Name and Value Pair

Description

The Name and Value (NV) pair is a core data structure within the 3GPP Telecommunication Management (TM) framework, specified primarily in the 32-series of technical specifications. It serves as an atomic unit of information for representing management data. Conceptually, an NV pair consists of two components: a 'Name', which is a unique identifier for a specific attribute, parameter, or metric, and a 'Value', which is the actual data instance associated with that name. The 'Name' typically maps to a defined Managed Object Attribute or a Performance Measurement (PM) counter. The 'Value' can be of various data types, such as integer, float, string, counter, gauge, or a more complex structure, depending on the attribute's definition.

Architecturally, NV pairs are used in the interfaces between Network Elements (NEs), Element Management Systems (EMS), and Network Management Systems (NMS). They are the payload of management protocols and file formats used for Performance Management (PM) data collection and reporting. For example, in bulk file transfer of performance measurements (specified in 32.307 and 32.373), PM data is organized as a series of NV pairs within measurement records. Each record corresponds to a specific measurement period and managed object instance (e.g., a cell), and contains multiple NV pairs representing counters like 'Number of successful call setups', 'Uplink interference level', or 'Packet data volume'. The Name provides the context, while the Value provides the measured quantity.

How it works in practice involves generation, collection, and processing. Network Elements internally maintain counters and gauges for various performance indicators. At the end of a measurement period, the NE formats this data into a structured report comprising NV pairs. This report is then transferred to an EMS/NMS via protocols like FTAM, SFTP, or CORBA-based interfaces. The management system uses a metadata dictionary or information model (defined in specs like 32.303 and 32.306) to interpret each 'Name' – understanding its semantic meaning, data type, and units. The system can then aggregate, correlate, and analyze the 'Values' for fault diagnosis, capacity planning, and service assurance. The NV pair's simplicity and flexibility make it a versatile building block for representing diverse management information across different network technologies (2G, 3G, 4G, 5G) within a unified management paradigm.

Purpose & Motivation

The NV pair concept was created to solve the problem of standardizing the representation and exchange of management data in multi-vendor, multi-technology telecommunications networks. Early network management systems often used proprietary data formats, making integration and centralized performance analysis difficult and expensive. There was a need for a common, flexible, and extensible way to model and transport any piece of management information—be it a configuration parameter, a status indicator, or a performance counter.

Its motivation stems from the principles of object-oriented management models, like those defined by ITU-T and TM Forum. The NV pair provides a generic container that can represent any attribute of a managed object. This addresses the limitation of rigid, fixed-format reporting. By decoupling the attribute identifier (Name) from its data (Value), the system can easily be extended: new metrics can be added by defining new Names without changing the fundamental reporting structure or parsing logic. This is crucial for the rapid introduction of new network features and measurements across 3GPP releases.

Historically, its formal adoption in 3GPP Release 8 and detailed specification in the 32-series provided a cornerstone for automated Performance Management. It enabled the definition of standardized performance measurement files (PM files) that could be produced by any compliant NE and consumed by any compliant NMS. This interoperability reduced operational costs and allowed operators to gain unified visibility into network performance. The NV pair's enduring presence through subsequent releases, including 5G, underscores its success as a foundational data modeling construct for network management and orchestration, supporting both traditional OAM and modern NFV/SDN management paradigms.

Key Features

• Atomic data structure consisting of an attribute identifier (Name) and its associated data (Value).
• Used as the primary format for Performance Measurement (PM) data in bulk file reporting (e.g., PM files).
• Supports multiple data types for the Value (integer, float, counter, string, etc.).
• Enables extensible management information models; new metrics are added by defining new Names.
• Facilitates multi-vendor interoperability in network management interfaces.
• Defined in 3GPP TM specifications (32.303, 32.306, 32.307, 32.373, 32.376) for consistent implementation.

Evolution Across Releases

Defining Specifications