A Study on Systems Beyond IMT-2000 in Korea
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1 A Study on Systems Beyond IMT-2000 in Korea May 28, 2002 Vice President Ki-Chul Han, Ph.D kr) Mobile Telecommunication Research Laboratory Electronics and Telecommunciations Research Institute 0
2 Contents 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 1
3 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 cdma FIFA World Cup Stadium cdma2000 1x Commercial launch on the cellular/pcs frequency bandwidth Nation-wide service million subscribers cdma2000 1x EV-DO million subscribers FIFA World Cup service Launching of W-CDMA Start bench mark test FIFA World Cup trial service Start commercial launch Nation-wide service 2
4 ETRI s Vision for Systems beyond IMT-2000 (I) Ubiquitous Broadband Mobile Access GMSC IS-95A/B/C(1x) PSTN MSC Integrated Packet Access Gateway Media/ Signalling Gateway Satellite Grand Internet Converged IP-based Common Core Net. Converged Wire/WL Access IP-Macro Mobility Backbone IPv6, All IP IP-based Access Network Micro-mobility/IntServ Digital Audio/Video Broadcasting WLAN Bluetooth UWB FWA Wireless Local Access Networks cdma EV with All IP features Inter system/ Inter frequency Handover UTRAN with All IP features Macro/Micro Hot Spots ADSL 3
5 ETRI s Vision for Systems Beyond IMT-2000 (II) 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 4
6 ETRI s Vision for Systems Beyond IMT-2000 (III) Broadband Cellular 100+Mbps Data Rates Asymmetric Access Smart Antennas Supported Streaming Audio/Video Service Supported Seamless Ubiquitous Connectivity Ubiquitous Access Wireless LAN, Fixed Wireless Access Digital Broadcasting Convergence 4G Vision Adaptability Adaptive Modulation/Coding Dynamic Spectrum Assignment Software Radio QoS Control Packet Centric true IP Optimal Cost 5
7 ETRI s R&D Project on Systems Beyond IMT-2000 (I) ETRI 4G Concept High-speed Radio Transmission Technology (high-tier) Genius IP based Mobile System Technology Global Genealogic 4G Hot Spots Mobile Telecommunication Technology (low-tier) Genuine Reality Service 6
8 ETRI s R&D Project on Systems Beyond IMT-2000 (II) Overview Asynchronous IMT-2000 (ex: W-CDMA Rel.6) 15~100 Mbps 100Mbps ~1Gbps Macro/Micro Cell Hot Spots IP-based RAN Mobile Ad-hoc Network (Radio Access network) All-IP based Mobile Multimedia Core Network Telecommunication World Synchronous IMT-2000 (ex: cdma2000 1x EV-DO) Wireless LAN (ex: ) Internet World 4G 4G RT RT Technology Mobile SoftNet Technology 7
9 Low-tier 4G System (I) 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 8
10 Low-tier 4G System (II) 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 UE CN(3GPP) RTS RNC CN(3GPP2) Internet MPDA W-LAN HMi RTS HRC (optional) IMT-2000 Macro Cell HMi Cell UE : User Equipment MPDA : Mobile Packet Data Access RTS : Radio Transceiver System HMi RTS : HMi cell RTS RNC : Radio access Network Controller HRC : HMi Cell RNC CN : Core Network W-LAN 9
11 Low-tier 4G System (III) 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 10
12 High-tier 4G Radio Transmission Technology (I) Target Issues Target Freq. Band Spectrum BW Multiplexing Multiple Access Service Type Cell Type 2 GHz 3 ~ 5 GHz 5 / 10 / 20 MHz (DL) Asymmetric Band / Carrier FDD/FDMA : Macro/Micro Cell Packet Data Macro/Micro & Hot Spots Data Rate vs. Mobility 100 Mbps (Peak Aggregate Payload / Cell) at >60 km/h 11
13 High-tier 4G Radio Transmission Technology (II) Candidate Technologies Candidates Multiplexing Multiple Access Features 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. 12
14 4G Milestones & Activities Spectrum Allocation Systems Beyond IMT-2000 Vision & Requirements WRC06 Standards Systems Deployment Future Development of IMT-2000 Spectrum Identification & Implementation Standards Enhancements Systems Deployment 1st Phase R&D 2nd Phase R&D Standardization Standardization 4G R&D High-tier Testbed 100Mbps/~20MHz High-tier Enhancement System Integration Initial System Deployment Low-tier 100Mbps HMI Low-tier x100mbps HMI Low-tier 1Gbps HMI 13
15 Summary 4G Activities in Korea Korean 4G Vision Committee : Organized on March 2002 Beijing Mobile Communication Research Center : open on April G 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 14
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