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openairinterface5g/openair1/PHY/NR_UE_ESTIMATION/nr_ue_measurements.c
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luis_pereira87 8b113b002b Remove/refactor LOGs
2021-04-20 17:37:32 +01:00

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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file nr_ue_measurements.c
* \brief UE measurements routines
* \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, 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"
#include "PHY/sse_intrin.h"
#include "openair2/LAYER2/NR_MAC_UE/mac_proto.h"
//#define k1 1000
#define k1 ((long long int) 1000)
#define k2 ((long long int) (1024-k1))
//#define DEBUG_MEAS_RRC
//#define DEBUG_MEAS_UE
//#define DEBUG_RANK_EST
// 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
// Measurement units:
// - referenceSignalPower: dBm/RE (average EPRE of the resources elements that carry secondary synchronization signals in dBm)
int16_t get_nr_PL(uint8_t Mod_id, uint8_t CC_id, uint8_t gNB_index){
PHY_VARS_NR_UE *ue = PHY_vars_UE_g[Mod_id][CC_id];
int16_t pathloss;
if (get_softmodem_params()->do_ra){
long referenceSignalPower = ue->nrUE_config.ssb_config.ss_pbch_power;
pathloss = (int16_t)(referenceSignalPower - ue->measurements.rsrp_dBm[gNB_index]);
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),
ue->measurements.rsrp_dBm[gNB_index],
pow(10, ue->measurements.rsrp_dBm[gNB_index]/10));
} else {
pathloss = ((int16_t)(((10*ue->rx_total_gain_dB) - dB_fixed_times10(ue->measurements.rsrp[gNB_index]))/10));
}
return pathloss;
}
uint32_t get_nr_rx_total_gain_dB (module_id_t Mod_id,uint8_t CC_id)
{
PHY_VARS_NR_UE *ue = PHY_vars_UE_g[Mod_id][CC_id];
if (ue)
return ue->rx_total_gain_dB;
return 0xFFFFFFFF;
}
float_t get_nr_RSRP(module_id_t Mod_id,uint8_t CC_id,uint8_t gNB_index)
{
AssertFatal(PHY_vars_UE_g!=NULL,"PHY_vars_UE_g is null\n");
AssertFatal(PHY_vars_UE_g[Mod_id]!=NULL,"PHY_vars_UE_g[%d] is null\n",Mod_id);
AssertFatal(PHY_vars_UE_g[Mod_id][CC_id]!=NULL,"PHY_vars_UE_g[%d][%d] is null\n",Mod_id,CC_id);
PHY_VARS_NR_UE *ue = PHY_vars_UE_g[Mod_id][CC_id];
if (ue)
return (10*log10(ue->measurements.rsrp[gNB_index])-
get_nr_rx_total_gain_dB(Mod_id,0) -
10*log10(20*12));
return -140.0;
}
void nr_ue_measurements(PHY_VARS_NR_UE *ue,
UE_nr_rxtx_proc_t *proc,
uint8_t slot)
{
int aarx, aatx, gNB_id = 0;
NR_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
int ch_offset = frame_parms->ofdm_symbol_size*2;
NR_UE_DLSCH_t *dlsch = ue->dlsch[proc->thread_id][gNB_id][0];
uint8_t harq_pid = dlsch->current_harq_pid;
int N_RB_DL = dlsch->harq_processes[harq_pid]->nb_rb;
ue->measurements.nb_antennas_rx = frame_parms->nb_antennas_rx;
// signal measurements
for (gNB_id = 0; gNB_id < ue->n_connected_gNB; gNB_id++){
ue->measurements.rx_power_tot[gNB_id] = 0;
for (aarx = 0; aarx < frame_parms->nb_antennas_rx; aarx++){
ue->measurements.rx_power[gNB_id][aarx] = 0;
for (aatx = 0; aatx < frame_parms->nb_antenna_ports_gNB; aatx++){
ue->measurements.rx_spatial_power[gNB_id][aatx][aarx] = (signal_energy_nodc(&ue->pdsch_vars[proc->thread_id][0]->dl_ch_estimates[gNB_id][ch_offset], N_RB_DL*NR_NB_SC_PER_RB));
if (ue->measurements.rx_spatial_power[gNB_id][aatx][aarx]<0)
ue->measurements.rx_spatial_power[gNB_id][aatx][aarx] = 0;
ue->measurements.rx_spatial_power_dB[gNB_id][aatx][aarx] = (unsigned short) dB_fixed(ue->measurements.rx_spatial_power[gNB_id][aatx][aarx]);
ue->measurements.rx_power[gNB_id][aarx] += ue->measurements.rx_spatial_power[gNB_id][aatx][aarx];
}
ue->measurements.rx_power_dB[gNB_id][aarx] = (unsigned short) dB_fixed(ue->measurements.rx_power[gNB_id][aarx]);
ue->measurements.rx_power_tot[gNB_id] += ue->measurements.rx_power[gNB_id][aarx];
}
ue->measurements.rx_power_tot_dB[gNB_id] = (unsigned short) dB_fixed(ue->measurements.rx_power_tot[gNB_id]);
}
// filter to remove jitter
if (ue->init_averaging == 0) {
for (gNB_id = 0; gNB_id < ue->n_connected_gNB; gNB_id++)
ue->measurements.rx_power_avg[gNB_id] = (int)(((k1*((long long int)(ue->measurements.rx_power_avg[gNB_id]))) + (k2*((long long int)(ue->measurements.rx_power_tot[gNB_id])))) >> 10);
ue->measurements.n0_power_avg = (int)(((k1*((long long int) (ue->measurements.n0_power_avg))) + (k2*((long long int) (ue->measurements.n0_power_tot))))>>10);
