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@ -165,7 +165,9 @@ int srsran_ue_dl_nr_set_carrier(srsran_ue_dl_nr_t* q, const srsran_carrier_nr_t*
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return SRSRAN_SUCCESS;
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}
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int srsran_ue_dl_nr_set_pdcch_config(srsran_ue_dl_nr_t* q, const srsran_ue_dl_nr_pdcch_cfg_t* cfg)
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int srsran_ue_dl_nr_set_pdcch_config(srsran_ue_dl_nr_t* q,
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const srsran_pdcch_cfg_nr_t* cfg,
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const srsran_dci_cfg_nr_t* dci_cfg)
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{
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if (q == NULL || cfg == NULL) {
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return SRSRAN_ERROR_INVALID_INPUTS;
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@ -176,11 +178,20 @@ int srsran_ue_dl_nr_set_pdcch_config(srsran_ue_dl_nr_t* q, const srsran_ue_dl_nr
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// iterate over all possible CORESET and initialise/update the present ones
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for (uint32_t i = 0; i < SRSRAN_UE_DL_NR_MAX_NOF_CORESET; i++) {
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if (cfg->coreset_present[i]) {
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// Skip CORESET if not present
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if (!cfg->coreset_present[i]) {
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continue;
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}
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// Initialise estimator for the CORESET
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if (srsran_dmrs_pdcch_estimator_init(&q->dmrs_pdcch[i], &q->carrier, &cfg->coreset[i]) < SRSRAN_SUCCESS) {
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return SRSRAN_ERROR;
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}
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}
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// Configure DCI sizes
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if (srsran_dci_nr_set_cfg(&q->dci, dci_cfg) < SRSRAN_SUCCESS) {
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return SRSRAN_ERROR;
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}
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return SRSRAN_SUCCESS;
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@ -220,28 +231,28 @@ static int ue_dl_nr_find_dci_ncce(srsran_ue_dl_nr_t* q,
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return SRSRAN_ERROR;
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}
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SRSRAN_MEM_ZERO(pdcch_info, srsran_ue_dl_nr_pdcch_info_t, 1);
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pdcch_info->coreset_id = dci_msg->coreset_id;
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pdcch_info->ss_id = dci_msg->search_space;
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pdcch_info->location = dci_msg->location;
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pdcch_info->dci_ctx = dci_msg->ctx;
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pdcch_info->nof_bits = dci_msg->nof_bits;
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srsran_dmrs_pdcch_measure_t* m = &pdcch_info->measure;
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// Measures the PDCCH transmission DMRS
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if (srsran_dmrs_pdcch_get_measure(&q->dmrs_pdcch[coreset_id], &dci_msg->location, m) < SRSRAN_SUCCESS) {
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ERROR("Error getting measure location L=%d, ncce=%d", dci_msg->location.L, dci_msg->location.ncce);
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srsran_dci_location_t location = dci_msg->ctx.location;
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if (srsran_dmrs_pdcch_get_measure(&q->dmrs_pdcch[coreset_id], &location, m) < SRSRAN_SUCCESS) {
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ERROR("Error getting measure location L=%d, ncce=%d", location.L, location.ncce);
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return SRSRAN_ERROR;
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}
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// If measured correlation is invalid, early return
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if (!isnormal(m->norm_corr)) {
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INFO("Discarded PDCCH candidate L=%d;ncce=%d; Invalid measurement;", dci_msg->location.L, dci_msg->location.ncce);
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INFO("Discarded PDCCH candidate L=%d;ncce=%d; Invalid measurement;", location.L, location.ncce);
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return SRSRAN_SUCCESS;
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}
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// Compare EPRE with threshold
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if (m->epre_dBfs < q->pdcch_dmrs_epre_thr) {
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INFO("Discarded PDCCH candidate L=%d;ncce=%d; EPRE is too weak (%.1f<%.1f);",
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dci_msg->location.L,
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dci_msg->location.ncce,
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location.L,
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location.ncce,
