Why I love CCI

NETWORL ADMIN STRESSED BY WI-FI PERFROMANCE | WI-FI SLOW DOWN

Co-Channel Interference Channel 1

Channel 1

This is Bad? WARRNING CCI!

CH6

BSS #1

CH6

BSS #2

But this is OK? Do we have CCI here?

CH6

BSS #1 BSS #2

Are these equal?

CH6

BSS #1

CH6 CH6

BSS #2

BSS #1 BSS #2

Are these equal?

CH6

BSS #1

CH6

BSS #2

10 STAs contending for access to CH6

CH6

BSS #1

10 STAs contending for access to CH6

Which is worst?

CH6

BSS #1

CH6

BSS #2

6 STAs contending for access to CH6

CH6

BSS #1

10 STAs contending for access to CH6

Co-Channel Interference

Contention OR DCF (Distributed Coordination Function)

Don’t get me wrong This

is better them

CH1

In wireless deign we should attempt to minimise are CH6the number clients which CH6 contending for each channel

BSS #1

BSS #1

this …..

BSS #1

….. But CCI is not always bad!

CH6

BSS #1

CCI Heatmaps

In Ekahau select associated channel

Disabling 2.4GHz Radios 20 users assorted to each AP each AP

Channel 1

Channel 6

Where do these clients go? Channel 11

Channel 1

Why Do I Love CCI? • Because it is DCF in action which is fundamental to how Wi-Fi works • Wi-Fi would not work with out it.

I CCI