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fix for ssb offset scaling issue

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This commit is contained in:
francescomani
2022-05-02 19:08:10 +02:00
parent 3ec401f2f6
commit 299642344a
7 changed files with 33 additions and 14 deletions
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openair1/PHY/INIT/nr_parms.c
+4 -2
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@@ -366,8 +366,10 @@ int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *fp,
uint8_t sco = 0;
if (((fp->freq_range == nr_FR1) && (config->ssb_table.ssb_subcarrier_offset<24)) ||
((fp->freq_range == nr_FR2) && (config->ssb_table.ssb_subcarrier_offset<12)) )
sco = config->ssb_table.ssb_subcarrier_offset;
((fp->freq_range == nr_FR2) && (config->ssb_table.ssb_subcarrier_offset<12)) ) {
if (fp->freq_range == nr_FR1)
sco = config->ssb_table.ssb_subcarrier_offset>>config->ssb_config.scs_common;
}
fp->ssb_start_subcarrier = (12 * config->ssb_table.ssb_offset_point_a + sco);
set_Lmax(fp);
openair1/SCHED_NR/phy_procedures_nr_gNB.c
+4 -2
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@@ -54,8 +54,10 @@ void nr_set_ssb_first_subcarrier(nfapi_nr_config_request_scf_t *cfg, NR_DL_FRAME
uint8_t sco = 0;
if (((fp->freq_range == nr_FR1) && (cfg->ssb_table.ssb_subcarrier_offset.value<24)) ||
((fp->freq_range == nr_FR2) && (cfg->ssb_table.ssb_subcarrier_offset.value<12)) )
sco = cfg->ssb_table.ssb_subcarrier_offset.value;
((fp->freq_range == nr_FR2) && (cfg->ssb_table.ssb_subcarrier_offset.value<12)) ) {
if (fp->freq_range == nr_FR1)
sco = cfg->ssb_table.ssb_subcarrier_offset.value>>cfg->ssb_config.scs_common.value;
}
fp->ssb_start_subcarrier = (12 * cfg->ssb_table.ssb_offset_point_a.value + sco);
LOG_D(PHY, "SSB first subcarrier %d (%d,%d)\n", fp->ssb_start_subcarrier,cfg->ssb_table.ssb_offset_point_a.value,sco);
openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
+6 -1
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@@ -354,13 +354,18 @@ int8_t nr_ue_decode_mib(module_id_t module_id,
scs_ssb = get_softmodem_params()->numerology;
band = mac->nr_band;
ssb_start_symbol = get_ssb_start_symbol(band,scs_ssb,ssb_index);
int ssb_sc_offset_norm;
if (ssb_subcarrier_offset<24 && mac->frequency_range == FR1)
ssb_sc_offset_norm = ssb_subcarrier_offset>>scs_ssb;
else
ssb_sc_offset_norm = ssb_subcarrier_offset;
if (mac->common_configuration_complete == 0)
nr_ue_sib1_scheduler(module_id,
cc_id,
ssb_start_symbol,
frame,
ssb_subcarrier_offset,
ssb_sc_offset_norm,
ssb_index,
ssb_start_subcarrier,
mac->frequency_range,
openair2/LAYER2/NR_MAC_gNB/config.c
+8 -5
View File
@@ -344,21 +344,24 @@ void config_common(int Mod_idP, int ssb_SubcarrierOffset, rrc_pdsch_AntennaPorts
uint32_t absolute_diff = (*scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB - scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA);
uint16_t sco = absolute_diff%(12*scs_scaling);
// values of subcarrier offset larger than the limit only indicates CORESET for Type0-PDCCH CSS set is not present
uint8_t ssb_SubcarrierOffset_limit = 0;
int ssb_SubcarrierOffset_limit = 0;
int offset_scaling = 0; //15kHz
if(frequency_range == FR1) {
ssb_SubcarrierOffset_limit = 24;
} else {
if (ssb_SubcarrierOffset<ssb_SubcarrierOffset_limit)
offset_scaling = cfg->ssb_config.scs_common.value;
} else
ssb_SubcarrierOffset_limit = 12;
}
