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CCNA Wireless 640-722 Official Cert Guide by David Hucaby

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Tuning Cell Size with Transmit Power

To use a wireless LAN, devices must be located within the range of an AP’s signal and have an active association with the AP. This area is known as the BSA or cell. Consider the scenario shown in Figure 7-1. PCs 1 through 4 are within the cell’s perimeter and are associated with the AP. PC-5, however, is outside the cell and cannot form an association or participate in the basic service set (BSS).

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Figure 7-1 An Example Cell That Includes All but One Client.

If the area outside a cell is a legitimate location where wireless devices might be present, the coverage area should probably be extended there. How ...

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