846 lines
27 KiB
C
846 lines
27 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <string.h>
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#include <math.h>
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#include <unistd.h>
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#include <pthread.h>
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#include "common/config/config_userapi.h"
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#include "common/utils/LOG/log.h"
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#include "common/ran_context.h"
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#include "SIMULATION/TOOLS/sim.h"
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#include "SIMULATION/RF/rf.h"
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#include "PHY/types.h"
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#include "PHY/defs_gNB.h"
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#include "PHY/defs_nr_UE.h"
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#include "SCHED_NR/sched_nr.h"
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#include "SCHED_NR_UE/phy_frame_config_nr.h"
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#include "PHY/phy_vars_nr_ue.h"
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#include "PHY/NR_REFSIG/refsig_defs_ue.h"
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#include "PHY/MODULATION/modulation_eNB.h"
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#include "PHY/MODULATION/modulation_UE.h"
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#include "PHY/INIT/phy_init.h"
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#include "PHY/NR_TRANSPORT/nr_transport_proto.h"
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#include "PHY/NR_TRANSPORT/nr_transport_common_proto.h"
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#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
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#include "nr_unitary_defs.h"
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#include "OCG_vars.h"
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#include <openair2/LAYER2/MAC/mac_vars.h>
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#include <openair2/RRC/LTE/rrc_vars.h>
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//#include "openair1/SIMULATION/NR_PHY/nr_dummy_functions.c"
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#define NR_PRACH_DEBUG 1
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#define PRACH_WRITE_OUTPUT_DEBUG 1
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LCHAN_DESC DCCH_LCHAN_DESC,DTCH_DL_LCHAN_DESC,DTCH_UL_LCHAN_DESC;
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rlc_info_t Rlc_info_um,Rlc_info_am_config;
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PHY_VARS_gNB *gNB;
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PHY_VARS_NR_UE *UE;
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RAN_CONTEXT_t RC;
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RU_t *ru;
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double cpuf;
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extern uint16_t prach_root_sequence_map0_3[838];
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openair0_config_t openair0_cfg[MAX_CARDS];
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//uint8_t nfapi_mode=0;
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int sl_ahead = 0;
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//void dump_nr_prach_config(NR_DL_FRAME_PARMS *frame_parms,uint8_t subframe);
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/* temporary dummy implem of get_softmodem_optmask, till basic simulators implemented as device */
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uint64_t get_softmodem_optmask(void) {return 0;}
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softmodem_params_t *get_softmodem_params(void) {return 0;}
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int oai_nfapi_dl_tti_req(nfapi_nr_dl_tti_request_t *dl_config_req) { return(0); }
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int oai_nfapi_tx_data_req(nfapi_nr_tx_data_request_t *tx_data_req){ return(0); }
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int oai_nfapi_ul_dci_req(nfapi_nr_ul_dci_request_t *ul_dci_req){ return(0); }
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int oai_nfapi_ul_tti_req(nfapi_nr_ul_tti_request_t *ul_tti_req){ return(0); }
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void
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rrc_data_ind(
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const protocol_ctxt_t *const ctxt_pP,
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const rb_id_t Srb_id,
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const sdu_size_t sdu_sizeP,
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const uint8_t *const buffer_pP
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)
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{
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}
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int
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gtpv1u_create_s1u_tunnel(
