/* * 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 <fcntl.h> #include <math.h> #include <string.h> #include <sys/ioctl.h> #include <sys/mman.h> #include <unistd.h> #include "common/ran_context.h" #include "common/config/config_userapi.h" #include "common/utils/LOG/log.h" #include "openair2/LAYER2/NR_MAC_gNB/mac_proto.h" #include "openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h" #include "openair2/LAYER2/NR_MAC_UE/mac_defs.h" #include "openair2/LAYER2/NR_MAC_UE/mac_extern.h" #include "openair2/LAYER2/NR_MAC_UE/mac_proto.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_eNB.h" #include "PHY/MODULATION/modulation_UE.h" #include "PHY/NR_REFSIG/nr_mod_table.h" #include "PHY/NR_REFSIG/refsig_defs_ue.h" #include "PHY/NR_TRANSPORT/nr_transport.h" #include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.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 "NR_PHY_INTERFACE/NR_IF_Module.h" #include "NR_UE_PHY_INTERFACE/NR_IF_Module.h" #include "LAYER2/NR_MAC_UE/mac_proto.h" //#include "LAYER2/NR_MAC_gNB/mac_proto.h" //#include "openair2/LAYER2/NR_MAC_UE/mac_proto.h" #include "openair2/LAYER2/NR_MAC_gNB/mac_proto.h" #include "NR_asn_constant.h" #include "RRC/NR/MESSAGES/asn1_msg.h" #include "openair1/SIMULATION/RF/rf.h" #include "openair1/SIMULATION/TOOLS/sim.h" #include "openair1/SIMULATION/NR_PHY/nr_unitary_defs.h" //#include "openair1/SIMULATION/NR_PHY/nr_dummy_functions.c" #include "NR_RRCReconfiguration.h" PHY_VARS_gNB *gNB; PHY_VARS_NR_UE *UE; RAN_CONTEXT_t RC; int32_t uplink_frequency_offset[MAX_NUM_CCs][4]; double cpuf; int sf_ahead=4; // dummy functions int dummy_nr_ue_ul_indication(nr_uplink_indication_t *ul_info) { return(0); } void pdcp_run (const protocol_ctxt_t *const ctxt_pP) { return;} int nfapi_mode=0; 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; } uint16_t NB_UE_INST = 1; //Dummy Functions //lte_subframe_t subframe_select(LTE_DL_FRAME_PARMS *frame_parms, unsigned char subframe) {return(SF_DL);} int rlc_module_init (int eNB_id) {return(0);} void pdcp_layer_init(void) {} int rrc_init_nr_global_param(void){return(0);} void config_common(int Mod_idP, NR_ServingCellConfigCommon_t *scc ); uint64_t get_softmodem_optmask(void) {return 0;} mac_rlc_status_resp_t mac_rlc_status_ind( const module_id_t module_idP, const rnti_t rntiP, const eNB_index_t eNB_index, const frame_t frameP, const sub_frame_t subframeP, const eNB_flag_t enb_flagP, const MBMS_flag_t MBMS_flagP, const logical_chan_id_t channel_idP, const tb_size_t tb_sizeP, const uint32_t sourceL2Id, const uint32_t destinationL2Id) {mac_rlc_status_resp_t mac_rlc_status_resp={0}; return mac_rlc_status_resp;} tbs_size_t mac_rlc_data_req( const module_id_t module_idP, const rnti_t rntiP, const eNB_index_t eNB_index, const frame_t frameP, const eNB_flag_t enb_flagP, const MBMS_flag_t MBMS_flagP, const logical_chan_id_t channel_idP, const tb_size_t tb_sizeP, char *buffer_pP, const uint32_t sourceL2Id, const uint32_t destinationL2Id ) {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 nr_ip_over_LTE_DRB_preconfiguration(void){} void mac_rlc_data_ind ( const module_id_t module_idP, const rnti_t rntiP, const eNB_index_t eNB_index, const frame_t frameP, const eNB_flag_t enb_flagP, const MBMS_flag_t MBMS_flagP, const logical_chan_id_t channel_idP, char *buffer_pP, const tb_size_t tb_sizeP, num_tb_t num_tbP, crc_t *crcs_pP) {} // needed for some functions openair0_config_t