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Michael Black
OpenXG-RAN
Commits
4c30e6d3
Commit
4c30e6d3
authored
Mar 26, 2020
by
Francesco Mani
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new file for prach dummy functions to avoid compilation failures on physim
parent
e451ff54
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349 additions
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340 deletions
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openair1/SIMULATION/NR_PHY/nr_dummy_functions.c
openair1/SIMULATION/NR_PHY/nr_dummy_functions.c
+1
-340
openair1/SIMULATION/NR_PHY/nr_dummy_functions_prach.c
openair1/SIMULATION/NR_PHY/nr_dummy_functions_prach.c
+348
-0
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openair1/SIMULATION/NR_PHY/nr_dummy_functions.c
View file @
4c30e6d3
int
oai_nfapi_hi_dci0_req
(
nfapi_hi_dci0_request_t
*
hi_dci0_req
)
{
return
(
0
);
}
int
oai_nfapi_hi_dci0_req
(
nfapi_hi_dci0_request_t
*
hi_dci0_req
)
{
return
(
0
);
}
int
oai_nfapi_tx_req
(
nfapi_tx_request_t
*
tx_req
)
{
return
(
0
);
}
int
oai_nfapi_tx_req
(
nfapi_tx_request_t
*
tx_req
)
{
return
(
0
);
}
int
oai_nfapi_dl_config_req
(
nfapi_dl_config_request_t
*
dl_config_req
)
{
return
(
0
);
}
int
oai_nfapi_dl_config_req
(
nfapi_dl_config_request_t
*
dl_config_req
)
{
return
(
0
);
}
int
oai_nfapi_ul_config_req
(
nfapi_ul_config_request_t
*
ul_config_req
)
{
return
(
0
);
}
//
int oai_nfapi_ul_config_req(nfapi_ul_config_request_t *ul_config_req) { return(0); }
//int oai_nfapi_nr_dl_config_req(nfapi_nr_dl_config_request_t *dl_config_req) { return(0); }
//int oai_nfapi_nr_dl_config_req(nfapi_nr_dl_config_request_t *dl_config_req) { return(0); }
int32_t
get_uldl_offset
(
int
nr_bandP
)
{
return
(
0
);
}
int32_t
get_uldl_offset
(
int
nr_bandP
)
{
return
(
0
);
}
NR_IF_Module_t
*
NR_IF_Module_init
(
int
Mod_id
)
{
return
(
NULL
);}
NR_IF_Module_t
*
NR_IF_Module_init
(
int
Mod_id
)
{
return
(
NULL
);}
int
dummy_nr_ue_dl_indication
(
nr_downlink_indication_t
*
dl_info
)
{
return
(
0
);
}
int
dummy_nr_ue_dl_indication
(
nr_downlink_indication_t
*
dl_info
)
{
return
(
0
);
}
int
dummy_nr_ue_ul_indication
(
nr_uplink_indication_t
*
ul_info
)
{
return
(
0
);
}
int
dummy_nr_ue_ul_indication
(
nr_uplink_indication_t
*
ul_info
)
{
return
(
0
);
}
/*
* 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 ra_procedures.c
* \brief Routines for UE MAC-layer Random Access procedures (TS 38.321, Release 15)
* \author R. Knopp, Navid Nikaein, Guido Casati
* \date 2019
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr navid.nikaein@eurecom.fr, guido.casati@iis.fraunhofer.de
* \note
* \warning
*/
#include "mac.h"
/*
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "PHY_INTERFACE/phy_interface_extern.h"
#include "SCHED_UE/sched_UE.h"
#include "COMMON/mac_rrc_primitives.h"
#include "RRC/LTE/rrc_extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "common/utils/LOG/log.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "PHY/LTE_ESTIMATION/lte_estimation.h"*/
