Merge remote-tracking branch 'origin/NR_FR2_RRC_SSB' into rh_wk50_debug

Conflicts:
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c

openair1/PHY/INIT/nr_parms.c

@@ -41,12 +41,10 @@ int nr_get_ssb_start_symbol(NR_DL_FRAME_PARMS *fp)
   int case_E[8] = {8, 12, 16, 20, 32, 36, 40, 44};
 
   switch(mu) {
-
     case NR_MU_0: // case A
       n = i_ssb >> 1;
       symbol = case_AC[i_ssb % 2] + 14*n;
       break;
-
     case NR_MU_1:
       if (type == 1){ // case B
         n = i_ssb >> 2;
@@ -57,20 +55,16 @@ int nr_get_ssb_start_symbol(NR_DL_FRAME_PARMS *fp)
          symbol = case_AC[i_ssb % 2] + 14*n;
        }
        break;
-
      case NR_MU_3: // case D
        n_temp = i_ssb >> 2;
        n = n_temp + (n_temp >> 2);
        symbol = case_BD[i_ssb % 4] + 28*n;
        break;
-
      case NR_MU_4:  // case E
        n_temp = i_ssb >> 3;
        n = n_temp + (n_temp >> 2);
        symbol = case_E[i_ssb % 8] + 56*n;
        break;
-
-
      default:
        AssertFatal(0==1, "Invalid numerology index %d for the synchronization block\n", mu);
   }

openair1/PHY/NR_UE_ESTIMATION/nr_adjust_synch_ue.c

@@ -47,6 +47,7 @@ void nr_adjust_synch_ue(NR_DL_FRAME_PARMS *frame_parms,
   int temp = 0, i, aa, max_val = 0, max_pos = 0;
   int diff;
   short Re,Im,ncoef;
+  uint8_t sync_offset = 0;
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_ADJUST_SYNCH, VCD_FUNCTION_IN);
 
@@ -80,11 +81,14 @@ void nr_adjust_synch_ue(NR_DL_FRAME_PARMS *frame_parms,
   // do not filter to have proactive timing adjustment
   //max_pos_fil = max_pos;
 
-  if(subframe == 0)
-  {
       diff = max_pos_fil - (frame_parms->nb_prefix_samples>>3);
 
-      if ( abs(diff) < SYNCH_HYST )
+      if (frame_parms->freq_range==nr_FR2) 
+		sync_offset = 2;
+      else
+		sync_offset = 0;
+	
+      if ( abs(diff) < (SYNCH_HYST+sync_offset) )
           ue->rx_offset = 0;
       else
           ue->rx_offset = diff;
@@ -134,5 +138,5 @@ void nr_adjust_synch_ue(NR_DL_FRAME_PARMS *frame_parms,
       #endif //DEBUG_PHY
 
       VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_ADJUST_SYNCH, VCD_FUNCTION_OUT);
-  }
+
 }

openair1/PHY/NR_UE_ESTIMATION/nr_ue_measurements.c

@@ -243,7 +243,7 @@ void nr_ue_rsrp_measurements(PHY_VARS_NR_UE *ue,
 	unsigned int  ssb_offset = ue->frame_parms.first_carrier_offset + ue->frame_parms.ssb_start_subcarrier;
 	if (ssb_offset>= ue->frame_parms.ofdm_symbol_size) ssb_offset-=ue->frame_parms.ofdm_symbol_size;
 	
-	symbol_offset = ue->frame_parms.ofdm_symbol_size*(ue->symbol_offset+1);
+	symbol_offset = ue->frame_parms.ofdm_symbol_size*((ue->symbol_offset+1)%(ue->frame_parms.symbols_per_slot));
 
     ue->measurements.rsrp[eNB_offset] = 0;
 

openair1/PHY/NR_UE_TRANSPORT/dci_nr.c

@@ -373,7 +373,10 @@ void nr_pdcch_extract_rbs_single(int32_t **rxdataF,
     for (int rb=0;rb<coreset_nbr_rb;rb++,c_rb++) {
       c_rb_by6 = c_rb/6;
       // skip zeros in frequency domain bitmap
-      while ((coreset_freq_dom[c_rb_by6>>3] & (1<<(c_rb_by6&7))) == 0) c_rb+=6;
+      while ((coreset_freq_dom[c_rb_by6>>3] & (1<<(7-(c_rb_by6&7)))) == 0) {
+	  c_rb+=6;
+	  c_rb_by6 = c_rb/6;
+	}
 
       LOG_DDD("c_rb=%d\n",c_rb);
       rxF=NULL;

openair1/PHY/NR_UE_TRANSPORT/nr_initial_sync.c

@@ -304,8 +304,11 @@ int nr_initial_sync(UE_nr_rxtx_proc_t *proc, PHY_VARS_NR_UE *ue, runmode_t mode,
       if (ret == 0) {
         // sync at symbol ue->symbol_offset
         // computing the offset wrt the beginning of the frame
-        sync_pos_frame = (fp->ofdm_symbol_size + fp->nb_prefix_samples0)+((ue->symbol_offset)-1)*(fp->ofdm_symbol_size + fp->nb_prefix_samples);
-
+        int mu = fp->numerology_index;
+        // number of symbols with different prefix length
+        // every 7*(1<<mu) symbols there is a different prefix length (38.211 5.3.1)
+        int n_symb_prefix0 = (ue->symbol_offset/(7*(1<<mu)))+1;
+        sync_pos_frame = n_symb_prefix0*(fp->ofdm_symbol_size + fp->nb_prefix_samples0)+(ue->symbol_offset-n_symb_prefix0)*(fp->ofdm_symbol_size + fp->nb_prefix_samples);
         if (ue->ssb_offset < sync_pos_frame)
           ue->rx_offset = fp->samples_per_frame - sync_pos_frame + ue->ssb_offset;
         else

openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c

@@ -538,6 +538,7 @@ int nr_rx_pbch( PHY_VARS_NR_UE *ue,
   M =  NR_POLAR_PBCH_E;
   nushift = (Lmax==4)? i_ssb&3 : i_ssb&7;
   uint32_t unscrambling_mask = (Lmax==64)?0x100006D:0x1000041;
+
   nr_pbch_unscrambling(nr_ue_pbch_vars,frame_parms->Nid_cell,nushift,M,NR_POLAR_PBCH_E,0,0);
   //polar decoding de-rate matching
   const t_nrPolar_params *currentPtr = nr_polar_params( NR_POLAR_PBCH_MESSAGE_TYPE, NR_POLAR_PBCH_PAYLOAD_BITS, NR_POLAR_PBCH_AGGREGATION_LEVEL,1,&ue->polarList);

openair1/PHY/defs_nr_common.h

@@ -228,7 +228,7 @@ typedef struct {
   /// Pointer to Msg3 payload for UL-grant
   uint8_t *Msg3;
   /// Frame of last completed synch
-  uint8_t sync_frame;
+  uint16_t sync_frame;
   /// Flag to indicate that prach is ready to start: it is enabled with an initial delay after the sync
   uint8_t init_msg1;
 } NR_PRACH_RESOURCES_t;

openair1/SCHED_NR_UE/phy_procedures_nr_ue.c

@@ -311,7 +311,6 @@ void nr_ue_pbch_procedures(uint8_t gNB_id,
 {
   //  int i;
   //int pbch_tx_ant=0;
-  //uint8_t pbch_phase;
   int ret = 0;
   //static uint8_t first_run = 1;
   //uint8_t pbch_trials = 0;
@@ -323,7 +322,7 @@ void nr_ue_pbch_procedures(uint8_t gNB_id,
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_PBCH_PROCEDURES, VCD_FUNCTION_IN);
 
-  //LOG_I(PHY,"[UE  %d] Frame %d, Trying PBCH %d (NidCell %d, gNB_id %d)\n",ue->Mod_id,frame_rx,pbch_phase,ue->frame_parms.Nid_cell,gNB_id);
+  LOG_D(PHY,"[UE  %d] Frame %d, Trying PBCH (NidCell %d, gNB_id %d)\n",ue->Mod_id,frame_rx,ue->frame_parms.Nid_cell,gNB_id);
 
   ret = nr_rx_pbch(ue, proc,
 		   ue->pbch_vars[gNB_id],
@@ -1710,7 +1709,7 @@ int phy_procedures_nrUE_RX(PHY_VARS_NR_UE *ue,
   int frame_rx = proc->frame_rx;
   int nr_slot_rx = proc->nr_slot_rx;
   int slot_pbch;
-  //int slot_ssb;
+  int slot_ssb;
   NR_UE_PDCCH *pdcch_vars  = ue->pdcch_vars[proc->thread_id][0];
   fapi_nr_config_request_t *cfg = &ue->nrUE_config;
 
@@ -1736,11 +1735,10 @@ int phy_procedures_nrUE_RX(PHY_VARS_NR_UE *ue,
     get_coreset_rballoc(pdcch_vars->pdcch_config[0].coreset.frequency_domain_resource,&coreset_nb_rb,&coreset_start_rb);
 
   slot_pbch = is_pbch_in_slot(cfg, frame_rx, nr_slot_rx, fp);
-  //slot_ssb = is_ssb_in_slot(cfg, frame_rx, nr_slot_rx, fp);
+  slot_ssb  = is_ssb_in_slot(cfg, frame_rx, nr_slot_rx, fp);
 
   // looking for pbch only in slot where it is supposed to be
-  if ((ue->decode_MIB == 1) && slot_pbch)
-    {
+  if (slot_ssb) {
     LOG_D(PHY," ------  PBCH ChannelComp/LLR: frame.slot %d.%d ------  \n", frame_rx%1024, nr_slot_rx);
     for (int i=1; i<4; i++) {
 
@@ -1758,14 +1756,15 @@ int phy_procedures_nrUE_RX(PHY_VARS_NR_UE *ue,
 #if UE_TIMING_TRACE
       stop_meas(&ue->dlsch_channel_estimation_stats);
 #endif
-
     }
 
     //if (mac->csirc->reportQuantity.choice.ssb_Index_RSRP){
-        nr_ue_rsrp_measurements(ue, proc, nr_slot_rx, 0);
+    nr_ue_rsrp_measurements(ue,proc,nr_slot_rx,0);
     //}
 
+    if ((ue->decode_MIB == 1) && slot_pbch) {
 
+      LOG_D(PHY," ------  Decode MIB: frame.slot %d.%d ------  \n", frame_rx%1024, nr_slot_rx);
       nr_ue_pbch_procedures(gNB_id, ue, proc, 0);
 
       if (ue->no_timing_correction==0) {
@@ -1779,6 +1778,7 @@ int phy_procedures_nrUE_RX(PHY_VARS_NR_UE *ue,
                            16384);
       }
     }
+  }
 
   if ((frame_rx%64 == 0) && (nr_slot_rx==0)) {
     printf("============================================\n");
@@ -2165,7 +2165,7 @@ void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_UE_TX_PRACH, VCD_FUNCTION_IN);
 
