Dell PowerConnect W-Airwave User Manual page 13

To tune location accuracy, navigate to the Location Setting section on this page.
Setting Default
Allowed Deviation
for
Client Placement
Maximum
Rogue APs
per Floor Plan
To tune the frequency for calculating device locations within the VisualRF UI navigate to the Location
Calculation Timer Settings section.
Setting Default
Legacy Laptop Min/M
(sec):
Legacy Laptop
Number of
Samples
All of the other device types use the same methodology as detailed above.
Visual RF and Visual RF Plan | User Guide P
4 dB When VisualRF locates a client or rogue it utilizes signal metrics from all
the APs that hear the client or rogue device. VisualRF builds a fingerprint
location for all clients with similar transmit-power capability. All
subsequent clients that fall within the deviation will be placed on the same
location fingerprint or x, y coordinates.
Example: AP1 hears client1 at -72 and AP2 hears client 1 at -64. VisualRF
calculates the client's location to be at coordinates 100, 200. Client2 is
heard by AP1 at -71 and AP2 at -65. VisualRF will use the average of the
difference in signals (AP1 -72 and -71) to see if the client matches a pre-
calculated location fingerprint. 1 + 1 (differences in signals) / 2 (# of APs) =
1 which falls within the deviation of 2, hence the client would be located at
100,200.
20 Sets the maximum number of rogues AMP will place on a Floor.
Use this filter in combination with the RAPIDS Export Threshold configured
on the RAPIDS Setup page to intelligently control the number of rogue
devices displayed per floor.
Note: Increasing this value could increase the load on the server and the
clutter on the screen.
90/360 This timer determines how often to calculate location for legacy laptop
devices. Taken with the data samples the calculation would follow:
After minimum timer (90 seconds) check to see if the number of data
samples received from all APs that hear this client are greater than or
equal to the number of samples setting for legacy laptop devices (Default
of 3 data samples).
If so (Yes to question above) then recalculate the client device's location
based on the samples received.
If not (No to the question above) then wait until the number of sample
setting is met and recalculate. If the number of samples is never met, wait
until the maximum timer (360 seconds) and recalculate.
3 See definition above.
Description
Description
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