Wimax by communication-engineers

IEEE 802 Overview

IEEE 802 Family

Global Wireless Standards WAN 3GPP, EDGE (GSM)

IEEE 802.20 (proposed) IEEE 802.16 WirelessMAN IEEE 802.11 WirelessLAN

IEEE 802.15 Bluetooth

MAN

ETSI HiperMAN & HIPERACCESS

LAN PAN

ETSI HiperLAN

ETSI HiperPAN

Broadband Capable Terrestrial Wireless Networks Personal Area Networks (PANs)

BlueBluetooth tooth

“Last Mile” Access Alternatives Wide Metropolitan Local Area Area Area Networks Networks Networks (WANs) (MANs) (LANs)

UWB UWB 802.1 802.1 55

WLAN WLAN 802.1 802.1 11

LMDS

WMAN (802.16d)

WMAN (802.16e)

Cellular Cellular 2.5 2.5 G, G, 3G 3G

MMDS

Mobile WiMAX 50 feet

500 feet

10’s miles

Range

Broadband access technologies

Broadband access technolgyies

LMDS

MMDS

LMDS and MMDS combined

LMDS Band Allocation

Enable Standards & Interoperability IEEE: The Path to Volume Economics Ethernet Volume

Formula:

• Existing proprietary technology & market • Standards adoption • Low cost manufacturing through economies of scale • Wireless: available spectrum

1980s

1990s

2000

2010

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

What is WiMax? â&#x20AC;˘

â&#x20AC;˘

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.

WiMax Forum • • •

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.

802.16 Overview

WIMAX versus WLAN 802.16

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

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

coverage

Outdoor NLOS performance standard support for advanced antenna techniques

Optimized for indoor performance ,short range

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

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

can use all available BW ,multiple channel support cellular 802.16 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

is contention based MAC (CSMA/CA) ,802.16 dynamic TDMA- 802.11 based MAC with on-demand BW allocation

MAC

Polling â&#x20AC;&#x201C;based MAC layer

Contention based MAC

scalability

Various 802.16 Flavors

IEEE 802.16-2004 standard overview

Benefits of Licensed and LicenseExempt Solutions Licensed Solution

License-Exempt Solution

Better QoS

Fast Rollout

Better NLOS reception at lower frequencies

Lower Costs

Higher barriers for entrance

More worldwide options

WiMax Layer

Modulation Techniques

Adaptive Modulation

Primary Capability

• Highest speed processor • Larger display

• Processor optimized for low power consumption & small form factor

Dat a

ce Voi

802.11 & 802.16

Nomadic

Portable

Tablet

Handheld

WiMAX Backhaul for Business Non Line of Sight Point to Multipoint

Point to Point BACKHAUL

802.11

Telco Core Network or Private (Fiber) Network

E1/T1+ LEVEL SERVICE ENTERPRISE

FRACTIONAL E1/T1 for SMALL BUSINESS

INTERNET BACKBONE

Courtesy of Intel Corporation 2003

WiMAX Consumer Last Mile OUTDOOR CPE

Non Line of Sight Point to Multipoint

802.11

INDOOR CPE

Point to Point BACKHAUL

802.11 & 802.16 Telco Core Network or Private (Fiber) Network INTERNET BACKBONE

Courtesy of Intel Corporation 2003

WiMAX Nomadic / Portable Non Line of Sight Point to Multi-point

802.16

Line of Sight BACKHAUL

802.16

802.16 PC Card

Laptop Connected Through 802.16

SEEKS BEST CONNECTION

Telco Core Network or Private (Fiber) Network

INTERNET BACKBONE

2 to 3 Kilometers Away

Broadband wireless access

Wireless Broadband Everywhere