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lizhongxiao
OpenXG-RAN
Commits
c73cada3
Commit
c73cada3
authored
7 years ago
by
Raymond Knopp
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added phich_common.c
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v2.1.0
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v1.2.1
v1.2.0
v1.1.1
v1.1.0
v1.0.3
v1.0.2
v1.0.1
v1.0.0
setparam
osa-etsi-ws-ue
osa-etsi-ws-try2
osa-etsi-ws-try1
osa-etsi-ws-gNB
oai_nr_sync
nr-ip-over-lte
nr-ip-over-lte-v.1.5
nr-ip-over-lte-v.1.4
nr-ip-over-lte-v.1.3
nr-ip-over-lte-v.1.2
nr-ip-over-lte-v.1.1
nr-ip-over-lte-v.1.0
flexran-eol
develop-nr-pdcch
develop-nr-2020w03
develop-nr-2020w02
develop-nr-2019w51
develop-nr-2019w50
develop-nr-2019w48
develop-nr-2019w47
develop-nr-2019w45
develop-nr-2019w43
develop-nr-2019w42
develop-nr-2019w40
develop-nr-2019w28
develop-nr-2019w23
benetel_phase_rotation
benetel_gnb_rel_2.0
benetel_gnb_rel_1.0
benetel_enb_rel_2.0
benetel_enb_rel_1.0
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openair1/PHY/LTE_TRANSPORT/phich_common.c
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c73cada3
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file PHY/LTE_TRANSPORT/phich_common.c
* \brief Top-level routines for generating and decoding the PHICH/HI physical/transport channel V8.6 2009-03
* \author R. Knopp
* \date 2011
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr
* \note
* \warning
*/
#include "PHY/defs_eNB.h"
uint8_t
get_mi
(
LTE_DL_FRAME_PARMS
*
frame_parms
,
uint8_t
subframe
)
{
// for FDD
if
(
frame_parms
->
frame_type
==
FDD
)
return
1
;
// for TDD
switch
(
frame_parms
->
tdd_config
)
{
case
0
:
if
((
subframe
==
0
)
||
(
subframe
==
5
))
return
(
2
);
else
return
(
1
);
break
;
case
1
:
if
((
subframe
==
0
)
||
(
subframe
==
5
))
return
(
0
);
else
return
(
1
);
break
;
case
2
:
if
((
subframe
==
3
)
||
(
subframe
==
8
))
return
(
1
);
else
return
(
0
);
break
;
case
3
:
if
((
subframe
==
0
)
||
(
subframe
==
8
)
||
(
subframe
==
9
))
return
(
1
);
else
return
(
0
);
break
;
case
4
:
if
((
subframe
==
8
)
||
(
subframe
==
9
))
return
(
1
);
else
return
(
0
);
break
;
case
5
:
if
(
subframe
==
8
)
return
(
1
);
else
return
(
0
);
break
;
case
6
:
return
(
1
);
break
;
default:
return
(
0
);
}
}
unsigned
char
subframe2_ul_harq
(
LTE_DL_FRAME_PARMS
*
frame_parms
,
unsigned
char
subframe
)
{
if
(
frame_parms
->
frame_type
==
FDD
)
return
(
subframe
&
7
);
switch
(
frame_parms
->
tdd_config
)
{
case
3
:
if
(
(
subframe
==
8
)
||
(
subframe
==
9
)
)
{
return
(
subframe
-
8
);
}
else
if
(
subframe
==
0
)
return
(
2
);
else
{
LOG_E
(
PHY
,
"phich.c: subframe2_ul_harq, illegal subframe %d for tdd_config %d
\n
"
,
subframe
,
frame_parms
->
tdd_config
);
return
(
0
);
}
break
;
case
4
:
if
(
(
subframe
==
8
)
||
(
subframe
==
9
)
)
{
return
(
subframe
-
8
);
}
else
{
LOG_E
(
PHY
,
"phich.c: subframe2_ul_harq, illegal subframe %d for tdd_config %d
\n
"
,
subframe
,
frame_parms
->
tdd_config
);
return
(
0
);
}
break
;
}
return
(
0
);
}
int
phich_frame2_pusch_frame
(
LTE_DL_FRAME_PARMS
*
frame_parms
,
int
frame
,
int
subframe
)
{
int
pusch_frame
;
if
(
frame_parms
->
frame_type
==
FDD
)
{
pusch_frame
=
subframe
<
4
?
frame
+
1024
-
1
:
frame
;
}
else
{
// Note this is not true, but it doesn't matter, the frame number is irrelevant for TDD!
