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Use PTRS params from RRC at MAC; remove hardcoding

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This commit is contained in:
Shweta Shrivastava
2021-01-08 11:19:29 -06:00
parent 61d3f3465a
commit 729182f57e
4 changed files with 103 additions and 32 deletions
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openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c
+69
View File
@@ -2918,3 +2918,72 @@ bool set_dl_ptrs_values(NR_PTRS_DownlinkConfig_t *ptrs_config,
//printf("[MAC] PTRS is set K= %u L= %u\n", *K_ptrs,1<<*L_ptrs);
return valid;
}
/* extract UL PTRS values from RRC and validate it based upon 38.214 6.2.3 */
bool set_ul_ptrs_values(NR_PTRS_UplinkConfig_t *ul_ptrs_config,
uint16_t rbSize,uint8_t mcsIndex, uint8_t mcsTable,
uint8_t *K_ptrs, uint8_t *L_ptrs,
uint8_t *reOffset, uint8_t *maxNumPorts, uint8_t *ulPower,
uint8_t NrOfSymbols)
{
bool valid = true;
/* as defined in T 38.214 6.2.3 */
if(rbSize < 3) {
valid = false;
return valid;
}
/* Check for Frequency Density values */
if(ul_ptrs_config->transformPrecoderDisabled->frequencyDensity->list.count < 2) {
/* Default value for K_PTRS = 2 as defined in T 38.214 6.2.3 */
*K_ptrs = 2;
}
else {
*K_ptrs = get_K_ptrs(*ul_ptrs_config->transformPrecoderDisabled->frequencyDensity->list.array[0],
*ul_ptrs_config->transformPrecoderDisabled->frequencyDensity->list.array[1],
rbSize);
}
/* Check for time Density values */
if(ul_ptrs_config->transformPrecoderDisabled->timeDensity->list.count < 3) {
*L_ptrs = 0;
}
else {
*L_ptrs = get_L_ptrs(*ul_ptrs_config->transformPrecoderDisabled->timeDensity->list.array[0],
*ul_ptrs_config->transformPrecoderDisabled->timeDensity->list.array[1],
*ul_ptrs_config->transformPrecoderDisabled->timeDensity->list.array[2],
mcsIndex,
mcsTable);
}
*reOffset = *ul_ptrs_config->transformPrecoderDisabled->resourceElementOffset;
*maxNumPorts = ul_ptrs_config->transformPrecoderDisabled->maxNrofPorts;
*ulPower = ul_ptrs_config->transformPrecoderDisabled->ptrs_Power;
/* If either or both of the parameters PT-RS time density (LPT-RS) and PT-RS frequency density (KPT-RS), shown in Table
* 6.2.3.1-1 and Table 6.2.3.1-2, indicates that 'PT-RS not present', the UE shall assume that PT-RS is not present
*/
if(*K_ptrs ==2 || *K_ptrs ==4 ) {
valid = true;
}
else {
valid = false;
return valid;
}
if(*L_ptrs ==0 || *L_ptrs ==1 || *L_ptrs ==2 ) {
valid = true;
}
else {
valid = false;
return valid;
}
/* PTRS is not present also :
* When the UE is receiving a PUSCH with allocation duration of 4 symbols and if LPT-RS is set to 4, the UE shall assume
* PT-RS is not transmitted
* When the UE is receiving a PUSCH with allocation duration of 2 symbols as defined in Clause 6.4.1.2.2 of [4, TS
* 38.211] and if LPT-RS is set to 2 or 4, the UE shall assume PT-RS is not transmitted.
*/
if((NrOfSymbols == 4 && *L_ptrs ==2) || ((NrOfSymbols == 2 && *L_ptrs > 0))) {
valid = false;
return valid;
}
return valid;
}
openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.h
+6
View File
@@ -185,4 +185,10 @@ bool set_dl_ptrs_values(NR_PTRS_DownlinkConfig_t *ptrs_config,
uint8_t *K_ptrs, uint8_t *L_ptrs,uint8_t *portIndex,
uint8_t *nERatio,uint8_t *reOffset,
uint8_t NrOfSymbols);
bool set_ul_ptrs_values(NR_PTRS_UplinkConfig_t *ul_ptrs_config,
uint16_t rbSize,uint8_t mcsIndex, uint8_t mcsTable,
uint8_t *K_ptrs, uint8_t *L_ptrs,
uint8_t *reOffset, uint8_t *maxNumPorts, uint8_t *ulPower,
uint8_t NrOfSymbols);
#endif
openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
+19 -21
View File
@@ -1537,31 +1537,18 @@ NR_UE_L2_STATE_t nr_ue_scheduler(nr_downlink_indication_t *dl_info, nr_uplink_in
// program PUSCH with UL DCI parameters
nr_scheduled_response_t scheduled_response;
fapi_nr_tx_request_t tx_req;
nfapi_nr_ue_ptrs_ports_t ptrs_ports_list;
for (int j = 0; j < ul_config_req->number_pdus; j++) {
fapi_nr_ul_config_request_pdu_t *ulcfg_pdu = &ul_config_req->ul_config_list[j];
if (ulcfg_pdu->pdu_type == FAPI_NR_UL_CONFIG_TYPE_PUSCH) {
// These should come from RRC config!!!