if (ssb_SubcarrierOffset<ssb_SubcarrierOffset_limit)
AssertFatal(sco==(scs_scaling * (ssb_SubcarrierOffset>>(cfg->ssb_config.scs_common.value))),"absoluteFrequencySSB has a subcarrier offset of %d while it should be %d\n",sco/scs_scaling,ssb_SubcarrierOffset);
AssertFatal(sco==(scs_scaling * ssb_SubcarrierOffset),
"absoluteFrequencySSB has a subcarrier offset of %d while it should be %d\n",sco/scs_scaling,ssb_SubcarrierOffset);
cfg->ssb_table.ssb_offset_point_a.value = absolute_diff/(12*scs_scaling) - 10; //absoluteFrequencySSB is the central frequency of SSB which is made by 20RBs in total
cfg->ssb_table.ssb_offset_point_a.tl.tag = NFAPI_NR_CONFIG_SSB_OFFSET_POINT_A_TAG;
cfg->num_tlv++;
cfg->ssb_table.ssb_period.value = *scc->ssb_periodicityServingCell;
cfg->ssb_table.ssb_period.tl.tag = NFAPI_NR_CONFIG_SSB_PERIOD_TAG;
cfg->num_tlv++;
cfg->ssb_table.ssb_subcarrier_offset.value = ssb_SubcarrierOffset>>(cfg->ssb_config.scs_common.value);
cfg->ssb_table.ssb_subcarrier_offset.value = ssb_SubcarrierOffset<<offset_scaling;
cfg->ssb_table.ssb_subcarrier_offset.tl.tag = NFAPI_NR_CONFIG_SSB_SUBCARRIER_OFFSET_TAG;
cfg->num_tlv++;
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c
+1 -1
View File
@@ -737,7 +737,7 @@ void nr_set_pusch_semi_static(const NR_SIB1_t *sib1,
void nr_configure_css_dci_initial(nfapi_nr_dl_tti_pdcch_pdu_rel15_t* pdcch_pdu,
nr_scs_e scs_common,
nr_scs_e pdcch_scs,
nr_frequency_range_e freq_range,
frequency_range_t freq_range,
uint8_t rmsi_pdcch_config,
uint8_t ssb_idx,
uint8_t k_ssb,
openair2/LAYER2/NR_MAC_gNB/mac_proto.h
+1 -1
View File
@@ -222,7 +222,7 @@ void get_pdsch_to_harq_feedback(int Mod_idP,
void nr_configure_css_dci_initial(nfapi_nr_dl_tti_pdcch_pdu_rel15_t* pdcch_pdu,
nr_scs_e scs_common,
nr_scs_e pdcch_scs,
nr_frequency_range_e freq_range,
frequency_range_t freq_range,
uint8_t rmsi_pdcch_config,
uint8_t ssb_idx,
uint8_t k_ssb,
openair2/RRC/NR/MESSAGES/asn1_msg.c
+9 -2
View File
@@ -222,7 +222,15 @@ uint8_t do_MIB_NR(gNB_RRC_INST *rrc,uint32_t frame) {
mib->message.choice.mib->spare.size = 1;
mib->message.choice.mib->spare.bits_unused = 7; // This makes a spare of 1 bits
mib->message.choice.mib->ssb_SubcarrierOffset = (configuration->ssb_SubcarrierOffset)&15;
AssertFatal(scc->ssbSubcarrierSpacing != NULL, "scc->ssbSubcarrierSpacing is null\n");
int band = *scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0];
frequency_range_t frequency_range = band<100?FR1:FR2;
int ssb_subcarrier_offset;
if(frequency_range == FR1)
ssb_subcarrier_offset = (configuration->ssb_SubcarrierOffset<24) ? (configuration->ssb_SubcarrierOffset<<*scc->ssbSubcarrierSpacing) : configuration->ssb_SubcarrierOffset;
else
ssb_subcarrier_offset = configuration->ssb_SubcarrierOffset;
mib->message.choice.mib->ssb_SubcarrierOffset = ssb_subcarrier_offset&15;
/*
* The SIB1 will be sent in this allocation (Type0-PDCCH) : 38.213, 13-4 Table and 38.213 13-11 to 13-14 tables
@@ -236,7 +244,6 @@ uint8_t do_MIB_NR(gNB_RRC_INST *rrc,uint32_t frame) {
mib->message.choice.mib->pdcch_ConfigSIB1.searchSpaceZero = *scc->downlinkConfigCommon->initialDownlinkBWP->pdcch_ConfigCommon->choice.setup->searchSpaceZero;
}
AssertFatal(scc->ssbSubcarrierSpacing != NULL, "scc->ssbSubcarrierSpacing is null\n");
switch (*scc->ssbSubcarrierSpacing) {
case NR_SubcarrierSpacing_kHz15:
mib->message.choice.mib->subCarrierSpacingCommon = NR_MIB__subCarrierSpacingCommon_scs15or60;