1 中国联通技术发展战略 china unicom cdma2000 evolution perspectives jin mingye...
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中国联通技术发展战略China Unicom China Unicom CDMA2000 Evolution CDMA2000 Evolution
PerspectivesPerspectives
Jin MingyeJin MingyeJinmy@chinaunicom.com.cnJinmy@chinaunicom.com.cn
June 2005June 2005
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OutlinesOutlines
Network Overview
CDMA2000 evolution perspectives
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OutlinesOutlines
Network Overview
Mobile Network
Fixed Network
Fixed & Mobile Convergence
CDMA2000 evolution perspectives
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AAbis
BSC BTS
GSM RAN
MSC/GMSC
ISUP
ISUP
PSTN/PLMNPSTN/PLMNGSM &
CDMA2000 1x
teminal
GSM-MAPCore Network
Billing / OHS
SMSCAuC
HLR
CDMA-MAPCore Network
Billing / OHS
SMSCAuC
HLR
Abis
BSC BTS
CDMA RAN
MAP
MAP
AAA
A
MSC/GMSC
PDSN
MAP
G&C
GW
MAP
Internet/Intranet
Internet/Intranet
GSMCDMA2000 1XConvergence Element
Mobile network overviewMobile network overview
-GSM and CDMA are operated together
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Mobile network evolutionMobile network evolution
• CDMA 1XEV-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
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Hot issuesHot issues• IMS-based CN convergence IMS-based CN convergence
--unified architecture and mechanisms for different access networks and different services - 3GPP2 Standardization as soon as possible
• VTVT– Representative 3G service– 3GPP2 Standardization Target Q3 2005
• Active Inter-ANC/PCF handoffActive Inter-ANC/PCF handoff– Enhance Inter-vendor handoff performance of real-time applications– 3GPP2 Standardization Target Q4 2005
• 3G 1X and EV-DO inter-operability3G 1X and EV-DO inter-operability
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OutlinesOutlines
Network Overview and evolution strategy
Mobile Network
Fixed Network
Fixed & Mobile Convergence
CDMA2000 evolution perspectives
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Fixed network overviewFixed network overview
Transport network (DWDM+SDH)
Data backbone
network ( ATM+IP+MPLS)
IP telephone
service netw
ork (VoIP)Internet
(165 network)
Wide-band
video
conference
network (VC)
(193)
Long-distant
telephone network
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Technology PreparationTechnology 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
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Fix network evolutionFix 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
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OutlinesOutlines
Network Overview and evolution strategy
Mobile Network
Fixed Network
Fixed & Mobile Convergence
CDMA2000 evolution perspectives
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FFixed &ixed &MMobile obile CConvergenceonvergence
• 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
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IN, OSA/Parlay, APP Server
MGCF
CSCF
MGW
IMS
AAA
ATM/IP Networks
TDM
IP
SIP Signaling (IMS)
Core Network
Service Platform
PDSN
FixedWLANMobile
Fixed &Mobile ConvergenceFixed &Mobile Convergence
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OutlinesOutlines
Network Overview and evolution
strategy
CDMA2000 evolution perspectives
Goals
RAN
CN
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Driver of evolutionDriver 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…
• 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
To ensure competitiveness in an even longer time frame in 3G and beyond 3G market,
a clear and aggressive evolution path is required
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Evolution goalsEvolution 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
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Evolution goalsEvolution 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
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Evolution goalsEvolution goals
• Support UIM-based technology • Open and simplified interfaces
• Independence of CN evolution and RAN evolution
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OutlinesOutlines
Network Overview and evolution
strategy
CDMA2000 evolution perspectives
Goals
RAN
CN
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Performance Requirement (1)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
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Performance Requirement (2)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
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Evolution pathsEvolution paths
• Near-term– Multi-Carrier HRPD by software upgrades to compet
e 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
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Time Frame for RAN EvolutionTime 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
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3GPP2 procedure3GPP2 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
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OutlinesOutlines
Network Overview and evolution
strategy
CDMA2000 evolution perspectives
Goals and stage
RAN
CN
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CNCN
Status quo:
For different systems, core network architecture and protocol are For different systems, core network architecture and protocol are
different, e.g. PSTN, mobile: GSM,CDMA 1Xdifferent, e.g. PSTN, mobile: GSM,CDMA 1X
Evolution Requirement:
Lower cost , less complexity, simplified operation ;Lower cost , less complexity, simplified operation ;
Goals:
converged core network with support for multiple access networksconverged core network with support for multiple access networks
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Next generation CNNext generation CN
A common IP multimedia platform (e.g.IMS ) can be
used for converging different next generation CN
3gpp——IMS3gpp——IMS
3gpp2——MMD/IMS3gpp2——MMD/IMS
FGNGN/ETSI——IMS-domain/subsystemFGNGN/ETSI——IMS-domain/subsystem
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IMS-based CN convergenceIMS-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 IM
S
Interworking with existing network
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3GPP2 procedure3GPP2 procedure
• Long term evolution goal and specific plan• Influent 3GPP work on common issues• Closer co-operation with ITU-T/ETSI
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Phases for CN evolutionPhases 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
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ThanksThanks!!
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