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@ -108,7 +108,7 @@ int derive_coreset0_params(rrc_cell_cfg_nr_t& cell)
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(ssb_abs_freq_Hz > pointA_abs_freq_Hz) ? (uint32_t)(ssb_abs_freq_Hz - pointA_abs_freq_Hz) : 0;
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(ssb_abs_freq_Hz > pointA_abs_freq_Hz) ? (uint32_t)(ssb_abs_freq_Hz - pointA_abs_freq_Hz) : 0;
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int ret = srsran_coreset_zero(cell.phy_cell.carrier.pci,
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int ret = srsran_coreset_zero(cell.phy_cell.carrier.pci,
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ssb_pointA_freq_offset_Hz,
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ssb_pointA_freq_offset_Hz,
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cell.ssb_cfg.scs,
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cell.ssb_scs,
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cell.phy_cell.carrier.scs,
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cell.phy_cell.carrier.scs,
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cell.coreset0_idx,
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cell.coreset0_idx,
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&cell.phy_cell.pdcch.coreset[0]);
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&cell.phy_cell.pdcch.coreset[0]);
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@ -122,7 +122,7 @@ int derive_ssb_params(bool is_sa,
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srsran_subcarrier_spacing_t pdcch_scs,
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srsran_subcarrier_spacing_t pdcch_scs,
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uint32_t coreset0_idx,
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uint32_t coreset0_idx,
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uint32_t nof_prb,
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uint32_t nof_prb,
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srsran_ssb_cfg_t& ssb)
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rrc_cell_cfg_nr_t& cell)
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{
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{
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// Verify essential parameters are specified and valid
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// Verify essential parameters are specified and valid
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ERROR_IF_NOT(dl_arfcn > 0, "Invalid DL ARFCN=%d", dl_arfcn);
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ERROR_IF_NOT(dl_arfcn > 0, "Invalid DL ARFCN=%d", dl_arfcn);
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@ -136,20 +136,17 @@ int derive_ssb_params(bool is_sa,
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double dl_freq_hz = band_helper.nr_arfcn_to_freq(dl_arfcn);
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double dl_freq_hz = band_helper.nr_arfcn_to_freq(dl_arfcn);
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uint32_t dl_absolute_freq_point_a = band_helper.get_abs_freq_point_a_arfcn(nof_prb, dl_arfcn);
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uint32_t dl_absolute_freq_point_a = band_helper.get_abs_freq_point_a_arfcn(nof_prb, dl_arfcn);
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ssb.center_freq_hz = dl_freq_hz;
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ssb.duplex_mode = band_helper.get_duplex_mode(band);
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// derive SSB pattern and scs
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// derive SSB pattern and scs
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ssb.pattern = band_helper.get_ssb_pattern(band, srsran_subcarrier_spacing_15kHz);
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cell.ssb_pattern = band_helper.get_ssb_pattern(band, srsran_subcarrier_spacing_15kHz);
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if (ssb.pattern == SRSRAN_SSB_PATTERN_A) {
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if (cell.ssb_pattern == SRSRAN_SSB_PATTERN_A) {
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// 15kHz SSB SCS
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// 15kHz SSB SCS
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ssb.scs = srsran_subcarrier_spacing_15kHz;
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cell.ssb_scs = srsran_subcarrier_spacing_15kHz;
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} else {
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} else {
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// try to optain SSB pattern for same band with 30kHz SCS
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// try to optain SSB pattern for same band with 30kHz SCS
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ssb.pattern = band_helper.get_ssb_pattern(band, srsran_subcarrier_spacing_30kHz);
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cell.ssb_pattern = band_helper.get_ssb_pattern(band, srsran_subcarrier_spacing_30kHz);
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if (ssb.pattern == SRSRAN_SSB_PATTERN_B || ssb.pattern == SRSRAN_SSB_PATTERN_C) {
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if (cell.ssb_pattern == SRSRAN_SSB_PATTERN_B || cell.ssb_pattern == SRSRAN_SSB_PATTERN_C) {
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// SSB SCS is 30 kHz
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// SSB SCS is 30 kHz
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ssb.scs = srsran_subcarrier_spacing_30kHz;
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cell.ssb_scs = srsran_subcarrier_spacing_30kHz;
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} else {
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} else {
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srsran_terminate("Can't derive SSB pattern from band %d", band);
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srsran_terminate("Can't derive SSB pattern from band %d", band);
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}
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}
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@ -159,29 +156,20 @@ int derive_ssb_params(bool is_sa,
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int coreset0_rb_offset = 0;
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int coreset0_rb_offset = 0;
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if (is_sa) {
