added PUSCH PTRS structs (UE + gNB) and parameters initialization

openair1/PHY/INIT/nr_init.c

@@ -85,6 +85,8 @@ int phy_init_nr_gNB(PHY_VARS_gNB *gNB,
   nfapi_nr_config_request_t *cfg    = &gNB->gNB_config;
   NR_gNB_COMMON *const common_vars  = &gNB->common_vars;
   NR_gNB_PUSCH **const pusch_vars   = gNB->pusch_vars;
+  dmrs_UplinkConfig_t *dmrs_Uplink_Config = &gNB->pusch_config.dmrs_UplinkConfig;
+  ptrs_UplinkConfig_t *ptrs_Uplink_Config = &gNB->pusch_config.dmrs_UplinkConfig.ptrs_UplinkConfig;
   /*LTE_eNB_SRS *const srs_vars       = gNB->srs_vars;
   LTE_eNB_PRACH *const prach_vars   = &gNB->prach_vars;*/
 
@@ -154,9 +156,9 @@ int phy_init_nr_gNB(PHY_VARS_gNB *gNB,
   }
 
   //------------- config PUSCH DMRS parameters(to be updated from RRC)--------------//
-  gNB->dmrs_UplinkConfig.pusch_dmrs_type = pusch_dmrs_type1;
-  gNB->dmrs_UplinkConfig.pusch_dmrs_AdditionalPosition = pusch_dmrs_pos0;
-  gNB->dmrs_UplinkConfig.pusch_maxLength = pusch_len1;
+  dmrs_Uplink_Config->pusch_dmrs_type = pusch_dmrs_type1;
+  dmrs_Uplink_Config->pusch_dmrs_AdditionalPosition = pusch_dmrs_pos0;
+  dmrs_Uplink_Config->pusch_maxLength = pusch_len1;
   //--------------------------------------------------------------------------------//
 
   nr_init_pdsch_dmrs(gNB, cfg->sch_config.physical_cell_id.value);
@@ -168,6 +170,17 @@ int phy_init_nr_gNB(PHY_VARS_gNB *gNB,
     gNB->pusch_config.pusch_TimeDomainResourceAllocation[i]->mappingType = typeB;
   }
 
+  gNB->ptrs_configured = 0;
+
+  //------------- config PUSCH PTRS parameters(to be updated from RRC)--------------//
+  ptrs_Uplink_Config->timeDensity.ptrs_mcs1 = 0; // setting MCS values to 0 indicate abscence of time_density field in the configuration
+  ptrs_Uplink_Config->timeDensity.ptrs_mcs2 = 0;
+  ptrs_Uplink_Config->timeDensity.ptrs_mcs3 = 0;
+  ptrs_Uplink_Config->frequencyDensity.n_rb0 = 0;     // setting N_RB values to 0 indicate abscence of frequency_density field in the configuration
+  ptrs_Uplink_Config->frequencyDensity.n_rb1 = 0;
+  ptrs_Uplink_Config->resourceElementOffset = 0;
+  //--------------------------------------------------------------------------------//
+
   /// Transport init necessary for NR synchro
   init_nr_transport(gNB);
 

openair1/PHY/INIT/nr_init_ue.c

@@ -659,6 +659,8 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
   abstraction_flag = 0;
   fp->nb_antennas_tx = 1;
   fp->nb_antennas_rx=1;
+  dmrs_UplinkConfig_t *dmrs_Uplink_Config = &ue->pusch_config.dmrs_UplinkConfig;
+  ptrs_UplinkConfig_t *ptrs_Uplink_Config = &ue->pusch_config.dmrs_UplinkConfig.ptrs_UplinkConfig;
   printf("Initializing UE vars (abstraction %"PRIu8") for eNB TXant %"PRIu8", UE RXant %"PRIu8"\n",abstraction_flag,fp->nb_antennas_tx,fp->nb_antennas_rx);
   //LOG_D(PHY,"[MSC_NEW][FRAME 00000][PHY_UE][MOD %02u][]\n", ue->Mod_id+NB_eNB_INST);
   nr_init_frame_parms_ue(fp,NR_MU_1,NORMAL,fp->N_RB_DL,n_ssb_crb,k_ssb);
@@ -711,9 +713,9 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
   }
 