openair0_cfg[MAX_CARDS]; int main(int argc, char **argv) { char c; int i,aa;//,l; double sigma2, sigma2_dB=10, SNR, snr0=-2.0, snr1=2.0; uint8_t snr1set=0; int **txdata; double **s_re,**s_im,**r_re,**r_im; //double iqim = 0.0; //unsigned char pbch_pdu[6]; // int sync_pos, sync_pos_slot; // FILE *rx_frame_file; FILE *output_fd = NULL; //uint8_t write_output_file=0; //int result; //int freq_offset; // int subframe_offset; // char fname[40], vname[40]; int trial, n_trials = 1, n_errors = 0, n_false_positive = 0; //int n_errors2, n_alamouti; uint8_t transmission_mode = 1,n_tx=1,n_rx=1; uint16_t Nid_cell=0; uint64_t SSB_positions=0x01; channel_desc_t *gNB2UE; //uint32_t nsymb,tx_lev,tx_lev1 = 0,tx_lev2 = 0; //uint8_t extended_prefix_flag=0; //int8_t interf1=-21,interf2=-21; FILE *input_fd=NULL,*pbch_file_fd=NULL; //char input_val_str[50],input_val_str2[50]; //uint8_t frame_mod4,num_pdcch_symbols = 0; SCM_t channel_model=AWGN;//Rayleigh1_anticorr; //double pbch_sinr; //int pbch_tx_ant; int N_RB_DL=106,mu=1; nfapi_nr_dl_tti_pdsch_pdu_rel15_t dlsch_config; uint16_t ssb_periodicity = 10; //unsigned char frame_type = 0; unsigned char pbch_phase = 0; int frame=0,slot=1; int frame_length_complex_samples; int frame_length_complex_samples_no_prefix; int slot_length_complex_samples_no_prefix; NR_DL_FRAME_PARMS *frame_parms; UE_nr_rxtx_proc_t UE_proc; NR_Sched_Rsp_t Sched_INFO; gNB_MAC_INST *gNB_mac; NR_UE_MAC_INST_t *UE_mac; int cyclic_prefix_type = NFAPI_CP_NORMAL; int ret; int run_initial_sync=0; int do_pdcch_flag=1; uint16_t cset_offset = 0; int loglvl=OAILOG_WARNING; float target_error_rate = 0.01; int css_flag=0; cpuf = get_cpu_freq_GHz(); if ( load_configmodule(argc,argv,CONFIG_ENABLECMDLINEONLY) == 0) { exit_fun("[NR_DLSIM] Error, configuration module init failed\n"); } randominit(0); while ((c = getopt (argc, argv, "f:hA:pf:g:i:j:n:s:S:t:x:y:z:M:N:F:GR:dP:IL:Eo:a:b:c:j:e:")) != -1) { switch (c) { /*case 'f': write_output_file=1; output_fd = fopen(optarg,"w"); if (output_fd==NULL) { printf("Error opening %s\n",optarg); exit(-1); } break;*/ /*case 'd': frame_type = 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 'n': n_trials = atoi(optarg); break; case 's': snr0 = atof(optarg); printf("Setting SNR0 to %f\n",snr0); break; case 'S': snr1 = atof(optarg); snr1set=1; printf("Setting SNR1 to %f\n",snr1); break; /* case 't': Td= atof(optarg); break; */ /*case 'p': extended_prefix_flag=1; 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); if ((transmission_mode!=1) && (transmission_mode!=2) && (transmission_mode!=6)) { printf("Unsupported transmission mode %d\n",transmission_mode); exit(-1); } 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 'M': SSB_positions = atoi(optarg); break; case 'N': Nid_cell = atoi(optarg); break; case 'R': N_RB_DL = atoi(optarg); break; case 'F': input_fd = fopen(optarg,"r"); if (input_fd==NULL) { printf("Problem with filename %s\n",optarg); exit(-1); } break; case 'P': pbch_phase = atoi(optarg); if (pbch_phase>3) printf("Illegal PBCH phase (0-3) got %d\n",pbch_phase); break; case 'I': run_initial_sync=1; target_error_rate=0.1; break; case 'L': loglvl = atoi(optarg); break; case 'E': css_flag=1; break; case 'o': cset_offset = atoi(optarg); break; case 'a': dlsch_config.rbStart = atoi(optarg); break; case 'b': dlsch_config.rbSize = atoi(optarg); break; case 'c': dlsch_config.StartSymbolIndex = atoi(optarg); break; case 