1. Wang Junxi

2. Agenda IntroductionTransmission Rate ImprovementStandardsUMTS OrganizationsUMTS Network ArchitectureBenefitConclusion

3. Introduction: 1G to 3G 3 1999 1995 1990s 1980s 1940s US 1950s Europe < 1 million subscribers cellular systems ~20 million subscribers GSM 1G 2G GSM900 GSM1800 GSM1900 450 million subscribers 140 countries 400 networks 2.5G GPRS EDGE 3G UMTS TD-SCDMA IMT-2000 2.75G

4. Transmission Rate Improvement

5. Standards

6. 3GPP( Third-Generation Partnership Project) UMTS Organizations SDOs.TSI (Europe), Association of Radio Industries and Business/ Telecommunication Technology Committee (ARIB/TTC) (Japan), American National Standards Institute (ANSI) T-1 (USA), telecommunications technology association (TTA) (South Korea), Chinese Wireless Telecommunication Standard (CWTS) (China).

7. UMTS Network Architecture Core Network provide switching, routing and tran sit for user traffic. CN UMTS Terrestrial Radio A ccess Network UTRAN User Equipment Node B counterpart, RNC counterpart, CN counterpart UE

8. Benefit

9. Benefit-Web Services 3G will offer transparent HTML access in addition to cHTML, xHTML Various Microbrowsers for handhelds, PDAs and portable computers will be available. Higher Bitrates: HSDPA = 10 Mbps (ITU-R update M.1457) Java Download

10. End-to-end harmonised 3G portal services for mobile users

11. Conclusion UMTS is the most efficient of all the 3G technologies. UMTS network high traffic capacity. Faster, Larger

12. References Peter Rysavy, Voice Capacity Enhancements for GSM Evolution to UMTS http://www.iec.org/online/tutorials/umts/index.asp http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System http://www.umtsworld.com/technology/overview.htm#a3