-  if (!prach_resources->init_msg1 && (frame_tx == (ue->prach_resources[gNB_id]->sync_frame + 150) % MAX_FRAME_NUMBER)){
+  if (!prach_resources->init_msg1 && ((MAX_FRAME_NUMBER+frame_tx-ue->prach_resources[gNB_id]->sync_frame)% MAX_FRAME_NUMBER)>150){
     ue->prach_cnt = 0;
     prach_resources->init_msg1 = 1;
   }

openair2/GNB_APP/gnb_config.c

@@ -244,10 +244,10 @@ void fix_scc(NR_ServingCellConfigCommon_t *scc,uint64_t ssbmap) {
     scc->ssb_PositionsInBurst->choice.longBitmap.bits_unused = 0;
     scc->ssb_PositionsInBurst->choice.longBitmap.buf = CALLOC(1,8);
     for (int j=0; j<8; j++) {
-       scc->ssb_PositionsInBurst->choice.longBitmap.buf[7-j] = 0;
+       scc->ssb_PositionsInBurst->choice.longBitmap.buf[j] = 0;
        curr_bit = (ssbmap>>(j<<3))&(0xff);
        for (int i=0; i<8; i++)
-         scc->ssb_PositionsInBurst->choice.longBitmap.buf[7-j] |= (((curr_bit>>(7-i))&0x01)<<i);
+         scc->ssb_PositionsInBurst->choice.longBitmap.buf[j] |= (((curr_bit>>(7-i))&0x01)<<i);
     }
   }
 

openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c

@@ -937,14 +937,22 @@ int64_t table_6_3_3_2_4_prachConfig_Index [256][10] = {
 
 
 int get_format0(uint8_t index,
-                uint8_t unpaired){
+                uint8_t unpaired,
+		frequency_range_t frequency_range){
 
   uint16_t format;
-  if (unpaired)
+  if (unpaired) {
+    if (frequency_range==FR1)
       format = table_6_3_3_2_3_prachConfig_Index[index][0];
     else
+      format = table_6_3_3_2_4_prachConfig_Index[index][0];
+  }
+  else {
+    if (frequency_range==FR1)
       format = table_6_3_3_2_2_prachConfig_Index[index][0];
-
+    else
+      AssertFatal(0==1,"no paired spectrum for FR2\n");
+  }
   return format;
 }
 
@@ -1402,11 +1410,12 @@ uint16_t table_63313[838] = {
 
 uint8_t compute_nr_root_seq(NR_RACH_ConfigCommon_t *rach_config,
                             uint8_t nb_preambles,
-                            uint8_t unpaired) {
+                            uint8_t unpaired,
+			    frequency_range_t frequency_range) {
 
   uint8_t config_index = rach_config->rach_ConfigGeneric.prach_ConfigurationIndex;
   uint8_t ncs_index = rach_config->rach_ConfigGeneric.zeroCorrelationZoneConfig;
-  uint16_t format0 = get_format0(config_index, unpaired);
+  uint16_t format0 = get_format0(config_index, unpaired, frequency_range);
   uint16_t NCS = get_NCS(ncs_index, format0, rach_config->restrictedSetConfig);
   uint16_t L_ra = (rach_config->prach_RootSequenceIndex.present==NR_RACH_ConfigCommon__prach_RootSequenceIndex_PR_l139) ? 139 : 839;
   uint16_t r,u,index,q,d_u,n_shift_ra,n_shift_ra_bar,d_start;

openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.h

@@ -44,6 +44,11 @@
 #define MAX_TDM (7) // Maximum nb of PRACH occasions TDMed in a slot
 #define MAX_FDM (8) // Maximum nb of PRACH occasions FDMed in a slot
 
+typedef enum frequency_range_e {
+    FR1 = 0, 
+    FR2
+} frequency_range_t;
+
 // PRACH occasion details
 typedef struct prach_occasion_info {
   uint8_t start_symbol; // 0 - 13 (14 symbols in a slot)
@@ -159,11 +164,12 @@ uint8_t get_pusch_mcs_table(long *mcs_Table,
 
 uint8_t compute_nr_root_seq(NR_RACH_ConfigCommon_t *rach_config,
                             uint8_t nb_preambles,
-                            uint8_t unpaired);
+                            uint8_t unpaired,
+			    frequency_range_t);
 
 int ul_ant_bits(NR_DMRS_UplinkConfig_t *NR_DMRS_UplinkConfig,long transformPrecoder);
 
-int get_format0(uint8_t index, uint8_t unpaired);
+int get_format0(uint8_t index, uint8_t unpaired,frequency_range_t);
 
 int64_t *get_prach_config_info(uint32_t pointa,
                                uint8_t index,

openair2/LAYER2/NR_MAC_UE/config_ue.c

@@ -147,7 +147,6 @@ void config_common_ue(NR_UE_MAC_INST_t *mac,
   fapi_nr_config_request_t        *cfg = &mac->phy_config.config_req;
   NR_ServingCellConfigCommon_t    *scc = mac->scc;
   int i;
-  lte_frame_type_t frame_type;
 
   mac->phy_config.Mod_id = module_id;
   mac->phy_config.CC_id = cc_idP;
@@ -201,6 +200,10 @@ void config_common_ue(NR_UE_MAC_INST_t *mac,
     }
   }
 
+  uint32_t band = *scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0];
+  frequency_range_t  frequency_range = band<100?FR1:FR2;
+ 
+  lte_frame_type_t frame_type;
   get_frame_type(*scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0], *scc->ssbSubcarrierSpacing, &frame_type);
 
   // cell config
@@ -236,8 +239,8 @@ void config_common_ue(NR_UE_MAC_INST_t *mac,
       cfg->ssb_table.ssb_mask_list[0].ssb_mask = 0;
       cfg->ssb_table.ssb_mask_list[1].ssb_mask = 0;
       for (i=0; i<4; i++) {
-        cfg->ssb_table.ssb_mask_list[0].ssb_mask += (scc->ssb_PositionsInBurst->choice.longBitmap.buf[i]<<i*8);
-        cfg->ssb_table.ssb_mask_list[1].ssb_mask += (scc->ssb_PositionsInBurst->choice.longBitmap.buf[i+4]<<i*8);
+        cfg->ssb_table.ssb_mask_list[0].ssb_mask += (scc->ssb_PositionsInBurst->choice.longBitmap.buf[3-i]<<i*8);
+        cfg->ssb_table.ssb_mask_list[1].ssb_mask += (scc->ssb_PositionsInBurst->choice.longBitmap.buf[7-i]<<i*8);
       }
       break;
     default:
@@ -310,7 +313,7 @@ void config_common_ue(NR_UE_MAC_INST_t *mac,
 
