Merge remote-tracking branch 'origin/move_ntn_l1_files' into integration_2026_w02 (!3836)
move NTN UE L1 functions to a new file Moved from nr-ue not to overload that file with functions of a specific mode
This commit is contained in:
Jaroslava Fiedlerova
@@ -979,6 +979,7 @@ set(PHY_SRC_UE
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${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/cic_filter_nr.c
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${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_initial_sync.c
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${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_initial_sync_sl.c
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${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_ntn_l1.c
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${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_ue_rf_helpers.c
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${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_pbch.c
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${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_psbch_rx.c
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@@ -497,8 +497,6 @@ static uint64_t get_carrier_frequency(const int N_RB, const int mu, const uint32
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return carrier_freq;
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}
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static void apply_ntn_timing_advance_and_doppler(PHY_VARS_NR_UE *UE, const NR_DL_FRAME_PARMS *fp, int abs_subframe_tx);
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static int handle_sync_req_from_mac(PHY_VARS_NR_UE *UE)
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{
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NR_DL_FRAME_PARMS *fp = &UE->frame_parms;
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@@ -735,175 +733,6 @@ static inline int get_readBlockSize(uint16_t slot, NR_DL_FRAME_PARMS *fp) {
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return rem_samples + next_slot_first_symbol;
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}
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static void fix_ntn_epoch_hfn(PHY_VARS_NR_UE *UE, int hfn, int frame)
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{
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if (!UE->nrUE_config.ntn_config.is_targetcell)
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return;
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UE->nrUE_config.ntn_config.is_targetcell = false;
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const int epoch_frame = UE->nrUE_config.ntn_config.epoch_sfn;
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const int diff1 = (frame - epoch_frame + 1024) % 1024;
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const int diff2 = (epoch_frame - frame + 1024) % 1024;
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int *epoch_hfn = &UE->nrUE_config.ntn_config.epoch_hfn;
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if (diff1 < diff2) { // epoch_frame in the past
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LOG_I(PHY, "epoch is %d frames in the past\n", diff1);
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if (epoch_frame <= frame)
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*epoch_hfn = hfn;
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else
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*epoch_hfn = hfn - 1;
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} else { // epoch_frame in the future
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LOG_I(PHY, "epoch is %d frames in the future\n", diff2);
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if (epoch_frame >= frame)
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*epoch_hfn = hfn;
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else
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*epoch_hfn = hfn + 1;
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}
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LOG_I(PHY, "setting epoch_hfn = %d\n", *epoch_hfn);
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}
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#define SPEED_OF_LIGHT 299792458
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// calculate TA and Doppler based on the NTN-Config, if abs_subframe_tx < 0 then apply only Doppler
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static void apply_ntn_timing_advance_and_doppler(PHY_VARS_NR_UE *UE, const NR_DL_FRAME_PARMS *fp, int abs_subframe_tx)
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{
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const fapi_nr_ntn_config_t *ntn_config_params = &UE->nrUE_config.ntn_config;
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// Handle terrestrial networks
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if (ntn_config_params->cell_specific_k_offset == 0) {
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if (abs_subframe_tx >= 0)
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UE->timing_advance_ntn = 0;
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UE->dl_Doppler_shift = 0;
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UE->ul_Doppler_shift = 0;
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return;
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}
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const int abs_subframe_epoch = ntn_config_params->epoch_subframe
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+ ntn_config_params->epoch_sfn * 10
