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Glossary term · Other

AI

Artificial Intelligence

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AI is a capability using machine learning and reasoning to support automation, analytics, and optimization across 3GPP radio, core, and management networks.

Introduced
R99
Where
Services › Codecs
Specifications
36 specs
Also in
Radio Access Network, Security, Management
AI Description Purpose What changed Neighbours Specifications

Description

Artificial Intelligence in 3GPP refers to computational techniques that enable systems to learn from data, recognize patterns, make predictions, and support automated decisions. In telecom standards, AI is not a single protocol or network element; it is a cross-cutting capability that can be embedded in network functions, management systems, analytics platforms, and radio access optimization features. 3GPP studies and specifications use AI to support tasks such as traffic prediction, anomaly detection, fault diagnosis, energy saving, mobility optimization, network slicing selection, and management analytics. At a high level, an AI-enabled network component follows a pipeline of data collection, feature extraction, model training or inference, decision generation, and feedback. Data may come from network performance measurements, signaling traces, user equipment reports, RAN measurements, core network statistics, fault logs, or management data. These data are transformed into features that describe network state, traffic patterns, quality of service, or subscriber behavior. A model, such as a machine learning classifier, regression model, neural network, or time-series predictor, is then used to infer a result. The result can be presented to operators, passed to a management function, or used by an automated control loop. In 3GPP architectures, AI can be implemented in several places. In the management domain, network data analytics functions or management analytics systems may use AI to produce insights for network planning, fault management, and service assurance. In the radio domain, AI may assist with beam selection, interference prediction, load balancing, energy saving, or mobility decisions, while still respecting standardized interfaces and protocol constraints. In the core domain, AI may support session management, traffic steering, or slice selection by analyzing service requirements and network conditions. The exact implementation may be centralized, distributed, or hybrid, and may operate offline for model training or online for inference. Key components include data sources, feature stores, model repositories, training pipelines, inference engines, and feedback mechanisms. Standards-related concerns include data quality, model explainability, security, privacy, performance evaluation, and the interaction between AI outputs and traditional network control. 3GPP work on AI and machine learning often emphasizes that AI should complement, not replace, deterministic network functions. The network still needs reliable protocols, interfaces, and management procedures; AI provides additional intelligence by learning from operational data and adapting to complex conditions. Model lifecycle management is also important because network conditions change over time, and a model that performs well during training may need retraining, validation, or rollback before it is used in production. The role of AI in 3GPP networks is to address the growing scale and heterogeneity of mobile systems. Modern networks contain many cells, slices, services, devices, and dynamic traffic patterns, which are difficult to manage with fixed rules alone. AI can help operators detect issues earlier, optimize resource use, improve service quality, and support automation. Because 3GPP networks must remain interoperable and secure, AI is specified or studied as a capability that can be integrated with existing network functions and management frameworks rather than as a standalone technology.

Purpose & Motivation

Artificial Intelligence exists in 3GPP because traditional rule-based network management and optimization struggle with the complexity, scale, and variability of modern mobile networks. As networks evolve from voice-centric systems to massive IoT, enhanced mobile broadband, ultra-reliable low-latency communications, and network slicing, operators must handle enormous amounts of performance data and make rapid decisions across many domains. Fixed thresholds and static policies can be effective for simple conditions, but they cannot easily capture correlations across cells, traffic types, user behavior, environmental factors, and equipment states. AI addresses the limitations of manual operations and deterministic optimization by enabling learning from historical and real-time data. It can predict congestion, detect anomalies, recommend configuration changes, and support closed-loop automation. In the radio access network, AI can help with beam management, interference prediction, and energy saving. In the core and management domains, it can support analytics, fault correlation, and service assurance. This reduces operational cost and improves quality of experience while allowing operators to manage more complex networks. The motivation for standardizing AI-related work is to ensure that AI capabilities are interoperable, secure, and compatible with existing 3GPP architectures. Without common frameworks, each vendor might implement opaque models that cannot be validated, audited, or integrated with network management functions. 3GPP therefore studies data collection, model lifecycle, performance requirements, and interfaces so that AI can be deployed responsibly in telecom networks.

