About the 5G Application (In progress)

Fifth Generation wireless (5G - 5th Generation Mobile Network) is a wireless networking architecture which aims to increase data communication speeds compared it's predecessor 4G Long Term Evolution (LTE).

The diagram below shows the 5G core network components and these defined reference points (interfaces): Per 23.501 4.2.7

N1 — Provides a reference point between the UE and the Access and Mobility Management function (AMF).
N2 — Provides a reference point between the (R) AN and the Access and Mobility Management function (AMF).
N3 — Provides a reference point between the (R) AN and the User Plane function (UPF).
N4 — Provides a reference point between the Session Management function (SMF) and the User Plane function UPF.
N5 — Provides a reference point between the Policy Control Function (PCF) and an Application Function (AF).
N6 — Provides a reference point between the User Plane function (UPF) and a Data Network (DN).
N7 — Provides a reference point between the Session Management function (SMF) and the Policy Control Function (PCF).
N8 — Provides a reference point between the Unified Data Management function (UDM) and the Access and Mobility Management function (AMF).
N9 — Provides a reference point between two core User Plane functions (UPFs).
N10 — Provides a reference point between the Unified Data Management function (UDM) and the Session Management function (SMF).
N11 — Provides a reference point between Access and Mobility Management function (AMF) and the Session Management function (SMF).
N12 — Provides a reference point between Access and Mobility Management function (AMF) and the Authentication Server function (AUSF).
N13 — Provides a reference point between the Unified Data Management function (UDM) and the Authentication Server function (AUSF).
N14 — Provides a reference point between two Access and Mobility Management functions (AMFs).
N15 — Provides a reference point between the Policy Control Function (PCF) and the Access and Mobility Management function (AMF) in case of non-roaming scenario, V-PCF and AMF in case of roaming scenario.
N16 — Provides a reference point between two Session Management functions (SMFs). In a roaming scenario it would be between a Visited SMF and the Home SMF.
N17 — Provides a reference point between Access and Mobility Management function (AMF) and 5G-EIR (5G - Equipment Identity Register Services).
N20 — Provides a reference point between Access and Mobility Management function (AMF) and the Short Message Service function (SMSF).
N21 — Provides a reference point between Unified Data Management function (UDM) and the Short Message Service function (SMSF).
N22 — Provides a reference point between Access and Mobility Management function (AMF) and the Network Slice Selection function (NSSF).
N24 — Provides a reference point between the PCF in the visited network (V-PCF)and the PCF in the home network (H-PCF).
N26 — Provides a reference point between Access and Mobility Management function (AMF) and the Mobility Management Entity function (MME).
N27 — Provides a reference point between NRF (Network Repository Function) in the Visited Network (vNRF) and the NRF (Network Repository Function) in the Home Network (hNRF).
N28 — Provides a reference point between Charging function (CHF) and the Policy Control Function (PCF).
N29 — Provides a reference point between Network Exposure function (NEF) and the Session Management function (SMF).
N30 — Provides a reference point between Network Exposure function (NEF) and the Policy Control Function (PCF).
N32 — The N32 interface is used between the SEPPs of a VPLMN and a HPLMN in roaming scenarios.
N33 — Provides a reference point between Network Exposure function (NEF) and an Application Function (AF).
N35 — Provides a reference point between the Unified Data Management function (UDM) and the Unified Data Repository (UDR).
N36 — Provides a reference point between the Policy Control Function (PCF) and the Unified Data Repository (UDR).
N37 — Provides a reference point between the Network Exposure function (NEF) and the Unified Data Repository (UDR).
N40 — Provides a reference point between Charging function (CHF) and the Session Management function (SMF).
N50 — Provides a reference point between Cell Broadcast Center Function (CBCF) and the Access and Mobility Management function (AMF).
N51 — Provides a reference point between Network Exposure function (NEF) and the Access and Mobility Management function (AMF).
N52 — Provides a reference point between Network Exposure function (NEF) and the Unified Data Management function (UDM).
NLS — Provides a reference point between Location Management function (LMF) and the Access and Mobility Management function (AMF).
NWDAF — Network Data Analytics Function (NWDAF) is a 5G Core Network Function (NF) that collects data from other Network Functions (NFs) of the 5G Core and and provides analytics services – specifically the Network Repository Function (NRF), Access and Mobility Function (AMF), Session Management Function (SMF).