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+ ntn_config_params->epoch_hfn * 10240;
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const int ms_since_epoch = abs_subframe_tx < 0 ? 0 : abs_subframe_tx - abs_subframe_epoch;
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const position_t pos_sat_0 = ntn_config_params->pos_sat_0;
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const position_t vel_sat_0 = ntn_config_params->vel_sat_0;
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position_t pos_sat;
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position_t vel_sat;
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const double omega = ntn_config_params->omega;
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if (omega) {
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const double cos_wt = cos(omega * ms_since_epoch);
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const double sin_wt = sin(omega * ms_since_epoch);
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const position_t pos_sat_90 = ntn_config_params->pos_sat_90;
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pos_sat = (position_t){pos_sat_0.X * cos_wt + pos_sat_90.X * sin_wt,
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pos_sat_0.Y * cos_wt + pos_sat_90.Y * sin_wt,
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pos_sat_0.Z * cos_wt + pos_sat_90.Z * sin_wt};
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const position_t vel_sat_90 = ntn_config_params->vel_sat_90;
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vel_sat = (position_t){vel_sat_0.X * cos_wt + vel_sat_90.X * sin_wt,
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vel_sat_0.Y * cos_wt + vel_sat_90.Y * sin_wt,
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vel_sat_0.Z * cos_wt + vel_sat_90.Z * sin_wt};
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} else {
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pos_sat = (position_t){pos_sat_0.X + vel_sat_0.X * ms_since_epoch / 1000,
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pos_sat_0.Y + vel_sat_0.Y * ms_since_epoch / 1000,
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pos_sat_0.Z + vel_sat_0.Z * ms_since_epoch / 1000};
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vel_sat = vel_sat_0;
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}
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position_t pos_ue = {0};
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get_position_coordinates(UE->Mod_id, &pos_ue);
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// calculate directional vector from SAT to UE
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const position_t dir_sat_ue = {pos_ue.X - pos_sat.X, pos_ue.Y - pos_sat.Y, pos_ue.Z - pos_sat.Z};
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// calculate distance between SAT and UE
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const double distance = sqrt(dir_sat_ue.X * dir_sat_ue.X + dir_sat_ue.Y * dir_sat_ue.Y + dir_sat_ue.Z * dir_sat_ue.Z);
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// calculate projected velocity from SAT towards UE
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const double vel_sat_ue = (vel_sat.X * dir_sat_ue.X + vel_sat.Y * dir_sat_ue.Y + vel_sat.Z * dir_sat_ue.Z) / distance;
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// calculate DL Doppler shift (moving source)
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const double dl_Doppler_shift = (vel_sat_ue / (SPEED_OF_LIGHT - vel_sat_ue)) * fp->dl_CarrierFreq;
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// calculate UL Doppler shift (moving target)
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const double ul_Doppler_shift = (vel_sat_ue / SPEED_OF_LIGHT) * fp->ul_CarrierFreq;
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// calculate round-trip-time (factor 2) between SAT and UE in ms (factor 1000)
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const double N_UE_TA_adj = 2000 * distance / SPEED_OF_LIGHT;
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const double N_common_ta_adj = ntn_config_params->N_common_ta_adj;
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const double N_common_ta_drift = ntn_config_params->N_common_ta_drift;
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const double N_common_ta_drift_variant = ntn_config_params->N_common_ta_drift_variant;
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if (abs_subframe_tx >= 0) {
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UE->timing_advance_ntn = (N_UE_TA_adj + N_common_ta_adj + N_common_ta_drift * ms_since_epoch / 1e6
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+ N_common_ta_drift_variant * ((int64_t)ms_since_epoch * ms_since_epoch) / 1e9)
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* fp->samples_per_subframe;
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}
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UE->freq_offset -= dl_Doppler_shift - UE->dl_Doppler_shift;
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UE->dl_Doppler_shift = dl_Doppler_shift;
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UE->ul_Doppler_shift = ul_Doppler_shift;
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if (abs_subframe_tx < 0) {
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LOG_I(PHY,
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"satellite velocity towards UE = %f m/s, DL Doppler shift = %f kHz, UL Doppler shift = %f kHz\n",
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vel_sat_ue,
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dl_Doppler_shift / 1000,
