yigid/openairinterface5g
1
0
Fork 0
mirror of https://gitlab.eurecom.fr/oai/openairinterface5g.git synced 2026-07-13 04:30:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

setup DLSIM to test type0 DLSCH allocation

Browse Source 
Signed-off-by: Francesco Mani <email@francescomani.it>
This commit is contained in:
Francesco Mani
2026-06-11 18:10:04 +02:00
parent 29e75444e6
commit fe211685ec
6 changed files with 121 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

87
openair1/SIMULATION/NR_PHY/dlsim.c
View File

@@ -169,11 +169,18 @@ void processSlotTX(void *arg) {}
// needed for some functions
openair0_config_t openair0_cfg[MAX_CARDS];
void update_ptrs_config(NR_CellGroupConfig_t *secondaryCellGroup, uint16_t *rbSize, uint8_t *mcsIndex,int8_t *ptrs_arg);
void update_dmrs_config(NR_CellGroupConfig_t *scg, int8_t *dmrs_arg);
void update_ptrs_config(NR_BWP_Downlink_t *bwp, int *rbSize, uint8_t *mcsIndex,int8_t *ptrs_arg);
void update_dmrs_config(NR_BWP_Downlink_t *bwp, int8_t *dmrs_arg);
/* specific dlsim DL preprocessor: uses rbStart/rbSize/mcs/nrOfLayers from command line of dlsim */
int g_mcsIndex = -1, g_mcsTableIdx = 0, g_rbStart = -1, g_rbSize = -1, g_nrOfLayers = 1, g_pmi = 0;
int g_mcsIndex = -1, g_mcsTableIdx = 0, g_rbStart = -1, g_rbSize = -1, g_nrOfLayers = 1, g_pmi = 0, g_nb_rb_ranges = 0, N_RB_DL = 106;
nr_pdsch_allocation_type_t alloc_type = PDSCH_TYPE1;
#define MAX_RB_RANGES 16
typedef struct {
int start;
int size;
} rb_range_t;
rb_range_t g_rb_ranges[MAX_RB_RANGES];
void nr_dlsim_preprocessor(gNB_MAC_INST *nr_mac, post_process_pdsch_t *pp_pdsch)
{
@@ -210,12 +217,25 @@ void nr_dlsim_preprocessor(gNB_MAC_INST *nr_mac, post_process_pdsch_t *pp_pdsch)
NR_sched_pdsch_t sched_pdsch = {
.rbStart = g_rbStart,
.rbSize = g_rbSize,
.alloc_type = PDSCH_TYPE1,
.alloc_type = alloc_type,
.bwp_info = get_pdsch_bwp_start_size(nr_mac, UE_info),
.mcs = g_mcsIndex,
.nrOfLayers = g_nrOfLayers,
.pm_index = g_pmi,
};
if (alloc_type == PDSCH_TYPE0) {
sched_pdsch.rbSize = 0;
memset(sched_pdsch.rbBitmap, 0, sizeof(sched_pdsch.rbBitmap));
for (int r = 0; r < g_nb_rb_ranges; r++) {
for (int rb = g_rb_ranges[r].start; rb < g_rb_ranges[r].start + g_rb_ranges[r].size; rb++) {
AssertFatal(rb < N_RB_DL, "RB index %d exceeds BWP size %d\n", rb, N_RB_DL);
sched_pdsch.rbBitmap[rb / 8] |= (1 << (rb % 8));
sched_pdsch.rbSize++;
}
}
}
/* the following might override the table that is mandated by RRC
* configuration */
current_BWP->mcsTableIdx = g_mcsTableIdx;
@@ -239,13 +259,13 @@ void nr_dlsim_preprocessor(gNB_MAC_INST *nr_mac, post_process_pdsch_t *pp_pdsch)
sched_pdsch.Qm = nr_get_Qm_dl(sched_pdsch.mcs, current_BWP->mcsTableIdx);
sched_pdsch.R = nr_get_code_rate_dl(sched_pdsch.mcs, current_BWP->mcsTableIdx);
sched_pdsch.tb_size = nr_compute_tbs(sched_pdsch.Qm,
sched_pdsch.R,
