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Réseaux et Télécommunications 3 - Introduction aux réseaux cellulaires Edoardo Berera Telelinea.

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Presentation on theme: "Réseaux et Télécommunications 3 - Introduction aux réseaux cellulaires Edoardo Berera Telelinea."— Presentation transcript:

1 Réseaux et Télécommunications 3 - Introduction aux réseaux cellulaires Edoardo Berera Telelinea

2 Plan Intelligent Network Digital cellular networks Generations of mobile communications GSM –Global System for Mobile Communication GSM evolution –GPRS General Packet Radio Service –UMTS Universal Mobile Telecommunications Service Data services –WAP Wireless Application Protocol –i-mode (internet mode) Frequency bands Layered architectures Key technologies Operators

3 PSTN / Intelligent Network (IN) Source: Modarressi, BellSouth and Mohan, Comverse (IEEE Communications, Oct. 2000, p. 96) Les trois niveaux de l’architecture des réseaux téléphoniques: –transport –signalisation –services intelligents (ordinateurs, bases de données et applications)

4 Digital Cellular Networks Source: Oliphant, IFR (IEEE Spectrum, Aug. 1999, p. 21) Les réseaux cellulaires sont une extension des réseaux de téléphonie fixe –grâce aux services intelligents fournis par les –HLR, Home Location Registers, et les VLR, Visitor Location Registers

5 Digital Cellular Networks Source: Oliphant, IFR (IEEE Spectrum, Aug. 1999, p. 21) PSTN Public Switched Telephone System Services –Authentication Center (vérification abonné) –Home Location Register (données abonné) –Visitor Location Register (localisation abonné) –Operations & Maintenance Center (réseau) Commutation –Mobile Switching Center –Gateway Mobile Switching Center (i/f réseau fixe) Concentrateurs et émetteurs/récepteurs radio –Base Station Controller –Base Transceiver Station Interfaces –Air Interface (radio), interfaces MSC/BSC/BTS (A, Abis) Téléphone cellulaire –Mobile Station

6 Source: Lei and Slimane, Swedish Royal Institute of Technology (IEEE Communications, Oct. 2000, p. 87) Multiple frequency allocation En 2ème génération (GSM) séparation par fréquence (FDM Frequency Division Multiplexing) En 3ème génération (G3, UMTS) séparation par codage ( CDM Code Division Multiplexing)

7 Source: Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 135) Generations of mobile communications systems GSM: Global System for Mobile communications Recherchez les autres acronymes sur Internet

8 Source: Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 134) Mobility and data rates

9 Source: Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 138) Future-generation mobile communications

10 Source: Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 139)Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 139) Intelligent Transport System (ITS) communications

11 Source: Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 139)Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 139) High Altitude stratospheric Platform Station (HAPS)

12 Source: Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 123)Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 123) GSM evolution : toward the third generation (3G) HSCSD High Speed Circuit Switched Data GPRS General Packet Radio Service EDGE Enhanced Data rate for Global (GSM) Evolution

13 Electromagnetic Spectrum Source: Microsoft Corp.

14 Extremely Low Very Low MediumHighVery High Ultra High Super High InfraredVisible Light Ultra- violet X-Rays Audio AM Broadcast Short Wave RadioFM Broadcast Television Infrared wireless LAN 902 - 928 MHz 26 MHz Cellular (840MHz) NPCS (1.9GHz) 2.4 - 2.4835 GHz 83.5 MHz (IEEE 802.11) 5 GHz (IEEE 802.11) HyperLAN HyperLAN2 Source: Chuck Bartel, Carnegie-Mellon University, “Wireless Technologies, Directions in Wireless Networking”, April 2001 Frequency Bands - ISM Industrial, Scientific, and Medical (ISM) bands Unlicensed (free) channel bandwidth

15 Source: Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 126)Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 126) New frequency ranges

16 International frequency allocation Source: Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 127)Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 127) Différences entre Europe USA et Japon Place très importante allouée par les USA aux transmission sans licence –Quelles sont les conséquences pour les industriels ?

