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[Sk telecom] network evolutionand emerging services for future mobile broadband pt final
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[Sk telecom] network evolutionand emerging services for future mobile broadband pt final

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  • 1. Network Evolution & Emerging Services for Future Mobile Broadband Takki Yu, Ph.D. Network Technology R&D Center, SK Telecom
  • 2. Contents 1. SK Telecom’s LTE/LTE-Advanced 2. Key Trends Driving Network Evolution 3. SUPER Cell 4. RAN Architecture Evolution : Service-Aware RAN / vRAN 5. Emerging Services – 4G/LTE and Beyond 6. Conclusion
  • 3. 1. SK Telecom’s LTE/LTE-Advanced SK Telecom has commercialized LTE in 2011, Multi-Carrier and VoLTE in 2012, and LTE-A in June, 2013 Korea’s First 800MHz + 1.8GHz Called ‘HD Voice’ LTE Multi-Carrier VoLTE LTE-A Carrier Aggregation 2011.7 2012.7 2012.8 2013.6 800MHz World’s First World’s First Nationwide VoLTE World’s First 2013.11 10 + 20MHz (Trial) 2014.01 3 Band (Trial)
  • 4. 1. SK Telecom’s LTE/LTE-Advanced Q. What life-style change do we see after LTE has started? Video Multimedia Web Portal (Dec 2013, Ministry of Science, ICT and Future Planning) Etc. 45.1% 9.8% 19.3% App Store7.9% SNS 13.1% 4.8% A. Mobile Traffic by Content Type 3
  • 5. 1. SK Telecom’s LTE/LTE-Advanced LTE Coverage (Nationwide 99% POP Coverage) LTE-A Coverage (Major 84 Cities, Carrier Aggregation)  Commercially launched CA for 850MHz+1.8GHz - Started from Seoul (Jun. 2013) - Major 84 cities (July. 2013) and being extended  Completed nationwide 99% roll-out - Launched LTE service (Jul. 2011) - Major 84 cities (Apr. 2012) and Nationwide (Jun. 2012)
  • 6. 1. SK Telecom’s LTE/LTE-Advanced Carrier Aggregation - One of the most distinct technologies in LTE-Advanced - Effective bandwidth expansion through concurrent utilization of radio resources across multiple carriers 10MHz Bandwidth 850MHz Carrier 10MHz 850MHz 10MHz 20MHz Effective Bandwidth 1.8GHz LTE over Single Carrier LTE-A over Carrier Aggregation Max. 75Mbps Max. 150Mbps 10MHz 850MHz 20MHz 30MHz Effective Bandwidth 1.8GHz Max. 225Mbps
  • 7. 1. SK Telecom’s LTE/LTE-Advanced Distributed RU (Multi-Frequency, Wideband, MIMO) Internet Cloud DU Cloud RAN Architecture - Cloud DU & Cloud Belt - Separate DU & RU, Centralized DU (BS Cooperation) - Ring(Belt)-type transmission architecture between Cloud DU and RU Cloud Belt Core Network EPC (MME & S/P-GW)
  • 8. 0.4PB 2.2PB 3.5PB 5.7PB 7.1PB 19.2PB 40.3PB 53.3 PB 65.5PB `10.8 `10.12 `11.3 `11.6 `11.9 `12.9 `13 `14 `15 Petabyte/Month 2. Key Trends Driving Network Evolution 1. Rapid Mobile Traffic Growth - Mobile networks have to accommodate exploding traffic growth efficiently and intelligently Year LTE (’11.7.1) SK Telecom’s Mobile Traffic (per month) ’10.8 ’10.12 ’11.3 ’11.6 ’11.9 ’12.9 ‘13 ‘14 ‘15 1. More Multimedia 2. More Services 3. Higher Device Spec. Full HD 4. Higher N/W Speed
  • 9. 2. Key Trends Driving Network Evolution 2. Massive Connectivity (Internet of Everything) - Mobile networks have to accommodate as many of “connected” devices as they can [2012] [2020] ※ Source: IBM
  • 10. 3. Service Enrichment and Data Explosion - Different services has different requirement in network - Lots of rich services creates “meaningful data” helping to understand user behaviors Enterprise Data 2010 2015 VoIP Social Media Sensors & Devices Source: IBM Research Global Technology Outlook 2012 3000 4000 5000 6000 VolumeinExabytes Generated data (Forecast from IBM) Large number of rich services 2. Key Trends Driving Network Evolution
  • 11. Future network requires Concept and Target? 2. Key Trends Driving Network Evolution Higher Intelligence Higher Capacity Higher Efficiency Evolution in  Enabling Tech for High Capacity  Network Architecture
  • 12. 3. SUPER Cell : Motivation Beyond 4G and 5G have gained lots of attention for future radio access systems 1995 1995 2005 2010 2015 Year 100 k 1 M 10 M 100 M 1 G 10 G 100 G GSM CDMA WCDMA HSDPA LTE LTE Advanced Cellular 802.11 .11b .11g .11a .11n .11ac .11ad WLAN 5G 4G 3G 2G Requirements (presented in 3GPP meeting and other conference) - 100 Gbps maximum cell capacity (1000 times larger than LTE) - 1000 times lower energy consumption
