Configuring Infrastructure; Deploying Aps For Client Location Accuracy - Dell PowerConnect W-Airwave User Manual

Dynamic Attenuation - enabling dynamic attenuation (which is on by default) instructs the location service
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to sample the current RF environment and to dynamically adjust Path Loss.

Configuring Infrastructure

Ensure that the hardware is configured to retrieve the RF information and that it provides this information on a
timely basis. There are three unique timing mechanisms which impact location accuracy: how often the
infrastructure collects and correlates RF statistics in their MIB, how often the AMP queries those MIB entries,
and how often VisualRF service queries AMP for this RF information.
Figure 212 Timing Factors Impacting Location Accuracy
These best practices are recommended when configuring hardware infrastructure:
For legacy autonomous APs, ensure on the Group > Radio page that Rogue Scanning is enabled and the

interval is accurate, as shown in
Figure 213 Group Rogue Scanning Configuration
For thin APs, ensure that the controllers are configured to gather RF information from the thin APs

frequently.
For Cisco LWAPP, navigate to Groups > Cisco WLC Config page in AMP. Navigate the tree control to the
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Wireless section, and for each PHY navigate to RRM > General section.
Figure 214 WLC RRM Configuration in AMP
Review the values in the Monitor Intervals section. These should be configured to a recommended setting of

180 for better accuracy.

Deploying APs for Client Location Accuracy

Deploying access points for client location accuracy can be different from deploying access points for capacity.
Follow these guidelines for best results:
Ensure that at least 3 radios can hear each client devices at -85 dBm or below
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Ensure that you deploy an access point approximately every 3,500 square feet.
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Dell PowerConnect W-AirWave | User Guide
Figure 213:
Using VisualRF | 275