5G Architecture and Slicing

for Customised Networks

The 5G-MoNArch vision Presented by Marco Gramaglia (UC3M) deputy TM<mgramagl@it.uc3m.es>

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5G MoNArch concept

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5G MoNArch Innovations

• Enhance and complete 5G

network architecture concepts,

make network slicing usable

• Develop and implement dedicated

vertical use cases with specific

functionality requirements

• Proof-of-concept and validation

through simulation and real-world

testbeds – sea port and touristic

city

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5G-MoNArch Innovations (II)

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Functional Innovation: Resource Elasticity

Elasticity: ability to gracefully adapt to load changes in an automatic manner such that at each point in time the

available resources match the demand as closely and efficiently as possible.

Dimensions of elasticity: i) computational, ii) orchestration-driven, iii) slice-aware.

Elastic Intra-slice Orchestration

Elastic Cross-slice Orchestration

AB

C

DE

F

NetworkControl

NetworkOrchestration

Multi-sliceawareness

Single sliceOptimization

VNF elasticity

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VNF Elasticity

Three key contributions of resource elasticity functional innovation:

– Introduce elasticity at both edge and central cloud taking into account the associated constraints of the cloud infrastructure and

the mobile network

– Consider that in 5G cloud resources are shared by different slices and their availability may change according to the dynamic

request of tenants

– Provide an edge cloud architecture where computational and storage resources can be federated, assigned, and scaled where

needed according to the load

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Artificial Intelligence

An AI engine provides the following:

– ability to automate network configuration and

monitoring processes to reduce OPEX

– understanding the configuration and context,

such as the dynamic demand of the

resources, and the varying service

requirements.

– taking actions and automating complex

human-dependent decision-making processes

– ensuring that automated decisions taken by

the system are correct

– finding bottlenecks of service or failure of

network

– rapidly reacting to faults to recover

Source: ETSI ENI White paper, 2017.

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Big Picture: Initial Architecture

Flexible and Adaptive Architecture

Key features

• Slicing support cross

network layer, control layer,

management layer

• Specification of slice-specific

& slice-common network

functions

• Multi-tenancy capable

network management and

orchestration

• PNFs & VNFs integrated into

common framework

• Dynamic resource sharing

between slices Classification in terms of

Slice-specific & Slice-

common Network Functions

New Cross-domain M&O and

Cross-slice M&O component for

E2E slicing management

Centralized controller layer to run

control applications (DESIGN OPTION)

CP/UP Network Layer

Functions of different

technical domains

Orchestration extension

for container

infrastructure (CI)

Definition of new interfaces between

management/controller and network

layer, e.g. Itf-X, MOLI, & SOBI

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E2

E S

erv

ice

Ma

na

ge

me

nt &

Orc

he

str

atio

n (

M&

O)

CSMF

NSMF

Cross-Domain M&O Cross-Slice M&O

NSSMF

Requirements

Translation

Requirements

Update

Service.

Allocation

Service.

Activation

Service.

Analytics

S. Allocation S. Configuration S. Activation

S. Alarm

S. Blueprint

NSSI

Decomposition

S. Performance

Monitoring

S. SOMO

Computational & Orchestration

Driven Elasticity

Security & Resilience Management

S. Measurement

Job

Cross Slice Requirements

verification

Cross Subnet

Requirements verification

CROSS S.

SOMO Slice-aware & Orchestration

Driven Elasticity

Security & Resilience

Management

S. S. Allocation S. S.

Configuration

S. S. Activation

S. S. Alarm

NSD Creation

SS. Performance

Monitoring

S. S. SOMO

Computational, Slice-aware

&

Orchestration Driven

Elasticity Security & Resilience

Management

S. S.

Measurement

Job NF

V M

AN

O

NFV

O

(CS

&

VMs)

VNF

Manager

VMI

CI

VIM

VMIM

CIMF

Big Data

Module

Monitorin

g Data

Cloud enabled protocol stack

Inter-slice control & management

Experiment-driven Optimization Layer: Management & Orchestration

Flexible and Adaptive Architecture Incorporate 3GPP SA5 functional blocks CSMF

(Communication Service Management Function) and

NSMF (Network Slice Management Function) & ETSI

MANO: Extend with 5G-MoNArch NFs

Example Network Slice Allocation Flow

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3

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5

4

8

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12

13 14

6

10

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Data analytics module at the network layer [1]

NWDAF in SBA according to the description in [2]

[1] 5G-MoNArch D2.2 Initial overall architecture and concepts for enabling innovations, Jun. 2018

[2] TS 23.501 V15.1.0 System Architecture for the 5G System, Mar. 2018.

