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Future Architecture, Technology and Application Enablers Roadmap- 04


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Future Architecture, Technology and Application Enablers Roadmap- 04 ji yung ha

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Future Architecture, Technology and Application Enablers Roadmap- 04

  1. 1. © 2011, KT, All rights reserved
  2. 2. Jo t GS Joint GSMA-NGMN conference G co e e ce Mobile Network E l ti M bil N t k Evolution in Data Explosion Era Yung-Ha Ji, VP Mobile Network BU, KT2011. 02. 17
  3. 3. Contents 1 Market How does KT estimate Data Explosion ? Trend 2 KT’s Network Strategy - 3W+LTE for Data Capacity Network St t Strategy KT’s N t KT’ Network Design St t k D i Strategy KT’s Wi-Fi Off-loading 3 Network KT’s CCC and Virtualized-CCC LTE Evolution Effect of CCC 4 Network KT’s Service Continuity based on IMS Integration I t ti KT’s Wired and Wireless Network Convergence© 2011, KT, All rights reserved 3
  4. 4. How does KT estimate Data Explosion ? From 2009 to the end of 2010, 20 times more traffic is generated in KT WCDMA system after introduction of smart phones such as iPhone We expect to be 80 times at the end of this year and 200 times in 2015 KT has Wi-Fi offloading strategy and 3W+LTE network strategy. So, if we count the t t l d t h Wi Fi ffl di t t d t k t t S t th total data traffic, the number goes up to 1,000 times in year 2015 After the introduction of smart phones, a full-scale smart phone era has arrived and the data explosion will be accelerated. KT’s WCDMA Data x 200 Traffic Sharing Traffic Forecast LTE 12% WCDMA 21% x 80 WiMAX 12% 16M subscriber 55% Wi-Fi x 20 CS x 1.5 15 x2 PS Jan 2009 2010 2011 2015© 2011, KT, All rights reserved 4
  5. 5. KT’s Network Strategy - 3W+LTE for Data Capacity KT is transforming WCDMA network to CCC for Seoul and its vicinity - maximizing the number of cells in the unit area to maximize the capacity KT has transformed WiMAX network last year (8.75MHz -> 10MHz BW) and has nationwide coverage now. It will support MBB market’s BM and Wi Fi off-loading as Mobile Router now market s Wi-Fi off loading KT is planning to build-up 100,000 Wi-Fi zones this year and it will support maximizing Wi-Fi Off- loading in data traffic concentrated area. In 3Q 2011, we expect that virtualized-CCC LTE network will be launched in major cities to increase virtualized CCC the data capacity. Hot spot Major cities LTE • Urban area • In-building • Street Zone Wi-Fi • Virtualized CCC WCDMA (CCC) Nationwide Mobile Hot spot WiMAX WCDMA • CCC architecture hit t • Major cities/Highway • HSPA+(64QAM) • CCC architecture • Everywhere© 2011, KT, All rights reserved 5
  6. 6. KT’s Network Design Strategy For Data Capacity More than 67% of data traffic is from indoor. More than 30% of data traffic in Seoul comes from 4 hotspots indoor Kangnam Hotspot: Skyscrapers are all lined up, and data explosion occurs at quitting time 1. put in-building RU into skyscrapers 2. lit 2 split road coverage b sector as f entrance of subway/buildings d by t for t f b /b ildi 3. cover Wi-Fi street zone, in-building Wi-Fi zone for off-loading 4. change all existing repeater to RU and lower the base station site to make it small cell capacity small cell ll ll CCC N/W existing N/W g rural sub urban metro ua urban politan© 2011, KT, All rights reserved 6
  7. 7. KT’s Wi-Fi Off-loading KT developed next generation AP which covered Wi-Fi street zone and in-building Wi-Fi zone - 120 users, higher TP, larger coverage, lower price than conventional Wi-Fi 1) In-building Wi-Fi off-loading (stealth Wi-Fi): larger coverage, easy to O&M using 3G infra 2) Wi-Fi Street Zone off-loading (next generation AP): seamless H/O between APs 3) Mobile Wi-Fi off-loading (Public-Egg): subways, buses using WiMAX as a backhaul Wi-Fi Street Zone Effect of Wi-Fi Off-loading iPhone’s Wi-Fi data traffic GB/Busy-hour GB/B h 3G Data Traffic 12FA AC 4FA/3sec (3.2GB) Oct 2010 in COEX building© 2011, KT, All rights reserved 7
