/* * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OpenAirInterface Software Alliance licenses this file to You under * the OAI Public License, Version 1.1 (the "License"); you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * * http://www.openairinterface.org/?page_id=698 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------------------- * For more information about the OpenAirInterface (OAI) Software Alliance: * contact@openairinterface.org */ #include <string.h> #include <math.h> #include <unistd.h> #include <fcntl.h> #include <sys/ioctl.h> #include <sys/mman.h> #include "common/ran_context.h" #include "common/config/config_userapi.h" #include "common/utils/LOG/log.h" #include "PHY/defs_gNB.h" #include "PHY/defs_nr_common.h" #include "PHY/defs_nr_UE.h" #include "PHY/phy_vars_nr_ue.h" #include "PHY/types.h" #include "PHY/INIT/phy_init.h" #include "PHY/MODULATION/modulation_UE.h" #include "PHY/MODULATION/nr_modulation.h" #include "PHY/NR_REFSIG/dmrs_nr.h" #include "PHY/NR_REFSIG/nr_mod_table.h" #include "PHY/NR_REFSIG/refsig_defs_ue.h" #include "PHY/NR_TRANSPORT/nr_dlsch.h" #include "PHY/NR_TRANSPORT/nr_sch_dmrs.h" #include "PHY/NR_TRANSPORT/nr_transport_proto.h" #include "PHY/NR_TRANSPORT/nr_ulsch.h" #include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h" #include "PHY/TOOLS/tools_defs.h" #include "SCHED_NR/fapi_nr_l1.h" #include "SCHED_NR/sched_nr.h" #include "SCHED_NR_UE/defs.h" #include "SCHED_NR_UE/fapi_nr_ue_l1.h" #include "openair1/SIMULATION/TOOLS/sim.h" #include "openair1/SIMULATION/RF/rf.h" #include "openair1/SIMULATION/NR_PHY/nr_unitary_defs.h" #include "openair2/RRC/NR/MESSAGES/asn1_msg.h" //#include "openair1/SIMULATION/NR_PHY/nr_dummy_functions.c" #include "openair2/LAYER2/NR_MAC_UE/mac_proto.h" #include "openair2/LAYER2/NR_MAC_gNB/mac_proto.h" #define inMicroS(a) (((double)(a))/(cpu_freq_GHz*1000.0)) #include "SIMULATION/LTE_PHY/common_sim.h" //#define DEBUG_ULSIM PHY_VARS_gNB *gNB; PHY_VARS_NR_UE *UE; RAN_CONTEXT_t RC; int32_t uplink_frequency_offset[MAX_NUM_CCs][4]; int sf_ahead=4 ; int sl_ahead=0; double cpuf; uint8_t nfapi_mode = 0; uint16_t NB_UE_INST = 1; uint64_t downlink_frequency[MAX_NUM_CCs][4]; int8_t nr_mac_rrc_data_ind_ue(const module_id_t module_id, const int CC_id, const uint8_t gNB_index, const int8_t channel, const uint8_t* pduP, const sdu_size_t pdu_len) { return 0; } int generate_dlsch_header(unsigned char *mac_header, unsigned char num_sdus, unsigned short *sdu_lengths, unsigned char *sdu_lcids, unsigned char drx_cmd, unsigned short timing_advance_cmd, unsigned char *ue_cont_res_id, unsigned char short_padding, unsigned short post_padding){return 0;} void pdcp_layer_init (void) {} boolean_t pdcp_data_ind( const protocol_ctxt_t *const ctxt_pP, const srb_flag_t srb_flagP, const MBMS_flag_t MBMS_flagP, const rb_id_t rb_idP, const sdu_size_t sdu_buffer_sizeP, mem_block_t *const sdu_buffer_pP ) { return(false);} void pdcp_run (const protocol_ctxt_t *const ctxt_pP) { return;} void nr_ip_over_LTE_DRB_preconfiguration(void){} int rrc_init_nr_global_param(void){return(0);} // needed for some functions uint16_t n_rnti = 0x1234; openair0_config_t openair0_cfg[MAX_CARDS]; int main(int argc, char **argv) { char c; int i; double SNR, snr0 = -2.0, snr1 = 2.0; double sigma, sigma_dB; double snr_step = .2; uint8_t snr1set = 0; int slot = 8, frame = 0; FILE *output_fd = NULL; //uint8_t write_output_file = 0; int trial, n_trials = 1, n_errors = 0, n_false_positive = 0, delay = 0; uint8_t n_tx = 1, n_rx = 1; //uint8_t transmission_mode = 1; //uint16_t Nid_cell = 0; channel_desc_t *gNB2UE; uint8_t extended_prefix_flag = 0; //int8_t interf1 = -21, interf2 = -21; FILE *input_fd = NULL; SCM_t channel_model = AWGN; //Rayleigh1_anticorr; uint16_t N_RB_DL = 106, N_RB_UL = 106, mu = 1; //unsigned char frame_type = 0; NR_DL_FRAME_PARMS *frame_parms; int loglvl = OAILOG_WARNING; //uint64_t SSB_positions=0x01; uint16_t nb_symb_sch = 12; int start_symbol = 2; uint16_t nb_rb = 50; uint8_t Imcs = 9; uint8_t precod_nbr_layers = 1; int gNB_id = 0; int ap; int tx_offset; double txlev_float; int32_t txlev; int start_rb = 0; int UE_id =0; // [hna] only works for UE_id = 0 because NUMBER_OF_NR_UE_MAX is set to 1 (phy_init_nr_gNB causes segmentation fault) float target_error_rate = 0.01; int print_perf = 0; cpuf = get_cpu_freq_GHz(); int msg3_flag = 0; UE_nr_rxtx_proc_t UE_proc; FILE *scg_fd=NULL; int ibwps=24; int ibwp_rboffset=41; if ( load_configmodule(argc,argv,CONFIG_ENABLECMDLINEONLY) == 0 ) { exit_fun("[NR_ULSIM] Error, configuration module init failed\n"); } //logInit(); randominit(0); while ((c = getopt(argc, argv, "a:b:c:d:ef:g:h:i:j:kl:m:n:p:r:s:y:z:F:M:N:PR:S:L:")) != -1) { printf("handling optarg %c\n",c); switch (c) { /*case 'd': frame_type = 1; break;*/ case 'a': start_symbol = atoi(optarg); AssertFatal(start_symbol >= 0 && start_symbol < 13,"start_symbol %d is not in 0..12\n",start_symbol); break; case 'b': nb_symb_sch = atoi(optarg); AssertFatal(nb_symb_sch > 0 && nb_symb_sch < 15,"start_symbol %d is not in 1..14\n",nb_symb_sch); break; case 'c': n_rnti = atoi(optarg); AssertFatal(n_rnti > 0 && n_rnti<=65535,"Illegal n_rnti %x\n",n_rnti); break; case 'd': delay = atoi(optarg); break; case 'e': msg3_flag = 1; break; case 'f': scg_fd = fopen(optarg, "r"); if (scg_fd == NULL) { printf("Error opening %s\n", optarg); exit(-1); } break; case 'g': switch ((char) *optarg) { case 'A': channel_model = SCM_A; break; case 'B': channel_model = SCM_B; break; case 'C': channel_model = SCM_C; break; case 'D': channel_model = SCM_D; break; case 'E': channel_model = EPA; break; case 'F': channel_model = EVA; break; case 'G': channel_model = ETU; break; default: printf("Unsupported channel model!\n"); exit(-1); } break; /*case 'i': interf1 = atoi(optarg); break; case 'j': interf2 = atoi(optarg); break;*/ case 'k': printf("Setting threequarter_fs_flag\n"); openair0_cfg[0].threequarter_fs= 1; break; case 'l': nb_symb_sch = atoi(optarg); break; case 'm': Imcs = atoi(optarg); break; case 'n': n_trials = atoi(optarg); break; case 'p': extended_prefix_flag = 1; break; case 'r': nb_rb = atoi(optarg); break; case 's': snr0 = atof(optarg); printf("Setting SNR0 to %f\n", snr0); break; /* case 'r': ricean_factor = pow(10,-.1*atof(optarg)); if (ricean_factor>1) { printf("Ricean factor must be between 0 and 1\n"); exit(-1); } break; */ /*case 'x': transmission_mode = atoi(optarg); break;*/ case 'y': n_tx = atoi(optarg); if ((n_tx == 0) || (n_tx > 2)) { printf("Unsupported number of tx antennas %d\n", n_tx); exit(-1); } break; case 'z': n_rx = atoi(optarg); if ((n_rx == 0) || (n_rx > 2)) { printf("Unsupported number of rx antennas %d\n", n_rx); exit(-1); } break; case 'F': input_fd = fopen(optarg, "r"); if (input_fd == NULL) { printf("Problem with filename %s\n", optarg); exit(-1); } break; case 'M': // SSB_positions = atoi(optarg); break; case 'N': // Nid_cell = atoi(optarg); break; case 'R': N_RB_DL = atoi(optarg); N_RB_UL = N_RB_DL; break; case 'S': snr1 = atof(optarg); snr1set = 1; printf("Setting SNR1 to %f\n", snr1); break; case 'P': print_perf=1; opp_enabled=1; break; case 'L': loglvl = atoi(optarg); break; default: case 'h': printf("%s -h(elp) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -t Delayspread -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant -i Intefrence0 -j Interference1 -A interpolation_file -C(alibration offset dB) -N CellId\n", argv[0]); //printf("-d Use TDD\n"); printf("-d Introduce delay in terms of number of samples\n"); printf("-f Number of frames to simulate\n"); printf("-g [A,B,C,D,E,F,G] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) models (ignores delay spread and Ricean factor)\n"); printf("-h This message\n"); //printf("-i Relative strength of first intefering eNB (in dB) - cell_id mod 3 = 1\n"); //printf("-j Relative strength of second intefering eNB (in dB) - cell_id mod 3 = 2\n"); printf("-s Starting SNR, runs from SNR0 to SNR0 + 10 dB if ending SNR isn't given\n"); printf("-m MCS value\n"); printf("-n Number of trials to simulate\n"); printf("-p Use extended prefix mode\n"); printf("-t Delay spread for multipath channel\n"); //printf("-x Transmission mode (1,2,6 for the moment)\n"); printf("-y Number of TX antennas used in eNB\n"); printf("-z Number of RX antennas used in UE\n"); printf("-A Interpolation_filname Run with Abstraction to generate Scatter plot using interpolation polynomial in file\n"); //printf("-C Generate Calibration information for Abstraction (effective SNR adjustment to remove Pe bias w.r.t. AWGN)\n"); printf("-F Input filename (.txt format) for RX conformance testing\n"); printf("-G raw file containing RRC configuration (generated by gNB)\n"); printf("-M Multiple SSB positions in burst\n"); printf("-N Nid_cell\n"); printf("-O oversampling factor (1,2,4,8,16)\n"); printf("-R N_RB_DL\n"); printf("-S Ending SNR, runs from SNR0 to SNR1\n"); printf("-P Print ULSCH performances\n"); exit(-1); break; } } logInit(); set_glog(loglvl); T_stdout = 1; get_softmodem_params()->phy_test = 1; get_softmodem_params()->do_ra = 0; get_softmodem_params()->usim_test = 1; if (snr1set == 0) snr1 = snr0 + 10; gNB2UE = new_channel_desc_scm(n_tx, n_rx, channel_model, 61.44e6, //N_RB2sampling_rate(N_RB_DL), 40e6, //N_RB2channel_bandwidth(N_RB_DL), 0, 0, 0); if (gNB2UE == NULL) { printf("Problem generating channel model. Exiting.\n"); exit(-1); } RC.gNB = (PHY_VARS_gNB **) malloc(sizeof(PHY_VARS_gNB *)); RC.gNB[0] = malloc(sizeof(PHY_VARS_gNB)); gNB = RC.gNB[0]; //gNB_config = &gNB->gNB_config; //memset((void *)&gNB->UL_INFO,0,sizeof(gNB->UL_INFO)); gNB->UL_INFO.rx_ind.pdu_list = (nfapi_nr_rx_data_pdu_t *)malloc(NB_UE_INST*sizeof(nfapi_nr_rx_data_pdu_t)); gNB->UL_INFO.crc_ind.crc_list = (nfapi_nr_crc_t *)malloc(NB_UE_INST*sizeof(nfapi_nr_crc_t)); gNB->UL_INFO.rx_ind.number_of_pdus = 0; gNB->UL_INFO.crc_ind.number_crcs = 0; frame_parms = &gNB->frame_parms; //to be initialized I suppose (maybe not necessary for PBCH) frame_parms->nb_antennas_tx = n_tx; frame_parms->nb_antennas_rx = n_rx; frame_parms->N_RB_DL = N_RB_DL; frame_parms->N_RB_UL = N_RB_UL; frame_parms->Ncp = extended_prefix_flag ? EXTENDED : NORMAL; RC.nb_nr_macrlc_inst = 1; RC.nb_nr_mac_CC = (int*)malloc(RC.nb_nr_macrlc_inst*sizeof(int)); for (i = 0; i < RC.nb_nr_macrlc_inst; i++) RC.nb_nr_mac_CC[i] = 1; mac_top_init_gNB(); //gNB_MAC_INST* gNB_mac = RC.nrmac[0]; gNB_RRC_INST rrc; memset((void*)&rrc,0,sizeof(rrc)); rrc.carrier.servingcellconfigcommon = calloc(1,sizeof(*rrc.carrier.servingcellconfigcommon)); NR_ServingCellConfigCommon_t *scc = rrc.carrier.servingcellconfigcommon; NR_CellGroupConfig_t *secondaryCellGroup=calloc(1,sizeof(*secondaryCellGroup)); prepare_scc(rrc.carrier.servingcellconfigcommon); uint64_t ssb_bitmap; fill_scc(rrc.carrier.servingcellconfigcommon,&ssb_bitmap,N_RB_DL,N_RB_DL,mu,mu); fill_default_secondaryCellGroup(scc, secondaryCellGroup, 0, 1, n_tx, 0); fix_scc(scc,ssb_bitmap); xer_fprint(stdout, &asn_DEF_NR_CellGroupConfig, (const void*)secondaryCellGroup); AssertFatal((gNB->if_inst = NR_IF_Module_init(0))!