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function to verify if we can allocare RRC resources to UE with given ID

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This commit is contained in:
francescomani
2025-07-03 08:27:38 +02:00
committed by Robert Schmidt
parent 8932566d2b
commit f9cf458b1c
1 changed files with 49 additions and 6 deletions
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openair2/LAYER2/NR_MAC_gNB/nr_radio_config.c
+49 -6
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@@ -238,6 +238,7 @@ static int get_nb_pucch2_per_slot(const NR_ServingCellConfigCommon_t *scc, int b
int nb_pucch2 = (max_csi_reports / (available_report_occasions + 1)) + 1;
// in current implementation we need (nb_pucch2 * PUCCH2_SIZE) prbs for PUCCH2
// and MAX_MOBILES_PER_GNB prbs for PUCCH1
// checked for validity in verify_radio_configuration
AssertFatal((nb_pucch2 * PUCCH2_SIZE) + MAX_MOBILES_PER_GNB <= bwp_size,
"Cannot allocate all required PUCCH resources for max number of %d UEs in BWP with %d PRBs\n",
MAX_MOBILES_PER_GNB, bwp_size);
@@ -402,6 +403,7 @@ static void set_csirs_periodicity(NR_NZP_CSI_RS_Resource_t *nzpcsi0,
else {
nzpcsi0->periodicityAndOffset->present = NR_CSI_ResourcePeriodicityAndOffset_PR_slots320;
const int nb_dl_slots_period = get_full_dl_slots_per_period(fs); // full DL slots
// checked for validity in verify_radio_configuration
AssertFatal(offset / 320 < nb_dl_slots_period, "Cannot allocate CSI-RS for BWP %d. Not enough resources for CSI-RS\n", id);
nzpcsi0->periodicityAndOffset->choice.slots320 = (offset % 320) + (offset / 320);
}
@@ -661,7 +663,7 @@ static struct NR_SRS_Resource__resourceType__periodic *configure_periodic_srs(co
{
frame_structure_t *fs = &RC.nrmac[0]->frame_structure;
int offset = get_ul_slot_offset(fs, uid, false); // only full UL slots for SRS
// checked for validity in verify_radio_configuration
AssertFatal(offset < 2560, "Cannot allocate SRS configuration for uid %d, not enough resources\n", uid);
const int ideal_period = set_ideal_period(false);
@@ -1169,6 +1171,7 @@ static void config_pucch_resset0(NR_PUCCH_Config_t *pucch_Config,
NR_PUCCH_Resource_t *pucchres0 = calloc(1,sizeof(*pucchres0));
pucchres0->pucch_ResourceId = *pucchid;
pucchres0->startingPRB = (PUCCH2_SIZE * num_pucch2) + uid;
// checked for validity in verify_radio_configuration
AssertFatal(pucchres0->startingPRB < curr_bwp, "Not enough resources in current BWP (size %d) to allocate uid %d\n", curr_bwp, uid);
pucchres0->intraSlotFrequencyHopping = NULL;
pucchres0->secondHopPRB = NULL;
@@ -1745,13 +1748,11 @@ static void set_csi_meas_periodicity(const NR_ServingCellConfigCommon_t *scc,
const int ideal_period = set_ideal_period(true);
const int num_pucch2 = get_nb_pucch2_per_slot(scc, curr_bwp);
const int idx = (uid * 2 / num_pucch2) + is_rsrp;
frame_structure_t *fs = &RC.nrmac[0]->frame_structure;
int offset = get_ul_slot_offset(fs, idx, true);
LOG_D(NR_MAC, "set_csi_meas_periodicity: uid = %d, offset = %d, ideal_period = %d", uid, offset, ideal_period);
// checked for validity in verify_radio_configuration
AssertFatal(offset < 320, "Not enough UL slots to accomodate all possible UEs. Need to rework the implementation\n");
if (check_periodicity(4, ideal_period, fs)) {
csirep->reportConfigType.choice.periodic->reportSlotConfig.present = NR_CSI_ReportPeriodicityAndOffset_PR_slots4;
csirep->reportConfigType.choice.periodic->reportSlotConfig.choice.slots4 = offset;
@@ -3492,16 +3493,58 @@ NR_RLC_BearerConfig_t *get_DRB_RLC_BearerConfig(long lcChannelId,
return rlc_BearerConfig;
}
static bool verify_radio_configuration(int uid, const NR_ServingCellConfigCommon_t *scc, const NR_ServingCellConfig_t *scd)
{
frame_structure_t *fs = &RC.nrmac[0]->frame_structure;
int srs_offset = get_ul_slot_offset(fs, uid, false);
// see configure_periodic_srs
if (srs_offset >= 2560) {
LOG_E(NR_RRC, "UID %d, cannot allocate resources for SRS, rejecting UE\n", uid);
return false;
}
int n_dl_bwp = scd->downlinkBWP_ToAddModList ? scd->downlinkBWP_ToAddModList->list.count : 1;
int csi_offset = fs->numb_slots_period * n_dl_bwp;
// see set_csirs_periodicity
if (csi_offset / 320 >= get_full_dl_slots_per_period(fs)) {
LOG_E(NR_RRC, "UID %d, cannot allocate resources for CSI-RS, rejecting UE\n", uid);
return false; // cannot allocate resources for CSI-RS
}
int curr_bwp = NRRIV2BW(scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
int num_pucch2 = get_nb_pucch2_per_slot(scc, curr_bwp);
int pucchres0_startingPRB = (PUCCH2_SIZE * num_pucch2) + uid;
// see config_pucch_resset0
if (pucchres0_startingPRB >= curr_bwp) {
LOG_E(NR_RRC, "UID %d, cannot allocate resources for PUCCH0, rejecting UE\n", uid);
return false; // cannot allocate resources for PUCCH0
}
// see get_nb_pucch2_per_slot
if ((num_pucch2 * PUCCH2_SIZE) + MAX_MOBILES_PER_GNB > curr_bwp) {
LOG_E(NR_RRC, "UID %d, cannot allocate resources for PUCCH2, rejecting UE\n", uid);
return false; // cannot allocate resources for PUCCH2
}
const int idx = (uid * 2 / num_pucch2) + 1;
int offset = get_ul_slot_offset(fs, idx, true);
// see set_csi_meas_periodicity
if (offset >= 320) {
LOG_E(NR_RRC, "UID %d, cannot allocate resources for CSI reporting, rejecting UE\n", uid);
return false; // cannot allocate resources for CSI report
}
return true;
}
NR_CellGroupConfig_t *get_initial_cellGroupConfig(int uid,
const NR_ServingCellConfigCommon_t *scc,
const NR_ServingCellConfig_t *servingcellconfigdedicated,
const nr_mac_config_t *configuration,
const nr_rlc_configuration_t *default_rlc_config)
{
NR_SpCellConfig_t *spCellConfig = get_initial_SpCellConfig(uid, scc, servingcellconfigdedicated, configuration);
if (!spCellConfig)
if (!verify_radio_configuration(uid, scc, servingcellconfigdedicated))
return NULL;
NR_SpCellConfig_t *spCellConfig = get_initial_SpCellConfig(uid, scc, servingcellconfigdedicated, configuration);
NR_CellGroupConfig_t *cellGroupConfig = calloc(1, sizeof(*cellGroupConfig));
cellGroupConfig->cellGroupId = 0;