User's Manual

35
INDEX
This chapter provides solutions to problems usually encountered during the installation and operation of the
adapter.
1. What is the IEEE 802.11n standard?
802.11n is an IEEE 802.11 wireless network standard that increases transmission speeds from a
traditional 11Mbps (802.11b) to over 100Mbps. Currently, the HWDN2 supports up to 150Mbps. 802.11n
can handle legacy 11b and 11g transmission in a mixed mode or only 11n nodes for maximum
performance. It supports the 2.4GHz frequency bands.
The key to the 802.11n standard is the use of multiple antennas, known as MIMO (Multiple input/multiple
output). MIMO technology enables two data streams, transmitter and receiver, to be sent simultaneously
over longer distances and to improve the overall system performance.
2. What does IEEE 802.11 feature support？
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The product supports the following IEEE 802.11 functions:
 CSMA/CA plus Acknowledge Protocol
 Multi-Channel Roaming
 Automatic Rate Selection
 RTS/CTS Feature
 Fragmentation
 Power Management
3. What is Ad-hoc？
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An Ad-hoc integrated wireless LAN is a group of computers, each has a Wireless LAN adapter,
Connected as an independent wireless LAN. Ad hoc wireless LAN is applicable at a departmental scale
for a branch or SOHO operation.
4. What is Infrastructure？
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An integrated wireless and wireless and wired LAN is called an Infrastructure configuration. Infrastructure
is applicable to enterprise scale for wireless access to central database, or wireless application for mobile
workers.
5. What is BSS ID？
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A specific Ad hoc LAN is called a Basic Service Set (BSS). Computers in a BSS must be configured with
the same BSS ID.
6. What is WEP？
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WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 40 bit shared key algorithm, as
described in the IEEE 802 .11 standard.