/* * 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/config/config_userapi.h" #include "common/utils/LOG/log.h" #include "common/ran_context.h" #include "PHY/types.h" #include "PHY/defs_nr_common.h" #include "PHY/defs_nr_UE.h" #include "PHY/defs_gNB.h" #include "PHY/INIT/phy_init.h" #include "PHY/NR_REFSIG/refsig_defs_ue.h" #include "PHY/NR_REFSIG/nr_mod_table.h" #include "PHY/MODULATION/modulation_eNB.h" #include "PHY/MODULATION/modulation_UE.h" #include "PHY/NR_TRANSPORT/nr_transport.h" #include "PHY/NR_TRANSPORT/nr_dlsch.h" #include "PHY/NR_TRANSPORT/nr_ulsch.h" #include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h" #include "SCHED_NR/sched_nr.h" #include "openair1/SIMULATION/TOOLS/sim.h" #include "openair1/SIMULATION/RF/rf.h" #include "openair1/SIMULATION/NR_PHY/nr_unitary_defs.h" #include "openair1/SIMULATION/NR_PHY/nr_dummy_functions.c" //#define DEBUG_NR_ULSCHSIM 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 nfapi_mode = 0; uint16_t NB_UE_INST = 1; // needed for some functions PHY_VARS_NR_UE *PHY_vars_UE_g[1][1] = { { NULL } }; uint16_t n_rnti = 0x1234; openair0_config_t openair0_cfg[MAX_CARDS]; int main(int argc, char **argv) { char c; int i,sf; double SNR, snr0 = -2.0, snr1 = 2.0, SNR_lin; double snr_step = 0.1; uint8_t snr1set = 0; FILE *output_fd = NULL; //uint8_t write_output_file = 0; int trial, n_trials = 1, n_errors = 0, n_false_positive = 0; uint8_t n_tx = 1, n_rx = 1, nb_codewords = 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; //unsigned char pbch_phase = 0; int frame = 0, subframe = 0; NR_DL_FRAME_PARMS *frame_parms; double sigma; unsigned char qbits = 8; int ret; int loglvl = OAILOG_WARNING; uint64_t SSB_positions=0x01; uint16_t nb_symb_sch = 12; uint16_t nb_rb = 50; uint8_t Imcs = 9; cpuf = get_cpu_freq_GHz(); if (load_configmodule(argc, argv, CONFIG_ENABLECMDLINEONLY) == 0) { exit_fun("[NR_ULSCHSIM] Error, configuration module init failed\n"); } //logInit(); randominit(0); //while ((c = getopt(argc, argv, "df:hpg:i:j:n:l:m:r:s:S:y:z:M:N:F:R:P:")) != -1) { while ((c = getopt(argc, argv, "hg:n:s:S:py:z:M:N:R:F:m:l:r:")) != -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! Exiting.\n"); exit(-1); } break; /*case 'i': interf1 = atoi(optarg); break; case 'j': interf2 = atoi(optarg); break;*/ case 'n': n_trials = atoi(optarg); #ifdef DEBUG_NR_ULSCHSIM printf("n_trials (-n) = %d\n", n_trials); #endif break; case 's': snr0 = atof(optarg); #ifdef DEBUG_NR_ULSCHSIM printf("Setting SNR0 to %f\n", snr0); #endif break; case 'S': snr1 = atof(optarg); snr1set = 1; #ifdef DEBUG_NR_ULSCHSIM printf("Setting SNR1 to %f\n", snr1); #endif 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 'y': n_tx = atoi(optarg); if ((n_tx == 0) || (n_tx > 2)) { printf("Unsupported number of TX antennas %d. Exiting.\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. Exiting.\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); #ifdef DEBUG_NR_ULSCHSIM printf("N_RB_DL (-R) = %d\n", N_RB_DL); #endif break; case 'F': input_fd = fopen(optarg, "r"); if (input_fd == NULL) { printf("Problem with filename %s. Exiting.