     cfg->prach_config.num_prach_fd_occasions_list[i].k1 = scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->rach_ConfigGeneric.msg1_FrequencyStart;
     cfg->prach_config.num_prach_fd_occasions_list[i].prach_zero_corr_conf = scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->rach_ConfigGeneric.zeroCorrelationZoneConfig;
-    cfg->prach_config.num_prach_fd_occasions_list[i].num_root_sequences = compute_nr_root_seq(scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup, nb_preambles, frame_type);
+    cfg->prach_config.num_prach_fd_occasions_list[i].num_root_sequences = compute_nr_root_seq(scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup, nb_preambles, frame_type,frequency_range);
     //cfg->prach_config.num_prach_fd_occasions_list[i].num_unused_root_sequences = ???
   }
 

openair2/LAYER2/NR_MAC_UE/mac_defs.h

@@ -205,7 +205,7 @@ typedef struct {
   /// Random-access procedure flag
   uint8_t RA_active;
   /// Random-access window counter
-  int8_t RA_window_cnt;
+  int16_t RA_window_cnt;
   /// Random-access Msg3 size in bytes
   uint8_t RA_Msg3_size;
   /// Random-access prachMaskIndex
@@ -292,10 +292,6 @@ typedef enum channel_bandwidth_e {
     bw_100MHz = 0x32
 } channel_bandwidth_t;
 
-typedef enum frequency_range_e {
-    FR1 = 0, 
-    FR2
-} frequency_range_t;
 
 typedef struct {
   uint8_t identifier_dci_formats          ; // 0  IDENTIFIER_DCI_FORMATS:

openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c

@@ -970,35 +970,30 @@ int8_t nr_ue_decode_mib(module_id_t module_id,
   uint16_t frame_number_4lsb = 0;
   for (int i=0; i<4; i++)
     frame_number_4lsb |= ((extra_bits>>i)&1)<<(3-i);
-  //uint8_t half_frame_bit = ( extra_bits >> 4 ) & 0x1;               //	extra bits[4]
+  uint8_t half_frame_bit = ( extra_bits >> 4 ) & 0x1;               //	extra bits[4]
   uint8_t ssb_subcarrier_offset_msb = ( extra_bits >> 5 ) & 0x1;    //	extra bits[5]
   uint8_t ssb_subcarrier_offset = (uint8_t)mac->mib->ssb_SubcarrierOffset;
 
-  //uint32_t ssb_index = 0;    //  TODO: ssb_index should obtain from L1 in case Lssb != 64
-
   frame = frame << 4;
   frame = frame | frame_number_4lsb;
-
   if(ssb_length == 64){
-    ssb_index = ssb_index & (( extra_bits >> 2 ) & 0x1C );    //	{ extra_bits[5:7], ssb_index[2:0] }
+    for (int i=0; i<3; i++)
+      ssb_index += (((extra_bits>>(7-i))&0x01)<<(3+i));
   }else{
     if(ssb_subcarrier_offset_msb){
       ssb_subcarrier_offset = ssb_subcarrier_offset | 0x10;
     }
   }
 
-#ifdef DEBUG_MIB
-  LOG_I(MAC,"system frame number(6 MSB bits): %d\n",  mac->mib->systemFrameNumber.buf[0]);
-  LOG_I(MAC,"system frame number(with LSB): %d\n", (int)frame);
-  LOG_I(MAC,"subcarrier spacing (0=15or60, 1=30or120): %d\n", (int)mac->mib->subCarrierSpacingCommon);
-  LOG_I(MAC,"ssb carrier offset(with MSB):  %d\n", (int)ssb_subcarrier_offset);
-  LOG_I(MAC,"dmrs type A position (0=pos2,1=pos3): %d\n", (int)mac->mib->dmrs_TypeA_Position);
-  LOG_I(MAC,"pdcch config sib1:             %d\n", (int)mac->mib->pdcch_ConfigSIB1);
-  LOG_I(MAC,"cell barred (0=barred,1=notBarred): %d\n", (int)mac->mib->cellBarred);
-  LOG_I(MAC,"intra frequency reselection (0=allowed,1=notAllowed): %d\n", (int)mac->mib->intraFreqReselection);
-  LOG_I(MAC,"half frame bit(extra bits):    %d\n", (int)half_frame_bit);
-  LOG_I(MAC,"ssb index(extra bits):         %d\n", (int)ssb_index);
-#endif
+  LOG_D(MAC,"system frame number(6 MSB bits): %d\n",  mac->mib->systemFrameNumber.buf[0]);
+  LOG_D(MAC,"system frame number(with LSB): %d\n", (int)frame);
+  LOG_D(MAC,"subcarrier spacing (0=15or60, 1=30or120): %d\n", (int)mac->mib->subCarrierSpacingCommon);
+  LOG_D(MAC,"ssb carrier offset(with MSB):  %d\n", (int)ssb_subcarrier_offset);
+  LOG_D(MAC,"dmrs type A position (0=pos2,1=pos3): %d\n", (int)mac->mib->dmrs_TypeA_Position);
+  LOG_D(MAC,"cell barred (0=barred,1=notBarred): %d\n", (int)mac->mib->cellBarred);
+  LOG_D(MAC,"intra frequency reselection (0=allowed,1=notAllowed): %d\n", (int)mac->mib->intraFreqReselection);
+  LOG_D(MAC,"half frame bit(extra bits):    %d\n", (int)half_frame_bit);
+  LOG_D(MAC,"ssb index(extra bits):         %d\n", (int)ssb_index);
 
