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improve function that map ro to ssb in the UE: make dynamic smaller memory allocation than array[max][max][.... Saves about 100MB of memory and avoid real time glitch of milli seconds of memset(110MB)

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This commit is contained in:
Laurent THOMAS
2024-03-12 09:53:02 +01:00
parent 8931e13363
commit 77d749ba87
5 changed files with 171 additions and 263 deletions
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openair2/LAYER2/NR_MAC_COMMON/nr_mac.h
+1 -1
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@@ -430,7 +430,7 @@ typedef struct prach_occasion_info {
// PRACH occasion slot details
// A PRACH occasion slot is a series of PRACH occasions in time (symbols) and frequency
typedef struct prach_occasion_slot {
prach_occasion_info_t prach_occasion[MAX_TDM][MAX_FDM]; // Starting symbol of each PRACH occasions in a slot
prach_occasion_info_t *prach_occasion; // Starting symbol of each PRACH occasions in a slot
uint8_t nb_of_prach_occasion_in_time;
uint8_t nb_of_prach_occasion_in_freq;
} prach_occasion_slot_t;
openair2/LAYER2/NR_MAC_UE/mac_defs.h
+3 -3
View File
@@ -423,15 +423,15 @@ typedef struct prach_association_pattern {
// SSB details
typedef struct ssb_info {
bool transmitted; // True if the SSB index is transmitted according to the SSB positions map configuration
prach_occasion_info_t *mapped_ro[MAX_NB_RO_PER_SSB_IN_ASSOCIATION_PATTERN]; // List of mapped RACH Occasions to this SSB index
uint32_t nb_mapped_ro; // Total number of mapped ROs to this SSB index
} ssb_info_t;
// List of all the possible SSBs and their details
typedef struct ssb_list_info {
ssb_info_t tx_ssb[MAX_NB_SSB];
uint8_t nb_tx_ssb;
ssb_info_t *tx_ssb;
int nb_tx_ssb;
int nb_ssb_per_index[MAX_NB_SSB];
} ssb_list_info_t;
typedef struct nr_lcordered_info_s {
openair2/LAYER2/NR_MAC_UE/main_ue_nr.c
+10 -4
View File
@@ -72,10 +72,8 @@ void nr_ue_init_mac(NR_UE_MAC_INST_t *mac)
memset(&mac->ssb_measurements, 0, sizeof(mac->ssb_measurements));
memset(&mac->ul_time_alignment, 0, sizeof(mac->ul_time_alignment));
for (int i = 0; i < MAX_NUM_BWP_UE; i++) {
memset(&mac->ssb_list[i], 0, sizeof(mac->ssb_list[i]));
memset(&mac->prach_assoc_pattern[i], 0, sizeof(mac->prach_assoc_pattern[i]));
}
memset(mac->ssb_list, 0, sizeof(mac->ssb_list));
memset(mac->prach_assoc_pattern, 0, sizeof(mac->prach_assoc_pattern));
for (int k = 0; k < NR_MAX_HARQ_PROCESSES; k++) {
mac->ul_harq_info[k].last_ndi = -1; // initialize to invalid value
mac->dl_harq_info[k].last_ndi = -1; // initialize to invalid value
@@ -189,6 +187,14 @@ void reset_mac_inst(NR_UE_MAC_INST_t *nr_mac)
// release, if any, Temporary C-RNTI
nr_mac->ra.t_crnti = 0;
// free RACH structs
for (int i = 0; i < MAX_NUM_BWP_UE; i++) {
free(nr_mac->ssb_list[i].tx_ssb);
for (int j = 0; j < MAX_NB_PRACH_CONF_PERIOD_IN_ASSOCIATION_PATTERN_PERIOD; j++)
for (int k = 0; k < MAX_NB_FRAME_IN_PRACH_CONF_PERIOD; k++)
for (int l = 0; l < MAX_NB_SLOT_IN_FRAME; l++)
free(nr_mac->prach_assoc_pattern[i].prach_conf_period_list[j].prach_occasion_slot_map[k][l].prach_occasion);
}
// reset BFI_COUNTER
// TODO beam failure procedure not implemented
openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c
+3 -9
View File
@@ -444,18 +444,12 @@ bool monitior_dci_for_other_SI(NR_UE_MAC_INST_t *mac,
for (int i = 0; i < duration; i++) {
if (((frame * slots_per_frame + slot - offset - i) % period) == 0) {
int N = mac->ssb_list[bwp_id].nb_tx_ssb;
int K = 0; // k_th transmitted SSB
