BelAir20E User Guide
Configuring Wi-Fi Radio Parameters
April 2, 2012
Confidential
Document Number BDTM02201-A01 Standard
Collision Aware
Rate Adaptation
/interface/wifi-<n>-<m>/set advanced-collision-ctrl
{enable|disable}
Collision Aware Rate Adaptation (CARA) is an advanced algorithm that turns
RTS on and off when it detects a collision. This allows frames that failed due to
the collision to get through without compromising the transmission rate (that
is, the RTS is sent at 1mpbs and clears the channel of collisions for the high rate
data packet).
By default, CARA is enabled.
Rate Aware
Fairness
/interface/wifi-<n>-<m>/set rate-aware-fairness {enable|disable}
Rate aware fairness is a transmission algorithm that chooses dynamic retreat
and progress thresholds based on the transmission rate of the station being
transmitted to, and the size of the packet.
Normally, when the AP has a client with a slower connection, all other clients
are throttled down to that same rate. Rate Aware Fairness overcomes this
issue by trying to give clients equal amounts of air-time instead of equal
numbers of packets.
By default, rate aware fairness is disabled.
802.11n
Aggregation
/interface/wifi-<n>-<m>/set tx-aggr {enable|disable}
This command applies to the HTM and DRU only.
This command enables or disables transmit aggregation for the radio. Transmit
aggregation is an 802.11n feature where multiple MSDUs or MPDUs are packed
together to reduce the overhead and average them over multiple frames, thus
increasing the user level data rate.
The default setting is
enable
.
Minimum Receive
Threshold
/interface/wifi-<n>-<m>/set rcv-rssi-threshold <dBM_threshold>
{disabled | enabled}
This command sets a minimum signal strength threshold to prevent associations
with weak radio signals. Associations are only created between radios with a
signal strength greater than the specified threshold.
The default setting is
disabled
.