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m->epre_dBfs,
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q->pdcch_dmrs_epre_thr);
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return SRSRAN_SUCCESS;
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@ -250,8 +261,8 @@ static int ue_dl_nr_find_dci_ncce(srsran_ue_dl_nr_t* q,
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// Compare DMRS correlation with threshold
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if (m->norm_corr < q->pdcch_dmrs_corr_thr) {
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INFO("Discarded PDCCH candidate L=%d;ncce=%d; Correlation is too low (%.1f<%.1f); EPRE=%+.2f; RSRP=%+.2f;",
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dci_msg->location.L,
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dci_msg->location.ncce,
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location.L,
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location.ncce,
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m->norm_corr,
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q->pdcch_dmrs_corr_thr,
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m->epre_dBfs,
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@ -260,7 +271,7 @@ static int ue_dl_nr_find_dci_ncce(srsran_ue_dl_nr_t* q,
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}
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// Extract PDCCH channel estimates
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if (srsran_dmrs_pdcch_get_ce(&q->dmrs_pdcch[coreset_id], &dci_msg->location, q->pdcch_ce) < SRSRAN_SUCCESS) {
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if (srsran_dmrs_pdcch_get_ce(&q->dmrs_pdcch[coreset_id], &location, q->pdcch_ce) < SRSRAN_SUCCESS) {
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ERROR("Error extracting PDCCH DMRS");
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return SRSRAN_ERROR;
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}
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@ -293,12 +304,15 @@ static bool find_dci_msg(srsran_dci_msg_nr_t* dci_msg, uint32_t nof_dci_msg, srs
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return found;
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}
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static int ue_dl_nr_find_dl_dci_ss(srsran_ue_dl_nr_t* q,
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static int ue_dl_nr_find_dci_ss(srsran_ue_dl_nr_t* q,
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const srsran_slot_cfg_t* slot_cfg,
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const srsran_search_space_t* search_space,
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uint16_t rnti,
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srsran_rnti_type_t rnti_type)
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{
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uint32_t dci_sizes[SRSRAN_DCI_NR_MAX_NOF_SIZES] = {};
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uint32_t dci_sizes_count = 0;
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// Select CORESET
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uint32_t coreset_id = search_space->coreset_id;
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if (coreset_id >= SRSRAN_UE_DL_NR_MAX_NOF_CORESET || !q->cfg.coreset_present[coreset_id]) {
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@ -313,18 +327,39 @@ static int ue_dl_nr_find_dl_dci_ss(srsran_ue_dl_nr_t* q,
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return SRSRAN_ERROR;
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}
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// Hard-coded values
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srsran_dci_format_nr_t dci_format = srsran_dci_format_nr_1_0;
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// Iterate all possible formats
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for (uint32_t format_idx = 0; format_idx < SRSRAN_MIN(search_space->nof_formats, SRSRAN_DCI_FORMAT_NR_COUNT);
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format_idx++) {
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srsran_dci_format_nr_t dci_format = search_space->formats[format_idx];
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// Calculate number of DCI bits
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int dci_nof_bits = srsran_dci_nr_format_1_0_sizeof(&q->carrier, coreset, rnti_type);
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if (dci_nof_bits <= SRSRAN_SUCCESS) {
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uint32_t dci_nof_bits = srsran_dci_nr_size(&q->dci, search_space->type, dci_format);
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if (dci_nof_bits == 0) {
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ERROR("Error DCI size");
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return SRSRAN_ERROR;
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}
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// Skip DCI format if the size was already searched for the search space
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bool skip = false;
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for (uint32_t i = 0; i < dci_sizes_count && !skip; i++) {
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if (dci_nof_bits == dci_sizes[i]) {
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skip = true;
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}
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}
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if (skip) {