for (int i = 0; i < mac->mib_ssb; i++) {
if(mac->ssb_list[bwp_id].tx_ssb[i].transmitted)
K++;
}
int K = mac->ssb_list->nb_ssb_per_index[mac->mib_ssb];
// numbering current frame and slot in terms of monitoring occasions in window
int current_monitor_occasion = ((abs_slot - mac->si_window_start) % period) +
(duration * (abs_slot - mac->si_window_start) / period);
if (current_monitor_occasion % N == K)
return true;
else
return false;
return current_monitor_occasion % N == K;
}
}
}
openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
+154 -246
View File
@@ -1697,19 +1697,19 @@ static void build_ro_list(NR_UE_MAC_INST_t *mac)
prach_occasion_slot_t *slot_map = &prach_conf_period_list->prach_occasion_slot_map[frame_idx][slot];
slot_map->nb_of_prach_occasion_in_time = N_t_slot;
slot_map->nb_of_prach_occasion_in_freq = nb_fdm;
slot_map->prach_occasion = malloc(N_t_slot * nb_fdm * sizeof(*slot_map->prach_occasion));
AssertFatal(slot_map->prach_occasion, "no memory available\n");
for (int n_prach_occ_in_time = 0; n_prach_occ_in_time < N_t_slot; n_prach_occ_in_time++) {
uint8_t start_symbol = prach_conf_start_symbol + n_prach_occ_in_time * N_dur;
LOG_D(NR_MAC,"PRACH Occ in time %d\n", n_prach_occ_in_time);
for (int n_prach_occ_in_freq = 0; n_prach_occ_in_freq < nb_fdm; n_prach_occ_in_freq++) {
prach_occasion_info_t *prach_occasion_p = &slot_map->prach_occasion[n_prach_occ_in_time][n_prach_occ_in_freq];
prach_occasion_p->start_symbol = start_symbol;
prach_occasion_p->fdm = n_prach_occ_in_freq;
prach_occasion_p->frame = frame;
prach_occasion_p->slot = slot;
prach_occasion_p->format = format;
slot_map->prach_occasion[n_prach_occ_in_time * nb_fdm + n_prach_occ_in_freq] =
(prach_occasion_info_t){.start_symbol = start_symbol,
.fdm = n_prach_occ_in_freq,
.frame = frame,
.slot = slot,
.format = format};
prach_assoc_pattern->prach_conf_period_list[period_idx].nb_of_prach_occasion++;
LOG_D(NR_MAC,"Adding a PRACH occasion: frame %u, slot-symbol %d-%d, occ_in_time-occ_in-freq %d-%d, nb ROs in conf period %d, for this slot: RO# in time %d, RO# in freq %d\n",
@@ -1734,17 +1734,15 @@ static void build_ssb_list(NR_UE_MAC_INST_t *mac)
fapi_nr_config_request_t *cfg = &mac->phy_config.config_req;
ssb_list->nb_tx_ssb = 0;
for(int ssb_index = 0; ssb_index < 64; ssb_index++) {
for (int ssb_index = 0; ssb_index < MAX_NB_SSB; ssb_index++) {
uint32_t curr_mask = cfg->ssb_table.ssb_mask_list[ssb_index / 32].ssb_mask;
// check if if current SSB is transmitted
if ((curr_mask >> (31 - (ssb_index % 32))) & 0x01) {
ssb_list->nb_tx_ssb++;
ssb_list->tx_ssb[ssb_index].transmitted = true;
LOG_D(NR_MAC,"SSB idx %d transmitted\n", ssb_index);
ssb_list->nb_ssb_per_index[ssb_index]=ssb_list->nb_tx_ssb;
}
else
ssb_list->tx_ssb[ssb_index].transmitted = false;
}
ssb_list->tx_ssb = calloc(ssb_list->nb_tx_ssb, sizeof(*ssb_list->tx_ssb));
}
// Map the transmitted SSBs to the ROs and create the association pattern according to the config
@@ -1755,49 +1753,18 @@ static void map_ssb_to_ro(NR_UE_MAC_INST_t *mac)
NR_RACH_ConfigCommon_t *setup = mac->current_UL_BWP->rach_ConfigCommon;
NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR ssb_perRACH_config = setup->ssb_perRACH_OccasionAndCB_PreamblesPerSSB->present;
bool multiple_ssb_per_ro; // true if more than one or exactly one SSB per RACH occasion, false if more than one RO per SSB
uint8_t ssb_rach_ratio; // Nb of SSBs per RACH or RACHs per SSB
uint16_t required_nb_of_prach_occasion; // Nb of RACH occasions required to map all the SSBs
uint8_t required_nb_of_prach_conf_period; // Nb of PRACH configuration periods required to map all the SSBs
