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CHAPTER
5-1
Site Survey Guide for Deploying Cisco 7920 IP Phones
OL-6315-01
5
Positioning Access Points and Antennas for
Site Surveys
When you perform a site survey, it is important to position wireless equipment for optimal coverage.
This chapter describes best practices for positioning access points and antennas.
Access Point Positioning
In industrial environments such as warehouses, a common installation point for access points is on
girders or I-beams. However, an I-beam reflects both received packets and transmitted packets, resulting
in poor signal quality because of nulls and high-strength mulitpath signals. Figure 5-1 shows the I-beam
installation and the resulting signal propagation. The null is created by the crossing of signal waves
shown in the scattered waveforms diagram. The multipath is shown as the multiple waves in the signal.
Figure 5-1 Access Point Installed on I-Beam