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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
*/
#include "PHY/phy_extern.h"
#include "PHY/defs_gNB.h"
#include "SCHED/sched_eNB.h"
#include "SCHED/sched_common_extern.h"
#include "UTIL/LOG/log.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "T.h"
#include "assertions.h"
#include "msc.h"
#include <time.h>
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif
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/*
int return_ssb_type(nfapi_config_request_t *cfg)
{
int mu = cfg->subframe_config.numerology_index_mu.value;
nr_numerology_index_e ssb_type;
switch(mu) {
case NR_MU_0:
ssb_type = nr_ssb_type_A;
break;
case NR_MU_1:
ssb_type = nr_ssb_type_B;
break;
case NR_MU_3:
ssb_type = nr_ssb_type_D;
break;
case NR_MU_4:
ssb_type = nr_ssb_type_E;
break;
default:
AssertFatal(0==1, "Invalid numerology index %d for the synchronization block\n", mu);
}
LOG_D(PHY, "SSB type %d\n", ssb_type);
return ssb_type;
}*/
// First SSB starting symbol candidate is used and type B is chosen for 30kHz SCS
int nr_get_ssb_start_symbol(nfapi_nr_config_request_t *cfg, NR_DL_FRAME_PARMS *fp)
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{
int mu = cfg->subframe_config.numerology_index_mu.value;
int symbol = 0;
switch(mu) {
case NR_MU_0:
symbol = 2;
break;
case NR_MU_1: // case B
symbol = 4;
break;
case NR_MU_3:
symbol = 4;
break;
case NR_MU_4:
symbol = 8;
break;
default:
AssertFatal(0==1, "Invalid numerology index %d for the synchronization block\n", mu);
}
if (cfg->sch_config.half_frame_index.value)
symbol += (5 * fp->symbols_per_slot * fp->slots_per_subframe);
return symbol;
}
void nr_set_ssb_first_subcarrier(nfapi_nr_config_request_t *cfg, NR_DL_FRAME_PARMS *fp)
{
int start_rb = cfg->sch_config.n_ssb_crb.value / pow(2,cfg->subframe_config.numerology_index_mu.value);
fp->ssb_start_subcarrier = 12 * start_rb + cfg->sch_config.ssb_subcarrier_offset.value;
LOG_D(PHY, "SSB first subcarrier %d\n", fp->ssb_start_subcarrier);
}
void nr_common_signal_procedures (PHY_VARS_gNB *gNB,int frame, int subframe) {
nfapi_nr_config_request_t *cfg = &gNB->gNB_config;
int **txdataF = gNB->common_vars.txdataF;
uint8_t *pbch_pdu=&gNB->pbch_pdu[0];
int ss_subframe = (cfg->sch_config.half_frame_index.value)? 5 : 0;
int sfn = 10*frame + subframe;
int frame_mod8 = frame&7;
uint8_t Lmax, nushift, ssb_index=0, n_hf=0;
LOG_D(PHY,"common_signal_procedures: frame %d, subframe %d\n",frame,subframe);
int ssb_start_symbol = nr_get_ssb_start_symbol(cfg, fp);
nushift = (Lmax < 8)? ssb_index&3 : ssb_index&7;
// Current implementation is based on SSB in first half frame, first candidate
LOG_I(PHY,"SS TX: frame %d, subframe %d, start_symbol %d\n",frame,subframe, ssb_start_symbol);
nr_generate_pss(gNB->d_pss, txdataF, AMP, ssb_start_symbol, cfg, fp);
nr_generate_sss(gNB->d_sss, txdataF, AMP_OVER_2, ssb_start_symbol, cfg, fp);
/*if ((frame_mod8) == 0){
if (gNB->pbch_configured != 1)return;
gNB->pbch_configured = 0;
}*/
nr_generate_pbch_dmrs(gNB->nr_gold_pbch_dmrs[n_hf][ssb_index],txdataF, AMP_OVER_2, ssb_start_symbol, nushift, cfg, fp);
nr_generate_pbch(&gNB->pbch, pbch_pdu, txdataF, AMP_OVER_2, ssb_start_symbol, nushift, sfn, n_hf, frame_mod8, cfg, fp);
}
void phy_procedures_gNB_TX(PHY_VARS_gNB *gNB,
gNB_rxtx_proc_t *proc,
int do_meas)
{
int aa;
int frame=proc->frame_tx;
int subframe=proc->subframe_tx;
NR_DL_FRAME_PARMS *fp=&gNB->frame_parms;
nfapi_nr_config_request_t *cfg = &gNB->gNB_config;
int offset = gNB->CC_id;
if ((cfg->subframe_config.duplex_mode.value == TDD) && (nr_subframe_select(cfg,subframe)==SF_UL)) return;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX+offset,1);
if (do_meas==1) start_meas(&gNB->phy_proc_tx);
// clear the transmit data array for the current subframe
for (aa=0; aa<cfg->rf_config.tx_antenna_ports.value; aa++) {
memset(&gNB->common_vars.txdataF[aa][subframe*fp->samples_per_subframe_wCP],
0,fp->samples_per_subframe_wCP*sizeof(int32_t));
}
if (nfapi_mode == 0 || nfapi_mode == 1) {
nr_common_signal_procedures(gNB,frame, subframe);
//if (frame == 9)
//write_output("txdataF.m","txdataF",gNB->common_vars.txdataF[aa],fp->samples_per_frame_wCP, 1, 1);