const struct {
// true if more than one or exactly one SSB per RACH occasion, false if more than one RO per SSB
bool multiple_ssb_per_ro;
// Nb of SSBs per RACH or RACHs per SSB
int ssb_rach_ratio;
} config[] = {{false, 0}, {false, 8}, {false, 4}, {false, 2}, {true, 1}, {true, 2}, {true, 4}, {true, 8}, {true, 16}};
AssertFatal(ssb_perRACH_config <= NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_sixteen,
"Unsupported ssb_perRACH_config %d\n",
ssb_perRACH_config);
const bool multiple_ssb_per_ro = config[ssb_perRACH_config].multiple_ssb_per_ro;
const int ssb_rach_ratio = config[ssb_perRACH_config].ssb_rach_ratio;
// Determine the SSB to RACH mapping ratio
switch (ssb_perRACH_config){
case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_oneEighth:
multiple_ssb_per_ro = false;
ssb_rach_ratio = 8;
break;
case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_oneFourth:
multiple_ssb_per_ro = false;
ssb_rach_ratio = 4;
break;
case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_oneHalf:
multiple_ssb_per_ro = false;
ssb_rach_ratio = 2;
break;
case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_one:
multiple_ssb_per_ro = true;
ssb_rach_ratio = 1;
break;
case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_two:
multiple_ssb_per_ro = true;
ssb_rach_ratio = 2;
break;
case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_four:
multiple_ssb_per_ro = true;
ssb_rach_ratio = 4;
break;
case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_eight:
multiple_ssb_per_ro = true;
ssb_rach_ratio = 8;
break;
case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_sixteen:
multiple_ssb_per_ro = true;
ssb_rach_ratio = 16;
break;
default:
AssertFatal(1 == 0, "Unsupported ssb_perRACH_config %d\n", ssb_perRACH_config);
break;
}
LOG_D(NR_MAC,"SSB rach ratio %d, Multiple SSB per RO %d\n", ssb_rach_ratio, multiple_ssb_per_ro);
const int bwp_id = mac->current_UL_BWP->bwp_id;
@@ -1809,230 +1776,171 @@ static void map_ssb_to_ro(NR_UE_MAC_INST_t *mac)
// (No PRACH occasions are conflicting with SSBs nor TDD_UL_DL_ConfigurationCommon schedule)
// There is only one possible association period which can contain up to 16 PRACH configuration periods
LOG_D(NR_MAC,"Evaluate the number of PRACH configuration periods required to map all the SSBs and set the association period\n");
if (true == multiple_ssb_per_ro) {
required_nb_of_prach_occasion = ((ssb_list->nb_tx_ssb - 1) + ssb_rach_ratio) / ssb_rach_ratio;
}
else {
required_nb_of_prach_occasion = ssb_list->nb_tx_ssb * ssb_rach_ratio;
}
const int required_nb_of_prach_occasion =
multiple_ssb_per_ro ? ((ssb_list->nb_tx_ssb - 1) + ssb_rach_ratio) / ssb_rach_ratio : ssb_list->nb_tx_ssb * ssb_rach_ratio;
prach_association_pattern_t *prach_assoc_pattern = &mac->prach_assoc_pattern[bwp_id];
prach_association_period_t *prach_association_period_list = &prach_assoc_pattern->prach_association_period_list[0];
AssertFatal(prach_assoc_pattern->prach_conf_period_list[0].nb_of_prach_occasion > 0,
"prach_assoc_pattern.prach_conf_period_list[0].nb_of_prach_occasion shouldn't be 0 (nb_tx_ssb %d, ssb_rach_ratio %d)\n",
ssb_list->nb_tx_ssb, ssb_rach_ratio);
required_nb_of_prach_conf_period =
((required_nb_of_prach_occasion - 1) + prach_assoc_pattern->prach_conf_period_list[0].nb_of_prach_occasion)
/ prach_assoc_pattern->prach_conf_period_list[0].nb_of_prach_occasion;
const prach_conf_period_t *prach_conf_period = &prach_assoc_pattern->prach_conf_period_list[0];
AssertFatal(prach_conf_period->nb_of_prach_occasion > 0,
