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correction in ssb beam association at mac

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This commit is contained in:
Francesco Mani
2020-12-15 11:30:13 +01:00
parent 9b6c7ba46d
commit 48ad90bc33
2 changed files with 38 additions and 28 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_bch.c
+38 -26
View File
@@ -54,7 +54,10 @@
#include "common/ran_context.h"
extern RAN_CONTEXT_t RC;
extern uint8_t SSB_Table[38];
uint8_t SSB_Slot[64]={0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,
10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,
20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,
30,30,31,31,32,32,33,33,34,34,35,35,36,36,37,37};
void schedule_nr_mib(module_id_t module_idP,
frame_t frameP,
@@ -72,16 +75,14 @@ void schedule_nr_mib(module_id_t module_idP,
int mib_sdu_length;
int CC_id;
uint8_t beam_index = 0;
// re-initializing the cumulative number of ssb transmitted
if (slotP==0)
gNB->cumul_ssb=0;
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
cc = &gNB->common_channels[CC_id];
const long band = *cc->ServingCellConfigCommon->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0];
const uint32_t ssb_offset0 = *cc->ServingCellConfigCommon->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB - cc->ServingCellConfigCommon->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA;
NR_ServingCellConfigCommon_t *scc = cc->ServingCellConfigCommon;
const long band = *scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0];
const uint32_t ssb_offset0 = *scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB - scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA;
int ratio;
switch (*cc->ServingCellConfigCommon->ssbSubcarrierSpacing) {
switch (*scc->ssbSubcarrierSpacing) {
case NR_SubcarrierSpacing_kHz15:
AssertFatal(band <= 79,
"Band %ld is not possible for SSB with 15 kHz SCS\n",
@@ -114,7 +115,7 @@ void schedule_nr_mib(module_id_t module_idP,
break;
default:
AssertFatal(1 == 0, "SCS %ld not allowed for SSB \n",
*cc->ServingCellConfigCommon->ssbSubcarrierSpacing);
*scc->ssbSubcarrierSpacing);
}
// scheduling MIB every 8 frames, PHY repeats it in between
@@ -143,16 +144,17 @@ void schedule_nr_mib(module_id_t module_idP,
dl_config_pdu->PDUType = NFAPI_NR_DL_TTI_SSB_PDU_TYPE;
dl_config_pdu->PDUSize =2 + sizeof(nfapi_nr_dl_tti_ssb_pdu_rel15_t);
AssertFatal(cc->ServingCellConfigCommon->physCellId!=NULL,"cc->ServingCellConfigCommon->physCellId is null\n");
dl_config_pdu->ssb_pdu.ssb_pdu_rel15.PhysCellId = *cc->ServingCellConfigCommon->physCellId;
AssertFatal(scc->physCellId!=NULL,"scc->physCellId is null\n");
dl_config_pdu->ssb_pdu.ssb_pdu_rel15.PhysCellId = *scc->physCellId;
dl_config_pdu->ssb_pdu.ssb_pdu_rel15.BetaPss = 0;
dl_config_pdu->ssb_pdu.ssb_pdu_rel15.SsbBlockIndex = 0;
AssertFatal(cc->ServingCellConfigCommon->downlinkConfigCommon!=NULL,"scc->downlinkConfigCommonL is null\n");
AssertFatal(cc->ServingCellConfigCommon->downlinkConfigCommon->frequencyInfoDL!=NULL,"scc->downlinkConfigCommon->frequencyInfoDL is null\n");
AssertFatal(cc->ServingCellConfigCommon->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB!=NULL,"scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB is null\n");
AssertFatal(cc->ServingCellConfigCommon->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.count==1,"Frequency Band list does not have 1 element (%d)\n",cc->ServingCellConfigCommon->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.count);
AssertFatal(cc->ServingCellConfigCommon->ssbSubcarrierSpacing,"ssbSubcarrierSpacing is null\n");
AssertFatal(cc->ServingCellConfigCommon->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0],"band is null\n");
AssertFatal(scc->downlinkConfigCommon!=NULL,"scc->downlinkConfigCommonL is null\n");
AssertFatal(scc->downlinkConfigCommon->frequencyInfoDL!=NULL,"scc->downlinkConfigCommon->frequencyInfoDL is null\n");
