1. 5G Mobile Network Architecture and Network Integration
Álvaro Martín Heredia
Universidad de Málaga

2. Table of Contents 5G Objective Requirements Architecture PDU Session
Control/User Plane Separation
Service-Based Architecture
Stateless NFs
Exposure Capability
Network Slicing
Non Standalone Deployment

3. 5G for what? eMBB mMTC uRLLC Gigabytes in a second System Capacity
1000x capacity/km2
3D video, UHD screens
Data Rate
>10Gbps per connection
Work and play in the cloud
Smart Home/Building
Augmented reality
Latency
<1ms
Industry automation
Connection Density
1M connections/km2
Voice
Mission critical
application
Battery Life for IoT
>10 years
Smart City
Self Driving Car
Deep Coverage
Ultra Reliability/
<164 dBm MCL
mMTC
uRLLC
Source: ITU-R Rec. M.2083

4. 5G Foundations Flexibility - Virtualization Densification
Network Convergence

5. 5G Architecture PDU Session NSSF NEF NRF PCF UDM AF AMF AUSF SMF UE
Nnef
Nnrf
Npcf
Nudm
Naf
PDU Session
Namf
Nausf
Nsmf
AMF
AUSF
SMF . N1 N2 N4 UE
(R)AN N3
UPF N6 DN
Source: 3GPP TS

6. PDU Session > UE gNB UPF PDU Session DRBs N3 Tunnel APPs QoS Flow 1
IP Flows
QoS Flow 1
QoS Flow 2
QoS Flow 3
QoS Flow 4
Source: 3GPP TS

7. CUP Separation NSSF NEF NRF PCF UDM AF AMF AUSF SMF UE (R)AN UPF DN
Nnef
Nnrf
Npcf
Nudm
Naf
Namf
Nausf
Nsmf
AMF
AUSF
SMF
Control Plane
User Plane N1 N2 N4 UE
(R)AN N3
UPF N6 DN
Source: 3GPP TS

8. Service-Based Architecture(SBA)
NSSF
NEF
NRF
PCF
UDM AF
Nnssf
Nnef
Nnrf
Npcf
Nudm
Naf
Namf
Nausf
Nsmf
AMF
AMF
AUSF
SMF
SMF N1 N2 N4 UE
(R)AN N3
UPF N6 DN
Source: 3GPP TS

9. Service-Based Architecture(SBA)
NFs offer services that other NFs consume.
NRF acts like a DNS server, facilitating service discovery.
Facilitates SDN and NFV concepts in 5G.
Server-Based Interface:
HTTP/2 Application Protocol
JSON Serialization Protocol
TCP Transport Protocol
NRF
Registration
Discovery/Authorization
Service Request/Authorization
AMF
SMF
Source: 3GPP TS , TS

10. Stateless NFs NSSF NEF NRF PCF UDM AF AMF AUSF SMF UE (R)AN UPF DN
Nnssf
Nnef
Nnrf
Npcf
Nudm
Naf
Namf
Nausf
Nsmf
AMF
AUSF
SMF N1 N2 N4 UE
(R)AN N3
UPF N6 DN
Source: 3GPP TS

11. Stateless NFs UDM UDR UDSF PCF AMF AMF AMF NEF
Nudm
UDM
Npcf
Nudr
UDR
UDSF
PCF
AMF
Nudsf
AMF
Namf
AMF
Nnef
NEF
Source: 3GPP Summit in CEATEC Makuhari, Japan, October 17, 2018

12. Exposure Capability NSSF NEF NRF PCF UDM AF AMF AUSF SMF UE (R)AN UPF
Nnssf
Nnef
Nnrf
Npcf
Nudm
Naf
Namf
Nausf
Nsmf
AMF
AUSF
SMF N1 N2 N4 UE
(R)AN N3
UPF N6 DN
Source: 3GPP TS

13. Exposure Capability AF - Application Function
App influence on traffic routing
Interacting with Policy framework for policy control
Accessing NEF
NEF - Network Exposure Function
Exposure of capabilities and events
Secure provision of information from external apps to 3GPP network.
Translation of internal-external information
Events related to users.
Information of Provision capability
Policy and charging capabilities
CN internal capabilities for analytics.
Source: 3GPP TS , TS

14. Exposure Capability NSSF NEF NRF PCF UDM AMF AUSF SMF AF UE (R)AN UPF
Nnssf
Nnef
Nnrf
Npcf
Nudm
Namf
Nausf
Nsmf
Naf
AMF
AUSF
SMF AF N1 N2 N4 UE
(R)AN N3
UPF
MEC Host
Source: MEC Deployments in 4G and Evolution Towards 5G, ETSI White Paper No. 24 Feb 2018

15. Network Functions Virtualization (NFV)
COTS HW
AMF
AMF
AMF
UDM
UDM
UDM
SMF
SMF
SMF
UPF
UPF
UPF

16. Network Slicing RAN CN eMBB Slice V2X Slice AMF SMF UDM RAN Slice eMBB
UPF
PCF
AUSF
V2X Slice
AMF
SMF
UDM
RAN Slice
uRLLC
MEC Host
UPF
UPF

17. Network Slice
A logical network that provides specific network capabilities and network characteristics.
Virtual network over a common shared physical infrastructure that can be created “on-demand” in order to meet specific needs of applications, devices, customers or operators.
Self-contained
Isolated
Configurable and Programmable
Multitenancy capability
Supports one or multiple type of services
Source: 3GPP TS

18. Network Slicing

19. Network Slicing
Source: 3GPP TS

20. 5G TIME LINE
Source: 3GPP

21. Non-Standalone (NSA) Deployment
4G EPC
Control Plane
Data Plane
4G eNB
5G gNB

22. Álvaro Martín Heredia Universidad de Málaga
Thank you!
Álvaro Martín Heredia
Universidad de Málaga