"prach_conf_period->nb_of_prach_occasion shouldn't be 0 (nb_tx_ssb %d, ssb_rach_ratio %d)\n",
ssb_list->nb_tx_ssb,
ssb_rach_ratio);
prach_association_period_t *prach_association_period = &prach_assoc_pattern->prach_association_period_list[0];
const int required_nb_of_prach_conf_period =
((required_nb_of_prach_occasion - 1) + prach_conf_period->nb_of_prach_occasion) / prach_conf_period->nb_of_prach_occasion;
if (required_nb_of_prach_conf_period == 1) {
prach_association_period_list->nb_of_prach_conf_period = 1;
prach_association_period->nb_of_prach_conf_period = 1;
}
else if (required_nb_of_prach_conf_period == 2) {
prach_association_period_list->nb_of_prach_conf_period = 2;
prach_association_period->nb_of_prach_conf_period = 2;
}
else if (required_nb_of_prach_conf_period <= 4) {
prach_association_period_list->nb_of_prach_conf_period = 4;
prach_association_period->nb_of_prach_conf_period = 4;
}
else if (required_nb_of_prach_conf_period <= 8) {
prach_association_period_list->nb_of_prach_conf_period = 8;
prach_association_period->nb_of_prach_conf_period = 8;
}
else if (required_nb_of_prach_conf_period <= 16) {
prach_association_period_list->nb_of_prach_conf_period = 16;
prach_association_period->nb_of_prach_conf_period = 16;
}
else {
AssertFatal(1 == 0, "Invalid number of PRACH config periods within an association period %d\n", required_nb_of_prach_conf_period);
}
prach_assoc_pattern->nb_of_assoc_period = 1; // WIP: only one possible association period
prach_association_period_list->nb_of_frame = prach_association_period_list->nb_of_prach_conf_period * prach_assoc_pattern->prach_conf_period_list[0].nb_of_frame;;
prach_assoc_pattern->nb_of_frame = prach_association_period_list->nb_of_frame;
prach_association_period->nb_of_frame = prach_association_period->nb_of_prach_conf_period * prach_conf_period->nb_of_frame;
prach_assoc_pattern->nb_of_frame = prach_association_period->nb_of_frame;
LOG_D(NR_MAC,"Assoc period %d, Nb of frames in assoc period %d\n",
prach_association_period_list->nb_of_prach_conf_period,
prach_association_period_list->nb_of_frame);
LOG_D(NR_MAC,
"Assoc period %d, Nb of frames in assoc period %d\n",
prach_association_period->nb_of_prach_conf_period,
prach_association_period->nb_of_frame);
// Proceed to the SSB to RO mapping
uint8_t ssb_idx = 0;
uint8_t prach_configuration_period_idx; // PRACH Configuration period index within the association pattern
prach_conf_period_t *prach_conf_period_p;
// Set the starting PRACH Configuration period index in the association_pattern map for this particular association period
int prach_configuration_period_idx =
0; // WIP: only one possible association period so the starting PRACH configuration period is automatically 0
// Map all the association periods within the association pattern period
LOG_D(NR_MAC,"Proceed to the SSB to RO mapping\n");
for (int association_period_idx = 0; association_period_idx < prach_assoc_pattern->nb_of_assoc_period; association_period_idx++) {
uint8_t frame=0;
uint8_t slot=0;
uint8_t ro_in_time=0;
uint8_t ro_in_freq=0;
// Set the starting PRACH Configuration period index in the association_pattern map for this particular association period
prach_configuration_period_idx = 0; // WIP: only one possible association period so the starting PRACH configuration period is automatically 0
// Check if we need to map multiple SSBs per RO or multiple ROs per SSB
if (true == multiple_ssb_per_ro) {
// --------------------
// --------------------
// Multiple SSBs per RO
// --------------------
// --------------------
