28
access point, helps control traffic flow. The range is 0-2347 bytes. The default value is 2347,
which means that RTS is disabled.
RTS/CTS
(Request to Send / Clear to send) are the mechanism used by the
802.11 wireless networking protocols to reduce frame collisions introduced by the
hidden terminal problem. RTS/CTS packet size threshold is 0-2347 bytes. If the
packet size the node wants to transmit is larger than the threshold, the RTS/CTS
handshake gets triggered. If the packet size is equal to or less than threshold the
data frame gets sent immediately.
System uses Request to Send/Clear to send frames for the handshake that
provide collision reduction for an access point with hidden stations. The stations
are sending a RTS frame first while data is sent only after a handshake with an AP
is completed. Stations respond with the CTS frame to the RTS, which provide
clear media for the requesting station to send the data. CTS collision control
management has a time interval defined during which all the other stations hold off
the transmission and wait until the requesting station will finish transmission.
Beacon Interval:
By default, it is set to 100ms. Higher Beacon interval will improve the
device’s wireless performance and is also power-saving for client side. If this value set
lower than 100ms, it will speed up the wireless client connection.
Preamble Type:
this option is to define the length of the sync field in an 802.11 packet.
Most modern wireless network uses shot preamble with 56 bit sync filed instead of long
preamble with 128 bit sync filed. However, some original 11b wireless network devices only
support long preamble.
IAPP
:
Inter-Access Point Protocol is designed for the enforcement of unique association
throughout an ESS (Extended Service Set) and for secure exchange of station’s security
context between current access point (AP) and new AP during handoff period. It is enabled
by default.
Protection:
it is disabled by default.
Aggregation:
A part of the 802.11n standard. It allows sending multiple frames per single
access to the medium by combining frames together into one larger frame. It creates the
larger frame by combining smaller frames with the same physical source and destination
end points and traffic class (i.e. QoS) into one large frame with a common MAC header. It is
enabled by default.
Frames
—determine the number of frames combined on the new larger frame.
Bytes
—determine the size (in Bytes) of the larger frame.
Short GI:
short Guide Interval. It is to assure the safety of propagation delays and
reflections for the sensitive digital data.
WLAN Partition:
divides the WLAN to several parts.
20/40MHz Coexist:
enable this function will make the device select the channel with better
performance automatically. It is enabled by default.
RF Output Power:
you can select the output power of the wireless device. The default
Summary of Contents for NG-192
Page 1: ...1 ...