User manual

Chapter 3 - Layer 2 Command Set - PHY and MAC MINT (“mint” command)
Alvarion BreezeNET B130/B300 GigE 46 Operational User Manual
Example:
mint rf5.0 poll start ub=250
3.2.2.6 Switching to Automatic Bitrate Control Mode
Syntax:
mint IFNAME -[no]autobitrate [+/-DB]
Enables/disables an automatic speed management mode.
In autobitrate mode every device controls the connection parameters
independently (amplitude of the received signal, number of ARQs on transmitting,
errors, SNR on the opposite side etc) and chooses such transmitting speed which
provides necessary conditions for a reliable work with minimum number of ARQs
and losses. Speed values can be different for each direction but it will be optimal.
When no autobitrate is used transmitting speed will be set according to the setting
of "bitr" parameter of "rfconfig" command. When autobitrate is used, transmitting
speed will be automatically adjusted according to current link conditions. The
ranges of speed will be in between the setting of "bitr" parameter in "rfconfig"
command (maximal speed) and "minbitrate" parameter (see below). If no
"minbitrate" is specified the minimal RF interface speed will be taken as a lowest
possible transmitting speed.
Minimal transmitting speed for autobitrate mode can be set with a help of the
following command:
mint IFNAME -minbitrate BITRATE
Example:
mint rf5.0 -autobitrate
mint rf5.0 -minbitrate 9000
+/-DB option influences the autobitrate function sensitivity. Autobitrate can be
forced to set a higher bitrate (mint IFNAME -autobitrate - <number in dB>) even if
the signal level is lower than expected on the specified number of dB. Or not to set
a higher bitrate (mint IFNAME -autobitrate + <number in dB>) till the signal level
won't become higher than expected on the specified number of dB. The default
value is "-6".
To disable the autobitrate mode the following command is used:
mint rf5.0 -fixedbitrate
In the fixedbitrate mode the actual bitrate is set with the "bitr" parameter of the
"rfconfig" command.