   //------------- config DMRS parameters--------------//
-  ue->dmrs_UplinkConfig.pusch_dmrs_type = pusch_dmrs_type1;
-  ue->dmrs_UplinkConfig.pusch_dmrs_AdditionalPosition = pusch_dmrs_pos0;
-  ue->dmrs_UplinkConfig.pusch_maxLength = pusch_len1;
+  dmrs_Uplink_Config->pusch_dmrs_type = pusch_dmrs_type1;
+  dmrs_Uplink_Config->pusch_dmrs_AdditionalPosition = pusch_dmrs_pos0;
+  dmrs_Uplink_Config->pusch_maxLength = pusch_len1;
   //-------------------------------------------------//
   ue->dmrs_DownlinkConfig.pdsch_dmrs_type = pdsch_dmrs_type1;
   ue->dmrs_DownlinkConfig.pdsch_dmrs_AdditionalPosition = pdsch_dmrs_pos0;
@@ -743,6 +745,23 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
   ///////////
   ////////////////////////////////////////////////////////////////////////////////////////////
 
+  /////////////////////////PUSCH PTRS init/////////////////////////
+  ///////////
+
+  ue->ptrs_configured = 0; // flag to be toggled by RCC
+
+  //------------- config PTRS parameters--------------//
+  ptrs_Uplink_Config->timeDensity.ptrs_mcs1 = 0; // setting MCS values to 0 indicate abscence of time_density field in the configuration
+  ptrs_Uplink_Config->timeDensity.ptrs_mcs2 = 0;
+  ptrs_Uplink_Config->timeDensity.ptrs_mcs3 = 0;
+  ptrs_Uplink_Config->frequencyDensity.n_rb0 = 0;     // setting N_RB values to 0 indicate abscence of frequency_density field in the configuration
+  ptrs_Uplink_Config->frequencyDensity.n_rb1 = 0;
+  ptrs_Uplink_Config->resourceElementOffset = 0;
+  //-------------------------------------------------//
+
+  ///////////
+  ////////////////////////////////////////////////////////////////////////////////////////////
+
   for (i=0; i<10; i++)
     ue->tx_power_dBm[i]=-127;
 

openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c

@@ -117,7 +117,7 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
 
   //------------------generate DMRS------------------//
 
-  length_dmrs = gNB->dmrs_UplinkConfig.pusch_maxLength;
+  length_dmrs = dmrs_UplinkConfig->pusch_maxLength;
 
   nr_gold_pusch(gNB, symbol, n_idDMRS, length_dmrs);
 

openair1/PHY/NR_TRANSPORT/nr_dlsch_tools.c

@@ -338,7 +338,7 @@ void nr_fill_ulsch(PHY_VARS_gNB *gNB,
   rel15_ul->ulsch_pdu_rel15.number_rbs     = ulsch_pdu->rb_size;
   rel15_ul->ulsch_pdu_rel15.start_symbol   = ulsch_pdu->start_symbol_index;
   rel15_ul->ulsch_pdu_rel15.number_symbols = ulsch_pdu->nr_of_symbols;
-  rel15_ul->ulsch_pdu_rel15.length_dmrs    = gNB->dmrs_UplinkConfig.pusch_maxLength;
+  rel15_ul->ulsch_pdu_rel15.length_dmrs    = gNB->pusch_config.dmrs_UplinkConfig.pusch_maxLength;
   rel15_ul->ulsch_pdu_rel15.Qm             = ulsch_pdu->qam_mod_order;
   rel15_ul->ulsch_pdu_rel15.mcs            = ulsch_pdu->mcs_index;
   rel15_ul->ulsch_pdu_rel15.rv             = ulsch_pdu->pusch_data.rv_index;

openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c

@@ -1030,12 +1030,12 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
                                       0,
                                       0,
                                       rel15_ul->number_symbols,
-                                      &gNB->dmrs_UplinkConfig,
+                                      &gNB->pusch_config.dmrs_UplinkConfig,
                                       mapping_type,
                                       frame_parms->ofdm_symbol_size);
 
     if (dmrs_symbol_flag == 1){
-      nb_re_pusch = rel15_ul->number_rbs * ((gNB->dmrs_UplinkConfig.pusch_dmrs_type==pusch_dmrs_type1)?6:8);
+      nb_re_pusch = rel15_ul->number_rbs * ((gNB->pusch_config.dmrs_UplinkConfig.pusch_dmrs_type==pusch_dmrs_type1)?6:8);
       gNB->pusch_vars[UE_id]->dmrs_symbol = symbol;
     } else {
         nb_re_pusch = rel15_ul->number_rbs * NR_NB_SC_PER_RB;
@@ -1054,7 +1054,7 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
                                   symbol,
                                   bwp_start_subcarrier,
                                   rel15_ul->number_rbs,
-                                  &gNB->dmrs_UplinkConfig);
+                                  &gNB->pusch_config.dmrs_UplinkConfig);
 
     //----------------------------------------------------------
     //--------------------- RBs extraction ---------------------
@@ -1073,7 +1073,7 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
                                 gNB->pusch_vars[UE_id]->dmrs_symbol,
                                 rel15_ul->number_symbols,
                                 mapping_type,
-                                &gNB->dmrs_UplinkConfig);
+                                &gNB->pusch_config.dmrs_UplinkConfig);
 
     nr_ulsch_scale_channel(gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
                            frame_parms,
@@ -1081,7 +1081,7 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
                            symbol,
                            dmrs_symbol_flag,
                            rel15_ul->number_rbs,
-                           gNB->dmrs_UplinkConfig.pusch_dmrs_type);
+                           gNB->pusch_config.dmrs_UplinkConfig.pusch_dmrs_type);
 
     if (first_symbol_flag==1) {
 

openair1/PHY/NR_UE_TRANSPORT/dci_nr.c

@@ -1975,7 +1975,7 @@ uint16_t nr_dci_format_size (PHY_VARS_NR_UE *ue,
   PUSCH_Config_t pusch_config       = ue->pusch_config;
   PUCCH_Config_t pucch_config_dedicated       = ue->pucch_config_dedicated_nr[eNB_id];
   crossCarrierSchedulingConfig_t crossCarrierSchedulingConfig = ue->crossCarrierSchedulingConfig;
-  dmrs_UplinkConfig_t dmrs_UplinkConfig = ue->dmrs_UplinkConfig;
+  dmrs_UplinkConfig_t dmrs_UplinkConfig = ue->pusch_config.dmrs_UplinkConfig;
   dmrs_DownlinkConfig_t dmrs_DownlinkConfig = ue->dmrs_DownlinkConfig;
   csi_MeasConfig_t csi_MeasConfig = ue->csi_MeasConfig;
   PUSCH_ServingCellConfig_t PUSCH_ServingCellConfig= ue->PUSCH_ServingCellConfig;

openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c

@@ -142,14 +142,14 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
                                             0,
                                             0,
                                             harq_process_ul_ue->number_of_symbols,
-                                            &UE->dmrs_UplinkConfig,
+                                            &UE->pusch_config.dmrs_UplinkConfig,
                                             mapping_type,
                                             frame_parms->ofdm_symbol_size);
 
