<s>
Proportional-fair	B-Algorithm
scheduling	I-Algorithm
is	O
a	O
compromise-based	O
scheduling	O
algorithm	O
.	O
</s>
<s>
Proportionally	B-Algorithm
fair	I-Algorithm
scheduling	I-Algorithm
can	O
be	O
achieved	O
by	O
means	O
of	O
weighted	B-Algorithm
fair	I-Algorithm
queuing	I-Algorithm
(	O
WFQ	B-Algorithm
)	O
,	O
by	O
setting	O
the	O
scheduling	O
weights	O
for	O
data	O
flow	O
to	O
,	O
where	O
the	O
cost	O
is	O
the	O
amount	O
of	O
consumed	O
resources	O
per	O
data	O
bit	O
.	O
</s>
<s>
In	O
CDMA	B-Protocol
spread	O
spectrum	O
cellular	O
networks	O
,	O
the	O
cost	O
may	O
be	O
the	O
required	O
energy	O
per	O
bit	O
in	O
the	O
transmit	O
power	O
control	O
(	O
the	O
increased	O
interference	O
level	O
)	O
.	O
</s>
<s>
In	O
wireless	O
communication	O
with	O
link	B-Protocol
adaptation	I-Protocol
,	O
the	O
cost	O
may	O
be	O
the	O
required	O
time	O
to	O
transmit	O
a	O
certain	O
number	O
of	O
bits	O
using	O
the	O
modulation	O
and	O
error	O
coding	O
scheme	O
that	O
this	O
required	O
.	O
</s>
<s>
In	O
wireless	O
networks	O
with	O
fast	O
Dynamic	B-Protocol
Channel	I-Protocol
Allocation	I-Protocol
,	O
the	O
cost	O
may	O
be	O
the	O
number	O
of	O
nearby	O
base	O
station	O
sites	O
that	O
can	O
not	O
use	O
the	O
same	O
frequency	O
channel	O
simultaneously	O
,	O
in	O
view	O
to	O
avoid	O
co-channel	O
interference	O
.	O
</s>
<s>
Using	O
and	O
will	O
yield	O
the	O
proportional	B-Algorithm
fair	I-Algorithm
scheduling	O
algorithm	O
used	O
in	O
3G	O
networks	O
.	O
</s>
<s>
The	O
proportional	B-Algorithm
fair	I-Algorithm
(	O
and	O
)	O
scheduler	O
could	O
be	O
called	O
"	O
equal	O
effort	O
scheduler	O
"	O
or	O
"	O
time/spectrum	O
Round	O
Robin	O
scheduler	O
"	O
.	O
</s>
