WirelessMAN
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WirelessMAN is the official name trademarked by the IEEE 802.16 Working Group on Broadband Wireless Access Standards for its wireless metropolitan area network standard (commercially known as WiMAX), which defines broadband Internet access from fixed or mobile devices via antennas. Subscriber stations communicate with base-stations that are connected to a core network. This is an alternative to fixed line networks that is simple to build and relatively inexpensive.
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[edit] Protocols
[edit] IEEE 802.16
IEEE 802.16 refers to a family of IEEE standards which specify the WirelessMAN Air Interface for wireless metropolitan area networks. The first revision of the standard was completed in October 2001 and originally published on 8 April 2002.
The protocol is a “last mile” technique which uses radio frequency energy between 10 and 66 GHz. Because of the short wavelength, line of sight is required. The standard supports point-to-multipoint topology, frequency-division duplex (FDD) and time-division duplex (TDD) in a consistent framework and full quality of service (QoS). With QoS it is possible to send sound, video, and data with different priorities. Speed varies with distance but the theoretical maximum lies around 70 Mbit/s.
