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openairinterface5g/openair1/SCHED_NR/nr_ru_procedures.c
T
laurent cfeae9560e merge develop
2022-08-26 18:02:50 +02:00

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/*
* 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 ru_procedures.c
* \brief Implementation of RU procedures
* \author R. Knopp, F. Kaltenberger, N. Nikaein, X. Foukas
* \date 2011
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr,navid.nikaein@eurecom.fr, x.foukas@sms.ed.ac.uk
* \note
* \warning
*/
#include "PHY/defs_gNB.h"
#include "sched_nr.h"
#include "PHY/MODULATION/modulation_common.h"
#include "PHY/MODULATION/nr_modulation.h"
#include "PHY/LTE_TRANSPORT/if4_tools.h"
#include "common/utils/LOG/log.h"
#include "common/utils/system.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "T.h"
#include "assertions.h"
#include <time.h>
// RU OFDM Modulator gNodeB
extern int oai_exit;
// OFDM modulation core routine, generates a first_symbol to first_symbol+num_symbols on a particular slot and TX antenna port
void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
unsigned int slot_offset,slot_offsetF;
int slot = tti_tx;
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM+(first_symbol!=0?1:0) , 1 );
if (aa==0 && first_symbol == 0) start_meas(&ru->ofdm_mod_stats);
slot_offset = fp->get_samples_slot_timestamp(slot,fp,0);
slot_offsetF = first_symbol*fp->ofdm_symbol_size;
int abs_first_symbol = slot*fp->symbols_per_slot;
for (uint16_t idx_sym=abs_first_symbol; idx_sym<abs_first_symbol+first_symbol; idx_sym++)
slot_offset += (idx_sym%(0x7<<fp->numerology_index)) ? fp->nb_prefix_samples : fp->nb_prefix_samples0;
slot_offset += fp->ofdm_symbol_size*first_symbol;
LOG_D(PHY,"SFN/SF:RU:TX:%d/%d aa %d Generating slot %d (first_symbol %d num_symbols %d) slot_offset %d, slot_offsetF %d\n",ru->proc.frame_tx, ru->proc.tti_tx,aa,slot,first_symbol,num_symbols,slot_offset,slot_offsetF);
if (fp->Ncp == 1) {
PHY_ofdm_mod(&ru->common.txdataF_BF[aa][slot_offsetF],
(int*)&ru->common.txdata[aa][slot_offset],
fp->ofdm_symbol_size,
num_symbols,
fp->nb_prefix_samples,
CYCLIC_PREFIX);
} else {
if (fp->numerology_index != 0) {
if (!(slot%(fp->slots_per_subframe/2))&&(first_symbol==0)) { // case where first symbol in slot has longer prefix
PHY_ofdm_mod(&ru->common.txdataF_BF[aa][slot_offsetF],
(int*)&ru->common.txdata[aa][slot_offset],
fp->ofdm_symbol_size,
1,
fp->nb_prefix_samples0,
CYCLIC_PREFIX);
PHY_ofdm_mod(&ru->common.txdataF_BF[aa][slot_offsetF+fp->ofdm_symbol_size],
(int*)&ru->common.txdata[aa][slot_offset+fp->nb_prefix_samples0+fp->ofdm_symbol_size],
fp->ofdm_symbol_size,
num_symbols-1,
fp->nb_prefix_samples,
CYCLIC_PREFIX);
}
else { // all symbols in slot have shorter prefix
PHY_ofdm_mod(&ru->common.txdataF_BF[aa][slot_offsetF],
(int*)&ru->common.txdata[aa][slot_offset],
fp->ofdm_symbol_size,
num_symbols,
fp->nb_prefix_samples,
CYCLIC_PREFIX);
}
} // numerology_index!=0
else { //numerology_index == 0
for (uint16_t idx_sym=abs_first_symbol; idx_sym<abs_first_symbol+num_symbols; idx_sym++) {
if (idx_sym%0x7) {
PHY_ofdm_mod(&ru->common.txdataF_BF[aa][slot_offsetF],
(int*)&ru->common.txdata[aa][slot_offset],
fp->ofdm_symbol_size,
1,
fp->nb_prefix_samples,
CYCLIC_PREFIX);
slot_offset += fp->nb_prefix_samples+fp->ofdm_symbol_size;
slot_offsetF += fp->ofdm_symbol_size;
}
else {
PHY_ofdm_mod(&ru->common.txdataF_BF[aa][slot_offsetF],
(int*)&ru->common.txdata[aa][slot_offset],
fp->ofdm_symbol_size,
1,
fp->nb_prefix_samples0,
CYCLIC_PREFIX);
slot_offset += fp->nb_prefix_samples0+fp->ofdm_symbol_size;
slot_offsetF += fp->ofdm_symbol_size;
}
} // for(idx_symbol..
