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Convergence of Wireless Access and Spectrum Allocations Mar. 19, 2001 a Network Insight seminar, Sydney Seungtaik Yang Preisident, Information and Communications.

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Presentation on theme: "Convergence of Wireless Access and Spectrum Allocations Mar. 19, 2001 a Network Insight seminar, Sydney Seungtaik Yang Preisident, Information and Communications."— Presentation transcript:


2 Convergence of Wireless Access and Spectrum Allocations Mar. 19, 2001 a Network Insight seminar, Sydney Seungtaik Yang Preisident, Information and Communications University P.O. Box 77 Yuseong, Daejon, KOREA e-mail:

3 Contents  Directions to Wireless Multimedia Era  Prospects for the Future Mobile Communications  Requirement for Future Spectrum Management  Korean Perspectives on Spectrum Management  Final Remarks

4 Directions to Wireless Multimedia Era  Evolution of Mobile Communications ‘80 1st Generation CT-1 CT-2 DECT AMPS NMT TACS GSM ADC(IS-54) PDC IS-95 DCS1800 IS-54 based PCS Upband IS-95 PCS(CDMA) PHS Satellite GMPCS Cordless Telephone Analog Cellular Digital Cellular PCS IMT-2000 - W-CDMA - cdma2000 Mobile Multimedia ‘90 2nd Generation 2000 3rd Generation 2010 (?) 4th Generation CDMA Data Rate8 kbps8 - 114 kbpsUp to 2 MbpsOver 2 Mbps

5 (year) 19881992 199620002004 Subscribers (Million) 600 400 200 0 800 1,000 Communication Traffic (arb. unit) Man-Man Comm. InformationExplosion 2008 600 400 200 0 800 1,000 Telephone Internet Next Gen.Internet Mobile Cellular, PCS Broadband Mobile IMT-2000, B-WLL Cyber Network Machine-Machi ne Comm. Traffic Increase in 21 Century (Bandwidth Explosion)

6 IMT-2000 Service Coverage 9.6 kbps < 144 kbps < 384 kbps < 2 Mbps remote vehicular pedestrian stationary/indoor

7 IMT-2000 Services  Services : Voice, Data, Video,& Multimedia as Mobile Internet Data Base Access IPS e-mail Voice 10 kbps100 kbps1 Mbps10 Mbps Service Data Rate Telebanking Electronic Newspaper, Data Service(Image,Music) Teleshopping Video Telephony Video Conference

8 Prospects for the Future Mobile Communications  As voice is concerned, “anywhere access” is fully realized with 2-G mobiles, PABX phones, and cordless telephones.  As we enter into knowledge-based information society at the turn of the century, main focus on communication is being shifted towards ubiquitous high speed wireless multimedia/internet. “Anywhere access for data” will be the major topics for the next generation mobile systems like IMT- 2000.  But, nobody is sure how much high speed data services will be needed when one is on move. While it is feasible to predict the ever-growing needs for high speed data, wherever one is located stationary. Mobility on fixed network is as important as that on mobile network.

9 Converging Wireless Access as Last Mile Access  Public Land Mobile Systems like 2-G and 3-G :  Advantage : “wherever service” possible  Disadvantage : limited data speed and capacity, and relatively high tariffs  No tariffs and high data speed  Broadband Wireless LAN *: within campus or large premise, and offices  Home R.F.* or Personal LAN like Bluetooth : at home or on personal move  SRD (Short Range Communication Device)  Low Tariffs and high data speed, where the fixed system is not conveniently accessible  Broadband Fixed Wireless Access*  Broadband Satellite Internet Service*  Low tariffs and very high data speed  SCS (Stratospheric Communication System)* * possible application of microwave and mm-wave technology

10 Satellite WirelessDigitalConvergence HAPS DVB GPRS WPAN W-CDMA Satellite/HAP S Broadcasting Cellular Indoors BWA Wireless Local Loop HIPERLAN W-LAN Wireless1394 CDMA2000 PCS 4G as the Integration GSM DAB IS-95 Broadband W-LAN LMDS Bluetooth WLAN MMDS IPv6 SDR