\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 'm': Imcs = atoi(optarg); #ifdef DEBUG_NR_ULSCHSIM printf("Imcs (-m) = %d\n", Imcs); #endif break; case 'l': nb_symb_sch = atoi(optarg); break; case 'r': nb_rb = atoi(optarg); break; /*case 'x': transmission_mode = atoi(optarg); break;*/ default: case 'h': printf("%s -h(elp) -g channel_model -n n_frames -s snr0 -S snr1 -p(extended_prefix) -y TXant -z RXant -M -N cell_id -R -F input_filename -m -l -r\n", argv[0]); //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("-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("-n Number of frames to simulate\n"); //printf("-d Use TDD\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("-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("-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("-F Input filename (.txt format) for RX conformance testing\n"); printf("-m\n"); printf("-l\n"); printf("-r\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"); exit(-1); break; } } logInit(); set_glog(loglvl); T_stdout = 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] = (PHY_VARS_gNB **) malloc(sizeof(PHY_VARS_gNB *)); RC.gNB[0][0] = malloc(sizeof(PHY_VARS_gNB)); gNB = RC.gNB[0][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; crcTableInit(); nr_phy_config_request_sim(gNB, N_RB_DL, N_RB_DL, mu, Nid_cell, SSB_positions); phy_init_nr_gNB(gNB, 0, 0); //configure UE UE = malloc(sizeof(PHY_VARS_NR_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); } for (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); } } } unsigned char harq_pid = 0; uint8_t is_crnti = 0; unsigned int TBS = 8424; unsigned int available_bits; uint8_t nb_re_dmrs = 6; uint8_t length_dmrs = 1; uint8_t N_PRB_oh; uint16_t N_RE_prime,code_rate; unsigned char mod_order; uint8_t Nl = 1; uint8_t rvidx = 0; uint8_t UE_id = 0; NR_gNB_ULSCH_t *ulsch_gNB = gNB->ulsch[UE_id][0]; nfapi_nr_ul_config_ulsch_pdu_rel15_t *rel15_ul = &ulsch_gNB->harq_processes[harq_pid]->ulsch_pdu.ulsch_pdu_rel15; NR_UE_ULSCH_t *ulsch_ue = UE->ulsch[0][0][0]; mod_order = nr_get_Qm_ul(Imcs, 0); code_rate = nr_get_code_rate_ul(Imcs, 0); available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, mod_order, 1); TBS = nr_compute_tbs(mod_order,code_rate, nb_rb, nb_symb_sch, nb_re_dmrs*length_dmrs, 0, Nl); printf("\nAvailable bits %u TBS %u mod_order %d\n", available_bits, TBS, mod_order); /////////// setting rel15_ul parameters /////////// rel15_ul->number_rbs = nb_rb; rel15_ul->number_symbols = nb_symb_sch; rel15_ul->Qm = mod_order; rel15_ul->mcs = Imcs; rel15_ul->rv = rvidx; rel15_ul->n_layers = Nl; rel15_ul->nb_re_dmrs = nb_re_dmrs; rel15_ul->length_dmrs = length_dmrs; rel15_ul->R = code_rate; /////////////////////////////////////////////////// double *modulated_input = malloc16(sizeof(double) * 16 * 68 * 384); // [hna] 16 segments, 68*Zc short *channel_output_fixed = malloc16(sizeof(short) * 16 * 68 * 384); short *channel_output_uncoded = malloc16(sizeof(unsigned short) * 16 * 68 * 384); unsigned int errors_bit_uncoded = 0; unsigned char *estimated_output_bit; unsigned char *test_input_bit; unsigned int errors_bit = 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); unsigned char *test_input; test_input = (unsigned char *) malloc16(sizeof(unsigned char) * TBS / 8); for (i = 0; i < TBS / 8; i++) test_input[i] = (unsigned char) rand(); /////////////////////////[adk] preparing NR_UE_ULSCH_t parameters///////////////////////// A HOT FIX until creating nfapi_nr_ul_config_ulsch_pdu_rel15_t /////////// ulsch_ue->nb_re_dmrs = nb_re_dmrs; ulsch_ue->length_dmrs = length_dmrs; ulsch_ue->rnti = n_rnti; /////////// //////////////////////////////////////////////////////////////////////////////////////////// /////////////////////////[adk] preparing