/* Tools */
#include "SIMULATION/TOOLS/sim.h" // for taus
/* RRC */
#include "NR_RACH-ConfigCommon.h"
/* PHY */
#include "PHY/NR_TRANSPORT/nr_transport_common_proto.h"
#include "PHY/defs_common.h"
#include "PHY/defs_nr_common.h"
#include "PHY/NR_UE_ESTIMATION/nr_estimation.h"
/* MAC */
#include "LAYER2/NR_MAC_COMMON/nr_mac_extern.h"
#include "NR_MAC_COMMON/nr_mac.h"
#include "LAYER2/NR_MAC_UE/mac_proto.h"
extern
int64_t
table_6_3_3_2_2_prachConfig_Index
[
256
][
9
];
extern
int64_t
table_6_3_3_2_3_prachConfig_Index
[
256
][
9
];
//extern uint8_t nfapi_mode;
// WIP
// This routine implements Section 5.1.2 (UE Random Access Resource Selection)
// and Section 5.1.3 (Random Access Preamble Transmission) from 3GPP TS 38.321
void
nr_get_prach_resources
(
module_id_t
mod_id
,
int
CC_id
,
uint8_t
gNB_id
,
uint8_t
t_id
,
uint8_t
first_Msg3
,
NR_PRACH_RESOURCES_t
*
prach_resources
,
NR_RACH_ConfigDedicated_t
*
rach_ConfigDedicated
){
NR_UE_MAC_INST_t
*
mac
=
get_mac_inst
(
mod_id
);
NR_RACH_ConfigCommon_t
*
nr_rach_ConfigCommon
;
// NR_BeamFailureRecoveryConfig_t *beam_failure_recovery_config = &mac->RA_BeamFailureRecoveryConfig; // todo
int
messagePowerOffsetGroupB
,
messageSizeGroupA
,
PLThreshold
,
sizeOfRA_PreamblesGroupA
,
numberOfRA_Preambles
,
i
,
deltaPreamble_Msg3
;
uint8_t
noGroupB
=
0
,
s_id
,
f_id
,
ul_carrier_id
,
msg1_FDM
,
prach_ConfigIndex
,
SFN_nbr
,
Msg3_size
;
// NR_RSRP_Range_t rsrp_ThresholdSSB; // todo
///////////////////////////////////////////////////////////
//////////* UE Random Access Resource Selection *//////////
///////////////////////////////////////////////////////////
// todo:
// - switch initialisation cases
// -- RA initiated by beam failure recovery operation (subclause 5.17 TS 38.321)
// --- SSB selection, set prach_resources->ra_PreambleIndex
// -- RA initiated by PDCCH: ra_preamble_index provided by PDCCH && ra_PreambleIndex != 0b000000
// --- set PREAMBLE_INDEX to ra_preamble_index
// --- select the SSB signalled by PDCCH
// -- RA initiated for SI request:
// --- SSB selection, set prach_resources->ra_PreambleIndex
// if (rach_ConfigDedicated) { // This is for network controlled Mobility
// // operation for contention-free RA resources when:
// // - available SSB with SS-RSRP above rsrp-ThresholdSSB: SSB selection
// // - availalbe CSI-RS with CSI-RSRP above rsrp-ThresholdCSI-RS: CSI-RS selection
// prach_resources->ra_PreambleIndex = rach_ConfigDedicated->ra_PreambleIndex;
// return;
// }
//////////* Contention-based RA preamble selection *//////////
// todo:
// - selection of SSB with SS-RSRP above rsrp-ThresholdSSB else select any SSB
// - todo determine next available PRACH occasion
// rsrp_ThresholdSSB = *nr_rach_ConfigCommon->rsrp_ThresholdSSB;
AssertFatal
(
mac
->
nr_rach_ConfigCommon
!=
NULL
,
"[UE %d] FATAL nr_rach_ConfigCommon is NULL !!!
\n
"
,
mod_id
);
nr_rach_ConfigCommon
=
mac
->
nr_rach_ConfigCommon
;
Msg3_size
=
mac
->
RA_Msg3_size
;
numberOfRA_Preambles
=
*
nr_rach_ConfigCommon
->
totalNumberOfRA_Preambles
;
if
(
!
