Merge remote-tracking branch 'origin/nr_power_measurement_fixes' into integration_2021_wk13_c

ci-scripts/conf_files/gnb.band66.tm1.106PRB.usrpn300.conf

@@ -185,7 +185,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

ci-scripts/conf_files/gnb.band78.tm1.106PRB.usrpn300.conf

@@ -187,7 +187,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

nfapi/open-nFAPI/nfapi/public_inc/fapi_nr_ue_interface.h

@@ -972,7 +972,7 @@ typedef struct
 
 typedef struct 
 {
-  uint32_t ss_pbch_power;//SSB Block Power Value: TBD (-60..50 dBm)
+  int ss_pbch_power;//SSB Block Power Value: TBD (-60..50 dBm)
   uint8_t  bch_payload;//Defines option selected for generation of BCH payload, see Table 3-13 (v0.0.011 Value: 0: MAC generates the full PBCH payload 1: PHY generates the timing PBCH bits 2: PHY generates the full PBCH payload
   uint8_t  scs_common;//subcarrierSpacing for common, used for initial access and broadcast message. [38.211 sec 4.2] Value:0->3
 

nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface_scf.h

@@ -357,7 +357,7 @@ typedef struct
 //table 3-23
 typedef struct 
 {
-  nfapi_uint32_tlv_t ss_pbch_power;//SSB Block Power Value: TBD (-60..50 dBm)
+  nfapi_int32_tlv_t ss_pbch_power;//SSB Block Power Value: TBD (-60..50 dBm)
   nfapi_uint8_tlv_t  bch_payload;//Defines option selected for generation of BCH payload, see Table 3-13 (v0.0.011 Value: 0: MAC generates the full PBCH payload 1: PHY generates the timing PBCH bits 2: PHY generates the full PBCH payload
   nfapi_uint8_tlv_t  scs_common;//subcarrierSpacing for common, used for initial access and broadcast message. [38.211 sec 4.2] Value:0->3
 

openair1/PHY/NR_ESTIMATION/nr_measurements_gNB.c

@@ -20,12 +20,12 @@
  */
 
 /*! \file PHY/NR_ESTIMATION/nr_measurements_gNB.c
-* \brief TA estimation for TA updates
-* \author Ahmed Hussein
+* \brief gNB measurement routines
+* \author Ahmed Hussein, G. Casati, K. Saaifan
 * \date 2019
 * \version 0.1
 * \company Fraunhofer IIS
-* \email: ahmed.hussein@iis.fraunhofer.de
+* \email: ahmed.hussein@iis.fraunhofer.de, guido.casati@iis.fraunhofer.de, khodr.saaifan@iis.fraunhofer.de
 * \note
 * \warning
 */
@@ -35,6 +35,8 @@
 #include "PHY/phy_extern.h"
 #include "nr_ul_estimation.h"
 
+extern openair0_config_t openair0_cfg[MAX_CARDS];
+
 int nr_est_timing_advance_pusch(PHY_VARS_gNB* gNB, int UE_id)
 {
   int i, aa, max_pos = 0, max_val = 0;
@@ -73,14 +75,17 @@ void gNB_I0_measurements(PHY_VARS_gNB *gNB) {
   NR_DL_FRAME_PARMS *frame_parms = &gNB->frame_parms;
   NR_gNB_COMMON *common_vars = &gNB->common_vars;
   PHY_MEASUREMENTS_gNB *measurements = &gNB->measurements;
+  NR_DL_FRAME_PARMS *fp = &gNB->frame_parms;
+  double rx_gain = openair0_cfg[0].rx_gain[0];
+  double rx_gain_offset = openair0_cfg[0].rx_gain_offset[0];
   uint32_t *rb_mask = gNB->rb_mask_ul;
   int symbol = gNB->ulmask_symb;
   int rb, offset, nb_rb;
-  uint32_t n0_power_tot, n0_subband_power_temp=0;
+  uint32_t n0_subband_power_temp = 0;
   int32_t *ul_ch;
 