  8. 8. KT’s CCC and Virtualized-CCC LTE CCC(Cloud Communication Center) concept : Separation of DU-RU, Concentration of DU, and Virtualization of CCC Virtualized CCC can share the signaling data and channel information using open H/W platform with SDR technology on IA based g gy general p p purpose H/W Intel-Samsung-KT cooperation is developing virtualized-CCC LTE which is demonstrated in MWC Samsung booth and KT is trying to establish a trial network in the second half of this year CCC Architecture CCC (DU) RU Core Network WCDMA WiMAX LTE (virtualized) WiMAX networks and IP-backbone LTE IP network WCDMA Cooperation with global vendors and operators© 2011, KT, All rights reserved 8
  9. 9. Effect of CCC Under U d DE environment, the biggest concern of mobile operator i t maximize wireless network i t th bi t f bil t is to i i i l t k capacity while minimizing TCO CCC enables operators to reduce CAPEX, OPEX, Cost per Mbps and CO2 emission - cost saving such as rent and electricity, being scalable and flexible by compact-sized RU 100  100 77 38  CAPEX Legacy NW CCC NW Legacy NW CCC NW Cost Cost/ Mbps: 23% ▼ 4517  100  3558  57  OPEX CO2 emission Legacy NW CCC NW Legacy NW CCC NW 9© 2011, KT, All rights reserved ※ TCO Analysis based on KT’s CCC Trial(2009~2010)
  10. 10. KT’s Service Continuity based on IMS KT already has established VCC(Voice Call Continuity) from Wi-Fi to WCDMA using FMC(Fixed Mobile Convergence) phone We are developing a feature to secure the continuity of multimedia services, supporting mobility among 3W and LTE g As one of the solutions of Data Offloading, this project is being performed meaningfully - IMS drive and select efficient access network - A call session will be moved to any types of radio access network PDG IMS Wi-Fi LTE P-GW ACR ANDSF HSS ICS-AS WiMAX GGSN Internet WCDMA PS CSCF Remote-End CS (e)MSC ※ IMS: IP Multimedia Subsystem, PDG: Packet Data Gateway, P-GW: PDN Gateway, ACR: Access Co t o Router, CSCF: Call Session Co t o Function, HSS: Home Subscriber Se e , C ccess Control oute , CSC Ca Sess o Control u ct o , SS o e Subsc be Server, ICS-AS: IMS Centralized Service –Application Server, ANDSF: Access Network Discovery and Selection Function© 2011, KT, All rights reserved 10
  11. 11. KT’s Wired and Wireless Network Convergence KT’s network consists of 5 subsystems ’ f - Access Network, Backhaul, Control Network, Service Network and OSS Network - Control Network include Switch, IMS, Profile, Authentication, Accounting, QoS and SDP KT’s network is evolving into the integrated wired and wireless network which is suitable to g g accommodate N-Screen service and cloud service. - providing All IP based network, multiple services with different QoS requirements KT is on a convergence process to cost-efficient and simple platform Convergence Service CP Portal QooK TV CP Portal Converged Service SDP profile Auth./Acc profile Auth./Acc profile Auth./Acc ut / cc Control 3G IMS BcN IMS IMS O Soft SW Soft SW S Core Core Core Core Q QoS S Back- haul IP IP premium KORNET converged IP backbone Access WCDMA WiMAX Wi-Fi SoIP IPTV internet WCDMA LTE WiMAX Wi-Fi SoIP IPTV internet© 2011, KT, All rights reserved 11
  12. 12. Thank You!
  13. 13. Appendix: CCC concept – Analysis of BS architecture evolution Traditional BS Separated BS Soft BS Virtualized BS RF unit RF unit RF unit L1 (PHY) L1 (PHY) … RF unit L1 (PHY) L1 (PHY) CPRI IP IP L2 (MAC) L2 (MAC) L2 (MAC) L2 (MAC) L3 (RLC) L3 (RLC) L3 (RLC) L3 (RLC) FPGA ASIC Open H/W Virtual Machine Comparative analysis as the mobile operator’s point of view Average Variable Cost of NW operation g p High Low Low Very Low Value of Marginal Productivity per unit Base Station Low Medium Medium High g Scalability of Access Network Low Low Medium High Flexibility of Deployment and Radio Resource Management y p y g Low Medium High High© 2011, KT, All rights reserved 13
  14. 14. © 2011, KT, All rights reserved