The Technical and Market Study for WiMAX Name: GAO FENG Department: Wireless Communication and Networking

Topics Objectives Content and structure Key issues and findings Conclusions

Objectives WiMAX standards and technology study WiMAX deployment status Economy crisis impact WiMAX’s Future

Content and structure 1.Background of broadband WiMAX –Evolution of broadband wireless –Background on IEEE and WiMAX 2.Opportunity and challenge –Opportunities –Technical and business challenges 3.Technical overview of WiMAX –Physical layer –MAC layer –Network architecture 4.WiMAX Deployment –WiMAX deployment analysis –WiMAX product development –Market status of WiMAX deployment 5.WiMAX development trend –Development of IEEE m –Competition between LTE and WiMAX 6.Conclusions

Background of broadband WiMAX Evolution of broadband wireless –Through 4 stages –No common standard before WiMAX IEEE and WiMAX –First release for in 2001 –IEEE (Fixed WiMAX) –IEEE e-2005 (Mobile WiMAX)

Opportunity A common standard for broadband wireless Opportunities both in developed and developing countries Leading the way to 4G

Table 2.1 WiMAX Users by Region (millions) Users= subscribers adjusted to reflect multiple users per subscription Region North America South America Asia Pacific Europe Africa/Middle East TOTAL

Expected WiMAX operators and countries

Challenges Business challenges –Challenges from wired broadband solutions, DSL, cable modem, etc. –Challenges from 3G Technical challenges –Unpredictable channel –Spectrum scarcity –Quality of Services –Mobility –Power consumption –Security –IP based networking

Technical overview of WiMAX WiMAX Physical Layer –Orthogonal Frequency Division Multiple Access (OFDMA) is used –Symbol structure and subchannelization –Frame structure WiMAX MAC Layer –Quality of Service –Mobility management –Power management –Security WiMAX network architecture –Network Reference Model –IP addressing –Quality of Service –Mobility management

WiMAX deployment Identify capacity requirement Base station deployment alternatives –Advanced antenna system –Frequency reuse –Frequency band –Channel bandwidth –UL link budget –Duplexing

Frequency deployment map

WiMAX deployment map

Economy crisis impact

Future of WiMAX IEEE m –Increased data rate –Meet IMT Advanced requirements –Expected to be released in 2010 Competition between WiMAX and LTE –Similar technologies –IMT Advanced approval –WiMAX’s two-year-ahead advantage –LTE has available infrastructure and experiences from 3G

Comparison between WiMAX and LTE WiMAX eIEEE mLTE Network equipment available Handset available OrganizationIEEE & WiMAX Forum 3GPP Radio technologySOFDMA Antenna technologyMIMO & AAS DuplexingTDDTDD & FDDFDD Frequency bands2300, 2500, 3500, 5000Under 6GHz700, 850, 900, 1800, 1900, 2100, 2500 MHz Channel bands1.75MHz, 3.5MHz, 7MHz, 14MHz, 1.25MHz, 5MHz, 10MHz, 15MHz, 8.75MHz 5-40MHz1.4MHz, 1.6MHz, 3.5MHz, 10MHz, 15MHz, 20MHz User plane latency< 20<5 Control plane latency< 100

Conclusions Developing fast in last 3 years WiMAX ecosystem has been built though it is not mature Affected by economy crisis and expected to keep growing after crisis. Supplement for the existing technology such as Wi-Fi and 3G, but not a replacement IEEE m faces future challenges from LTE