sched_pdsch.rbSize,
sched_pdsch.tda_info.nrOfSymbols,
sched_pdsch.dmrs_parms.N_PRB_DMRS * sched_pdsch.dmrs_parms.N_DMRS_SLOT,
0 /* N_PRB_oh, 0 for initialBWP */,
0 /* tb_scaling */,
sched_pdsch.nrOfLayers) >> 3;
sched_pdsch.R,
sched_pdsch.rbSize,
sched_pdsch.tda_info.nrOfSymbols,
sched_pdsch.dmrs_parms.N_PRB_DMRS * sched_pdsch.dmrs_parms.N_DMRS_SLOT,
0 /* N_PRB_oh, 0 for initialBWP */,
0 /* tb_scaling */,
sched_pdsch.nrOfLayers) >> 3;
const nr_pdsch_AntennaPorts_t *p = &nr_mac->radio_config.pdsch_AntennaPorts;
sched_pdsch.ant_port_idx.numSpatialStreamIndices = p->XP * p->N1 * p->N2;
@@ -367,7 +387,7 @@ int main(int argc, char **argv)
//double pbch_sinr;
//int pbch_tx_ant;
int N_RB_DL=106,mu=1;
int mu = 1;
//unsigned char frame_type = 0;
@@ -395,7 +415,6 @@ int main(int argc, char **argv)
uint16_t pdu_bit_map = 0x0;
uint16_t dlPtrsSymPos = 0;
uint16_t ptrsSymbPerSlot = 0;
uint16_t rbSize = 106;
uint8_t mcsIndex = 9;
uint8_t dlsch_threads = 0;
int chest_type[2] = {0};
@@ -423,7 +442,7 @@ int main(int argc, char **argv)
void *d_channel_coeffs_gpu = NULL;
#endif
while ((c = getopt(argc, argv, "--:O:f:hA:p:g:i:n:s:S:t:v:x:y:z:o:H:M:N:F:GR:d:PI:L:a:b:e:m:w:T:U:q:X:Y:Z:Q:E")) != -1) {
while ((c = getopt(argc, argv, "--:O:f:hA:p:g:i:n:s:S:t:v:x:y:z:o:H:M:N:F:GR:d:D:PI:L:a:b:e:m:w:T:U:q:X:Y:Z:Q:E")) != -1) {
/* ignore long options starting with '--', option '-O' and their arguments that are handled by configmodule */
/* with this opstring getopt returns 1 for non-option arguments, refer to 'man 3 getopt' */
if (c == 1 || c == '-' || c == 'O')
@@ -531,6 +550,22 @@ int main(int argc, char **argv)
N_RB_DL = atoi(optarg);
break;
case 'D':
alloc_type = PDSCH_TYPE0;
char *s = strtok(optarg, ",");
int i = 0;
while (s) {
AssertFatal(i < MAX_RB_RANGES, "Too many RB ranges, max is %d\n", MAX_RB_RANGES);
if (sscanf(s, "%d:%d", &g_rb_ranges[i].start, &g_rb_ranges[i].size) != 2) {
printf("Invalid RB range format in '%s', expected start:size\n", s);
exit(-1);
}
i++;
s = strtok(NULL, ",");
}
g_nb_rb_ranges = i;
break;
case 'F':
input_fd = fopen(optarg,"r");
@@ -817,14 +852,22 @@ int main(int argc, char **argv)
int ssb_index = 0;
NR_CellGroupConfig_t *secondaryCellGroup = get_default_secondaryCellGroup(scc, UE_Capability_nr, 0, 1, &conf, uid, ssb_index);
secondaryCellGroup->spCellConfig->reconfigurationWithSync = get_reconfiguration_with_sync(rnti, uid, scc, frame);
NR_BWP_Downlink_t *bwp = secondaryCellGroup->spCellConfig->spCellConfigDedicated->downlinkBWP_ToAddModList->list.array[0];
if (alloc_type == PDSCH_TYPE0) {
bwp->bwp_Dedicated->pdsch_Config->choice.setup->resourceAllocation = NR_PDSCH_Config__resourceAllocation_resourceAllocationType0;
g_rbSize = 0;
for (int r = 0; r < g_nb_rb_ranges; r++)
g_rbSize += g_rb_ranges[r].size;
}
/* -U option modify DMRS */
if(modify_dmrs) {