// Check if we need to map multiple SSBs per RO or multiple ROs per SSB
if (multiple_ssb_per_ro) {
const prach_association_period_t *end =
prach_assoc_pattern->prach_association_period_list + prach_assoc_pattern->nb_of_assoc_period;
for (prach_association_period_t *prach_period = prach_assoc_pattern->prach_association_period_list; prach_period < end;
prach_period++) {
// Set the starting PRACH Configuration period index in the association_pattern map for this particular association period
// WIP: only one possible association period so the starting PRACH configuration period is automatically 0
// WIP: For the moment, only map each SSB idx once per association period if configuration is multiple SSBs per RO
// this is true if no PRACH occasions are conflicting with SSBs nor TDD_UL_DL_ConfigurationCommon schedule
ssb_idx = 0;
// Go through the list of PRACH config periods within this association period
prach_association_period_list = &prach_assoc_pattern->prach_association_period_list[association_period_idx];
for (int n_prach_conf=0; n_prach_conf < prach_association_period_list->nb_of_prach_conf_period; n_prach_conf++, prach_configuration_period_idx++) {
int ssb_idx = 0;
bool done = false;
for (int i = 0; i < prach_period->nb_of_prach_conf_period && !done; i++, prach_configuration_period_idx++) {
prach_period->prach_conf_period_list[i] = &prach_assoc_pattern->prach_conf_period_list[prach_configuration_period_idx];
prach_conf_period_t *prach_conf = prach_period->prach_conf_period_list[i];
// Build the association period with its association PRACH Configuration indexes
prach_conf_period_p = &prach_assoc_pattern->prach_conf_period_list[prach_configuration_period_idx];
prach_association_period_list->prach_conf_period_list[n_prach_conf] = prach_conf_period_p;
// Go through all the ROs within the PRACH config period
for (frame=0; frame<prach_conf_period_p->nb_of_frame; frame++) {
for (slot=0; slot<prach_conf_period_p->nb_of_slot; slot++) {
for (ro_in_time=0; ro_in_time<prach_conf_period_p->prach_occasion_slot_map[frame][slot].nb_of_prach_occasion_in_time; ro_in_time++) {
for (ro_in_freq=0; ro_in_freq<prach_conf_period_p->prach_occasion_slot_map[frame][slot].nb_of_prach_occasion_in_freq; ro_in_freq++) {
prach_occasion_info_t *ro_p = &prach_conf_period_p->prach_occasion_slot_map[frame][slot].prach_occasion[ro_in_time][ro_in_freq];
for (int frame = 0; frame < prach_conf->nb_of_frame && !done; frame++) {
for (int slot = 0; slot < prach_conf->nb_of_slot && !done; slot++) {
prach_occasion_slot_t *slot_map = &prach_conf->prach_occasion_slot_map[frame][slot];
for (int ro_in_time = 0; ro_in_time < slot_map->nb_of_prach_occasion_in_time && !done; ro_in_time++) {
for (int ro_in_freq = 0; ro_in_freq < slot_map->nb_of_prach_occasion_in_freq && !done; ro_in_freq++) {
prach_occasion_info_t *ro_p =
slot_map->prach_occasion + ro_in_time * slot_map->nb_of_prach_occasion_in_freq + ro_in_freq;
// Go through the list of transmitted SSBs and map the required amount of SSBs to this RO
// WIP: For the moment, only map each SSB idx once per association period if configuration is multiple SSBs per RO
// this is true if no PRACH occasions are conflicting with SSBs nor TDD_UL_DL_ConfigurationCommon schedule
for (; ssb_idx<MAX_NB_SSB; ssb_idx++) {
for (; ssb_idx < ssb_list->nb_tx_ssb; ssb_idx++) {
ssb_info_t *tx_ssb = ssb_list->tx_ssb + ssb_idx;
// Map only the transmitted ssb_idx
if (true == ssb_list->tx_ssb[ssb_idx].transmitted) {
ro_p->mapped_ssb_idx[ro_p->nb_mapped_ssb] = ssb_idx;
ro_p->nb_mapped_ssb++;
