<s>
In	O
wireless	B-General_Concept
networks	I-General_Concept
,	O
the	O
exposed	B-General_Concept
node	I-General_Concept
problem	I-General_Concept
occurs	O
when	O
a	O
node	O
is	O
prevented	O
from	O
sending	O
packets	O
to	O
other	O
nodes	O
because	O
of	O
co-channel	O
interference	O
with	O
a	O
neighboring	O
transmitter	O
.	O
</s>
<s>
The	O
exposed	B-General_Concept
node	I-General_Concept
problem	I-General_Concept
is	O
not	O
an	O
issue	O
in	O
cellular	O
networks	O
as	O
the	O
power	O
and	O
distance	O
between	O
cells	O
is	O
controlled	O
to	O
avoid	O
it	O
.	O
</s>
