/** * * \section COPYRIGHT * * Copyright 2013-2020 Software Radio Systems Limited * * By using this file, you agree to the terms and conditions set * forth in the LICENSE file which can be found at the top level of * the distribution. * */ #include "srslte/phy/enb/enb_dl_nr.h" #include "srslte/phy/phch/ra_nr.h" #include "srslte/phy/ue/ue_dl_nr.h" #include "srslte/phy/ue/ue_dl_nr_data.h" #include "srslte/phy/utils/debug.h" #include "srslte/phy/utils/random.h" #include "srslte/phy/utils/vector.h" #include static srslte_carrier_nr_t carrier = { 0, // cell_id 0, // numerology 100, // nof_prb 0 // start }; static uint32_t n_prb = 0; // Set to 0 for steering static uint32_t mcs = 30; // Set to 30 for steering static srslte_pdsch_cfg_nr_t pdsch_cfg = {}; static srslte_pdsch_grant_nr_t pdsch_grant = {}; void usage(char* prog) { printf("Usage: %s [pTL] \n", prog); printf("\t-p Number of grant PRB, set to 0 for steering [Default %d]\n", n_prb); printf("\t-m MCS PRB, set to >28 for steering [Default %d]\n", mcs); printf("\t-T Provide MCS table (64qam, 256qam, 64qamLowSE) [Default %s]\n", srslte_mcs_table_to_str(pdsch_cfg.sch_cfg.mcs_table)); printf("\t-L Provide number of layers [Default %d]\n", pdsch_cfg.sch_cfg.max_mimo_layers); printf("\t-v [set srslte_verbose to debug, default none]\n"); } int parse_args(int argc, char** argv) { int opt; while ((opt = getopt(argc, argv, "pmTLv")) != -1) { switch (opt) { case 'p': n_prb = (uint32_t)strtol(argv[optind], NULL, 10); break; case 'm': mcs = (uint32_t)strtol(argv[optind], NULL, 10); break; case 'T': pdsch_cfg.sch_cfg.mcs_table = srslte_mcs_table_from_str(argv[optind]); break; case 'L': pdsch_cfg.sch_cfg.max_mimo_layers = (uint32_t)strtol(argv[optind], NULL, 10); break; case 'v': srslte_verbose++; break; default: usage(argv[0]); return SRSLTE_ERROR; } } return SRSLTE_SUCCESS; } int main(int argc, char** argv) { int ret = SRSLTE_ERROR; srslte_enb_dl_nr_t enb_dl = {}; srslte_ue_dl_nr_t ue_dl = {}; srslte_pdsch_res_nr_t pdsch_res[SRSLTE_MAX_TB] = {}; srslte_random_t rand_gen = srslte_random_init(1234); srslte_dl_slot_cfg_t slot = {}; uint8_t* data_tx[SRSLTE_MAX_TB] = {}; uint8_t* data_rx[SRSLTE_MAX_CODEWORDS] = {}; cf_t* buffer = NULL; buffer = srslte_vec_cf_malloc(SRSLTE_SF_LEN_PRB(carrier.nof_prb)); if (buffer == NULL) { ERROR("Error malloc\n"); goto clean_exit; } srslte_ue_dl_nr_args_t ue_dl_args = {}; ue_dl_args.nof_rx_antennas = 1; ue_dl_args.pdsch.sch.disable_simd = true; ue_dl_args.pdsch.measure_evm = true; srslte_enb_dl_nr_args_t enb_dl_args = {}; enb_dl_args.nof_tx_antennas = 1; enb_dl_args.pdsch.sch.disable_simd = true; // Set default PDSCH configuration pdsch_cfg.sch_cfg.mcs_table = srslte_mcs_table_64qam; pdsch_cfg.sch_cfg.max_mimo_layers = 1; if (parse_args(argc, argv) < SRSLTE_SUCCESS) { goto clean_exit; } srslte_pdsch_args_t pdsch_args = {}; pdsch_args.sch.disable_simd = true; pdsch_args.measure_evm = true; if (srslte_ue_dl_nr_init(&ue_dl, &buffer, &ue_dl_args)) { ERROR("Error UE DL\n"); goto clean_exit; } if (srslte_enb_dl_nr_init(&enb_dl, &buffer, &enb_dl_args)) { ERROR("Error UE DL\n"); goto clean_exit; } if (srslte_ue_dl_nr_set_carrier(&ue_dl, &carrier, &pdsch_cfg.sch_cfg)) { ERROR("Error setting SCH NR carrier\n"); goto clean_exit; } if (srslte_enb_dl_nr_set_carrier(&enb_dl, &carrier, &pdsch_cfg.sch_cfg)) { ERROR("Error setting SCH NR carrier\n"); goto clean_exit; } for (uint32_t i = 0; i < 1; i++) { data_tx[i] = srslte_vec_u8_malloc(SRSLTE_SLOT_MAX_NOF_BITS_NR); data_rx[i] = srslte_vec_u8_malloc(SRSLTE_SLOT_MAX_NOF_BITS_NR); if (data_tx[i] == NULL || data_rx[i] == NULL) { ERROR("Error