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:
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: firstname.lastname@example.org
Contents Directions to Wireless Multimedia Era Prospects for the Future Mobile Communications Requirement for Future Spectrum Management Korean Perspectives on Spectrum Management Final Remarks
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
(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)
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
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.
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
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
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
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
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
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
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, KTM.com & 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 )
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
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
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
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
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
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
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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