   if (symbol>-1) {
-    n0_power_tot = 0;
+    measurements->n0_power_tot = 0;
     for (int aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
       nb_rb = 0;
       for (rb=0; rb<frame_parms->N_RB_UL; rb++) {
@@ -93,11 +98,76 @@ void gNB_I0_measurements(PHY_VARS_gNB *gNB) {
           n0_subband_power_temp += signal_energy_nodc(ul_ch,12);
         }
       }
-      measurements->n0_power[aarx] = n0_subband_power_temp/nb_rb;
-      measurements->n0_power_dB[aarx] = dB_fixed(measurements->n0_power[aarx]);
-      n0_power_tot += measurements->n0_power[aarx];
+
+      if (nb_rb != 0) {
+        measurements->n0_power[aarx] = n0_subband_power_temp/nb_rb;
+        measurements->n0_power_dB[aarx] = dB_fixed(measurements->n0_power[aarx]);
+        measurements->n0_power_tot += measurements->n0_power[aarx];
+      }
+
     }
-    measurements->n0_power_tot_dB = dB_fixed(n0_power_tot);
+
+    measurements->n0_power_tot_dB = dB_fixed(measurements->n0_power_tot);
+    measurements->n0_power_tot_dBm = measurements->n0_power_tot_dB + 30 - 10 * log10(pow(2, 30)) - (rx_gain - rx_gain_offset) - dB_fixed(fp->ofdm_symbol_size);
+
+    LOG_D(PHY, "In %s: tot n0 power %d dBm for %d RBs (tot N0 power = %d)\n", __FUNCTION__, measurements->n0_power_tot_dBm, nb_rb, measurements->n0_power_tot);
+
   }
 }
 
+// Scope: This function computes the UL SNR from the UL channel estimates
+//
+// Todo:
+// - averaging IIR filter for RX power and noise
+void nr_gnb_measurements(PHY_VARS_gNB *gNB, uint8_t ulsch_id, unsigned char harq_pid, unsigned char symbol){
+
+  int rx_power_tot[NUMBER_OF_NR_ULSCH_MAX];
+  int rx_power[NUMBER_OF_NR_ULSCH_MAX][NB_ANTENNAS_RX];
+  unsigned short rx_power_avg_dB[NUMBER_OF_NR_ULSCH_MAX];
+  unsigned short rx_power_tot_dB[NUMBER_OF_NR_ULSCH_MAX];
+
+  double             rx_gain = openair0_cfg[0].rx_gain[0];
+  double      rx_gain_offset = openair0_cfg[0].rx_gain_offset[0];
+  PHY_MEASUREMENTS_gNB *meas = &gNB->measurements;
+  NR_DL_FRAME_PARMS      *fp = &gNB->frame_parms;
+  int              ch_offset = fp->ofdm_symbol_size * symbol;
+  int                N_RB_UL = gNB->ulsch[ulsch_id][0]->harq_processes[harq_pid]->ulsch_pdu.rb_size;
+
+  rx_power_tot[ulsch_id] = 0;
+
+  for (int aarx = 0; aarx < fp->nb_antennas_rx; aarx++){
+
+    rx_power[ulsch_id][aarx] = 0;
+
+    for (int aatx = 0; aatx < fp->nb_antennas_tx; aatx++){
+
+      meas->rx_spatial_power[ulsch_id][aatx][aarx] = (signal_energy_nodc(&gNB->pusch_vars[ulsch_id]->ul_ch_estimates[aarx][ch_offset], N_RB_UL * NR_NB_SC_PER_RB));
+
+      if (meas->rx_spatial_power[ulsch_id][aatx][aarx] < 0) {
+        meas->rx_spatial_power[ulsch_id][aatx][aarx] = 0;
+      }
+
+      meas->rx_spatial_power_dB[ulsch_id][aatx][aarx] = (unsigned short) dB_fixed(meas->rx_spatial_power[ulsch_id][aatx][aarx]);
+      rx_power[ulsch_id][aarx] += meas->rx_spatial_power[ulsch_id][aatx][aarx];
+
+    }
+
+    rx_power_tot[ulsch_id] += rx_power[ulsch_id][aarx];
+
+  }
+
+  rx_power_tot_dB[ulsch_id] = (unsigned short) dB_fixed(rx_power_tot[ulsch_id]);
+  rx_power_avg_dB[ulsch_id] = rx_power_tot_dB[ulsch_id];
+
+  meas->wideband_cqi_tot[ulsch_id] = dB_fixed2(rx_power_tot[ulsch_id], meas->n0_power_tot);
+  meas->rx_rssi_dBm[ulsch_id] = rx_power_avg_dB[ulsch_id] + 30 - 10 * log10(pow(2, 30)) - (rx_gain - rx_gain_offset) - dB_fixed(fp->ofdm_symbol_size);
+
+  LOG_D(PHY, "[ULSCH %d] RSSI %d dBm/RE, RSSI (digital) %d dB (N_RB_UL %d), WBand CQI tot %d dB, N0 Power tot %d\n",
+    ulsch_id,
+    meas->rx_rssi_dBm[ulsch_id],
+    rx_power_avg_dB[ulsch_id],
+    N_RB_UL,
+    meas->wideband_cqi_tot[ulsch_id],
+    meas->n0_power_tot);
+
+}

openair1/PHY/NR_ESTIMATION/nr_ul_estimation.h

@@ -49,8 +49,9 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
 
 void gNB_I0_measurements(PHY_VARS_gNB *gNB);
 
