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Merge remote-tracking branch 'origin/nr_ue_multiple_rf' into integration_2026_w05 (!3593)

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NR UE: add support for multiple RF frontends

This MR adds basic support for multiple RF-frontends at the UE.
There are multiple reasons why we might want this:
1. There might be different antennas needed for different bands (e.g. NTN or
   TN antennas). These antennas might be connected to different RF-frontends.
   In case of Handover, the UE needs to dynamically switch between these
   RF-frontends.
2. Each rf-simulator connection carries baseband I/Q samples. To be able to
   perform a handover between two cells at different frequencies, there must
   be two rf-simulator connections, as the baseband channels should not
   interfere and thus cannot simply be added.
3. When we want to support multiple UE simulation within one instance of
   nr-uesoftmodem, and allow multiple cells and probably even handover between
   these cells, we need either:
   1. dedicated RF-frontends for each simulated UE, or
   2. dedicated RF-frontends for each connected cell and dynamically assign
      simulated UEs accordingly.

This MR implements what is needed for 1., 2. and 3.1.
This commit is contained in:
Jaroslava Fiedlerova
2026-01-28 20:19:48 +01:00
parent db902afbe4 fce8185467
commit e1a327ca4f
153 changed files with 1993 additions and 1082 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
+7 -4
View File
@@ -46,6 +46,8 @@
#define CH_INTERP 0
#define NO_INTERP 1
extern openair0_config_t openair0_cfg[MAX_CARDS];
/* Generic function to find the peak of channel estimation buffer */
void peak_estimator(c16_t *buffer, int32_t buf_len, int32_t *peak_idx, int32_t *peak_val, int32_t mean_val)
{
@@ -461,12 +463,13 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
// adjusting the rx_gains for channel peak power
ch_pwr_dbm = 10 * log10(ch_pwr) + 30 - SQ15_SQUARED_NORM_FACTOR_DB
- ((int)ue->openair0_cfg[0].rx_gain[0] - (int)ue->openair0_cfg[0].rx_gain_offset[0])
- ((int)openair0_cfg[ue->rf_map.card].rx_gain[0] - (int)openair0_cfg[ue->rf_map.card].rx_gain_offset[0])
- dB_fixed(frame_params->ofdm_symbol_size);
prs_meas[rxAnt]->rsrp_dBm = 10 * log10(prs_meas[rxAnt]->rsrp) + 30 - SQ15_SQUARED_NORM_FACTOR_DB
- ((int)ue->openair0_cfg[0].rx_gain[0] - (int)ue->openair0_cfg[0].rx_gain_offset[0])
- dB_fixed(ue->frame_parms.ofdm_symbol_size);
prs_meas[rxAnt]->rsrp_dBm =
10 * log10(prs_meas[rxAnt]->rsrp) + 30 - SQ15_SQUARED_NORM_FACTOR_DB
- ((int)openair0_cfg[ue->rf_map.card].rx_gain[0] - (int)openair0_cfg[ue->rf_map.card].rx_gain_offset[0])
- dB_fixed(ue->frame_parms.ofdm_symbol_size);
// prs measurements
prs_meas[rxAnt]->gNB_id = gNB_id;
openair1/PHY/NR_UE_ESTIMATION/nr_estimation.h
+3 -3
View File
@@ -154,10 +154,10 @@ void nr_pdsch_ptrs_processing(PHY_VARS_NR_UE *ue,
uint16_t rnti,
NR_UE_DLSCH_t dlsch[2]);
int nr_sl_psbch_rsrp_measurements(sl_nr_ue_phy_params_t *sl_phy_params,
int nr_sl_psbch_rsrp_measurements(PHY_VARS_NR_UE *ue,
sl_nr_ue_phy_params_t *sl_phy_params,
NR_DL_FRAME_PARMS *fp,
c16_t rxdataF[][fp->samples_per_slot_wCP],
bool use_SSS,
openair0_config_t *openair0_cfg);
bool use_SSS);
/** @}*/
#endif
openair1/PHY/NR_UE_ESTIMATION/nr_ue_measurements.c
+20 -15
View File
@@ -51,6 +51,8 @@
//#define DEBUG_MEAS_UE
//#define DEBUG_RANK_EST
extern openair0_config_t openair0_cfg[MAX_CARDS];
void nr_ue_measurements(PHY_VARS_NR_UE *ue,
const UE_nr_rxtx_proc_t *proc,
int number_rbs,
@@ -133,9 +135,10 @@ void nr_ue_measurements(PHY_VARS_NR_UE *ue,
ue->measurements.n0_power_avg_dB = dB_fixed(ue->measurements.n0_power_avg);
ue->measurements.wideband_cqi_tot[gNB_id] = ue->measurements.rx_power_tot_dB[gNB_id] - ue->measurements.n0_power_tot_dB;
