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function to compute nr of prbs for pucch

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This commit is contained in:
Francesco Mani
2020-09-28 10:35:37 +02:00
parent b69920b9f6
commit 0b1f0f8693
4 changed files with 125 additions and 23 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c
+9 -9
View File
@@ -318,9 +318,8 @@ void nr_schedule_pucch(int Mod_idP,
frame_t frameP,
sub_frame_t slotP) {
uint16_t O_uci;
uint16_t O_ack;
uint8_t SR_flag = 0; // no SR in PUCCH implemented for now
uint16_t O_csi, O_ack, O_uci;
uint8_t O_sr = 0; // no SR in PUCCH implemented for now
NR_ServingCellConfigCommon_t *scc = RC.nrmac[Mod_idP]->common_channels->ServingCellConfigCommon;
NR_UE_list_t *UE_list = &RC.nrmac[Mod_idP]->UE_list;
AssertFatal(UE_list->active[UE_id] >=0,"Cannot find UE_id %d is not active\n",UE_id);
@@ -336,8 +335,9 @@ void nr_schedule_pucch(int Mod_idP,
for (int l=0; l<2; l++) {
curr_pucch = &UE_list->UE_sched_ctrl[UE_id].sched_pucch[k][l];
O_ack = curr_pucch->dai_c;
O_uci = O_ack + curr_pucch->csi_bits; // for now we are just sending acknacks in pucch
if ((O_uci>0 || SR_flag==1) && (frameP == curr_pucch->frame) && (slotP == curr_pucch->ul_slot)) {
O_csi = curr_pucch->csi_bits;
O_uci = O_ack + O_csi + O_sr;
if ((O_uci>0) && (frameP == curr_pucch->frame) && (slotP == curr_pucch->ul_slot)) {
UL_tti_req->SFN = curr_pucch->frame;
UL_tti_req->Slot = curr_pucch->ul_slot;
UL_tti_req->pdus_list[UL_tti_req->n_pdus].pdu_type = NFAPI_NR_UL_CONFIG_PUCCH_PDU_TYPE;
@@ -346,17 +346,17 @@ void nr_schedule_pucch(int Mod_idP,
memset(pucch_pdu,0,sizeof(nfapi_nr_pucch_pdu_t));
UL_tti_req->n_pdus+=1;
LOG_I(MAC,"Scheduling pucch reception for frame %d slot %d with SR flag %d and (%d, %d) (ACK, CSI) bits\n",
frameP,slotP,SR_flag,O_ack,curr_pucch->csi_bits);
LOG_I(MAC,"Scheduling pucch reception for frame %d slot %d with %d SR bits and (%d, %d) (ACK, CSI) bits\n",
frameP,slotP,O_sr,O_ack,curr_pucch->csi_bits);
nr_configure_pucch(pucch_pdu,
scc,
ubwp,
UE_list->rnti[UE_id],
curr_pucch->resource_indicator,
O_uci,
O_csi,
O_ack,
SR_flag);
O_sr);
memset((void *) &UE_list->UE_sched_ctrl[UE_id].sched_pucch[k][l],
0,
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c
+102 -9
View File
@@ -545,9 +545,9 @@ void nr_configure_pucch(nfapi_nr_pucch_pdu_t* pucch_pdu,
NR_BWP_Uplink_t *bwp,
uint16_t rnti,
uint8_t pucch_resource,
uint16_t O_uci,
uint16_t O_csi,
uint16_t O_ack,
uint8_t SR_flag) {
uint8_t O_sr) {
NR_PUCCH_Config_t *pucch_Config;
NR_PUCCH_Resource_t *pucchres;
@@ -562,6 +562,8 @@ void nr_configure_pucch(nfapi_nr_pucch_pdu_t* pucch_pdu,
pucch_pdu->bit_len_harq = O_ack;
uint16_t O_uci = O_csi + O_ack;
if (bwp) { // This is not the InitialBWP
NR_PUSCH_Config_t *pusch_Config = bwp->bwp_Dedicated->pusch_Config->choice.setup;
@@ -661,7 +663,7 @@ void nr_configure_pucch(nfapi_nr_pucch_pdu_t* pucch_pdu,
pucch_pdu->initial_cyclic_shift = pucchres->format.choice.format0->initialCyclicShift;
pucch_pdu->nr_of_symbols = pucchres->format.choice.format0->nrofSymbols;
pucch_pdu->start_symbol_index = pucchres->format.choice.format0->startingSymbolIndex;
pucch_pdu->sr_flag = SR_flag;
pucch_pdu->sr_flag = O_sr;
break;
case NR_PUCCH_Resource__format_PR_format1 :
pucch_pdu->format_type = 1;
@@ -669,22 +671,23 @@ void nr_configure_pucch(nfapi_nr_pucch_pdu_t* pucch_pdu,
