The document provides an overview of WiMAX technology, standards, and deployments. It discusses key WiMAX concepts like OFDM, adaptive modulation and coding. It also covers spectrum bands used for WiMAX around the world and advantages/challenges of licensed vs unlicensed spectrum. Market drivers and the ecosystem supporting WiMAX are described.

2. Introduction

13. WCDMA HSDPA HSUPA CDMA1x EV-DO Rev 0 EV-DO Rev A EV-DO Rev B LTE EV-DO Rev C Mobile WiMAX Mobile WiMAX II 3GPP 3GPP2 Mobile WiMAX Revolution

15. Parameter WiMAX LMDS Range 50 Kms 5 Kms Frequency 2-11 GHz 3 GHz License Combination of licensed and unlicensed spectrum Licensed spectrum Standard 802.16/16d/16e Standards activities are currently underway at the ATM Forum, the Digital Audio Video Council (DAVIC), the European Telecommunications Standards Institute (ETSI), and the International Telecommunications Union (ITU). Line of Sight Required in case of 802.16 but not required in case of 802.16d Required but can be done away with by using Orthogonal Frequency Division Multiplexing (OFDM) Data Rates Upto 75 Mbps Upto 1.5 Gbps Mobility Using 802.16e, but this standard is likely to come only by 2008 No mobility offered suitable only for fixed wireless broadband

17. High data rates, high mobility along with wide area coverage are the hallmarks of future Mobile Broadband services

18. Strengths & Weaknesses

23. Licensed Bands Required for assuring QoS and service reliability Generally preferred in heavily populated areas Network scalability under control of operator Operator predetermine impact of license fees on business case Fewer operators means less crowding Unlicensed Unlicensed spectrum in rural areas means lower cost for the end customer Fast roll outs – no need to wait for the licensing process Counters the lengthy licensing process

33. System Profile Spectrum Duplexing Channel Width Mobile WiMAX, IEEE 802.16e-2005 2.3 - 2.4 GHz (100 MHz) TDD 5/10 , 8.75(only in Korea) MHz 2.5 - 2.69 GHz (190 MHz) TDD 5/10 MHz 3.3 - 3.4 GHz (100 MHz) TDD 5, 7 MHz 3.4 -3.6 GHz (200 MHz) TDD 5, 7, 10 MHz 3.4 -3.8 GHz (400 MHz) TDD 5, 7, 10 MHz Fixed WiMAX IEEE 802.16-2004 3.4 – 3.6 GHz TDD 1.75, 3.5, 7 MHz 3.4 – 3.6 GHz FDD 1.75, 3.5 , 7 MHz 5.725 – 5.850 GHz TDD 5/10 MHz

34. 2005 2006-07 2007+ Availability and coverage (phase 1) Capacity and pricing (phase 2) Service differentiation (phase 3)

37. EQUIPMENT MANUFACTURERS SERVICE PROVIDERS

39. ARPU or Equivalent Number of Users Carrier-Centric Ad-Supported Search-Centric Craigslist Source: Yankee Group, 2006 Community-Centric Communications Centric CE-Centric Commerce-Centric Content-Centric

42. Source: Intel, the WiMAX Forum * Other names and brands may be claimed as the property of others

43. Fixed WiMAX ‘06 Nomadic WiMAX ’ 07 – ‘08 Mobile WiMAX ’ 08 – ‘09 Technology Modem Client PC-Card + Integration Notebook Full Mobile Integration Full range of Mobile Devices Outdoor & Indoor Modems + WiFi Desktop + Notebook

45. Bridging the Digital Divide WiFi Hotspots Economic Vitality Digital Govt Education Home Usage Healthcare Safety & Security Wireless Broadband Connectivity

46. Application Bandwidth VoIP (Depending on Coding) 4 ~ 64 Kbps Video Phone (WiBro) 32 ~ 384 Kbps Music 5 ~ 128 Kbps Video Clips 20 ~ 384 Kbps Movies Streaming > 2 Mbps Web Browsing ~ 256 Kbps Instant Messaging ~ 250 Bytes Data Download (FTP) ~ 1 Mbps E-mail ( with Attachment) ~ 200 Kbps