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const instance_t instanceP,
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const gtpv1u_enb_create_tunnel_req_t *const create_tunnel_req_pP,
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gtpv1u_enb_create_tunnel_resp_t *const create_tunnel_resp_pP
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) {
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return 0;
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}
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int
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rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP(
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const protocol_ctxt_t *const ctxt_pP,
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const gtpv1u_enb_create_tunnel_resp_t *const create_tunnel_resp_pP,
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uint8_t *inde_list
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) {
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return 0;
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}
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int
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gtpv1u_create_ngu_tunnel(
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const instance_t instanceP,
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const gtpv1u_gnb_create_tunnel_req_t * const create_tunnel_req_pP,
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gtpv1u_gnb_create_tunnel_resp_t * const create_tunnel_resp_pP){
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return 0;
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}
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int
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gtpv1u_update_ngu_tunnel(
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const instance_t instanceP,
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const gtpv1u_gnb_create_tunnel_req_t *const create_tunnel_req_pP,
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const rnti_t prior_rnti
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){
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return 0;
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}
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int
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nr_rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP(
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const protocol_ctxt_t *const ctxt_pP,
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const gtpv1u_gnb_create_tunnel_resp_t *const create_tunnel_resp_pP,
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uint8_t *inde_list
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){
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return 0;
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}
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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;}
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// Dummy function to avoid linking error at compilation of nr-prachsim
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int is_x2ap_enabled(void)
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{
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return 0;
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}
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int8_t nr_rrc_ue_decode_NR_SIB1_Message(module_id_t module_id, uint8_t gNB_index, uint8_t *const bufferP, const uint8_t buffer_len) {
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return 0;
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}
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int nr_derive_key(int alg_type, uint8_t alg_id,
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const uint8_t key[32], uint8_t **out)
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{
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return 0;
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}
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int main(int argc, char **argv){
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char c;
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double sigma2, sigma2_dB = 0, SNR, snr0 = -2.0, snr1 = 0.0, ue_speed0 = 0.0, ue_speed1 = 0.0;
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double **s_re, **s_im, **r_re, **r_im, iqim = 0.0, delay_avg = 0, ue_speed = 0, fs, bw;
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int i, aa, aarx, **txdata, trial, n_frames = 1, prach_start, rx_prach_start; //, ntrials=1;
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int N_RB_UL = 106, delay = 0, NCS_config = 13, rootSequenceIndex = 1, threequarter_fs = 0, mu = 1, fd_occasion = 0, loglvl = OAILOG_INFO, numRA = 0, prachStartSymbol = 0;
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uint8_t snr1set = 0, ue_speed1set = 0, transmission_mode = 1, n_tx = 1, n_rx = 1, awgn_flag = 0, msg1_frequencystart = 0, num_prach_fd_occasions = 1, prach_format=0;
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uint8_t frame = 1, slot=19, slot_gNB=19, config_index = 98, prach_sequence_length = 1, restrictedSetConfig = 0, N_dur, N_t_slot, start_symbol;
