Installation guide

2
Wi-Fi Location-Based Services—Design and Deployment Considerations
OL-11612-01
Contents
Rogue Access Points 35
Rogue Clients 39
Installation and Configuration 41
Installing and Configuring the Location Appliance 41
Configuring the Wireless Control System for Location Tracking 41
Configuring Location Server History Parameters 41
Configuring Location Server Advanced Parameters 43
Configuring Location Server Location Parameters 45
Configuring Location Server Notification Parameters 46
Location Appliance Dual Ethernet Operation 47
Changing Default Passwords for the Location Appliance 47
Changing the “root” User Linux System Password 47
Changing the “admin” Location Server Application Password 47
Location Appliance Time Synchronization 49
Quiescing the Location Appliance 50
Deployment Best Practices 51
“Location-Aware” WLAN Design Considerations 51
Minimum Signal Level Thresholds 51
Access Point Placement Considerations 54
Access Point Density Considerations 55
Determining Location Readiness 57
Avoiding Excessive Co-Channel Interference 60
Avoiding Location Display Jitter with Location Smoothing 61
Avoiding Location Misdetection in Multi-Floor Structures 62
Using Multiple Location Appliances in Larger Designs 65
Antenna Considerations 70
Site Calibration 72
Location Tracking Challenges 80
Outdoor Environments 80
Non-Uniform Environments 80
Small Sites 81
Antenna Installation Height 81
Traffic Considerations 82
Traffic Between the Location Appliance and WLAN Controllers 82
Traffic Between the Location Appliance and WCS 85
RFID Tag Considerations 86
RFID Tag Technology 86
Passive RFID Tags 87
Active RFID Tags 91