5G Technologies, Architecture and Protocols

5-day training event
6100-3016

5G technologies represent a paradigm shift in mobile communications, combining advanced radio access techniques, cloud-native core architecture, and a suite of flexible protocols to deliver ultra-low latency, enhanced mobile broadband, massive machine-type communications, and network slicing for customized service profiles. The radio side uses millimetre-wave bands, massive MIMO, beamforming, and carrier aggregation to increase capacity and spectral efficiency, while the disaggregated RAN (including open interfaces like O-RAN) enables virtualization and interoperable multi-vendor deployments. The 5G core adopts a service-based architecture (SBA) built on cloud-native principles—microservices, containerization, and orchestration with NFV and MEC—to provide scalable, resilient control and user plane functions; key protocols include NGAP and SCTP between RAN and core, HTTP/2 and RESTful APIs for service-based interfaces, N1/N2/N3 for signalling paths, and UPF-managed GTP-U or user plane encapsulation for data forwarding. Together, these technologies and protocols enable programmable, policy-driven networks that support new enterprise and IoT use cases while improving throughput, reliability, and operational agility.

Course Outlines

5G Overview

• Why 5G

• 5G Requirements

• How do we fulfill 5G Requirements

5G Timeline

• 3GPP Timelines

5G Architecture - SA and NSA

• Introduction to 5G Architecture

• 5G Deployment Options: Stand Alone (SA) Architecture vs Non-Stand Alone (NSA) Architecture

5G Enabling Technologies

• Introduction to Enabling Technologies

• Massive MIMO & Antennas

• 3D Beam-Forming

• Virtualization in 5G

• Cloud-Native in 5G

• Containers in 5G

• Microservices in 5G

• Automation and Orchestration in 5G

5G Network Architecture

• Next Generation NodeB (gNB) functions in NG-RAN

• Packet Data Unit (PDU Session)

• What is meant by Control Plane and User Plane separation

5G NR Air Interface

• Channel Bandwidth

• NR - Absolute Radio Frequency Channel Number (NR-ARFCN)

• Difference between Global and Channel Raster

• Resource Grid in 5G NR Air Interface

• 5G NR Logical Channels

• 5G NR Transport Channels

• 5G NR Physical Channels

• Physical Signals

• Procedure to Understand 5G channels

• 5G NR Cell Acquisition

• 5G NR Initial Access (RACH Procedure)

• Scheduled Data Transmission Procedure

• Control Resource Set

• Paging Process

5G Core Architecture

• Service-based architecture (SBA)

• Important Takeaways

• Point to Point Interfaces

5G Core Elements

• Access and Mobility Management Function (AMF)

• Authentication Server Function (AUSF)

• Session Management Function (SMF)

• User Plane Function (UPF) - New

• Unified Data Management Function (UDM)

• Policy Control Function (PCF)

• Application Function (AF)

Network Function Virtualization and Network Slicing in 5G Networks

• Network Function Virtualization

• Network Slicing

Remaining Functions in 5G Core Network

• Network Repository Function (NRF)

• Network Slice Selection Function (NSSF)

• Network Exposure Function (NEF)

Identifiers in 5G

• Subscription Permanent Identity - SUPI

• Subscription Concealed Identity - SUCI

• Permanent Equipment Identity - PEI

• Global Unique Temporary Identity - GUTI (5G)

• 5G-S-TMSI

• 5G GUTI to 4G GUTI Mapping

• Tracking Areas in 5G

Procedure in 5G Networks

• UE Power-On and Registration

• UE Idle and Connected Modes

• PDU Session Establishment

• UE Paging Procedure

• Handover and its types in 5G

Service-Based Architecture (SBA) in 5G with Use Cases

• Service-Based Architecture (SBA) in 5G

• Mechanisms for NF services provision

• Concept of Resource  in 5G SBA

• HTTP Methods in 5GC

• HTTP Responses in 5GC

• Naming Scheme for NF Function

• REST APPLIED TO 5G Core Network Service
  Use Case 1: Network Function Registration with NRF

• Use Case 2: NF Service Discovery

• Essentials of Network Slicing in 5G Networks

  • What is a Network Slice?

  • Example of Network Slicing in 5G

  • Single Network Slice Selection Assistance Information (S-NSSAI)

  • Network Slice Subnet Instance (NSSI)

  • Multiple Slice Support

  • Network Slice Instance (NSI) Life Cycle

  • Preparation Phase

  • Instantiation Configuration and Activation Phase

  • Run-Time Phase

  • Decommissioning Phase

  • Network Slicing Management Model: CSMF, NSMF, NSSMF

  • Radio Access Network Slicing Example

  • Slice Availability in the 5G Networks

  • Signalling Related to Slice Availability

  • Network Slice Selection Function (NSSF) Services

  Security in 5G

  • 5G Roaming Architecture

  • Logical Entities for Network Access Security in 5G 

  • Authentication Credential Repository and Processing Function (ARPF)

  • Subscription Identifier De-Concealing function (SIDF)

  • Authentication Server Function (AUSF)

  • Security Anchor Function (SEAF)

  • Network Access Security block diagram

  • Initiation of Authentication Procedure

  • Concealment/Deconcealement of SUPI

  • Authentication and Key Management (AKA) Procedure 

  • 5G AKA Security Hierarchy

  • 5G EAP-AKA for non-3GPP Access Architecture 

  • 5G EAP-AKA Security Key Hierarchy

  Internetworking between 4G and 5G Networks 

  • Core Aspects

  Network Function (NF) Services

  • Access and Mobility Function (AMF) - Services

  • Session Management Function (SMF) - Services

  • Policy Control Function (PCF) - Services

  • Unified Data Management Function (UDM) - Services

  • Network Repository Function (NRF) - Services

  Call Flows

  • Registration Call Flow

  • De-Registration Call Flow

  • UE Triggered Service Request

  • Network Triggered Service Request

  Voice over 5G

  • Introduction to Voice over 5G

  • Codecs for Voice over 5G

  • Session Initiation Protocol (SIP)_ for Control Signalling

  • IP Multimedia Subsystem (IMS) in 5G Network

  • IMS Components

  • IMS Connectivity Requirements

  • UE Registration with IMS-PCSCF Discovery

  • UE Registration with IMS-Signal Flow

  • 3rd Party Registration in IMS

  • SIP Signalling for Voice over 5G Call Setup

  • IMS Media Bearer Establishment for Voice over 5G

  • Teardown of 5G Voice Call

  • EPS Fallback for Voice over 5G