uint8_t ptrs_mcs1 = 2;
uint8_t ptrs_mcs2 = 4;
uint8_t ptrs_mcs3 = 10;
uint16_t n_rb0 = 25;
uint16_t n_rb1 = 75;
uint8_t ptrs_time_density = get_L_ptrs(ptrs_mcs1, ptrs_mcs2, ptrs_mcs3, ulcfg_pdu->pusch_config_pdu.mcs_index, ulcfg_pdu->pusch_config_pdu.mcs_table);
uint8_t ptrs_freq_density = get_K_ptrs(n_rb0, n_rb1, ulcfg_pdu->pusch_config_pdu.rb_size);
uint16_t l_prime_mask = get_l_prime(ulcfg_pdu->pusch_config_pdu.nr_of_symbols, typeB, pusch_dmrs_pos0, pusch_len1);
uint16_t ul_dmrs_symb_pos = l_prime_mask << ulcfg_pdu->pusch_config_pdu.start_symbol_index;
uint8_t dmrs_config_type = 0;
uint16_t number_dmrs_symbols = 0;
// PTRS ports configuration
// TbD: ptrs_dmrs_port and ptrs_port_index are not initialised!
ptrs_ports_list.ptrs_re_offset = 0;
// Num PRB Overhead from PUSCH-ServingCellConfig
if (mac->scg->spCellConfig->spCellConfigDedicated->uplinkConfig->pusch_ServingCellConfig->choice.setup->xOverhead == NULL)
N_PRB_oh = 0;
@@ -1573,13 +1560,8 @@ NR_UE_L2_STATE_t nr_ue_scheduler(nr_downlink_indication_t *dl_info, nr_uplink_in
ulcfg_pdu->pusch_config_pdu.num_dmrs_cdm_grps_no_data = 1;
ulcfg_pdu->pusch_config_pdu.nrOfLayers = 1;
ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator = 0;
ulcfg_pdu->pusch_config_pdu.pdu_bit_map = PUSCH_PDU_BITMAP_PUSCH_DATA;
ulcfg_pdu->pusch_config_pdu.pusch_ptrs.ptrs_time_density = ptrs_time_density;
ulcfg_pdu->pusch_config_pdu.pusch_ptrs.ptrs_freq_density = ptrs_freq_density;
ulcfg_pdu->pusch_config_pdu.pusch_ptrs.ptrs_ports_list = &ptrs_ports_list;
//ulcfg_pdu->pusch_config_pdu.target_code_rate = nr_get_code_rate_ul(ulcfg_pdu->pusch_config_pdu.mcs_index, ulcfg_pdu->pusch_config_pdu.mcs_table);
//ulcfg_pdu->pusch_config_pdu.qam_mod_order = nr_get_Qm_ul(ulcfg_pdu->pusch_config_pdu.mcs_index, ulcfg_pdu->pusch_config_pdu.mcs_table);
ulcfg_pdu->pusch_config_pdu.pdu_bit_map |= PUSCH_PDU_BITMAP_PUSCH_DATA;
if (1 << ulcfg_pdu->pusch_config_pdu.pusch_ptrs.ptrs_time_density >= ulcfg_pdu->pusch_config_pdu.nr_of_symbols) {
ulcfg_pdu->pusch_config_pdu.pdu_bit_map &= ~PUSCH_PDU_BITMAP_PUSCH_PTRS; // disable PUSCH PTRS
}
@@ -3624,6 +3606,22 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
// A value of "1" indicates UL-SCH shall be transmitted on the PUSCH and
// a value of "0" indicates UL-SCH shall not be transmitted on the PUSCH
if (mac->ULbwp[0]->bwp_Dedicated->pusch_Config->choice.setup->dmrs_UplinkForPUSCH_MappingTypeB->choice.setup->phaseTrackingRS != NULL) {
if (pusch_config_pdu_0_1->transform_precoding == transform_precoder_disabled) {
nfapi_nr_ue_ptrs_ports_t ptrs_ports_list;
pusch_config_pdu_0_1->pusch_ptrs.ptrs_ports_list = &ptrs_ports_list;
valid_ptrs_setup = set_ul_ptrs_values(mac->ULbwp[0]->bwp_Dedicated->pusch_Config->choice.setup->dmrs_UplinkForPUSCH_MappingTypeB->choice.setup->phaseTrackingRS->choice.setup,
