June 2016
Alex Jinsung Choi
CTO, SK Telecom
Open-Source Leveraged Telco Infrastructure
1
Feature Phone Computer
IT Server Network
Smartphone
Network virtualization
Programmability, Scalability, Service Agility
Network-IT Convergence
Telco infrastructure is evolving to All-IT Network by software defined technology,
just as feature phone became smart phone by computer technology.
Starting at Data Center Expansion to Mobile Network
All-IT network by
software defined technology
2
SKT Next Gen Infrastructure: COSMOS
SKT’s infrastructure will accommodate platform services, telecom services, and IT services
on a single platform “COSMOS” using open software and hardware technologies.
Server Storage
Open
Hardware (Physical Infrastructure)
T-Phone
T Life Summer
oksusu
Smart Home Application
Virtual Machine Container SDN
Network
Open
Software (Virtual Infrastructure)
Unbundled
Provisioning
Monitoring
LTE-A 5G
LoRa
BSS
OSS
ERP
Smart Factory
Telecom Services IT Services Platform Services Orchestration
“COSMOS (Composable, Open, Scalable, Mobile Oriented System)”
NFV MANO
Image Source: Wiwynn/HP
Big Data
3
Open Infrastructure
Founding Member
Board Chair
Gold Member
OCP Telco Project
SKT joined Open Compute Project (OCP) and Telecom Infra Project (TIP)
to share and lead the open architecture for telco infrastructure.
Server Switch Storage RAN Backhaul Core
Data Center Telco Network
All-IT
Network
4
Open Compute Project
SK Telecom announced the development plan for NV-Array with Facebook and Intel,
and discussed work plan for OCP Telco Project and TIP.
Executive Track (Intel, Facebook, SKT)
Announcement of NV-Array
OCP Telco Panel (AT&T, Verizon, DT, SKT)
Telco Infrastructure Evolution towards 5G
OCP Summit 2016
AF-Media & NV-Array Wedge Switch Trial & T-CAP AF-Media @Hynix Booth
5
Telco needs to clearly define the requirements for open infrastructure
to be extensively used for network function virtualization.
Optimized Performance
for Telco Workload
Hardware Accelerator
Intel Xeon+FPGA
Novel Architecture
for 5G Era
All-flash JBOF Storage
(e.g. Facebook Lightning, SKT NV-Array)
Rack Scale Architecture
(e.g. Ericsson HDS8000)
Design for Smaller and
More Distributed Data Center
Telco Grade
Reliability and Safety
Central Office Re-architecting
Reuse of Legacy Facility
(Power Distribution, Cooling System, etc.)
Environment guideline (e.g. NEBS)
Seismic Tolerance
Open Compute Project Telco Requirements
6
Open Compute Project AF-Media
AF-Media is a high-performance / high-density all-flash storage server optimized for media
streaming, delivering maximized throughput, capacity and response speed.
SCube AF-Media All-flash Media Server
Optimized for UHD/VR Streaming
• Ultra-high throughput
• Minimum footprint, maximum density
• Hot swap SSD, dual power/network
• Minimal hardware cost
• Low power consumption
Ultra High Throughput
High I/O Performance, 40GbE Ethernet
Ultra Small Footprint
16 SSDs in 1U size, 16TB High Capacity
(~5% smaller than HDD)
Ultra Low Power
Under 150W per System Module
(~20% lower than HDD)
OCP contribution
as a open hardware All-flash storage
product
Features of AF-Media
AF-Media (Xeon-D or ATOM)
7
Open Compute Project NV-Array
NV-Array is an all-flash storage array (JBOF) that accommodates 20 NVMe SSD’s
for the next-generation storage solution.
Designed for 5G Storage
SCube NV-Array All-flash NVMe JBOF
PCIe
NV-Array (JBOF*)
Servers
20 NVMe SSD’s in 1U size
High Capacity (over 80TB)
High
Bandwidth
Reliability
& Availability
6 Host Connection with
8GB/s Throughput per each
• High IOPs, Low Latency
• Low cost per GB
• High scalability
• Flexible allocation
• Continuous operation
High
Density
High IO Performance
Millions of IOPS
SSD Drive Hot-Swap Support
OpenBMC Support
Multi Host
Connection
OCP Contribution
as a open hardware
Co-development
with “Lightning”
Key Features of NV-Array
*Just a Bunch of Flash
8
Open Compute Project T-CAP
T-CAP is a converged network appliance,
which integrates high performance Xeon server with data center switch.
Network Applications on ToR Switch
Load Balancing, Firewall, 3rd Party Applications
Convergence of switch and server
T-CAP Converged Network Appliance
• Open hardware
• High computing on a switch
• Lower cost due to convergence
• Simpler deployment and operation
OCP Contribution
as a open hardware
Co-operation with
high performance N/W Controller
T-CAP Use Cases
Server
(Dual E5 Xeon)
Switch
(10/40/100G)
Storage
Data Backup & Network Analytics
Network Traffic Backup and Monitoring
Overlay Gateway for Virtual Network
VTEP(VxLAN Tunnel End Point) Node
9
Open Compute Project Wedge Trial
We build open networking with open source network OS
from the lessons learned by Wedge trial.