LOG_D(PHY, "Noise Power Computation: k1 %lld k2 %lld n0 avg %u n0 tot %u\n", k1, k2, ue->measurements.n0_power_avg, ue->measurements.n0_power_tot);
} else {
for (gNB_id = 0; gNB_id < ue->n_connected_gNB; gNB_id++)
ue->measurements.rx_power_avg[gNB_id] = ue->measurements.rx_power_tot[gNB_id];
ue->measurements.n0_power_avg = ue->measurements.n0_power_tot;
ue->init_averaging = 0;
}
for (gNB_id = 0; gNB_id < ue->n_connected_gNB; gNB_id++) {
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] + 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 dB (%d dBm/RE), WBandCQI %d dB, rxPwrAvg %d, n0PwrAvg %d\n",
gNB_id,
slot,
ue->measurements.rx_power_avg_dB[gNB_id],
ue->measurements.rx_rssi_dBm[gNB_id],
ue->measurements.wideband_cqi_avg[gNB_id],
ue->measurements.rx_power_avg[gNB_id],
ue->measurements.n0_power_tot);
}
#if defined(__x86_64__) || defined(__i386__)
_mm_empty();
_m_empty();
#endif
}
// This function implements:
// - SS reference signal received power (SS-RSRP) as per clause 5.1.1 of 3GPP TS 38.215 version 16.3.0 Release 16
// - no Layer 3 filtering implemented (no filterCoefficient provided from RRC)
// Todo:
// - Layer 3 filtering according to clause 5.5.3.2 of 3GPP TS 38.331 version 16.2.0 Release 16
// Measurement units:
// - RSRP: W (dBW)
// - RX Gain dB
void nr_ue_rsrp_measurements(PHY_VARS_NR_UE *ue,
uint8_t gNB_id,
UE_nr_rxtx_proc_t *proc,
uint8_t slot,
uint8_t abstraction_flag)
{
int aarx;
int nb_re;
int k_start = 55;
int k_end = 183;
unsigned int ssb_offset = ue->frame_parms.first_carrier_offset + ue->frame_parms.ssb_start_subcarrier;
uint8_t l_sss = ue->symbol_offset + 2;
if (ssb_offset>= ue->frame_parms.ofdm_symbol_size){
ssb_offset -= ue->frame_parms.ofdm_symbol_size;
}
ue->measurements.rsrp[gNB_id] = 0;
if (abstraction_flag == 0) {
LOG_D(PHY, "In %s: [UE %d] slot %d l_sss %d ssb_offset %d\n", __FUNCTION__, ue->Mod_id, slot, l_sss, ssb_offset);
nb_re = 0;
for (aarx = 0; aarx < ue->frame_parms.nb_antennas_rx; aarx++) {
int16_t *rxF_sss = (int16_t *)&ue->common_vars.common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aarx][(l_sss*ue->frame_parms.ofdm_symbol_size) + ssb_offset];
for(int k = k_start; k < k_end; k++){
#ifdef DEBUG_MEAS_UE
LOG_I(PHY, "In %s rxF_sss %d %d\n", __FUNCTION__, rxF_sss[k*2], rxF_sss[k*2 + 1]);
#endif
ue->measurements.rsrp[gNB_id] += (((int32_t)rxF_sss[k*2]*rxF_sss[k*2]) + ((int32_t)rxF_sss[k*2 + 1]*rxF_sss[k*2 + 1]));
nb_re++;
}
}
ue->measurements.rsrp[gNB_id] /= nb_re;
} else {
ue->measurements.rsrp[gNB_id] = -93;
}
ue->measurements.rsrp_filtered[gNB_id] = ue->measurements.rsrp[gNB_id];
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,
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){
uint8_t k;
int aarx, nb_nulls;
int16_t *rxF_sss;
uint8_t k_left = 48;
uint8_t k_right = 183;
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);
for (aarx = 0; aarx<ue->frame_parms.nb_antennas_rx; aarx++) {
nb_nulls = 0;
ue->measurements.n0_power[aarx] = 0;
rxF_sss = (int16_t *)&ue->common_vars.common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aarx][(l_sss*ue->frame_parms.ofdm_symbol_size) + ssb_offset];
//-ve spectrum from SSS
for(k = k_left; k < k_left + k_length; k++){
#ifdef DEBUG_MEAS_RRC
LOG_I(PHY, "In %s -rxF_sss %d %d\n", __FUNCTION__, rxF_sss[k*2], rxF_sss[k*2 + 1]);
#endif
ue->measurements.n0_power[aarx] += (((int32_t)rxF_sss[k*2]*rxF_sss[k*2]) + ((int32_t)rxF_sss[k*2 + 1]*rxF_sss[k*2 + 1]));
nb_nulls++;
}
//+ve spectrum from SSS
for(k = k_right; k < k_right + k_length; k++){
#ifdef DEBUG_MEAS_RRC
LOG_I(PHY, "In %s +rxF_sss %d %d\n", __FUNCTION__, rxF_sss[k*2], rxF_sss[k*2 + 1]);
#endif
ue->measurements.n0_power[aarx] += (((int32_t)rxF_sss[k*2]*rxF_sss[k*2]) + ((int32_t)rxF_sss[k*2 + 1]*rxF_sss[k*2 + 1]));
nb_nulls++;
}
ue->measurements.n0_power[aarx] /= nb_nulls;
ue->measurements.n0_power_dB[aarx] = (unsigned short) dB_fixed(ue->measurements.n0_power[aarx]);
ue->measurements.n0_power_tot += ue->measurements.n0_power[aarx];
}
ue->measurements.n0_power_tot_dB = (unsigned short) dB_fixed(ue->measurements.n0_power_tot/aarx);
#ifdef DEBUG_MEAS_RRC
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 (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));
}
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