◆ 100% verbatim from Huawei HedEx · nothing invented

5GC Core Optimization for 5G SA
Option 2 · Service-Based Architecture

Configuration and optimization reference for Huawei's 5G core — UNC (AMF · SMF · NRF · NSSF · SMSF), UDG (UPF), UPCF (PCF) and UDM. Every NF description, signalling step, key IE, MML script, counter and KPI formula is extracted directly out of the HedEx libraries on disk.

—5GC KPI formulas

—Verbatim flow steps

—SA procedures

—Huawei fault cases

—Config scripts

1.1

Animated 5GC Architecture — Service-Based

Switch between the SBA, registration signalling and PDU session + user plane views. NF set, interfaces and the Huawei product mapping are transcribed from the UNC NF Description chapter.

1.2

NF Description — verbatim

UNC at a Glance, product positioning, highlights, typical networking, interfaces and technical specifications — exactly as written in the UNC library.

2.1

Initial Registration — 37 steps

Every step below carries its verbatim Message exchange, Trigger conditions and Relevant mechanism text from the UNC 5G Core Signaling Analysis chapter.

UNC → Getting Started → Signaling Analysis → 5G Core Signaling Analysis → Registration Procedures → Initial Registration toctopics/en-us_topic_0000001447473401

2.2

Mobility Registration Update — 33 steps

Verbatim signalling flow.

2.3

5G AKA Authentication — 10 steps

Verbatim signalling flow — SUCI/SUPI, AUSF and UDM interaction.

2.4

UE-initiated Service Request — 30 steps

Verbatim signalling flow.

2.5

PDU Session Establishment — 24 steps

Verbatim signalling flow — SMF selection, N4 session, QoS flow setup.

2.6

AN-initiated AN Release & UE-Initiated Deregistration

Verbatim signalling flows — 7 and 18 steps.

AN-initiated AN Release

UE-Initiated Deregistration

3.1

SA SBA Configuration Logic

Verbatim — UNC → Network Deployment → Initial Configuration and Commissioning → Networking Architecture and Principles.

3.2

Typical AMF Configuration Example

Verbatim end-to-end MML configuration script for the UNC functioning as the AMF.

3.3

Typical SMF Configuration Example

Verbatim end-to-end MML configuration script for the UNC functioning as the SMF.

3.4

Typical NRF & NSSF Configuration Examples

Verbatim MML configuration scripts.

NRF

NSSF

3.5

Networking Interconnection Configuration

Verbatim — configuring the AMF/MME/SGSN and the SMF/PGW-C/SGW-C/GGSN.

4.1

5GC KPI Library — verbatim formulas

Mobility management, session management, NSSF, NRF and converged charging KPIs — exact formula, exact counter IDs, exact unit. Search a counter ID to find which KPI consumes it.

4.2

Huawei Fault Cases — UNC Troubleshooting

Huawei's own documented 5GC troubleshooting cases — basic process, NF selection, EPS fallback, 4G/5G interoperability, interface & link, and NF self-governance.

5.1

Source Provenance

Every claim on this page resolves to a file inside a HedEx library on disk.

libId	Library	Version	Issue	Topics	Date
`CEP0409S`	UNC Product Documentation (VM Containers) — AMF · SMF · NRF · NSSF · SMSF	25.1.0	02	51,504	2025-07-31
`CEP0103J`	UDG Product Documentation — UPF	24.1.0	02	24,816	2024-12-03
`—`	UPCF Product Documentation (Virtual Machine Container) — PCF	25.1.0	05	18,432	2026-01-12
`CEP0427S`	UDM Product Document (Virtual Machine Container)	25.1.0	04	23,751	2025-10-25

Extraction method. Each .hdx is a ZIP archive containing profile.xml, resources/navi.xml (the full topic tree) and per-topic HTML. The signalling flows on this page were parsed out of the <ol> under each topic's Signaling Flow section, preserving Huawei's own Message exchange / Trigger conditions / Key IEs / Relevant mechanism structure.