-int nr_est_timing_advance_pusch(PHY_VARS_gNB* phy_vars_gNB, int UE_id);
+void nr_gnb_measurements(PHY_VARS_gNB *gNB, uint8_t ulsch_id, unsigned char harq_pid, unsigned char symbol);
 
+int nr_est_timing_advance_pusch(PHY_VARS_gNB* phy_vars_gNB, int UE_id);
 
 void nr_pusch_ptrs_processing(PHY_VARS_gNB *gNB,
                               NR_DL_FRAME_PARMS *frame_parms,

openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c

@@ -1217,6 +1217,8 @@ int nr_rx_pusch(PHY_VARS_gNB *gNB,
                                 bwp_start_subcarrier,
                                 rel15_ul);
 
+    nr_gnb_measurements(gNB, ulsch_id, harq_pid, symbol);
+
     for (aarx = 0; aarx < frame_parms->nb_antennas_rx; aarx++) {
       gNB->pusch_vars[ulsch_id]->ulsch_power[aarx] = signal_energy_nodc(&gNB->pusch_vars[ulsch_id]->ul_ch_estimates[aarx][symbol*frame_parms->ofdm_symbol_size],
                                                                         rel15_ul->rb_size*12);

openair1/PHY/NR_UE_ESTIMATION/nr_ue_measurements.c

@@ -21,16 +21,17 @@
 
 /*! \file nr_ue_measurements.c
  * \brief UE measurements routines
- * \author  R. Knopp, G. Casati
+ * \author  R. Knopp, G. Casati, K. Saaifan
  * \date 2020
  * \version 0.1
  * \company Eurecom, Fraunhofer IIS
- * \email: knopp@eurecom.fr, guido.casati@iis.fraunhofer.de
+ * \email: knopp@eurecom.fr, guido.casati@iis.fraunhofer.de, khodr.saaifan@iis.fraunhofer.de
  * \note
  * \warning
  */
 
 #include "executables/softmodem-common.h"
+#include "executables/nr-softmodem-common.h"
 #include "PHY/defs_nr_UE.h"
 #include "PHY/phy_extern_nr_ue.h"
 #include "common/utils/LOG/log.h"
@@ -45,7 +46,7 @@
 //#define DEBUG_MEAS_UE
 //#define DEBUG_RANK_EST
 
-// Returns the pathloss in dBm for the active UL BWP on the selected carrier based on the DL RS associated with the PRACH transmission
+// Returns the pathloss in dB for the active UL BWP on the selected carrier based on the DL RS associated with the PRACH transmission
 // computation according to clause 7.4 (Physical random access channel) of 3GPP TS 38.213 version 16.3.0 Release 16
 // Assumptions:
 // - PRACH transmission from a UE is not in response to a detection of a PDCCH order by the UE
@@ -59,18 +60,17 @@ int16_t get_nr_PL(uint8_t Mod_id, uint8_t CC_id, uint8_t gNB_index){
   if (get_softmodem_params()->do_ra){
 
     long referenceSignalPower = ue->nrUE_config.ssb_config.ss_pbch_power;
-    double rsrp_dBm = 10*log10(ue->measurements.rsrp[gNB_index]) + 30 - ue->rx_total_gain_dB;
 
-    pathloss = (int16_t)(10*log10(pow(10, (double)(referenceSignalPower)/10) - pow(10, (double)(rsrp_dBm)/10)));
+    pathloss = (int16_t)(referenceSignalPower - ue->measurements.rsrp_dBm[gNB_index]);
 
-    LOG_D(MAC, "In %s: pathloss %d dBm, UE RX total gain %d dB, referenceSignalPower %ld dBm (%f mW), RSRP %f dBm (%f mW)\n",
+    LOG_D(MAC, "In %s: pathloss %d dB, UE RX total gain %d dB, referenceSignalPower %ld dBm/RE (%f mW), RSRP %d dBm (%f mW)\n",
       __FUNCTION__,
       pathloss,
       ue->rx_total_gain_dB,
       referenceSignalPower,
       pow(10, referenceSignalPower/10),
-      rsrp_dBm,
-      pow(10, rsrp_dBm/10));
+      ue->measurements.rsrp_dBm[gNB_index],
+      pow(10, ue->measurements.rsrp_dBm[gNB_index]/10));
 