ssb_list->tx_ssb[ssb_idx].mapped_ro[ssb_list->tx_ssb[ssb_idx].nb_mapped_ro] = ro_p;
ssb_list->tx_ssb[ssb_idx].nb_mapped_ro++;
AssertFatal(MAX_NB_RO_PER_SSB_IN_ASSOCIATION_PATTERN > ssb_list->tx_ssb[ssb_idx].nb_mapped_ro,
"Too many mapped ROs (%d) to a single SSB\n",
ssb_list->tx_ssb[ssb_idx].nb_mapped_ro);
LOG_D(NR_MAC, "Mapped ssb_idx %u to RO slot-symbol %u-%u, %u-%u-%u/%u\n",
ssb_idx, ro_p->slot, ro_p->start_symbol, slot, ro_in_time, ro_in_freq,
prach_conf_period_p->prach_occasion_slot_map[frame][slot].nb_of_prach_occasion_in_freq);
LOG_D(NR_MAC, "Nb mapped ROs for this ssb idx: in the association period only %u\n",
ssb_list->tx_ssb[ssb_idx].nb_mapped_ro);
// If all the required SSBs are mapped to this RO, exit the loop of SSBs
if (ro_p->nb_mapped_ssb == ssb_rach_ratio) {
ro_p->mapped_ssb_idx[ro_p->nb_mapped_ssb] = ssb_idx;
ro_p->nb_mapped_ssb++;
AssertFatal(MAX_NB_RO_PER_SSB_IN_ASSOCIATION_PATTERN > tx_ssb->nb_mapped_ro + 1,
"Too many mapped ROs (%d) to a single SSB\n",
tx_ssb->nb_mapped_ro);
tx_ssb->mapped_ro[tx_ssb->nb_mapped_ro] = ro_p;
tx_ssb->nb_mapped_ro++;
LOG_D(NR_MAC,
"Mapped ssb_idx %u to RO slot-symbol %u-%u, %u-%u-%u/%u\n"
"Nb mapped ROs for this ssb idx: in the association period only %u\n",
ssb_idx,
ro_p->slot,
ro_p->start_symbol,
slot,
ro_in_time,
ro_in_freq,
slot_map->nb_of_prach_occasion_in_freq,
tx_ssb->nb_mapped_ro);
// If all the required SSBs are mapped to this RO, exit the loop of SSBs
if (ro_p->nb_mapped_ssb == ssb_rach_ratio) {
ssb_idx++;
break;
}
} // if ssb_idx is transmitted
} // for ssb_idx
// Exit the loop of ROs if there is no more SSB to map
if (MAX_NB_SSB == ssb_idx) break;
} // for ro_in_freq
// Exit the loop of ROs if there is no more SSB to map
if (MAX_NB_SSB == ssb_idx) break;
} // for ro_in_time
// Exit the loop of slots if there is no more SSB to map
if (MAX_NB_SSB == ssb_idx) break;
} // for slot
// Exit the loop frames if there is no more SSB to map
if (MAX_NB_SSB == ssb_idx) break;
} // for frame
// Exit the loop of PRACH configurations if there is no more SSB to map
if (MAX_NB_SSB == ssb_idx) break;
} // for n_prach_conf
// WIP: note that there is no re-mapping of the SSBs within the association period since there is no invalid ROs in the PRACH config periods that would create this situation
} // if multiple_ssbs_per_ro
else {
// --------------------
// --------------------
// Multiple ROs per SSB
// --------------------
// --------------------
}
done = MAX_NB_SSB == ssb_idx;
}
}
}
}
}
}
} else {
prach_association_period_t *end = prach_assoc_pattern->prach_association_period_list + prach_assoc_pattern->nb_of_assoc_period;
for (prach_association_period_t *prach_period = prach_assoc_pattern->prach_association_period_list; prach_period < end;
prach_period++) {
// Go through the list of transmitted SSBs
for (ssb_idx=0; ssb_idx<MAX_NB_SSB; ssb_idx++) {
for (int ssb_idx = 0; ssb_idx < ssb_list->nb_tx_ssb; ssb_idx++) {
ssb_info_t *tx_ssb = ssb_list->tx_ssb + ssb_idx;
uint8_t nb_mapped_ro_in_association_period=0; // Reset the nb of mapped ROs for the new SSB index
LOG_D(NR_MAC,"Checking ssb_idx %d => %d\n",
ssb_idx, ssb_list->tx_ssb[ssb_idx].transmitted);
bool done = false;
// Map all the required ROs to this SSB
// Go through the list of PRACH config periods within this association period
for (int i = 0; i < prach_period->nb_of_prach_conf_period && !done; i++, prach_configuration_period_idx++) {
// Build the association period with its association PRACH Configuration indexes
prach_period->prach_conf_period_list[i] = &prach_assoc_pattern->prach_conf_period_list[prach_configuration_period_idx];