11 Global layer Macro layer Micro layer Satellite, HAPS / DVB, DAB IMT2000 Pico layer fixed (wired)layer All-IP Network WPAN Bluetooth Wireless 1394 WLANHIPERLAN CDMA2000 WCDMA CDMAGSMPCS Global Outdoor Mobile / still / fixed Coverage :100Km ~ Max. Data rate : ~155Mbps L,S,C,Ku,Ka, mm Wave band Cellular / Macro Outdoor /Indoor Mobile / still Coverage : ~ 3Km Max. Data rate : ~2Mbps 800MHz ~ 2GHz Wireless LAN / Micro Outdoor / Indoor Still / fixed Coverage : ~ 300M Max. Data rate : ~ 54Mbps 2.4GHz ~ 5.8GHz Wireless PAN / Pico Indoor Still / fixed Coverage : ~ 10M Max. Data rate : ~1Mbps 2.4GHz Broadband Wireless Access Outdoor Fixed Coverage : ~ 12.5Km Max. Data rate : ~155Mbps 20GHz ~ 60GHz (mm Wave band) BWA LMDS MMDS Hierarchical Layered Convergence handover

12 Converging Stage of Various Wireless Access in the Future OutDoorOutDoor InDoorInDoor Vehicle Pede- strian Still Fixed Still 0.1 1 10 100 Data Rate(Mbits/sec) Converging Stage System Beyond IMT-2000 Wireless LAN LMDS Wireless PAN IMT-2000 Phase2 IMT-2000 Phase1 Broadband/Satellite Wireless Access Ultra High Speed WLAN Wired Line Wireless LAN

13 Requirements for Next Generation(4-G) System  High speed data rate :  Vehicular : 2 Mbps  Pedestrian/ Indoor : 20 Mbps  IP based network structure : QoS guaranteed  Next generation Internet support : IPv6, Mobile IP  High Capacity : 5 ~ 10 times to 3-G  Lower system cost  Seamless services with fixed, and private networks like Wireless LAN, BWA etc.  Frequency band : 3 ~ 8 GHz, possibly higher  Frequency Spectrum Requirements :  ITU-R recommends additional 180 MHz bands for IMT-2000 services by 2010.  For 4-G, conservative estimates is at least 1,000 MHz by 2015

14 Requirement for Future Spectrum Management  Facing More and More Complications  Ever Increasing Demands and Values for Frequency Spectrum  Convergence of Diverse Services Differentiation among Services or Systems ambiguous Especially for the 4-G Services  Appearance of New Unpredicted Services Flexibility of Spectrum Use needed  Globalization and De-regularization Trends  Need of Long-and–Medium Term Frequency Spectrum Planning

15 Korean Perspectives on Spectrum Management

16 Status of Telecommunications in Korea Population : 46 Millions / 99,300 sq. km Seoul : 11.0 Millions / 605 sq. km Pusan : 4.0 Millions / 436 sq. km Status of Telecommunications - Wireline Operators : KT (Korea Telecom) : Major PTT, IMT-2000 DACOM : PSDN, International & Long Distance Hanaro : Local Loops, WLL Onse Telecom : International & Long Distance - Wireless Operators : SK Telecom : Cellular, IMT-2000 Shinsegi Telecom : Cellular KT Freetel, & LG Telecom : PCS 8 Regional Pager Operators : Pager TRS Operators ( 2 national, and 9 regional) : Digital TRS 3 Mobile Data Operators : Wireless Data Regulator : MIC ( Ministry of Information & Communication )

17 Cellular & PCS Subscribers in Korea

18 MIC’s Policy on Spectrum Management  Provision of Spectrum Resources for Future Demands  Technology Development and Incentive to Utilize for Higher Frequency Bands like Millimeter-wave Band  Publishing Long-term Frequency Planning  Efficiency Spectrum Utilization for Existing Bands of Use Narrower Channel Bandwidth Frequency Spectrum Sharing for Different Services Trunking for Similar Services from Different Entities/Organizations Clean Electromagnetic Environment