nr_rach_ConfigCommon
->
groupBconfigured
)
{
noGroupB
=
1
;
}
else
{
// RA preambles group B is configured
// - Defining the number of RA preambles in RA Preamble Group A for each SSB */
sizeOfRA_PreamblesGroupA
=
nr_rach_ConfigCommon
->
groupBconfigured
->
numberOfRA_PreamblesGroupA
;
switch
(
nr_rach_ConfigCommon
->
groupBconfigured
->
ra_Msg3SizeGroupA
){
/* - Threshold to determine the groups of RA preambles */
case
0
:
messageSizeGroupA
=
56
;
break
;
case
1
:
messageSizeGroupA
=
144
;
break
;
case
2
:
messageSizeGroupA
=
208
;
break
;
case
3
:
messageSizeGroupA
=
256
;
break
;
case
4
:
messageSizeGroupA
=
282
;
break
;
case
5
:
messageSizeGroupA
=
480
;
break
;
case
6
:
messageSizeGroupA
=
640
;
break
;
case
7
:
messageSizeGroupA
=
800
;
break
;
case
8
:
messageSizeGroupA
=
1000
;
break
;
case
9
:
messageSizeGroupA
=
72
;
break
;
default:
AssertFatal
(
1
==
0
,
"Unknown ra_Msg3SizeGroupA %lu
\n
"
,
nr_rach_ConfigCommon
->
groupBconfigured
->
ra_Msg3SizeGroupA
);
/* todo cases 10 -15*/
}
/* Power offset for preamble selection in dB */
messagePowerOffsetGroupB
=
-
9999
;
switch
(
nr_rach_ConfigCommon
->
groupBconfigured
->
messagePowerOffsetGroupB
){
case
0
:
messagePowerOffsetGroupB
=
-
9999
;
break
;
case
1
:
messagePowerOffsetGroupB
=
0
;
break
;
case
2
:
messagePowerOffsetGroupB
=
5
;
break
;
case
3
:
messagePowerOffsetGroupB
=
8
;
break
;
case
4
:
messagePowerOffsetGroupB
=
10
;
break
;
case
5
:
messagePowerOffsetGroupB
=
12
;
break
;
case
6
:
messagePowerOffsetGroupB
=
15
;
break
;
case
7
:
messagePowerOffsetGroupB
=
18
;
break
;
default:
AssertFatal
(
1
==
0
,
"Unknown messagePowerOffsetGroupB %lu
\n
"
,
nr_rach_ConfigCommon
->
groupBconfigured
->
messagePowerOffsetGroupB
);
}
// todo Msg3-DeltaPreamble should be provided from higher layers, otherwise is 0
mac
->
deltaPreamble_Msg3
=
0
;
deltaPreamble_Msg3
=
mac
->
deltaPreamble_Msg3
;
}
PLThreshold
=
prach_resources
->
RA_PCMAX
-
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
preambleReceivedTargetPower
-
deltaPreamble_Msg3
-
messagePowerOffsetGroupB
;
/* Msg3 has not been transmitted yet */
if
(
first_Msg3
==
1
)
{
if
(
noGroupB
==
1
)
{
// use Group A preamble
prach_resources
->
ra_PreambleIndex
=
(
taus
())
%
numberOfRA_Preambles
;
mac
->
RA_usedGroupA
=
1
;
}
else
if
((
Msg3_size
<
messageSizeGroupA
)
&&
(
get_nr_PL
(
mod_id
,
CC_id
,
gNB_id
)
>
PLThreshold
))
{
// Group B is configured and RA preamble Group A is used
// - todo add condition on CCCH_sdu_size for initiation by CCCH
prach_resources
->
ra_PreambleIndex
=
(
taus
())
%
sizeOfRA_PreamblesGroupA
;
mac
->
RA_usedGroupA
=
1
;
}
else
{
// Group B preamble is configured and used
// the first sizeOfRA_PreamblesGroupA RA preambles belong to RA Preambles Group A
// the remaining belong to RA Preambles Group B
prach_resources
->
ra_PreambleIndex
=
sizeOfRA_PreamblesGroupA
+
(
taus
())
%
(
numberOfRA_Preambles
-
sizeOfRA_PreamblesGroupA
);
mac
->
RA_usedGroupA
=
0
;
}
}
else
{
// Msg3 is being retransmitted
if
(
mac
->
RA_usedGroupA
==
1
&&
noGroupB
==
1
)
{
prach_resources
->
ra_PreambleIndex
=
(
taus
())
%
numberOfRA_Preambles
;
}
else
if
(
mac
->
RA_usedGroupA
==
1
&&
noGroupB
==
0
){
prach_resources
->
ra_PreambleIndex
=
(
taus
())
%
sizeOfRA_PreamblesGroupA
;
}
else
{
prach_resources
->
ra_PreambleIndex
=
sizeOfRA_PreamblesGroupA
+
(
taus
())
%
(
numberOfRA_Preambles
-
sizeOfRA_PreamblesGroupA
);
}
}
// todo determine next available PRACH occasion
// - if RA initiated for SI request and ra_AssociationPeriodIndex and si-RequestPeriod are configured
// - else if SSB is selected above
// - else if CSI-RS is selected above
/////////////////////////////////////////////////////////////////////////////
//////////* Random Access Preamble Transmission (5.1.3 TS 38.321) *//////////
/////////////////////////////////////////////////////////////////////////////
// todo:
// - condition on notification of suspending power ramping counter from lower layer (5.1.3 TS 38.321)