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uint16_t Nid_cell = 0, preamble_tx = 0, preamble_delay, format, format0, format1;
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uint32_t tx_lev = 10000, prach_errors = 0; //,tx_lev_dB;
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uint64_t SSB_positions = 0x01;
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uint16_t RA_sfn_index;
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uint8_t N_RA_slot;
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uint8_t config_period;
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int prachOccasion = 0;
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double DS_TDL = .03;
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NB_UE_INST=1;
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// int8_t interf1=-19,interf2=-19;
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// uint8_t abstraction_flag=0,calibration_flag=0;
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// double prach_sinr;
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// uint32_t nsymb;
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// uint16_t preamble_max, preamble_energy_max;
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FILE *input_fd=NULL;
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char* input_file=NULL;
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int n_bytes=0;
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NR_DL_FRAME_PARMS *frame_parms;
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NR_PRACH_RESOURCES_t prach_resources;
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nfapi_nr_prach_config_t *prach_config;
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nfapi_nr_prach_pdu_t *prach_pdu;
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fapi_nr_prach_config_t *ue_prach_config;
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fapi_nr_ul_config_prach_pdu *ue_prach_pdu;
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channel_desc_t *UE2gNB;
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SCM_t channel_model = Rayleigh1;
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cpuf = get_cpu_freq_GHz();
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if ( load_configmodule(argc,argv,CONFIG_ENABLECMDLINEONLY) == 0) {
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exit_fun("[SOFTMODEM] Error, configuration module init failed\n");
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}
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randominit(0);
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while ((c = getopt (argc, argv, "hHaA:Cc:r:p:g:m:n:s:S:t:x:y:v:V:z:N:F:d:Z:L:R:E")) != -1) {
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switch (c) {
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case 'a':
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printf("Running AWGN simulation\n");
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awgn_flag = 1;
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/* ntrials not used later, no need to set */
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//ntrials=1;
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break;
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case 'c':
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config_index = atoi(optarg);
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break;
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case 'r':
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msg1_frequencystart = atoi(optarg);
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break;
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case 'd':
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delay = atoi(optarg);
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break;
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case 'g':
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switch((char)*optarg) {
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case 'A':
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channel_model=SCM_A;
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break;
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case 'B':
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channel_model=SCM_B;
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break;
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case 'C':
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channel_model=SCM_C;
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break;
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case 'D':
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channel_model=SCM_D;
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break;
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case 'E':
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channel_model=EPA;
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break;
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case 'F':
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channel_model=EVA;
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break;
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case 'G':
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channel_model=ETU;
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break;
