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

In addition to hidden node interference, co-channel interference can also impact performance. 
Co-channel interference occurs when adjacent radios on the same channel interfere with the performance 
of the local mesh network. This interference takes the form of collisions or excessive deferrals by 
CSMA. In both cases, performance of the mesh network is degraded. With appropriate channel 
management, co-channel interference on the wireless mesh network can be minimized.

This section provides a summary of items that must be considered for maximum wireless LAN coverage 
in an urban or suburban area, to adhere to compliance conditions for respective domains.

The following recommendations assume a flat terrain with no obstacles (green field deployment).

Cisco always recommends a site survey before taking any real estimations for the area and creating a bill 
of materials.

The RAP-to-MAP ratio is the starting point. For general planning purposes, the current ratio is 20 MAPs 
per RAP.

We recommend the following values for cell planning and distance in non-voice networks:

RAP-to-MAP ratio—Recommended maximum ratio is 20 MAPs per RAP.

AP-to-AP distance—A spacing of no more than of 2000 ft between each mesh access point is 
recommended. When you extend the mesh network on the backhaul (no client access), use a cell 
radius of 1000 ft.

Hop count—Three to four hops.

One square mile in ft (5280

2

), is nine cells and you can cover one square mile with 

approximately three or four hops. (See