Kang-Won Lee, PhD

Senior Vice President

Corporate R&D Center

SKT over years

T-Map

5G Network

Customer

Experience

Enhancement

New Business

Opportunity

Efficient and

Intelligent

Operation

Some 5G Applications

And…

New Network Should be

Virtualized

Programmable

Flexible

Mobile CORD (early example)

OpenControl

Interfaces

Cloud-Agile Service

Customization

Dynamic radio resource

optimization

NetworkSlicing

Deep Observability

MME, SGW, PGW

Mobile Edge Services

Caching, SON, Billing

Disaggregated/Virtualized RAN

Disaggregated/Virtualized

EPC

BBU, RRUfront haul fabric

Programmable Data Plane

SDN Control Plane - ONOS

NFV Orchestration w/XOS

SDN Fabric

Commodity servers, switches, network access

+

White Box White Box White Box White Box

White Box

White Box

White Box White Box White Box White Box White Box

White Box White Box White Box White Box White Box

SKT driven project at ON Lab

Disaggregated/Virtualized RAN and EPC

Remote radio unit

(RRU)

Traditional Architecture Target Architecture

Control/data plane integrated EPC

•Limited scalability

•Discrete control

•Proprietary H/W for all-purpose

•High Cost

Disaggregated EPC

•Independent Scalability

•Centralized Control

•Choice of H/W best fits the SLA

•Reduced Cost

RU/DU integrated RAN

•Limited Scalability

•Inefficient coordination

•Sub-optimal spectrum usage

•High Cost

eNB

SGW

SGW

SGW

PGW

MME

Internet

PCRF

S1-MME

S1-U

S5

S11 Gx

SGi

User TrafficRU/DU integrated eNBs

PGW-CMME SGW-C

InternetDisaggregatedGW (PGW-U)

Control Platform

PCRF

X2

X2

VirtualizedBBU

VirtualizedBBU

BBUBBU/EPCControl Application

Virtualized BBUControl /data plane

Integrated EPC

Control Signal

DisaggregatedGW (SGW-U)

SGW-U

SGW-U

Control /data planeDisaggregated EPC

Disaggregated & Virtualized RAN

•High Flexibility & Scalability

•Centralized Coordination

•Spectrum usage optimization

•Reduced Cost

with commodity H/W & open source/open APIwith proprietary boxes & solutions

Open HW & SW Projects at SKT

SDDC (SW-Defined Data Center)

CloudNetwork Big Data IoT

Open

Source

Software

ICT Infra Service

Integrated Mgmt.

OpenStack

Container

DevOps

SDC

SDN

SDS

CPU CPU…

SSD SSD…

HDD HDD

………

…

PhysicalResources

(Open Hardware)

VirtualResources

Developers Environment

Resource Management

BSS, OSS

Security etc.

Open Software

* OpenStack, ONOS, Ceph,

Cloud Foundry, Hadoop, …

Software-Defined Technologies

Open Hardware

* Open Compute Project (OCP)

All Flash Storage, Server Switch

All-Flash Storage Systems

KernelSystem SW

Appliance HWArchitecture

Memory Solution& Accelerator

SW-definedPlatform

All-flash Ceph Storage SW ( AF-Ceph)

Flash Caching SW( NV-Cache )

All-flash Media Server( AF-Media)

High-end Enterprise SSD( NV-Drive )

Hadoop & Ceph

Accelerator

Tech Area Products

SW

HW

0

50

100

150

200

71

44

185

118

3 3

114

71

KIOPS

All-Flash Ceph Scale-out Storage

• Ceph: a unified, distributed,

massively scalable open source

storage solutionOPENSTACK

Cinder

OSD OSD OSD

• Optimization for SSD

• Deployed for high performance

block storage in private cloud

Scale-out for

Capacity & Performance

General

Servers

SSD-array

SKT Ceph

Original Ceph

4KB Rand

Write

32KB Rand

Write

4KB Rand

Read

32KB Rand

Read

[ Performance Comparison]

T-CAP Server Switch

• High Speed Switching + VNF Benefits

• Space & Power ↓

• In-Network Analytics

• H/W CapEx & OpEx↓

Open Telco SW Architecture

Cloud Ops (Monitoring & Control Automation)

DevOps ViewService View Operator View

White Box White Box White Box

White Box

White Box White Box

White Box White Box White Box White Box

White Box White Box White Box White Box

Leaf-Spine Fabric

White Box

White Box

ONOS (Networking)

OpenStack VTN

Nova Ceilometer Neutron

RAN/EPC Control Agent Control APPs

SW Defined Networking

SW Defined Storage (Ceph)

TROI Private Cloud3DV T-Fabric

TROS

SONA

SONA Simplified Overlay Networking Architecture

T-ROS Rackscale Operating System

Asset Management

Operation Automation

Bare-metal Provisioning

SW Deployment

T-ROI Rackscale Operation Intelligence

SDDC Operation Intelligence

Real time Monitoring

Operation Automation

Anomaly Detection

3DV 3D Network Visualization

Private Cloud 2.0

OpenStack Based IaaS Service

Self-Service Provisioning

Metering/Monitoring

User’s Dashboard

T-Fabric Mobile PaaS

DevOps based Developer’s Platform

Docker based Container Service

Open Telco API

T-DE (Jenkins, Jira) Interface

Mo

bile

Netw

ork

Da

ta C

en

ter

4G

LTE EPC

LTEIPIP

IP

3G Voice

Cloud

Data Center

5G

SW Defined Data Center

Access Core Internet

Converged IT + NW

All IT Network

Virtualized

Programmable

OpenStack-based

IoTMedia

2G & 3G

3G Data

2G/3G

Voice

WCDMA

CDMA

IP

Siloed

Data Center

ATM

IP

5G will be All-IT Network

Journey has begun

All-Flash Ceph구성 및 최적화

Track I

13:50 ~ 14:30

OCP 하드웨어 및소프트웨어 삽질기

Track IV

17:10 ~ 17:50

To Learn More…

And we are hiring

Send your resume to kangwon@sk.com