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case 'H':
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channel_model=Rayleigh8;
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break;
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case 'I':
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channel_model=Rayleigh1;
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break;
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case 'J':
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channel_model=Rayleigh1_corr;
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break;
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case 'K':
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channel_model=Rayleigh1_anticorr;
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break;
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case 'L':
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channel_model=Rice8;
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break;
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case 'M':
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channel_model=Rice1;
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break;
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case 'N':
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channel_model=Rayleigh1_800;
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break;
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default:
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printf("Unsupported channel model!\n");
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exit(-1);
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}
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break;
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case 'E':
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threequarter_fs=1;
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break;
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case 'm':
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mu = atoi(optarg);
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break;
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case 'n':
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n_frames = atoi(optarg);
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break;
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case 's':
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snr0 = atof(optarg);
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printf("Setting SNR0 to %f\n",snr0);
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break;
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case 'S':
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snr1 = atof(optarg);
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snr1set=1;
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printf("Setting SNR1 to %f\n",snr1);
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break;
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case 'p':
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preamble_tx=atoi(optarg);
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break;
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case 'v':
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ue_speed0 = atoi(optarg);
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break;
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case 'V':
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ue_speed1 = atoi(optarg);
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ue_speed1set = 1;
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break;
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case 'Z':
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NCS_config = atoi(optarg);
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if ((NCS_config > 15) || (NCS_config < 0))
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printf("Illegal NCS_config %d, (should be 0-15)\n",NCS_config);
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break;
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case 'H':
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printf("High-Speed Flag enabled\n");
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restrictedSetConfig = 1;
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break;
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case 'L':
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rootSequenceIndex = atoi(optarg);
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if ((rootSequenceIndex < 0) || (rootSequenceIndex > 837))
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printf("Illegal rootSequenceNumber %d, (should be 0-837)\n",rootSequenceIndex);
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break;
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case 'x':
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transmission_mode=atoi(optarg);
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if ((transmission_mode!=1) &&
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(transmission_mode!=2) &&
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(transmission_mode!=6)) {
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printf("Unsupported transmission mode %d\n",transmission_mode);
