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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