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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 (((([email protected][email protected][email protected][email protected]))))
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
1
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