// - check if SSB or CSI-RS have not changed since the selection in the last RA Preamble tranmission
// - Extend RA_rnti computation (e.g. f_id selection, ul_carrier_id are hardcoded)
if
(
mac
->
RA_PREAMBLE_TRANSMISSION_COUNTER
>
1
)
mac
->
RA_PREAMBLE_TRANSMISSION_COUNTER
++
;
prach_resources
->
ra_PREAMBLE_RECEIVED_TARGET_POWER
=
nr_get_Po_NOMINAL_PUSCH
(
prach_resources
,
mod_id
,
CC_id
);
// RA-RNTI computation (associated to PRACH occasion in which the RA Preamble is transmitted)
// 1) this does not apply to contention-free RA Preamble for beam failure recovery request
// 2) getting star_symb, SFN_nbr from table 6.3.3.2-3 (TDD and FR1 scenario)
switch
(
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
msg1_FDM
){
// todo this is not used
case
0
:
msg1_FDM
=
1
;
break
;
case
1
:
msg1_FDM
=
2
;
break
;
case
2
:
msg1_FDM
=
4
;
break
;
case
3
:
msg1_FDM
=
8
;
break
;
default:
AssertFatal
(
1
==
0
,
"Unknown msg1_FDM %lu
\n
"
,
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
msg1_FDM
);
}
prach_ConfigIndex
=
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
prach_ConfigurationIndex
;
// ra_RNTI computation
// - todo: this is for TDD FR1 only
// - ul_carrier_id: UL carrier used for RA preamble transmission, hardcoded for NUL carrier
// - f_id: index of the PRACH occasion in the frequency domain
// - s_id is starting symbol of the PRACH occasion [0...14]
// - t_id is the first slot of the PRACH occasion in a system frame [0...80]
ul_carrier_id
=
0
;
// NUL
f_id
=
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
msg1_FrequencyStart
;
SFN_nbr
=
table_6_3_3_2_3_prachConfig_Index
[
prach_ConfigIndex
][
4
];
s_id
=
table_6_3_3_2_3_prachConfig_Index
[
prach_ConfigIndex
][
5
];
// Pick the first slot of the PRACH occasion in a system frame
for
(
i
=
0
;
i
<
10
;
i
++
){
if
(((
SFN_nbr
&
(
1
<<
i
))
>>
i
)
==
1
){
t_id
=
2
*
i
;
break
;
}
}
prach_resources
->
ra_RNTI
=
1
+
s_id
+
14
*
t_id
+
1120
*
f_id
+
8960
*
ul_carrier_id
;
mac
->
ra_rnti
=
prach_resources
->
ra_RNTI
;
LOG_D
(
MAC
,
"Computed ra_RNTI is %d"
,
prach_resources
->
ra_RNTI
);
}
// TbD: RA_attempt_number not used
void
nr_Msg1_transmitted
(
module_id_t
mod_id
,
uint8_t
CC_id
,
frame_t
frameP
,
uint8_t
gNB_id
){
AssertFatal
(
CC_id
==
0
,
"Transmission on secondary CCs is not supported yet
\n
"
);
NR_UE_MAC_INST_t
*
mac
=
get_mac_inst
(
mod_id
);
mac
->
ra_state
=
WAIT_RAR
;
// Start contention resolution timer
mac
->
RA_attempt_number
++
;
}
void
nr_Msg3_transmitted
(
module_id_t
mod_id
,
uint8_t
CC_id
,
frame_t
frameP
,
uint8_t
gNB_id
){
AssertFatal
(
CC_id
==
0
,
"Transmission on secondary CCs is not supported yet
\n
"
);
LOG_D
(
MAC
,
"[UE %d][RAPROC] Frame %d : Msg3_tx: Starting contention resolution timer
\n
"
,
mod_id
,
frameP
);
NR_UE_MAC_INST_t
*
mac
=
get_mac_inst
(
mod_id
);
// start contention resolution timer
mac
->
RA_contention_resolution_cnt
=
0
;
mac
->
RA_contention_resolution_timer_active
=
1
;
}
/////////////////////////////////////////////////////////////////////////
///////* Random Access Preamble Initialization (5.1.1 TS 38.321) *///////
/////////////////////////////////////////////////////////////////////////
/// Handling inizialization by PDCCH order, MAC entity or RRC (TS 38.300)
/// Only one RA procedure is ongoing at any point in time in a MAC entity
/// the RA procedure on a SCell shall only be initiated by PDCCH order
// WIP
// todo TS 38.321:
// - check if carrier to use is explicitly signalled then do (1) RA CARRIER SELECTION (SUL, NUL) (2) set PCMAX
// - BWP operation (subclause 5.15 TS 38.321)
// - handle initialization by beam failure recovery
// - handle initialization by handover
// - handle transmission on DCCH using PRACH (during handover, or sending SR for example)
// - take into account MAC CEs in size_sdu (currently hardcoded size to 1 MAC subPDU and 1 padding subheader)
// - fix rrc data req logic
// - retrieve TBS
// - add mac_rrc_nr_data_req_ue, etc ...