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continue;
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}
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// Append size
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if (dci_sizes_count >= SRSRAN_DCI_NR_MAX_NOF_SIZES) {
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ERROR("Exceed maximum number of DCI sizes");
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return SRSRAN_ERROR;
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}
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dci_sizes[dci_sizes_count++] = dci_nof_bits;
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// Iterate all possible aggregation levels
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for (uint32_t L = 0; L < SRSRAN_SEARCH_SPACE_NOF_AGGREGATION_LEVELS_NR && q->dci_msg_count < SRSRAN_MAX_DCI_MSG_NR;
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for (uint32_t L = 0;
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L < SRSRAN_SEARCH_SPACE_NOF_AGGREGATION_LEVELS_NR && q->dl_dci_msg_count < SRSRAN_MAX_DCI_MSG_NR;
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L++) {
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// Calculate possible PDCCH DCI candidates
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uint32_t candidates[SRSRAN_SEARCH_SPACE_MAX_NOF_CANDIDATES_NR] = {};
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@ -336,16 +371,20 @@ static int ue_dl_nr_find_dl_dci_ss(srsran_ue_dl_nr_t* q,
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}
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// Iterate over the candidates
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for (int ncce_idx = 0; ncce_idx < nof_candidates && q->dci_msg_count < SRSRAN_MAX_DCI_MSG_NR; ncce_idx++) {
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// Set DCI context
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for (int ncce_idx = 0; ncce_idx < nof_candidates && q->dl_dci_msg_count < SRSRAN_MAX_DCI_MSG_NR; ncce_idx++) {
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// Build DCI context
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srsran_dci_ctx_t ctx = {};
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ctx.location.L = L;
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ctx.location.ncce = candidates[ncce_idx];
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ctx.ss_type = search_space->type;
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ctx.coreset_id = search_space->coreset_id;
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ctx.rnti_type = rnti_type;
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ctx.rnti = rnti;
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ctx.format = dci_format;
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// Build DCI message
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srsran_dci_msg_nr_t dci_msg = {};
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dci_msg.location.L = L;
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dci_msg.location.ncce = candidates[ncce_idx];
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dci_msg.search_space = search_space->type;
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dci_msg.coreset_id = search_space->coreset_id;
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dci_msg.rnti_type = rnti_type;
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dci_msg.rnti = rnti;
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dci_msg.format = dci_format;
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dci_msg.ctx = ctx;
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dci_msg.nof_bits = (uint32_t)dci_nof_bits;
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// Find and decode PDCCH transmission in the given ncce
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@ -359,35 +398,53 @@ static int ue_dl_nr_find_dl_dci_ss(srsran_ue_dl_nr_t* q,
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continue;
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}
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// Detect if the DCI was a format 0_0
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if (!srsran_dci_nr_format_1_0_valid(&dci_msg)) {
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// Change grant format to 0_0
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dci_msg.format = srsran_dci_format_nr_0_0;
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// Detect if the DCI is the right direction
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if (!srsran_dci_nr_valid_direction(&dci_msg)) {
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// Change grant format direction
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switch (dci_msg.ctx.format) {
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case srsran_dci_format_nr_0_0:
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dci_msg.ctx.format = srsran_dci_format_nr_1_0;
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break;
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case srsran_dci_format_nr_0_1:
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dci_msg.ctx.format = srsran_dci_format_nr_1_1;
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break;
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case srsran_dci_format_nr_1_0:
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dci_msg.ctx.format = srsran_dci_format_nr_0_0;
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break;
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case srsran_dci_format_nr_1_1:
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dci_msg.ctx.format = srsran_dci_format_nr_0_1;
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break;
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default:
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continue;
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}
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}
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// If UL grant, enqueue in UL list
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if (dci_msg.ctx.format == srsran_dci_format_nr_0_0 || dci_msg.ctx.format == srsran_dci_format_nr_0_1) {
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// If the pending UL grant list is full or has the dci message, keep moving
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if (q->pending_ul_dci_count >= SRSRAN_MAX_DCI_MSG_NR ||
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find_dci_msg(q->pending_ul_dci_msg, q->pending_ul_dci_count, &dci_msg)) {
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if (q->ul_dci_count >= SRSRAN_MAX_DCI_MSG_NR || find_dci_msg(q->ul_dci_msg, q->ul_dci_count, &dci_msg)) {
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continue;
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}
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// Save the grant in the pending UL grant list
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q->pending_ul_dci_msg[q->pending_ul_dci_count] = dci_msg;
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q->pending_ul_dci_count++;
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q->ul_dci_msg[q->ul_dci_count] = dci_msg;
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q->ul_dci_count++;
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// Move to next candidate
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continue;
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}
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// Check if the grant exists already in the message list
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if (find_dci_msg(q->dci_msg, q->dci_msg_count, &dci_msg)) {
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// Check if the grant exists already in the DL list
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if (find_dci_msg(q->dl_dci_msg, q->dl_dci_msg_count, &dci_msg)) {
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// The same DCI is in the list, keep moving
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continue;
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}
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INFO("Found DCI in L=%d,ncce=%d", dci_msg.location.L, dci_msg.location.ncce);
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INFO("Found DCI in L=%d,ncce=%d", dci_msg.ctx.location.L, dci_msg.ctx.location.ncce);
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// Append DCI message into the list
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q->dci_msg[q->dci_msg_count] = dci_msg;
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q->dci_msg_count++;
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q->dl_dci_msg[q->dl_dci_msg_count] = dci_msg;
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q->dl_dci_msg_count++;
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}
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}
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}
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@ -410,27 +467,27 @@ int srsran_ue_dl_nr_find_dl_dci(srsran_ue_dl_nr_t* q,
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nof_dci_msg = SRSRAN_MIN(nof_dci_msg, SRSRAN_MAX_DCI_MSG_NR);
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// Reset grant and blind search information counters
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q->dci_msg_count = 0;
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q->dl_dci_msg_count = 0;
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q->pdcch_info_count = 0;
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// If the UE looks for a RAR and RA search space is provided, search for it
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if (q->cfg.ra_search_space_present && rnti_type == srsran_rnti_type_ra) {
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// Find DCIs in the RA search space
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int ret = ue_dl_nr_find_dl_dci_ss(q, slot_cfg, &q->cfg.ra_search_space, rnti, rnti_type);
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int ret = ue_dl_nr_find_dci_ss(q, slot_cfg, &q->cfg.ra_search_space, rnti, rnti_type);
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if (ret < SRSRAN_SUCCESS) {
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ERROR("Error searching RAR DCI");
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return SRSRAN_ERROR;
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}
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} else {
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// Iterate all possible common and UE search spaces
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for (uint32_t i = 0; i < SRSRAN_UE_DL_NR_MAX_NOF_SEARCH_SPACE && q->dci_msg_count < nof_dci_msg; i++) {
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for (uint32_t i = 0; i < SRSRAN_UE_DL_NR_MAX_NOF_SEARCH_SPACE && q->dl_dci_msg_count < nof_dci_msg; i++) {
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// Skip search space if not present
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if (!q->cfg.search_space_present[i]) {
