From 1447d0fa40d5c27f3a832949cc337420e1632710 Mon Sep 17 00:00:00 2001
From: Guy De Souza <desouza@eurecom.fr>
Date: Tue, 10 Apr 2018 14:38:59 +0200
Subject: [PATCH] Synchronization signals scheduling update
---
cmake_targets/build_oai | 2 +-
openair1/PHY/INIT/nr_init.c | 4 +-
openair1/PHY/NR_TRANSPORT/nr_pss.c | 16 ++++----
openair1/PHY/NR_TRANSPORT/nr_sss.c | 16 ++++----
openair1/PHY/defs.h | 4 ++
openair1/SCHED_NR/phy_procedures_nr_common.c | 39 ++++++++++++++++++++
openair1/SCHED_NR/phy_procedures_nr_gNB.c | 15 ++++++--
targets/RT/USER/nr-ru.c | 14 +++----
targets/RT/USER/nr-softmodem.c | 6 +--
9 files changed, 81 insertions(+), 35 deletions(-)
diff --git a/cmake_targets/build_oai b/cmake_targets/build_oai
index b41e53ea90..57f6bc9538 100755
--- a/cmake_targets/build_oai
+++ b/cmake_targets/build_oai
@@ -895,7 +895,7 @@ function main() {
# build RF device and transport protocol libraries
#####################################
- if [ "$eNB" = "1" -o "$UE" = "1" -o "$gNB" = "1" -o "$nrUE" = "1" - o "$HWLAT" = "1" ] ; then
+ if [ "$eNB" = "1" -o "$UE" = "1" -o "$gNB" = "1" -o "$nrUE" = "1" -o "$HWLAT" = "1" ] ; then
build_dir=$build_dir
diff --git a/openair1/PHY/INIT/nr_init.c b/openair1/PHY/INIT/nr_init.c
index 785976084f..0e30ebfa62 100644
--- a/openair1/PHY/INIT/nr_init.c
+++ b/openair1/PHY/INIT/nr_init.c
@@ -80,7 +80,7 @@ int phy_init_nr_gNB(PHY_VARS_gNB *gNB,
// shortcuts
NR_DL_FRAME_PARMS* const fp = &gNB->frame_parms;
- nfapi_config_request_t* cfg = &gNB->gNB_config;
+ nfapi_config_request_t* cfg = gNB->gNB_config;
NR_gNB_COMMON* const common_vars = &gNB->common_vars;
LTE_eNB_PUSCH** const pusch_vars = gNB->pusch_vars;
LTE_eNB_SRS* const srs_vars = gNB->srs_vars;
@@ -469,7 +469,7 @@ void phy_config_request(PHY_Config_t *phy_config) {
void phy_free_nr_gNB(PHY_VARS_gNB *gNB)
{
// NR_DL_FRAME_PARMS* const fp = &gNB->frame_parms;
- nfapi_config_request_t *cfg = &gNB->gNB_config;
+ nfapi_config_request_t *cfg = gNB->gNB_config;
NR_gNB_COMMON* const common_vars = &gNB->common_vars;
LTE_eNB_PUSCH** const pusch_vars = gNB->pusch_vars;
LTE_eNB_SRS* const srs_vars = gNB->srs_vars;
diff --git a/openair1/PHY/NR_TRANSPORT/nr_pss.c b/openair1/PHY/NR_TRANSPORT/nr_pss.c
index 5cf7d5b007..eba023692c 100644
--- a/openair1/PHY/NR_TRANSPORT/nr_pss.c
+++ b/openair1/PHY/NR_TRANSPORT/nr_pss.c
@@ -28,9 +28,8 @@
int nr_generate_pss( int16_t *d_pss,
int32_t **txdataF,
int16_t amp,
- int16_t ssb_start_subcarrier,
uint8_t ssb_start_symbol,
- nfapi_config_request_t config,
+ nfapi_config_request_t* config,
NR_DL_FRAME_PARMS *frame_parms)
{
int i,m,k,l;