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exit(-1);
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}
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break;
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case 'y':
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n_tx=atoi(optarg);
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if ((n_tx==0) || (n_tx>2)) {
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printf("Unsupported number of tx antennas %d\n",n_tx);
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exit(-1);
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}
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break;
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case 'z':
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n_rx=atoi(optarg);
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if ((n_rx==0) || (n_rx>2)) {
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printf("Unsupported number of rx antennas %d\n",n_rx);
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exit(-1);
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}
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break;
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case 'N':
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Nid_cell = atoi(optarg);
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break;
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case 'R':
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N_RB_UL = atoi(optarg);
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break;
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case 'F':
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input_fd = fopen(optarg,"r");
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input_file = optarg;
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if (input_fd==NULL) {
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printf("Problem with filename %s\n",optarg);
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exit(-1);
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}
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break;
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default:
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case 'h':
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printf("%s -h(elp) -a(wgn on) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -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",
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argv[0]);
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printf("-h This message\n");
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printf("-a Use AWGN channel and not multipath\n");
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printf("-n Number of frames to simulate\n");
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printf("-s Starting SNR, runs from SNR0 to SNR0 + 5 dB. If n_frames is 1 then just SNR is simulated\n");
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printf("-S Ending SNR, runs from SNR0 to SNR1\n");
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printf("-g [A,B,C,D,E,F,G,I,N] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) or Rayleigh1 (I) or Rayleigh1_800 (N) models (ignores delay spread and Ricean factor)\n");
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printf("-z Number of RX antennas used in gNB\n");
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printf("-N Nid_cell\n");
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printf("-O oversampling factor (1,2,4,8,16)\n");
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// printf("-f PRACH format (0=1,1=2,2=3,3=4)\n");
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printf("-d Channel delay \n");
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printf("-v Starting UE velocity in km/h, runs from 'v' to 'v+50km/h'. If n_frames is 1 just 'v' is simulated \n");
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printf("-V Ending UE velocity in km/h, runs from 'v' to 'V'");
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printf("-L rootSequenceIndex (0-837)\n");
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printf("-Z NCS_config (ZeroCorrelationZone) (0-15)\n");
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printf("-H Run with High-Speed Flag enabled \n");
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printf("-R Number of PRB (6,15,25,50,75,100)\n");
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printf("-F Input filename (.txt format) for RX conformance testing\n");
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exit (-1);
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break;
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}
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}
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// Configure log
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logInit();
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set_glog(loglvl);
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T_stdout = 1;
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SET_LOG_DEBUG(PRACH);
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// Configure gNB and RU
