Tracking Precision; Locales; Location Aps; Rf Fingerprints - Nortel 2340 Configuration Manual

14 Device tracking concepts and features

Tracking Precision

The Nortel WLE2340 Tracking Engine can be configured to provide a spectrum of tracking precision. The greater the
precision, more the RF Fingerprints are required. For example:
• Physical Perimeter: Device location is reported as inside or outside your company's physical perimeter.
• Department: Device location is reported as inside a specific department within the physical perimeter or outside the
physical perimeter.
• Room: Device location is reported as inside a specific room within the physical perimeter or outside the physical
perimeter.

Locales

During calibration, a name is assigned to each discrete area that the Nortel WLE2340 monitors. In an office building,
Locales can be named as Conference Room, Lobby, and Engineering Lab. In a corporate campus or multi-building
manufacturing facility, Locales can be named as Warehouse 1, Warehouse2, and Warehouse3. Locales can be of any
size, for example, a 500 square foot room or a 20,000 square foot warehouse.
The number of Locales you create, can be named as many as required discrete Locales to match the precision level of
tracking that you are implementing. Locale names correspond to buildings, floors, departments, or rooms. For example,
for room level tracking precision, you create one locale for every room.

Location APs

The Nortel WLE Tracking Engine relies on Location APs to monitor the airwaves for 802.11 traffic and report data that
the Nortel WLE(2340) Tracking Engine uses to match the RF fingerprint of a device's current location to the RF finger-
prints it has on file.

RF Fingerprints

The Nortel WLE2340 creates RF Fingerprints by analyzing the RF characteristics of the space under surveillance. This
RF data is automatically captured during the calibration phase of the deployment. Each RF Fingerprint created must be
'bound' (associated) with a Locale.
The number of RF Fingerprints that can be captured is directly proportional to the following:
• size of the locales
• size of the building
• precision of tracking required
For more information on metrics for each level of tracking, see 'Deployment Types for Different Tracking Types'
chapter.
NN47250-504 (324122-A Version 01.01)