   } else {
 
@@ -178,9 +178,9 @@ void nr_ue_measurements(PHY_VARS_NR_UE *ue,
     ue->measurements.rx_power_avg_dB[gNB_id] = dB_fixed( ue->measurements.rx_power_avg[gNB_id]);
     ue->measurements.wideband_cqi_tot[gNB_id] = dB_fixed2(ue->measurements.rx_power_tot[gNB_id], ue->measurements.n0_power_tot);
     ue->measurements.wideband_cqi_avg[gNB_id] = dB_fixed2(ue->measurements.rx_power_avg[gNB_id], ue->measurements.n0_power_avg);
-    ue->measurements.rx_rssi_dBm[gNB_id] = ue->measurements.rx_power_avg_dB[gNB_id] - ue->rx_total_gain_dB;
+    ue->measurements.rx_rssi_dBm[gNB_id] = ue->measurements.rx_power_avg_dB[gNB_id] + 30 - 10*log10(pow(2, 30)) - ((int)openair0_cfg[0].rx_gain[0] - (int)openair0_cfg[0].rx_gain_offset[0]) - dB_fixed(ue->frame_parms.ofdm_symbol_size);
 
-    LOG_D(PHY, "[gNB %d] Slot %d, RSSI %d dBm, RSSI (digital) %d dB, WBandCQI %d dB, rxPwrAvg %d, n0PwrAvg %d\n",
+    LOG_I(PHY, "[gNB %d] Slot %d, RSSI %d dBm/RE, RSSI (digital) %d dB, WBandCQI %d dB, rxPwrAvg %d, n0PwrAvg %d \n",
       gNB_id,
       slot,
       ue->measurements.rx_rssi_dBm[gNB_id],
@@ -258,15 +258,20 @@ void nr_ue_rsrp_measurements(PHY_VARS_NR_UE *ue,
 
   ue->measurements.rsrp_filtered[gNB_id] = ue->measurements.rsrp[gNB_id];
 
-  LOG_D(PHY, "In %s: [UE %d] slot %d SS-RSRP: %3.1f dBm/RE (%d W)\n",
+  ue->measurements.rsrp_dBm[gNB_id] = 10*log10(ue->measurements.rsrp[gNB_id]) + 30 - 10*log10(pow(2,30)) - ((int)openair0_cfg[0].rx_gain[0] - (int)openair0_cfg[0].rx_gain_offset[0]) - dB_fixed(ue->frame_parms.ofdm_symbol_size);
+
+  LOG_D(PHY, "In %s: [UE %d] slot %d SS-RSRP: %d dBm/RE (%d)\n",
     __FUNCTION__,
     ue->Mod_id,
     slot,
-    10*log10(ue->measurements.rsrp[gNB_id]) + 30 - ue->rx_total_gain_dB,
+    ue->measurements.rsrp_dBm[gNB_id],
     ue->measurements.rsrp[gNB_id]);
 
 }
 
+// This function computes the received noise power
+// Measurement units:
+// - psd_awgn (AWGN power spectral density):     dBm/Hz
 void nr_ue_rrc_measurements(PHY_VARS_NR_UE *ue,
                             UE_nr_rxtx_proc_t *proc,
                             uint8_t slot){
@@ -279,6 +284,9 @@ void nr_ue_rrc_measurements(PHY_VARS_NR_UE *ue,
   uint8_t k_length = 8;
   uint8_t l_sss = ue->symbol_offset + 2;
   unsigned int ssb_offset = ue->frame_parms.first_carrier_offset + ue->frame_parms.ssb_start_subcarrier;
+  double rx_gain = openair0_cfg[0].rx_gain[0];
+  double rx_gain_offset = openair0_cfg[0].rx_gain_offset[0];
+
   ue->measurements.n0_power_tot = 0;
 
   LOG_D(PHY, "In %s doing measurements for ssb_offset %d l_sss %d \n", __FUNCTION__, ssb_offset, l_sss);
@@ -322,10 +330,17 @@ void nr_ue_rrc_measurements(PHY_VARS_NR_UE *ue,
   ue->measurements.n0_power_tot_dB = (unsigned short) dB_fixed(ue->measurements.n0_power_tot/aarx);
 