   subcarrier_spacing_t scs_ssb = scs_30kHz;      //  default for 
   //const uint32_t scs_index = 0;
@@ -1021,8 +1016,8 @@ int8_t nr_ue_decode_mib(module_id_t module_id,
   int32_t num_rbs = -1;
   int32_t num_symbols = -1;
   int32_t rb_offset = -1;
-  //LOG_I(MAC,"<<<<<<<<<configSIB1 %d index_4msb %d index_4lsb %d scs_ssb %d scs_pdcch %d switch %d ",
-  //mac->mib->pdcch_ConfigSIB1,index_4msb,index_4lsb,scs_ssb,scs_pdcch, (scs_ssb << 5)|scs_pdcch);
+  LOG_D(MAC,"<<<<<<<<<configSIB1: controlResourceSetZero %d searchSpaceZero %d scs_ssb %d scs_pdcch %d switch %d ",
+        index_4msb,index_4lsb,scs_ssb,scs_pdcch, (scs_ssb << 5)|scs_pdcch);
 
   //  type0-pdcch coreset
   switch( (scs_ssb << 5)|scs_pdcch ){

openair2/LAYER2/NR_MAC_gNB/config.c

@@ -124,6 +124,9 @@ void config_common(int Mod_idP, int pdsch_AntennaPorts, NR_ServingCellConfigComm
     }
   }
 
+  uint32_t band = *scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0];
+  frequency_range_t frequency_range = band<100?FR1:FR2;
+
   lte_frame_type_t frame_type;
   get_frame_type(*scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0], *scc->ssbSubcarrierSpacing, &frame_type);
   RC.nrmac[Mod_idP]->common_channels[0].frame_type = frame_type;
@@ -213,7 +216,7 @@ void config_common(int Mod_idP, int pdsch_AntennaPorts, NR_ServingCellConfigComm
     cfg->prach_config.num_prach_fd_occasions_list[i].prach_zero_corr_conf.value = scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->rach_ConfigGeneric.zeroCorrelationZoneConfig;
     cfg->prach_config.num_prach_fd_occasions_list[i].prach_zero_corr_conf.tl.tag = NFAPI_NR_CONFIG_PRACH_ZERO_CORR_CONF_TAG;
     cfg->num_tlv++;
-    cfg->prach_config.num_prach_fd_occasions_list[i].num_root_sequences.value = compute_nr_root_seq(scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup,nb_preambles, frame_type);
+    cfg->prach_config.num_prach_fd_occasions_list[i].num_root_sequences.value = compute_nr_root_seq(scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup,nb_preambles, frame_type, frequency_range);
     cfg->prach_config.num_prach_fd_occasions_list[i].num_root_sequences.tl.tag = NFAPI_NR_CONFIG_NUM_ROOT_SEQUENCES_TAG;
     cfg->num_tlv++;
     cfg->prach_config.num_prach_fd_occasions_list[i].num_unused_root_sequences.value = 1;
@@ -252,8 +255,8 @@ void config_common(int Mod_idP, int pdsch_AntennaPorts, NR_ServingCellConfigComm
       cfg->ssb_table.ssb_mask_list[0].ssb_mask.value = 0;
       cfg->ssb_table.ssb_mask_list[1].ssb_mask.value = 0;
       for (i=0; i<4; i++) {
-        cfg->ssb_table.ssb_mask_list[0].ssb_mask.value += (scc->ssb_PositionsInBurst->choice.longBitmap.buf[i+4]<<i*8);
-        cfg->ssb_table.ssb_mask_list[1].ssb_mask.value += (scc->ssb_PositionsInBurst->choice.longBitmap.buf[i]<<i*8);
+        cfg->ssb_table.ssb_mask_list[0].ssb_mask.value += (scc->ssb_PositionsInBurst->choice.longBitmap.buf[3-i]<<i*8);
+        cfg->ssb_table.ssb_mask_list[1].ssb_mask.value += (scc->ssb_PositionsInBurst->choice.longBitmap.buf[7-i]<<i*8);
       }
       break;
     default:

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_uci.c

@@ -155,7 +155,7 @@ void compute_csi_bitlen (NR_CellGroupConfig_t *secondaryCellGroup, NR_UE_info_t
                 UE_info->csi_report_template[UE_id][csi_report_id].CSI_report_bitlen[0].diff_rsrp_bitlen =0;
               }
 
-              LOG_I (MAC, "UCI: CSI_bit len : ssbri %d, rsrp: %d, diff_rsrp: %d",
+              LOG_I (MAC, "UCI: CSI_bit len : ssbri %d, rsrp: %d, diff_rsrp: %d\n",
                      UE_info->csi_report_template[UE_id][csi_report_id].CSI_report_bitlen[0].cri_ssbri_bitlen,
                      UE_info->csi_report_template[UE_id][csi_report_id].CSI_report_bitlen[0].rsrp_bitlen,
                      UE_info->csi_report_template[UE_id][csi_report_id].CSI_report_bitlen[0].diff_rsrp_bitlen);
@@ -221,7 +221,7 @@ void nr_csi_meas_reporting(int Mod_idP,
     if ( (frame%(period/n_slots_frame)==(offset/n_slots_frame)) && (slot==((sched_slot/slots_per_tdd)*slots_per_tdd))) {
 
       // we are scheduling pucch for csi in the first pucch occasion (this comes before ack/nack)
-      curr_pucch = &UE_info->UE_sched_ctrl[UE_id].sched_pucch[sched_slot-slots_per_tdd+ul_slots][0];
+      curr_pucch = &UE_info->UE_sched_ctrl[UE_id].sched_pucch[(sched_slot%slots_per_tdd)-slots_per_tdd+ul_slots][0];
 
       NR_PUCCH_CSI_Resource_t *pucchcsires = csirep->reportConfigType.choice.periodic->pucch_CSI_ResourceList.list.array[0];
 