// - add the backoff condition here if we have it from a previous RA reponse which failed (i.e. backoff indicator)
openair1/SIMULATION/NR_PHY/nr_dummy_functions_prach.c
0 → 100644
View file @
4c30e6d3
int
oai_nfapi_hi_dci0_req
(
nfapi_hi_dci0_request_t
*
hi_dci0_req
)
{
return
(
0
);
}
int
oai_nfapi_tx_req
(
nfapi_tx_request_t
*
tx_req
)
{
return
(
0
);
}
int
oai_nfapi_dl_config_req
(
nfapi_dl_config_request_t
*
dl_config_req
)
{
return
(
0
);
}
int
oai_nfapi_ul_config_req
(
nfapi_ul_config_request_t
*
ul_config_req
)
{
return
(
0
);
}
//int oai_nfapi_nr_dl_config_req(nfapi_nr_dl_config_request_t *dl_config_req) { return(0); }
int32_t
get_uldl_offset
(
int
nr_bandP
)
{
return
(
0
);
}
NR_IF_Module_t
*
NR_IF_Module_init
(
int
Mod_id
)
{
return
(
NULL
);}
int
dummy_nr_ue_dl_indication
(
nr_downlink_indication_t
*
dl_info
)
{
return
(
0
);
}
int
dummy_nr_ue_ul_indication
(
nr_uplink_indication_t
*
ul_info
)
{
return
(
0
);
}
/*
* 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 ra_procedures.c
* \brief Routines for UE MAC-layer Random Access procedures (TS 38.321, Release 15)
* \author R. Knopp, Navid Nikaein, Guido Casati
* \date 2019
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr navid.nikaein@eurecom.fr, guido.casati@iis.fraunhofer.de
* \note
* \warning
*/
/*
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "PHY_INTERFACE/phy_interface_extern.h"
#include "SCHED_UE/sched_UE.h"
#include "COMMON/mac_rrc_primitives.h"
#include "RRC/LTE/rrc_extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "common/utils/LOG/log.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "PHY/LTE_ESTIMATION/lte_estimation.h"*/
/* Tools */
#include "SIMULATION/TOOLS/sim.h" // for taus
/* RRC */
#include "NR_RACH-ConfigCommon.h"
/* PHY */
#include "PHY/NR_TRANSPORT/nr_transport_common_proto.h"
#include "PHY/defs_common.h"
#include "PHY/defs_nr_common.h"
#include "PHY/NR_UE_ESTIMATION/nr_estimation.h"
/* MAC */
#include "LAYER2/NR_MAC_COMMON/nr_mac_extern.h"
#include "NR_MAC_COMMON/nr_mac.h"
#include "LAYER2/NR_MAC_UE/mac_proto.h"
#include "LAYER2/MAC/mac.h"
extern
int64_t
table_6_3_3_2_2_prachConfig_Index
[
256
][
9
];
extern
int64_t
table_6_3_3_2_3_prachConfig_Index
[
256
][
9
];
//extern uint8_t nfapi_mode;
// WIP
// This routine implements Section 5.1.2 (UE Random Access Resource Selection)
// and Section 5.1.3 (Random Access Preamble Transmission) from 3GPP TS 38.321
void
nr_get_prach_resources
(
module_id_t
mod_id
,
int
CC_id
,
uint8_t
gNB_id
,
uint8_t
t_id
,
uint8_t
first_Msg3
,
NR_PRACH_RESOURCES_t
*
prach_resources
,
NR_RACH_ConfigDedicated_t
*
rach_ConfigDedicated
){
NR_UE_MAC_INST_t
*
mac
=
get_mac_inst
(
mod_id
);
NR_RACH_ConfigCommon_t
*
nr_rach_ConfigCommon
;
// NR_BeamFailureRecoveryConfig_t *beam_failure_recovery_config = &mac->RA_BeamFailureRecoveryConfig; // todo
int
messagePowerOffsetGroupB
,
messageSizeGroupA
,
PLThreshold
,
sizeOfRA_PreamblesGroupA
,
numberOfRA_Preambles
,
i
,
deltaPreamble_Msg3
;
uint8_t
noGroupB
=
0
,
s_id
,
f_id
,
ul_carrier_id
,
msg1_FDM
,
prach_ConfigIndex
,
SFN_nbr
,
Msg3_size
;
// NR_RSRP_Range_t rsrp_ThresholdSSB; // todo
///////////////////////////////////////////////////////////
//////////* UE Random Access Resource Selection *//////////
///////////////////////////////////////////////////////////
// todo:
// - switch initialisation cases
// -- RA initiated by beam failure recovery operation (subclause 5.17 TS 38.321)
