5G NG-RAN Signalling

2 Days

5G System Overview


Non Access Stratum Protocols (NAS)


Radio Resource Control Protocol (RRC)


NR Layer 2 Protocols


NG-RAN Protocols


Signaling Flows

Virtual Classroom Training

€ 1730 *
$ 2007 *


€ 1730 *
$ 2007 *


€ 550 *
$ 605 *


*Prices exclude VAT


Talk to us about our volume discounts and corporate rates.

Subscription pricing options are now available. 

This course provides a technical description of layer 3 protocols and signalling procedures defined for the 5G radio access (‘New Radio, NR’) and radio access network (‘NGRAN’) as part of 3GPP Release-15 and Release-16. 

The course uses a top-down approach starting with a high level description of the functionality of different network entities and the interaction needed between on different interfaces. The layer 3 protocols are then discussed one by one in detail in a logical scenario-based sequence. A number of detailed message-by-message signalling sequences will be presented during the course to tie everything together. The course also covers the NR layer 2 protocols.

Protocols and signalling procedures related to the 5GC-internal Service Based Architecture are mentioned but not covered in any detail.

NOTE: This course is not delivered with the FoldOut methodology.


Basic knowledge of 5G network architecture and functions is highly recommended but not compulsory. Reasonably good technical knowledge of protocols and signaling within LTE/EPC is beneficial.

Course Outline

5G System Overview
  • 5G System (5GS) network nodes and interfaces
  • CP and UP protocol stacks
Non Access Stratum Protocols (NAS)
  • 5GS NAS protocols
  • NAS states and state transitions
  • 5G Mobility Management (5GMM) procedures
  • 5GS security architecture
  • 5G Session Management (5GSM) procedures
  • 5GS QoS framework
  • NAS message formats
Radio Resource Control Protocol (RRC)
  • RRC procedure summary
  • System Information
  • RRC states and state transitions
  • RRC Connection Establishment
  • UE capability handling
  • Configuration of SRBs and DRBs
NR Layer 2 Protocols
  • NR protocol stack and channel architecture
  • Service Data Adaptation Protocol (SDAP)
  • Packet Data Convergence Protocol (PDCP)
  • Radio Link Control protocol (RLC)
  • Medium Access Control protocol (MAC)
NG-RAN Protocols
  • Protocol stacks for NG/Xn/F1/E1 interfaces
  • NG Application Protocol (NGAP) procedures
  • Xn Application Protocol (XnAP) procedures
  • F1 Application Protocol (F1AP) procedures
  • E1 Application Protocol (E1AP) procedures
  • Non Stand-Alone NR (EN-DC)
Signaling Flows
  • A number of important message-by-message signalling flows will be presented during the course.
  • Some examples are: 5GS Registration, PDU Session Establishment, Service Request, RNA Update and EN-DC Setup.

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