Analyzing the 5G Core
Building on the foundation of 5G System Engineering, this course provides a detailed examination of the 5G Core Network. Key emphasis is placed on the Service Based network architecture, as well as the main network procedures that occur during a mobile’s typical interactivity with the 5G network. Analysis of the 5G Registration, PDU Session establishment, PDU Session usage, Policy Control , MEC, 4G Interworking and network slicing will be provided as part of this process.
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5G Service Based Architecture
Topic areas covered include:
- Positioning the 5G System:
- The 5G System.
- Centralized – Radio Access Network.
- C-RAN Impact on the 5G Core.
- 5G Core Network:
- AMF.
- SMF.
- UPF.
- AUSF.
- PCF.
- NEF.
- UDM.
- Supplementary 5G Core Network Functions:
- UDSF.
- NWDAF.
- NSSF.
- NRF.
- CHF.
- SCP.
- SMSF.
- 5G Service Based Architecture:
- SBA Model.
- SBI Interaction.
- Virtualization and Cloud Native.
- 5G Service Based Interfaces:
- SBI Protocol Stack.
- HTTP/2.
- Standardization of 5G SBI APIs.
- 5GC Protocols:
- 5GC Protocols Overview.
- GTPv2-C.
- GTPv1-U.
- 5G NAS.
- NGAP.
- PFCP.
5G Registration Analysis
Topic areas covered include:
- Network Function Registration:
- Service Registration.
- Profile Updates and Heartbeat Mechanism.
- Service Discovery.
- NF Deregistration.
- Status Subscription.
- Device Registration – Part 1:
- Overview.
- AMF Selection.
- NAS Registration Request.
- Interaction with Old AMF.
- NAS Identification Request / Response.
- Device Registration – Part 2:
- Overview.
- Security Phase.
- Registration Status Update.
- Registering the Subscriber.
- Device Registration – Part 3:
- Overview.
- Subscriber Data Acquisition.
- Subscriber Data Subscription.
- Device Registration – Part 4:
- Overview.
- AM Policy Association Establishment.
- PDU Session Reactivation.
- NAS Registration Accept.
- NAS Registration Complete.
- Initial Registration and Security.
5G Security Analysis
Topic areas covered include:
- Supporting Security in 5G:
- 5G Security Overview.
- Standards bodies.
- 5G Cryptographic Processes:
- 5G Security Algorithms.
- Authentication and Key Agreement.
- AV Generation.
- 5G AKA:
- Mutual Authentication.
- High Level 5G AKA Procedure.
- Generation of 5G-SE-AV.
- Device Authentication.
- Authentication Confirmation.
- Key Derivation and Usage:
- Encryption and Integrity Checking.
- Key Derivation Process.
- Protecting Service Based Interfaces – HTTPS:
- TLS Overview.
- TLS Operation.
- Certificate Exchange.
- TLS Cipher Suites.
- Protecting the 5G SBA - OAuth 2.0:
- OAuth 2.0 Basic Concept.
- Access Token Acquisition.
- Access Token Utilization.
- Roaming Security:
- Security Edge Protection Proxy.
- PRINS.
- IPUPS.
- Steering of Roaming Protection.
PDU Session Establishment Analysis
Topic areas covered include:
- PDU Sessions:
- PDU Session Connectivity.
- QoS Model for 5G.
- QoS Rules and Packet Detection Rules.
- QoS Flow Parameters.
- Application Triggering:
- Scenario.
- Procedure.
- PDU Session Establishment Procedure (Part 1):
- Overview.
- NAS PDU Session Establishment Request.
- AMF to SMF – Create SM Context Request.
- SM Related Subscriber Data Acquisition.
- PDU Session Establishment Procedure (Part 2):
- Overview.
- SMF to AMF – Session Establishment Response.
- PDU Session Authentication and Authorization.
- PDU-CAN Session Establishment.
- PFCP Session Establishment.
- PDU Session Establishment Procedure (Part 3):
- Overview.
- PDU Session Establishment Accept.
- NGAP Initial Context Setup Request.
- RRC Reconfiguration.
- PDU Session Establishment (Part 4):
- Overview.
- NGAP Initial Context Setup Response.
- Finalizing the PDU Session.
Utilizing PDU Sessions
Topic areas covered include:
- QoS Flow Establishment (Session Modification):
- Scenario.
- Procedure.
- Utilizing PDU Sessions – Service Request:
- Scenario.
- Procedure.
- Utilizing PDU Sessions – Paging:
- Scenario.
- Procedure.
- Releasing the Access Network Resources:
- Scenario.
- Procedure.