Making “Wedge” support OpenFlow
Open Network OS
OF-DPA
Indigo Agent
OpenFlow Control
Lessons Learned
Complexity to support diverse types of
switching silicon and hardware platform
Need vendor agnostic interface layers
(SAI, ACPI)
SKT’s own solution for network auto-
provisioning
Shared and Discussed
at OCP Summit & ONS 2016
… Linux Kernel
Silicon SDK
OpenSwitch
Management Protocol (e.g. OpenConfig, OVSDB)
※ SAI: Switch Abstraction Interface, ACPI: Advanced Configuration and Power Interface
10
Open Compute Project Rack Scale OCP Trial
Rack scale OCP trial will be conducted in two phases,
and its results and experiences will be shared through OCP Telco Project.
Open Rack
OCP Server
JBOD/JBOF Storage
OCP Switch
SKT
Central Office
(Boramae)
Phase 1: PoC for OpenStack & Big Data
• Verify OCP benefits
- power saving, better cooling, higher density,
cost reduction, etc.
• Deploy in Telco data center
- Limit on power supply, coexistence with
traditional racks, etc.
• Define the requirements of Telco OCP
Phase 2: Telco Workload
• Run VNF on OCP hardware
• Identify further requirements on Telco workload
SKT
Central Office
(Bundang)
Image Source: Wiwynn/HP
SKT
Central Office
(Pangyo)
11
CORD Project @ ON.Lab
SK Telecom is leading the Mobile CORD project
to reform mobile network central offices into data centers.
M-CORD for 5G Enabling Platform
Enable virtualized/disaggregated RAN and Core
Deploy network functions as services
Leverage best practices of OpenStack, ONOS, NFV
Use open commodity hardware
12
Telecom Infra Project Overview
… …
Initiated by … Newly joined by
Telecom Infra Project (TIP) started in February 2016 to bring openness to Telco infrastructure
just as OCP did to data center.
Rebuild the telecom infrastructure together
for a sustainable future
Networks of the Future
• Face the growth of the internet and the rise of
data-intensive services like video and VR
• Collaborate on the development of new
technologies
• Rethink how we deploy existing technologies
• Focus on simplicity, flexibility, and efficiency in
everything we do
TIP Work Scope
• Explore new approaches and technologies across three
areas: access, backhaul, and core and management
• Leverage the unique engineering and operational
expertise of each member
• Focus on developing new technologies and exploring
new approaches to deploying in both developed and
emerging markets.
13
Telecom Infra Project SCALE
Future network should be “Simple”, “Cognitive”, “Automated”, “Lean”, “End-to-End”.
Scalable • Efficient Resource
Utilization • On-demand • Adaptive
Lean • Open Source HW/SW • Open Interface • Modularized • Standardized
Automated • Intelligent Operations • Self-configuration • Self-optimization
ATSCALE
Scalable, Cognitive, Automated, Lean, End-to-End
End-to-End • E2E Analytics • E2E Optimization • E2E Orchestration
Cognitive • E2E Network Visibility • Real-time Analytics • Policy-based Optimal
Decisions
14
Telecom Infra Project Software-Defined RAN
• SW-based risk management
• Auto Recovery
• Reconfiguration without service interruption
• Automated operation and optimization with real-time
analytics
Operational Intelligence 2
Open Architecture 1
• Network function virtualization
• Open interface (fronthaul, service API)
• CP-UP separation
• Open HW and SW
Biz. Enabling Platform 3
• 3rd party services
• Edge service slicing
SDRAN Architecture Key Values
SDRAN Orchestration
Virtualized Functions
Access
CP
Analytics
& Infra Mgmt
Distributed
Core Func.
Edge
VAS
Open-source based virtualization
Light-weight, VM-based virtualization
Physical Infrastructure
Access UP HW Open-source HW
Remote Unit (RU)
Access UP HW Radio Unit
Open Fronthaul CP-UP Separation
Open HW
Biz. Enabling with MEC Analytics-based SON
Open SW
Software-based All-IT Network will bring open radio access network (RAN) innovation at scale:
simple, cognitive, and agile.
15
Conclusions
SKT’s next generation infrastructure “COSMOS” and “ATSCALE” are
based on open source hardware and software.
OCP and TIP are two leading communities to be leveraged in “COSMOS”
and “ATSCALE”.
For OCP, SKT will open its storage and network products (NV-Array,
AF-Media, T-CAP).
An OCP trial is under way to get a firsthand experience before massively
applying to SKT infrastructure.
SKT co-founded TIP and co-led Software-Defined RAN innovation at scale.
Top Related