  • 13. 3. SUPER Cell : Motivation Q. How much and how have we increased cell capacity so far? A. 1 Million  capacity increase in last 45 years,  Capacity = [Bandwidth]  [Spectral Efficiency]  [# of Cells] A. Small Cell is an effective way for high capacity - combined with other innovative radio technologies 1 10 100 1000 10000 Bandwidth Spectral Efficiency # of Cells 25 25 1600 Source: http://www.arraycomm.com /technology/coopers-law
  • 14. 3. SUPER Cell : Background Hierarchical cell structure where macro and small cells are overlaid Small Cell ?  Remote RU, Pico(Micro)-Cell, Femto-Cell, Relay, etc 【 Small Cell (HetNet Component) 】 ○ Pico (Micro) Cell - DU/RU integrated compact base station - Optical backhaul connected to Core Network ○ Remote RU (RRU) - Separate DU and RRU - DU-RU interface (CPRI, OBSAI) : Optical Fronthaul ○ Femto Cell - Low power node with very small coverage - ISP backhaul connected to Core Network ※ Other technologies ? - Relay, WiFi, Wireless backhaul HetNet ? Small Cell?
  • 15. 3. SUPER Cell : Concept SUPER Cell: SKT’s Future Small Cell Network Architecture - that exploits efficient radio resource utilization, small cell-split, new freq band acquisition 【 SUPER Cell Vision】  Smart • Mobility/capacity enhanced by control/data separation  Unified • Cloud architecture in heterogeneous network  Performance Optimized • Dynamic interference coordination and management  Energy Efficient • Green architecture and functions for power saving  Reconfigurable • N/W operation mode changes interworking with SON Mobility Support High Rate Support Performance Optimized Unified RAN (Cloud and Heterogeneous) Smart (Hierarchy Scheduling) Reconfigurable (Adaptive Operation) Energy Efficient (Power Saving)
  • 16. 3. SUPER Cell : Target and Strategy Target: 100 times capacity enhancement and 10 times cost reduction Higher Radio Resource Efficiency More Cell Splitting More Frequency Bands Lower Operation Cost 1 2 3 4 UE#1 UE#2 UE#3 Massive MIMO 4x Small Cell 9x 3x f1 Freq. f2 fn … foffload MC TD-LTE Wi-Fi Analytics ServerSON Optimization 100 Capacity↑ 10 Cost↓
  • 17. 3. SUPER Cell : Femto Cell ~2010 2011 2014 ~ 850MHz LTE Femto commercialization FRS(Femto Remote System) LTE Outdoor Femto  World’s first LTE Femto commercialized(’12.6)  3GPP Rel.8 based(32UE, 2x2 MIMO, dual-band Wi-Fi, PoE, NTP)  World’s first DU – RU separated type’s LTE Femto  As no boundary btw FRU, no need to H/O for indoor coverage extension  World’s first Outdoor Femto using Femto modem chipset  20W/Path, 32UE Supported  Lower CapEx & OpEx Vs Macro : Trial: Commercialization, LTE Femto LTE Femto (Residential) TD-LTE Femto Compact Home Femto 3G Home Femto 3G Data Femto ’12.1H ’12.2H ’13.1H ’13.2H WAN LAN RESET RUN LTE FDU FRS Digital Unit SPD LNK SPD LNK NOR LNK NOR LNK NOR LNK NOR LNK 0 1 2 3 FRU AC IN C A B A : AC_H B : AC_N C : GND USB • SKT commercialized world first LTE Femto(Public, Residential) in 2012 • FRS and Outdoor Femto are commercialized in 2013
  • 18. 17 4. RAN Architecture Evolution : Cloud RAN   DU-RU Interface Distributed RU Core Network Centralized Digital Processing in Cloud DU • First step: Separate DU/RU & Centralized DU • Second step: BS virtualization by real-time cloud processing Flexible Network Architecture • Efficient resource management via virtualization • Flexible network configuration using open platform Evolution to Cloud RAN
  • 19. 18 4. RAN Architecture Evolution : Service-Aware RAN “Service-Aware RAN” is SK Telecom’s vision for intelligent RAN evolution with Service-Awareness  Intelligent RAN in which service application can be embedded - Utilization of various context information including connectivity-related data  Service application running in the network edge, e.g. access network
  • 20. 19 Context Information - Various context information including connectivity-related data (e.g. Cell ID, Cell loading) - Under the operator’s API policy, external developers can use context information (3rd party application) - Analytics-based N/W optimization in RAN-level Service application is running in RAN that is nearest to users Intelligent service to utilize context information Proximity Context Info. Utilization ISP Network or Operator’s Core Network Two Key Features Radio Access Network Service Function Move to Network Edge Flexible RAN H/W and App Platform (GPP+H/W Accelerator) ConnectivityService App. API ProcessingInteraction - Local processing and storage with fast response time (Local cloud processing) Proximate and contextualized services providing differentiated user experience 4. RAN Architecture Evolution : Service-Aware RAN