pusch_frame
=
(
frame
);
}
//LOG_D(PHY, "frame %d subframe %d: PUSCH frame = %d\n", frame, subframe, pusch_frame);
return
pusch_frame
%
1024
;
}
uint8_t
phich_subframe2_pusch_subframe
(
LTE_DL_FRAME_PARMS
*
frame_parms
,
uint8_t
subframe
)
{
uint8_t
pusch_subframe
=
255
;
if
(
frame_parms
->
frame_type
==
FDD
)
return
subframe
<
4
?
subframe
+
6
:
subframe
-
4
;
switch
(
frame_parms
->
tdd_config
)
{
case
0
:
if
(
subframe
==
0
)
pusch_subframe
=
(
3
);
else
if
(
subframe
==
5
)
{
pusch_subframe
=
(
8
);
}
else
if
(
subframe
==
6
)
pusch_subframe
=
(
2
);
else
if
(
subframe
==
1
)
pusch_subframe
=
(
7
);
else
{
AssertFatal
(
1
==
0
,
"phich.c: phich_subframe2_pusch_subframe, illegal subframe %d for tdd_config %d
\n
"
,
subframe
,
frame_parms
->
tdd_config
);
pusch_subframe
=
(
0
);
}
break
;
case
1
:
if
(
subframe
==
6
)
pusch_subframe
=
(
2
);
else
if
(
subframe
==
9
)
pusch_subframe
=
(
3
);
else
if
(
subframe
==
1
)
pusch_subframe
=
(
7
);
else
if
(
subframe
==
4
)
pusch_subframe
=
(
8
);
else
{
AssertFatal
(
1
==
0
,
"phich.c: phich_subframe2_pusch_subframe, illegal subframe %d for tdd_config %d
\n
"
,
subframe
,
frame_parms
->
tdd_config
);
pusch_subframe
=
(
0
);
}
break
;
case
2
:
if
(
subframe
==
8
)
pusch_subframe
=
(
2
);
else
if
(
subframe
==
3
)
pusch_subframe
=
(
7
);
else
{
AssertFatal
(
1
==
0
,
"phich.c: phich_subframe2_pusch_subframe, illegal subframe %d for tdd_config %d
\n
"
,
subframe
,
frame_parms
->
tdd_config
);
pusch_subframe
=
(
0
);
}
break
;
case
3
:
if
(
(
subframe
==
8
)
||
(
subframe
==
9
)
)
{
pusch_subframe
=
(
subframe
-
6
);
}
else
if
(
subframe
==
0
)
pusch_subframe
=
(
4
);
else
{
AssertFatal
(
1
==
0
,
"phich.c: phich_subframe2_pusch_subframe, illegal subframe %d for tdd_config %d
\n
"
,
subframe
,
frame_parms
->
tdd_config
);
pusch_subframe
=
(
0
);
}
break
;
case
4
:
if
(
(
subframe
==
8
)
||
(
subframe
==
9
)
)
{
pusch_subframe
=
(
subframe
-
6
);
}
else
{
AssertFatal
(
1
==
0
,
"phich.c: phich_subframe2_pusch_subframe, illegal subframe %d for tdd_config %d
\n
"
,
subframe
,
frame_parms
->
tdd_config
);
pusch_subframe
=
(
0
);
}
break
;
case
5
:
if
(
subframe
==
8
)
{
pusch_subframe
=
(
2
);
}
else
{
AssertFatal
(
1
==
0
,
"phich.c: phich_subframe2_pusch_subframe, illegal subframe %d for tdd_config %d
\n
"
,
subframe
,
frame_parms
->
tdd_config
);
pusch_subframe
=
(
0
);
}
break
;
case
6
:
if
(
subframe
==
6
)
{
pusch_subframe
=
(
2
);
}
else
if
(
subframe
==
9
)
{
pusch_subframe
=
(
3
);
}
else
if
(
subframe
==
0
)
{
pusch_subframe
=
(
4
);
}
else
if
(
subframe
==
1
)
{
pusch_subframe
=
(
7
);
}
else
if
(
subframe
==
5
)
{
pusch_subframe
=
(
8
);
}
else
{
AssertFatal
(
1
==
0
,
"phich.c: phich_subframe2_pusch_subframe, illegal subframe %d for tdd_config %d
\n
"
,
subframe
,
frame_parms
->
tdd_config
);
pusch_subframe
=
(
0
);
}
break
;
default:
AssertFatal
(
1
==
0
,
"no implementation for TDD UL/DL-config = %d!