Protocols

NAS-5G - SM, and MM.
NGAP (over SCTP).
PFCP (Packet Forwarding Control Protocol) (over UDP),
L3-7 - Data Traffic (over GTPv2)

Test Cases

Use Cases include the following:

Testing a full 5G core (AMF, SMF, UPF) by emulating 5G UEs and gNBs
Testing the 5G control plane only (AMF + SMF)
Emulating the full 5G core (AMF, SMF, UPF)
Emulating the 5G control Plane (AMF+SMF)
Emulating the 5G Data Plane (UPF)
Emulating the N3IWF (Non-3GPP InterWorking Function)

Landslide emulates UEs, gNodeBs, in the AMF Nodal Test case.

Landslide emulates AMF and SMF in the AMF Node Test Case.

Landslide emulates the UPF in the UPF Node test case.

Landslide emulates UEs, gNodeBs, AMF, SMF, IMS Node in the UPF Nodal Test case.

Landslide emulates the SMF in the SMF Node test case.

Landslide emulates UEs, gNodeBs, AMF, SMF, UPF in the SMF Nodal Test case.

Service Based Nodal and Node Test cases

Service Based Node emulates the following NF nodes: UDM, AUSF, NRF, NSSF , CHF, NEF, LMF, SCP, UDR, SLF, GMLC , BSF, CBCF, SMSF, EIR and PCF.

For Service Based Nodal, there are several testing scenarios that are supported:

1. When SUT is UDM, Service Based Nodal can emulate AMF, SMF and AUSF.

2. When SUT is AUSF, Service Based Nodal can emulate AMF and UDM.

3. When SUT is PCF, Service Based Nodal can emulate AMF, SMF and AF.

4. When SUT is NSSF, Service Based Nodal can emulate NSSF and AMF.

5. When SUT is CHF, Service Based Nodal can emulate CHF , PCF and SMF.

6. When SUT is NEF, Service Based Nodal can emulate AMF and SMF.

7. When SUT is LMF, Service Based Nodal can emulate AMF.

8. When SUT is SLF, Service Based Nodal can emulate NRF.

9. When SUT is SMSF, Service Based Nodal can emulate AMF.

10. When SUT is EIR, Service Based Nodal can emulate AMF.

11. When SUT is BSF, Service Based Nodal can emulate PCF , and AF.

12. When SUT is UDR, Service Based Nodal can emulate UDM , PCF and NEF.

13. NRF is optional to be emulated in a standalone Service Based Node.

14. When SUT is SEPP N32-c, SEPP N32-f, Service Based Node can emulate SEPP (Initiator or Responder).

15. When SUT is AMF, Service Based Node can emulate NWDAF

Abbreviations

SBI – Service Based Interface
NF – Network Function
AF – Application Function
AMF – Access and Mobility Management Function
AUSF – Authentication Server Function
UDM – Unified Data Management
PCF – Policy Control Function
CHF – Charging Function
LMF - Location Management Function
SMF – Session Management Function
SMSF – Short Message Service Function
N3IWF - Non-3GPP InterWorking Function
NSSF - Network Slice Selection Function
NEF – Network Exposure Function
NRF – NF Repository Function
NWDAF — Network Data Analytics Function
UDR – Unified Data Repository
SLF – Subscription Location Function
BSF - Binding Support Function
EIR - Equipment Identity Register
CBCF - Cell Broadcast Center Function
SEPP - Security and Edge Protection Proxy

5G Glossary Acronyms, Terms and Specifications in 5G-Glossary