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Cisco 2700 Series Wireless Location Appliance Deployment Guide
OL-8478-01
Deployment and Design Requirements
Figure8 Improved Location Accuracy by Staggering Around Perimeter
5. Designing a location-aware wireless LAN, while planning for voice as well, is better done with a
few things in mind. Most current wireless handsets support only 802.11b, which only offers three
non-overlapping channels. Therefore, wireless LANs designed for telephony tend to be less dense
than those planned to carry data. Also, when traffic is queued in the Platinum QoS bucket (typically
reserved for voice and other latency sensitive traffic), lightweight access points postpone their
scanning functions that allow them to peak at other channels and collect, among other things, device
location information. As such, the user has the option to supplement the wireless LAN deployment
with access points set to monitor-only mode. Access points that only perform monitoring functions
do not provide service to clients and do not create any interference. They simply scan the airwaves
for device information (see Figure9).
Figure9 Less Dense Wireless LAN Installations
Less dense wireless LAN installations, such as those of voice networks, find their location fidelity
greatly increased by the addition and proper placement of monitor access points.
6. Perform a coverage verification using a wireless laptop, handheld, and possibly a phone to ensure
that no fewer than 3 access points are detected by the device. To verify client and asset tag location,
ensure that WCS reports client devices and tags within the specified accuracy range (10m, 90%).
Creating a Network Design in WCSAfter access points have been installed and have joined a controller, and WCS has been configured to
manage the controllers, a network design needs to be set up. A network design is a representation within
WCS of the physical placement of access points throughout facilities. A hierarchy of a single campus,