pucch_pdu->nr_of_symbols = pucchres->format.choice.format1->nrofSymbols;
pucch_pdu->start_symbol_index = pucchres->format.choice.format1->startingSymbolIndex;
pucch_pdu->time_domain_occ_idx = pucchres->format.choice.format1->timeDomainOCC;
pucch_pdu->sr_flag = SR_flag;
pucch_pdu->sr_flag = O_sr;
break;
case NR_PUCCH_Resource__format_PR_format2 :
pucch_pdu->format_type = 2;
pucch_pdu->nr_of_symbols = pucchres->format.choice.format2->nrofSymbols;
pucch_pdu->start_symbol_index = pucchres->format.choice.format2->startingSymbolIndex;
pucch_pdu->prb_size = pucchres->format.choice.format2->nrofPRBs;
pucch_pdu->data_scrambling_id = pusch_id!= NULL ? *pusch_id : *scc->physCellId;
pucch_pdu->dmrs_scrambling_id = id0!= NULL ? *id0 : *scc->physCellId;
pucch_pdu->bit_len_csi_part1 = O_uci-O_ack;
pucch_pdu->prb_size = compute_pucch_prb_size(2,pucchres->format.choice.format2->nrofPRBs,
O_uci+O_sr,O_csi,pucch_Config->format2->choice.setup->maxCodeRate,
2,pucchres->format.choice.format2->nrofSymbols,8);
pucch_pdu->bit_len_csi_part1 = O_csi;
break;
case NR_PUCCH_Resource__format_PR_format3 :
pucch_pdu->format_type = 3;
pucch_pdu->nr_of_symbols = pucchres->format.choice.format3->nrofSymbols;
pucch_pdu->start_symbol_index = pucchres->format.choice.format3->startingSymbolIndex;
pucch_pdu->prb_size = pucchres->format.choice.format3->nrofPRBs;
pucch_pdu->data_scrambling_id = pusch_id!= NULL ? *pusch_id : *scc->physCellId;
if (pucch_Config->format3 == NULL) {
pucch_pdu->pi_2bpsk = 0;
@@ -695,7 +698,19 @@ void nr_configure_pucch(nfapi_nr_pucch_pdu_t* pucch_pdu,
pucch_pdu->pi_2bpsk = pucchfmt->pi2BPSK!= NULL ? 1 : 0;
pucch_pdu->add_dmrs_flag = pucchfmt->additionalDMRS!= NULL ? 1 : 0;
}
pucch_pdu->bit_len_csi_part1 = O_uci-O_ack;
int f3_dmrs_symbols;
if (pucchres->format.choice.format3->nrofSymbols==4)
f3_dmrs_symbols = 1<<pucch_pdu->freq_hop_flag;
else {
if(pucchres->format.choice.format3->nrofSymbols<10)
f3_dmrs_symbols = 2;
else
f3_dmrs_symbols = 2<<pucch_pdu->add_dmrs_flag;
}
pucch_pdu->prb_size = compute_pucch_prb_size(3,pucchres->format.choice.format3->nrofPRBs,
O_uci+O_sr,O_csi,pucch_Config->format3->choice.setup->maxCodeRate,
2-pucch_pdu->pi_2bpsk,pucchres->format.choice.format3->nrofSymbols-f3_dmrs_symbols,12);
pucch_pdu->bit_len_csi_part1 = O_csi;
break;
case NR_PUCCH_Resource__format_PR_format4 :
pucch_pdu->format_type = 4;
@@ -713,7 +728,7 @@ void nr_configure_pucch(nfapi_nr_pucch_pdu_t* pucch_pdu,
pucch_pdu->pi_2bpsk = pucchfmt->pi2BPSK!= NULL ? 1 : 0;
pucch_pdu->add_dmrs_flag = pucchfmt->additionalDMRS!= NULL ? 1 : 0;
}
pucch_pdu->bit_len_csi_part1 = O_uci-O_ack;
pucch_pdu->bit_len_csi_part1 = O_csi;
break;
default :
AssertFatal(1==0,"Undefined PUCCH format \n");
@@ -729,6 +744,84 @@ void nr_configure_pucch(nfapi_nr_pucch_pdu_t* pucch_pdu,
}
uint16_t compute_pucch_prb_size(uint8_t format,
uint8_t nr_prbs,
uint16_t O_tot,
uint16_t O_csi,
NR_PUCCH_MaxCodeRate_t *maxCodeRate,
uint8_t Qm,
uint8_t n_symb,
uint8_t n_re_ctrl) {
uint16_t O_crc;
if (O_tot<12)
O_crc = 0;
else{
if (O_tot<20)
O_crc = 6;
else {
if (O_tot<360)
O_crc = 11;
else
AssertFatal(1==0,"Case for segmented PUCCH not yet implemented");
}
}
int rtimes100;
switch(*maxCodeRate){
case NR_PUCCH_MaxCodeRate_zeroDot08 :
rtimes100 = 8;
break;
case NR_PUCCH_MaxCodeRate_zeroDot15 :
rtimes100 = 15;
break;