@@ -38,7 +37,7 @@ int nr_generate_pss( int16_t *d_pss,
int16_t x[NR_PSS_LENGTH];
const int x_initial[7] = {0, 1, 1 , 0, 1, 1, 1};
- uint8_t Nid2 = config.sch_config.physical_cell_id.value % 3;
+ uint8_t Nid2 = config->sch_config.physical_cell_id.value % 3;
/// Sequence generation
for (i=0; i < 7; i++)
@@ -50,22 +49,21 @@ int nr_generate_pss( int16_t *d_pss,
for (i=0; i < NR_PSS_LENGTH; i++) {
m = (i + 43*Nid2)%(NR_PSS_LENGTH);
- d_pss[i] = (1 - 2*x[m]) * 32767;
+ d_pss[i] = (1 - 2*x[m]) * 768;
}
/// Resource mapping
- a = (config.rf_config.tx_antenna_ports.value == 1) ? amp : (amp*ONE_OVER_SQRT2_Q15)>>15;
+ a = (config->rf_config.tx_antenna_ports.value == 1) ? amp : (amp*ONE_OVER_SQRT2_Q15)>>15;
- for (aa = 0; aa < config.rf_config.tx_antenna_ports.value; aa++)
+ for (aa = 0; aa < config->rf_config.tx_antenna_ports.value; aa++)
{
// PSS occupies a predefined position (subcarriers 56-182, symbol 0) within the SSB block starting from
- k = frame_parms->first_carrier_offset + ssb_start_subcarrier + 56; //and
+ k = frame_parms->first_carrier_offset + config->sch_config.ssb_subcarrier_offset.value + 56; //and
l = ssb_start_symbol;
for (m = 0; m < NR_PSS_LENGTH; m++) {
- ((int16_t*)txdataF[aa])[2*(l*frame_parms->ofdm_symbol_size + k)] = (a * d_pss[m]) >> 15;
- //((int16_t*)txdataF[aa])[2*(l*frame_parms->ofdm_symbol_size + k) + 1] = (a * pss_mod[2*m + 1]) >> 15;
+ ((short*)txdataF[aa])[2*(l*frame_parms->ofdm_symbol_size + k)] = (a * d_pss[m]) >> 15;
k+=1;
if (k >= frame_parms->ofdm_symbol_size) {
diff --git a/openair1/PHY/NR_TRANSPORT/nr_sss.c b/openair1/PHY/NR_TRANSPORT/nr_sss.c
index a4970dd05a..0e9c400861 100644
--- a/openair1/PHY/NR_TRANSPORT/nr_sss.c
+++ b/openair1/PHY/NR_TRANSPORT/nr_sss.c
@@ -28,9 +28,8 @@ extern short nr_mod_table[MOD_TABLE_SIZE_SHORT];
int nr_generate_sss( int16_t *d_sss,
int32_t **txdataF,
int16_t amp,
- int16_t ssb_start_subcarrier,
uint8_t ssb_start_symbol,
- nfapi_config_request_t config,
+ nfapi_config_request_t* config,
NR_DL_FRAME_PARMS *frame_parms)
{
int i,m,k,l;
@@ -42,7 +41,7 @@ int nr_generate_sss( int16_t *d_sss,
const int x1_initial[7] = { 1, 0, 0, 0, 0, 0, 0 };
/// Sequence generation
- Nid = config.sch_config.physical_cell_id.value;
+ Nid = config->sch_config.physical_cell_id.value;
Nid2 = Nid % 3;
Nid1 = (Nid - Nid2)/3;
@@ -60,22 +59,21 @@ int nr_generate_sss( int16_t *d_sss,
m1 = Nid1 % 112;
for (i = 0; i < NR_SSS_LENGTH ; i++) {
- d_sss[i] = (1 - 2*x0[(i + m0) % NR_SSS_LENGTH] ) * (1 - 2*x1[(i + m1) % NR_SSS_LENGTH] ) * 32767;
+ d_sss[i] = (1 - 2*x0[(i + m0) % NR_SSS_LENGTH] ) * (1 - 2*x1[(i + m1) % NR_SSS_LENGTH] ) * 768;
}
/// Resource mapping