\n
"
,
frame_parms
->
tdd_config
);
pusch_subframe
=
(
0
);
}
LOG_D
(
PHY
,
"subframe %d: PUSCH subframe = %d
\n
"
,
subframe
,
pusch_subframe
);
return
pusch_subframe
;
}
int
check_pcfich
(
LTE_DL_FRAME_PARMS
*
frame_parms
,
uint16_t
reg
)
{
if
((
reg
==
frame_parms
->
pcfich_reg
[
0
])
||
(
reg
==
frame_parms
->
pcfich_reg
[
1
])
||
(
reg
==
frame_parms
->
pcfich_reg
[
2
])
||
(
reg
==
frame_parms
->
pcfich_reg
[
3
]))
return
(
1
);
return
(
0
);
}
void
generate_phich_reg_mapping
(
LTE_DL_FRAME_PARMS
*
frame_parms
)
{
unsigned
short
n0
=
(
frame_parms
->
N_RB_DL
*
2
)
-
4
;
// 2 REG per RB less the 4 used by PCFICH in first symbol
unsigned
short
n1
=
(
frame_parms
->
N_RB_DL
*
3
);
// 3 REG per RB in second and third symbol
unsigned
short
n2
=
n1
;
unsigned
short
mprime
=
0
;
unsigned
short
Ngroup_PHICH
;
// uint16_t *phich_reg = frame_parms->phich_reg;
uint16_t
*
pcfich_reg
=
frame_parms
->
pcfich_reg
;
// compute Ngroup_PHICH (see formula at beginning of Section 6.9 in 36-211
Ngroup_PHICH
=
(
frame_parms
->
phich_config_common
.
phich_resource
*
frame_parms
->
N_RB_DL
)
/
48
;
if
(((
frame_parms
->
phich_config_common
.
phich_resource
*
frame_parms
->
N_RB_DL
)
%
48
)
>
0
)
Ngroup_PHICH
++
;
// check if Extended prefix
if
(
frame_parms
->
Ncp
==
1
)
{
Ngroup_PHICH
<<=
1
;
}
#ifdef DEBUG_PHICH
LOG_D
(
PHY
,
"Ngroup_PHICH %d (phich_config_common.phich_resource %d,phich_config_common.phich_duration %s, NidCell %d,Ncp %d, frame_type %d), smallest pcfich REG %d, n0 %d, n1 %d (first PHICH REG %d)
\n
"
,
((
frame_parms
->
Ncp
==
NORMAL
)
?
Ngroup_PHICH
:
(
Ngroup_PHICH
>>
1
)),
frame_parms
->
phich_config_common
.
phich_resource
,
frame_parms
->
phich_config_common
.
phich_duration
==
normal
?
"normal"
:
"extended"
,
frame_parms
->
Nid_cell
,
frame_parms
->
Ncp
,
frame_parms
->
frame_type
,
pcfich_reg
[
frame_parms
->
pcfich_first_reg_idx
],
n0
,
n1
,
((
frame_parms
->
Nid_cell
))
%
n0
);
#endif
// This is the algorithm from Section 6.9.3 in 36-211, it works only for normal PHICH duration for now ...
for
(
mprime
=
0
;
mprime
<
((
frame_parms
->
Ncp
==
NORMAL
)
?
Ngroup_PHICH
:
(
Ngroup_PHICH
>>
1
));
mprime
++
)
{
if
(
frame_parms
->
phich_config_common
.
phich_duration
==
normal
)
{
// normal PHICH duration
frame_parms
->
phich_reg
[
mprime
][
0
]
=
(
frame_parms
->
Nid_cell
+
mprime
)
%
n0
;
if
(
frame_parms
->
phich_reg
[
mprime
][
0
]
>=
pcfich_reg
[
frame_parms
->
pcfich_first_reg_idx
])
frame_parms
->
phich_reg
[
mprime
][
0
]
++
;
if
(
frame_parms
->
phich_reg
[
mprime
][
0
]
>=
pcfich_reg
[(
frame_parms
->
pcfich_first_reg_idx
+
1
)
&
3
])
frame_parms
->
phich_reg
[
mprime
][
0
]
++
;
if
(
frame_parms
->
phich_reg
[
mprime
][
0
]
>=
pcfich_reg
[(
frame_parms
->
pcfich_first_reg_idx
+
2
)
&
3
])
frame_parms
->
phich_reg
[
mprime
][
0
]
++
;
if
(
frame_parms
->
phich_reg
[
mprime
][
0
]
>=
pcfich_reg
[(
frame_parms
->
pcfich_first_reg_idx
+
3
)
&
3
])
frame_parms
->
phich_reg