-    ulsch_ue->length_dmrs = UE->dmrs_UplinkConfig.pusch_maxLength;
+    ulsch_ue->length_dmrs = UE->pusch_config.dmrs_UplinkConfig.pusch_maxLength;
     ulsch_ue->rnti        = n_rnti;
     ulsch_ue->Nid_cell    = Nid_cell;
-    ulsch_ue->nb_re_dmrs  = ((UE->dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1)?6:4)*number_dmrs_symbols;
+    ulsch_ue->nb_re_dmrs  = ((UE->pusch_config.dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1)?6:4)*number_dmrs_symbols;
 
     N_RE_prime = NR_NB_SC_PER_RB*harq_process_ul_ue->number_of_symbols - ulsch_ue->nb_re_dmrs - N_PRB_oh;
 
@@ -277,7 +277,7 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
   pusch_dmrs = UE->nr_gold_pusch_dmrs[slot];
   n_dmrs = (harq_process_ul_ue->nb_rb*ulsch_ue->nb_re_dmrs);
   int16_t mod_dmrs[n_dmrs<<1];
-  dmrs_type = UE->dmrs_UplinkConfig.pusch_dmrs_type;
+  dmrs_type = UE->pusch_config.dmrs_UplinkConfig.pusch_dmrs_type;
   ///////////
   ////////////////////////////////////////////////////////////////////////
 
@@ -313,7 +313,7 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
                              0,
                              0,
                              harq_process_ul_ue->number_of_symbols,
-                             &UE->dmrs_UplinkConfig,
+                             &UE->pusch_config.dmrs_UplinkConfig,
                              mapping_type,
                              frame_parms->ofdm_symbol_size);
 
@@ -379,7 +379,7 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
                                  n,
                                  delta,
                                  harq_process_ul_ue->number_of_symbols,
-                                 &UE->dmrs_UplinkConfig,
+                                 &UE->pusch_config.dmrs_UplinkConfig,
                                  mapping_type,
                                  frame_parms->ofdm_symbol_size);
 

openair1/PHY/defs_gNB.h

@@ -670,6 +670,9 @@ typedef struct PHY_VARS_gNB_s {
   /// PDSCH DMRS sequence
   uint32_t ****nr_gold_pdsch_dmrs;
 
+  /// flag to indicate if PTRS is configured
+  uint8_t ptrs_configured;
+  
   /// PUSCH DMRS
   uint32_t nr_gold_pusch[2][20][2][NR_MAX_PUSCH_DMRS_INIT_LENGTH_DWORD];
 
@@ -727,8 +730,6 @@ typedef struct PHY_VARS_gNB_s {
   // SRS Variables
   SOUNDINGRS_UL_CONFIG_DEDICATED soundingrs_ul_config_dedicated[NUMBER_OF_UE_MAX];
 
-  dmrs_UplinkConfig_t dmrs_UplinkConfig;
-
   dmrs_DownlinkConfig_t dmrs_DownlinkConfig;
 
   uint8_t ncs_cell[20][7];

openair1/PHY/defs_nr_UE.h

@@ -1012,6 +1012,9 @@ typedef struct {
   /// PUSCH DMRS sequence
   uint32_t ****nr_gold_pusch_dmrs;
 
+  /// flag to indicate if PTRS is configured
+  uint8_t ptrs_configured;
+
   uint32_t X_u[64][839];
 
   uint32_t high_speed_flag;
@@ -1143,7 +1146,6 @@ typedef struct {
 
   crossCarrierSchedulingConfig_t crossCarrierSchedulingConfig;
   supplementaryUplink_t supplementaryUplink;
-  dmrs_UplinkConfig_t dmrs_UplinkConfig;
   dmrs_DownlinkConfig_t dmrs_DownlinkConfig;
   csi_MeasConfig_t csi_MeasConfig;
   PUSCH_ServingCellConfig_t PUSCH_ServingCellConfig;

