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 structure1. 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

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)

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) 2007-2012Users= subscribers adjusted to reflect multiple users per subscription

Region 2007 2008 2009 2010 2011 2012

North America 2.61 4.03 6.25 9.59 14.79 22.62

South America 0.66 1.18 2.14 3.92 7.17 12.97

Asia Pacific 1.39 .284 5.99 12.96 28.17 60.45

Europe 1.35 2.34 4.07 7.08 12.23 21.01

Africa/Middle East 0.30 0.65 1.46 3.32 7.50 16.60

TOTAL 6.32 11.04 19.91 36.88 69.87 133.66

Expected WiMAX operators and countries 2007-2012

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 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

Comparison between WiMAX and LTE

WiMAX 802.16e IEEE 802.16m LTE

Network equipment available

2007 2010 2009

Handset available 2008 2011 2010

Organization IEEE & WiMAX Forum IEEE & WiMAX Forum 3GPP

Radio technology SOFDMA SOFDMA SOFDMA

Antenna technology MIMO & AAS MIMO & AAS MIMO & AAS

Duplexing TDD TDD & FDD FDD

Frequency bands 2300, 2500, 3500, 5000 Under 6GHz 700, 850, 900, 1800, 1900, 2100, 2500 MHz

Channel bands 1.75MHz, 3.5MHz, 7MHz, 14MHz, 1.25MHz, 5MHz, 10MHz, 15MHz, 8.75MHz

5-40MHz 1.4MHz, 1.6MHz, 3.5MHz, 10MHz, 15MHz, 20MHz

User plane latency < 20 <5 <5

Control plane latency < 100 < 100 <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 802.16m faces future challenges from

LTE