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3GPP Documentation

Table of contents

• 5G Core Network
  • Architecture
  • Reference Points
  • Services
  • Network Functions and entities
    • AMF (Access and Mobility Management Function)
    • AUSF (Authentication Server Function)
    • BSF (Binding Support Function)
    • CHF (Charging Function)
    • NEF (Network Exposure Function)
    • NRF (NF Repository Function)
    • NWDAF (Network Data Analytics Function)
    • PCF (Policy Control Function)
    • SMF (Session Management Function)
    • UDR (Unified Data Repository)
• Policy and Charging Control
  • OCS (Online Charging System)
  • PCRF (Policy and Charging Rule Function)

5G Core Network <a name="5GCoreNetwork"></a>

• TS 23.501 - System Architecture for the 5G System
• TS 23.502 - Procedures for the 5G System (5GS)
• TS 23.503 - Policy and Charging Control Framework for the 5G System
• TS 29.501 - Principles and Guidelines for Services Definition
• TS 29.571 - Common Data Types for Service Based Interfaces
• TS 33.501 - Security architecture and procedures for 5G System

Common APIs

• TS 29.571 Common Data Types
• TS 29.122 Common Data Types

Architecture <a name="5GArchitecture"></a>

5G System architecture

PCF/CHF Interfaces

Reference points <a name="5GReferencePoints"></a>

Services <a name="5GServices"></a>

Network Functions and entities <a name="5GNetworkFunctions"></a>

AMF (Access and Mobility Management Function)<a name="AMF"></a>

APIs

• Communication
• Event Exposure
• Location
• MT

AUSF (Authentication Server Function)<a name="AUSF"></a>

• TS 29.509 - Authentication Server Services

APIs

• UE Authentication
• SoR Protection

BSF (Binding Support Function)<a name="BSF"></a>

• TS 29.521 - Binding Support Management Service

CHF (Charging Function) <a name="CHF"></a>

• TS 29.594 - Spending Limit Control Service
• TS 32.240 - Telecommunication management; Charging management; Charging architecture and principles
• TS 32.255 - Telecommunication management; Charging management; 5G data connectivity domain charging; Stage 2
• TS 32.290 - Telecommunication management; Charging management; 5G system; Services, operations and procedures of charging using Service Based Interface (SBI)
• TS 32.291 - 5G system, charging service; Stage 3

NEF (Network Exposure Function) <a name="NEF"></a>

• TS 29.551 - 5G System; Packet Flow Description Management Service; Stage 3

APIs

• Packet Flow Description (PFD) Management

NRF (NF Repository Function) <a name="NRF"></a>

• TS 29.510 - Network Function Repository Services

NWDAF (Network Data Analytics Function) <a name="NDAF"></a>

• TS 29.520 - Network Data Analytics Services

PCF (Policy Control Function) <a name="PCF"></a>

• TS 29.244 - Interface between the Control Plane and the User Plane nodes
• TS 29.507 - Access and Mobility Policy Control Service
• TS 29.512 - Session Management Policy Control Service
• TS 29.513 - Policy and Charging Control signalling flows and QoS parameter mapping
• TS 29.514 - Policy Authorization Service
• TS 29.523 - Policy Control Event Exposure Service
• TS 29.525 - UE Policy Control Service
• TS 29.554 - Background Data Transfer Policy Control Service
• TS 29.594 - Spending Limit Control Service

SMF (Session Management Function)<a name="SMF"></a>

• TS 29.502 - Session Management Services
• TS 29.508 - Session Management Event Exposure Service

APIs

• PDU Session
• Event Exposure

UDR (Unified Data Repository) <a name="UDR"></a>

• TS 29.504 - Unified Data Repository Services
• TS 29.519 - Usage of the Unified Data Repository service for Policy Data, Application Data and Structured Data for Exposure

APIs

• Data Repository
  • Subscription Data
  • Policy Data
  • Exposure Data
  • Application Data

Policy and Charging Control <a name="PCC"></a>

• RFC 6733 - Diameter Base Protocol

• RFC 8506 - Diameter Credit-Control Application

• TS 23.167 - IP Multimedia Subsystem (IMS) emergency sessions

• TS 23.179 - Functional architecture and information flows to support mission critical communication services

• TS 23.203 - Policy and charging control architecture

• TS 23.228 - IP Multimedia Subsystem (IMS) - Stage 2

• TS 23.401 - General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access

• VoLTE Service Description and Implementation Guidelines

OCS (Online Charging System) <a name="OCS"></a>

• TS 29.219 - Policy and charging control: Spending limit reporting over Sy reference point
• TS 32.240 - Telecommunication management; Charging management; Charging architecture and principles
• TS 32.251 - Telecommunication management;Charging management;Packet Switched (PS) domain charging
• TS 32.260 - IP Multimedia Subsystem (IMS) charging
• TS 32.270 - Multimedia Messaging Service (MMS) charging
• TS 32.274 - Short Message Service (SMS) charging
• TS 32.276 - Voice Call Service (VCS) charging
• TS 32.296 - Telecommunication management; Charging management; Online Charging System (OCS): Applications and interfaces
• TS 32.299 - Diameter charging applications

PCRF (Policy and Charging Rule Function) <a name="PCRF"></a>

• TS 29.211 - Rx Interface and Rx-Gx signalling flows
• TS 29.213 - Policy and charging control signalling flows and Quality of Service (QoS) parameter mapping
• TS 23.380 - IMS Restoration Procedures