5G TDD下行速率计算.pdf
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4.1.2
Max
data
rate
without
ue
-CategoryDL
and
ue
-CategoryUL
For
NR,
the
approximate
data
rate
for
a
given
number
of
aggregated
carriers
in
a
band
or
band
combination
is
computed
as
follows.
J
j
j
s
j
BW
PRB
j
j
m
j
OH
T
N
R
f
Q
v
Layers
1
)
(
),
(
max
)
(
)
(
)
(
6
1
12
10
Mbps)
(in
rate
data
wherein
J
is
the
number
of
aggregated
component
carriers
in
a
band
or
band
combination
R
max
=
948/1024
For
the
j-th
CC,
is
the
maximum
number
of
layers
)
(
j
m
Q
is
the
maximum
modulation
order
)
(
j
f
is
the
scaling
factor
The
scaling
factor
can
take
the
values
1,
0.8,
0.75,
and
0.4.
)
(
j
f
is
signalled
per
band
and
per
band
per
band
combination
is
the
numerology
(as
defined
in
TS
38.211
[6])
s
T
is
the
average
OFDM
symbol
duration
in
a
subframe
for
numerolog
y
,
i.e.
2
14
10
3
s
T
.
Note
that
normal
cyclic
prefix
is
assumed.
,j
BW
PRB
N
is
the
maximum
RB
allocation
in
bandwidth
j
BW
with
numerology
,
as
defined
in
5.3
TS
38.101-1
[2]
and
5.3
TS
38.101-2
[3],
where
j
BW
is
the
UE
supported
maximum
bandwidth
in
the
given
band
or
band
combination.
)
(
j
OH
is
the
overhead
and
takes
the
following
values
[0.14],
for
frequency
range
FR1
for
DL
[0.18],
for
frequency
range
FR2
for
DL
[0.08],
for
frequency
range
FR1
for
UL
[0.10],
for
frequency
range
FR2
for
UL
NOTE:
Only
one
of
the
UL
or
SUL
carriers
(the
one
with
the
higher
data
rate)
is
counted
for
a
cell
operating
SUL.
The
approximate
maximum
data
rate
can
be
computed
as
the
maximum
of
the
approximate
data
rates
computed
using
the
above
formula
for
each
of
the
supported
band
or
band
combinations.
)
(
j
Layers
v
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