prach_conf_period_t *prach_conf = prach_period->prach_conf_period_list[i];
for (int frame = 0; frame < prach_conf->nb_of_frame && !done; frame++) {
for (int slot = 0; slot < prach_conf->nb_of_slot && !done; slot++) {
prach_occasion_slot_t *slot_map = &prach_conf->prach_occasion_slot_map[frame][slot];
for (int ro_in_time = 0; ro_in_time < slot_map->nb_of_prach_occasion_in_time && !done; ro_in_time++) {
for (int ro_in_freq = 0; ro_in_freq < slot_map->nb_of_prach_occasion_in_freq && !done; ro_in_freq++) {
prach_occasion_info_t *ro_p =
slot_map->prach_occasion + ro_in_time * slot_map->nb_of_prach_occasion_in_freq + ro_in_freq;
ro_p->mapped_ssb_idx[0] = ssb_idx;
ro_p->nb_mapped_ssb = 1;
AssertFatal(MAX_NB_RO_PER_SSB_IN_ASSOCIATION_PATTERN > tx_ssb->nb_mapped_ro + 1,
"Too many mapped ROs (%d) to a single SSB\n",
tx_ssb->nb_mapped_ro);
tx_ssb->mapped_ro[tx_ssb->nb_mapped_ro] = ro_p;
tx_ssb->nb_mapped_ro++;
nb_mapped_ro_in_association_period++;
done = nb_mapped_ro_in_association_period == ssb_rach_ratio;
// Map only the transmitted ssb_idx
if (true == ssb_list->tx_ssb[ssb_idx].transmitted) {
// Map all the required ROs to this SSB
// Go through the list of PRACH config periods within this association period
for (int n_prach_conf = 0; n_prach_conf<prach_assoc_pattern->prach_association_period_list[association_period_idx].nb_of_prach_conf_period; n_prach_conf++, prach_configuration_period_idx++) {
// Build the association period with its association PRACH Configuration indexes
prach_conf_period_p = &prach_assoc_pattern->prach_conf_period_list[prach_configuration_period_idx];
prach_assoc_pattern->prach_association_period_list[association_period_idx].prach_conf_period_list[n_prach_conf] = prach_conf_period_p;
for (; frame<prach_conf_period_p->nb_of_frame; frame++) {
for (; slot<prach_conf_period_p->nb_of_slot; slot++) {
for (; ro_in_time<prach_conf_period_p->prach_occasion_slot_map[frame][slot].nb_of_prach_occasion_in_time; ro_in_time++) {
for (; ro_in_freq<prach_conf_period_p->prach_occasion_slot_map[frame][slot].nb_of_prach_occasion_in_freq; ro_in_freq++) {
prach_occasion_info_t *ro_p = &prach_conf_period_p->prach_occasion_slot_map[frame][slot].prach_occasion[ro_in_time][ro_in_freq];
ro_p->mapped_ssb_idx[0] = ssb_idx;
ro_p->nb_mapped_ssb = 1;
ssb_list->tx_ssb[ssb_idx].mapped_ro[ssb_list->tx_ssb[ssb_idx].nb_mapped_ro] = ro_p;
ssb_list->tx_ssb[ssb_idx].nb_mapped_ro++;
AssertFatal(MAX_NB_RO_PER_SSB_IN_ASSOCIATION_PATTERN > ssb_list->tx_ssb[ssb_idx].nb_mapped_ro,
"Too many mapped ROs (%d) to a single SSB\n",
ssb_list->tx_ssb[ssb_idx].nb_mapped_ro);
nb_mapped_ro_in_association_period++;
LOG_D(NR_MAC,"Mapped ssb_idx %u to RO slot-symbol %u-%u, %u-%u-%u/%u\n",
ssb_idx, ro_p->slot, ro_p->start_symbol, slot, ro_in_time, ro_in_freq,
prach_conf_period_p->prach_occasion_slot_map[frame][slot].nb_of_prach_occasion_in_freq);
LOG_D(NR_MAC, "Nb mapped ROs for this ssb idx: in the association period only %u / total %u\n",
ssb_list->tx_ssb[ssb_idx].nb_mapped_ro, nb_mapped_ro_in_association_period);
// Exit the loop if this SSB has been mapped to all the required ROs
// WIP: Assuming that ssb_rach_ratio equals the maximum nb of times a given ssb_idx is mapped within an association period:
// this is true if no PRACH occasions are conflicting with SSBs nor TDD_UL_DL_ConfigurationCommon schedule
if (nb_mapped_ro_in_association_period == ssb_rach_ratio) {
ro_in_freq++;
break;
}
} // for ro_in_freq
LOG_D(NR_MAC,
"Mapped ssb_idx %u to RO slot-symbol %u-%u, %u-%u-%u/%u\n"
