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WIRELESS SURVEYS

Wireless Site Survey Methodology

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A wireless site survey, sometimes called an RF site survey or wireless survey, is the process of planning and designing a wireless network, to provide a wireless solution that will deliver the required wireless coverage, data rates, network capacity, roaming capability and quality of service. The survey involves a site visit to test for RF interference, look at existing spectrum usage, and to identify optimum installation locations for access points. This requires analysis of building floor plans, inspection of the facility, and use of site survey tools. Interviews with IT management and the end users expectations of the wireless network are also important . The survey is done using active and predictive tools. A laptop with a spectrum analysis hardware and software is used to walk through the areas to assess existing spectrum usage, it is important to document sources of high RF interference from non-802.11 sources, such as microwave ovens or cordless phones and, neighboring 802.11 sources. As part of the wireless site survey, the effective range boundary is set, which defines the area over which signal levels needed support the intended application. This involves determining the minimum signal to noise ratio (SNR) needed to support performance requirements. Wireless site survey is done my experience and walk testing. A proposed access point location is chosen and access point installed and powered at this location via a tripod and battery.

The area is then walk tested to determine coverage and then AP moved to a

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Hi-Density rooms (Lecture halls) require special design.

Wireless design issues are also considered. Autonomous Lightweight and Converged Access

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Antenna Selection is important especially in warehouse design

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Long racking coverage...

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Redundancy issues, Controller Selection, and POE requirements considered.

Point to Point over the road links.

Mining surveys.

Charles Clare

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