update_dmrs_config(secondaryCellGroup, dmrs_arg);
update_dmrs_config(bwp, dmrs_arg);
}
/* -T option enable PTRS */
if(enable_ptrs) {
update_ptrs_config(secondaryCellGroup, &rbSize, &mcsIndex, ptrs_arg);
update_ptrs_config(bwp, &g_rbSize, &mcsIndex, ptrs_arg);
}
@@ -1111,7 +1154,7 @@ int main(int argc, char **argv)
1<<pdsch_pdu_rel15->PTRSTimeDensity,
pdsch_pdu_rel15->dlDmrsSymbPos);
ptrsSymbPerSlot = get_ptrs_symbols_in_slot(dlPtrsSymPos, pdsch_pdu_rel15->StartSymbolIndex, pdsch_pdu_rel15->NrOfSymbols);
ptrsRePerSymb = ((pdsch_pdu_rel15->rbSize + pdsch_pdu_rel15->PTRSFreqDensity - 1) / pdsch_pdu_rel15->PTRSFreqDensity);
ptrsRePerSymb = ((g_rbSize + pdsch_pdu_rel15->PTRSFreqDensity - 1) / pdsch_pdu_rel15->PTRSFreqDensity);
LOG_D(PHY,"[DLSIM] PTRS Symbols in a slot: %2u, RE per Symbol: %3u, RE in a slot %4d\n", ptrsSymbPerSlot, ptrsRePerSymb, ptrsSymbPerSlot * ptrsRePerSymb);
}
@@ -1204,8 +1247,7 @@ int main(int argc, char **argv)
double ts = 1.0/(frame_parms->subcarrier_spacing * frame_parms->ofdm_symbol_size);
// Estimate noise power from the transmitter level and SNR
double sigma2 =
compute_noise_variance(txlev_sum, UE->frame_parms.ofdm_symbol_size, pdsch_pdu_rel15->rbSize, 1, SNR, n_trials);
double sigma2 = compute_noise_variance(txlev_sum, UE->frame_parms.ofdm_symbol_size, g_rbSize, 1, SNR, n_trials);
const int padding_len = gNB2UE->channel_length - 1;
const int padded_slot_length = slot_length + padding_len;
float *h_tx_ptr = (float *)h_tx_sig_pinned;
@@ -1578,9 +1620,8 @@ int main(int argc, char **argv)
}
void update_ptrs_config(NR_CellGroupConfig_t *secondaryCellGroup, uint16_t *rbSize, uint8_t *mcsIndex, int8_t *ptrs_arg)
void update_ptrs_config(NR_BWP_Downlink_t *bwp, int *rbSize, uint8_t *mcsIndex, int8_t *ptrs_arg)
{
NR_BWP_Downlink_t *bwp=secondaryCellGroup->spCellConfig->spCellConfigDedicated->downlinkBWP_ToAddModList->list.array[0];
long ptrsFreqDenst[] = {25, 115};
long ptrsTimeDenst[] = {2, 4, 10};
@@ -1617,7 +1658,7 @@ void update_ptrs_config(NR_CellGroupConfig_t *secondaryCellGroup, uint16_t *rbSi
rrc_config_dl_ptrs_params(bwp, ptrsFreqDenst, ptrsTimeDenst, &epre_Ratio, &reOffset);
}
void update_dmrs_config(NR_CellGroupConfig_t *scg, int8_t* dmrs_arg)
void update_dmrs_config(NR_BWP_Downlink_t *bwp, int8_t* dmrs_arg)
{
int8_t mapping_type = typeA;//default value
int8_t add_pos = pdsch_dmrs_pos0;//default value
@@ -1646,8 +1687,6 @@ void update_dmrs_config(NR_CellGroupConfig_t *scg, int8_t* dmrs_arg)
dmrs_config_type = NFAPI_NR_DMRS_TYPE2;
}
NR_BWP_Downlink_t *bwp = scg->spCellConfig->spCellConfigDedicated->downlinkBWP_ToAddModList->list.array[0];
AssertFatal((bwp->bwp_Dedicated->pdsch_Config != NULL && bwp->bwp_Dedicated->pdsch_Config->choice.setup != NULL), "Base RRC reconfig structures are not allocated.\n");
if(mapping_type == typeA) {