  • 21. 20 1. Conventional Access Network • Unified DU/RU • Dedicated H/W 2. SKT’s SCAN (Smart Cloud Access Network) • Centralized Cloud DU • Smart Evolution in Connectivity (CoMP) RAN Evolution in Connectivity RAN Evolution in [ Service + Connectivity ] Cloud DU 3. SKT’s Service-Aware RAN • Service-Aware RAN over SCAN architecture • Converged RAN combining CT and IT Flexible Cloud DU (GPP+H/W Accelerator) ConnectivityService App. API 4. RAN Architecture Evolution : Service-Aware RAN
  • 22. 21 [ Analytics-based Network Optimization ] [ Zone-based Advertisement ] [ Augmented Reality / Game ]  Network optimization and QoE enhancement through analysis of various information from BS and terminals - Inter-operated with SON server and Analytics platform  Zone-based customized advertisement service - Combined with Portal and SNS Service - Localized (Zone) service based on location of BS and Cell ID  Real-time service with short latency (AR, Game, local cloud) - Local processing based on computing power & storage of BS (local cloud processing & pre-loaded contents service) Web PortalN/W info (e.g. Cell ID) Optimized Content Local Server Server 분석 Agent SON 서버 [ Premium Contents Delivery & 3rd Party App ]  Fast & optimized contents delivery (caching and video pacing)  Virtualized platform to adopt 3rd Party app service - Use of network information via API Content, Service Server Analysis Agent SON Server Use Cases (Examples) 4. RAN Architecture Evolution : Service-Aware RAN
  • 23. 22 Teleco. infrastructure become more like IT infrastructure - “Software” defines a function in a computer and now even in smartphone - “Software” could also define a function in telecommunication networks What is NFV? - It realizes virtualization and cloudification of network functions, which can run on the standard servers, to increase service agility and to raise operational efficiency Feature PhoneComputer Smart Phone IT Server Mobile Network Software-Based Network with Flexibility, Programmability, Service Agility 4. RAN Architecture Evolution : vRAN (virtualized RAN)
  • 24. 23 “Vendor-specific Hardware, Low Scalability, Simple Policy-based Operation” “Virtualized, Service-Oriented and Flexible Network” RU#1 RU#2 RU#N #1 #2 #N Internet EPC DPI Video Opt. CDN Access Network Core Network DU Pool RU#1 RU#2 RU#N Internet DU #N DU #1 DU #2 S/W IMS EPC Video Opt. DPI CDN TCP Opt. S/W Orchestrator SDN/Cloud Controller Analytics Platform Analytics-based Control GPP, Standard H/W Virtualized/Cloudified Web Accel. PCRF Legacy Network Software-based Network Goal : More efficient, agile, and intelligent but economic mobile network by exploiting disruptive software-based network technologies 4. RAN Architecture Evolution : vRAN (virtualized RAN)
  • 25. 24 vRAN(virtualized RAN) is SK Telecom’s vision for paradigm shift to S/W- oriented and open RAN architecture - GPP-based virtualized H/W, Intelligent engine with open APIs, Analytics-based optimization, and Open fronthaul interface Legacy RAN vRAN DSP + ASIC RRC MAC PHY RRM O&M “H/W Dependent, Closed Interface, Connectivity-Centric” Scheduler … RU RU Closed Front-haul Centralized DUs “S/W Oriented, Open Interface, Analytics based Intelligent” GPP(x86, etc.) + H/W Accel. Hypervisor API Intelli. App SON Agent RRM … RU RU Open Front-haul LTE-ALTEMACRRC TD-LTE LTE-B … Analytics Platform SON Server Intelligent Engine Connectivity Engine Centralized DUs GPP-based Virtualized H/W RRM: Radio Resource Mgmt, RRC: Radio Resource control, SON: Self-Organizing Network, RU: Radio Unit, GPP: General Purpose Processor, 4. RAN Architecture Evolution : vRAN (virtualized RAN)
  • 26. 25 Further evolution towards 5G requires smart innovation in connectivity and services (1000x Capacity, Soft N/W, and Immersive Services in 2020) 4. RAN Architecture Evolution : 5G Vision SUPER Network (Faster Anywhere) • Enabling Technologies: Small Cell, Massive MIMO, Extended CA • Services: UHD and Immersive Communications Intelligent Network (Cloud Everywhere) • Enabling Technologies: Big Data, Virtual Cell, Cloud-RAN • Services: Cloud Gaming and Augmented Reality Converged Network (Connected Always) • Enabling Technologies: Multi-RAT, Internet of Things, D2D • Services: Connected Car, Proximity Services