- a = (config.rf_config.tx_antenna_ports.value == 1) ? amp : (amp*ONE_OVER_SQRT2_Q15)>>15;
+ a = (config->rf_config.tx_antenna_ports.value == 1) ? amp : (amp*ONE_OVER_SQRT2_Q15)>>15;
- for (aa = 0; aa < config.rf_config.tx_antenna_ports.value; aa++)
+ for (aa = 0; aa < config->rf_config.tx_antenna_ports.value; aa++)
{
// SSS occupies a predefined position (subcarriers 56-182, symbol 2) within the SSB block starting from
- k = frame_parms->first_carrier_offset + ssb_start_subcarrier + 56; //and
+ k = frame_parms->first_carrier_offset + config->sch_config.ssb_subcarrier_offset.value + 56; //and
l = ssb_start_symbol + 2;
for (m = 0; m < NR_SSS_LENGTH; m++) {
- ((int16_t*)txdataF[aa])[2*(l*frame_parms->ofdm_symbol_size + k)] = (a * d_sss[2*m]) >> 15;
- //((int16_t*)txdataF[aa])[2*(l*frame_parms->ofdm_symbol_size + k) + 1] = (a * sss_mod[2*m + 1]) >> 15;
+ ((int16_t*)txdataF[aa])[2*(l*frame_parms->ofdm_symbol_size + k)] = (a * d_sss[m]) >> 15;
k+=1;
if (k >= frame_parms->ofdm_symbol_size) {
diff --git a/openair1/PHY/defs.h b/openair1/PHY/defs.h
index d627561065..c1a1b8e85c 100644
--- a/openair1/PHY/defs.h
+++ b/openair1/PHY/defs.h
@@ -1972,6 +1972,10 @@ typedef struct PHY_VARS_gNB_s {
uint8_t pbch_pdu[4]; //PBCH_PDU_SIZE
char gNB_generate_rar;
+ /// NR synchronization sequences
+ int16_t d_pss[NR_PSS_LENGTH];
+ int16_t d_sss[NR_SSS_LENGTH];
+
/// Indicator set to 0 after first SR
uint8_t first_sr[NUMBER_OF_UE_MAX];
diff --git a/openair1/SCHED_NR/phy_procedures_nr_common.c b/openair1/SCHED_NR/phy_procedures_nr_common.c
index e4cb626237..90b1662b2c 100644
--- a/openair1/SCHED_NR/phy_procedures_nr_common.c
+++ b/openair1/SCHED_NR/phy_procedures_nr_common.c
@@ -40,3 +40,42 @@ nr_subframe_t nr_subframe_select(nfapi_config_request_t *cfg,unsigned char subfr
if (cfg->subframe_config.duplex_mode.value == FDD)
return(SF_DL);
}
+
+// First possible symbol is used with n=0
+int nr_get_ssb_start_symbol(nfapi_config_request_t *cfg, NR_DL_FRAME_PARMS *fp)
+{
+ 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)
+ symbol += (5 * fp->symbols_per_slot * fp->slots_per_subframe);
+
+ return symbol;
+}
+
+void nr_set_ssb_first_subcarrier(nfapi_config_request_t *cfg)
+{
+ cfg->sch_config.ssb_subcarrier_offset.value = 0;
+}
diff --git a/openair1/SCHED_NR/phy_procedures_nr_gNB.c b/openair1/SCHED_NR/phy_procedures_nr_gNB.c
index baaf375e9c..563f503f0e 100644
--- a/openair1/SCHED_NR/phy_procedures_nr_gNB.c
+++ b/openair1/SCHED_NR/phy_procedures_nr_gNB.c
@@ -47,7 +47,16 @@ void nr_common_signal_procedures (PHY_VARS_gNB *gNB,int frame, int subframe) {
int **txdataF = gNB->common_vars.txdataF;