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ul_Doppler_shift / 1000);
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}
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}
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// apply values based on the NTN-Config
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static void apply_ntn_config(PHY_VARS_NR_UE *UE,
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NR_DL_FRAME_PARMS *fp,
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int hfn_rx,
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int frame_rx,
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int slot_rx,
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int *duration_rx_to_tx,
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int *timing_advance,
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int *ntn_koffset,
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bool *ntn_targetcell)
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{
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// return if there is no pending update
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if (!UE->nrUE_config.ntn_config.params_changed)
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return;
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*ntn_targetcell = UE->nrUE_config.ntn_config.is_targetcell;
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// skip update if it is for the target cell
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if (UE->nrUE_config.ntn_config.is_targetcell)
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return;
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UE->nrUE_config.ntn_config.params_changed = false;
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const fapi_nr_ntn_config_t *ntn_config_params = &UE->nrUE_config.ntn_config;
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const int mu = fp->numerology_index;
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const int koffset = ntn_config_params->cell_specific_k_offset;
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*duration_rx_to_tx = NR_UE_CAPABILITY_SLOT_RX_TO_TX + (koffset << mu);
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if (koffset > *ntn_koffset)
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*timing_advance += get_samples_slot_duration(fp, slot_rx, (koffset - *ntn_koffset) << mu);
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else if (koffset < *ntn_koffset)
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*timing_advance -= get_samples_slot_duration(fp, slot_rx, (*ntn_koffset - koffset) << mu);
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*ntn_koffset = koffset;
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const int abs_subframe_tx = 10240 * hfn_rx + 10 * frame_rx + ((slot_rx + *duration_rx_to_tx) >> mu);
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apply_ntn_timing_advance_and_doppler(UE, fp, abs_subframe_tx);
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LOG_I(PHY,
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"k_offset: %dms, N_Common_Ta: %fms, drift: %fµs/s, variant: %fµs/s², "
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"timing_advance_ntn: %d samples, DL Doppler shift: %fkHz, UL Doppler shift: %fkHz\n",
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koffset << mu,
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ntn_config_params->N_common_ta_adj,
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ntn_config_params->N_common_ta_drift,
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ntn_config_params->N_common_ta_drift_variant,
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UE->timing_advance_ntn,
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UE->dl_Doppler_shift / 1000,
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UE->ul_Doppler_shift / 1000);
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}
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void *UE_thread(void *arg)
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{
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//this thread should be over the processing thread to keep in real time
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@@ -0,0 +1,191 @@
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/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
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void fix_ntn_epoch_hfn(PHY_VARS_NR_UE *UE, int hfn, int frame)
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{
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if (!UE->nrUE_config.ntn_config.is_targetcell)
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return;
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UE->nrUE_config.ntn_config.is_targetcell = false;
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const int epoch_frame = UE->nrUE_config.ntn_config.epoch_sfn;
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const int diff1 = (frame - epoch_frame + 1024) % 1024;
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const int diff2 = (epoch_frame - frame + 1024) % 1024;
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int *epoch_hfn = &UE->nrUE_config.ntn_config.epoch_hfn;
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if (diff1 < diff2) { // epoch_frame in the past
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LOG_I(PHY, "epoch is %d frames in the past\n", diff1);
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if (epoch_frame <= frame)
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*epoch_hfn = hfn;
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else