  • 27. 5. Emerging Services – 4G/LTE : Btv Mobile Full HD (1080p) Legacy (480p) Btv Mobile is SKT’s Mobile IPTV service on LTE. Full-HD streaming is available on LTE-A commercialized in July, 2013.  Popular live channels(inc. MLB and CJ C&M Contents)  1080p Full HD Contents  Virtual Surround Audio by Fraunhofer Cingo Technology
  • 28. 5. Emerging Services – 4G/LTE : T baseball Multi-view multi-view T baseball is SKT’s mobile broadcast service of Korean Baseball games. Users can watch two different on one screen simultaneously.  2Mbps HD Video Streaming  Two games in one screen, in PIP(Picture- in-picture) format
  • 29. Loss by compression Original sound maintained Melon is music streaming service promising CD quality. Lossless streaming service (FLAC) is provided with LTE-A.  FLAC(Free Lossless Audio Codec) technology (lossless compression) available with LTE-A  Providing Vivid instruments sound and realistic voice 5. Emerging Services – 4G/LTE : Lossless Audio Streaming
  • 30. 5. Emerging Services – 4G/LTE : Internet of Things (IoT) IoT is where physical objects are seamlessly integrated into networks, becoming active participants in biz processes. Connected Smart Car Smart Meter Smart Farm Logistics
  • 31. Higher Speed Lower Latency Criteria 3G/HSPA 4G/LTE Max down speed Max up speed 14.4M 5.7M 150M 75M Latency (Round Trip Time) Approx. 100ms Approx. 10ms  Transmitting high-quality contents - Remote surveillance - Black Box - Medical Equipment  Controlling sensitive equipments - Traffic Systems - Industrial Alarms & Controls Easier Service Integration Circuit- based Packet- based Latency (Round Trip Time)  Providing smart things with IP- based services - Smart Cars with VoLTE, UC - Smart Home Appliances Surveillance Camera Black Box LTE provides the best connectivity for high performance IoT devices that need to process a lot of information. 5. Emerging Services – 4G/LTE : Internet of Things (IoT)
  • 32. 5. Emerging Services – Beyond 4G : UHD UHD Media Services - Wireless UHD streaming will become available with 5G promising 1Gbps anywhere - 5G also enables new UHD media services incl. multi-angle streaming, immersive gaming, etc UHD Streaming New UHD Media Service Immersive Gaming Multi-Angle Streaming
  • 33. 5. Emerging Services – Beyond 4G : Hyper Cloud Cloud Services for Various Devices and Applications A world where Devices are Connected to Cloud Everywhere - More devices will connect to cloud with the help of 5G hyper-connectivity - Requirements for 5G cloud: High reliability (always connected), Large bandwidth, Low latency (especially for cloud gaming) Cloud gaming
  • 34. 5. Emerging Services – Beyond 4G : AR Augmented Reality (AR) - Higher network speed with higher computing power enables to realize AR with small form factor - AR has seen many applications such as wearable devices, cars so on. Car Mobile Wearable
  • 35. 5. Emerging Services – Beyond 4G : Immersive Comm. Immersive Communication - 5G brings more and more immersive communications into reality, opening possibility for new communication services Immersive Telepresence Immersive Comm. for Healthcare Holographic Comm.
  • 36. 5. Emerging Services – Beyond 4G : IoE IoT Everywhere - 5G with larger capacity can accommodate massive devices to be connected to networks - Information on things is processed with cloud and become useful for big data Information processing can be done in cloud, allowing low processing power in devices Big data from IoT
  • 37. 6. Conclusion - LTE-A commercial launch again highlights tech leadership of SK Telecom in Korea >> “The first company that comes to mind after hearing LTE is SK Telecom” - To come up with mobile data traffic explosion, SK telecom has proposed SUPER Cell, future small cell network architecture - To make more intelligent and valuable network, SK Telecom is leading a paradigm shift to software-based convergence RAN, “Service-Aware RAN” and “vRAN” - High quality multi-media services are becoming popular at 4G mobile broadband era, and 5G will bring more immersive and massive communications into reality.
  • 38. Thank You!