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

2. Topics Objectives Content and structure Key issues and findings Conclusions

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

4. Content and structure 1.Background of broadband WiMAX –Evolution of broadband wireless –Background on IEEE 802.16 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 802.16m –Competition between LTE and WiMAX 6.Conclusions

5. Background of broadband WiMAX Evolution of broadband wireless –Through 4 stages –No common standard before WiMAX IEEE 802.16 and WiMAX –First release for 802.16 in 2001 –IEEE 802.16-2004 (Fixed WiMAX) –IEEE 802.16e-2005 (Mobile WiMAX)

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

7. Table 2.1 WiMAX Users by Region (millions) 2007-2012 Users= subscribers adjusted to reflect multiple users per subscription Region200720082009201020112012 North America2.614.036.259.5914.7922.62 South America0.661.182.143.927.1712.97 Asia Pacific1.39.2845.9912.9628.1760.45 Europe1.352.344.077.0812.2321.01 Africa/Middle East0.300.651.463.327.5016.60 TOTAL6.3211.0419.9136.8869.87133.66

8. Expected WiMAX operators and countries 2007-2012

9. 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

10. 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

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

12. Frequency deployment map

13. WiMAX deployment map

14. Economy crisis impact

15. Future of WiMAX IEEE 802.16m –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

16. Comparison between WiMAX and LTE WiMAX 802.16eIEEE 802.16mLTE Network equipment available 200720102009 Handset available200820112010 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

17. 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 802.16m faces future challenges from LTE