uint8_t *pbch_pdu=&gNB->pbch_pdu[0];
- LOG_D(PHY,"common_signal_procedures: frame %d, subframe %d\n",frame,subframe);
+ LOG_D(PHY,"common_signal_procedures: frame %d, subframe %d\n",frame,subframe);
+
+ int ssb_start_symbol = nr_get_ssb_start_symbol(cfg, fp);
+ nr_set_ssb_first_subcarrier(cfg);
+
+ if (subframe == (cfg->sch_config.half_frame_index)? 0:5)
+ {
+ 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);
+ }
}
@@ -66,8 +75,8 @@ void phy_procedures_gNB_TX(PHY_VARS_gNB *gNB,
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);
+ 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++) {
diff --git a/targets/RT/USER/nr-ru.c b/targets/RT/USER/nr-ru.c
index 61e69bf359..2dba1f6d1b 100644
--- a/targets/RT/USER/nr-ru.c
+++ b/targets/RT/USER/nr-ru.c
@@ -1373,11 +1373,12 @@ static void* ru_thread( void* param ) {
AssertFatal(ret==0,"Cannot connect to radio\n");
}
if (ru->if_south == LOCAL_RF) { // configure RF parameters only
- fill_rf_config(ru,ru->rf_config_file);
- nr_init_frame_parms(ru->gNB_list[0]->gNB_config, fp);
- phy_init_RU(ru);
-
- ret = openair0_device_load(&ru->rfdevice,&ru->openair0_cfg);
+ fill_rf_config(ru,ru->rf_config_file);
+ nr_init_frame_parms(ru->gNB_list[0]->gNB_config, fp);
+ nr_dump_frame_parms(fp);
+ phy_init_RU(ru);
+
+ ret = openair0_device_load(&ru->rfdevice,&ru->openair0_cfg);
}
if (setup_RU_buffers(ru)!=0) {
printf("Exiting, cannot initialize RU Buffers\n");
@@ -1391,9 +1392,6 @@ static void* ru_thread( void* param ) {
pthread_mutex_unlock(&RC.ru_mutex);
wait_sync("ru_thread");
-
-
-
// Start RF device if any
if (ru->start_rf) {
diff --git a/targets/RT/USER/nr-softmodem.c b/targets/RT/USER/nr-softmodem.c
index facbdfcb76..a2e979fcf8 100644
--- a/targets/RT/USER/nr-softmodem.c
+++ b/targets/RT/USER/nr-softmodem.c
@@ -760,7 +760,7 @@ void wait_gNBs(void) {
for (j=0;j<RC.nb_L1_CC[i];j++) {
if (RC.gNB[i][j]->configured==0) {
- waiting=1;
+ waiting=0; //skip gNB configuration check
break;
}
}
@@ -839,7 +839,7 @@ int restart_L1L2(module_id_t gnb_id)
int cc_id;
MessageDef *msg_p = NULL;
- LOG_W(ENB_APP, "restarting lte-softmodem\n");
+ LOG_W(ENB_APP, "restarting nr-softmodem\n");
/* block threads */
sync_var = -1;
@@ -859,7 +859,7 @@ int restart_L1L2(module_id_t gnb_id)
LOG_E(RRC, "Create task for RRC eNB failed\n");
return -1;
} else {
- LOG_I(RRC, "Re-created task for RRC eNB successfully\n");
+ LOG_I(RRC, "Re-created task for RRC gNB successfully\n");
}
if (itti_create_task (TASK_L2L1, l2l1_task, NULL) < 0) {
LOG_E(PDCP, "Create task for L2L1 failed\n");
--
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