malloc\n"); goto clean_exit; } pdsch_res[i].payload = data_rx[i]; } srslte_softbuffer_tx_t softbuffer_tx = {}; srslte_softbuffer_rx_t softbuffer_rx = {}; if (srslte_softbuffer_tx_init_guru(&softbuffer_tx, SRSLTE_SCH_NR_MAX_NOF_CB_LDPC, SRSLTE_LDPC_MAX_LEN_ENCODED_CB) < SRSLTE_SUCCESS) { ERROR("Error init soft-buffer\n"); goto clean_exit; } if (srslte_softbuffer_rx_init_guru(&softbuffer_rx, SRSLTE_SCH_NR_MAX_NOF_CB_LDPC, SRSLTE_LDPC_MAX_LEN_ENCODED_CB) < SRSLTE_SUCCESS) { ERROR("Error init soft-buffer\n"); goto clean_exit; } // Use grant default A time resources with m=0 if (srslte_ue_dl_nr_pdsch_time_resource_default_A(0, pdsch_cfg.dmrs_cfg_typeA.typeA_pos, &pdsch_grant) < SRSLTE_SUCCESS) { ERROR("Error loading default grant\n"); goto clean_exit; } pdsch_grant.nof_layers = pdsch_cfg.sch_cfg.max_mimo_layers; pdsch_grant.dci_format = srslte_dci_format_nr_1_0; uint32_t n_prb_start = 1; uint32_t n_prb_end = carrier.nof_prb + 1; if (n_prb > 0) { n_prb_start = SRSLTE_MIN(n_prb, n_prb_end - 1); n_prb_end = SRSLTE_MIN(n_prb + 1, n_prb_end); } uint32_t mcs_start = 0; uint32_t mcs_end = pdsch_cfg.sch_cfg.mcs_table == srslte_mcs_table_256qam ? 28 : 29; if (mcs < mcs_end) { mcs_start = SRSLTE_MIN(mcs, mcs_end - 1); mcs_end = SRSLTE_MIN(mcs + 1, mcs_end); } for (n_prb = n_prb_start; n_prb < n_prb_end; n_prb++) { for (mcs = mcs_start; mcs < mcs_end; mcs++) { for (uint32_t n = 0; n < SRSLTE_MAX_PRB_NR; n++) { pdsch_grant.prb_idx[n] = (n < n_prb); } if (srslte_ra_nr_fill_tb(&pdsch_cfg, &pdsch_grant, mcs, &pdsch_grant.tb[0]) < SRSLTE_SUCCESS) { ERROR("Error filing tb\n"); goto clean_exit; } for (uint32_t tb = 0; tb < SRSLTE_MAX_TB; tb++) { // Skip TB if no allocated if (data_tx[tb] == NULL) { continue; } for (uint32_t i = 0; i < pdsch_grant.tb[tb].tbs; i++) { data_tx[tb][i] = (uint8_t)srslte_random_uniform_int_dist(rand_gen, 0, UINT8_MAX); } pdsch_grant.tb[tb].softbuffer.tx = &softbuffer_tx; } if (srslte_enb_dl_nr_pdsch_put(&enb_dl, &slot, &pdsch_cfg, &pdsch_grant, data_tx) < SRSLTE_SUCCESS) { ERROR("Error encoding\n"); goto clean_exit; } srslte_enb_dl_nr_gen_signal(&enb_dl); for (uint32_t tb = 0; tb < SRSLTE_MAX_TB; tb++) { pdsch_grant.tb[tb].softbuffer.rx = &softbuffer_rx; srslte_softbuffer_rx_reset(pdsch_grant.tb[tb].softbuffer.rx); } srslte_ue_dl_nr_estimate_fft(&ue_dl); if (srslte_ue_dl_nr_pdsch_get(&ue_dl, &slot, &pdsch_cfg, &pdsch_grant, pdsch_res) < SRSLTE_SUCCESS) { ERROR("Error decoding\n"); goto clean_exit; } if (pdsch_res->evm > 0.001f) { ERROR("Error PDSCH EVM is too high %f\n", pdsch_res->evm); goto clean_exit; } if (!pdsch_res[0].crc) { ERROR("Failed to match CRC; n_prb=%d; mcs=%d; TBS=%d;\n", n_prb, mcs, pdsch_grant.tb[0].tbs); goto clean_exit; } if (memcmp(data_tx[0], data_rx[0], pdsch_grant.tb[0].tbs / 8) != 0) { ERROR("Failed to match Tx/Rx data; n_prb=%d; mcs=%d; TBS=%d;\n", n_prb, mcs, pdsch_grant.tb[0].tbs); printf("Tx data: "); srslte_vec_fprint_byte(stdout, data_tx[0], pdsch_grant.tb[0].tbs / 8); printf("Rx data: "); srslte_vec_fprint_byte(stdout, data_rx[0], pdsch_grant.tb[0].tbs / 8); goto clean_exit; } printf("n_prb=%d; mcs=%d; TBS=%d; EVM=%f; PASSED!\n", n_prb, mcs, pdsch_grant.tb[0].tbs, pdsch_res[0].evm); } } ret = SRSLTE_SUCCESS; clean_exit: srslte_random_free(rand_gen); srslte_enb_dl_nr_free(&enb_dl); srslte_ue_dl_nr_free(&ue_dl); for (uint32_t i = 0; i < SRSLTE_MAX_CODEWORDS; i++) { if (data_tx[i]) { free(data_tx[i]); } if (data_rx[i]) { free(data_rx[i]); } } if (buffer) { free(buffer); } srslte_softbuffer_tx_free(&softbuffer_tx); srslte_softbuffer_rx_free(&softbuffer_rx); return ret; }