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A Study on Systems A Study on Systems A Study on Systems A Study on Systems Beyond IMTBeyond IMTBeyond IMTBeyond IMT----2000 in Korea2000 in Korea2000 in Korea2000 in Korea

Vice President Vice President Vice President Vice President KiKiKiKi----ChulChulChulChul Han, Ph.D Han, Ph.D Han, Ph.D Han, Ph.D ((((kchankchankchankchan@etri.re.@etri.re.@etri.re.@etri.re.krkrkrkr))))

May 28, 2002

Mobile Telecommunication Research LaboratoryMobile Telecommunication Research LaboratoryMobile Telecommunication Research LaboratoryMobile Telecommunication Research LaboratoryElectronics and Electronics and Electronics and Electronics and TelecommunciationsTelecommunciationsTelecommunciationsTelecommunciations Research InstituteResearch InstituteResearch InstituteResearch Institute

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▣ Current Status of IMT-2000 Services in Korea

▣ ETRI’s Vision for Systems beyond IMT-2000

▣ ETRI’s R&D Project on Systems beyond IMT-2000 Technologies

◈ Overview

◈ Low-tier 4G System

◈ High-tier 4G Technology

▣ Summary

Contents

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Current Status of IMT-2000 Service in Korea

▣ No. of Subscribers◈ xDSL : over 10 million (population 45 million)◈ Mobile : over 30 million (population 45 million)

▣ Commercial Service of cdma2000◈ cdma2000 1x

– 2000.10. Commercial launch on the cellular/PCS frequency bandwidth– 2001. 4. Nation-wide service– 2002. 4. 2.4 million subscribers

◈ cdma2000 1x EV-DO– 2002. 4. 1.2 million subscribers – 2002. 6. 2002 FIFA World Cup service

▣ Launching of W-CDMA◈ 2001.10. Start bench mark test◈ 2002. 6. 2002 FIFA World Cup trial service◈ 2002.11. Start commercial launch◈ 2003. Nation-wide service

2002 FIFA World Cup Stadium

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Converged IP-based Common Core Net. Converged Wire/WL Access IP-Macro Mobility Backbone IPv6, All IP

IS-95A/B/C(1x) MSC

PSTNGMSC

Integrated Packet Access Gateway

UTRAN withAll IP features

Inter system/Inter frequencyHandover

Grand InternetMedia/Signalling Gateway

cdma EV withAll IP features

IP-based Access Network

Micro-mobility/IntServ

Satellite

WLAN

Digital Audio/VideoBroadcasting

Macro/MicroHot Spots

BluetoothUWB

Wireless Local Access

Networks

ADSL

FWA

• Ubiquitous Broadband Mobile Access

ETRIETRI’’ss Vision for Systems beyond IMTVision for Systems beyond IMT--2000 (I)2000 (I)

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▣ Ubiquitous Broadband Mobile Access◈ Always Connected with Optimal Bandwidth & Cost◈ Any where, Any device, Any time, Any one, Any information

▣ Driven by Technology, Standards, Regulatory, Investment, Services and Applications

ETRI’s Vision for Systems Beyond IMT-2000 (II)

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4G VisionAdaptability Adaptability Adaptability Ubiquitous

Access Ubiquitous Ubiquitous

Access Access

Broadband Cellular

Broadband Broadband CellularCellular

ConvergenceConvergenceConvergence Packet Centric Packet Packet Centric Centric

◈ Adaptive Modulation/Coding◈ Dynamic Spectrum Assignment◈ Software Radio◈ QoS Control

◈ 100+Mbps Data Rates◈ Asymmetric Access◈ Smart Antennas Supported

◈ Streaming Audio/Video Service Supported

◈ Seamless Ubiquitous Connectivity

◈ true IP◈ Optimal Cost

◈ Wireless LAN, Fixed Wireless Access

◈ Digital Broadcasting

ETRI’s Vision for Systems Beyond IMT-2000 (III)

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▣ ETRI 4G Concept

4G4G4G4G

HighHigh--speedspeedRadio TransmissionRadio Transmission

TechnologyTechnology(high(high--tier)tier)

Hot SpotsHot SpotsMobile Mobile

TelecommunicationTelecommunicationTechnologyTechnology(low(low--tier)tier)

IP basedIP basedMobile SystemMobile System

TechnologyTechnology

RealityRealityServiceService

GenuineGenuineGenuineGenuineGeniusGeniusGeniusGenius

Global

Global

Global

Global

Genealogic

Genealogic

Genealogic

Genealogic

ETRI’s R&D Project on Systems Beyond IMT-2000 (I)

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Synchronous IMTSynchronous IMTSynchronous IMTSynchronous IMT----2000 2000 2000 2000 (ex: cdma2000 1x EV(ex: cdma2000 1x EV(ex: cdma2000 1x EV(ex: cdma2000 1x EV----DO)DO)DO)DO)

Wireless LANWireless LANWireless LANWireless LAN(ex: 802.11)(ex: 802.11)(ex: 802.11)(ex: 802.11)

Asynchronous IMTAsynchronous IMTAsynchronous IMTAsynchronous IMT----2000200020002000(ex: W(ex: W(ex: W(ex: W----CDMA Rel.6)CDMA Rel.6)CDMA Rel.6)CDMA Rel.6)