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c

@@ -441,6 +441,7 @@ void nr_rx_sdu(const module_id_t gnb_mod_idP,
             "reset RA state information for RA-RNTI %04x/index %d\n",
             ra->rnti,
             i);
+
       return;
     }
   }

openair2/RRC/NR/rrc_gNB_reconfig.c

@@ -57,9 +57,22 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
   AssertFatal(servingcellconfigcommon!=NULL,"servingcellconfigcommon is null\n");
   AssertFatal(secondaryCellGroup!=NULL,"secondaryCellGroup is null\n");
 
-  if(servingcellconfigcommon->ssb_PositionsInBurst->present !=2)
-    AssertFatal(1==0,"Currenrly implemented only for medium size SSB bitmap\n");
-  uint8_t bitmap = servingcellconfigcommon->ssb_PositionsInBurst->choice.mediumBitmap.buf[0];
+  uint64_t bitmap=0;
+  switch (servingcellconfigcommon->ssb_PositionsInBurst->present) {
+    case 1 :
+      bitmap = ((uint64_t) servingcellconfigcommon->ssb_PositionsInBurst->choice.shortBitmap.buf[0])<<56;
+      break;
+    case 2 :
+      bitmap = ((uint64_t) servingcellconfigcommon->ssb_PositionsInBurst->choice.mediumBitmap.buf[0])<<56;
+      break;
+    case 3 :
+      for (int i=0; i<8; i++) {
+        bitmap |= (((uint64_t) servingcellconfigcommon->ssb_PositionsInBurst->choice.longBitmap.buf[i])<<((7-i)*8));
+      }
+      break;
+    default:
+      AssertFatal(1==0,"SSB bitmap size value %d undefined (allowed values 1,2,3) \n", servingcellconfigcommon->ssb_PositionsInBurst->present);
+  }
 
   memset(secondaryCellGroup,0,sizeof(NR_CellGroupConfig_t));
   secondaryCellGroup->cellGroupId = scg_id;
@@ -251,9 +264,9 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
  secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->tci_StatesToAddModList=calloc(1,sizeof(*secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->tci_StatesToAddModList));
 
  int n_ssb = 0;
- NR_TCI_State_t *tcic[8];
- for (int i=0;i<8;i++) {
-   if ((bitmap>>(7-i))&0x01){
+ NR_TCI_State_t *tcic[64];
+ for (int i=0;i<64;i++) {
+   if ((bitmap>>(63-i))&0x01){
      tcic[i]=calloc(1,sizeof(*tcic[i]));
      tcic[i]->tci_StateId=n_ssb;
      tcic[i]->qcl_Type1.cell=NULL;
@@ -412,11 +425,20 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
  bwp->bwp_Common->pdcch_ConfigCommon->choice.setup->controlResourceSetZero=NULL;
  bwp->bwp_Common->pdcch_ConfigCommon->choice.setup->commonControlResourceSet=calloc(1,sizeof(*bwp->bwp_Common->pdcch_ConfigCommon->choice.setup->commonControlResourceSet));
 
+ int curr_bwp = NRRIV2BW(bwp->bwp_Common->genericParameters.locationAndBandwidth,275);
+
  NR_ControlResourceSet_t *coreset = calloc(1,sizeof(*coreset));
  coreset->controlResourceSetId=1;
- // frequencyDomainResources '11111111 11111111 00000000 00000000 00000000 00000'B,
+ // frequency domain resources depends on BWP size
+ // options are 24, 48 or 96
  coreset->frequencyDomainResources.buf = calloc(1,6);
+ if (curr_bwp < 48)
+   coreset->frequencyDomainResources.buf[0] = 0xf0;
+ else
    coreset->frequencyDomainResources.buf[0] = 0xff;
+ if (curr_bwp < 96)
+   coreset->frequencyDomainResources.buf[1] = 0;
+ else
    coreset->frequencyDomainResources.buf[1] = 0xff;
  coreset->frequencyDomainResources.buf[2] = 0;
  coreset->frequencyDomainResources.buf[3] = 0;
@@ -429,9 +451,9 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
  coreset->precoderGranularity = NR_ControlResourceSet__precoderGranularity_sameAsREG_bundle;
 
  coreset->tci_StatesPDCCH_ToAddList=calloc(1,sizeof(*coreset->tci_StatesPDCCH_ToAddList));
- NR_TCI_StateId_t *tci[8];
- for (int i=0;i<8;i++) {
-   if ((bitmap>>(7-i))&0x01){
+ NR_TCI_StateId_t *tci[64];
+ for (int i=0;i<64;i++) {
+   if ((bitmap>>(63-i))&0x01){
      tci[i]=calloc(1,sizeof(*tci[i]));
      *tci[i] = i;
      ASN_SEQUENCE_ADD(&coreset->tci_StatesPDCCH_ToAddList->list,tci[i]);
@@ -531,6 +553,11 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
  ss2->nrofCandidates=calloc(1,sizeof(*ss2->nrofCandidates));
  ss2->nrofCandidates->aggregationLevel1 = NR_SearchSpace__nrofCandidates__aggregationLevel1_n0;
  ss2->nrofCandidates->aggregationLevel2 = NR_SearchSpace__nrofCandidates__aggregationLevel2_n0;
+ if (curr_bwp < 48)
+   ss2->nrofCandidates->aggregationLevel4 = NR_SearchSpace__nrofCandidates__aggregationLevel4_n1;
+ else if (curr_bwp < 96)
+   ss2->nrofCandidates->aggregationLevel4 = NR_SearchSpace__nrofCandidates__aggregationLevel4_n2;
+ else
    ss2->nrofCandidates->aggregationLevel4 = NR_SearchSpace__nrofCandidates__aggregationLevel4_n4;
  ss2->nrofCandidates->aggregationLevel8 = NR_SearchSpace__nrofCandidates__aggregationLevel8_n0;
  ss2->nrofCandidates->aggregationLevel16 = NR_SearchSpace__nrofCandidates__aggregationLevel16_n0;
@@ -653,9 +680,9 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
 
