Calibrating The Tracking Engine - Nortel 2340 Configuration Manual

Scenario 3
The Location AP placement in the diagram on the left results in Locale 1 and Locale 6 having identical RF fingerprints.
The diagram on the right corrects the problem.

Calibrating the Tracking Engine

Once the Location APs are deployed the next step is to capture the RF data which, the Nortel WLAN Location Engine
uses to identify each locale in the area under surveillance. This process is referred to as calibration.
The calibration of your site is an iterative process:
1
Create enough RF fingerprints to achieve the granularity of device tracking you require in each part of the
area under surveillance:
• inside or outside the physical perimeter
• in a department
• in a room.
2
Use the Evaluator to examine the calibration for problems such as,
• missing data
• conflicting data
• inconsistent data
3
Walk-through the site with a wireless device and note those locales in which either of the following
occurs:
• you need to walk too far into a locale before the Tracking Engine recognizes the new position of
the device (latency)
• the Tracking Engine tracks the device to the wrong locale (accuracy).
Nortel WLAN Location Engine 2340 Web GUI 31
Nortel WLAN - Location Engine 2340 Configuration - Using Interfaces