'j': dlsch_config.NrOfSymbols = atoi(optarg); break; case 'e': dlsch_config.mcsIndex[0] = 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("-h This message\n"); //printf("-p Use extended prefix mode\n"); //printf("-d Use TDD\n"); printf("-n Number of frames to simulate\n"); printf("-s Starting SNR, runs from SNR0 to SNR0 + 5 dB. If n_frames is 1 then just SNR is simulated\n"); printf("-S Ending SNR, runs from SNR0 to SNR1\n"); printf("-t Delay spread for multipath channel\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("-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("-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("-M Multiple SSB positions in burst\n"); printf("-N Nid_cell\n"); printf("-R N_RB_DL\n"); printf("-O oversampling factor (1,2,4,8,16)\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 Output filename (.txt format) for Pe/SNR results\n"); printf("-F Input filename (.txt format) for RX conformance testing\n"); printf("-E used CSS scheduler\n"); printf("-o CORESET offset\n"); printf("-a Start PRB for PDSCH\n"); printf("-b Number of PRB for PDSCH\n"); printf("-c Start symbol for PDSCH (fixed for now)\n"); printf("-j Number of symbols for PDSCH (fixed for now)\n"); printf("-e MSC index\n"); exit (-1); break; } } logInit(); set_glog(loglvl); T_stdout = 1; if (snr1set==0) snr1 = snr0+10; RC.gNB = (PHY_VARS_gNB**) malloc(sizeof(PHY_VARS_gNB *)); RC.gNB[0] = (PHY_VARS_gNB*) malloc(sizeof(PHY_VARS_gNB )); memset(RC.gNB[0],0,sizeof(PHY_VARS_gNB)); gNB = RC.gNB[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_DL; RC.nb_nr_macrlc_inst = 1; mac_top_init_gNB(); gNB_mac = RC.nrmac[0]; gNB_RRC_INST rrc; memset((void*)&rrc,0,sizeof(rrc)); // read in SCGroupConfig FILE *scg_fd = fopen("reconfig.hex","r"); AssertFatal(scg_fd != NULL,"no reconfig.hex file\n"); char buffer[1024]; int msg_len=fread(buffer,1,1024,scg_fd); NR_RRCReconfiguration_t *NR_RRCReconfiguration; printf("Decoding NR_RRCReconfiguration (%d bytes)\n",msg_len); asn_dec_rval_t dec_rval = uper_decode_complete( NULL, &asn_DEF_NR_RRCReconfiguration, (void **)&NR_RRCReconfiguration, (uint8_t *)buffer, msg_len); if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) { AssertFatal(1==0,"NR_RRCReConfiguration decode error\n"); // free the memory SEQUENCE_free( &asn_DEF_NR_RRCReconfiguration, NR_RRCReconfiguration, 1 ); exit(-1); } fclose(scg_fd); AssertFatal(NR_RRCReconfiguration->criticalExtensions.present == NR_RRCReconfiguration__criticalExtensions_PR_rrcReconfiguration,"wrong NR_RRCReconfiguration->criticalExstions.present type\n"); NR_RRCReconfiguration_IEs_t *reconfig_ies = NR_RRCReconfiguration->criticalExtensions.choice.rrcReconfiguration; NR_CellGroupConfig_t *secondaryCellGroup; dec_rval = uper_decode_complete( NULL, &asn_DEF_NR_CellGroupConfig, (void **)&secondaryCellGroup, (uint8_t *)reconfig_ies->secondaryCellGroup->buf, reconfig_ies->secondaryCellGroup->size); if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) { AssertFatal(1==0,"NR_CellGroupConfig decode error\n"); // free the memory SEQUENCE_free( &asn_DEF_NR_CellGroupConfig, secondaryCellGroup, 1 ); exit(-1); } NR_ServingCellConfigCommon_t *scc = secondaryCellGroup->spCellConfig->reconfigurationWithSync->spCellConfigCommon; rrc.carrier.servingcellconfigcommon = secondaryCellGroup->spCellConfig->reconfigurationWithSync->spCellConfigCommon; printf("%p,%p\n", secondaryCellGroup->spCellConfig->reconfigurationWithSync->spCellConfigCommon, rrc.carrier.servingcellconfigcommon); 