 
  n_ssb = 0;
- NR_TCI_State_t *tcid[8];
- for (int i=0;i<8;i++) {
-   if ((bitmap>>(7-i))&0x01){
+ NR_TCI_State_t *tcid[64];
+ for (int i=0;i<64;i++) {
+   if ((bitmap>>(63-i))&0x01){
      tcid[i]=calloc(1,sizeof(*tcid[i]));
      tcid[i]->tci_StateId=n_ssb;
      tcid[i]->qcl_Type1.cell=NULL;
@@ -915,7 +942,7 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
  NR_PUCCH_Resource_t *pucchres2=calloc(1,sizeof(*pucchres2));
  NR_PUCCH_Resource_t *pucchres3=calloc(1,sizeof(*pucchres3));
  pucchres0->pucch_ResourceId=1;
- pucchres0->startingPRB=48;
+ pucchres0->startingPRB=8;
  pucchres0->intraSlotFrequencyHopping=NULL;
  pucchres0->secondHopPRB=NULL;
  pucchres0->format.present= NR_PUCCH_Resource__format_PR_format0;
@@ -926,7 +953,7 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
  ASN_SEQUENCE_ADD(&pucch_Config->resourceToAddModList->list,pucchres0);
 
  pucchres1->pucch_ResourceId=2;
- pucchres1->startingPRB=48;
+ pucchres1->startingPRB=8;
  pucchres1->intraSlotFrequencyHopping=NULL;
  pucchres1->secondHopPRB=NULL;
  pucchres1->format.present= NR_PUCCH_Resource__format_PR_format0;
@@ -937,23 +964,23 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
  ASN_SEQUENCE_ADD(&pucch_Config->resourceToAddModList->list,pucchres1);
 
  pucchres2->pucch_ResourceId=3;
- pucchres2->startingPRB=40;
+ pucchres2->startingPRB=0;
  pucchres2->intraSlotFrequencyHopping=NULL;
  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=4;
+ pucchres2->format.choice.format2->nrofPRBs=8;
  pucchres2->format.choice.format2->nrofSymbols=1;
  pucchres2->format.choice.format2->startingSymbolIndex=13;
  ASN_SEQUENCE_ADD(&pucch_Config->resourceToAddModList->list,pucchres2);
 
  pucchres3->pucch_ResourceId=4;
- pucchres3->startingPRB=40;
+ pucchres3->startingPRB=0;
  pucchres3->intraSlotFrequencyHopping=NULL;
  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=4;
+ pucchres3->format.choice.format2->nrofPRBs=8;
  pucchres3->format.choice.format2->nrofSymbols=1;
  pucchres3->format.choice.format2->startingSymbolIndex=12;
  ASN_SEQUENCE_ADD(&pucch_Config->resourceToAddModList->list,pucchres3);
@@ -1076,45 +1103,14 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
 
  NR_CSI_SSB_ResourceSet_t *ssbresset0 = calloc(1,sizeof(*ssbresset0));
  ssbresset0->csi_SSB_ResourceSetId=0;
- if ((bitmap>>7)&0x01){
-   NR_SSB_Index_t *ssbresset00=calloc(1,sizeof(*ssbresset00));
-   *ssbresset00=0;
-   ASN_SEQUENCE_ADD(&ssbresset0->csi_SSB_ResourceList.list,ssbresset00);
- }
- if ((bitmap>>6)&0x01) {
-   NR_SSB_Index_t *ssbresset01=calloc(1,sizeof(*ssbresset01));
-   *ssbresset01=1;
-   ASN_SEQUENCE_ADD(&ssbresset0->csi_SSB_ResourceList.list,ssbresset01);
- }
- if ((bitmap>>5)&0x01) {
-   NR_SSB_Index_t *ssbresset02=calloc(1,sizeof(*ssbresset02));
-   *ssbresset02=2;
-   ASN_SEQUENCE_ADD(&ssbresset0->csi_SSB_ResourceList.list,ssbresset02);
- }
- if ((bitmap>>4)&0x01) {
-   NR_SSB_Index_t *ssbresset03=calloc(1,sizeof(*ssbresset03));
-   *ssbresset03=3;
-   ASN_SEQUENCE_ADD(&ssbresset0->csi_SSB_ResourceList.list,ssbresset03);
- }
- if ((bitmap>>3)&0x01) {
-   NR_SSB_Index_t *ssbresset04=calloc(1,sizeof(*ssbresset04));
-   *ssbresset04=4;
-   ASN_SEQUENCE_ADD(&ssbresset0->csi_SSB_ResourceList.list,ssbresset04);
- }
- if ((bitmap>>2)&0x01) {
-   NR_SSB_Index_t *ssbresset05=calloc(1,sizeof(*ssbresset05));
-   *ssbresset05=5;
-   ASN_SEQUENCE_ADD(&ssbresset0->csi_SSB_ResourceList.list,ssbresset05);
- }
- if ((bitmap>>1)&0x01) {
-   NR_SSB_Index_t *ssbresset06=calloc(1,sizeof(*ssbresset06));
-   *ssbresset06=6;
-   ASN_SEQUENCE_ADD(&ssbresset0->csi_SSB_ResourceList.list,ssbresset06);
+
+ NR_SSB_Index_t *ssbresset[64];
+ for (int i=0;i<64;i++) {
+   if ((bitmap>>(63-i))&0x01){
+     ssbresset[i]=calloc(1,sizeof(*ssbresset[i]));
+     *ssbresset[i] = i;
+     ASN_SEQUENCE_ADD(&ssbresset0->csi_SSB_ResourceList.list,ssbresset[i]);
    }
- if ((bitmap)&0x01) {
-   NR_SSB_Index_t *ssbresset07=calloc(1,sizeof(*ssbresset07));
-   *ssbresset07=7;
-   ASN_SEQUENCE_ADD(&ssbresset0->csi_SSB_ResourceList.list,ssbresset07);
  }
  ASN_SEQUENCE_ADD(&csi_MeasConfig->csi_SSB_ResourceSetToAddModList->list,ssbresset0);
 

