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“Unbundling” “Open Source”

“Softwarization” “Cloudification”

•  Software/Hardware Decoupling

•  Unbundled Function Blocks

•  Control-/User-plane Separation

•  Open Source Software (OpenStack, CORD)

•  Open Source Hardware (OCP, TIP)

•  Open Interfaces (Fronthaul, API)

•  NFV (Network Functions Virtualization)

•  SDN (Software Defined Networking)

•  Orchestration & Network Slicing (XaaS)

•  From CAPEX model to OPEX model

•  Virtualization & DevOps Environments

•  Dynamic & Automated Operation

Design principles for 5G

Toward a new paradigm, All-IT Network architecture

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Future Infra – All IT Network Architecture Today Infra

Fixed

Unaware

Manual

Fat & Monolithic

Domain-Specific

Scalable

Cognitive

Automated

Lean

End-to-end

Static and monolithic mobile network is no longer viable. Distinguished 5G values can be efficiently offered via new telecom infra architecture

Composable

Open

Mission-critical

Scalable

Optimized System

“ATSCALE” & “COSMOS”

SKT’s approach – ATSCALE / COSMOS

ATSCALE / COSMOS White paper download

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New Services

§  Software-defined Infrastructure §  Open Hardware and Software §  Universal Platform

§  Next-Generation OSS §  Network slicing §  Software-defined RAN §  Software-defined Core

§  Ultra High Data Rate (AR/VR…) §  Low Latency (Connected car, Public safety …) §  Massive Connectivity (IoT)

ATSCALE / COSMOS – simple view

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WAN

End-to-end Network Orchestration Local NFV Orchestrator Transport Infra Orchestrator

Unified-O

Edge DC Central DC Open & Programmable H/W

Resource Abstraction Layer

Open & Programmable H/W

CO

SMO

S

Virtualized Network Functions

Fronthaul

L1/L2

RF Remote Unit

4G

5G

RNF ESF

SDRAN

CNF CSF OSF

vCore

Transport Infrastructure Transport Open H/W POTN

Network Service Functions

TNF

uCTN

Mobile Connectivity Functions

uCTN

Service Orchestration and Exposure

Low Latency Service Immersive Media

Telco Service

Virtualized Network Slice #1 #2

#N N

G-O

SS (E

2E R

esource Mgm

t., Cognitive &

Intelligent Autom

ation)

ATSCALE / COSMOS – detailed view

Software-defined RAN

Virtualized Core

Unified Converged Transport Network

RNF: Radio Network Function, CNF: Core Network Function, TNF: Transport Network Function, ESF: Edge Service Function, CSF: Centralized Service Function

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①  Open Front-haul and modular RAU •  Open front-haul for flexible RAN function split •  Standard interface for RAU

② CP/UP separation through standard interface •  UP in dedicated H/W and CP in virtualized function •  Standard and open interface between UP/CP

③ Open H/W and S/W •  White-box, Bare-metal, OCP-based H/W •  OpenStack-based S/W

④ MEC •  Proximity-based Mobile Edge Services •  E2E Network Slicing incl. RAN, Transport, Core

⑤ Analytics-based SON

SDRAN Orchestration

Virtualized Functions

Radio Network Functions (UP, CP, RP)

Edge Service Functions

Ops Supp. Functions

Virtualization

Open H/W User Plane Control Plane

Remote Access Unit (RAU) User Plane – Lower Layer Radio Unit

Edge Cloud

① Open Front-haul ② CP/UP separation

③ Open HW/SW

④ Biz Enabling with MEC

⑤ Analytics

A key component of ATSCALE - Software-defined RAN (SDRAN)

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End-to-end Network Orchestration

Local (DC #i) NFV Orchestrator

North-Bound I/F (Service Orchestration, NG-OSS, BSS)

South-Bound Interface (Local NFV Orchestrator, Transport Infra Orchestrator, PNF/VNF)

Transport Infra. Orchestrator Local (DC #j) NFV Orchestrator

Dynamic End-to-End Network Slice

E2E Network Slice Catalog E2E Network Slice Life-Cycle Mgmt.