} // numerology 0
}
if (aa==0 && first_symbol==0) stop_meas(&ru->ofdm_mod_stats);
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM+(first_symbol!=0?1:0), 0);
}
// RU FEP TX OFDM modulation, single-thread
void nr_feptx_ofdm(RU_t *ru,int frame_tx,int tti_tx) {
nfapi_nr_config_request_scf_t *cfg = &ru->gNB_list[0]->gNB_config;
NR_DL_FRAME_PARMS *fp=ru->nr_frame_parms;
int cyclic_prefix_type = NFAPI_CP_NORMAL;
unsigned int aa=0;
int slot_sizeF = (fp->ofdm_symbol_size)*
((cyclic_prefix_type == 1) ? 12 : 14);
int slot = tti_tx;
int *txdata = &ru->common.txdata[aa][fp->get_samples_slot_timestamp(slot,fp,0)];
if (nr_slot_select(cfg,frame_tx,slot) == NR_UPLINK_SLOT) return;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM , 1 );
// LOG_D(HW,"Frame %d: Generating slot %d\n",frame,next_slot);
nr_feptx0(ru,slot,0,NR_NUMBER_OF_SYMBOLS_PER_SLOT,aa);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM , 0 );
LOG_D(PHY,"feptx_ofdm (TXPATH): frame %d, slot %d: txp (time %p) %d dB, txp (freq) %d dB\n",
frame_tx,slot,txdata,dB_fixed(signal_energy((int32_t*)txdata,fp->get_samples_per_slot(
slot,fp))),dB_fixed(signal_energy_nodc(ru->common.txdataF_BF[aa],2*slot_sizeF)));
}
void nr_feptx_prec(RU_t *ru,int frame_tx,int tti_tx) {
int l,aa;
PHY_VARS_gNB **gNB_list = ru->gNB_list,*gNB;
NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
nfapi_nr_config_request_scf_t *cfg = &ru->gNB_list[0]->gNB_config;
int32_t ***bw;
int i=0;
int slot_tx = tti_tx;
int txdataF_offset = (tti_tx*fp->samples_per_slot_wCP);
start_meas(&ru->precoding_stats);
AssertFatal(ru->nb_log_antennas > 0,"ru->nb_log_antennas is 0!\n");
if (ru->num_gNB == 1){
gNB = gNB_list[0];
if (nr_slot_select(cfg,frame_tx,slot_tx) == NR_UPLINK_SLOT) return;
for(i=0; i<ru->nb_log_antennas; ++i) {
memcpy((void*)ru->common.txdataF[i],
(void*)&gNB->common_vars.txdataF[i][txdataF_offset],
fp->samples_per_slot_wCP*sizeof(int32_t));
if (ru->do_precoding == 1)
memcpy((void*)&ru->common.beam_id[i][slot_tx*fp->symbols_per_slot],
(void*)&gNB->common_vars.beam_id[i][slot_tx*fp->symbols_per_slot],
fp->symbols_per_slot*sizeof(uint8_t));
}
if (ru->nb_tx == 1 && ru->nb_log_antennas == 1) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC , 1);
memcpy((void*)ru->common.txdataF_BF[0],
(void*)ru->common.txdataF[0],
fp->samples_per_slot_wCP*sizeof(int32_t));
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC , 0);
}// if (ru->nb_tx == 1)
else {
bw = ru->beam_weights[0];
for (l=0;l<fp->symbols_per_slot;l++) {
for (aa=0;aa<ru->nb_tx;aa++) {
nr_beam_precoding(ru->common.txdataF,
ru->common.txdataF_BF,
fp,
bw,
tti_tx,
l,
aa,
ru->nb_log_antennas,
0);
}// for (aa=0;aa<ru->nb_tx;aa++)
}// for (l=0;l<fp->symbols_per_slot;l++)
}// if (ru->nb_tx == 1)
}// if (ru->num_gNB == 1)
stop_meas(&ru->precoding_stats);
}
void nr_fep_full(RU_t *ru, int slot) {
RU_proc_t *proc = &ru->proc;
int l, aa;
NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
// if ((fp->frame_type == TDD) &&
// (subframe_select(fp,proc->tti_rx) != NR_UPLINK_SLOT)) return;
LOG_D(PHY,"In fep_full for slot = %d\n", proc->tti_rx);
start_meas(&ru->ofdm_demod_stats);
