1. Copyright 2006 WiMAX Forum “WiMAX,” “WiMAX Forum,” the WiMAX Forum logo, "WiMAX Forum Certified,” and the WiMAX Forum Certified logo are trademarks of the WiMAX Forum. All other trademarks are the properties of their respective owners. Mobile WiMAX “Mobile Internet Ready for Global Deployment” Dean S.K. Chang Vice Chair, Marketing Working Group, WiMAX Forum Director, Product Management and Strategy, Aperto Networks dchang@apertonet.com

2. 2 Agenda: Mobile wireless Internet market demand Mobile Internet service requirements WiMAX is a cornerstone for Next-Generation of mobile Internet services How the WiMAX Forum is driving the adoption of Anytime, Anywhere Connectivity Operator commitments to deploy WiMAX

3. 3 Anytime, Anywhere The Demand is Real

4. 4 Broadband Market has Significant Upside Broadband Usage Growing Faster Than We Have Seen in Other Emerging Technologies Sources: Internet World Stats, Wireless Intelligence, Point Topic thousands of subscribers Gap

5. 5 Smart Phones Feature Phones Voice Phones Sources: IDC, Web-Feet Research 0% 100 % 50% ‘03‘05‘06‘07 ‘08 ‘04 ‘09 ‘02 Growth and Revenue are in Data Services Voice Revenues Growing at a 4.7% CAGR Data Revenues Growing at a 30.7% CAGR

6. 6 Service Requirements for High-Speed Internet Success Easy-to-use Affordable Works on variety user device form-factors Supports multiple usage models Deliver broadband experience similar to fixed Supports many applications (data, voice, video) over IP Global roaming

7. 7 One Platform For All Internet Connectivity WiFi Enterprise Intranets IMS Services Network 2G 3G Wireline Application servers - “own” applications - Hosted applications WiMAX IMS OSA / Web Services IMS Signaling, Policy and Charging Functions Core Network Internet

8. 8 System Requirements to Answer Demand Rich All-IP Multimedia Content VoIP-Interactive A/V-TCP Data Coverage/Capacity Anytime, Indoor/Outdoor Scalability Networks, Devices, Mobility User/Operator Needs Cellular & Broadband Ecosystems High Link Budget High Link Budget High Spectral Efficiency High Spectral Efficiency Adaptive Channel Utilization Adaptive Channel Utilization Extended Battery Life Extended Battery Life Tiers of mobility Tiers of mobility Interworking Interworking Multiple frequencies Multiple frequencies Multiple channel widths Multiple channel widths High Peak/Average Data Rates High Peak/Average Data Rates Low Latency, Jitter, Delay Low Latency, Jitter, Delay High Link Reliability, Symmetry High Link Reliability, Symmetry Seamless Mobility Seamless Mobility System Requirements

9. 9 WiMAX is a Cornerstone For Next-Generation of Broadband Connectivity

10. 10 Why WiMAX? Delivers wireless broadband anytime, anywhere Internet technology from the ground up One common standard delivers a global platform for mobile Internet services Delivers the highest capacity and greatest throughput at the lowest cost - OFDMA

11. 11 Wireless Technologies are Evolving to OFDMA SPECTRUM EFFICIENCY SIMPLIFIES ADVANCED RFTECHNIQUES LEVERAGESBANDWIDTH OPTIMIZES SPECTRUM ALLOCATION Delivered Throughput Early ’90sMid-’90sEarly ’00sMid-’00s GSM CDMA OFDMA OFDMA offers better spectral efficiency – Directly translates to higher throughput and capacity

12. 12 WiMAX is NOT a Cellular Voice Replacement WiMAX was not developed to compete with cellular voice market WiMAX WILL Complement 3G Data Services WiMAX is a technology choice delivering high-capacity and high- throughput data services