// --- SSB selection, set prach_resources->ra_PreambleIndex
// -- RA initiated by PDCCH: ra_preamble_index provided by PDCCH && ra_PreambleIndex != 0b000000
// --- set PREAMBLE_INDEX to ra_preamble_index
// --- select the SSB signalled by PDCCH
// -- RA initiated for SI request:
// --- SSB selection, set prach_resources->ra_PreambleIndex
// if (rach_ConfigDedicated) { // This is for network controlled Mobility
// // operation for contention-free RA resources when:
// // - available SSB with SS-RSRP above rsrp-ThresholdSSB: SSB selection
// // - availalbe CSI-RS with CSI-RSRP above rsrp-ThresholdCSI-RS: CSI-RS selection
// prach_resources->ra_PreambleIndex = rach_ConfigDedicated->ra_PreambleIndex;
// return;
// }
//////////* Contention-based RA preamble selection *//////////
// todo:
// - selection of SSB with SS-RSRP above rsrp-ThresholdSSB else select any SSB
// - todo determine next available PRACH occasion
// rsrp_ThresholdSSB = *nr_rach_ConfigCommon->rsrp_ThresholdSSB;
AssertFatal
(
mac
->
nr_rach_ConfigCommon
!=
NULL
,
"[UE %d] FATAL nr_rach_ConfigCommon is NULL !!!
\n
"
,
mod_id
);
nr_rach_ConfigCommon
=
mac
->
nr_rach_ConfigCommon
;
Msg3_size
=
mac
->
RA_Msg3_size
;
numberOfRA_Preambles
=
*
nr_rach_ConfigCommon
->
totalNumberOfRA_Preambles
;
if
(
!
nr_rach_ConfigCommon
->
groupBconfigured
)
{
noGroupB
=
1
;
}
else
{
// RA preambles group B is configured
// - Defining the number of RA preambles in RA Preamble Group A for each SSB */
sizeOfRA_PreamblesGroupA
=
nr_rach_ConfigCommon
->
groupBconfigured
->
numberOfRA_PreamblesGroupA
;
switch
(
nr_rach_ConfigCommon
->
groupBconfigured
->
ra_Msg3SizeGroupA
){
/* - Threshold to determine the groups of RA preambles */
case
0
:
messageSizeGroupA
=
56
;
break
;
case
1
:
messageSizeGroupA
=
144
;
break
;
case
2
:
messageSizeGroupA
=
208
;
break
;
case
3
:
messageSizeGroupA
=
256
;
break
;
case
4
:
messageSizeGroupA
=
282
;
break
;
case
5
:
messageSizeGroupA
=
480
;
break
;
case
6
:
messageSizeGroupA
=
640
;
break
;
case
7
:
messageSizeGroupA
=
800
;
break
;
case
8
:
messageSizeGroupA
=
1000
;
break
;
case
9
:
messageSizeGroupA
=
72
;
break
;
default:
AssertFatal
(
1
==
0
,
"Unknown ra_Msg3SizeGroupA %lu
\n
"
,
nr_rach_ConfigCommon
->
groupBconfigured
->
ra_Msg3SizeGroupA
);
/* todo cases 10 -15*/
}
/* Power offset for preamble selection in dB */
messagePowerOffsetGroupB
=
-
9999
;
switch
(
nr_rach_ConfigCommon
->
groupBconfigured
->
messagePowerOffsetGroupB
){
case
0
:
messagePowerOffsetGroupB
=
-
9999
;
break
;
case
1
:
messagePowerOffsetGroupB
=
0
;
break
;
case
2
:
messagePowerOffsetGroupB
=
5
;
break
;
case
3
:
messagePowerOffsetGroupB
=
8
;
break
;
case
4
:
messagePowerOffsetGroupB
=
10
;
break
;
case
5
:
messagePowerOffsetGroupB
=
12
;
break
;
case
6
:
messagePowerOffsetGroupB
=
15
;
break
;
case
7
:
messagePowerOffsetGroupB
=
18
;
break
;
default:
AssertFatal
(
1
==
0
,
"Unknown messagePowerOffsetGroupB %lu
\n
"
,
nr_rach_ConfigCommon
->
groupBconfigured
->
messagePowerOffsetGroupB
);
}
// todo Msg3-DeltaPreamble should be provided from higher layers, otherwise is 0
mac
->
deltaPreamble_Msg3
=
0
;
deltaPreamble_Msg3
=
mac
->
deltaPreamble_Msg3
;
}
PLThreshold
=
prach_resources
->
RA_PCMAX
-
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
preambleReceivedTargetPower
-
deltaPreamble_Msg3
-
messagePowerOffsetGroupB
;
/* Msg3 has not been transmitted yet */
if
(
