himanshu wimax

Made by:- Himanshu Kumar B.Tech:- 4th yr (E.C.E)

Worldwide Interoperability of Microwave Access.

A subset of IEEE 802.16 standard.

Broadband MAN Technology.

Operates on general principle as Wi-Fi.

Goal:- High-speed Internet Access.

Frequency range:- 10-66 GHz and sub 11GHz

Speed:- 70 megabits per second

Range:- 30 miles

PAN:- 33 foot radius.

LAN:- 300 foot radius.

MAN:- 30 mile radius.

WAN:- Infinite.

Addresses Transmission Issues

Higher level protocols which are independent of network architecture

802.16 Protocol is concerned with the lowest two layers

Application

Presentation

Session

Transport

Network

Data Link

Physical

Top Level

Bottom Level

Physical Layer:-◦Medium◦Encoding/Decoding of signal.◦Bit Tx and Rx.

MAC Layer:-◦Allocate channel capacity.◦At Tx, assemble data into frame.◦At Rx, deassemble frame into

data.

• Base Station is similar to a cell-phone tower which can provide coverage to a 30 miles.

• Receiver could be a antenna in a small box or PCMCIA card.

• Cellular Backhaul.• Broadband connection to Remote areas.

• Broadband on demand.• Services:- LOS And NLOS.• Different Protocol Standard.

Features WiMax (802.16) Wi-Fi (802.11)

Primary ApplicationBroadband Wireless Access

Wireless LAN

Frequency BandLicensed/Unlicensed 2 GHz to 11 GHz

2.4 GHz ISM

Channel BandwidthAdjustable 1.25 MHz to 20 MHz

25 MHz

Half/Full Duplex Full Half

Bandwidth Efficiency <=5 bps/Hz <=0.44 bps/Hz

Speed 70mbps 54mbps

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