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The IEEE [1] defines standards for networking. The 802 series of
standards covers Ethernet (1M, 10M, 100M, 1G and soon 10G), Token
Ring, Token Bus _and_ wireless, which is 802.11 [2].
The original 802.11 [3] standard defined a MAC [4] layer, and three
PHY [5] layers: FHSS [6] (frequency hopping spread spectrum) radio,
DSSS [7] (direct sequence spread sprectrum) radio and a diffuse
infra-red layer. All PHY [8] layers worked at 1Mb, and the two radio
versions supported 2Mbit (raw) operation also, both in the 2.4GHz ISM
[9] (Industrial, Scientific and Medical) band.
Lucent [10] was a proponent of the DSSS [11] version, and Proxim was
pushing the FHSS [12]. Both were selling expensive cards and
AccessPoint [13]s to corporate users who really wanted them.
802.11b [14] is a revision of the DSSS [15] version to support
5.5Mbit and 11Mbit operation as well as the older 2 and 1Mbit rates.
See also: 802.11 [16], 802.11a [17] and 802.11g [18].
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Back to 802.11 [19]
Links:
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[1] http://www.melbournewireless.org.au/?IEEE
[2] http://www.melbournewireless.org.au/?802.11
[3] http://www.melbournewireless.org.au/?802.11
[4] http://www.melbournewireless.org.au/?MAC
[5] http://www.melbournewireless.org.au/?PHY
[6] http://www.melbournewireless.org.au/?FHSS
[7] http://www.melbournewireless.org.au/?DSSS
[8] http://www.melbournewireless.org.au/?PHY
[9] http://www.melbournewireless.org.au/?ISM
[10] http://www.melbournewireless.org.au/?Lucent
[11] http://www.melbournewireless.org.au/?DSSS
[12] http://www.melbournewireless.org.au/?FHSS
[13] http://www.melbournewireless.org.au/?AccessPoint
[14] http://www.melbournewireless.org.au/?802.11b
[15] http://www.melbournewireless.org.au/?DSSS
[16] http://www.melbournewireless.org.au/?802.11
[17] http://www.melbournewireless.org.au/?802.11a
[18] http://www.melbournewireless.org.au/?802.11g
[19] http://www.melbournewireless.org.au/?802.11
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