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*epoch_hfn = hfn - 1;
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} else { // epoch_frame in the future
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LOG_I(PHY, "epoch is %d frames in the future\n", diff2);
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if (epoch_frame >= frame)
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*epoch_hfn = hfn;
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else
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*epoch_hfn = hfn + 1;
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}
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LOG_I(PHY, "setting epoch_hfn = %d\n", *epoch_hfn);
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}
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#define SPEED_OF_LIGHT 299792458
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// calculate TA and Doppler based on the NTN-Config, if abs_subframe_tx < 0 then apply only Doppler
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void apply_ntn_timing_advance_and_doppler(PHY_VARS_NR_UE *UE, const NR_DL_FRAME_PARMS *fp, int abs_subframe_tx)
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{
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const fapi_nr_ntn_config_t *ntn_config_params = &UE->nrUE_config.ntn_config;
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// Handle terrestrial networks
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if (ntn_config_params->cell_specific_k_offset == 0) {
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if (abs_subframe_tx >= 0)
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UE->timing_advance_ntn = 0;
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UE->dl_Doppler_shift = 0;
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UE->ul_Doppler_shift = 0;
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return;
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}
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const int abs_subframe_epoch = ntn_config_params->epoch_subframe
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+ ntn_config_params->epoch_sfn * 10
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+ ntn_config_params->epoch_hfn * 10240;
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const int ms_since_epoch = abs_subframe_tx < 0 ? 0 : abs_subframe_tx - abs_subframe_epoch;
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const position_t pos_sat_0 = ntn_config_params->pos_sat_0;
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const position_t vel_sat_0 = ntn_config_params->vel_sat_0;
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position_t pos_sat;
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position_t vel_sat;
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const double omega = ntn_config_params->omega;
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if (omega) {
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const double cos_wt = cos(omega * ms_since_epoch);
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const double sin_wt = sin(omega * ms_since_epoch);
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const position_t pos_sat_90 = ntn_config_params->pos_sat_90;
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pos_sat = (position_t){pos_sat_0.X * cos_wt + pos_sat_90.X * sin_wt,
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pos_sat_0.Y * cos_wt + pos_sat_90.Y * sin_wt,
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pos_sat_0.Z * cos_wt + pos_sat_90.Z * sin_wt};
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const position_t vel_sat_90 = ntn_config_params->vel_sat_90;
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vel_sat = (position_t){vel_sat_0.X * cos_wt + vel_sat_90.X * sin_wt,
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vel_sat_0.Y * cos_wt + vel_sat_90.Y * sin_wt,
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vel_sat_0.Z * cos_wt + vel_sat_90.Z * sin_wt};
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} else {
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pos_sat = (position_t){pos_sat_0.X + vel_sat_0.X * ms_since_epoch / 1000,
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pos_sat_0.Y + vel_sat_0.Y * ms_since_epoch / 1000,
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pos_sat_0.Z + vel_sat_0.Z * ms_since_epoch / 1000};
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vel_sat = vel_sat_0;
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}
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position_t pos_ue = {0};
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get_position_coordinates(UE->Mod_id, &pos_ue);
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// calculate directional vector from SAT to UE
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const position_t dir_sat_ue = {pos_ue.X - pos_sat.X, pos_ue.Y - pos_sat.Y, pos_ue.Z - pos_sat.Z};
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// calculate distance between SAT and UE
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const double distance = sqrt(dir_sat_ue.X * dir_sat_ue.X + dir_sat_ue.Y * dir_sat_ue.Y + dir_sat_ue.Z * dir_sat_ue.Z);
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// calculate projected velocity from SAT towards UE
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const double vel_sat_ue = (vel_sat.X * dir_sat_ue.X + vel_sat.Y * dir_sat_ue.Y + vel_sat.Z * dir_sat_ue.Z) / distance;
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// calculate DL Doppler shift (moving source)
