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5G Essentials

Learn 5G service-based architecture, The 5G slice, RAN, Beamforming, New Radio and more.

This course features a mixture of lecture and hands-on training, making it possible to understand essential 5G concepts by allowing you to work directly with your own 5G network. You will follow a step-by-step approach to analyze the key components in a working 5G network. You will work directly with the UE, RAN and core services. You will perform basic call flow analysis through demonstration and optional Wireshark downloads. A hands-on approach to learning 5G is the best way to learn this new technology!

When you successfully complete this course, you will possess a well-rounded, vendor neutral, understanding of key components within the 5G network architecture and become fully empowered to take an active role in working with your 5G engineers.

Learn more about this topic now. View the webinar 5G - The most powerful “G” on the planet

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GK# 100414
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Who Should Attend?

  • Professionals planning to use 5G Access
  • Professionals looking to merge 5G and Wifi6 radio technology

What You'll Learn

  • 5G EN-DC architecture
  • 5G Stand-alone architecture
  • Beamforming, mm-wave, massive-mimo
  • 5G Access technology, O-RAN, and v-RAN
  • New Radio technology, numerology
  • Narrowband IoT support technology
  • IMS in the 5G Network
  • Network Slicing
  • 5G call trace analysis

Course Outline


You will gain exposure to the entire course contents in a very high-level course overview. You will also learn how to access additional information to stay current with 5G.

  • 5G vs 4G features
  • Mobility essentials:
    • Visiting
    • Home
    • Roaming
    • Control Plane
    • User Plane
  • 5G EN-DC
  • 5G Stand Alone
  • 5G Options
  • LTE vs New Radio
  • How to obtain additional 3GPP information about 5G


New Radio

New Radio is the replacement for LTE. Learn the differences and similarities between NR and LTE here.

  • Understanding why we need these three very different spectrums
    • sub 1 gig
    • mid band
    • millimeter waves
  • Priority Sectors in New Radio
  • Beamforming
  • Pilot Signals
  • Massive mimo
  • Densification
  • Industrial Applications
    • NB-IoT and LTE-M
    • 5G Massive Machine Type Communications


5G EN-DC Radio Access Network Architecture

You will extend the EN-DC core into the Radio Access network. You will diagram message flows within the 5G EN-DC network. You will learn practical applications for sub gig to millimeter wave RF spectrum.

  • eNodeB
    • Baseband Unit (BBU)
    • Remote Radio Head (RRH)
  • gNodeB
    • Control Unit (CU)
    • Distributed Unit (DU)
    • Remote Unit (RU)
  • Small Cell
  • Front/mid haul architecture
    • Common Public Radio Interface (CPRI)
    • Centralized Radio Access Network (C-RAN)
    • Cloud-RAN
  • Bearer components in the E-UTRAN
  • Bearer components in 5G EN-DC
  • 5G EN-DC Call Flow Exercises
    • 4G Access Stratum Call Flow
    • 4G Non-Access Stratum Call Flow
    • Authentication Essentials
    • X2 handoff to gNodeB
    • User Plane essentials


5G EN-DC Core Architecture

You will study the core components of the 5G EN-DC network, also known as 5G Non-Stand Alone (5G NSA). Emphasis will be on the interoperability of architecture components and flow paths. Using network diagrams, you will plot the pathway of both user plane and control plane components.

  • RAN architecture
  • Evolved Packet Core in a 5G network
  • Authentication center (AUC)
  • Equipment identity register (EIR)
  • Service Gateway (SGW)
  • Packet Data Network Gateway (PGW)
  • Mobility Management Entity (MME)
  • 5G EN-DC Topology LAB Exercises
    • Control Plane message pathways
    • User Plane message pathways


IMS Integration

You will learn how the IMS network is integrated into 5G. While study of the IMS is a 5-day class itself, this section will review the role of the IMS, cover a few of the major components, and illustrate what components of the IMS change when integrating into a 5G network.

  • The role of the IMS
  • Protocols
    • SIP, Diameter, DNS (enum), RTP
  • IMS core Essentials
    • P-CSCF
    • I-CSCF
    • S-CSCF
    • SCC
    • TAS
    • HSS
    • PCRF
  • IMS Call control and media paths
  • 5G IMS integration
  • IMS Exercise
    • Call control path
    • RTP packet path
  • Lab exercise
    • IMS call flow in a 5G network


5G Stand Alone (SA)

Up to now you have been studying 5G EN-DC or Non-Stand Alone. Now you will learn the massive changes that arise with the implementation of 5G Stand alone. Many powerful features become possible only if 5G SA is deployed.

  • 5G Services
    • AMF and SMF control functions
    • NSSF, AMF selection and slice access.
    • NEF, AF and service exposure
    • NRF and service discovery
    • Database and DB frontend services
      • UDR
      • UDM
      • AUSF Service including:
        • SUCI - Subscription Concealed Identifier
        • SUPI – Subscription Permanent Identifier
      • PCF
    • SEPP – Security Edge Protection Proxy
      • Certificate of Authority Concerns
  • gNodeB, NG-AP, and the
  • Comparing SA vs NSA (Stand Alone vs Non-Stand Alone)
  • EN-DC and X2-C messaging
  • IMS integration
  • Slicing


5G Stacks

A review of the Protocols in the 5G architecture. Many 4G protocols continue into 5G with a few very important additions that are described in this section. Security personnel in particular need to pay close attention to this section.