What changed in its specifications

The latest release-to-release comparison of specifications that define AI. Each summary describes the whole specification, not only this term.

TR 21.905Rel-17 → Rel-18

Rel-18 brings only minor changes to TS 21.905: 0 clauses changed, with no change attributed to a release feature.

Full comparison in TR 21.905 →

Release Timeline

Evolution Across Releases

An overview written from the defining specifications, not a verified change history. For the exact text, open the specifications listed below.

Defining Specifications

3GPP specifications that define or reference AI, with the latest known release. Sourced from the 3GPP document catalog — see methodology.

SpecificationTitleRelease
TR 21.905 vj20 3GPP Terminology and Definitions Rel-19 read
TS 22.156 vj20 Service requirements for the mobile metaverse Rel-19 read
TR 22.829 vh10 Enhancement for UAVs; Stage 1 Rel-17 read
TR 22.856 vj20 Feasibility Study on Localized Mobile Metaverse Services Rel-19 read
TS 22.870 vk00 Study on 6G Use Cases and Service Requirements Rel-20 read
TR 22.873 vi00 Technical Report on IMS Multimedia Telephony Service Enhancements Rel-18 read
TR 22.874 vi20 Technical Report Rel-18 read
TR 22.890 vj00 Study on Railway Smart Station Services Rel-19 read
TS 23.090 vj00 USSD Stage 2 Specification Rel-19 read
TS 23.171 v390 LCS Stage 2 for UMTS R99 read
TS 23.271 vj00 LCS Stage 2 Specification Rel-19 read
TS 23.700 vk10 AI/ML Application Layer Support Phase 2 Rel-20 read
TS 25.211 vj00 UTRA FDD Layer 1: Transport & Physical Channels Rel-19 read
TS 26.114 vk11 IMS Multimedia Telephony Client Rel-20 read
TS 26.847 vj00 AI/ML Evaluation in 5G Media Services Rel-19 read
TS 26.854 vj10 Haptics Enhanced Media Streaming and Communication Rel-19 read
TR 26.927 vj00 AI/ML in 5G Media Services Study Rel-19 read
TR 26.928 vj00 Study on eXtended Reality (XR) in 5G Rel-19 read
TR 26.956 vj01 Beyond 2D Video Formats & Codecs Study Rel-19 read
TS 28.104 vk10 Management Data Analytics Rel-20 read
TS 28.105 vk00 AI/ML Management for 5G Networks Rel-20 read
TR 28.809 vh00 Enhancement of Management Data Analytics (MDA) Study Rel-17 read
TS 33.784 vj00 Security aspects of AI/ML in core network Rel-19 read
TR 33.877 vi00 Technical Report on Security Aspects of AI/ML in RAN Rel-18 read
TR 33.898 vi01 Technical Report on 5GS AI/ML Security Rel-18 read
TS 35.240 vk10 5G 256-bit Security Algorithm Set Rel-20 read
TS 35.243 vk00 AES 256-bit Algorithm Set Specification Rel-20 read
TS 35.246 vk00 ZUC based 256-bit Algorithm Set Specification Rel-20 read
TS 37.340 vj30 Overview of Multi-Connectivity Operation using E-UTRA and NR Rel-19 read
TS 37.355 vj30 LTE Positioning Protocol (LPP) Rel-19 read
TS 38.300 vj40 NR and NG-RAN Overall Description Rel-19 read
TS 38.305 vj30 NG-RAN UE Positioning Stage 2 Rel-19 read
TS 38.401 vj30 NG-RAN Architecture Description Rel-19 read
TS 38.423 vj40 NG-RAN Xn Application Protocol Rel-19 read
TS 38.843 vj00 Study on AI/ML for NR Air Interface Rel-19 read
TS 38.914 vk10 6G Radio Scenarios and Requirements Rel-20 read