2. A K Bhargava Emerging WiMax Challenge

3. A K Bhargava Drivers Of Change  Reforms  Competition  Technology  Innovation  Convergence

4. A K Bhargava  Increasing number of players  Southward movement of tariffs  Lower ARPUs  Expanding Subscriber base Reforms & Competition

5. A K Bhargava Technology  Data Traffic > Voice Traffic  Mobility at centerstage  Moore ’ s Law  IP Centric  Accelerating pace of change  Sophisticated Software  Open Standards  Intelligent Devices  Intelligence in Networks

6. A K Bhargava Innovation  Value Added Services  Retention  Service Delivery  Communication to Transaction  Communication to Entertainment

7. A K Bhargava Convergence  Of Technology  Of Services  Of Access  Of Devices  Of Domains

8. A K Bhargava Change Impact  Death Of Distances  Business Mange More - Bandwidth  Power to Customers  Lower ARPU  High Volume – Low Margins  Network is the king  Mobility is winner

9. A K Bhargava WiMAX Response To Change Or Disruptive Technology

10. A K Bhargava Why WiMAX (Worldwide Interoperability for Microwave Access) ?  Operators need service differentiation to compete  Advantage Greenfield operators  Wire line replacement with Wireless PSTN-quality voice and DSL-like data Profitable with mass-market consumer ARPU Solution for rural coverage  Longer reach, higher Bandwidth  Benefits of Standards Standard becoming synonymous with technology

11. A K Bhargava (WiMax) – A Standard & Not the Technology  WiMAX defined by the WiMAX Forum, formed in June 2001 to promote conformance and interoperability of the IEEE 802.16 standard, officially known as “Wireless MAN”  The Forum describes WiMAX as "a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL".  WiMAX is not a technology, but rather a certification mark, or 'stamp of approval' given to equipment that meets certain conformity and interoperability tests for the IEEE 802.16 family of standards.  Neither WiMAX, nor Wi-Fi is a technology but their names have been adopted in popular usage to denote the technologies behind them. This is likely due to the difficulty of using terms like 'IEEE 802.16' in common speech and writing.

12. A K Bhargava Benefits of a Standard For Equipment and Component Standardization creates a volume opportunity Vendors  fosters rapid innovation and the addition of new components and services.  Concentrate on specialization (i.e. Base Stations or CPEs) - no longer need to create an entire end-to- end solution as in proprietary model  Standardization creates a volume opportunity For Consumers  Receive services in areas that were previously out of the broadband loop  More players in the market translate into more choices  Quick “trickle down” effect of cost savings to consumers, translating into lower monthly rates For Service Providers  Common Platform drives down costs, fosters healthy competition and encourages innovation  Enables a relatively low initial CAPEX investment and incremental expenditures that reflect growth  No more commitments to a single vendor, a typical by-product of the proprietary technology model  Wireless systems significantly reduce operator investment risk

13. A K Bhargava WiMAX Standards  IEEE Standards 802.16-2001, 802.16c-2002, and 802.16a-2003.  Original WiMAX standard (IEEE 802.16) specified for the 10 to 66 GHz range 802.16a  updated in 2004 to 802.16-2004 (also known as 802.16d), added specification for the 2 to 11 GHz range.  802.16d (also known as "fixed WiMAX") was updated to 802.16e in 2005 (known as "mobile WiMAX"). and uses scalable orthogonal frequency-division multiplexing (OFDM) as opposed to the OFDM version with 256 sub-carriers used in 802.16d.  More advanced versions including 802.16e also bring Multiple Antenna Support through Multiple-input multiple-output communications

14. A K Bhargava WiMAX Progression 802.16-2004 WiMAX802.16e WiMAX Standard 802.16-2004 (June 2004) 802.16e (or 802.16-2005) (December 2005) ModulationOFDMOFDMA Service providers targeted DSL and cable modem ISPs, wireless and wired ISPs Mobile operators, DSL and cable modem ISPs, wireless and wired ISPs Subscriber UnitNear Line of SightNon Line of Sight, portable CPE Certified startJuly 20052H2006 Certified productJanuary 20061H2007 (expected) Commercial availability 1H20062007 (expected)

15. A K Bhargava Spectrum Issue  Wimax certified initial fixed and stationary equipment in the 3.5 and 5.8 GHz band  For mobile applications, initial profiles have been developed for 2.3, 2.5, and 3.5 GHz  Country specific spectrum availability problems  Spectrum harmonization needed

16. A K Bhargava Business Case Wireline Performance over a Broadband Wireless Infrastructure Provide Quadruple Play

17. A K Bhargava VoIP WiMAX  Most BWA systems designed for Data only,  since viable VoIP over BWA hard to implement  Business case exists for VoIP over BWA  WiMAX offers competitive solution  Regulatory issues  Competing/Complementary technology for Telcos

18. A K Bhargava WiMAX & IPTV  IPTV depending on compression, needs 1 mbps bandwidth between WiMAX base station and subscriber

19. A K Bhargava Quadruple Play WiMAX as Mobile Cellular Alternative One Network serves all Mobility for Quadruple Play

20. A K Bhargava QoS & Security OFDM & Dynamic Bandwidth Allocation WiMAX coding and modulation schemes ensure steady signal strength over distance by decreasing throughput over range to deliver the best QoS possible Prioritizing traffic WiMAX offers state of the art security via authentication and strong encryption WiMAX (802.16-2004) uses X.509 certificates for authentication and 56-bit Digital Encryption System (DES) for encryption of the data stream. Mobile WiMAX (802.16e-2005) uses EAP for authentication and Advanced Encryption System for encryption

21. A K Bhargava Simple Wireless Architecture  Point-to-Point (P2P)  Point-to-Multipoint (PMP)  Line of sight (LOS) or Non-line of sight (NLOS)

22. A K Bhargava Network Elements

23. A K Bhargava Typical System Implementation

24. A K Bhargava Competing/Complementary Technologies

25. A K Bhargava Positioning of WiMAX

26. A K Bhargava Comparison of Mobile Internet Access methods

27. A K Bhargava  HIPERMAN, WiBro  UMTS, CDMA EvDo  DSL, FTTH  4G  MBWA 802.20  Cognitive Radio RAN 802.22 Competing/Complementary Technologies