• WiMax Standards
  • WiMax is well suited to offer both fixed and mobile access
  • Relation of Wi-Fi and WiMax




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    Relation of Wi-Fi and WiMax

    • WiMax eliminates the constraints of Wi-Fi.
    • Unlike Wi-Fi, WiMax is intended to work outdoors over long distances.
    • WiMax is a more complex technology and has to handle issues of importance such as QoS guarantees, carrier-class reliability, NLOS.
    • WiMax is not intended to replace Wi-Fi. Instead, the two technologies complement each other.

    WiMax Standards

    • 802.16
    • 802.16a
    • 802.16-2004
    • 802.16e-2005
    • Date Completed
    • December 2001
    • January 2003
    • June 2004
    • December 2005
    • Spectrum
    • 10-66 GHz
    • < 11 GHz
    • < 11 GHz
    • < 6 GHz
    • Operation
    • LOS
    • Non-LOS
    • Non-LOS
    • Bit Rate
    • 32-134 Mbps
    • Up to 75 Mbps
    • Up to 75 Mbps
    • Up to 15 Mbps
    • Cell Radius
    • 1-3 miles
    • 3-5 miles
    • 3-5 miles
    • 1-3 miles

    WiMax is well suited to offer both fixed and mobile access

    How WiMax Works

    • WiMax can provide 2 forms of wireless service:
    • - Non-LOS, Wi-Fi sort of service, where a small antenna on a computer connects to the tower. Uses lower frequency range (2 to 11 GHz).
    • - LOS, where a fixed antenna points straight at the WiMax tower from a rooftop or pole. The LOS connection is stronger and more stable, so it is able to send a lot of data with fewer errors. Uses higher frequencies, with ranges reaching a possible 66 GHz.
    • Through stronger LOS antennas, WiMax transmitting stations would send data to WiMax enabled computers or routers set up within 30 (3,600 square miles of coverage) mile radius.

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