17 Layered structure of seamless future networks Source: Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 130)Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 130) Les Hot Spots (terminaux des aéroports, centres de congrès, et un jour peut-être stations-service, etc.) utilisent Wi-Fi Comparez les hot spots Wi-Fi et les services UMTS (G3)

18 Source: Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 141)Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 141) Key technologies in wireless access networks

19 Source: Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 141)Ohmori, MPT Japan, Yamao and Nakajima, NTT (IEEE Communications, Dec. 2000, p. 141) Cellular system software architecture

20 GPRS UMTS Universal coverage IMT-2000 UMTS terminals Standards GSM to UMTS transition GPRS Network operators Service providers

21 Universal coverage Source: UMTS Forum

22 ITU IMT-2000 UMTS is one of the major new third generation mobile communications systems being developed within the framework which has been defined by the International Telecommunications Union (ITU) and known as IMT-2000 for International Mobile Telecommunications for the 2000's.. UMTS will deliver low-cost, high-capacity mobile communications offering data rates up to 2Mbit/sec with global roaming and other advanced capabilities

23 UMTS Terminals –Video Phones –PDA –Pocket PC –Portable PC –Wrist watches –Music players –E-book readers –... Source: UMTS Forum

24 Market and services UMTS will play a key role in creating the future mass market for high-quality wireless multimedia communications that will approach 2 billion users worldwide by the year 2010  UMTS will enable tomorrow’s wireless Information Society, delivering high-value broadband information, commerce and entertainment services to mobile users via fixed, wireless and satellite networks  UMTS will speed convergence between telecommunications, IT, media and content industries to deliver new services and create fresh revenue-generating opportunities

25 Universal standards ? Two US standards –CDMA2000 Code Division Multiple Access –UWC-136 Universal Wireless Comms Rest of the world –WCDMA Wideband CDMA Source: Oliphant, Tektronix (IEEE Spectrum, Oct. 2000, p. 55)Oliphant, Tektronix (IEEE Spectrum, Oct. 2000, p. 55)

26 GSM to UMTS network transition Step 0: GSM (2G) –Circuit switched network (Voice and Data) Source: Oliphant, Tektronix (IEEE Spectrum, Oct. 2000, p. 56)Oliphant, Tektronix (IEEE Spectrum, Oct. 2000, p. 56)

27 GSM to UMTS network transition Step 1: GSM (2.5G) –+ GPRS General Packet Radio Service »Circuit switched network (Voice) »Packet switched network (Data): 92 kb/s max (plus data compression) –+ EDGE Enhanced Data rate for GSM/Global Evolution »Circuit switched network (Voice) »Packet switched network (Data): 384 kb/s max (plus data compression)

28 GPRS General Packet Radio Service –PCU Packet Control Unit –GPRS Internet Gateway Source: Oliphant, Tektronix (IEEE Spectrum, Oct. 2000, p. 56)Oliphant, Tektronix (IEEE Spectrum, Oct. 2000, p. 56)

29 UMTS Phases Step 2: UMTS (3G) Phase 1 –Circuit switched network (Voice) –Packet switched network (Data) »2 Mb/s max (plus data compression) Step 3: UMTS (3G) Phase 2  Packet switched network (Voice and Data)  All IP network (Internet)

30 UMTS Phase 1 Source: Oliphant, Tektronix (IEEE Spectrum, Oct. 2000, p. 56)Oliphant, Tektronix (IEEE Spectrum, Oct. 2000, p. 56) UTRAN –UMTS Terrestrial Radio Access Network –Urban areas coverage –Dual mode phones Non IP core network

31 UMTS Phase 2 IP-based core network Satellite universal coverage Source: Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 129)

32 WAP Wireless Application Protocol Terminals WAP Gateways Wireless Markup Language Services

33 System Elements Mobile Terminals –SIM Cards Cellular Networks –Gateways Protocols Languages Services Nokia 9210 Communicator

34 Terminals Cellular Phones –SIM Card Subscriber Identity Module Authentication Security Personalisation –SIM Toolkit Personal Digital Assistants Combined PDA/Cellphones