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,scc,0,0,NULL); // UE dedicated configuration rrc_mac_config_req_gNB(0,0,NULL,1,0x1234,secondaryCellGroup); phy_init_nr_gNB(gNB,0,0); // stub to configure frame_parms // nr_phy_config_request_sim(gNB,N_RB_DL,N_RB_DL,mu,Nid_cell,SSB_positions); // call MAC to configure common parameters double fs,bw; if (mu == 1 && N_RB_DL == 217) { fs = 122.88e6; bw = 80e6; } else if (mu == 1 && N_RB_DL == 245) { fs = 122.88e6; bw = 90e6; } else if (mu == 1 && N_RB_DL == 273) { fs = 122.88e6; bw = 100e6; } else if (mu == 1 && N_RB_DL == 106) { fs = 61.44e6; bw = 40e6; } else AssertFatal(1==0,"Unsupported numerology for mu %d, N_RB %d\n",mu, N_RB_DL); gNB2UE = new_channel_desc_scm(n_tx, n_rx, channel_model, fs, bw, 0, 0, 0); if (gNB2UE==NULL) { printf("Problem generating channel model. Exiting.\n"); exit(-1); } frame_length_complex_samples = frame_parms->samples_per_subframe*NR_NUMBER_OF_SUBFRAMES_PER_FRAME; frame_length_complex_samples_no_prefix = frame_parms->samples_per_subframe_wCP*NR_NUMBER_OF_SUBFRAMES_PER_FRAME; slot_length_complex_samples_no_prefix = frame_parms->samples_per_slot_wCP; s_re = malloc(2*sizeof(double*)); s_im = malloc(2*sizeof(double*)); r_re = malloc(2*sizeof(double*)); r_im = malloc(2*sizeof(double*)); txdata = malloc(2*sizeof(int*)); for (i=0; i<2; i++) { s_re[i] = malloc(frame_length_complex_samples*sizeof(double)); bzero(s_re[i],frame_length_complex_samples*sizeof(double)); s_im[i] = malloc(frame_length_complex_samples*sizeof(double)); bzero(s_im[i],frame_length_complex_samples*sizeof(double)); r_re[i] = malloc(frame_length_complex_samples*sizeof(double)); bzero(r_re[i],frame_length_complex_samples*sizeof(double)); r_im[i] = malloc(frame_length_complex_samples*sizeof(double)); bzero(r_im[i],frame_length_complex_samples*sizeof(double)); printf("Allocating %d samples for txdata\n",frame_length_complex_samples); txdata[i] = malloc(frame_length_complex_samples*sizeof(int)); bzero(txdata[i],frame_length_complex_samples*sizeof(int)); } if (pbch_file_fd!=NULL) { load_pbch_desc(pbch_file_fd); } //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)); if (run_initial_sync==1) UE->is_synchronized = 0; else {UE->is_synchronized = 1; UE->UE_mode[0]=PUSCH;} UE->perfect_ce = 0; for (i=0;i<10;i++) UE->current_thread_id[i] = 0; if (init_nr_ue_signal(UE, 1, 0) != 0) { printf("Error at UE NR initialisation\n"); exit(-1); } init_nr_ue_transport(UE,0); nr_gold_pbch(UE); nr_gold_pdcch(UE,0,2); nr_l2_init_ue(); UE_mac = get_mac_inst(0); UE->pdcch_vars[0][0]->crnti = 0x1234; 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 = dummy_nr_ue_ul_indication; UE_mac->if_module = nr_ue_if_module_init(0); unsigned int available_bits; unsigned char *estimated_output_bit; unsigned char *test_input_bit; unsigned int errors_bit = 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); // generate signal if (input_fd==NULL) { gNB->pbch_configured = 1; gNB->ssb_pdu.ssb_pdu_rel15.bchPayload=0x001234; if (css_flag == 0) nr_schedule_uss_dlsch_phytest(0,frame,slot,&dlsch_config); else nr_schedule_css_dlsch_phytest(0,frame,slot); Sched_INFO.module_id = 0; Sched_INFO.CC_id = 0; Sched_INFO.frame = frame; Sched_INFO.slot = slot; Sched_INFO.DL_req = &gNB_mac->DL_req[0]; Sched_INFO.UL_tti_req = &gNB_mac->UL_tti_req[0]; Sched_INFO.UL_dci_req = NULL; Sched_INFO.TX_req = &gNB_mac->TX_req[0]; nr_schedule_response(&Sched_INFO); phy_procedures_gNB_TX(gNB,frame,slot,0); //nr_common_signal_procedures (gNB,frame,subframe); int txdataF_offset = (slot%2) * frame_parms->samples_per_slot_wCP; LOG_M("txsigF0.m","txsF0", gNB->common_vars.txdataF[0],frame_length_complex_samples_no_prefix,1,1); if (gNB->frame_parms.nb_antennas_tx>1) LOG_M("txsigF1.m","txsF1", gNB->common_vars.txdataF[1],frame_length_complex_samples_no_prefix,1,1); int tx_offset = slot*frame_parms->samples_per_slot; printf("samples_per_slot_wCP = %d\n", frame_parms->samples_per_slot_wCP); //TODO: loop over slots for (aa=0; aa<gNB->frame_parms.nb_antennas_tx; aa++) { if (cyclic_prefix_type == 1) { PHY_ofdm_mod(&gNB->common_vars.txdataF[aa][txdataF_offset], &txdata[aa][tx_offset], frame_parms->ofdm_symbol_size, 12, frame_parms->nb_prefix_samples, CYCLIC_PREFIX); } else { nr_normal_prefix_mod(&gNB->common_vars.txdataF[aa][txdataF_offset], &txdata[aa][tx_offset], 14, frame_parms); } } } else { printf("Reading %d samples from file to antenna buffer %d\n",frame_length_complex_samples,0); if (fread(txdata[0], sizeof(int32_t), frame_length_complex_samples, input_fd) != frame_length_complex_samples) { printf("error reading from file\n"); //exit(-1); } } LOG_M("txsig0.m","txs0", txdata[0],frame_length_complex_samples,1,1); if (gNB->frame_parms.nb_antennas_tx>1) LOG_M("txsig1.m","txs1", txdata[1],frame_length_complex_samples,1,1); if (output_fd) fwrite(txdata[0],sizeof(int32_t),frame_length_complex_samples,output_fd); int txlev = signal_energy(&txdata[0][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); // printf("txlev %d (%f)\n",txlev,10*log10(txlev)); for (i=0; i<frame_length_complex_samples; i++) { for (aa=0; aa<frame_parms->nb_antennas_tx; aa++) { r_re[aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)]); r_im[aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)+1]); } } //Configure UE uint32_t pdcch_ConfigSIB1 = 0; uint32_t ssb_SubcarrierOffset = 0; 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,scc,NULL,NULL,NULL); // Initial bandwidth part configuration -- full carrier bandwidth UE_mac->initial_bwp_dl.bwp_id = 0; UE_mac->initial_bwp_dl.location = 0; UE_mac->initial_bwp_dl.scs = UE->frame_parms.subcarrier_spacing; UE_mac->initial_bwp_dl.N_RB = UE->frame_parms.N_RB_DL; UE_mac->initial_bwp_dl.cyclic_prefix = UE->frame_parms.Ncp; fapi_nr_dl_config_request_t *dl_config = &UE_mac->dl_config_request; // Type0 PDCCH search space dl_config->number_pdus = 1; dl_config->dl_config_list[0].pdu_type = FAPI_NR_DL_CONFIG_TYPE_DCI; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.rnti = 0x1234; uint64_t mask = 0x0; uint16_t num_rbs; uint16_t rb_offset; get_coreset_rballoc(gNB->pdcch_pdu->pdcch_pdu_rel15.FreqDomainResource,&num_rbs,&rb_offset); uint16_t cell_id=0; uint16_t num_symbols=2; for(i=0; i<(num_rbs/6); ++i){ // 38.331 Each bit corresponds a group of 6 RBs mask = mask >> 1; mask = mask | 0x100000000000; } uint16_t UE_rb_offset_count = rb_offset/6; mask = mask >> UE_rb_offset_count; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.frequency_domain_resource = mask; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.rb_offset = rb_offset; // additional parameter other than coreset dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.duration = num_symbols; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.cce_reg_mapping_type =CCE_REG_MAPPING_TYPE_NON_INTERLEAVED; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.cce_reg_interleaved_reg_bundle_size = 0; // L 38.211 7.3.2.2 dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.cce_reg_interleaved_interleaver_size = 0; // R 38.211 7.3.2.2 dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.cce_reg_interleaved_shift_index = cell_id; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.precoder_granularity = PRECODER_GRANULARITY_SAME_AS_REG_BUNDLE; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.coreset.pdcch_dmrs_scrambling_id = cell_id; uint32_t number_of_search_space_per_slot=1; uint32_t first_symbol_index=0; uint32_t search_space_duration=0; // element of search space uint32_t coreset_duration; // element of coreset coreset_duration = num_symbols * number_of_search_space_per_slot; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[0] = table_38213_10_1_1_c2[0]; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[1] = table_38213_10_1_1_c2[1]; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[2] = table_38213_10_1_1_c2[2]; // CCE aggregation level = 4 dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[3] = table_38213_10_1_1_c2[3]; // CCE aggregation level = 8 dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.number_of_candidates[4] = table_38213_10_1_1_c2[4]; // CCE aggregation level = 16 dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.duration = search_space_duration; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.monitoring_symbols_within_slot = (0x3fff << first_symbol_index) & (0x3fff >> (14-coreset_duration-first_symbol_index)) & 0x3fff; dl_config->dl_config_list[0].dci_config_pdu.dci_config_rel15.N_RB_BWP = N_RB_DL; UE_mac->scheduled_response.dl_config = dl_config; UE_mac->scheduled_response.ul_config = NULL; UE_mac->scheduled_response.tx_request = NULL; UE_mac->scheduled_response.module_id = 0; UE_mac->scheduled_response.CC_id = 0; UE_mac->scheduled_response.frame = frame; UE_mac->scheduled_response.slot = slot; nr_ue_phy_config_request(&UE_mac->phy_config); for (SNR = snr0; SNR < snr1; SNR += .2) { n_errors = 0; //n_errors2 = 0; //n_alamouti = 0; n_false_positive = 0; for (trial = 0; trial < n_trials; trial++) { errors_bit = 0; //multipath channel //multipath_channel(gNB2UE,s_re,s_im,r_re,r_im,frame_length_complex_samples,0); //AWGN sigma2_dB = 10 * log10((double)txlev) - SNR; sigma2 = pow(10, sigma2_dB/10); // printf("sigma2 %f (%f dB)\n",sigma2,sigma2_dB); for (i=0; i<frame_length_complex_samples; i++) { for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) { ((short*) UE->common_vars.rxdata[aa])[2*i] = (short) ((r_re[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0))); ((short*) UE->common_vars.rxdata[aa])[2*i+1] = (short) ((r_im[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0))); } } if (n_trials == 1) { LOG_M("rxsig0.m","rxs0", UE->common_vars.rxdata[0], frame_length_complex_samples, 1, 1); if (UE->frame_parms.nb_antennas_rx>1) LOG_M("rxsig1.m","rxs1", UE->common_vars.rxdata[1], frame_length_complex_samples, 1, 1); } if (UE->is_synchronized == 0) { UE_nr_rxtx_proc_t proc={0}; ret = nr_initial_sync(&proc, UE, normal_txrx,1); printf("nr_initial_sync1 returns %d\n",ret); if (ret<0) n_errors++; } else { UE->rx_offset=0; UE_proc.frame_rx = frame; UE_proc.nr_tti_rx= slot; UE_proc.subframe_rx = slot; nr_ue_scheduled_response(&UE_mac->scheduled_response); printf("Running phy procedures UE RX %d.