PNF/VNF Adaptor

PNF VL VL

VNF VNFC

VNFC VNFC VL PNF

VNF VNF

Local Network Slice (DC #i) Local Network Slice (DC #j)

Open API

Generic VNFM

Day-0 Configuration (Deployment)

Common VIM Generic VNFM Common VIM

NFV MANO

Service Orchestration

BSS

Transport-SDN

Local NS LCM

NS LCM

Service LCM

VM

VM Container

VNF LCM Resource LCM

Day-N Configuration (Service Config.)

Descriptor On-board E2E Network Slice

LCM

Service LCM Order LCM

NG

-OSS

(Inventory Mgm

t., Collection, E

2E A

ssurance, Analytics, C

ontrols)

Status

NS

LC

M

Status LCM Action

TNaaS

LCM: Life-Cycle Management NS: N/W Service VNF: Virtual N/W Function VNFC: VNF Component VIM: Virtualized Infra Manager VL: Virtual Link PNF: Physical N/W Function DC: Datacenter MANO: Mgmt. and Orchestration

Dynamic E2E Network Slicing & its Life-Cycle Management(LCM)

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Media IoT AI Autonomous driving

Telco (LTE/5G)

Physical Resource

Service-Optimized Platform

Open Hardware

(Physical Infrastructure)

Services

Open Software

(Virtual Infrastructure)

Unbundled

Server(CPU) GPU Network Storage

Virtual Resource

SW-Defined Compute

SW-Defined Networking

SW-Defined Storage

AI Compute Cloud

Virtualization Layer

Data Center Operation

Automation/ Intelligence

High-Speed NW Analytics

COSMOS: Composable, Open, Scalable, Mission-critical Optimized System

Open Software and Hardware for telco-grade Mission-critical services

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ü Hybrid Resource (VM, Container, BM)

ü Open Source based

ü Optimized for diverse workload (5G, AI, …)

COSMOS’ Open Software Architecture

SDDC(Software Defined Data Center) based on Open source

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STK is actively engaged in diverse open source community activities in pursuit of ‘open innovation’

SK telecom’s open source community activities

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M-CORD

SK telecom with leading service providers, AT&T and Verizon, is envisioning an open 5G platform

* Open source EPC (from Radisys), RAN L2, L3 (from Radisys), Scalable S/PGW (Intel)

Contributing Members

Collaborators

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M-CORD

M-CORD showcased innovation both for mobile network infrastructure and services at MWC `17

MME disaggregation & IoT GW

Connectionless for Static IoT

End-to-End Network slicing

Public safety w/ Network cookie

Active-testing & Analytics

INFRASTRUCTURE Services

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ü Kubernetes based Life-Cycle management

ü SONA+ONOS based Virtual Network + Ceph

ü Optimization for Telco-workload

OpenStack in SK telecom

Community version OpenStack + SONA (Virtual network) + SKT Ceph (Storage)

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TIP Project Groups

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Telecom Infra Project (TIP)

TIP started to rethink the existing telecom infrastructure to support the unconnected people

Access Projects Backhaul Projects Core & Management Projects

OpenCellular –Wireless Access Platform Design

Edge Computing

People and Process System Integration and

Site Optimization Solutions Integration

Open Optical Packet Transport Core Network Optimization

Greenfield Telecom Networks

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(RF)  BaiCells,  AceAxis,  AW2S    (Lab  &  Infra)  Facebook  

TIP – 4G Unbundled Project

•  Construct an end-to-end unbundled and integrated 4G solution

•  Migrate to 5G as solutions & technology become available

•  Participating members:

Resolve the technical barriers to rollout of carrier-grade services with simpler, streamlined designs based on open API

Lead

SI

SW

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Open innovation through Ecosystem collaboration is an accelerator in the journey to 5G