NWDAF provides cross slice, per slice, per UE data analytics, e.g., - Used for network slice selection (NSSF) - Used for cross slice QoS policy

decisions (PCF)

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Data analytics module at the M&O layer [1]

[1] 5G-MoNArch D2.2 Initial overall architecture and concepts for enabling innovations, June 2018

.

E2

E S

erv

ice

Ma

na

ge

me

nt &

Orc

he

str

atio

n (

M&

O)

CSMF

NSMF

Cross-Domain M&O Cross-Slice M&O

NSSMF

Requirements

Translation

Requirements

Update

Service.

Allocation

Service.

Activation

Service. Analytics

S. Allocation S. Configuration S. Activation

S. Alarm

S. Blueprint

NSSI

Decomposition

S. Performance

Monitoring

S. SOMO

Computational & Orchestration

Driven Elasticity

Security & Resilience Management

S. Measurement

Job

Cross Slice Requirements

verification

Cross Subnet Requirements

verification

CROSS S. SOMO

Slice-aware & Orchestration

Driven Elasticity

Security & Resilience

Management

S. S. Allocation S. S.

Configuration

S. S. Activation

S. S. Alarm

NSD Creation

SS. Performance

Monitoring

S. S. SOMO

Computational, Slice-aware &

Orchestration Driven Elasticity

Security & Resilience

Management

S. S.

Measurement Job

NF

V M

AN

O

NFV

O

(CS &

VMs)

VNF Manager

VMI

CI

VIM

VMIM

CIMF

Big Data Module

Monitoring

Data

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Testbeds

* Applications

* Traffic light control (cMTC): Traffic lights which

are connected through wireless connection;

reliable and resilient; data integrity

* Video surveillance (MBB): Video surveillance

required to control entrance to areas, current

status of areas, etc

* Sensor measurements (mMTC); Sensor

measurements on barges which must be

connect through wireless terminals

Focus areas:

– On-site Live Event Experience by means of

VR

– Immersive and Integrated Media: People will

see a part of a touristic city full of real and

imaginary people

– Cooperative Media Production: People will

cooperate in real time with imaginary and

real people who are feeling the same VR

experience.

Traffic control/Surveillance

Barges measurements

Smart Sea Port

(Hamburg)

Touristic City

(Turin)

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Technologies and Setup: Architecture Integration

Hamburg Smart Sea Port Testbed

Implemented innovations and connection with other WPs.

– Flexible adaptive architecture and network slicing

(WP2)

– Network reliability, resilience and security (WP3)

eMBB: Carries the AR traffic. SDAP, PDCP, and

RLC layers are slice-specific. In the c-plane PCF,

UDM and SMF are dedicated to the eMBB slice and

deployed remotely.

URLLC: Used for ITS applications. Service-specific RLC,

PDCP, SDAP in the RAN. In the in c-plane SMF, PCF and

UDM are shared among the slices deployed in the local

edge cloud. C- and u-plane is deployed locally.

mMTC: Carries traffic from environment sensors. RLC,

PDCP, SDAP and UPF are dedicated instances with

customised behaviour deployed in the edge cloud.

All slices use common PHY and MAC layers

In c-plane the AMF and RRC are common for all deployed slices.

Common MAC and

PHY in RAN

Slice specific SDAP,

PDCP and RLC

Dedicated SMF, PCF

and UDM for eMBB Shared SMF, PCF and UDM

between URLLC and mMTC slice Dedicated UPF

for URLLC and

mMTC slices

Cross-domain and

cross-slice security

and resilience

management

functions

Fault Management Multi-connectivity

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Touristic City Turin

Implemented innovations and connection with other WPs.

– Resource elasticity (WP4)

– AI and Big Data analytics (WP4)

– Network slicing (WP2)

eMBB network slice: The eMBB network slice delivers the

high resolution 360 video to the user.

– Higher layers: RLC, PDCP and SDAP are slice-specific.

URLLC network slice is utilized for delivering the low latency

haptic interactions among the avatars.

– Function setup is similar in terms of sharing and

deployment.

– The UPF may be moved from one cloud to the other.

In the RAN , the slices use the common PHY and MAC

layers.

The RRC at RAN and AMF, SMF, PCF and UDM at c-plane

are common to both slices.

3GPP elements CSMF, NSMF and NSSMF include specific

elasticity modules.

Implemented Innovations

Common MAC and

PHY in RAN

Slice specific SDAP,

PDCP and RLC

UPF is slice-specific

Common c-plane

AMF, SMF, PCF and

UDM

Cross slice and cross-

domain elasticity and

management

AI and Big Data

analytics

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Thank you https://5g-monarch.eu/