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D-46 Psion Teklogix 9160 G2 Wireless Gateway User Manual

Appendix D: Glossary

802.3

IEEE 802.3 (IEEE Std. 802.3-2002) defines the MAC layer for networks that use CSMA/CA.

Ethernet is an example of such a network.

802.11

IEEE 802.11 (IEEE Std. 802.11-1999) is a medium access control (MAC) and physical layer

(PHY) specification for wireless connectivity for fixed, portable, and moving stations within

a local area. It uses direct sequence spread spectrum (DSSS) in the 2.4 GHz ISM band and

supports raw data rates of 1 and 2 Mbps. It was formally adopted in 1997 but has been

mostly superseded by 802.11b.

IEEE 802.11 is also used generically to refer to the family of IEEE standards for wireless

local area networks.

802.11a

IEEE 802.11a (IEEE Std. 802.11a-1999) is a PHY standard that specifies operating in the 5 GHz

U-NII band using orthogonal frequency division multiplexing (OFDM). It supports data

rates ranging from 6 to 54 Mbps.

802.11a Turbo

IEEE 802.11a Turbo is a proprietary variant of the 802.11a standard from Atheros

Communications. It supports accelerated data rates ranging from 6 to 108Mbps. Atheros Turbo

5 GHz is IEEE 802.11a Turbo mode. Atheros Turbo 2.4 GHz is IEEE 802.11g Turbo mode.

802.11b

IEEE 802.11b (IEEE Std. 802.11b-1999) is an enhancement of the initial 802.11 PHY to include

5.5 Mbps and 11 Mbps data rates. It uses direct sequence spread spectrum (DSSS) or

frequency hopping spread spectrum (FHSS) in the 2.4 GHz ISM band as well as

complementary code keying (CCK) to provide the higher data rates. It supports data rates

ranging from 1 to 11 Mbps.

802.11d

IEEE 802.11d defines standard rules for the operation of IEEE 802.11 wireless LANs in any

country without reconfiguration. PHY requirements such as provides frequency hopping

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Psion Teklogix 9160 G2 Manual de usuario Pagina 396