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UMTS

UMTS. Mohamed Mokdad Ecole d’Ingénieurs de Bienne. GSM Evolution. Licensing Business spreading over boarders Technology 1st Generation - 1G Analog cellular 2nd Generation - 2G Multiple digital systems 3rd Generation - 3G HSCSD, GPRS, EDGE (1/2 generation) i.e. GSM Evolution.

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UMTS

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  1. UMTS Mohamed Mokdad Ecole d’Ingénieurs de Bienne

  2. GSM Evolution • Licensing • Business spreading over boarders • Technology • 1st Generation - 1G • Analog cellular • 2nd Generation - 2G • Multiple digital systems • 3rd Generation - 3G • HSCSD, GPRS, EDGE (1/2 generation) • i.e. GSM Evolution

  3. Bit Rate Evolution

  4. IMT-2000 families IMT-2000 UMTS – 3GPP CDMA-2000 ? Europe Japan USA Korea China USA USA

  5. SDOs and UMTS • Europe • 3GPP • ETSI, ARIB, TTA, CWTS, T1 and TTC • W-CDMA interface = UTRA • USA • US national standard • Compatible to IMT-2000, i.e. to UMTS • CDMA2000

  6. IMT-2000 Families • Total of 17 families in 1998 • All accepted by ITU • 11 terrestrial and 6 via satellite • The important ones • UMTS (W-CDMA) • GSM successor • CDMA2000 (TD-SCDMA) • AMPS/GSM successor

  7. IMT-2000 criteria • Used worldwide • Interoprability • Used for all mobile applications • PS and CS support • PS implies IP support • Higher data rates • Up to 2 mbps: 144, 384 and 2048 kbps • Higher sprectrum efficiency

  8. IMT-2000 = IT&T integration

  9. UMTS - the European system • Main improvement • UTRA: UMTS Terrestrial Radio Access • W-CDMA for land mobile systems • UTRA supports • TDD: Time Division Duplex • For micro and pico cells • FDD: Frequency Division Duplex • For wide area coverage • UTRA Multicarrier

  10. Remember

  11. Spread spectrum or not?

  12. GSM-UMTS interoperability • UTRAN • UTRA: UMTS Terrestrial Access Network • GSM-Only • Access via Um interface • GSM/UMTS • Access via Uu interface • If no UMTS coverage • Access via Um with reduced bandwidth

  13. Licensing • More than one mobile operator • CH: Swisscom, Sunrise, Orange & Telefonica • Famous cases: Germany and UK • Licensing • Auction (based just on money income) • Ethics (based on social aspects as well) • UMTS issues • Very high investment and unknown revenue

  14. Spectrum availability 1850 1900 1950 2000 2050 2100 2150 2200 2250 2010 MHz ITU “IMT-2000” IMT 2000 IMT 2000 MSS MSS 2110 MHz 2170 MHz 2025 MHz 1885 MHz Europe UMTS UMTS GSM 1800 DECT MSS MSS 1980 MHz 1880 MHz 2170 MHz 1919.6 MHz

  15. Swiss Case

  16. UMTS technology • Architecture Overview • UMTS Network Architecture Overview • Universal Terrestial Radio Access Network • UTRAN Architecture • Core Network Architecture • Protocol Architecture • Understanding Different Channels Types

  17. UMTS Cells Mega Cell >10 km Macro Cell 5-10 Km Micro Cell 0.5 km Pico Cell 100 m

  18. U-MSC

  19. Node B and RNC RNC = Radio Network COntroller

  20. UTRA = UTRAN? UMTS Terrestrial Radio Access Network

  21. RNC to RNC? CN RNC RNC Iur

  22. UMTS Interfaces bis • RAN • Radio Access Network • RAN  Core Network • PS to Data CS to Circuit switched networks • UE  Node B: Uu (Um for GSM) • Node B  RNC: Iub • RNC  RNC: Iur (new to GSM) • RNC  GSM: Iu

  23. UMTS Interfaces TA: Terminal Adaptor. MT: Mobile Termination. ME: Mobile Equipment. UE: User Equipment UTRAN: UMTS Radio Access Network. CN: Core Network.

  24. PS & CS Paths

  25. The Stack

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