ue->measurements.wideband_cqi_avg[gNB_id] = ue->measurements.rx_power_avg_dB[gNB_id] - ue->measurements.n0_power_avg_dB;
ue->measurements.rx_rssi_dBm[gNB_id] = ue->measurements.rx_power_avg_dB[gNB_id] + 30 - SQ15_SQUARED_NORM_FACTOR_DB
- ((int)ue->openair0_cfg[0].rx_gain[0] - (int)ue->openair0_cfg[0].rx_gain_offset[0])
- dB_fixed(ue->frame_parms.ofdm_symbol_size);
ue->measurements.rx_rssi_dBm[gNB_id] =
ue->measurements.rx_power_avg_dB[gNB_id] + 30 - SQ15_SQUARED_NORM_FACTOR_DB
- ((int)openair0_cfg[ue->rf_map.card].rx_gain[0] - (int)openair0_cfg[ue->rf_map.card].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,
@@ -242,7 +245,7 @@ void nr_ue_ssb_rsrp_measurements(PHY_VARS_NR_UE *ue,
uint32_t rsrp_avg = nr_ue_calculate_ssb_rsrp(fp, proc, rxdataF, symbol_offset, fp->ssb_start_subcarrier);
float rsrp_db_per_re = 10 * log10(rsrp_avg);
openair0_config_t *cfg0 = &ue->openair0_cfg[0];
openair0_config_t *cfg0 = &openair0_cfg[ue->rf_map.card];
if (rsrp_avg == 0)
ue->measurements.ssb_rsrp_dBm[ssb_index] = -200; // lower than any value to be reported per Table 10.1.6.1-1 of 38.133
@@ -488,9 +491,10 @@ void do_neighboring_cell_measurements(UE_nr_rxtx_proc_t *proc, PHY_VARS_NR_UE *u
// RSRP measurements
neighboring_cell_info->ssb_rsrp = nr_ue_calculate_ssb_rsrp(frame_parms, proc, rxdataF, 0, frame_parms->ssb_start_subcarrier);
neighboring_cell_info->ssb_rsrp_dBm = 10 * log10(neighboring_cell_info->ssb_rsrp) + 30 - SQ15_SQUARED_NORM_FACTOR_DB
- ((int)ue->openair0_cfg[0].rx_gain[0] - (int)ue->openair0_cfg[0].rx_gain_offset[0])
- dB_fixed(ue->frame_parms.ofdm_symbol_size);
neighboring_cell_info->ssb_rsrp_dBm =
10 * log10(neighboring_cell_info->ssb_rsrp) + 30 - SQ15_SQUARED_NORM_FACTOR_DB
- ((int)openair0_cfg[ue->rf_map.card].rx_gain[0] - (int)openair0_cfg[ue->rf_map.card].rx_gain_offset[0])
- dB_fixed(ue->frame_parms.ofdm_symbol_size);
// Send SS measurements to MAC
send_ssb_rsrp_meas(ue, proc, neighbor_cell->Nid_cell, neighboring_cell_info->ssb_rsrp_dBm, true, -1, 0.0);
@@ -522,8 +526,8 @@ void nr_ue_rrc_measurements(PHY_VARS_NR_UE *ue,
const uint8_t k_length = 8;
uint8_t l_sss = (ue->symbol_offset + 2) % ue->frame_parms.symbols_per_slot;
unsigned int ssb_offset = ue->frame_parms.first_carrier_offset + ue->frame_parms.ssb_start_subcarrier;
double rx_gain = ue->openair0_cfg[0].rx_gain[0];
double rx_gain_offset = ue->openair0_cfg[0].rx_gain_offset[0];
double rx_gain = openair0_cfg[ue->rf_map.card].rx_gain[0];
double rx_gain_offset = openair0_cfg[ue->rf_map.card].rx_gain_offset[0];
ue->measurements.n0_power_tot = 0;
@@ -592,11 +596,11 @@ void nr_ue_rrc_measurements(PHY_VARS_NR_UE *ue,
// Measurement units:
// - RSRP: W (dBW)
// returns RXgain to be adjusted based on target rx power (50db) - received digital power in db/RE
int nr_sl_psbch_rsrp_measurements(sl_nr_ue_phy_params_t *sl_phy_params,
int nr_sl_psbch_rsrp_measurements(PHY_VARS_NR_UE *ue,
sl_nr_ue_phy_params_t *sl_phy_params,
NR_DL_FRAME_PARMS *fp,
c16_t rxdataF[][fp->samples_per_slot_wCP],
bool use_SSS,
openair0_config_t *openair0_cfg)
bool use_SSS)
{
SL_NR_UE_PSBCH_t *psbch_rx = &sl_phy_params->psbch;
uint8_t numsym = (fp->Ncp) ? SL_NR_NUM_SYMBOLS_SSB_EXT_CP : SL_NR_NUM_SYMBOLS_SSB_NORMAL_CP;
@@ -629,9 +633,10 @@ int nr_sl_psbch_rsrp_measurements(sl_nr_ue_phy_params_t *sl_phy_params,
}
psbch_rx->rsrp_dB_per_RE = 10 * log10(rsrp / num_re);
psbch_rx->rsrp_dBm_per_RE = psbch_rx->rsrp_dB_per_RE + 30 - SQ15_SQUARED_NORM_FACTOR_DB
- ((int)openair0_cfg[0].rx_gain[0] - (int)openair0_cfg[0].rx_gain_offset[0])
- dB_fixed(fp->ofdm_symbol_size);
psbch_rx->rsrp_dBm_per_RE =
psbch_rx->rsrp_dB_per_RE + 30 - SQ15_SQUARED_NORM_FACTOR_DB
- ((int)openair0_cfg[ue->rf_map.card].rx_gain[0] - (int)openair0_cfg[ue->rf_map.card].rx_gain_offset[0])
- dB_fixed(fp->ofdm_symbol_size);
int adjust_rxgain = TARGET_RX_POWER - psbch_rx->rsrp_dB_per_RE;