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continue;
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}
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// Find DCIs in the selected search space
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int ret = ue_dl_nr_find_dl_dci_ss(q, slot_cfg, &q->cfg.search_space[i], rnti, rnti_type);
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int ret = ue_dl_nr_find_dci_ss(q, slot_cfg, &q->cfg.search_space[i], rnti, rnti_type);
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if (ret < SRSRAN_SUCCESS) {
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ERROR("Error searching DCI");
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return SRSRAN_ERROR;
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@ -439,10 +496,12 @@ int srsran_ue_dl_nr_find_dl_dci(srsran_ue_dl_nr_t* q,
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}
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// Convert found DCI messages into DL grants
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uint32_t dci_msg_count = SRSRAN_MIN(nof_dci_msg, q->dci_msg_count);
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uint32_t dci_msg_count = SRSRAN_MIN(nof_dci_msg, q->dl_dci_msg_count);
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for (uint32_t i = 0; i < dci_msg_count; i++) {
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const srsran_coreset_t* coreset = &q->cfg.coreset[q->dci_msg[i].coreset_id];
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srsran_dci_nr_format_1_0_unpack(&q->carrier, coreset, &q->dci_msg[i], &dci_dl_list[i]);
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if (srsran_dci_nr_dl_unpack(&q->dci, &q->dl_dci_msg[i], &dci_dl_list[i]) < SRSRAN_SUCCESS) {
|
|
|
|
|
ERROR("Error unpacking grant %d;", i);
|
|
|
|
|
return SRSRAN_ERROR;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return (int)dci_msg_count;
|
|
|
|
|
@ -463,15 +522,14 @@ int srsran_ue_dl_nr_find_ul_dci(srsran_ue_dl_nr_t* q,
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Get DCI messages from the pending list
|
|
|
|
|
for (uint32_t i = 0; i < q->pending_ul_dci_count && count < nof_dci_msg; i++) {
|
|
|
|
|
srsran_dci_msg_nr_t* dci_msg = &q->pending_ul_dci_msg[i];
|
|
|
|
|
for (uint32_t i = 0; i < q->ul_dci_count && count < nof_dci_msg; i++) {
|
|
|
|
|
srsran_dci_msg_nr_t* dci_msg = &q->ul_dci_msg[i];
|
|
|
|
|
|
|
|
|
|
if (dci_msg->rnti_type != rnti_type || dci_msg->rnti != rnti) {
|
|
|
|
|
if (dci_msg->ctx.rnti_type != rnti_type || dci_msg->ctx.rnti != rnti) {
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const srsran_coreset_t* coreset = &q->cfg.coreset[dci_msg->coreset_id];
|
|
|
|
|
if (srsran_dci_nr_format_0_0_unpack(&q->carrier, coreset, dci_msg, &dci_ul_list[count]) < SRSRAN_SUCCESS) {
|
|
|
|
|
if (srsran_dci_nr_ul_unpack(&q->dci, dci_msg, &dci_ul_list[count]) < SRSRAN_SUCCESS) {
|
|
|
|
|
ERROR("Unpacking DCI 0_0");
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
@ -479,7 +537,7 @@ int srsran_ue_dl_nr_find_ul_dci(srsran_ue_dl_nr_t* q,
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Reset pending UL grant list
|
|
|
|
|
q->pending_ul_dci_count = 0;
|
|
|
|
|
q->ul_dci_count = 0;
|
|
|
|
|
|
|
|
|
|
return count;
|
|
|
|
|
}
|
|
|
|
|
@ -638,7 +696,7 @@ static int ue_dl_nr_gen_ack_type2(const srsran_ue_dl_nr_harq_ack_cfg_t* cfg,
|
|
|
|
|
int ue_dl_nr_pdsch_k1(const srsran_ue_dl_nr_harq_ack_cfg_t* cfg, const srsran_dci_dl_nr_t* dci_dl)
|
|
|
|
|
{
|
|
|
|
|
// For DCI format 1_0, the PDSCH-to-HARQ_feedback timing indicator field values map to {1, 2, 3, 4, 5, 6, 7, 8}
|
|
|
|
|
if (dci_dl->format == srsran_dci_format_nr_1_0) {
|
|
|
|
|
if (dci_dl->ctx.format == srsran_dci_format_nr_1_0) {
|
|
|
|
|
return (int)dci_dl->harq_feedback + 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@ -668,10 +726,10 @@ int srsran_ue_dl_nr_pdsch_ack_resource(const srsran_ue_dl_nr_harq_ack_cfg_t* cfg
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Fill PDSCH resource
|
|
|
|
|
pdsch_ack_resource->dci_format_1_1 = (dci_dl->format == srsran_dci_format_nr_1_1);
|
|
|
|
|
pdsch_ack_resource->dci_format_1_1 = (dci_dl->ctx.format == srsran_dci_format_nr_1_1);
|
|
|
|
|
pdsch_ack_resource->k1 = k1;
|
|
|
|
|
pdsch_ack_resource->v_dai_dl = dci_dl->dai;
|
|
|
|
|
pdsch_ack_resource->rnti = dci_dl->rnti;
|
|
|
|
|
pdsch_ack_resource->rnti = dci_dl->ctx.rnti;
|
|
|
|
|
pdsch_ack_resource->pucch_resource_id = dci_dl->pucch_resource;
|
|
|
|
|
|
|
|
|
|
return SRSRAN_SUCCESS;
|
|
|
|
|
@ -687,14 +745,14 @@ int srsran_ue_dl_nr_gen_ack(const srsran_ue_dl_nr_harq_ack_cfg_t* cfg,
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// According TS 38.213 9.1.2 Type-1 HARQ-ACK codebook determination
|
|
|
|
|
if (cfg->pdsch_harq_ack_codebook == srsran_pdsch_harq_ack_codebook_semi_static) {
|
|
|
|
|
if (cfg->harq_ack_codebook == srsran_pdsch_harq_ack_codebook_semi_static) {
|
|
|
|
|
// This clause applies if the UE is configured with pdsch-HARQ-ACK-Codebook = semi-static.
|
|
|
|
|
ERROR("Type-1 HARQ-ACK codebook determination is NOT implemented");
|
|
|
|
|
return SRSRAN_ERROR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// According TS 38.213 9.1.3 Type-2 HARQ-ACK codebook determination
|
|
|
|
|
if (cfg->pdsch_harq_ack_codebook == srsran_pdsch_harq_ack_codebook_dynamic) {
|
|
|
|
|
if (cfg->harq_ack_codebook == srsran_pdsch_harq_ack_codebook_dynamic) {
|
|
|
|
|
// This clause applies if the UE is configured with pdsch-HARQ-ACK-Codebook = dynamic.
|
|
|
|
|
return ue_dl_nr_gen_ack_type2(cfg, ack_info, uci_data);
|
|
|
|
|
}
|
|
|
|
|
|
Xavier Arteaga
4 years ago
committed by
Xavier Arteaga