remove unused ulsch measurements at gNB

openair1/PHY/NR_ESTIMATION/nr_measurements_gNB.c

@@ -188,74 +188,3 @@ void gNB_I0_measurements(PHY_VARS_gNB *gNB, int slot, int first_symb, int num_sy
      }
   }
 }
-
-// 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,
-                         NR_gNB_ULSCH_t *ulsch,
-                         NR_gNB_PUSCH *pusch_vars,
-                         unsigned char symbol,
-                         uint8_t nrOfLayers)
-{
-  uint32_t rx_power_tot = 0;
-  unsigned short rx_power_avg_dB;
-  unsigned short rx_power_tot_dB;
-  RU_t *ru = gNB->RU_list[0];
-  double rx_gain, rx_gain_offset;
-  if (ru && ru->rfdevice.openair0_cfg) {
-    rx_gain = ru->rfdevice.openair0_cfg->rx_gain[0];
-    rx_gain_offset = ru->rfdevice.openair0_cfg->rx_gain_offset[0];
-  } else if (ru && ru->ifdevice.openair0_cfg) {
-    rx_gain = ru->ifdevice.openair0_cfg->rx_gain[0];
-    rx_gain_offset = ru->ifdevice.openair0_cfg->rx_gain_offset[0];
-  } else {
-    LOG_W(NR_PHY, "no device for rx gain, take arbitrary gain = 1)\n");
-    rx_gain = 1;
-    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 = ulsch->harq_process->ulsch_pdu.rb_size;
-  ulsch_measurements_gNB *ulsch_measurements = &ulsch->ulsch_measurements;
-
-  int rx_power[fp->nb_antennas_rx];
-  int rx_spatial_power[nrOfLayers][fp->nb_antennas_rx];
-  for (int aarx = 0; aarx < fp->nb_antennas_rx; aarx++){
-    rx_power[aarx] = 0;
-
-    for (int aatx = 0; aatx < nrOfLayers; aatx++){
-      rx_spatial_power[aatx][aarx] =
-          (signal_energy_nodc((c16_t*)&pusch_vars->ul_ch_estimates[aatx * fp->nb_antennas_rx + aarx][ch_offset],
-                              N_RB_UL * NR_NB_SC_PER_RB));
-
-      if (rx_spatial_power[aatx][aarx] < 0) {
-        rx_spatial_power[aatx][aarx] = 0;
-      }
-
-      rx_power[aarx] += rx_spatial_power[aatx][aarx];
-    }
-    LOG_D(PHY, "[RNTI %04x] RX power in antenna %d = %d\n", ulsch->rnti, aarx, rx_power[aarx]);
-
-    rx_power_tot += rx_power[aarx];
-  }
-
-  rx_power_tot_dB = (unsigned short)dB_fixed(rx_power_tot);
-  rx_power_avg_dB = rx_power_tot_dB;
-
-  ulsch_measurements->wideband_cqi_tot = dB_fixed2(rx_power_tot, meas->n0_power_tot);
-  ulsch_measurements->rx_rssi_dBm =
-      rx_power_avg_dB + 30 - SQ15_SQUARED_NORM_FACTOR_DB - (rx_gain - rx_gain_offset) - dB_fixed(fp->ofdm_symbol_size);
-
-  LOG_D(PHY,
-        "[RNTI %04x] RSSI %d dBm/RE, RSSI (digital) %d dB (N_RB_UL %d), WBand CQI tot %d dB, N0 Power tot %d, RX Power tot %d\n",
-        ulsch->rnti,
-        ulsch_measurements->rx_rssi_dBm,
-        rx_power_avg_dB,
-        N_RB_UL,
-        ulsch_measurements->wideband_cqi_tot,
-        meas->n0_power_tot,
-        rx_power_tot);
-}

openair1/PHY/NR_ESTIMATION/nr_ul_estimation.h

@@ -59,12 +59,6 @@ void dump_nr_I0_stats(FILE *fd,PHY_VARS_gNB *gNB);
 
 void gNB_I0_measurements(PHY_VARS_gNB *gNB, int slot, int first_symb, int num_symb, uint32_t rb_mask_ul[14][9]);
 
-void nr_gnb_measurements(PHY_VARS_gNB *gNB,
-                         NR_gNB_ULSCH_t *ulsch,
-                         NR_gNB_PUSCH *pusch_vars,
-                         unsigned char symbol,
-                         uint8_t nrOfLayers);
-
 int nr_est_timing_advance_srs(const NR_DL_FRAME_PARMS *frame_parms,
                               const c16_t srs_estimated_channel_time[][frame_parms->ofdm_symbol_size]);
 

openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c

@@ -1188,12 +1188,7 @@ int nr_rx_pusch_tp(PHY_VARS_gNB *gNB,
                                     pusch_ch_est_dmrs_pos_slot_mem);
         nvar += nvar_tmp;
       }
-      // measure the SNR from the channel estimation
-      nr_gnb_measurements(gNB, 
-                          &gNB->ulsch[ulsch_id],
-                          pusch_vars,
-                          symbol,
-                          rel15_ul->nrOfLayers);
+
       allocCast2D(n0_subband_power,
                   unsigned int,
                   gNB->measurements.n0_subband_power,

openair1/PHY/defs_gNB.h

@@ -215,13 +215,6 @@ static inline int crcType(int nbSeg, int len)
   return len > NR_MAX_PDSCH_TBS ? CRC24_A : CRC16;
 }
 
-typedef struct {
-  //! estimated rssi (dBm)
-  int rx_rssi_dBm;
-  /// Wideband CQI (sum of all RX antennas, in dB)
-  char wideband_cqi_tot;
-} ulsch_measurements_gNB;
-
 typedef struct {
   uint32_t frame;
   uint32_t slot;
@@ -243,7 +236,6 @@ typedef struct {
   /// Flag to indicate that the UL configuration has been handled. Used to remove a stale ULSCH when frame wraps around
   uint8_t handled;
   delay_t delay;
-  ulsch_measurements_gNB ulsch_measurements;
 } NR_gNB_ULSCH_t;
 
 typedef struct {