   #ifdef DEBUG_MEAS_RRC
-  int nf_usrp = ue->measurements.n0_power_tot_dB + 30 - ((int)openair0_cfg[0].rx_gain[0] - (int)openair0_cfg[0].rx_gain_offset[0]) - 90 - (-174 + dB_fixed(30000/*scs*/) + dB_fixed(ue->frame_parms.ofdm_symbol_size));
-  LOG_D(PHY, "In %s slot %d NF USRP %d dBm\n", __FUNCTION__, nf_usrp);
+  const int psd_awgn = -174;
+  const int scs = 15000 * (1 << ue->frame_parms.numerology_index);
+  const int nf_usrp = ue->measurements.n0_power_tot_dB + 3 + 30 - ((int)rx_gain - (int)rx_gain_offset) - 10 * log10(pow(2, 30)) - (psd_awgn + dB_fixed(scs) + dB_fixed(ue->frame_parms.ofdm_symbol_size));
+  LOG_D(PHY, "In [%s][slot:%d] NF USRP %d dB\n", __FUNCTION__, slot, nf_usrp);
   #endif
 
-  LOG_D(PHY, "In %s slot %d Noise Level %d ue->measurements.n0_power_tot_dB %d \n", __FUNCTION__, slot, ue->measurements.n0_power_tot, ue->measurements.n0_power_tot_dB);
+  LOG_D(PHY, "In [%s][slot:%d] Noise Level %d (digital level %d dB, noise power spectral density %f dBm/RE)\n",
+    __FUNCTION__,
+    slot,
+    ue->measurements.n0_power_tot,
+    ue->measurements.n0_power_tot_dB,
+    ue->measurements.n0_power_tot_dB + 30 - 10*log10(pow(2, 30)) - dB_fixed(ue->frame_parms.ofdm_symbol_size) - ((int)rx_gain - (int)rx_gain_offset));
 
 }

openair1/PHY/defs_nr_UE.h

@@ -142,6 +142,7 @@ typedef struct {
   uint32_t rsrp[7];
   float rsrp_filtered[7]; // after layer 3 filtering
   float rsrq_filtered[7];
+  short rsrp_dBm[7];
   // common measurements
   //! estimated noise power (linear)
   unsigned int   n0_power[NB_ANTENNAS_RX];

openair1/SCHED_NR_UE/phy_procedures_nr_ue.c

@@ -2072,10 +2072,10 @@ void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
 
     if (ue->mac_enabled == 1) {
       int16_t pathloss = get_nr_PL(mod_id, ue->CC_id, gNB_id);
-      int16_t ra_preamble_rx_power = (int16_t)(10*log10(pow(10, (double)(prach_resources->ra_PREAMBLE_RECEIVED_TARGET_POWER)/10) + pow(10, (double)(pathloss)/10)));
+      int16_t ra_preamble_rx_power = (int16_t)(prach_resources->ra_PREAMBLE_RECEIVED_TARGET_POWER - pathloss + 30);
       ue->tx_power_dBm[nr_slot_tx] = min(nr_get_Pcmax(mod_id), ra_preamble_rx_power);
 
-      LOG_I(PHY,"[UE %d][RAPROC][%d.%d]: Generating PRACH Msg1 (preamble %d, PL %d, P0_PRACH %d, TARGET_RECEIVED_POWER %d dBm, RA-RNTI %x)\n",
+      LOG_I(PHY,"DEBUG [UE %d][RAPROC][%d.%d]: Generating PRACH Msg1 (preamble %d, PL %d dB, P0_PRACH %d, TARGET_RECEIVED_POWER %d dBm, RA-RNTI %x)\n",
         mod_id,
         frame_tx,
         nr_slot_tx,

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

@@ -188,7 +188,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band257.tm1.66PRB.usrpn300.conf

@@ -177,7 +177,7 @@ gNBs =
       nrofUplinkSlots                                               = 10;
       nrofUplinkSymbols                                             = 0;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

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

@@ -188,7 +188,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band66.tm1.106PRB.usrpn300.conf

@@ -186,7 +186,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band66.tm1.106PRB.usrpx300.conf

@@ -186,7 +186,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.106PRB.30kHz,usrpb2x0.conf

@@ -177,7 +177,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.PTRS.usrpx300.conf

@@ -186,7 +186,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-      ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpb210.conf

@@ -177,7 +177,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpn300.conf

@@ -187,7 +187,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpx300.conf

@@ -187,7 +187,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;  // -25 dBm/RE is the maximum measured power from USRP corresponding to att_tx = 0 dB
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.217PRB.usrpn300.conf

@@ -187,7 +187,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.217PRB.usrpx300.conf

@@ -182,7 +182,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.24PRB.usrpb210.conf

@@ -187,7 +187,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.24PRB.usrpn300.conf

@@ -187,7 +187,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.24PRB.usrpx300.conf

@@ -187,7 +187,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.273PRB.usrpn300.conf

@@ -187,7 +187,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+      ssPBCH_BlockPower                                             = -25;
   }
 
   );