Design Principles for 5G
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The document discusses the transition to a new "All-IT Network" architecture for 5G networks based on principles of open source software and hardware, virtualization, and network softwarization. Key aspects of this new architecture include software-defined infrastructure, network functions virtualization, network slicing, open interfaces, and moving from a CAPEX to OPEX business model. The architecture aims to make networks more scalable, automated, lean, and optimized through composable, open solutions like SK Telecom's ATSCALE and COSMOS platforms.
Design Principles for 5G
- 1. 1 “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
- 2. 2 Future Infra – All IT Network ArchitectureToday 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
- 3. 3 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
- 4. 4 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 COSMOS 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 NG-OSS (E2EResourceMgmt.,Cognitive&IntelligentAutomation) 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
- 5. 5 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-haul② CP/UP separation ③ Open HW/SW ④ Biz Enabling with MEC ⑤ Analytics A key component of ATSCALE - Software-defined RAN (SDRAN)
- 6. 6 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 CatalogE2E 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 (InventoryMgmt.,Collection,E2EAssurance,Analytics,Controls) Status NSLCM StatusLCM 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)
- 7. 7 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 ) GPUNetwork 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
- 8. 8 ü Hybrid Resource (VM, Container, BM) ü Open Source based ü Optimized for diverse worklo ad (5G, AI, …) COSMOS’ Open Software Architecture SDDC(Software Defined Data Center) based on Open source
- 9. 9 STK is actively engaged in diverse open source community activities in pursuit of ‘open innovation’ SK telecom’s open source community activities
- 10. 10 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
- 11. 11 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
- 12. 12 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)
- 13. 13 TIP Project Groups 13 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 Acce ss Platform Design Edge Computing People and Process System Integration and Site Optimization Solutions Integration Open Optical Packet Transpo rt Core Network Optimization Greenfield Telecom Networks
- 14. 14 (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 b ased on open API Lead SI SW
- 15. 15 Open innovation through Ecosystem collaboration is an accelerator in the journey to 5G