Cisco Cisco Aironet 1522 Lightweight Outdoor Mesh Access Point Guía De Diseño

See 

.

See the 

 for additional 

voice considerations when configuring voice on your network.

 provides a comparison of the 2.4-GHz and 5-GHz bands.

The 2.4-GHz band does provide better propagation characteristics than 5 GHz, but 2.4 GHz is an 
unlicensed band and has historically been affected with more noise and interference to date than the 
5-GHz band. In addition, because there are only three backhaul channels in 2.4 GHz, co-channel 
interference would result. Therefore, the best method to achieve comparable capacity is by reducing 
system gain (that is, transmit power, antenna gain, receive sensitivity, and path loss) to create smaller 
cells. Keep in mind that these smaller cells require more access points per square mile (greater access 
point density).

Therefore, 2.4 GHz has more penetration capability across the obstacles due to larger wavelength. In 
addition, 2.4 GHz has lower date rates which increases the success of the signal to reach the other end.

3 channels

20 channels

More prone to co-channel interference

No co-channel interference

Lower power

Higher power

Data rates less than 6 Mbps

Data rates 6 Mbps and greater (up to 54 Mbps).

Lower SNR requirements given lower data rates

Higher SNR requirements given higher data rates

Better propagation characteristics than 5 GHz but 
more susceptible to noise and interference

Worse propagation characteristics than 2.4 GHz 
but less susceptible to noise and interference

Unlicensed band. Widely available throughout the 
world.

Not as widely available in the world as 2.4-GHz. 
Licenses in some countries.