first_Msg3
==
1
)
{
if
(
noGroupB
==
1
)
{
// use Group A preamble
prach_resources
->
ra_PreambleIndex
=
(
taus
())
%
numberOfRA_Preambles
;
mac
->
RA_usedGroupA
=
1
;
}
else
if
((
Msg3_size
<
messageSizeGroupA
)
&&
(
get_nr_PL
(
mod_id
,
CC_id
,
gNB_id
)
>
PLThreshold
))
{
// Group B is configured and RA preamble Group A is used
// - todo add condition on CCCH_sdu_size for initiation by CCCH
prach_resources
->
ra_PreambleIndex
=
(
taus
())
%
sizeOfRA_PreamblesGroupA
;
mac
->
RA_usedGroupA
=
1
;
}
else
{
// Group B preamble is configured and used
// the first sizeOfRA_PreamblesGroupA RA preambles belong to RA Preambles Group A
// the remaining belong to RA Preambles Group B
prach_resources
->
ra_PreambleIndex
=
sizeOfRA_PreamblesGroupA
+
(
taus
())
%
(
numberOfRA_Preambles
-
sizeOfRA_PreamblesGroupA
);
mac
->
RA_usedGroupA
=
0
;
}
}
else
{
// Msg3 is being retransmitted
if
(
mac
->
RA_usedGroupA
==
1
&&
noGroupB
==
1
)
{
prach_resources
->
ra_PreambleIndex
=
(
taus
())
%
numberOfRA_Preambles
;
}
else
if
(
mac
->
RA_usedGroupA
==
1
&&
noGroupB
==
0
){
prach_resources
->
ra_PreambleIndex
=
(
taus
())
%
sizeOfRA_PreamblesGroupA
;
}
else
{
prach_resources
->
ra_PreambleIndex
=
sizeOfRA_PreamblesGroupA
+
(
taus
())
%
(
numberOfRA_Preambles
-
sizeOfRA_PreamblesGroupA
);
}
}
// todo determine next available PRACH occasion
// - if RA initiated for SI request and ra_AssociationPeriodIndex and si-RequestPeriod are configured
// - else if SSB is selected above
// - else if CSI-RS is selected above
/////////////////////////////////////////////////////////////////////////////
//////////* Random Access Preamble Transmission (5.1.3 TS 38.321) *//////////
/////////////////////////////////////////////////////////////////////////////
// todo:
// - condition on notification of suspending power ramping counter from lower layer (5.1.3 TS 38.321)
// - check if SSB or CSI-RS have not changed since the selection in the last RA Preamble tranmission
// - Extend RA_rnti computation (e.g. f_id selection, ul_carrier_id are hardcoded)
if
(
mac
->
RA_PREAMBLE_TRANSMISSION_COUNTER
>
1
)
mac
->
RA_PREAMBLE_TRANSMISSION_COUNTER
++
;
prach_resources
->
ra_PREAMBLE_RECEIVED_TARGET_POWER
=
nr_get_Po_NOMINAL_PUSCH
(
prach_resources
,
mod_id
,
CC_id
);
// RA-RNTI computation (associated to PRACH occasion in which the RA Preamble is transmitted)
// 1) this does not apply to contention-free RA Preamble for beam failure recovery request
// 2) getting star_symb, SFN_nbr from table 6.3.3.2-3 (TDD and FR1 scenario)
switch
(
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
msg1_FDM
){
// todo this is not used
case
0
:
msg1_FDM
=
1
;
break
;
case
1
:
msg1_FDM
=
2
;
break
;
case
2
:
msg1_FDM
=
4
;
break
;
case
3
:
msg1_FDM
=
8
;
break
;
default:
AssertFatal
(
1
==
0
,
"Unknown msg1_FDM %lu
\n
"
,
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
msg1_FDM
);
}
prach_ConfigIndex
=
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
prach_ConfigurationIndex
;
// ra_RNTI computation
// - todo: this is for TDD FR1 only
// - ul_carrier_id: UL carrier used for RA preamble transmission, hardcoded for NUL carrier
// - f_id: index of the PRACH occasion in the frequency domain
// - s_id is starting symbol of the PRACH occasion [0...14]
// - t_id is the first slot of the PRACH occasion in a system frame [0...80]
ul_carrier_id
=
0
;
// NUL
f_id
=
nr_rach_ConfigCommon
->
rach_ConfigGeneric
.