13. 13 Contrasting Wi-Fi / WiMAX / Cellular 2G/3.xG Cellular Packet overlays but based on slot based, circuit switched resource allocation Efficient for voice traffic Inefficient for bursty traffic (email, http) CSMA/CA Efficient for unpredictable traffic in an unlicensed band Inefficient for predictable traffic (voice) “Sharing model” designed for unlicensed band No control of resource allocation policy Wi-Fi WiMAX Fast dynamic scheduling Contention access for bandwidth requests only Resource allocation exclusively by BS – retains tight policy control by network Efficient for both bursty, unpredictable traffic and voice WiMAX is the Optimal Solution for Mobile Internet

14. 14 Benefits of a WiMAX All-IP Network Internet IP Core PSTN ASP BS Increased Revenue: rapid roll-out of advanced services Lower CAPEX and OPEX Higher Compatibility, Lower Complexity Simplified internetworking with other IP technologies WiMAX fits easily into wired and wireless ecosystem

15. 15 WiMAX Forum is Accelerating this Thriving Ecosystem Members are Key to Worldwide Momentum

16. 16 WiMAX Forum Content / Ecosystem (28%) Service Providers (33%) System Vendors (22%) Component Suppliers (17%) WiMAX Forum 414 Members Global Representation 28 WiMAX Forum Certified Products Deliver a trusted certification process Deliver a trusted certification process Develop a framework for a high performance end-to-end IP mobile network architecture supporting all usage models Develop a framework for a high performance end-to-end IP mobile network architecture supporting all usage models Promote WiMAX as the leading business model to to deliver global wireless broadband services Promote WiMAX as the leading business model to to deliver global wireless broadband services WiMAX Forum contributes to foster a thriving ecosystem WiMAX Forum contributes to foster a thriving ecosystem

17. 17 Incredible Opportunity for Wireless Internet Worldwide We Have Momentum !

18. 18 More Than 250 Operator Trials and Deployments in 65+ countries! Source: Intel, the WiMAX Forum * Other names and brands may be claimed as the property of others

19. 19 Sprint – Nextel Internet-on-the-Go "None of us today can envision our lives without wireless connectivity or the Internet," explained Gary Forsee, president and chief executive officer of Sprint Nextel. "Sprint Nextel is taking a major step forward by linking the incredible potential of these two cornerstones of daily communications. We'll give customers the power to harness business information and personal entertainment easily and inexpensively -- and in ways that they will one day wonder how they lived without. Sprint Nextel selects WiMAX as next generation 4G technology platform – 8/8/2006 Cost-per-megabit and performance advantage over 3G With Intel, Motorola, and Samsung Use 2.5 GHz spectrum in US Expect to cover 100 million people in 2008

20. 20 Samsung Unveils World's First Mobile WiMAX Handset - Jan 06’ Weight: 184 gms 2.8 inch QVGA (TFT LCD) Slide away QWERTY keyboard OS: Windows Mobile 2003 CPU: PXA 272 / 520MHz Dual cameras – 3/1.3 megapixel Video telephony support DMB tuner (ability to receive satellite TV) TV out function to watch the videos + photographs on a big screen. LAS VEGAS, Jan. 4 /PRNewswire/ -- For the first time in the United States, Samsung demonstrates WiBro (Korean Wireless Broadband) service on one of the world's first Mobile WiMAX phones, the Samsung M8000. Samsung's WiBro service demonstration is an exciting precursor to the first commercial service in the Korean market slated for the first half of 2006.

21. 21 KT (Korea Telecom) WiBro Services Commercial Mobile WiMAX service since June 2006 Mobile TPS (Triple Play Service) –Communication : Fixed mobile convergence communicator including SMS, MMS, chatting, VoIP, video conferencing –Data : Mobile internet access –Media : Real-time media service (VoD, MoD), Personal media blog

22. 22 M-Taiwan Program Taps WiMAX for Wireless Science and Technology Advisory Group ( (STAG) states: 2.50-2.69 GHz band allocated for WiMAX 30K WiMAX base stations & 3M CPEs by 2008 8 Million users by 2012

23. 23 Summary and Conclusion Demand for wireless Internet is real and it is here today WiMAX is the right technology for answering the demand The WiMAX Forum is fostering a thriving ecosystem Worldwide momentum Image Courtesy of NASA

24. 24 Thank You! w w w. w i m a x f o r u m. o r g