Wimax

Copyright 2003 Worldwide Interoperability for Microwave Access Forum WiMAX, "WiMAX Forum" and "WiMAX CERTIFIED" are marks of the WiMAX Forum

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IEEE 802 Overview


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IEEE 802 Family


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Global Wireless Standards

IEEE 802.15 Bluetooth

WAN

MAN

LAN

PAN ETSI HiperPAN

IEEE 802.11 WirelessLAN

ETSI HiperLAN

IEEE 802.16 WirelessMAN

ETSI HiperMAN & HIPERACCESS

IEEE 802.20(proposed)

3GPP, EDGE (GSM)


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“Last Mile” Access Alternatives

Blue-tooth

Broadband Capable Terrestrial Wireless Networks

UWB802.1

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PersonalArea

Networks(PANs)

Range50 feet 500 feet 10’s miles

MetropolitanArea

Networks(MANs)

WLAN802.1

1

LocalArea

Networks(LANs)

WideArea

Networks(WANs)

Cellular2.5 G,

3GMMDS

LMDS

WMAN(802.16d)

WMAN(802.16e)

Mobile WiMAX


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Broadband access technologies


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Broadband access technolgyies


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Broadband access technolgyies


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LMDS


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MMDS


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LMDS and MMDS combined


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LMDS Band Allocation


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1980s 1990s 2000

Volu

me

Ethernet

2010

Formula:• Existing proprietary

technology & market• Standards adoption• Low cost manufacturing

through economies of scale• Wireless: available spectrum

Enable Standards & InteroperabilityIEEE: The Path to Volume Economics

*Other names and brands may be claimed as the property of others.

http://wimaxforum.org/news/events.asp


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• WiMax (Worldwide Interoperability for Microwave Access) is a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL.

• The technology is specified by the Institute of Electrical and Electronics Engineers Inc., as the IEEE 802.16 standard.

What is WiMax?


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• It is a non-profit industry body dedicated to promoting the adoption of this technology and ensuring that different vendors’ products will interoperate.

• It is doing this through developing conformance and interoperability test plans and certification program.

• WiMAX Forum Certified™ means a service provider can buy equipment from more than one company and be confident that everything works together.

WiMax Forum


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802.16 Overview


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WIMAX versus WLAN802.16 802.11b(WI -FI) Technical difference

range Up to 30 miles typical cell size

) 4-6miles(

Sub -300 feet)add acess points for greater

coverage(802.16 tolerates greater multipath delay spread via 256 FFT vs 64 FFT

coverage Outdoor NLOS performance standard support for advanced antenna techniques

Optimized for indoor performance ,short range

802.16 systems has an overall higher system gain dellvering greater penetration through obstacles at longer distances

scalability Designed to support hundreds of CPES with unlimited subscribers behind each CPE

Intended for LAN applications ,users scale from one to tens with one subscriber for each CPE device

802.16 can use all available BW ,multiple channel support cellular deployment,802.11 is limited to license exempt spectrum

Bit rate Up to 100 MB/S in 20 MHZ channel Up to 54MB/S in 20MHZ channel Higher modulation coupled with flexible error correction

QOS Built in to MAC voice/video service levels

No QOS support 802.11 is contention based MAC (CSMA/CA) ,802.16 dynamic TDMA-based MAC with on-demand BW allocation

MAC Polling –based MAC layer Contention based MAC


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Various 802.16 Flavors


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IEEE 802.16-2004 standardoverview


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Licensed Solution License-Exempt Solution

Better QoS Fast Rollout

Better NLOS reception at lower frequencies

Lower Costs

Higher barriers for entrance More worldwide options

Benefits of Licensed and License-Exempt Solutions


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WiMax Layer


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Modulation Techniques


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Adaptive Modulation


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• Highest speed processorHighest speed processor• Larger displayLarger display

• Processor optimized for low power Processor optimized for low power consumption & small form factorconsumption & small form factor

DataDataVoiceVoice

NomadicNomadic HandheldHandheldTabletTabletPortablePortable

802.11 & 802.16802.11 & 802.16 3G3G

Prim

ary

Cap

abili

tyPr

imar

y C

apab

ility


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WiMAX Backhaul for Business

Point to Point BACKHAUL

INTERNETBACKBONE

Telco Core Network or

Private (Fiber) Network

Non Line of SightPoint to Multi-

point

FRACTIONAL E1/T1 for SMALL

BUSINESS

802.11

E1/T1+ LEVELSERVICE ENTERPRISE

Courtesy of Intel Corporation 2003


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WiMAX Consumer Last Mile

INTERNETBACKBONE

Telco Core Network or

Private (Fiber) Network

Non Line of SightPoint to Multi-

pointOUTDOORCPE

INDOORCPE

802.11802.11Point to Point BACKHAUL

Courtesy of Intel Corporation 2003

802.11 802.11 & &

802.16 802.16


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WiMAX Nomadic / Portable

INTERNETINTERNETBACKBONEBACKBONE

Telco Core Telco Core Network or Network or

Private (Fiber) Private (Fiber) NetworkNetwork

Non Line of SightNon Line of SightPoint to Multi-pointPoint to Multi-point

802.16802.16

802.16802.16

SEEKS BESTSEEKS BESTCONNECTIONCONNECTION

Laptop ConnectedThrough 802.16

2 to 3 Kilometers Away

Line of Sight Line of Sight BACKHAULBACKHAUL

802.16 PC 802.16 PC CardCard


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Broadband wireless access


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www.Legend_tech.org

Wireless Broadband Everywhere

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