AssertFatal(scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB!=NULL,"scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB is null\n");
AssertFatal(scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.count==1,"Frequency Band list does not have 1 element (%d)\n",
scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.count);
AssertFatal(scc->ssbSubcarrierSpacing,"ssbSubcarrierSpacing is null\n");
AssertFatal(scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0],"band is null\n");
const nfapi_nr_config_request_scf_t *cfg = &RC.nrmac[module_idP]->config[0];
dl_config_pdu->ssb_pdu.ssb_pdu_rel15.SsbSubcarrierOffset = cfg->ssb_table.ssb_subcarrier_offset.value; //kSSB
@@ -170,14 +172,13 @@ void schedule_nr_mib(module_id_t module_idP,
// checking if there is any SSB in slot
const int abs_slot = (slots_per_frame * frameP) + slotP;
const int slot_per_period = (slots_per_frame>>1)<<(*cc->ServingCellConfigCommon->ssb_periodicityServingCell);
const int num_tdd_period = slotP/(slots_per_frame/nb_periods_per_frame);
const int slot_per_period = (slots_per_frame>>1)<<(*scc->ssb_periodicityServingCell);
int eff_120_slot;
const BIT_STRING_t *shortBitmap = &cc->ServingCellConfigCommon->ssb_PositionsInBurst->choice.shortBitmap;
const BIT_STRING_t *mediumBitmap = &cc->ServingCellConfigCommon->ssb_PositionsInBurst->choice.mediumBitmap;
const BIT_STRING_t *longBitmap = &cc->ServingCellConfigCommon->ssb_PositionsInBurst->choice.longBitmap;
const BIT_STRING_t *shortBitmap = &scc->ssb_PositionsInBurst->choice.shortBitmap;
const BIT_STRING_t *mediumBitmap = &scc->ssb_PositionsInBurst->choice.mediumBitmap;
const BIT_STRING_t *longBitmap = &scc->ssb_PositionsInBurst->choice.longBitmap;
uint8_t buf = 0;
switch (cc->ServingCellConfigCommon->ssb_PositionsInBurst->present) {
switch (scc->ssb_PositionsInBurst->present) {
case 1:
// presence of ssbs possible in the first 2 slots of ssb period
if ((abs_slot % slot_per_period) < 2 &&
@@ -191,7 +192,7 @@ void schedule_nr_mib(module_id_t module_idP,
fill_ssb_vrb_map(cc, (ssb_offset0 / (ratio * 12) - 10), CC_id);
break;
case 3:
AssertFatal(*cc->ServingCellConfigCommon->ssbSubcarrierSpacing ==
AssertFatal(*scc->ssbSubcarrierSpacing ==
NR_SubcarrierSpacing_kHz120,
"240kHZ subcarrier spacing currently not supported for SSBs\n");
if ((abs_slot % slot_per_period) < 8) {
@@ -221,14 +222,25 @@ void schedule_nr_mib(module_id_t module_idP,
}
if ((eff_120_slot>=0) && (((buf >> (6 - (eff_120_slot << 1))) & 3) != 0)) {
AssertFatal(((buf >> (6 - (eff_120_slot << 1))) & 3)<3,"We only support 1 ssb per slot max in FR2 for the moment\n");
gNB->tdd_beam_association[num_tdd_period] = gNB->cumul_ssb;
gNB->cumul_ssb++;
fill_ssb_vrb_map(cc, ssb_offset0 / (ratio * 12) - 10, CC_id);
}
break;
default:
AssertFatal(0,"SSB bitmap size value %d undefined (allowed values 1,2,3)\n",
cc->ServingCellConfigCommon->ssb_PositionsInBurst->present);
scc->ssb_PositionsInBurst->present);
}
// For FR2 beam ssb association at the beginning of every SSB period
if((scc->ssb_PositionsInBurst->present==3) && (abs_slot%slot_per_period == 0)){
uint8_t i_ssb,num_tdd_period;
uint8_t num_ssb = 0;
for (int i=0; i<64; i++){
i_ssb=((longBitmap->buf[i/8])>>(7-(i%8)))&1;
if(i_ssb==1){
num_tdd_period = SSB_Slot[i]/(slots_per_frame/nb_periods_per_frame);
gNB->tdd_beam_association[num_tdd_period]=num_ssb;
num_ssb++;
}
}
}
}
}
openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
-2
View File
@@ -549,8 +549,6 @@ typedef struct gNB_MAC_INST_s {
int cce_list[MAX_NUM_BWP][MAX_NUM_CORESET][MAX_NUM_CCE];
/// list of allocated beams per period
int16_t *tdd_beam_association;
/// cumulative number of ssb transmitted
uint8_t cumul_ssb;
/// DL preprocessor for differentiated scheduling
nr_pp_impl_dl pre_processor_dl;
/// UL preprocessor for differentiated scheduling