<s>
A	O
contention-based	B-General_Concept
protocol	I-General_Concept
(	O
CBP	O
)	O
is	O
a	O
communications	O
protocol	O
for	O
operating	O
wireless	O
telecommunication	O
equipment	O
that	O
allows	O
many	O
users	O
to	O
use	O
the	O
same	O
radio	O
channel	O
without	O
pre-coordination	O
.	O
</s>
<s>
The	O
"	O
listen	B-General_Concept
before	I-General_Concept
talk	I-General_Concept
"	O
operating	O
procedure	O
in	O
IEEE	O
802.11	O
is	O
the	O
most	O
well	O
known	O
contention-based	B-General_Concept
protocol	I-General_Concept
.	O
</s>