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RC.gNB = (PHY_VARS_gNB**) malloc(2*sizeof(PHY_VARS_gNB *));
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RC.gNB[0] = malloc(sizeof(PHY_VARS_gNB));
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memset(RC.gNB[0],0,sizeof(PHY_VARS_gNB));
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RC.ru = (RU_t**) malloc(2*sizeof(RU_t *));
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RC.ru[0] = (RU_t*) malloc(sizeof(RU_t ));
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memset(RC.ru[0],0,sizeof(RU_t));
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RC.nb_RU = 1;
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gNB = RC.gNB[0];
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ru = RC.ru[0];
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frame_parms = &gNB->frame_parms;
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prach_config = &gNB->gNB_config.prach_config;
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prach_pdu = &gNB->prach_vars.list[0].pdu;
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frame_parms = &gNB->frame_parms; //to be initialized I suppose (maybe not necessary for PBCH)
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s_re = malloc(2*sizeof(double*));
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s_im = malloc(2*sizeof(double*));
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r_re = malloc(2*sizeof(double*));
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r_im = malloc(2*sizeof(double*));
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frame_parms->nb_antennas_tx = n_tx;
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frame_parms->nb_antennas_rx = n_rx;
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frame_parms->N_RB_DL = N_RB_UL;
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frame_parms->N_RB_UL = N_RB_UL;
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frame_parms->threequarter_fs = threequarter_fs;
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frame_parms->frame_type = TDD;
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frame_parms->freq_range = (mu==1 ? nr_FR1 : nr_FR2);
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frame_parms->numerology_index = mu;
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nr_phy_config_request_sim(gNB, N_RB_UL, N_RB_UL, mu, Nid_cell, SSB_positions);
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uint64_t absoluteFrequencyPointA = (mu==1 ? 640000 : 2070833);
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uint8_t subframe = slot/frame_parms->slots_per_subframe;
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if (config_index<67 && mu==1) { prach_sequence_length=0; slot = subframe*2; slot_gNB = 1+(subframe*2); }
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uint16_t N_ZC = prach_sequence_length == 0 ? 839 : 139;
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printf("Config_index %d, prach_sequence_length %d\n",config_index,prach_sequence_length);
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printf("FFT Size %d, Extended Prefix %d, Samples per subframe %d, Frame type %s, Frequency Range %s\n",
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NUMBER_OF_OFDM_CARRIERS,
|
|
frame_parms->Ncp,
|
|
frame_parms->samples_per_subframe,
|
|
frame_parms->frame_type == FDD ? "FDD" : "TDD",
|
|
frame_parms->freq_range == nr_FR1 ? "FR1" : "FR2");
|
|
|
|
ru->nr_frame_parms = frame_parms;
|
|
ru->if_south = LOCAL_RF;
|
|
ru->nb_tx = n_tx;
|
|
ru->nb_rx = n_rx;
|
|
|
|
gNB->gNB_config.carrier_config.num_tx_ant.value = 1;
|
|
gNB->gNB_config.carrier_config.num_rx_ant.value = 1;
|
|
if (mu==1)
|
|
gNB->gNB_config.tdd_table.tdd_period.value = 6;
|
|
else if (mu==3)
|
|
gNB->gNB_config.tdd_table.tdd_period.value = 3;
|
|
else {
|
|
printf("unsupported numerology %d\n",mu);
|
|
exit(-1);
|
|
}
|
|
|
|
gNB->gNB_config.prach_config.num_prach_fd_occasions.value = num_prach_fd_occasions;
|
|
gNB->gNB_config.prach_config.num_prach_fd_occasions_list = (nfapi_nr_num_prach_fd_occasions_t *) malloc(num_prach_fd_occasions*sizeof(nfapi_nr_num_prach_fd_occasions_t));
|
|
|
|
gNB->proc.slot_rx = slot;
|
|
|
|
int ret = get_nr_prach_info_from_index(config_index,
|
|
(int)frame,
|
|
(int)slot_gNB,
|
|
absoluteFrequencyPointA,
|
|
mu,
|
|
frame_parms->frame_type,
|
|
&format,
|
|
&start_symbol,
|
|
&N_t_slot,
|
|
&N_dur,
|
|
&RA_sfn_index,
|
|
&N_RA_slot,
|
|
&config_period);
|
|
|
|
if (ret == 0) {printf("No prach in %d.%d, mu %d, config_index %d\n",frame,slot,mu,config_index); exit(-1);}
|
|
format0 = format&0xff; // first column of format from table
|
|
format1 = (format>>8)&0xff; // second column of format from table
|
|
|
|
if (format1 != 0xff) {
|
|
switch(format0) {
|
|
case 0xa1:
|
|
prach_format = 11;
|
|
break;
|
|
case 0xa2:
|
|
prach_format = 12;
|
|
break;
|
|
case 0xa3:
|
|
prach_format = 13;
|
|
break;
|
|
default:
|
|
AssertFatal(1==0, "Only formats A1/B1 A2/B2 A3/B3 are valid for dual format");
|
|
}
|
|
} else {
|
|
switch(format0) { // single PRACH format
|
|
case 0:
|
|
prach_format = 0;
|
|
break;
|
|
case 1:
|
|
prach_format = 1;
|
|
break;
|
|
case 2:
|
|
prach_format = 2;
|
|
break;
|
|
case 3:
|
|
prach_format = 3;
|
|
break;
|
|
case 0xa1:
|
