Himanshu wimax
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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
www.howstuffworks.comwww.wimaxforum.comwww.wikipidia.Comwww.wimax.com