Dual-Band Surveys
When you survey a site that includes dual-band APs, providing both 2.4-GHz and 5-GHz support, set up two client profiles, one for each band. It is also recommended that different SSIDs be used for the different bands if a dual-band card is used for the survey client. Using the same SSID can cause confusion if the client actually is using 2.4 while you are trying to survey at 5 GHz.When conducting a dual-band site survey, the survey itself is typically done at 5 GHz, which has a smaller coverage area. Before making this assumption, however, perform a test using the actual components that will be installed. Follow the density test and determine the cell boundaries for each band. From that information, select the product that has the lowest coverage. This will typically be 5 GHz.Then reduce the power of the other larger-coverage radios (typically 2.4 GHz) in the APs until the cell boundaries are similar for both bands. When performing the survey itself, use these settings to start. When a location has been determined for an AP, run a test for both bands and document the results. In some locations where multipath is high or certain contents affect the signal (such as high moisture content of materials stored in the facility, which hinders 2.4-GHz signals more than 5-GHz signals), you might have to alter the power levels. You must document these differences for the installer and the IT staff. |
لطفا منتظر باشید ...