35 WAP Gateway Source: Neal Leavitt, Leavitt Communications (© IEEE Computer, Dec. 2000, p. 128)

36 Wireless Application Protocol Stack Source: Riku Mettala, Nokia (© Bluetooth White Paper, Aug. 1999, p. 10)

37 Wireless Markup Language

38 i-mode NTT DoCoMo Japan (1999) –35 million users Bouygues Telecom (2002) –using GPRS –charges based on volume of data Simplified HTML (cHTML - compact HTML) –page size (including GIF) < 10 kbytes Simpler than WAP –see Eurotechnology for comparison

39 Services Communication services Information Services M-Commerce Services –Pull and Push Services –Existing Services –Service Personalisation

40 Communications and Information Services E-mail Directories –Yellow pages –Location dependent Personalized agenda Forums and chat Games News Weather Forecasts Traffic Timetables –Train, Airplanes –Movies, Theatres

41 M-Commerce Services Phone orders –Physical or electronic delivery and payment –Music, Books (e-songs MP3Pro, e-articles) Reservations and tickets –Accommodation, Transportation and Entertainment Financial and banking –Accounts management, money orders, stock exchange transactions

42 M-Commerce Security and Payments Security –Cell phones tends to be individual –Phone terminal and SIM (Subscriber Identity Module) Card allow for authentication –Encrypted communications Payments –Individual Accounts managed by Mobile Net Operator –Prepaid Cards are one form of e-cash –Operator may become financial intermediary especially if it owns content

43 New role model and service delivery for UMTS Roles –Users and subscribers –Service providersService providers –Access network operatorsAccess network operators –Core transport network operatorsCore transport network operators Services –Content providers –Value-added service providers –Service management –Service brokers

44 Source: Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 124) New role model and service delivery for UMTS Roles –Users and subscribers –Access network operatorsAccess network operators –Core transport network operatorsCore transport network operators –Service providersService providers

45 Core Transport Network Operator France Telecom Cegetel 7 Pro 9 Telecom Tele2 BT (British Telecom) FLAG (Fiber Link Around the Globe)Fiber Link CTR Completel Kast Telecom

46 UMTS Access Network Operators France - UMTS operators (Licence 4.95 B euros / 15 years) –Orange –SFR –Bouygues Telecom (candidate) United Kingdom - UMTS operators (Licence for 20 years) –Vodafone (9.95 B euros) –Cellnet (6.73 B euros) –Orange (6.84 B euros) –One2One (6.68 B euros) –Hutchison (7.32 B euros)

47 UMTS Access Network Operators Germany - UMTS operators (Licence 8.4 B euros / 20 years) –Mannesmann –T-Mobil –E-Plus –Viag Interkom –MobilCom –Group3G Italy - UMTS operators (Licence 2.4 B euros / 15 years) –TIM –Omnitel –Wind

48 UMTS Access Network Operators Finland - UMTS operators (Free licence for 20 years) –Radiolonja –Sonera –Telia –Suomen Kolne –Gee (Tele2 Group)

49 Service providers Services –Content providers –Value-added service providers –Service management –Service brokers Source: Mohr and Konhaeuser, Siemens (IEEE Communications, Dec. 2000, p. 124)

50 Service providers Internet Service Providers –Infonie –Wanadoo –AOL –Mageos –... Telecom Service Providers –Carrefour Telecom –... Value-added Service Providers –Search Engines Voila Yahoo Lycos Altavista... –Portals Vizzavi... Content Providers –Education UNSA (Université en ligne) CERAM MBDS... –Entertainment Canal +... –Information CNN Euronews Reuters Bloomberg... –Service Brokers Travel Financial... Service Management Providers –Application Service Providers Nav-Link...