pusch_config_pdu_0_1->rb_size, pusch_config_pdu_0_1->mcs_index, pusch_config_pdu_0_1->mcs_table,
&pusch_config_pdu_0_1->pusch_ptrs.ptrs_freq_density,&pusch_config_pdu_0_1->pusch_ptrs.ptrs_time_density,
&pusch_config_pdu_0_1->pusch_ptrs.ptrs_ports_list->ptrs_re_offset,&pusch_config_pdu_0_1->pusch_ptrs.num_ptrs_ports,
&pusch_config_pdu_0_1->pusch_ptrs.ul_ptrs_power, pusch_config_pdu_0_1->nr_of_symbols);
if(valid_ptrs_setup==true) {
pusch_config_pdu_0_1->pdu_bit_map |= PUSCH_PDU_BITMAP_PUSCH_PTRS;
}
//LOG_I(MAC, "UL PTRS values: PTRS time den: %d, PTRS freq den: %d\n", pusch_config_pdu_0_1->pusch_ptrs.ptrs_freq_density, pusch_config_pdu_0_1->pusch_ptrs.ptrs_time_density);
}
}
ul_config->slot = slot_tx;
ul_config->sfn = frame_tx;
ul_config->number_pdus = ul_config->number_pdus + 1;
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c
+9 -11
View File
@@ -486,6 +486,7 @@ void schedule_fapi_ul_pdu(int Mod_idP,
int bwp_id=1;
int mu = scc->uplinkConfigCommon->initialUplinkBWP->genericParameters.subcarrierSpacing;
int UE_id = 0;
bool valid_ptrs_setup = false;
NR_UE_info_t *UE_info = &RC.nrmac[Mod_idP]->UE_info;
AssertFatal(UE_info->active[UE_id],"Cannot find UE_id %d is not active\n",UE_id);
@@ -693,18 +694,15 @@ void schedule_fapi_ul_pdu(int Mod_idP,
// ------- PTRS -------
// --------------------
if (NR_DMRS_UplinkConfig->phaseTrackingRS != NULL) {
// TODO to be fixed from RRC config
uint8_t ptrs_mcs1 = 2; // higher layer parameter in PTRS-UplinkConfig
uint8_t ptrs_mcs2 = 4; // higher layer parameter in PTRS-UplinkConfig
uint8_t ptrs_mcs3 = 10; // higher layer parameter in PTRS-UplinkConfig
uint16_t n_rb0 = 25; // higher layer parameter in PTRS-UplinkConfig
uint16_t n_rb1 = 75; // higher layer parameter in PTRS-UplinkConfig
pusch_pdu->pusch_ptrs.ptrs_time_density = get_L_ptrs(ptrs_mcs1, ptrs_mcs2, ptrs_mcs3, pusch_pdu->mcs_index, pusch_pdu->mcs_table);
pusch_pdu->pusch_ptrs.ptrs_freq_density = get_K_ptrs(n_rb0, n_rb1, pusch_pdu->rb_size);
pusch_pdu->pusch_ptrs.ptrs_ports_list = (nfapi_nr_ptrs_ports_t *) malloc(2*sizeof(nfapi_nr_ptrs_ports_t));
pusch_pdu->pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset = 0;
pusch_pdu->pdu_bit_map |= PUSCH_PDU_BITMAP_PUSCH_PTRS; // enable PUSCH PTRS
valid_ptrs_setup = set_ul_ptrs_values(NR_DMRS_UplinkConfig->phaseTrackingRS->choice.setup,
pusch_pdu->rb_size, pusch_pdu->mcs_index, pusch_pdu->mcs_table,
&pusch_pdu->pusch_ptrs.ptrs_freq_density,&pusch_pdu->pusch_ptrs.ptrs_time_density,
&pusch_pdu->pusch_ptrs.ptrs_ports_list->ptrs_re_offset,&pusch_pdu->pusch_ptrs.num_ptrs_ports,
&pusch_pdu->pusch_ptrs.ul_ptrs_power, pusch_pdu->nr_of_symbols);
if(valid_ptrs_setup==true) {
pusch_pdu->pdu_bit_map |= PUSCH_PDU_BITMAP_PUSCH_PTRS; // enable PUSCH PTRS
}
}
else{
pusch_pdu->pdu_bit_map &= ~PUSCH_PDU_BITMAP_PUSCH_PTRS; // disable PUSCH PTRS