=NULL,"Cannot register interface"); gNB->if_inst->NR_PHY_config_req = nr_phy_config_request; // common configuration rrc_mac_config_req_gNB(0,0,1,scc,0,0,NULL); // UE dedicated configuration rrc_mac_config_req_gNB(0,0,1,NULL,1,secondaryCellGroup->spCellConfig->reconfigurationWithSync->newUE_Identity,secondaryCellGroup); phy_init_nr_gNB(gNB,0,0); N_RB_DL = gNB->frame_parms.N_RB_DL; NR_BWP_Uplink_t *ubwp=secondaryCellGroup->spCellConfig->spCellConfigDedicated->uplinkConfig->uplinkBWP_ToAddModList->list.array[0]; //crcTableInit(); //nr_phy_config_request_sim(gNB, N_RB_DL, N_RB_UL, mu, Nid_cell, SSB_positions); //configure UE UE = malloc(sizeof(PHY_VARS_NR_UE)); memset((void*)UE,0,sizeof(PHY_VARS_NR_UE)); PHY_vars_UE_g = malloc(sizeof(PHY_VARS_NR_UE**)); PHY_vars_UE_g[0] = malloc(sizeof(PHY_VARS_NR_UE*)); PHY_vars_UE_g[0][0] = UE; memcpy(&UE->frame_parms, frame_parms, sizeof(NR_DL_FRAME_PARMS)); //phy_init_nr_top(frame_parms); if (init_nr_ue_signal(UE, 1, 0) != 0) { printf("Error at UE NR initialisation\n"); exit(-1); } //nr_init_frame_parms_ue(&UE->frame_parms); init_nr_ue_transport(UE, 0); /* for (int sf = 0; sf < 2; sf++) { for (i = 0; i < 2; i++) { UE->ulsch[sf][0][i] = new_nr_ue_ulsch(N_RB_UL, 8, 0); if (!UE->ulsch[sf][0][i]) { printf("Can't get ue ulsch structures\n"); exit(-1); } } } */ nr_l2_init_ue(NULL); NR_UE_MAC_INST_t* UE_mac = get_mac_inst(0); UE->if_inst = nr_ue_if_module_init(0); UE->if_inst->scheduled_response = nr_ue_scheduled_response; UE->if_inst->phy_config_request = nr_ue_phy_config_request; UE->if_inst->dl_indication = nr_ue_dl_indication; UE->if_inst->ul_indication = nr_ue_ul_indication; UE_mac->if_module = nr_ue_if_module_init(0); //Configure UE rrc.carrier.MIB = (uint8_t*) malloc(4); rrc.carrier.sizeof_MIB = do_MIB_NR(&rrc,0); nr_rrc_mac_config_req_ue(0,0,0,rrc.carrier.mib.message.choice.mib,secondaryCellGroup); nr_ue_phy_config_request(&UE_mac->phy_config); unsigned char harq_pid = 0; NR_gNB_ULSCH_t *ulsch_gNB = gNB->ulsch[UE_id][0]; //nfapi_nr_ul_config_ulsch_pdu *rel15_ul = &ulsch_gNB->harq_processes[harq_pid]->ulsch_pdu; nfapi_nr_ul_tti_request_t *UL_tti_req = malloc(sizeof(*UL_tti_req)); NR_Sched_Rsp_t *Sched_INFO = malloc(sizeof(*Sched_INFO)); memset((void*)Sched_INFO,0,sizeof(*Sched_INFO)); Sched_INFO->UL_tti_req=UL_tti_req; nfapi_nr_pusch_pdu_t *pusch_pdu = &UL_tti_req->pdus_list[0].pusch_pdu; NR_UE_ULSCH_t **ulsch_ue = UE->ulsch[0][0]; unsigned char *estimated_output_bit; unsigned char *test_input_bit; uint32_t errors_decoding = 0; uint32_t errors_scrambling = 0; test_input_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384); estimated_output_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384); nr_scheduled_response_t scheduled_response; fapi_nr_ul_config_request_t ul_config; unsigned int TBS; uint16_t number_dmrs_symbols = 0; unsigned int available_bits; uint8_t nb_re_dmrs; unsigned char mod_order; uint16_t code_rate; uint8_t ptrs_mcs1 = 2; uint8_t ptrs_mcs2 = 4; uint8_t ptrs_mcs3 = 10; uint16_t n_rb0 = 25; uint16_t n_rb1 = 75; uint8_t mcs_table = 0; uint16_t pdu_bit_map = PUSCH_PDU_BITMAP_PUSCH_DATA; // | PUSCH_PDU_BITMAP_PUSCH_PTRS; uint8_t length_dmrs = pusch_len1; // [hna] remove dmrs struct uint16_t l_prime_mask = get_l_prime(nb_symb_sch, typeB, pusch_dmrs_pos0, length_dmrs); // [hna] remove dmrs struct uint8_t ptrs_time_density = get_L_ptrs(ptrs_mcs1, ptrs_mcs2, ptrs_mcs3, Imcs, mcs_table); uint8_t ptrs_freq_density = get_K_ptrs(n_rb0, n_rb1, nb_rb); if(1<<ptrs_time_density >= nb_symb_sch) pdu_bit_map &= ~PUSCH_PDU_BITMAP_PUSCH_PTRS; // disable PUSCH PTRS for (i = 0; i < nb_symb_sch; i++) { number_dmrs_symbols += (l_prime_mask >> i) & 0x01; } mod_order = nr_get_Qm_ul(Imcs, 0); code_rate = nr_get_code_rate_ul(Imcs, 0); printf("\n"); for (int i=0;i<16;i++) printf("%f\n",gaussdouble(0.0,1.0)); for (SNR = snr0; SNR < snr1; SNR += snr_step) { varArray_t *table_rx=initVarArray(1000,sizeof(double)); reset_meas(&gNB->phy_proc_rx); reset_meas(&gNB->ulsch_decoding_stats); reset_meas(&gNB->ulsch_deinterleaving_stats); reset_meas(&gNB->ulsch_rate_unmatching_stats); reset_meas(&gNB->ulsch_ldpc_decoding_stats); reset_meas(&gNB->ulsch_unscrambling_stats); reset_meas(&gNB->ulsch_channel_estimation_stats); reset_meas(&gNB->ulsch_llr_stats); reset_meas(&gNB->ulsch_channel_compensation_stats); reset_meas(&gNB->ulsch_rbs_extraction_stats); UE_proc.nr_tti_tx = slot; UE_proc.frame_tx = frame; // --------- setting parameters for gNB -------- /* rel15_ul->rnti = n_rnti; rel15_ul->ulsch_pdu_rel15.start_rb = start_rb; rel15_ul->ulsch_pdu_rel15.number_rbs = nb_rb; rel15_ul->ulsch_pdu_rel15.start_symbol = start_symbol; rel15_ul->ulsch_pdu_rel15.number_symbols = nb_symb_sch; rel15_ul->ulsch_pdu_rel15.length_dmrs = length_dmrs; rel15_ul->ulsch_pdu_rel15.Qm = mod_order; rel15_ul->ulsch_pdu_rel15.mcs = Imcs; rel15_ul->ulsch_pdu_rel15.rv = 0; rel15_ul->ulsch_pdu_rel15.ndi = 0; rel15_ul->ulsch_pdu_rel15.n_layers = precod_nbr_layers; rel15_ul->ulsch_pdu_rel15.R = code_rate; /////////////////////////////////////////////////// */ UL_tti_req->SFN = frame; UL_tti_req->Slot = slot; UL_tti_req->n_pdus = 1; UL_tti_req->pdus_list[0].pdu_type = NFAPI_NR_UL_CONFIG_PUSCH_PDU_TYPE; UL_tti_req->pdus_list[0].pdu_size = sizeof(nfapi_nr_pusch_pdu_t); memset(pusch_pdu,0,sizeof(nfapi_nr_pusch_pdu_t)); int abwp_size = NRRIV2BW(ubwp->bwp_Common->genericParameters.locationAndBandwidth,275); int abwp_start = NRRIV2PRBOFFSET(ubwp->bwp_Common->genericParameters.locationAndBandwidth,275); int ibwp_size = ibwps; int ibwp_start = ibwp_rboffset; if (msg3_flag == 1) { if ((ibwp_start < abwp_start) || (ibwp_size > abwp_size)) pusch_pdu->bwp_start = abwp_start; else pusch_pdu->bwp_start = ibwp_start; pusch_pdu->bwp_size = ibwp_size; start_rb += (ibwp_start - abwp_start); printf("msg3: ibwp_size %d, abwp_size %d, ibwp_start %d, abwp_start %d\n", ibwp_size,abwp_size,ibwp_start,abwp_start); } else { pusch_pdu->bwp_start = abwp_start; pusch_pdu->bwp_size = abwp_size; } pusch_pdu->pdu_bit_map = pdu_bit_map; pusch_pdu->rnti = n_rnti; pusch_pdu->mcs_index = Imcs; pusch_pdu->mcs_table = mcs_table; pusch_pdu->target_code_rate = code_rate; pusch_pdu->qam_mod_order = mod_order; pusch_pdu->transform_precoding = 1; pusch_pdu->data_scrambling_id = *scc->physCellId; pusch_pdu->nrOfLayers = 1; pusch_pdu->ul_dmrs_symb_pos = l_prime_mask << start_symbol; pusch_pdu->dmrs_config_type = 0; pusch_pdu->ul_dmrs_scrambling_id = *scc->physCellId; pusch_pdu->scid = 0; pusch_pdu->dmrs_ports = 1; pusch_pdu->num_dmrs_cdm_grps_no_data = 1; pusch_pdu->resource_alloc = 1; pusch_pdu->rb_start = start_rb; pusch_pdu->rb_size = nb_rb; pusch_pdu->vrb_to_prb_mapping = 0; pusch_pdu->frequency_hopping = 0; pusch_pdu->uplink_frequency_shift_7p5khz = 0; pusch_pdu->start_symbol_index = start_symbol; pusch_pdu->nr_of_symbols = nb_symb_sch; pusch_pdu->pusch_data.rv_index = 0; pusch_pdu->pusch_data.harq_process_id = 0; pusch_pdu->pusch_data.new_data_indicator = 0; pusch_pdu->pusch_data.num_cb = 0; pusch_pdu->pusch_ptrs.ptrs_time_density = ptrs_time_density; pusch_pdu->pusch_ptrs.ptrs_freq_density = ptrs_freq_density; pusch_pdu->pusch_ptrs.ptrs_ports_list = (nfapi_nr_ptrs_ports_t *) malloc(2*sizeof(nfapi_nr_ptrs_ports_t)); pusch_pdu->pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset = 0; // prepare ULSCH/PUSCH reception nr_schedule_response(Sched_INFO); // --------- setting parameters for UE -------- scheduled_response.module_id = 0; scheduled_response.CC_id = 0; scheduled_response.frame = frame; scheduled_response.slot = slot; scheduled_response.dl_config = NULL; scheduled_response.ul_config = &ul_config; scheduled_response.dl_config = NULL; ul_config.slot = slot; ul_config.number_pdus = 1; ul_config.ul_config_list[0].pdu_type = FAPI_NR_UL_CONFIG_TYPE_PUSCH; ul_config.ul_config_list[0].pusch_config_pdu.rnti = n_rnti; ul_config.ul_config_list[0].pusch_config_pdu.pdu_bit_map = pdu_bit_map; ul_config.ul_config_list[0].pusch_config_pdu.rb_size = nb_rb; ul_config.ul_config_list[0].pusch_config_pdu.rb_start = start_rb; ul_config.ul_config_list[0].pusch_config_pdu.nr_of_symbols = nb_symb_sch; ul_config.ul_config_list[0].pusch_config_pdu.start_symbol_index = start_symbol; ul_config.ul_config_list[0].pusch_config_pdu.ul_dmrs_symb_pos = l_prime_mask << start_symbol; ul_config.ul_config_list[0].pusch_config_pdu.dmrs_config_type = 0; ul_config.ul_config_list[0].pusch_config_pdu.mcs_index = Imcs; ul_config.ul_config_list[0].pusch_config_pdu.mcs_table = mcs_table; ul_config.ul_config_list[0].pusch_config_pdu.num_dmrs_cdm_grps_no_data = 1; ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.new_data_indicator = 0; ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.rv_index = 0; ul_config.ul_config_list[0].pusch_config_pdu.nrOfLayers = precod_nbr_layers; ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.harq_process_id = harq_pid; ul_config.ul_config_list[0].pusch_config_pdu.pusch_ptrs.ptrs_time_density = ptrs_time_density; ul_config.ul_config_list[0].pusch_config_pdu.pusch_ptrs.ptrs_freq_density = ptrs_freq_density; ul_config.ul_config_list[0].pusch_config_pdu.pusch_ptrs.ptrs_ports_list = (nfapi_nr_ue_ptrs_ports_t *) malloc(2*sizeof(nfapi_nr_ue_ptrs_ports_t)); ul_config.ul_config_list[0].pusch_config_pdu.pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset = 0; //there are plenty of other parameters that we don't seem to be using for now. e.g. ul_config.ul_config_list[0].pusch_config_pdu.absolute_delta_PUSCH = 0; nb_re_dmrs = ((ul_config.ul_config_list[0].pusch_config_pdu.dmrs_config_type == pusch_dmrs_type1) ? 6 : 4); available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, number_dmrs_symbols, mod_order, 1); TBS = nr_compute_tbs(mod_order, code_rate, nb_rb, nb_symb_sch, nb_re_dmrs * number_dmrs_symbols, 0, 0, precod_nbr_layers); pusch_pdu->pusch_data.tb_size = TBS>>3; ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.tb_size = TBS; nr_fill_ulsch(gNB,frame,slot,pusch_pdu); int slot_offset = frame_parms->get_samples_slot_timestamp(slot,frame_parms,0);// - (int)(800*factor); int slot_length = slot_offset - frame_parms->get_samples_slot_timestamp(slot-1,frame_parms,0); for (int i=0;i<(TBS>>3);i++) ulsch_ue[0]->harq_processes[harq_pid]->a[i]=i&0xff; double scale = 1; if (input_fd == NULL) { if (SNR==snr0) { // set FAPI parameters for UE, put them in the scheduled response and call nr_ue_scheduled_response(&scheduled_response); /////////////////////////phy_procedures_nr_ue_TX/////////////////////// /////////// phy_procedures_nrUE_TX(UE, &UE_proc, gNB_id, 0); if (n_trials==1) { LOG_M("txsig0.m","txs0", UE->common_vars.txdata[0],frame_parms->samples_per_subframe*10,1,1); LOG_M("txsig0F.m","txs0F", UE->common_vars.txdataF[0],frame_parms->ofdm_symbol_size*14,1,1); } /////////// //////////////////////////////////////////////////// tx_offset = frame_parms->get_samples_slot_timestamp(slot,frame_parms,0); txlev = signal_energy(&UE->common_vars.txdata[0][tx_offset + 5*frame_parms->ofdm_symbol_size + 4*frame_parms->nb_prefix_samples + frame_parms->nb_prefix_samples0], frame_parms->ofdm_symbol_size + frame_parms->nb_prefix_samples); txlev_float = (double)txlev/scale; // output of signal_energy is fixed point representation //AWGN } } else n_trials = 1; sigma_dB = 10*log10(txlev_float)-SNR; sigma = pow(10,sigma_dB/10); printf("txlev_float %f, sigma_dB %f\n",10*log10(txlev_float),sigma_dB); n_errors = 0; n_false_positive = 0; errors_scrambling = 0; errors_decoding = 0; int error_flag; for (trial = 0; trial < n_trials; trial++) { error_flag = 0; //---------------------------------------------------------- //------------------------ add noise ----------------------- //---------------------------------------------------------- if (input_fd == NULL ) { for (i=0; i<slot_length; i++) { for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) { ((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i) + (delay*2)] = (int16_t)((double)(((int16_t *)&UE->common_vars.txdata[ap][slot_offset])[(i<<1)])/sqrt(scale) + (sqrt(sigma/2)*gaussdouble(0.0,1.0))); // convert to fixed point ((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i)+1 + (delay*2)] = (int16_t)((double)(((int16_t *)&UE->common_vars.txdata[ap][slot_offset])[(i<<1)+1])/sqrt(scale) + (sqrt(sigma/2)*gaussdouble(0.0,1.0))); } } } else { AssertFatal(frame_parms->nb_antennas_rx == 1, "nb_ant != 1\n"); // 800 samples is N_TA_OFFSET for FR1 @ 30.72 Ms/s, AssertFatal(frame_parms->subcarrier_spacing==30000,"only 30 kHz for file input for now (%d)\n",frame_parms->subcarrier_spacing); double factor = 1; if (openair0_cfg[0].threequarter_fs== 1) factor =.75; int ta_offset=1600; if (N_RB_DL <217) ta_offset=800; else if (N_RB_DL < 106) ta_offset = 400; fread((void*)&gNB->common_vars.rxdata[0][slot_offset], sizeof(int16_t), slot_length<<1, input_fd); for (int i=0;i<16;i+=2) printf("slot_offset %d : %d,%d\n", slot_offset, ((int16_t*)&gNB->common_vars.rxdata[0][slot_offset])[i], ((int16_t*)&gNB->common_vars.rxdata[0][slot_offset])[1+i]); fclose(input_fd); } //////////////////////////////////////////////////////////// //---------------------------------------------------------- //------------------- gNB phy procedures ------------------- //---------------------------------------------------------- gNB->UL_INFO.rx_ind.number_of_pdus = 0; gNB->UL_INFO.crc_ind.number_crcs = 0; start_meas(&gNB->phy_proc_rx); phy_procedures_gNB_common_RX(gNB, frame, slot); if (n_trials==1) { LOG_M("rxsig0.m","rx0",&gNB->common_vars.rxdata[0][0],frame_parms->samples_per_subframe*10,1,1); LOG_M("rxsigF0.m","rxsF0",gNB->common_vars.rxdataF[0]+start_symbol*frame_parms->ofdm_symbol_size,nb_symb_sch*frame_parms->ofdm_symbol_size,1,1); } phy_procedures_gNB_uespec_RX(gNB, frame, slot); if (n_trials == 1) { LOG_M("rxsigF0_ext.m","rxsF0_ext", &gNB->pusch_vars[0]->rxdataF_ext[0][(start_symbol+1)*NR_NB_SC_PER_RB * pusch_pdu->rb_size],(nb_symb_sch-1)*NR_NB_SC_PER_RB * pusch_pdu->rb_size,1,1); LOG_M("chestF0.m","chF0", &gNB->pusch_vars[0]->ul_ch_estimates[0][start_symbol*frame_parms->ofdm_symbol_size],frame_parms->ofdm_symbol_size,1,1); LOG_M("chestF0_ext.m","chF0_ext", &gNB->pusch_vars[0]->ul_ch_estimates_ext[0][(start_symbol+1)*NR_NB_SC_PER_RB * pusch_pdu->rb_size],(nb_symb_sch-1)*NR_NB_SC_PER_RB * pusch_pdu->rb_size,1,1); LOG_M("rxsigF0_comp.m","rxsF0_comp", &gNB->pusch_vars[0]->rxdataF_comp[0][(start_symbol+1)*NR_NB_SC_PER_RB * pusch_pdu->rb_size],(nb_symb_sch-1)*NR_NB_SC_PER_RB * pusch_pdu->rb_size,1,1); } start_meas(&gNB->phy_proc_rx); //////////////////////////////////////////////////////////// if (gNB->ulsch[0][0]->last_iteration_cnt >= gNB->ulsch[0][0]->max_ldpc_iterations+1) { error_flag = 1; n_errors++; } //---------------------------------------------------------- //----------------- count and print errors ----------------- //---------------------------------------------------------- for (i = 0; i < available_bits; i++) { if(((ulsch_ue[0]->g[i] == 0) && (gNB->pusch_vars[UE_id]->llr[i] <= 0)) || ((ulsch_ue[0]->g[i] == 1) && (gNB->pusch_vars[UE_id]->llr[i] >= 0))) { /*if(errors_scrambling == 0) printf("\x1B[34m" "[frame %d][trial %d]\t1st bit in error in unscrambling = %d\n" "\x1B[0m", frame, trial, i);*/ errors_scrambling++; } } if (errors_scrambling > 0) { if (n_trials==1) printf("\x1B[31m""[frame %d][trial %d]\tnumber of errors in unscrambling = %u\n" "\x1B[0m", frame, trial, errors_scrambling); } for (i = 0; i < TBS; i++) { estimated_output_bit[i] = (ulsch_gNB->harq_processes[harq_pid]->b[i/8] & (1 << (i & 7))) >> (i & 7); test_input_bit[i] = (ulsch_ue[0]->harq_processes[harq_pid]->b[i/8] & (1 << (i & 7))) >> (i & 7); if (estimated_output_bit[i] != test_input_bit[i]) { /*if(errors_decoding == 0) printf("\x1B[34m""[frame %d][trial %d]\t1st bit in error in decoding = %d\n" "\x1B[0m", frame, trial, i);*/ errors_decoding++; } } if (n_trials == 1) { for (int r=0;r<ulsch_ue[0]->harq_processes[harq_pid]->C;r++) for (int i=0;i<ulsch_ue[0]->harq_processes[harq_pid]->K>>3;i++) { if ((ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]) != 0) printf("************"); printf("r %d: in[%d] %x, out[%d] %x (%x)\n",r, i,ulsch_ue[0]->harq_processes[harq_pid]->c[r][i], i,ulsch_gNB->harq_processes[harq_pid]->c[r][i], ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]); } } if (errors_decoding > 0 && error_flag == 0) { n_false_positive++; if (n_trials==1) printf("\x1B[31m""[frame %d][trial %d]\tnumber of errors in decoding = %u\n" "\x1B[0m", frame, trial, errors_decoding); } } // trial loop printf("*****************************************\n"); printf("SNR %f: n_errors (negative CRC) = %d/%d, false_positive %d/%d, errors_scrambling %u/%u\n", SNR, n_errors, n_trials, n_false_positive, n_trials, errors_scrambling, available_bits*n_trials); printf("\n"); printf("SNR %f: Channel BLER %e, Channel BER %e\n", SNR,(double)n_errors/n_trials,(double)errors_scrambling/available_bits/n_trials); printf("*****************************************\n"); printf("\n"); if (print_perf==1) { printDistribution(&gNB->phy_proc_rx,table_rx,"Total PHY proc rx"); printStatIndent(&gNB->ulsch_channel_estimation_stats,"ULSCH channel estimation time"); printStatIndent(&gNB->ulsch_rbs_extraction_stats,"ULSCH rbs extraction time"); printStatIndent(&gNB->ulsch_channel_compensation_stats,"ULSCH channel compensation time"); printStatIndent(&gNB->ulsch_llr_stats,"ULSCH llr computation"); printStatIndent(&gNB->ulsch_unscrambling_stats,"ULSCH unscrambling"); printStatIndent(&gNB->ulsch_decoding_stats,"ULSCH total decoding time"); printStatIndent2(&gNB->ulsch_deinterleaving_stats,"ULSCH deinterleaving"); printStatIndent2(&gNB->ulsch_rate_unmatching_stats,"ULSCH rate matching rx"); printStatIndent2(&gNB->ulsch_ldpc_decoding_stats,"ULSCH ldpc decoding"); printf("\n"); } if(n_trials==1) break; if ((float)n_errors/(float)n_trials <= target_error_rate) { printf("*************\n"); printf("PUSCH test OK\n"); printf("*************\n"); break; } } // SNR loop printf("\n"); free(test_input_bit); free(estimated_output_bit); if (output_fd) fclose(output_fd); if (input_fd) fclose(input_fd); if (scg_fd) fclose(scg_fd); return (n_errors); }