1. A study of Unlicensed Mobile Access(UMA) Technology Presenter: Khanh Nguyen Instructor: Chin-Chih Chang

2. A study of Unlicensed Mobile Access(UMA) Technology Introduction Characteristics of UMA Architecture UMA Applications Conclusion

3. UMA Participating Companies Alcatel British Telecom Cingular Ericsson Kineto Wireless Motorola Nokia Nortel Networks O2 Research in Motion Rogers Wireless Siemens Sony Ericsson T-Mobile US

4. Why UMA? Unlicensed Mobile Access (UMA) technology enables access to GSM and GPRS mobile services over unlicensed spectrum, including Bluetooth and WiFi.

5. Architecture Overview

6. Protocols Standard 3GPP Protocols Standard Unlicensed Radio Access Protocols Standard IP-based Protocols UMA Specific Protocols –UMA-RR –UMA Radio Link Control

7. UMA Security Mechanisms

8. How UMA Technology Works

9. Specification History Stage 1 Specification (User Perspective)9/1/2004 Stage 2 Specification (Architecture) –UMA Stage 2 R1.0 9/1/2004 –………. –UMA Stage 2 R1.0.4Clean 5/16/2005 Stage 3 Specification (Protocols) –UMA Stage 3 R1.0 9/1/2004 –……. –UMA Stage 3 R1.0.4Clean 5/16/2005

10. Development Philips Electronics announced a complete Unlicensed Mobile Access (UMA) semiconductor reference design to make it easy for mobile handset manufacturers to bring UMA-enabled phones to their customers

11. References [1] UMA Sprecifications UMA Technology - Extending Mobile Services to Unlicensed Sprectrum http://www.umatechnology.org/specifications/index.htm [2] Philips Electronics Announces Complete Unlicensed Mobile Access (UMA) Semiconductor Reference Design Mitsui & Co. Venture Partners http://www.mitsuivp.com/cgi- bin/WebObjects/f1f2557f0f.woa/wa/read/102ef056b5c/ [3] Alex Goldman Wi-Fi /Cellular Convergence: Evaluating UMA Wi-Fi Planet http://www.wi- fiplanet.com/news/article.php/3463271 [4] Glenn Fleishman Unlicensed Mobile Access on Verge of Deploying WNN Wi-Fi Net News http://wifinetnews.com/archives/004825.html

12. Conclusion UMA is nice technology to have;however, it might take time and a lot of effort before it becomes popular. There are not a lot of companies investing into this technology.

13. Questions ?