[
mprime
][
0
]
++
;
frame_parms
->
phich_reg
[
mprime
][
1
]
=
(
frame_parms
->
Nid_cell
+
mprime
+
(
n0
/
3
))
%
n0
;
if
(
frame_parms
->
phich_reg
[
mprime
][
1
]
>=
pcfich_reg
[
frame_parms
->
pcfich_first_reg_idx
])
frame_parms
->
phich_reg
[
mprime
][
1
]
++
;
if
(
frame_parms
->
phich_reg
[
mprime
][
1
]
>=
pcfich_reg
[(
frame_parms
->
pcfich_first_reg_idx
+
1
)
&
3
])
frame_parms
->
phich_reg
[
mprime
][
1
]
++
;
if
(
frame_parms
->
phich_reg
[
mprime
][
1
]
>=
pcfich_reg
[(
frame_parms
->
pcfich_first_reg_idx
+
2
)
&
3
])
frame_parms
->
phich_reg
[
mprime
][
1
]
++
;
if
(
frame_parms
->
phich_reg
[
mprime
][
1
]
>=
pcfich_reg
[(
frame_parms
->
pcfich_first_reg_idx
+
3
)
&
3
])
frame_parms
->
phich_reg
[
mprime
][
1
]
++
;
frame_parms
->
phich_reg
[
mprime
][
2
]
=
(
frame_parms
->
Nid_cell
+
mprime
+
(
2
*
n0
/
3
))
%
n0
;
if
(
frame_parms
->
phich_reg
[
mprime
][
2
]
>=
pcfich_reg
[
frame_parms
->
pcfich_first_reg_idx
])
frame_parms
->
phich_reg
[
mprime
][
2
]
++
;
if
(
frame_parms
->
phich_reg
[
mprime
][
2
]
>=
pcfich_reg
[(
frame_parms
->
pcfich_first_reg_idx
+
1
)
&
3
])
frame_parms
->
phich_reg
[
mprime
][
2
]
++
;
if
(
frame_parms
->
phich_reg
[
mprime
][
2
]
>=
pcfich_reg
[(
frame_parms
->
pcfich_first_reg_idx
+
2
)
&
3
])
frame_parms
->
phich_reg
[
mprime
][
2
]
++
;
if
(
frame_parms
->
phich_reg
[
mprime
][
2
]
>=
pcfich_reg
[(
frame_parms
->
pcfich_first_reg_idx
+
3
)
&
3
])
frame_parms
->
phich_reg
[
mprime
][
2
]
++
;
#ifdef DEBUG_PHICH
printf
(
"phich_reg :%d => %d,%d,%d
\n
"
,
mprime
,
frame_parms
->
phich_reg
[
mprime
][
0
],
frame_parms
->
phich_reg
[
mprime
][
1
],
frame_parms
->
phich_reg
[
mprime
][
2
]);
#endif
}
else
{
// extended PHICH duration
frame_parms
->
phich_reg
[
mprime
<<
1
][
0
]
=
(
frame_parms
->
Nid_cell
+
mprime
)
%
n0
;
frame_parms
->
phich_reg
[
1
+
(
mprime
<<
1
)][
0
]
=
(
frame_parms
->
Nid_cell
+
mprime
)
%
n0
;
frame_parms
->
phich_reg
[
mprime
<<
1
][
1
]
=
((
frame_parms
->
Nid_cell
*
n1
/
n0
)
+
mprime
+
(
n1
/
3
))
%
n1
;
frame_parms
->
phich_reg
[
mprime
<<
1
][
2
]
=
((
frame_parms
->
Nid_cell
*
n2
/
n0
)
+
mprime
+
(
2
*
n2
/
3
))
%
n2
;
frame_parms
->
phich_reg
[
1
+
(
mprime
<<
1
)][
1
]
=
((
frame_parms
->
Nid_cell
*
n1
/
n0
)
+
mprime
+
(
n1
/
3
))
%
n1
;
frame_parms
->
phich_reg
[
1
+
(
mprime
<<
1
)][
2
]
=
((
frame_parms
->
Nid_cell
*
n2
/
n0
)
+
mprime
+
(
2
*
n2
/
3
))
%
n2
;
//#ifdef DEBUG_PHICH
printf
(
"phich_reg :%d => %d,%d,%d
\n
"
,
mprime
<<
1
,
frame_parms
->
phich_reg
[
mprime
<<
1
][
0
],
frame_parms
->
phich_reg
[
mprime
][
1
],
frame_parms
->
phich_reg
[
mprime
][
2
]);
printf
(
"phich_reg :%d => %d,%d,%d
\n
"
,
1
+
(
mprime
<<
1
),
frame_parms
->
phich_reg
[
1
+
(
mprime
<<
1
)][
0
],
frame_parms
->
phich_reg
[
1
+
(
mprime
<<
1
)][
1
],
frame_parms
->
phich_reg
[
1
+
(
mprime
<<
1
)][
2
]);
//#endif
}
}
// mprime loop
}
// num_pdcch_symbols loop
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