51 References William Johnston, "Europe's future mobile telephony system", IEEE Spectrum, Oct. 1998, pp. 49-53 Malcolm W. Oliphant, " The mobile phone meets the Internet", IEEE Spectrum, Aug. 1999, pp. 21-28 William Sweet, "Cell phones answer Internet's call", IEEE Spectrum, Aug. 2000, pp. 42-46 Malcolm W. Oliphant, "Radio interfaces make the difference in 3G cellular systems", IEEE Spectrum, Oct. 2000, pp. 53-58 Abdi R. Modarressi, BellSouth and Seshadri Mohan, Comverse Network Systems, “Control and Management in Next Generation Networks: Challenges and Opportunities”, IEEE Communications, Oct. 2000, pp. 94-102 Marcel Mampaey, Alcatel, “TINA for Services and Advanced Signaling and Control in Next-Generation Networks”, IEEE Communications, Oct. 2000, pp. 104-110 Zhu Lei, Slimane Ben Slimane, Swedish Royal Institute of Technology, “A Multicarrier Allocation (MCA) Scheme for Variable-Rate 3G Wireless Systems”, (IEEE Communications, Oct. 2000, pp. 86-91 Shingo Ohmori, MPT Japan, Yasushi Yamao, Nobuo Nakajima, NTT, “The Future Generations of Mobile Communications Based on Broadband Access Technologies”, IEEE Communications, Dec. 2000, pp. 134-142 Werner Mohr, Walter Konhäuser, Siemens, ”Access Network Evolution Beyond Third Generation Mobile Communications”, IEEE Communications, Dec. 2000, pp. 122-133 Chuck Bartel, Carnegie-Mellon University, “Wireless Technologies, Directions in Wireless Networking”, April 2001

52 References Malcolm W. Oliphant, "Radio interfaces make the difference in 3G cellular systems", IEEE Spectrum, Oct. 2000, pp. 53-58IEEE Spectrum Werner Mohr, Walter Konhäuser, Siemens, ”Access Network Evolution Beyond Third Generation Mobile Communications”, IEEE Communications, Dec. 2000, pp. 122-133 Christian David, Thierry Gadault et al., "Le Dossier UMTS", L'Expansion, 18-31 janvier 2001 L'Expansion

53 Web sites European Telecommunications Standards Institute (Europe) www.etsi.org www.etsi.org International Telecommunications Union (World)www.itu.orgwww.itu.org Universal Mobile Telecommunications Services Forum (World) www.umts-forum.org www.umts-forum.org 3G Partnership Project (3GPP) (World)www.3gpp.orgwww.3gpp.org 3GPP2 (USA)www.3gpp2.orgwww.3gpp2.org Universal Wireless Communications Consortium (USA) www.uwcc.org www.uwcc.org Internet Engineering Task Forcewww.ietf.orgwww.ietf.org World Wide Web Consortiumwww.w3.orgwww.w3.org

54 Online Resources Technology –GSM Association’s Mobile Service Initiative (M-Services) http://www.gsm.com http://www.gsm.com –GSM World http://www.gsmworld.comhttp://www.gsmworld.com –WAP Forum http://www.wapforum.orghttp://www.wapforum.org Developers kits –Nokia WAP Toolkit –http://www.forum.nokia.com/developers/wap/wap.htmhttp://www.forum.nokia.com/developers/wap/wap.htm –Ericsson WapIDE SDK –http://www.ericsson.com/wap/developerhttp://www.ericsson.com/wap/developer –Phone.com UP SDK –http://updev.phone.comhttp://updev.phone.com

55 Online Resources (2) WML Editors –WAPtor http://www.wapdrive.comhttp://www.wapdrive.com –WAPPage http://www.wapmine.com/downnew.asphttp://www.wapmine.com/downnew.asp –Nokia WML Studio for Dreamweaver http://www.macromedia.com/exchange (browsers) http://www.macromedia.com/exchange WAP Browsers –M3Gate http://www.m3gate.comhttp://www.m3gate.com –WAPMan http://edgematrix.com/productshttp://edgematrix.com/products –YourWAP Wireless Companion http://www.yourwap.comhttp://www.yourwap.com i-mode –Bouygues http://www.imode.frhttp://www.imode.fr –Eurotechnology http://www.eurotechnology.comhttp://www.eurotechnology.com


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