  • Transport NAS and SMS over HTTP
  • PDU Session
  • N2 Interface
  • NG Application Protocol (NGAP) TS 38.413
  • Session Management Function
  • N11 Interface
  • Interworking with the EPC (TS 23.501 -
  • 5G Cloud Based Services
    • Service operation naming
    • Container-based Design of SBA (1 of 2)
    • Container-based Design of SBA (2 of 2)
    • HTTP Reverse Proxy
    • HTTP/2
    • JSON


5G Mobility management

Mainly for the support of giga speeds and slicing, 5G mobility simplifies the tracking of UEs. This section describes how the UE location is tracked.

  • Tracking Area (TA)
  • Tracking Area List (TAL)
  • Registration Area
  • Timers
  • Paging
  • Session and Service Continuity (SSC) mode 1 and 2
  • Session and Service Continuity (SSC) mode 3
  • Priority Paging and QoS
    • Paging Policy Differentiation (PPD)
    • Network Triggered Service Request
    • QoS Profile
    • QoS Flow Marking
    • Service Data Flow (SDF) Filter
    • 5QI (QoS Flow ID)
  • Lab Exercises
    • Mobility within a Registration Area (Tracking Area List)
    • 5G paging Call flow
    • 5G Registration


5G Infrastructure

A study of where the 5G elements are commonly located within the network, paying close attention to geographic location and distances. The section answers the question, “where is all this stuff?”

  • 5G Changes to the Access Layer
  • 5G Network Location of elements
  • 5G E2E Latency Requirements


The 5G Slice

Essentially, 5G reinvents the VPN, taking service delivery platforms to the hardware itself. While a common VPN is an overlay network, slicing implements the “VPN idea” directly on the 5G network itself. This opens up a level of capability, security, and mobility not realized by modern VPNs. This chapter will explore slicing architecture, applications, and capability.

  • Understanding the motivation for Network Slicing
    • The similarities that would make you think “VPN = Network Slice”
    • The differences between VPN and Network slicing
    • The slice buyer expectations and deliverables
    • The slice provider Template (What to deliver)
    • Why Slicing can deliver on an SLA contract
    • Expectations on roaming to another service provider.
  • Slice Architecture
    • Network Slice Instance
    • Slice Service Type
    • Network Slice Subnets (RAN, Core, Transport)
    • Network Slice Template
    • Network Slice Assistance Information
    • Information Object Class (TS-28541)
    • Network Functions Virtualization
    • Network Resource Model
    • Solution Set
    • Vertical and Horizontal Slices
  • Core Slicing
    • The Slice selection process
    • Roaming with local breakout
    • Roaming with remote breakout
    • N4 Interface - Packet Forwarding Control Plane Protocol (PFCP)
    • Service Function Chaining (SFC) Architecture RFC 7665
    • Tunneling and the GTP Tunnel
    • PDU Session Types
  • RAN Slicing
    • The 5G RAN overview
      • QCI, Scheduling, Radio Layer
    • Midhaul functional split
      • 5G UE Radio Access Layers
      • Limitations of CPRI
      • Functional Split
      • AAU, DU, and CU using the Option 2 Functional Split
      • Cloud-RAN
    • O-RAN architecture
    • OpenRAN
    • vRAN


Using Unlicensed Spectrum

  • Interoperability with Wi-Fi
  • LTE-U
  • LAA
    • Listen Before Talk (LBT)
  • MulteFire
  • New Radio Unlicensed (NR-U)
    • 5G Radio Frame Format
  • SAS New Radio Unlicensed (NR-U)
  • CBRS Summary CBRS Architecture Synchronous NR-U
  • Requirements for Commercial Operation in 3550-3700 MHz CBRS Band Locating


US Unlicensed Spectrum in the Mid-band

  • 3100-3450 & 3450-3550
  • CBRS Band - Three Tier Approach
  • C-Band
  • U Nil Bands (5 GHz)
  • UNI Bands (6 GHz)
  • 7-8 GHz


Multi-Operator Core Networks (MOCN)

  • Introduction to MOCN
  • Active Carrier Sharing MOCN Call Flow


Multi-Access Edge Computing

  • 8 Network Function Virtualization Components
  • Why Two Bridges?
  • Simple NFV (Network Function Virtualization) Example
  • MEC Reference Architecture in a NFV Environment
  • Mobile Edge Computing to Multi-access Edge Computing


EU and PDU Session State

This section is an essential review prior to studying actual call flows. Ultimately, call flow impacts mobility and session state. By understanding the goal of managing mobility and session state, understanding call flow is made clearer.

  • 5GMM main states in the EU
  • 5GMM main states in the network
  • UE PDU Session States
  • SMF PDU Session States


5G Flow Diagrams

  • LTE eNB - 5G gNB dual connectivity (EN-DC)
  • LTE eNB - 5G gNB dual connectivity (EN-DC) with EPC flow
  • 5G Standalone Access: Registration Procedure