AllAllAllAll----IP basedIP basedIP basedIP basedMobile MultimediaMobile MultimediaMobile MultimediaMobile Multimedia

Core NetworkCore NetworkCore NetworkCore Network

Internet World

IPIPIPIP----based RANbased RANbased RANbased RAN(Radio Access network)(Radio Access network)(Radio Access network)(Radio Access network)

15~100 Mbps 100Mbps ~1Gbps 15~100 Mbps 100Mbps ~1Gbps 15~100 Mbps 100Mbps ~1Gbps 15~100 Mbps 100Mbps ~1Gbps Macro/Micro Cell Hot SpotsMacro/Micro Cell Hot SpotsMacro/Micro Cell Hot SpotsMacro/Micro Cell Hot Spots

Telecommunication World

4G RT Technology4G RT Technology Mobile SoftNet TechnologyMobile SoftNet Technology

Mobile AdMobile AdMobile AdMobile Ad----hoc Networkhoc Networkhoc Networkhoc Network

▣ Overview

ETRI’s R&D Project on Systems Beyond IMT-2000 (II)

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▣ High-speed Mobile Internet System (HMi) as a candidate of low-tier 4G system

▣ Basic Requirements of HMi◈ Service

– High speed Internet Access equivalent to xDSL– IP based Voice/Data Services– Streaming Video and Audio

◈ High Speed Packet Transmission – Channel adaptive variable rate : 10 Mbps ~ x100bps

◈ Interworking with 3G cellular system– Handover with 3G cellular– More enhanced mobility

◈ Cost-Quality effective solution– QoS comparable to wired network with low cost

◈ More robust against interference and tapping– Robust radio access against interference of adjacent frequency

band – Data security and authentication support

Low-tier 4G System (I)

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▣ Target of HMi◈ Provide high speed packet access with asymmetric mode which covers

high density area and metropolitan area.◈ Provide robustness against channel interferences, cellular-like cell

coverage, medium mobility, improved QoS and security◈ Maximize re-use of existing cellular infrastructure for low cost of service

Low-tier 4G System (II)

UE : User EquipmentMPDA : Mobile Packet Data AccessRTS : Radio Transceiver SystemHMi RTS : HMi cell RTSRNC : Radio access Network ControllerHRC : HMi Cell RNCCN : Core Network

Internet

CN(3GPP)

CN(3GPP2)

MPDA

RNC

HRC

RTS

HMi RTS

W-LAN

HMi CellMacro Cell

W-LAN

UE

(optional)

IMT-2000

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▣ HMi System Specification◈ Radio Access Scheme

– Carrier Frequency : 2GHz Band (2.3 or 2.5GHz Band)– Bandwidth : 10/20MHz – Duplexing : TDD(Time Division Duplexing)– Multiple Access : OFDM-TDMA/CDMA

◈ Packet Data Transmission – Data Rate : up to x100 Mbps with medium mobility– Adaptive Modulation Scheme

◈ Radio Link Protocol – HMi cellular MAC– Mobile multimedia QoS control– Handover to cdma2000 1x and WCDMA

Low-tier 4G System (III)

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▣ Target

Issues Target 2 GHz Freq. Band 3 ~ 5 GHz

Spectrum BW 5 / 10 / 20 MHz (DL) Asymmetric Band / Carrier Multiplexing

Multiple Access FDD/FDMA : Macro/Micro Cell

Service Type Packet Data Cell Type Macro/Micro & Hot Spots

Data Rate vs. Mobility 100 Mbps (Peak Aggregate Payload / Cell) at >60 km/h

High-tier 4G Radio Transmission Technology (I)

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▣ Candidate Technologies

Candidates Features Multiplexing

Multiple Access FDD/Distributed Freq-Hopping OFDMA (Macro/Micro)

- Granular Packet Transmission - Efficient Freq Diversity - Reduction of Complexity

HOM/AMC Reliable Packet Transmission under Varying Channel QPSK / 16QAM / 64QAM / 256QAM Turbo Code, LDPC

Multiple Antennas Robust Link Construction over Wireless Channel MIMO STC

H-ARQ Latency Minimization & QoS Control Chase Combining / IR

Future-Oriented UWB BLAST Etc.

High-tier 4G Radio Transmission Technology (II)

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4G Milestones & Activities

2011201020092008200720062005200420032002

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WRC06

Low-tier100Mbps HMI

2 3

2nd Phase R&D

Vision & Requirements

Future Development of

IMT-2000

Spectrum Allocation

SystemsBeyond IMT-2000 Standards Systems

Deployment

Standards Enhancements

Spectrum Identification & Implementation

Systems Deployment

High-tier Testbed100Mbps/~20MHz

High-tier EnhancementSystem Integration

1st Phase R&D

Standardization

Low-tierx100Mbps HMI

Low-tier1Gbps HMI

Initial System Deployment4G R&D

Standardization

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▣ 4G Activities in Korea◈ Korean 4G Vision Committee : Organized on March 2002◈ Beijing Mobile Communication Research Center : open on April

2002

▣ 4G R&D Directions◈ Develop low-tier technologies to support high-speed, low-cost,

hot-spot area wireless mobile internet services◈ Develop high-tier technologies to support high-speed, wide-area

wireless mobile internet services

▣ Standardization◈ De-facto◈ ITU-R/3GPP/3GPP2

Summary