msg1_FrequencyStart
;
SFN_nbr
=
table_6_3_3_2_3_prachConfig_Index
[
prach_ConfigIndex
][
4
];
s_id
=
table_6_3_3_2_3_prachConfig_Index
[
prach_ConfigIndex
][
5
];
// Pick the first slot of the PRACH occasion in a system frame
for
(
i
=
0
;
i
<
10
;
i
++
){
if
(((
SFN_nbr
&
(
1
<<
i
))
>>
i
)
==
1
){
t_id
=
2
*
i
;
break
;
}
}
prach_resources
->
ra_RNTI
=
1
+
s_id
+
14
*
t_id
+
1120
*
f_id
+
8960
*
ul_carrier_id
;
mac
->
ra_rnti
=
prach_resources
->
ra_RNTI
;
LOG_D
(
MAC
,
"Computed ra_RNTI is %d"
,
prach_resources
->
ra_RNTI
);
}
// TbD: RA_attempt_number not used
void
nr_Msg1_transmitted
(
module_id_t
mod_id
,
uint8_t
CC_id
,
frame_t
frameP
,
uint8_t
gNB_id
){
AssertFatal
(
CC_id
==
0
,
"Transmission on secondary CCs is not supported yet
\n
"
);
NR_UE_MAC_INST_t
*
mac
=
get_mac_inst
(
mod_id
);
mac
->
ra_state
=
WAIT_RAR
;
// Start contention resolution timer
mac
->
RA_attempt_number
++
;
}
void
nr_Msg3_transmitted
(
module_id_t
mod_id
,
uint8_t
CC_id
,
frame_t
frameP
,
uint8_t
gNB_id
){
AssertFatal
(
CC_id
==
0
,
"Transmission on secondary CCs is not supported yet
\n
"
);
LOG_D
(
MAC
,
"[UE %d][RAPROC] Frame %d : Msg3_tx: Starting contention resolution timer
\n
"
,
mod_id
,
frameP
);
NR_UE_MAC_INST_t
*
mac
=
get_mac_inst
(
mod_id
);
// start contention resolution timer
mac
->
RA_contention_resolution_cnt
=
0
;
mac
->
RA_contention_resolution_timer_active
=
1
;
}
/////////////////////////////////////////////////////////////////////////
///////* Random Access Preamble Initialization (5.1.1 TS 38.321) *///////
/////////////////////////////////////////////////////////////////////////
/// Handling inizialization by PDCCH order, MAC entity or RRC (TS 38.300)
/// Only one RA procedure is ongoing at any point in time in a MAC entity
/// the RA procedure on a SCell shall only be initiated by PDCCH order
// WIP
// todo TS 38.321:
// - check if carrier to use is explicitly signalled then do (1) RA CARRIER SELECTION (SUL, NUL) (2) set PCMAX
// - BWP operation (subclause 5.15 TS 38.321)
// - handle initialization by beam failure recovery
// - handle initialization by handover
// - handle transmission on DCCH using PRACH (during handover, or sending SR for example)
// - take into account MAC CEs in size_sdu (currently hardcoded size to 1 MAC subPDU and 1 padding subheader)
// - fix rrc data req logic
// - retrieve TBS
// - add mac_rrc_nr_data_req_ue, etc ...
// - add the backoff condition here if we have it from a previous RA reponse which failed (i.e. backoff indicator)
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