openair1/PHY/impl_defs_nr.h

@@ -510,9 +510,6 @@ typedef struct {
   uint8_t         startSymbolAndLength;
 } PUSCH_TimeDomainResourceAllocation_t;
 ////////////////////////////////////////////////////////////////////////////////################################
-typedef struct { // The IE PTRS-UplinkConfig is used to configure uplink Phase-Tracking-Reference-Signals (PTRS)
-
-} ptrs_UplinkConfig_t;
 typedef enum{
   maxCodeBlockGroupsPerTransportBlock_n2 = 2,
   maxCodeBlockGroupsPerTransportBlock_n4 = 4,
@@ -544,6 +541,12 @@ typedef enum {
   pusch_dmrs_pos2 = 2,
   pusch_dmrs_pos3 = 3,
 } pusch_dmrs_AdditionalPosition_t;
+typedef enum {
+  offset00 = 0,
+  offset01 = 1,
+  offset10 = 2,
+  offset11 = 3,
+} ptrs_resource_elementoffset_t;
 typedef enum {
   pdsch_len1 = 1,
   pdsch_len2 = 2
@@ -552,6 +555,22 @@ typedef enum {
   pusch_len1 = 1,
   pusch_len2 = 2
 } pusch_maxLength_t;
+typedef struct {
+  uint8_t ptrs_mcs1;
+  uint8_t ptrs_mcs2;
+  uint8_t ptrs_mcs3;
+} ptrs_time_density_t;
+typedef struct {
+  uint16_t n_rb0;
+  uint16_t n_rb1;
+} ptrs_frequency_density_t;
+typedef struct { // The IE PTRS-UplinkConfig is used to configure uplink Phase-Tracking-Reference-Signals (PTRS)
+  uint8_t  num_ptrs_ports;
+  ptrs_resource_elementoffset_t resourceElementOffset;
+  ptrs_time_density_t  timeDensity;
+  ptrs_frequency_density_t  frequencyDensity;
+  uint32_t  ul_ptrs_power;
+} ptrs_UplinkConfig_t;
 typedef struct { // The IE DMRS-DownlinkConfig is used to configure downlink demodulation reference signals for PDSCH
   pdsch_dmrs_type_t pdsch_dmrs_type;
   pdsch_dmrs_AdditionalPosition_t pdsch_dmrs_AdditionalPosition;
@@ -563,6 +582,7 @@ typedef struct { // The IE DMRS-UplinkConfig is used to configure uplink demodul
   pusch_dmrs_type_t pusch_dmrs_type;
   pusch_dmrs_AdditionalPosition_t pusch_dmrs_AdditionalPosition;
   pusch_maxLength_t pusch_maxLength;
+  ptrs_UplinkConfig_t ptrs_UplinkConfig;
   uint16_t scramblingID0;
   uint16_t scramblingID1;
 } dmrs_UplinkConfig_t;
@@ -647,6 +667,10 @@ typedef struct {
  * resourceAllocation
  */
   ul_resourceAllocation_t ul_resourceAllocation;
+/*
+ * DMRS-Uplinkconfig
+ */
+  dmrs_UplinkConfig_t dmrs_UplinkConfig;
 /*
  * rgb_Size
  */

openair1/SCHED_NR/phy_procedures_nr_gNB.c

@@ -244,11 +244,11 @@ void nr_ulsch_procedures(PHY_VARS_gNB *gNB, int frame_rx, int slot_rx, int UE_id
                                             0,
                                             0,
                                             number_symbols,
-                                            &gNB->dmrs_UplinkConfig,
+                                            &gNB->pusch_config.dmrs_UplinkConfig,
                                             mapping_type,
                                             frame_parms->ofdm_symbol_size);
 
-  nb_re_dmrs = ((gNB->dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1)?6:4)*number_dmrs_symbols;
+  nb_re_dmrs = ((gNB->pusch_config.dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1)?6:4)*number_dmrs_symbols;
 
   G = nr_get_G(nfapi_ulsch_pdu_rel15->number_rbs,
                number_symbols,