Configuration > Wireless > 802.11b/g/n > RRM > TPC

The Configuration > Wireless > 802.11b/g/n > RRM > TPC enables you to edit the transmit power control (TPC) parameters. The parameters you can configure include:

Tx Power Level Assignment Algorithm

Parameter Description

Power Level Assignment Method

Dynamic transmit power assignment has three modes:
  • Automatic—(Default) The transmit power is periodically updated for all access points that permit this operation.
  • On Demand—The transmit power is updated when Invoke Power Update Now is clicked.
  • Fixed—No dynamic transmit power assignments occur and values are set to their global default.

Maximum Power Level Assignment (-10 to 30 dBm)

Maximum power level assignment on this radio.

Note   

If you configure a maximum transmit power, RRM does not allow any access point attached to the controller to exceed this transmit power level (whether the power is set by RRM TPC or by coverage hole detection). For example, if you configure a maximum transmit power of 11 dBm, then no access point would transmit above 11 dBm, unless the access point is configured manually.

The range is –10 to 30 dBm.

The default is 30.

Minimum Power Level Assignment (-10 to 30 dBm)

Minimum power level assignment on this radio.

The range is –10 to 30 dBm.

The default is –10.

Power Threshold

Cutoff signal level used by RRM when determining whether to reduce an access point’s power.

The default value for this parameter varies depending on the TPC version you choose. For TPCv1, the default value is –70 dBm, and for TPCv2, the default value is –67 dBm. The default value can be changed when access points are transmitting at higher (or lower) than desired power levels. The range for this parameter is –80 to –50 dBm.

Increasing this value (between –65 and –50 dBm) causes the access points to operate at higher transmit power rates. Decreasing the value has the opposite effect.

Note   

In applications with a dense population of access points, it may be useful to decrease the threshold to –80 or –75 dBm in order to reduce the number of BSSIDs (access points) and beacons seen by the wireless clients. Some wireless clients might have difficulty processing a large number of BSSIDs or a high beacon rate and might exhibit problematic behavior with the default threshold.

Power Neighbor Count

Minimum number of neighbors that an access point must have for the transmit power control algorithm to run.

Power Assignment Leader

Name and IP address of the power level assignment leader.

Last Power Level Assignment

Elapsed time since the last transmit power assignment in seconds.