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 – 3GPPCDMA-2000? Europe Japan USA Korea China 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 185019001950200020502100215022002250 ITU “IMT-2000” Europe 1885 MHz 2025 MHz IMT 2000 UMTS GSM 1800 DECT MSS 1880 MHz 1980 MHz 2010 MHz IMT 2000 MSS UMTS 2110 MHz 1919.6 MHz 2170 MHz MSS

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 kmMacro Cell 5-10 Km Micro Cell 0.5 kmPico 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? RNC Iur CN RNC

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