"Nb mapped ROs for this ssb idx: in the association period only %u / total %u\n",
ssb_idx,
ro_p->slot,
ro_p->start_symbol,
slot,
ro_in_time,
ro_in_freq,
slot_map->nb_of_prach_occasion_in_freq,
tx_ssb->nb_mapped_ro,
nb_mapped_ro_in_association_period);
// Exit the loop if this SSB has been mapped to all the required ROs
if (nb_mapped_ro_in_association_period == ssb_rach_ratio) {
break;
}
else ro_in_freq = 0; // else go to the next time symbol in that slot and reset the freq index
} // for ro_in_time
// Exit the loop if this SSB has been mapped to all the required ROs
if (nb_mapped_ro_in_association_period == ssb_rach_ratio) {
break;
// WIP: Assuming that ssb_rach_ratio equals the maximum nb of times a given ssb_idx is mapped within an
// association period:
// this is true if no PRACH occasions are conflicting with SSBs nor TDD_UL_DL_ConfigurationCommon schedule
}
else ro_in_time = 0; // else go to the next slot in that PRACH config period and reset the symbol index
} // for slot
// Exit the loop if this SSB has been mapped to all the required ROs
if (nb_mapped_ro_in_association_period == ssb_rach_ratio) {
break;
}
else slot = 0; // else go to the next frame in that PRACH config period and reset the slot index
} // for frame
// Exit the loop if this SSB has been mapped to all the required ROs
if (nb_mapped_ro_in_association_period == ssb_rach_ratio) {
break;
}
else frame = 0; // else go to the next PRACH config period in that association period and reset the frame index
} // for n_prach_conf
} // if ssb_idx is transmitted
} // for ssb_idx
} // else if multiple_ssbs_per_ro
} // for association_period_index
}
}
}
}
}
}
// Returns a RACH occasion if any matches the SSB idx, the frame and the slot
@@ -2076,10 +1984,10 @@ static int get_nr_prach_info_from_ssb_index(prach_association_pattern_t *prach_a
for (int ro_in_time=0; ro_in_time < prach_occasion_slot_p->nb_of_prach_occasion_in_time; ro_in_time++) {
for (int ro_in_freq=0; ro_in_freq < prach_occasion_slot_p->nb_of_prach_occasion_in_freq; ro_in_freq++) {
prach_occasion_info_t *prach_occasion_info_p = &prach_occasion_slot_p->prach_occasion[ro_in_time][ro_in_freq];
for (uint8_t ssb_nb=0; ssb_nb<prach_occasion_info_p->nb_mapped_ssb; ssb_nb++) {
if (prach_occasion_info_p->mapped_ssb_idx[ssb_nb] == ssb_idx) {
prach_occasion_info_t *ro_p =
prach_occasion_slot_p->prach_occasion + ro_in_time * prach_occasion_slot_p->nb_of_prach_occasion_in_freq + ro_in_freq;
for (uint8_t ssb_nb = 0; ssb_nb < ro_p->nb_mapped_ssb; ssb_nb++) {
if (ro_p->mapped_ssb_idx[ssb_nb] == ssb_idx) {
nb_mapped_ssb++;
}
}
@@ -2095,12 +2003,12 @@ static int get_nr_prach_info_from_ssb_index(prach_association_pattern_t *prach_a
nb_mapped_ssb=0;
for (int ro_in_time=0; ro_in_time < prach_occasion_slot_p->nb_of_prach_occasion_in_time; ro_in_time++) {
for (int ro_in_freq=0; ro_in_freq < prach_occasion_slot_p->nb_of_prach_occasion_in_freq; ro_in_freq++) {
prach_occasion_info_t *prach_occasion_info_p = &prach_occasion_slot_p->prach_occasion[ro_in_time][ro_in_freq];
for (uint8_t ssb_nb=0; ssb_nb<prach_occasion_info_p->nb_mapped_ssb; ssb_nb++) {
if (prach_occasion_info_p->mapped_ssb_idx[ssb_nb] == ssb_idx) {
prach_occasion_info_t *ro_p =
prach_occasion_slot_p->prach_occasion + ro_in_time * prach_occasion_slot_p->nb_of_prach_occasion_in_freq + ro_in_freq;
for (uint8_t ssb_nb = 0; ssb_nb < ro_p->nb_mapped_ssb; ssb_nb++) {
if (ro_p->mapped_ssb_idx[ssb_nb] == ssb_idx) {
if (nb_mapped_ssb == random_ssb_nb) {
*prach_occasion_info_pp = prach_occasion_info_p;
*prach_occasion_info_pp = ro_p;
return 1;
}
else {