Physical Wireless Site Survey

Physical Wireless Site Survey

A radio frequency (RF) site survey is the first step in any deployment of a Wireless network and the most important step to ensure desired operation. A site survey is a task-by-task process by which the surveyor studies the facility to understand the RF behaviour, discovers RF coverage areas, checks forRF interference and determines the appropriate and correct placement of Wireless devices.
In a Wireless network, many issues can arise which can prevent the radio frequency (RF) signal from reaching all parts of the facility. Examples of RF issues include multipath distortion, hidden nodeproblems, and near/far issues. In order to address these, you need to find the regions where these issues occur. A site survey helps you to do this. A site survey helps define the contours of RF coverage in a particular facility. It helps us to discover regions where multipath distortion can occur, areas where RF interference is high and find solutions to eliminate such issues. A site survey that determines the RF coverage area in a facility also helps to choose the number of Wireless devices that a firm needs to meet its business requirements. Finally it is a check that the required user density and device requirements are met.
  • Obtain a facility diagram in order to identify the potential radio frequency (RF) obstacles.
  • Visually inspect the facility to look for potential barriers or the propagation of RF signals and identify metal racks and microwave ovens.
  • Identify user areas that are highly used and the ones that are not used (user density).
  • Determine actual access point (AP) locations. These locations include the power and Wired Network access, cell coverage and overlap, channel selection, and Mounting locations (ceiling or wall) and any antenna considerations.
  • Perform the actual surveying in order to verify the AP location. Make sure to use the same AP model for the survey that is used inproduction. While the survey is performed, relocate APs as needed and re-test. Remember to check the
  • ‘Mesh’ capability if resilience is required.
  • Document the findings. Record the locations for required AP’s, wiring and power requirements and log of signal readings as well as data rates at the router boundaries.
  • Finally install the required wiring to AP locations as stated from survey results along with power needs.
Install and test the solution then perform post survey to confirm results.