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if (is_sa) {
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// Get offset in RBs between CORESET#0 and SSB
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// Get offset in RBs between CORESET#0 and SSB
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coreset0_rb_offset = srsran_coreset0_ssb_offset(coreset0_idx, ssb.scs, pdcch_scs);
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coreset0_rb_offset = srsran_coreset0_ssb_offset(coreset0_idx, cell.ssb_scs, pdcch_scs);
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ERROR_IF_NOT(coreset0_rb_offset >= 0, "Failed to compute RB offset between CORESET#0 and SSB");
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ERROR_IF_NOT(coreset0_rb_offset >= 0, "Failed to compute RB offset between CORESET#0 and SSB");
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} else {
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} else {
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// TODO: Verify if specified SSB frequency is valid
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// TODO: Verify if specified SSB frequency is valid
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}
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}
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uint32_t ssb_abs_freq_point =
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uint32_t ssb_abs_freq_point =
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band_helper.get_abs_freq_ssb_arfcn(band, ssb.scs, dl_absolute_freq_point_a, coreset0_rb_offset);
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band_helper.get_abs_freq_ssb_arfcn(band, cell.ssb_scs, dl_absolute_freq_point_a, coreset0_rb_offset);
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ERROR_IF_NOT(ssb_abs_freq_point > 0,
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ERROR_IF_NOT(ssb_abs_freq_point > 0,
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"Can't derive SSB freq point for dl_arfcn=%d and band %d",
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"Can't derive SSB freq point for dl_arfcn=%d and band %d",
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band_helper.freq_to_nr_arfcn(dl_freq_hz),
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band_helper.freq_to_nr_arfcn(dl_freq_hz),
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band);
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band);
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// Convert to frequency for PHY
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// Convert to frequency for PHY
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ssb.ssb_freq_hz = band_helper.nr_arfcn_to_freq(ssb_abs_freq_point);
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cell.ssb_freq_hz = band_helper.nr_arfcn_to_freq(ssb_abs_freq_point);
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ssb.periodicity_ms = 10; // TODO: make a param
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ssb.beta_pss = 0.0;
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ssb.beta_sss = 0.0;
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ssb.beta_pbch = 0.0;
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ssb.beta_pbch_dmrs = 0.0;
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// set by PHY layer in worker_pool::set_common_cfg
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ssb.srate_hz = 0.0;
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ssb.scaling = 0.0;
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return SRSRAN_SUCCESS;
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return SRSRAN_SUCCESS;
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}
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}
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@ -250,9 +238,9 @@ int set_derived_nr_cell_params(bool is_sa, rrc_cell_cfg_nr_t& cell)
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cell.phy_cell.carrier.scs,
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cell.phy_cell.carrier.scs,
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cell.coreset0_idx,
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cell.coreset0_idx,
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cell.phy_cell.carrier.nof_prb,
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cell.phy_cell.carrier.nof_prb,
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cell.ssb_cfg);
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cell);
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cell.phy_cell.carrier.ssb_center_freq_hz = cell.ssb_cfg.ssb_freq_hz;
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cell.phy_cell.carrier.ssb_center_freq_hz = cell.ssb_freq_hz;
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cell.ssb_absolute_freq_point = band_helper.freq_to_nr_arfcn(cell.ssb_cfg.ssb_freq_hz);
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cell.ssb_absolute_freq_point = band_helper.freq_to_nr_arfcn(cell.ssb_freq_hz);
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// Derive remaining config params
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// Derive remaining config params
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if (is_sa) {
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if (is_sa) {
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@ -337,7 +325,6 @@ int set_derived_nr_rrc_params(rrc_nr_cfg_t& rrc_cfg)
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int check_nr_cell_cfg_valid(const rrc_cell_cfg_nr_t& cell, bool is_sa)
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int check_nr_cell_cfg_valid(const rrc_cell_cfg_nr_t& cell, bool is_sa)
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{
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{
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// verify SSB params are consistent
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// verify SSB params are consistent
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ERROR_IF_NOT(cell.ssb_cfg.center_freq_hz == cell.phy_cell.dl_freq_hz, "Invalid SSB param generation");
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HANDLE_ERROR(check_nr_phy_cell_cfg_valid(cell.phy_cell));
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HANDLE_ERROR(check_nr_phy_cell_cfg_valid(cell.phy_cell));
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if (is_sa) {
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if (is_sa) {
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