M5350
3G Mobile Wi-Fi User Guide
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Appendix D: Glossary
802.11n -
802.11n builds upon previous 802.11 standards by adding MIMO (multiple-input
multiple-output). MIMO uses multiple transmitter and receiver antennas to allow for increased
data throughput via spatial multiplexing and increased range by exploiting the spatial diversity,
perhaps through coding schemes like Alamouti coding. The Enhanced Wireless Consortium
(EWC) [3] was formed to help accelerate the IEEE 802.11n development process and
promote a technology specification for interoperability of next-generation wireless local area
networking (WLAN) products.
802.11b -
The 802.11b standard specifies a wireless networking at 11 Mbps using
direct-sequence spread-spectrum (DSSS) technology and operating in the unlicensed radio
spectrum at 2.4GHz, and WEP encryption for security. 802.11b networks are also referred to
as Wi-Fi networks.
802.11g -
specification for wireless networking at 54 Mbps using direct-sequence
spread-spectrum (DSSS) technology, using OFDM modulation and operating in the
unlicensed radio spectrum at 2.4GHz, and backward compatibility with IEEE 802.11b devices,
and WEP encryption for security.
DHCP
(
D
ynamic
H
ost
C
onfiguration
P
rotocol)
-
A protocol that automatically configure the
TCP/IP parameters for the all the PC(s) that are connected to a DHCP server.
ISP
(
I
nternet
S
ervice
P
rovider)
-
A company that provides access to the Internet.
SSID -
A
S
ervice
S
et
Id
entification is a thirty-two character (maximum) alphanumeric key
identifying a wireless local area network. For the wireless devices in a network to
communicate with each other, all devices must be configured with the same SSID. This is
typically the configuration parameter for a wireless PC card. It corresponds to the ESSID in
the wireless Access Point and to the wireless network name.
WEP
(
W
ired
E
quivalent
P
rivacy)
-
A data privacy mechanism based on a 64-bit or 128-bit
shared key algorithm, as described in the IEEE 802.11 standard.
Wi-Fi -
A trade name for the 802.11b wireless networking standard, given by the Wireless
group promoting interoperability among 802.11b devices.
WLAN
(
W
ireless
L
ocal
A
rea
N
etwork)
-
A group of computers and associated devices
communicate with each other wirelessly, which network serving users are limited in a local
area.
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