|
prach_format = 4;
|
|
break;
|
|
case 0xa2:
|
|
prach_format = 5;
|
|
break;
|
|
case 0xa3:
|
|
prach_format = 6;
|
|
break;
|
|
case 0xb1:
|
|
prach_format = 7;
|
|
break;
|
|
case 0xb4:
|
|
prach_format = 8;
|
|
break;
|
|
case 0xc0:
|
|
prach_format = 9;
|
|
break;
|
|
case 0xc2:
|
|
prach_format = 10;
|
|
break;
|
|
default:
|
|
AssertFatal(1 == 0, "Invalid PRACH format");
|
|
}
|
|
}
|
|
|
|
printf("PRACH format %d\n",prach_format);
|
|
|
|
prach_config->num_prach_fd_occasions_list[fd_occasion].prach_root_sequence_index.value = rootSequenceIndex;
|
|
prach_config->num_prach_fd_occasions_list[fd_occasion].k1.value = msg1_frequencystart;
|
|
prach_config->restricted_set_config.value = restrictedSetConfig;
|
|
prach_config->prach_sequence_length.value = prach_sequence_length;
|
|
prach_pdu->num_cs = get_NCS(NCS_config, format0, restrictedSetConfig);
|
|
prach_config->num_prach_fd_occasions_list[fd_occasion].num_root_sequences.value = 1+(64/(N_ZC/prach_pdu->num_cs));
|
|
prach_pdu->prach_format = prach_format;
|
|
|
|
memcpy((void*)&ru->config,(void*)&RC.gNB[0]->gNB_config,sizeof(ru->config));
|
|
RC.nb_nr_L1_inst=1;
|
|
phy_init_nr_gNB(gNB,0,0);
|
|
nr_phy_init_RU(ru);
|
|
gNB->common_vars.rxdata = ru->common.rxdata;
|
|
set_tdd_config_nr(&gNB->gNB_config, mu, 7, 6, 2, 4);
|
|
|
|
// Configure UE
|
|
UE = malloc(sizeof(PHY_VARS_NR_UE));
|
|
memset((void*)UE,0,sizeof(PHY_VARS_NR_UE));
|
|
PHY_vars_UE_g = malloc(2*sizeof(PHY_VARS_NR_UE**));
|
|
PHY_vars_UE_g[0] = malloc(2*sizeof(PHY_VARS_NR_UE*));
|
|
PHY_vars_UE_g[0][0] = UE;
|
|
memcpy(&UE->frame_parms,frame_parms,sizeof(NR_DL_FRAME_PARMS));
|
|
UE->nrUE_config.prach_config.num_prach_fd_occasions_list = (fapi_nr_num_prach_fd_occasions_t *) malloc(num_prach_fd_occasions*sizeof(fapi_nr_num_prach_fd_occasions_t));
|
|
|
|
if (init_nr_ue_signal(UE, 1, 0) != 0){
|
|
printf("Error at UE NR initialisation\n");
|
|
exit(-1);
|
|
}
|
|
|
|
ue_prach_pdu = &UE->prach_vars[0]->prach_pdu;
|
|
ue_prach_config = &UE->nrUE_config.prach_config;
|
|
UE->prach_resources[0] = &prach_resources;
|
|
txdata = UE->common_vars.txdata;
|
|
|
|
UE->prach_vars[0]->amp = AMP;
|
|
ue_prach_pdu->root_seq_id = rootSequenceIndex;
|
|
ue_prach_pdu->num_cs = get_NCS(NCS_config, format0, restrictedSetConfig);
|
|
ue_prach_pdu->restricted_set = restrictedSetConfig;
|
|
ue_prach_pdu->freq_msg1 = msg1_frequencystart;
|
|
ue_prach_pdu->prach_format = prach_format;
|
|
|
|
ue_prach_config->prach_sub_c_spacing = mu;
|
|
ue_prach_config->prach_sequence_length = prach_sequence_length;
|
|
ue_prach_config->restricted_set_config = restrictedSetConfig;
|
|
ue_prach_config->num_prach_fd_occasions_list[fd_occasion].num_root_sequences = prach_config->num_prach_fd_occasions_list[fd_occasion].num_root_sequences.value ;
|
|
ue_prach_config->num_prach_fd_occasions_list[fd_occasion].prach_root_sequence_index = rootSequenceIndex;
|
|
ue_prach_config->num_prach_fd_occasions_list[fd_occasion].k1 = msg1_frequencystart;
|
|
|
|
if (preamble_tx == 99)
|
|
preamble_tx = (uint16_t)(taus()&0x3f);
|
|
|
|
if (n_frames == 1)
|
|
printf("raPreamble %d\n",preamble_tx);
|
|
|
|
UE->prach_resources[0]->ra_PreambleIndex = preamble_tx;
|
|
UE->prach_resources[0]->init_msg1 = 1;
|
|
|
|
// Configure channel
|
|
bw = N_RB_UL*(180e3)*(1 << frame_parms->numerology_index);
|
|
AssertFatal(bw<=122.88e6,"Illegal channel bandwidth %f (mu %d,N_RB_UL %d)\n", bw, frame_parms->numerology_index, N_RB_UL);
|
|
|
|
if (bw <= 30.72e6)
|
|
fs = 30.72e6;
|
|
else if (bw <= 61.44e6)
|
|
fs = 61.44e6;
|
|
else if (bw <= 122.88e6)
|
|
fs = 122.88e6;
|
|
|
|
LOG_I(PHY,"Running with bandwidth %f Hz, fs %f samp/s, FRAME_LENGTH_COMPLEX_SAMPLES %d\n",bw,fs,FRAME_LENGTH_COMPLEX_SAMPLES);
|
|
|
|
UE2gNB = new_channel_desc_scm(UE->frame_parms.nb_antennas_tx,
|
|
gNB->frame_parms.nb_antennas_rx,
|
|
channel_model,
|
|
fs,
|
|
bw,
|
|
DS_TDL,
|
|
0.0,
|
|
delay,
|
|
0);
|
|
|
|
if (UE2gNB==NULL) {
|
|
printf("Problem generating channel model. Exiting.\n");
|
|
exit(-1);
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
// compute PRACH sequence
|
|
compute_nr_prach_seq(prach_config->prach_sequence_length.value,
|
|
prach_config->num_prach_fd_occasions_list[fd_occasion].num_root_sequences.value,
|
|
prach_config->num_prach_fd_occasions_list[fd_occasion].prach_root_sequence_index.value,
|
|
gNB->X_u);
|
|
|
|
compute_nr_prach_seq(ue_prach_config->prach_sequence_length,
|
|
ue_prach_config->num_prach_fd_occasions_list[fd_occasion].num_root_sequences,
|
|
ue_prach_config->num_prach_fd_occasions_list[fd_occasion].prach_root_sequence_index,
|
|
UE->X_u);
|
|
|
|
/*tx_lev = generate_nr_prach(UE,
|
|
0, //gNB_id,
|
|
subframe); */ //commented for testing purpose
|
|
|
|
UE_nr_rxtx_proc_t proc={0};
|
|
proc.frame_tx = frame;
|
|
proc.nr_slot_tx = slot;
|
|
nr_ue_prach_procedures(UE, &proc, 0);
|
|
|
|
/* tx_lev_dB not used later, no need to set */
|
|
//tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
|
|
|
|
prach_start = subframe*frame_parms->samples_per_subframe;
|
|
|
|
#ifdef NR_PRACH_DEBUG
|
|
LOG_M("txsig0.m", "txs0", &txdata[0][subframe*frame_parms->samples_per_subframe], frame_parms->samples_per_subframe, 1, 1);
|
|
LOG_M("txsig0_frame.m","txs0", txdata[0],frame_parms->samples_per_frame,1,1);
|
|
#endif
|
|
|
|
// multipath channel
|
