中国联通技术发展战略

1. 中国联通技术发展战略 China Unicom CDMA2000 Evolution Perspectives Jin Mingye Jinmy@chinaunicom.com.cn June 2005

2. Outlines Network Overview CDMA2000 evolution perspectives

3. Outlines Network Overview Mobile Network Fixed Network Fixed & Mobile Convergence CDMA2000 evolution perspectives

4. MAP GSM-MAPCore Network ISUP GSM RAN AuC SMSC Abis A A PSTN/PLMN MAP BTS HLR Billing / OHS MSC/GMSC BSC ISUP teminal GSM &CDMA2000 1x MAP G&C GW CDMA-MAPCore Network MAP CDMA RAN AuC SMSC Abis GSM Internet/ Intranet CDMA2000 1X BTS MSC/GMSC BSC Convergence Element HLR Billing / OHS AAA PDSN Mobile network overview -GSM and CDMA are operated together

5. Mobile network evolution • CDMA 1XEV-DO(Rev.0-Rev.A) • Network Trials: technical trial, commercial trial • Terminal Preparation : R-UIMs support, access authentication based on R-UIM • Service Preparative : service development, 1x service migration, video telephony • Standards Preparation: technology research and international standardization

6. Hot issues • IMS-based CN convergence -unified architecture and mechanisms for different access networks and different services - 3GPP2 Standardization as soon as possible • VT • Representative 3G service • 3GPP2 Standardization Target Q3 2005 • Active Inter-ANC/PCF handoff • Enhance Inter-vendor handoff performance of real-time applications • 3GPP2 Standardization Target Q4 2005 • 3G 1X and EV-DO inter-operability

7. Outlines • Network Overview and evolution strategy • Mobile Network • Fixed Network • Fixed & Mobile Convergence • CDMA2000 evolution perspectives

8. IP telephone service network (VoIP) Wide-band video conference network (VC) Long-distant telephone network Internet (165 network) (193) Data backbone network（ATM+IP+MPLS) Transport network (DWDM+SDH) Fixed network overview

9. Technology Preparation • Multiservices UniNetworks Platform(Uninet)： • ATM+IP+MPLS • Multiple services On one backbone Network • Softswitch Trial：In Six Branches • Networks：In NGN Architecture • Services：Provide traditional and new services • China Next Generation Internet（CNGI）:In Seven Cities • IPv6 Trials • Explore Next generation Development Model

10. Fix network evolution Actively evolve to NGN • Large scale soft-switching technical trial shows that soft switching based NGN is successful, and migration and development of telecom services are achieved • China Next Generation Internet (CNGI) and IPv6 related technologies, services and operation model to reach the evolution of China Unicom Internet

11. Outlines • Network Overview and evolution strategy • Mobile Network • Fixed Network • Fixed & Mobile Convergence • CDMA2000 evolution perspectives

12. Fixed &Mobile Convergence • Push fixed and mobile networks convergence • Layer-based convergence • Service application——unified mobile/fixed service platform • Core control——unified soft-switching architecture • transport network——unified packet (IP) bearer platform • Integrated access network——basis of implementation of converged NGN

13. Fixed &Mobile Convergence IN, OSA/Parlay, APP Server Service Platform IMS CSCF Core Network MGCF AAA ATM/IP Networks PDSN IP MGW TDM WLAN Fixed Mobile SIP Signaling (IMS)

14. Outlines • Network Overview and evolution strategy • CDMA2000 evolution perspectives • Goals • RAN • CN

15. Driver of evolution • Market pressure • 3GPP evolution • Although cdma2000 is time-to-market leading now, it will face the threat from HSDPA/UPA in the near future • 3GPP has set up LTE study item • WiFi/WiMax performance claims • User services demands • Voice performance can compare to that of fixed network • Efficiently support various multi-media services • New technology pressure • OFDM, MIMO… To ensure competitiveness in an even longer time frame in 3G and beyond 3G market, a clear and aggressive evolution path is required

