User's Manual

Wireless LAN
Page 18 Wireless LAN 11 Mbps User manual
Network Mode
This field allows you to select from a list of supported Network “Modes”. The modes displayed will
have two values: “ Ad Hoc”, and “Infrastructure”.
Ad Hoc - This is the 802.11 peer-to-peer mode of operation. In 802.11Ad Hoc only one wireless
“cell” is supported for each different SSID. All communication is done from Client to Client without
the use of an Access Point. 802.11 Ad Hoc networking use the same SSID for establishing the
wireless connection.
Infrastructure - This mode of operation requires the presence of an 802.11 Access Point. All
communication is done via the Access Point, which relays packets to other wireless Clients in
the BSS as well as to nodes on a wired network such as Ethernet.
Preamble
Two different preambles and headers are defined: the mandatory supported Long Preamble
and header, which inter-operates with the current 1 Mbit/s and 2 Mbit/s DSSS specification (as
described in IEEE Std 802.11, and an optional Short Preamble and header. The optional Short
Preamble and header is intended for applications where maximum throughput is desired and
interoperability with legacy and non-short-preamble capable equipment is not a consideration.
That is, it is expected to be used only in networks of like equipment, which can all handle the
optional mode.
TX Rate
The transmission rate at which the data packets are transmitted by client of AP. You can set this
to fixed 1Mbps, fixed 2 Mbps, fixed 5.5 Mbps or fixed 11 Mbps.
“Update” button
This button becomes active only when one of the fields has been modified. Pressing this button
applies the changed values to the driver and saves them to the registry for the next time the PC
boots up.