|
// dump_nr_prach_config(&gNB->frame_parms,subframe);
|
|
|
|
for (i = 0; i < frame_parms->samples_per_subframe<<1; i++) {
|
|
for (aa=0; aa<1; aa++) {
|
|
if (awgn_flag == 0) {
|
|
s_re[aa][i] = ((double)(((short *)&txdata[aa][prach_start]))[(i<<1)]);
|
|
s_im[aa][i] = ((double)(((short *)&txdata[aa][prach_start]))[(i<<1)+1]);
|
|
} else {
|
|
for (aarx=0; aarx<gNB->frame_parms.nb_antennas_rx; aarx++) {
|
|
if (aa==0) {
|
|
r_re[aarx][i] = ((double)(((short *)&txdata[aa][prach_start]))[(i<<1)]);
|
|
r_im[aarx][i] = ((double)(((short *)&txdata[aa][prach_start]))[(i<<1)+1]);
|
|
} else {
|
|
r_re[aarx][i] += ((double)(((short *)&txdata[aa][prach_start]))[(i<<1)]);
|
|
r_im[aarx][i] += ((double)(((short *)&txdata[aa][prach_start]))[(i<<1)+1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (snr1set == 0) {
|
|
if (n_frames == 1)
|
|
snr1 = snr0 + .1;
|
|
else
|
|
snr1 = snr0 + 5.0;
|
|
}
|
|
|
|
printf("SNR0 %f, SNR1 %f\n", snr0, snr1);
|
|
|
|
if (ue_speed1set == 0) {
|
|
if (n_frames == 1)
|
|
ue_speed1 = ue_speed0 + 10;
|
|
else
|
|
ue_speed1 = ue_speed0 + 50;
|
|
}
|
|
|
|
rx_prach_start = subframe*frame_parms->samples_per_subframe;
|
|
if (n_frames==1) printf("slot %d, rx_prach_start %d\n",slot,rx_prach_start);
|
|
uint16_t preamble_rx, preamble_energy;
|
|
|
|
|
|
for (SNR=snr0; SNR<snr1; SNR+=.1) {
|
|
for (ue_speed=ue_speed0; ue_speed<ue_speed1; ue_speed+=10) {
|
|
delay_avg = 0.0;
|
|
// max Doppler shift
|
|
UE2gNB->max_Doppler = 1.9076e9*(ue_speed/3.6)/3e8;
|
|
printf("n_frames %d SNR %f\n",n_frames,SNR);
|
|
prach_errors=0;
|
|
|
|
for (trial=0; trial<n_frames; trial++) {
|
|
|
|
if (input_fd==NULL) {
|
|
sigma2_dB = 10*log10((double)tx_lev) - SNR - 10*log10(N_RB_UL*12/N_ZC);
|
|
|
|
if (n_frames==1)
|
|
printf("sigma2_dB %f (SNR %f dB) tx_lev_dB %f\n",sigma2_dB,SNR,10*log10((double)tx_lev));
|
|
|
|
//AWGN
|
|
sigma2 = pow(10,sigma2_dB/10);
|
|
// printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
|
|
|
|
if (awgn_flag == 0) {
|
|
multipath_tv_channel(UE2gNB, s_re, s_im, r_re, r_im, frame_parms->samples_per_frame, 0);
|
|
}
|
|
|
|
if (n_frames==1) {
|
|
printf("rx_level data symbol %f, tx_lev %f\n",
|
|
10*log10(signal_energy_fp(r_re,r_im,1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0)),
|
|
10*log10(tx_lev));
|
|
}
|
|
|
|
for (i = 0; i< frame_parms->samples_per_subframe; i++) {
|
|
for (aa = 0; aa < frame_parms->nb_antennas_rx; aa++) {
|
|
((short*) &ru->common.rxdata[aa][rx_prach_start])[2*i] = (short) (.167*(r_re[aa][i] +sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
|
|
((short*) &ru->common.rxdata[aa][rx_prach_start])[2*i+1] = (short) (.167*(r_im[aa][i] + (iqim*r_re[aa][i]) + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
|
|
}
|
|
}
|
|
} else {
|
|
n_bytes = fread(&ru->common.rxdata[0][rx_prach_start],sizeof(int32_t),frame_parms->samples_per_subframe,input_fd);
|
|
printf("fread %d bytes from file %s\n",n_bytes,input_file);
|
|
if (n_bytes!=frame_parms->samples_per_subframe) {
|
|
printf("expected %d bytes\n",frame_parms->samples_per_subframe);
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
|
|
rx_nr_prach_ru(ru, prach_format, numRA, prachStartSymbol, prachOccasion, frame, slot);
|
|
|
|
gNB->prach_vars.rxsigF = ru->prach_rxsigF[prachOccasion];
|
|
if (n_frames == 1) printf("ncs %d,num_seq %d\n",prach_pdu->num_cs, prach_config->num_prach_fd_occasions_list[fd_occasion].num_root_sequences.value);
|
|
rx_nr_prach(gNB, prach_pdu, prachOccasion, frame, subframe, &preamble_rx, &preamble_energy, &preamble_delay);
|
|
|
|
// printf(" preamble_energy %d preamble_rx %d preamble_tx %d \n", preamble_energy, preamble_rx, preamble_tx);
|
|
|
|
if (preamble_rx != preamble_tx)
|
|
prach_errors++;
|
|
else
|
|
delay_avg += (double)preamble_delay;
|
|
|
|
N_ZC = (prach_sequence_length) ? 139 : 839;
|
|
|
|
if (n_frames==1) {
|
|
printf("preamble %d (tx %d) : energy %d, delay %d\n",preamble_rx,preamble_tx,preamble_energy,preamble_delay);
|
|
#ifdef NR_PRACH_DEBUG
|
|
LOG_M("prach0.m","prach0", &txdata[0][prach_start], frame_parms->samples_per_subframe, 1, 1);
|
|
LOG_M("prachF0.m","prachF0", &gNB->prach_vars.prachF[0], N_ZC, 1, 1);
|
|
LOG_M("rxsig0.m","rxs0", &gNB->common_vars.rxdata[0][subframe*frame_parms->samples_per_subframe], frame_parms->samples_per_subframe, 1, 1);
|
|
LOG_M("ru_rxsig0.m","rxs0", &ru->common.rxdata[0][subframe*frame_parms->samples_per_subframe], frame_parms->samples_per_subframe, 1, 1);
|
|
LOG_M("ru_rxsigF0.m","rxsF0", ru->prach_rxsigF[0][0], N_ZC, 1, 1);
|
|
LOG_M("prach_preamble.m","prachp", &gNB->X_u[0], N_ZC, 1, 1);
|
|
LOG_M("ue_prach_preamble.m","prachp", &UE->X_u[0], N_ZC, 1, 1);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
printf("SNR %f dB, UE Speed %f km/h: errors %d/%d (delay %f)\n", SNR, ue_speed, prach_errors, n_frames, delay_avg/(double)(n_frames-prach_errors));
|
|
if (input_fd)
|
|
break;
|
|
if (prach_errors)
|
|
break;
|
|
|
|
} // UE Speed loop
|
|
if (!prach_errors) {
|
|
printf("PRACH test OK\n");
|
|
break;
|
|
}
|
|
if (input_fd)
|
|
break;
|
|
} //SNR loop
|
|
|
|
for (i=0; i<2; i++) {
|
|
free(s_re[i]);
|
|
free(s_im[i]);
|
|
free(r_re[i]);
|
|
free(r_im[i]);
|
|
}
|
|
|
|
free(s_re);
|
|
free(s_im);
|
|
free(r_re);
|
|
free(r_im);
|
|
|
|
if (input_fd) fclose(input_fd);
|
|
|
|
return(0);
|
|
}
|