UL harq_process parameters///////////////////////// /////////// NR_UL_UE_HARQ_t *harq_process_ul_ue = ulsch_ue->harq_processes[harq_pid]; N_PRB_oh = 0; // higher layer (RRC) parameter xOverhead in PUSCH-ServingCellConfig N_RE_prime = NR_NB_SC_PER_RB*nb_symb_sch - nb_re_dmrs - N_PRB_oh; if (harq_process_ul_ue) { harq_process_ul_ue->mcs = Imcs; harq_process_ul_ue->Nl = Nl; harq_process_ul_ue->nb_rb = nb_rb; harq_process_ul_ue->number_of_symbols = nb_symb_sch; harq_process_ul_ue->num_of_mod_symbols = N_RE_prime*nb_rb*nb_codewords; harq_process_ul_ue->rvidx = rvidx; harq_process_ul_ue->TBS = TBS; harq_process_ul_ue->a = &test_input[0]; } /////////// //////////////////////////////////////////////////////////////////////////////////////////// #ifdef DEBUG_NR_ULSCHSIM for (i = 0; i < TBS / 8; i++) printf("test_input[i]=%hhu \n",test_input[i]); #endif /////////////////////////ULSCH coding///////////////////////// /////////// if (input_fd == NULL) { nr_ulsch_encoding(ulsch_ue, frame_parms, harq_pid); } printf("\n"); /////////// //////////////////////////////////////////////////////////////////// for (SNR = snr0; SNR < snr1; SNR += snr_step) { n_errors = 0; n_false_positive = 0; for (trial = 0; trial < n_trials; trial++) { errors_bit_uncoded = 0; for (i = 0; i < available_bits; i++) { #ifdef DEBUG_CODER if ((i&0xf)==0) printf("\ne %d..%d: ",i,i+15); #endif /* if (i<16){ printf("ulsch_encoder output f[%d] = %d\n",i,ulsch_ue->harq_processes[0]->f[i]); } */ if (ulsch_ue->g[i] == 0) modulated_input[i] = 1.0; ///sqrt(2); //QPSK else modulated_input[i] = -1.0; ///sqrt(2); //if (i<16) printf("modulated_input[%d] = %d\n",i,modulated_input[i]); #if 1 SNR_lin = pow(10, SNR / 10.0); sigma = 1.0 / sqrt(2 * SNR_lin); channel_output_fixed[i] = (short) quantize(sigma / 4.0 / 4.0, modulated_input[i] + sigma * gaussdouble(0.0, 1.0), qbits); #else channel_output_fixed[i] = (short) quantize(0.01, modulated_input[i], qbits); #endif //printf("channel_output_fixed[%d]: %d\n",i,channel_output_fixed[i]); //Uncoded BER if (channel_output_fixed[i] < 0) channel_output_uncoded[i] = 1; //QPSK demod else channel_output_uncoded[i] = 0; if (channel_output_uncoded[i] != ulsch_ue->harq_processes[harq_pid]->f[i]) errors_bit_uncoded = errors_bit_uncoded + 1; } printf("errors bits uncoded %u\n", errors_bit_uncoded); printf("\n"); #ifdef DEBUG_CODER printf("\n"); exit(-1); #endif ret = nr_ulsch_decoding(gNB, UE_id, channel_output_fixed, frame_parms, frame, nb_symb_sch, subframe, harq_pid, is_crnti); if (ret > ulsch_gNB->max_ldpc_iterations) n_errors++; //count errors errors_bit = 0; 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] = (test_input[i / 8] & (1 << (i & 7))) >> (i & 7); // Further correct for multiple segments if (estimated_output_bit[i] != test_input_bit[i]) { errors_bit++; } } if (errors_bit > 0) { n_false_positive++; if (n_trials == 1) printf("errors_bit %u (trial %d)\n", errors_bit, trial); } printf("\n"); } printf("*****************************************\n"); printf("SNR %f, BLER %f (false positive %f)\n", SNR, (float) n_errors / (float) n_trials, (float) n_false_positive / (float) n_trials); printf("*****************************************\n"); printf("\n"); if (errors_bit == 0) { printf("PUSCH test OK\n"); printf("\n"); break; } printf("\n"); } if (output_fd) fclose(output_fd); if (input_fd) fclose(input_fd); return (n_errors); }