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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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