if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 1 );
// remove_7_5_kHz(ru,proc->tti_rx<<1);
// remove_7_5_kHz(ru,1+(proc->tti_rx<<1));
int offset = (proc->tti_rx&3)*(fp->symbols_per_slot * fp->ofdm_symbol_size);
for (l = 0; l < fp->symbols_per_slot; l++) {
for (aa = 0; aa < fp->nb_antennas_rx; aa++) {
nr_slot_fep_ul(fp,
ru->common.rxdata[aa],
&ru->common.rxdataF[aa][offset],
l,
proc->tti_rx,
ru->N_TA_offset);
}
}
if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 0 );
stop_meas(&ru->ofdm_demod_stats);
}
// core routine for FEP TX, called from threads in RU TX thread-pool
void nr_feptx(void *arg) {
feptx_cmd_t *feptx = (feptx_cmd_t *)arg;
RU_t *ru = feptx->ru;
int slot = feptx->slot;
int aa = feptx->aid;
int startSymbol = feptx->startSymbol;
NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
int numSymbols = feptx->numSymbols;
int numSamples = feptx->numSymbols*fp->ofdm_symbol_size;
int txdataF_offset = (slot*fp->samples_per_slot_wCP) + startSymbol*fp->ofdm_symbol_size;
int txdataF_BF_offset = startSymbol*fp->ofdm_symbol_size;
////////////precoding////////////
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->aid , 1);
if (aa==0) start_meas(&ru->precoding_stats);
if (ru->do_precoding == 1) {
for(int i=0; i<ru->nb_log_antennas; ++i) {
memcpy((void*) &ru->common.beam_id[i][slot*fp->symbols_per_slot],
(void*) &ru->gNB_list[0]->common_vars.beam_id[i][slot*fp->symbols_per_slot],
(fp->symbols_per_slot)*sizeof(uint8_t));
}
}
if (ru->nb_tx == 1 && ru->nb_log_antennas == 1) {
memcpy((void*)&ru->common.txdataF_BF[0][txdataF_BF_offset],
(void*)&ru->gNB_list[0]->common_vars.txdataF[0][txdataF_offset],
numSamples*sizeof(int32_t));
}
else if (ru->do_precoding == 0) {
int gNB_tx = ru->gNB_list[0]->frame_parms.nb_antennas_tx;
memcpy((void*)&ru->common.txdataF_BF[aa][txdataF_BF_offset],
(void*)&ru->gNB_list[0]->common_vars.txdataF[aa%gNB_tx][txdataF_offset],
numSamples*sizeof(int32_t));
}
else {
AssertFatal(1==0,"This needs to be fixed, do not use beamforming.\n");
int32_t ***bw = ru->beam_weights[0];
for(int i=0; i<fp->symbols_per_slot; ++i){
nr_beam_precoding(ru->gNB_list[0]->common_vars.txdataF,
ru->common.txdataF_BF,
fp,
bw,
slot,
i,
aa,
ru->nb_log_antennas,
txdataF_offset);//here
}
}
if (aa==0) stop_meas(&ru->precoding_stats);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->aid , 0);
////////////FEPTX////////////
nr_feptx0(ru,slot,startSymbol,numSymbols,aa);
}
// RU FEP TX using thread-pool
void nr_feptx_tp(RU_t *ru, int frame_tx, int slot) {
nfapi_nr_config_request_scf_t *cfg = &ru->gNB_list[0]->gNB_config;
int nbfeptx=0;
if (nr_slot_select(cfg,frame_tx,slot) == NR_UPLINK_SLOT) return;
// for (int aa=0; aa<ru->nb_tx; aa++) memset(ru->common.txdataF[aa],0,ru->nr_frame_parms->samples_per_slot_wCP*sizeof(int32_t));
if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM, 1 );
start_meas(&ru->ofdm_total_stats);
for (int aid=0;aid<ru->nb_tx;aid++) {
notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(feptx_cmd_t), 2000 + aid,ru->respfeptx,nr_feptx);
feptx_cmd_t *feptx_cmd=(feptx_cmd_t*)NotifiedFifoData(req);
feptx_cmd->aid = aid;
feptx_cmd->ru = ru;
feptx_cmd->slot = slot;