16. Evolution goals • Better User experiences • Support various services from PS domain • QoS support • Cost effective and smooth migration • Reduce cost per bit • Reduce CAPEX and OPEX including backhaul • Protect existing RAN investment • Quick and simple deployment to gain early market share • Backwards compatibility • Highly desirable • balance of complexity and capabilities

17. Evolution goals • Inter-working with existing 3G systems & non-3G systems • Handover between different Air interfaces • Core network interworking and convergence • International and inter-system roaming for both voice and data should be supported and enhanced • Reasonable system and terminal complexity, cost and power consumption

18. Evolution goals • Support UIM-based technology • Open and simplified interfaces • Independence of CN evolution and RAN evolution

19. Outlines • Network Overview and evolution strategy • CDMA2000 evolution perspectives • Goals • RAN • CN

20. Performance Requirement (1) • 3GPP “Evolved UTRA and UTRAN” Target • Data rate • Downlink peak data rate over 100Mbps/20MHz • Uplink peak data rate over 50Mbps/20MHz • Higher user throughput e.g. 2-4 times DO Rev.A per carrier • Higher “cell edge bit-rate” • RAN latency • Less data call setup and shorter round-trip time • Capacity • Improve system capacity for QoS-constrained applications, e.g. VT

21. Performance Requirement (2) • Spectrum Efficiency • Significantly improved, e.g. 3-5 times DO Rev.A • Bandwidths and spectrum allocation • Flexible bandwidths ranging from 1.25 to 20MHz • Possibility of asymmetrical and non-contiguous downlink/uplink spectrum allocation to one terminal • Mobility • Support medium and high speed mobility (e.g. high-speed train) • Security • Appropriate security level with reasonable complexity

22. Evolution paths • Near-term • Multi-Carrier HRPD by software upgrades to compete to compete with HSDPA/HSUPA peak-rate • Middle & Long-term • To reach expected performances to compete with evolved 3GPP Air Interface and WiFi/WiMax • “Enhanced cdma2000” with new technologies, e.g.OFDM,MIMO etc. • Support enhanced IMS • Backwards compatibility is one of key consideration

23. Time Frame for RAN Evolution • Required timing of 3GPP2 evolution standards/product with respect to countering 3GPP & WiMax offerings • study near-term and Middle/long-term evolution paths • Near term • Target standardization by Q2 2006 • Middle/long term • Requirement Definition by Q4 2005 • Target standardization by Q4 2006

24. 3GPP2 procedure • 3GPP2 specification development should also address issues related to market timing window by streamlining and implementing the most efficient working procedures in 3GPP2 in order to be highly responsive

25. Outlines • Network Overview and evolution strategy • CDMA2000 evolution perspectives • Goals and stage • RAN • CN

26. CN Status quo: For different systems, core network architecture and protocol are different, e.g. PSTN, mobile: GSM,CDMA 1X EvolutionRequirement: Lower cost , less complexity, simplified operation ; Goals: converged core network with support for multiple access networks

27. Next generation CN A common IP multimedia platform (e.g.IMS ) can be used for converging different next generation CN 3gpp——IMS 3gpp2——MMD/IMS FGNGN/ETSI——IMS-domain/subsystem

28. IMS-based CN convergence 3GPP/3GPP2 IMS convergence requirements -Architecture harmonization -Interface and protocol simplification and coordination -QoS mapping and end-to-end QoS realization -Service-based bearer control -online and offline, flow-based charging -security (IPSec or any other option) Store security and subscription information in R-UIM for IMS Interworking with existing network

29. 3GPP2 procedure Long term evolution goal and specific plan Influent 3GPP work on common issues Closer co-operation with ITU-T/ETSI

30. Phases for CN evolution Near-term PP/PP2 IMS interworking and convergence IPv4 / IPv6 Middle & Long-term Fixed & Mobile Convergence Service plane control plane bearer plane IPv6

31. Thanks！