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band257.tm1.32PRB.usrpx300.conf

@@ -71,6 +71,11 @@ gNBs =
              initialDLBWPmappingType_2           = 0;
              #this is SS=1,L=12 
              initialDLBWPstartSymbolAndLength_2  = 54;
+
+             initialDLBWPk0_3                    = 0;
+             initialDLBWPmappingType_3           = 0;
+             #this is SS=1,L=4 //5 (4 is for 43, 5 is for 57)
+             initialDLBWPstartSymbolAndLength_3  = 57; //43; //57;
   #uplinkConfigCommon 
      #frequencyInfoUL
       ul_frequencyBand                                                 = 257;
@@ -89,7 +94,7 @@ gNBs =
         initialULBWPsubcarrierSpacing                                           = 3;
       #rach-ConfigCommon
         #rach-ConfigGeneric
-          prach_ConfigurationIndex                                  = 98;
+          prach_ConfigurationIndex                                  = 52;
 #prach_msg1_FDM
 #0 = one, 1=two, 2=four, 3=eight
           prach_msg1_FDM                                            = 0;
@@ -103,12 +108,12 @@ gNBs =
         powerRampingStep                                            = 1;
 #ra_ReponseWindow
 #1,2,4,8,10,20,40,80
-        ra_ResponseWindow                                           = 4;
+        ra_ResponseWindow                                           = 7;
 #ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR
-#1=oneeighth,2=onefourth,3=half,4=one,5=two,6=four,7=eight,8=sixteen
+#0=oneeighth,1=onefourth,2=half,3=one,4=two,5=four,6=eight,7=sixteen
         ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR                = 4;
 #oneHalf (0..15) 4,8,12,16,...60,64
-        ssb_perRACH_OccasionAndCB_PreamblesPerSSB                   = 15;
+        ssb_perRACH_OccasionAndCB_PreamblesPerSSB                   = 7;
 #ra_ContentionResolutionTimer
 #(0..7) 8,16,24,32,40,48,56,64
         ra_ContentionResolutionTimer                                = 7;
@@ -119,22 +124,26 @@ gNBs =
         prach_RootSequenceIndex                                     = 1;
         # SCS for msg1, can only be 15 for 30 kHz < 6 GHz, takes precendence over the one derived from prach-ConfigIndex
         #  
-        msg1_SubcarrierSpacing                                      = 1,
+        msg1_SubcarrierSpacing                                      = 3,
 
 # restrictedSetConfig
 # 0=unrestricted, 1=restricted type A, 2=restricted type B
         restrictedSetConfig                                         = 0,
       # pusch-ConfigCommon (up to 16 elements)
-        initialULBWPk2_0                      = 2;
+        initialULBWPk2_0                      = 6;
         initialULBWPmappingType_0             = 1
         # this is SS=0 L=11
         initialULBWPstartSymbolAndLength_0    = 55;
 
-	initialULBWPk2_1                      = 2;
+        initialULBWPk2_1                      = 6;
         initialULBWPmappingType_1             = 1;
         # this is SS=0 L=12
         initialULBWPstartSymbolAndLength_1    = 69;
 
+        initialULBWPk2_2                      = 7;
+        initialULBWPmappingType_2             = 1;
+        # this is SS=10 L=4
+        initialULBWPstartSymbolAndLength_2    = 52;
 
         msg3_DeltaPreamble                                          = 1;
         p0_NominalWithGrant                                         =-90;

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band261.tm1.32PRB.usrpn300.conf

@@ -47,7 +47,7 @@ gNBs =
         dl_carrierBandwidth                                            = 32;
      #initialDownlinkBWP
       #genericParameters
-        # this is RBstart=0,L=50 (275*(L-1))+RBstart
+        # this is RBstart=0,L=32 (275*(L-1))+RBstart
         initialDLBWPlocationAndBandwidth                                        = 8525;
 # subcarrierSpacing
 # 0=kHz15, 1=kHz30, 2=kHz60, 3=kHz120  
@@ -121,8 +121,8 @@ gNBs =
         ra_ContentionResolutionTimer                                = 7;
         rsrp_ThresholdSSB                                           = 19;
 #prach-RootSequenceIndex_PR
-#0 = 839, 1 = 139
-        prach_RootSequenceIndex_PR                                  = 1;
+#1 = 839, 2 = 139
+        prach_RootSequenceIndex_PR                                  = 2;
         prach_RootSequenceIndex                                     = 1;
         # SCS for msg1, can only be 15 for 30 kHz < 6 GHz, takes precendence over the one derived from prach-ConfigIndex
         #  
@@ -132,12 +132,12 @@ gNBs =
 # 0=unrestricted, 1=restricted type A, 2=restricted type B
         restrictedSetConfig                                         = 0,
       # pusch-ConfigCommon (up to 16 elements)
-        initialULBWPk2_0                      = 2;
+        initialULBWPk2_0                      = 6;
         initialULBWPmappingType_0             = 1
         # this is SS=0 L=11
         initialULBWPstartSymbolAndLength_0    = 55;
 
-	initialULBWPk2_1                      = 2;
+        initialULBWPk2_1                      = 6;
         initialULBWPmappingType_1             = 1;
         # this is SS=0 L=12
         initialULBWPstartSymbolAndLength_1    = 69;
@@ -211,7 +211,7 @@ gNBs =
                           );
 
     ///X2
-    enable_x2 = "yes";
+    enable_x2 = "no";
     t_reloc_prep      = 1000;      /* unit: millisecond */
     tx2_reloc_overall = 2000;      /* unit: millisecond */
     t_dc_prep         = 1000;      /* unit: millisecond */