19  Maximization of Spectrum Resource Utilization  Improvement of Spectrum Allocation Method Adoption of Global Standards or Trends in Spectrum Allotment Spectrum Reassignment through Actual Frequency Usage Statistics Spectrum Allocation by Market-based Mechanism  Public Access to Current Frequency Database  Electronic Filing System for Procedure of Radio Station Licensing

20 Current Spectrum Allocations Policy 1.Appraisal of Proposals with Pre-fixed Pricing (hybrid form)  Based on Economic Values and Technical Effectiveness  Existing Competitions in the Market  Needs for Accelerating Commercial Services  Price Range Pre-fixed, and Fund Contributed for Telecommunication Development  Exclusive Right to Use for Specific Services, and Renewable with Additional Prices after Licensing Period of less than 20 yrs

21 2.Allocation by Conventional Review Process with No Price  Based on Effectiveness of Intended Spectrum Use  Fairness and Conformity to Public Interest  Needs of Applicants  Technical and Financial Capabilities of Applicants 3.Spectrum Auction (X)  Once considered, but discarded due to negative reactions of general public, and many other adverse effects

22 Status of Hot Service Licensing's  IMT-2000 Services ( Method 1)  Will license 3 Operators, each with 2*20 MHz Duplex Bands 1 for cdma2000 system, 1 for W-CDMA system, and 1 with option to take either Telecom. Development Fund ranged between 1 billon ~ 1.1 billion US$ Commercial Services due by May, 2,002, but possibilities of delay  Result among 4 Applicants: ( Dec., 2,000) - 2 W-CDMA Licenses to SK Telecom and KT, with fund of 1.1 billion US$, each 1.1 billion US$, each - a cdma2000 applicant disqualified, and procedure postponed postponed

23  Digital Terrestrial Broadcasting Services (method 2)  ATSC standard adopted in 1997  Test Transmitting during 1999 ~ 2000, and at present, Trial Services in Seoul  Full Commercial on-air in late this year beginning from Seoul  Incumbent TV Broadcasters provided with Digital Channels on condition that after 2,006, returning existing analog channels  Satellite Broadcasting Service (method 1)  1 license on Platform of KoreaSat II and III Broadcasting Development Fund fixed at 17 million US$ Administered by Independent Broadcasting Commission  Result among 2 Applicants : (Dec., 2,000) KT/KBS Consortium to be licensed with 17 million $ fund

24 2.16G-2.2G Cellular 824M-894M CT 894M-960 M GMPCS 1.53G-1.66G PCS 1.71G -1.885G IMT2000 (Uplink) 1.90G -1.92G - 1.98G IMT2000 (MSS uplink) 1.98G-2.02G-2.025G IMT2000 (Downlink) 2.11G - 2.17G IMT2000 (MSS Downlink) WLAN (802.11b Bluetooth) 2.4G-2.48G IMT2000 (New) 2.5G-2.69G IMT2000 (New) 2.7G-2.9G WLAN (HIPER LAN/1) WLAN (HIPER LAN/2) WLAN (802.11a) HIPER LINK WLAN (reserved) 17.1G - 17.3G 17.7G-17.735G 5.15G-5.35G 5.47G-5.725G 5.725G-5.875G GMPCSWLL 2.3G-2.4G BWLL 24.25G-26.7G Sat. TV (Korea) 11.7G-12.2G 10G WLAN (reserved) 19.2G-19.3G WATM (project) 40G-60G 2.17G-2.2G (TDD) Frequency Allocation in Korea 4G ? 3G

25 Final Remarks  Each country has its own regulation and customs for frequency allocation, but globalization and roaming requirements ask for more conformance to global standards.  As demands for frequency use accelerated, harmful interference may occur between neighboring countries unless close frequency planning coordination worked out.  As more diverse services merged vertically or horizontally, spectrum management becomes more complicated. The worldwide study is required to resolve.  Perhaps, economic values of spectrum use may be deemed differently from country to country. Trend is to levy some price tags.  Spectrum cap or specific use of certain bands will be removed for improving flexibility of spectrum utilization.

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