Design principles for 5G Toward a new paradigm, All-IT Network architecture “Unbundling” “Open Source” • Software/Hardware Decoupling • Open Source Software (OpenStack, CORD) • Unbundled Function Blocks • Open Source Hardware (OCP, TIP) • Control-/User-plane Separation • Open Interfaces (Fronthaul, API) “Softwarization” “Cloudification” • NFV (Network Functions Virtualization) • From CAPEX model to OPEX model • SDN (Software Defined Networking) • Virtualization & DevOps Environments • Orchestration & Network Slicing (XaaS) • Dynamic & Automated Operation 1
SKT’s approach – ATSCALE / COSMOS Static and monolithic mobile network is no longer viable. Distinguished 5G values can be efficiently offered via new telecom infra architecture Future Infra – All IT Network Architecture Today Infra Fixed Scalable Composable Unaware Cognitive Open Manual Automated Scalable Fat & Monolithic Lean Mission-critical Domain-Specific End-to-end Optimized System “ ATSCALE ” & “ COSMOS ” 2 ATSCALE / COSMOS White paper download
ATSCALE / COSMOS – simple view New Services § Ultra High Data Rate (AR/VR … ) § Low Latency (Connected car, Public safety … ) § Massive Connectivity (IoT) § Next-Generation OSS § Network slicing § Software-defined RAN § Software-defined Core § Software-defined Infrastructure § Open Hardware and Software § Universal Platform 3
ATSCALE / COSMOS – detailed view Low Latency Service Immersive Media (E2E Resource Mgmt., Cognitive & Intelligent Automation) #N Telco Service #2 Virtualized Network Slice #1 Service Orchestration and Exposure Unified-O End-to-end Network Orchestration Local NFV Orchestrator Transport Infra Orchestrator NG-OSS Virtualized Network Functions RNF ESF OSF CNF TNF CSF Mobile Connectivity Functions Network Service Functions Resource Abstraction Layer COSMOS Edge DC Transport Infrastructure Central DC Transport Open & Programmable H/W Open & Programmable H/W POTN Open H/W uCTN Fronthaul WAN SDRAN Software-defined RAN L1/L2 4G Virtualized Core RF vCore 5G Remote Unit Unified Converged uCTN Transport Network 4 RNF: Radio Network Function, CNF: Core Network Function, TNF: Transport Network Function, ESF: Edge Service Function, CSF: Centralized Service Function
A key component of ATSCALE - Software-defined RAN (SDRAN) ④ Biz Enabling with MEC ① Open Front-haul and modular RAU Edge Cloud • Open front-haul for flexible RAN function split SDRAN Orchestration • Standard interface for RAU Virtualized Functions ⑤ Analytics ② CP/UP separation through standard interface Radio Network Functions Edge Service Ops Supp. (UP, CP, RP) Functions Functions • UP in dedicated H/W and CP in virtualized function • Standard and open interface between UP/CP Virtualization ③ Open H/W and S/W • White-box, Bare-metal, OCP-based H/W Open H/W ③ Open HW/SW • OpenStack-based S/W User Plane Control Plane ④ MEC • Proximity-based Mobile Edge Services ② CP/UP separation ① Open Front-haul • E2E Network Slicing incl. RAN, Transport, Core Remote Access Unit (RAU) ⑤ Analytics-based SON User Plane – Lower Layer Radio Unit 5
Dynamic E2E Network Slicing & its Life-Cycle Management(LCM) BSS Order LCM Service LCM Service LCM Service Orchestration (Inventory Mgmt., Collection, E2E Assurance, Analytics, Controls) NS LCM End-to-end Network Orchestration Status E2E North-Bound I/F (Service Orchestration, NG-OSS, BSS) Descriptor On-board NS LCM Network Slice LCM E2E Network Slice Life-Cycle Mgmt. E2E Network Slice Catalog LCM Action Status South-Bound Interface (Local NFV Orchestrator, Transport Infra Orchestrator, PNF/VNF) PNF/VNF Adaptor Open API Local NS LCM TNaaS NG-OSS Transport Infra. Local (DC #i) NFV Orchestrator Local (DC #j) NFV Orchestrator NFV MANO Orchestrator VNF LCM Resource LCM Transport-SDN Generic VNFM Common VIM Generic VNFM Common VIM VNF VNFC VM VL PNF VNFC VNFC Day-0 Configuration VM Container VL VL (Deployment) VNF VNF PNF Day-N Configuration Local Network Slice (DC #i) Local Network Slice (DC #j) (Service Config.) Dynamic End-to-End Network Slice LCM: Life-Cycle Management NS: N/W Service VNF: Virtual N/W Function VNFC: VNF Component VIM: Virtualized Infra Manager 6 VL: Virtual Link PNF: Physical N/W Function DC: Datacenter MANO: Mgmt. and Orchestration
COSMOS: Composable, Open, Scalable, Mission-critical Optimized System Open Software and Hardware for telco-grade Mission-critical services Autonomous Telco Media IoT AI Services driving (LTE/5G) Service-Optimized Platform Virtual Resource Data Center Open Operation SW-Defined SW-Defined SW-Defined AI Compute Software Compute Networking Storage Cloud (Virtual Infrastructure) Automation/ Virtualization Layer Intelligence Unbundled Physical Resource Open High-Speed Hardware NW Analytics (Physical Infrastructure) Server(CPU Network Storage GPU ) 7
COSMOS’ Open Software Architecture SDDC(Software Defined Data Center) based on Open source ü Open Source based ü Optimized for diverse worklo ad (5G, AI, … ) ü Hybrid Resource (VM, Container, BM) 8
SK telecom’s open source community activities STK is actively engaged in diverse open source community activities in pursuit of ‘open innovation’ 9
M-CORD SK telecom with leading service providers, AT&T and Verizon, is envisioning an open 5G platform Contributing Members Collaborators 10 * Open source EPC (from Radisys), RAN L2, L3 (from Radisys), Scalable S/PGW (Intel)
M-CORD M-CORD showcased innovation both for mobile network infrastructure and services at MWC `17 INFRASTRUCTURE Services MME disaggregation & IoT GW Public safety Connectionless w/ Network cookie for Static IoT Active-testing End-to-End & Analytics Network slicing 11
OpenStack in SK telecom Community version OpenStack + SONA (Virtual network) + SKT Ceph (Storage) ü Optimization for Telco-workload ü SONA+ONOS based Virtual Network + Ceph ü Kubernetes based Life-Cycle management 12
Telecom Infra Project (TIP) TIP started to rethink the existing telecom infrastructure to support the unconnected people TIP Project Groups Access Projects Backhaul Projects Core & Management Projects Open Optical Packet Transpo Edge Computing Core Network Optimization rt OpenCellular –Wireless Acce Greenfield Telecom Networks ss Platform Design People and Process System Integration and Site Optimization Solutions Integration 13 13
TIP – 4G Unbundled Project Resolve the technical barriers to rollout of carrier-grade services with simpler, streamlined designs b ased on open API • Construct an end-to-end unbundled and integrated 4G solution • Migrate to 5G as solutions & technology become available • Participating members: Lead (RF) ¡BaiCells, ¡AceAxis, ¡AW2S ¡ ¡(Lab ¡ SI & ¡Infra) ¡Facebook ¡ SW 14
Open innovation through Ecosystem collaboration is an accelerator in the journey to 5G 15
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