feptx_cmd->startSymbol = 0;
feptx_cmd->numSymbols = (ru->half_slot_parallelization>0)?ru->nr_frame_parms->symbols_per_slot>>1:ru->nr_frame_parms->symbols_per_slot;
pushTpool(ru->threadPool,req);
nbfeptx++;
if (ru->half_slot_parallelization>0) {
notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(feptx_cmd_t), 2000 + aid + ru->nb_tx,ru->respfeptx,nr_feptx);
feptx_cmd_t *feptx_cmd=(feptx_cmd_t*)NotifiedFifoData(req);
feptx_cmd->aid = aid;
feptx_cmd->ru = ru;
feptx_cmd->slot = slot;
feptx_cmd->startSymbol = ru->nr_frame_parms->symbols_per_slot>>1;
feptx_cmd->numSymbols = ru->nr_frame_parms->symbols_per_slot>>1;
pushTpool(ru->threadPool,req);
nbfeptx++;
}
}
while (nbfeptx>0) {
notifiedFIFO_elt_t *req=pullTpool(ru->respfeptx, ru->threadPool);
delNotifiedFIFO_elt(req);
nbfeptx--;
}
stop_meas(&ru->ofdm_total_stats);
if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM, 0 );
}
// core RX FEP routine, called by threads in RU thread-pool
void nr_fep(void* arg) {
feprx_cmd_t *feprx_cmd = (feprx_cmd_t *)arg;
RU_t *ru = feprx_cmd->ru;
int aid = feprx_cmd->aid;
int tti_rx = feprx_cmd->slot;
int startSymbol = feprx_cmd->startSymbol;
int endSymbol = feprx_cmd->endSymbol;
NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
LOG_D(PHY,"In nr_fep for aid %d, slot = %d, startSymbol %d, endSymbol %d\n", aid, tti_rx,startSymbol,endSymbol);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+aid, 1);
int offset = (tti_rx&3) * fp->symbols_per_slot * fp->ofdm_symbol_size;
for (int l = startSymbol; l <= endSymbol; l++)
nr_slot_fep_ul(fp,
ru->common.rxdata[aid],
&ru->common.rxdataF[aid][offset],
l,
tti_rx,
ru->N_TA_offset);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+aid, 0);
}
// RU RX FEP using thread-pool
void nr_fep_tp(RU_t *ru, int slot) {
int nbfeprx=0;
if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 1 );
start_meas(&ru->ofdm_demod_stats);
for (int aid=0;aid<ru->nb_rx;aid++) {
notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(feprx_cmd_t), 1000 + aid,ru->respfeprx,nr_fep);
feprx_cmd_t *feprx_cmd=(feprx_cmd_t*)NotifiedFifoData(req);
feprx_cmd->aid = aid;
feprx_cmd->ru = ru;
feprx_cmd->slot = ru->proc.tti_rx;
feprx_cmd->startSymbol = 0;
feprx_cmd->endSymbol = (ru->half_slot_parallelization > 0)?(ru->nr_frame_parms->symbols_per_slot>>1)-1:(ru->nr_frame_parms->symbols_per_slot-1);
pushTpool(ru->threadPool,req);
nbfeprx++;
if (ru->half_slot_parallelization>0) {
notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(feprx_cmd_t), 1000 + aid + ru->nb_rx,ru->respfeprx,nr_fep);
feprx_cmd_t *feprx_cmd=(feprx_cmd_t*)NotifiedFifoData(req);
feprx_cmd->aid = aid;
feprx_cmd->ru = ru;
feprx_cmd->slot = ru->proc.tti_rx;
feprx_cmd->startSymbol = ru->nr_frame_parms->symbols_per_slot>>1;
feprx_cmd->endSymbol = ru->nr_frame_parms->symbols_per_slot-1;
pushTpool(ru->threadPool,req);
nbfeprx++;
}
}
while (nbfeprx>0) {
notifiedFIFO_elt_t *req=pullTpool(ru->respfeprx, ru->threadPool);
delNotifiedFIFO_elt(req);
nbfeprx--;
}
stop_meas(&ru->ofdm_demod_stats);
if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 0 );
}
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