53. It has severely impacted the EBITDA margins of the company , operators are looking for more spectral efficient networks and providing a provision for enhanced services and better QOS. Increasing Traffic and Declining ARPU – Major concern for existing operators

54. Embedded devices are key to future Personal Broadband Potential !!! Device Convergence

55. WiMAX & 3G: Different Solutions on Different Timelines EV-DO EV-DO Rev A EV-DO (Rev B, C, AIE) OFDMA, IP- Optimized Next Gen Mobile BWA 3GPP2 Technology Evolution 2010+ UMTS/ WCDMA HSPA (+) LTE 3GPP Technology Evolution 802.16-2004 802.16e-2005 WiMAX Rel 1 802.16 NextGen WiMAX Technology Evolution WiMAX – Next Generation Network Capable a Full Generation In Front of LTE

56. Today Future One radio Multi radio Device Convergence Cellula r Wi-Fi UWB WiMAX Wi-Fi Cellular

58. Why WiMAX ? Technology Innovation OFDM,MIMO, All IP Strong Ecosystem Competition, Innovation, Economical Markets & Segments Emerging, Developed Consumer & Enterprise Service Provider New Business Model, TTM, Low Cost- High Performance Spectrum Allocation WiMAX specific, 2-3 carriers /Country, TDD & FDD Consumer Needs Applications, Devices, Mobility vs. WiFi, 3G Hotspot to everywhere Up to 1/10 th Cost $/bit Why WiMAX? WiMAX : Foundation for Hyper-Connectivity and True Broadband

63. Intranets/ Internet WiFi/WiMax Base Switching Station (GSM/EDGE) UTRAN (WCDMA) Mobile Packet Backbone Network IP Multimedia Subsystem Access Point Site Router Base Transceiver Station (BTS) Base Station Controller (BSC) Service Domain Host Subscriber Server (HSS) Emergency Alert System (EAS) Call Session Control Function (CSCF) Media Resource Function (MRF) Transit Switching Center (TSC) Mobile Switching Center (MSC) Serving GPRS Support Node (SGSN) Multimedia Gateway WLAN Access Server Gateway GSN Media Gateway Base Transceiver Station (BTS) Radio Network Controller (RNC) Mobile Packet Networks PSTN/ ISDN

65. Simplified DSL Architecture The role of the Application Service Provider, the Network Service Provider and the Access Service Provider in the DSL reference architecture are similar to the role of the ASP, NSP and NAP in the WiMAX reference architecture.

66. The migration of DSL access networks towards Ethernet based aggregation introduces a V reference point in the architecture which allows the combination of a mobile WiMAX network with a DSL access network based on Ethernet bridging.

71. WiMAX features Benefits to KDDI and other mobile operators High capacity Supplementary coverage to 2G and 3G networks to offer significant high speed data capability Low cost spectrum Alternative low cost spectrum even in areas of strong coverage to ensure peak performance for key services and users Low latency and high channel width Services and applications that are cost- and performance-optimized for highspeed real-time operation and essential for VoIP Standards-based Proven low risk technology with clear evolution path and widely available equipment and user devices including laptops and a variety of handheld devices All-IP core An already available avenue to rapidly move towards an all-IP IMS/MMD environment given other equivalent options such as LTE are still many years from implementation; lower operational cost base VoIP An economical IP-based voice back-up to supplement existing and future mobile networks Interoperability with fixed, mobile and wireless networks Fully convergent network service with seamless transparent handovers andsession continuation for users moving between 2G, 3G, DSL, FTTH, Wi-Fi and other fixed, wireless and mobile networks Attractive IPR Lower ongoing cost of operation, upgrade and user device royalties

75. As last mile broadband solution The Demand is Real

78. Price in $

83. THANK YOU!