5G Policy and Charging Control
Topic areas covered include:
- 5G PCC Fundamentals:
- High Level Concepts.
- Monetizing Services Using Policy Control.
- Service Data Flows.
- PCC Architecture:
- High Level Architecture.
- Policy Control Function.
- Binding Support Function.
- Network Analytics Related Policy Decisions.
- Access and Mobility Related Policy Control:
- Overview.
- AM Policy Association Establishment.
- AM Policy Control Request Triggers.
- UE Related Policy Control:
- Overview.
- UE Policy Session Creation.
- UE Policy Delivery Service.
- Focus on ANDSP and URSP.
- Session Management Policy Control:
- SM Policy Association Establishment.
- SM Related Policy.
- PCC Binding Mechanism:
- Overview.
- Session Binding.
- PCC and QoS Rule Authorization.
- QoS Flow Binding.
- 5G Charging Concepts:
- 5G Charging Architecture (Service Based).
- Nchf API.
- Converged Charging Example.
MEC Concepts and Architecture
Topic areas covered include:
- MEC Deployment:
- Overview.
- MEC Application Functions.
- MEC Example Scenario.
- MEC Key Concepts:
- Connectivity Models.
- Local Access to the Data Network.
- Standardization of MEC.
- ETSI MEC Framework and Architecture:
- ETSI MEC Framework.
- ETSI MEC Reference Architecture.
- 5G and ETSI MEC Integration.
- ETSI MEC Procedural Aspects:
- Application Package On-Boarding.
- Application Instantiation.
- 3GPP Edge Computing Architecture:
- MEC and 3GPP High Level Architecture.
- Integration with the 5G Core.
- 3GPP Edge Computing – Initial Procedures:
- ECS Discovery.
- Service Provisioning.
- Registration.
- EAS Discovery.
- 3GPP Edge Computing – Operational Aspects:
- EAS Instantiation.
- Application Context Relocation.
MEC and 5G Enablers
Topic areas covered include:
- 5G Enablers for MEC – Local Networks:
- AF Influenced Traffic Routing.
- Traffic Steering Control.
- Local Area Data Networks.
- 5G Enablers for MEC – UL CLs and BPs:
- Uplink Classifiers.
- 5G Uplink Classifier Addition Procedure.
- IPv6 Multi-homing (Branching Points).
- 5G Enablers for MEC – SSC Modes:
- SSC Overview.
- SSC Mode 1.
- SSC Mode 2.
- SSC Mode 3.
- UEs and MEC Application Mobility.
5G and 4G Interworking
Topic areas covered include:
- Interworking with LTE:
- Interworking Key Concepts.
- Single and Dual Registration Mode.
- Single and Dual Registration Mode Mobility:
- 5GC to EPC Mobility (Dual Registration Mode).
- EPC to 5GC Mobility (Dual Registration Mode).
- Mobility with Single Registration Mode Supported.
- Architectural Considerations:
- Architecture for 5G and 4G Interworking.
- N26 Reference Point.
- Idle Mode Mobility Procedures (with N26):
- 5GC to EPC Mobility (Single Registration, Idle Mode).
- EPC to 5GC Mobility (Single Registration, Idle Mode).
- 4G GUTI to 5G-GUTI Mapping.
- 5GS to EPS Handover (N26 Supported):
- Scenario.
- Procedure.
- EPS to 5GS Handover (N26 Supported):
- Scenario.
- Procedure.
- Fallback Mechanisms:
- EPS and RAT Fallback.
- High Level Fallback Procedure.
- Emergency Services Fallback.
5G Network Slicing
Topic areas covered include:
- Network Slicing Concepts:
- Driving Factors for Network Slicing.
- What is a Network Slice?
- High Level Slice Orchestration.
- Standardization.
- Network Slice Template:
- Customer Engagement.
- Alternative Approaches.
- Example NEST - eMBB with IMS Support.
- Example NEST- Commercial Flight Telematics.
- Example NEST - Industry 4.0 and HMTC.
- Network Slicing Architectural Considerations:
- High Level Architecture.
- Network Slice Selection Function.
- Network Slice Admission Control Function.
- Slice Analytics.
- Defining a Network Slice:
- Communication Services.
- Network Slices, NSI and NSSI.
- NSSAI (Network Slice Selection Assistance Information).
- Network Slice Orchestration:
- NSI Lifecycle Management.
- Slice Instantiation.
- NSSI Allocation.
- Utilizing Network Slicing:
- 5G Registration.
- PDU Session Establishment.
- Slice Security:
- Slice Security Options.
- Slice Authentication and Authorization.