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const double dl_Doppler_shift = (vel_sat_ue / (SPEED_OF_LIGHT - vel_sat_ue)) * fp->dl_CarrierFreq;
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// calculate UL Doppler shift (moving target)
|
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const double ul_Doppler_shift = (vel_sat_ue / SPEED_OF_LIGHT) * fp->ul_CarrierFreq;
|
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|
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// calculate round-trip-time (factor 2) between SAT and UE in ms (factor 1000)
|
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const double N_UE_TA_adj = 2000 * distance / SPEED_OF_LIGHT;
|
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|
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const double N_common_ta_adj = ntn_config_params->N_common_ta_adj;
|
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const double N_common_ta_drift = ntn_config_params->N_common_ta_drift;
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const double N_common_ta_drift_variant = ntn_config_params->N_common_ta_drift_variant;
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if (abs_subframe_tx >= 0) {
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UE->timing_advance_ntn = (N_UE_TA_adj + N_common_ta_adj + N_common_ta_drift * ms_since_epoch / 1e6
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+ N_common_ta_drift_variant * ((int64_t)ms_since_epoch * ms_since_epoch) / 1e9)
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* fp->samples_per_subframe;
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}
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UE->freq_offset -= dl_Doppler_shift - UE->dl_Doppler_shift;
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UE->dl_Doppler_shift = dl_Doppler_shift;
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UE->ul_Doppler_shift = ul_Doppler_shift;
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|
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if (abs_subframe_tx < 0) {
|
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LOG_I(PHY,
|
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"satellite velocity towards UE = %f m/s, DL Doppler shift = %f kHz, UL Doppler shift = %f kHz\n",
|
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vel_sat_ue,
|
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dl_Doppler_shift / 1000,
|
||||
ul_Doppler_shift / 1000);
|
||||
}
|
||||
}
|
||||
|
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// apply values based on the NTN-Config
|
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void apply_ntn_config(PHY_VARS_NR_UE *UE,
|
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NR_DL_FRAME_PARMS *fp,
|
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int hfn_rx,
|
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int frame_rx,
|
||||
int slot_rx,
|
||||
int *duration_rx_to_tx,
|
||||
int *timing_advance,
|
||||
int *ntn_koffset,
|
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bool *ntn_targetcell)
|
||||
{
|
||||
// return if there is no pending update
|
||||
if (!UE->nrUE_config.ntn_config.params_changed)
|
||||
return;
|
||||
|
||||
*ntn_targetcell = UE->nrUE_config.ntn_config.is_targetcell;
|
||||
|
||||
// skip update if it is for the target cell
|
||||
if (UE->nrUE_config.ntn_config.is_targetcell)
|
||||
return;
|
||||
|
||||
UE->nrUE_config.ntn_config.params_changed = false;
|
||||
|
||||
const fapi_nr_ntn_config_t *ntn_config_params = &UE->nrUE_config.ntn_config;
|
||||
|
||||
const int mu = fp->numerology_index;
|
||||
const int koffset = ntn_config_params->cell_specific_k_offset;
|
||||
|
||||
*duration_rx_to_tx = NR_UE_CAPABILITY_SLOT_RX_TO_TX + (koffset << mu);
|
||||
if (koffset > *ntn_koffset)
|
||||
*timing_advance += get_samples_slot_duration(fp, slot_rx, (koffset - *ntn_koffset) << mu);
|
||||
else if (koffset < *ntn_koffset)
|
||||
*timing_advance -= get_samples_slot_duration(fp, slot_rx, (*ntn_koffset - koffset) << mu);
|
||||
*ntn_koffset = koffset;
|
||||
|
||||
const int abs_subframe_tx = 10240 * hfn_rx + 10 * frame_rx + ((slot_rx + *duration_rx_to_tx) >> mu);
|
||||
apply_ntn_timing_advance_and_doppler(UE, fp, abs_subframe_tx);
|
||||
|
||||
LOG_I(PHY,
|
||||
"k_offset: %dms, N_Common_Ta: %fms, drift: %fµs/s, variant: %fµs/s², "
|
||||
"timing_advance_ntn: %d samples, DL Doppler shift: %fkHz, UL Doppler shift: %fkHz\n",
|
||||
koffset << mu,
|
||||
ntn_config_params->N_common_ta_adj,
|
||||
ntn_config_params->N_common_ta_drift,
|
||||
ntn_config_params->N_common_ta_drift_variant,
|
||||
UE->timing_advance_ntn,
|
||||
UE->dl_Doppler_shift / 1000,
|
||||
UE->ul_Doppler_shift / 1000);
|
||||
}
|
||||
@@ -330,7 +330,17 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
|
||||
pdsch_scope_req_t *scope_req);
|
||||
|
||||
int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, int frame, uint8_t slot, c16_t **txData);
|
||||
|
||||
void apply_ntn_config(PHY_VARS_NR_UE *UE,
|
||||
NR_DL_FRAME_PARMS *fp,
|
||||
int hfn_rx,
|
||||
int frame_rx,
|
||||
int slot_rx,
|
||||
int *duration_rx_to_tx,
|
||||
int *timing_advance,
|
||||
int *ntn_koffset,
|
||||
bool *ntn_targetcell);
|
||||
void fix_ntn_epoch_hfn(PHY_VARS_NR_UE *UE, int hfn, int frame);
|
||||
void apply_ntn_timing_advance_and_doppler(PHY_VARS_NR_UE *UE, const NR_DL_FRAME_PARMS *fp, int abs_subframe_tx);
|
||||
void dump_nrdlsch(PHY_VARS_NR_UE *ue,uint8_t gNB_id,uint8_t nr_slot_rx,unsigned int *coded_bits_per_codeword,int round, unsigned char harq_pid);
|
||||
void nr_a_sum_b(c16_t *input_x, c16_t *input_y, unsigned short nb_rb);
|
||||
|
||||
|
||||
Reference in New Issue
Block a user