case NR_PUCCH_MaxCodeRate_zeroDot25 :
rtimes100 = 25;
break;
case NR_PUCCH_MaxCodeRate_zeroDot35 :
rtimes100 = 35;
break;
case NR_PUCCH_MaxCodeRate_zeroDot45 :
rtimes100 = 45;
break;
case NR_PUCCH_MaxCodeRate_zeroDot60 :
rtimes100 = 60;
break;
case NR_PUCCH_MaxCodeRate_zeroDot80 :
rtimes100 = 80;
break;
default :
AssertFatal(1==0,"Invalid MaxCodeRate");
}
float r = (float)rtimes100/100;
if (O_csi == O_tot) {
if ((O_tot+O_csi)>(nr_prbs*n_re_ctrl*n_symb*Qm*r))
AssertFatal(1==0,"MaxCodeRate %.2f can't support %d UCI bits and %d CRC bits with %d PRBs",
r,O_tot,O_crc,nr_prbs);
else
return nr_prbs;
}
if (format==2){
// TODO fix this for multiple CSI reports
for (int i=1; i<=nr_prbs; i++){
if((O_tot+O_crc)<=(i*n_symb*Qm*n_re_ctrl*r) &&
(O_tot+O_crc)>((i-1)*n_symb*Qm*n_re_ctrl*r))
return i;
}
AssertFatal(1==0,"MaxCodeRate %.2f can't support %d UCI bits and %d CRC bits with at most %d PRBs",
r,O_tot,O_crc,nr_prbs);
}
else{
AssertFatal(1==0,"Not yet implemented");
}
}
void prepare_dci(NR_CellGroupConfig_t *secondaryCellGroup,
dci_pdu_rel15_t *dci_pdu_rel15,
nr_dci_format_t format,
openair2/LAYER2/NR_MAC_gNB/mac_proto.h
+11 -2
View File
@@ -215,9 +215,9 @@ void nr_configure_pucch(nfapi_nr_pucch_pdu_t* pucch_pdu,
NR_BWP_Uplink_t *bwp,
uint16_t rnti,
uint8_t pucch_resource,
uint16_t O_uci,
uint16_t O_csi,
uint16_t O_ack,
uint8_t SR_flag);
uint8_t O_sr);
void find_search_space(int ss_type,
NR_BWP_Downlink_t *bwp,
@@ -286,6 +286,15 @@ int allocate_nr_CCEs(gNB_MAC_INST *nr_mac,
int m
);
uint16_t compute_pucch_prb_size(uint8_t format,
uint8_t nr_prbs,
uint16_t O_tot,
uint16_t O_csi,
NR_PUCCH_MaxCodeRate_t *maxCodeRate,
uint8_t Qm,
uint8_t n_symb,
uint8_t n_re_ctrl);
void update_csi_bitlen (NR_CSI_MeasConfig_t *csi_MeasConfig, NR_UE_list_t *UE_list, int UE_id);
int get_dlscs(nfapi_nr_config_request_t *cfg);
openair2/RRC/NR/rrc_gNB_reconfig.c
+3 -3
View File
@@ -911,7 +911,7 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
pucchres2->secondHopPRB=NULL;
pucchres2->format.present= NR_PUCCH_Resource__format_PR_format2;
pucchres2->format.choice.format2=calloc(1,sizeof(*pucchres2->format.choice.format2));
pucchres2->format.choice.format2->nrofPRBs=16;
pucchres2->format.choice.format2->nrofPRBs=4;
pucchres2->format.choice.format2->nrofSymbols=1;
pucchres2->format.choice.format2->startingSymbolIndex=13;
ASN_SEQUENCE_ADD(&pucch_Config->resourceToAddModList->list,pucchres2);
@@ -922,7 +922,7 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
pucchres3->secondHopPRB=NULL;
pucchres3->format.present= NR_PUCCH_Resource__format_PR_format2;
pucchres3->format.choice.format2=calloc(1,sizeof(*pucchres3->format.choice.format2));
pucchres3->format.choice.format2->nrofPRBs=16;
pucchres3->format.choice.format2->nrofPRBs=4;
pucchres3->format.choice.format2->nrofSymbols=1;
pucchres3->format.choice.format2->startingSymbolIndex=12;
ASN_SEQUENCE_ADD(&pucch_Config->resourceToAddModList->list,pucchres3);
@@ -934,7 +934,7 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
pucchfmt2->interslotFrequencyHopping=NULL;
pucchfmt2->additionalDMRS=NULL;
pucchfmt2->maxCodeRate=calloc(1,sizeof(*pucchfmt2->maxCodeRate));
*pucchfmt2->maxCodeRate=NR_PUCCH_MaxCodeRate_zeroDot15;
*pucchfmt2->maxCodeRate=NR_PUCCH_MaxCodeRate_zeroDot25;
pucchfmt2->nrofSlots=NULL;
pucchfmt2->pi2BPSK=NULL;
pucchfmt2->simultaneousHARQ_ACK_CSI=NULL;