseeing multiple DMs (e.g., a POP-RAN-DM and a POP-CORE-DM) within the Participating Operator's administrative boundary. Its role is to provide integrated, end-to-end management of the operator's contributed resources, ensuring they function as a cohesive whole to deliver the services promised to the superior managing entity (e.g., a Master Network Manager).

In terms of architecture, the POP-NM sits in the management hierarchy between the superior Network Manager (e.g., of a hosting operator or a network slice tenant) and the Domain Managers within the Participating Operator's own organization. It uses the Itf-N reference point for communication with the superior NM. Internally, it may use Itf-N or other interfaces to communicate with its subordinate DMs. The POP-NM is responsible for service management, including the translation of end-to-end service requirements (like SLAs for a network slice) into domain-specific policies and configuration commands that it distributes to its DMs. It performs consolidated fault correlation, root cause analysis across its domains, and aggregates performance data for reporting upwards.

Operationally, the POP-NM handles the lifecycle of services that span the Participating Operator's resources. It manages the activation, modification, assurance, and decommissioning of these services. It is a key point for implementing policy-based management, ensuring security policies are enforced across its domains, and coordinating resource allocation between the RAN and CN parts under its control. By acting as a single point of contact and control for the superior NM, the POP-NM simplifies the complexity of multi-vendor, multi-domain management for the external entity, presenting a unified management view of the Participating Operator's contributed network assets.

Purpose & Motivation

The POP-NM was created to fulfill the need for a managed, hierarchical approach in complex multi-operator partnerships, such as those required for national roaming, mobile virtual network operator (MVNO) hosting, or infrastructure sharing. Before its standardization, managing such collaborations often involved ad-hoc integrations, custom interfaces, and blurred lines of responsibility, leading to operational inefficiencies and disputes. The POP-NM provides a standardized role and interface for an operator to act as an autonomous service provider within a larger ecosystem.

Its primary purpose is to allow a Participating Operator to retain overall control and visibility of its own network while seamlessly integrating its management plane with that of a partner or superior entity. It solves the problem of how to delegate management responsibility for an entire operator's network, not just a single domain, in a way that is scalable and secure. The POP-NM enables the Participating Operator to offer its network as a managed service, with well-defined service boundaries and clear accountability for meeting SLAs. The motivation for its development alongside other POP management functions in Release 12 was the industry's shift towards more flexible and dynamic network sharing models, which demanded a robust, standardized management framework to make such collaborations commercially and technically viable.