%d\n",frame,slot); phy_procedures_nrUE_RX(UE, &UE_proc, 0, do_pdcch_flag, normal_txrx); if (n_trials==1) { LOG_M("rxsigF0.m","rxsF0", UE->common_vars.common_vars_rx_data_per_thread[0].rxdataF[0],slot_length_complex_samples_no_prefix,1,1); if (UE->frame_parms.nb_antennas_rx>1) LOG_M("rxsigF1.m","rxsF1", UE->common_vars.common_vars_rx_data_per_thread[0].rxdataF[1],slot_length_complex_samples_no_prefix,1,1); } if (UE->dlsch[UE->current_thread_id[slot]][0][0]->last_iteration_cnt >= UE->dlsch[UE->current_thread_id[slot]][0][0]->max_ldpc_iterations+1) n_errors++; //---------------------------------------------------------- //---------------------- count errors ---------------------- //---------------------------------------------------------- NR_gNB_DLSCH_t *gNB_dlsch = gNB->dlsch[0][0]; NR_UE_DLSCH_t *dlsch0 = UE->dlsch[UE->current_thread_id[UE_proc.nr_tti_rx]][0][0]; int harq_pid = dlsch0->current_harq_pid; NR_DL_UE_HARQ_t *UE_harq_process = dlsch0->harq_processes[harq_pid]; NR_UE_PDSCH **pdsch_vars = UE->pdsch_vars[UE->current_thread_id[UE_proc.nr_tti_rx]]; int16_t *UE_llr = pdsch_vars[0]->llr[0]; nfapi_nr_dl_tti_pdsch_pdu_rel15_t rel15 = gNB_dlsch->harq_processes[harq_pid]->pdsch_pdu.pdsch_pdu_rel15; uint32_t TBS = rel15.TBSize[0]; uint16_t length_dmrs = 1; uint16_t nb_rb = rel15.rbSize; uint8_t nb_re_dmrs = rel15.dmrsConfigType == 1 ? 6 : 4; uint8_t mod_order = rel15.qamModOrder[0]; uint8_t nb_symb_sch = rel15.NrOfSymbols; available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, mod_order, rel15.nrOfLayers); printf("\n"); printf("available_bits = %u\n", available_bits); for (i = 0; i < available_bits; i++) { if(((gNB_dlsch->harq_processes[harq_pid]->f[i] == 0) && (UE_llr[i] <= 0)) || ((gNB_dlsch->harq_processes[harq_pid]->f[i] == 1) && (UE_llr[i] >= 0))) { if(errors_scrambling == 0) { printf("\n"); printf("First bit in error in unscrambling = %d\n",i); } errors_scrambling++; } } for (i = 0; i < TBS; i++) { estimated_output_bit[i] = (UE_harq_process->b[i/8] & (1 << (i & 7))) >> (i & 7); test_input_bit[i] = (gNB_dlsch->harq_processes[harq_pid]->b[i / 8] & (1 << (i & 7))) >> (i & 7); // Further correct for multiple segments if (estimated_output_bit[i] != test_input_bit[i]) { if(errors_bit == 0) printf("First bit in error in decoding = %d\n",i); errors_bit++; } } //////////////////////////////////////////////////////////// if (errors_scrambling > 0) { if (n_trials == 1) printf("errors_scrambling = %d (trial %d)\n", errors_scrambling, trial); } if (errors_bit > 0) { n_false_positive++; if (n_trials == 1) printf("errors_bit = %u (trial %d)\n", errors_bit, trial); } printf("\n"); } // if (UE->is_synchronized == 0) } // noise trials printf("*****************************************\n"); printf("SNR %f, (false positive %f)\n", SNR, (float) n_errors / (float) n_trials); printf("*****************************************\n"); printf("\n"); printf("SNR %f : n_errors (negative CRC) = %d/%d\n", SNR, n_errors, n_trials); printf("\n"); if ((float)n_errors/(float)n_trials <= target_error_rate) { printf("PDSCH test OK\n"); break; } } // NSR for (i = 0; i < 2; i++) { free(s_re[i]); free(s_im[i]); free(r_re[i]); free(r_im[i]); free(txdata[i]); } free(s_re); free(s_im); free(r_re); free(r_im); free(txdata); free(test_input_bit); free(estimated_output_bit); if (output_fd) fclose(output_fd); if (input_fd) fclose(input_fd); return(n_errors); }