/** * * \section COPYRIGHT * * Copyright 2013-2015 The srsLTE Developers. See the * COPYRIGHT file at the top-level directory of this distribution. * * \section LICENSE * * This file is part of the srsLTE library. * * srsLTE is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * srsLTE is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * A copy of the GNU Affero General Public License can be found in * the LICENSE file in the top-level directory of this distribution * and at http://www.gnu.org/licenses/. * */ #include #include "liblte_rrc.h" #include "srsapps/radio/radio_uhd.h" #include "srsapps/ue/phy/phy.h" #include "srsapps/common/tti_sync_cv.h" #include "srsapps/common/log_stdout.h" #include "srsapps/ue/mac/mac.h" /********************************************************************** * Program arguments processing ***********************************************************************/ typedef struct { float uhd_rx_freq; float uhd_tx_freq; float uhd_rx_gain; float uhd_tx_gain; int verbose; }prog_args_t; void args_default(prog_args_t *args) { args->uhd_rx_freq = -1.0; args->uhd_tx_freq = -1.0; args->uhd_rx_gain = -1; // set to autogain args->uhd_tx_gain = -1; args->verbose = 0; } void usage(prog_args_t *args, char *prog) { printf("Usage: %s [gv] -f rx_frequency (in Hz) -F tx_frequency (in Hz)\n", prog); printf("\t-g UHD RX gain [Default AGC]\n"); printf("\t-G UHD TX gain [Default same as RX gain (AGC)]\n"); printf("\t-v [increase verbosity, default none]\n"); } void parse_args(prog_args_t *args, int argc, char **argv) { int opt; args_default(args); while ((opt = getopt(argc, argv, "gGfFv")) != -1) { switch (opt) { case 'g': args->uhd_rx_gain = atof(argv[optind]); break; case 'G': args->uhd_tx_gain = atof(argv[optind]); break; case 'f': args->uhd_rx_freq = atof(argv[optind]); break; case 'F': args->uhd_tx_freq = atof(argv[optind]); break; case 'v': args->verbose++; break; default: usage(args, argv[0]); exit(-1); } } if (args->uhd_rx_freq < 0 || args->uhd_tx_freq < 0) { usage(args, argv[0]); exit(-1); } } // Determine SI messages scheduling as in 36.331 5.2.3 Acquisition of an SI message uint32_t sib_start_tti(uint32_t tti, uint32_t period, uint32_t x) { return (period*10*(1+tti/(period*10))+x)%10240; // the 1 means next opportunity } void setup_mac_phy_sib2(LIBLTE_RRC_SYS_INFO_BLOCK_TYPE_2_STRUCT *sib2, srslte::ue::mac *mac, srslte::ue::phy *phy) { // RACH-CONFIGCOMMON if (sib2->rr_config_common_sib.rach_cnfg.preambles_group_a_cnfg.present) { mac->set_param(srslte::ue::mac_params::RA_NOFGROUPAPREAMBLES, liblte_rrc_message_size_group_a_num[sib2->rr_config_common_sib.rach_cnfg.preambles_group_a_cnfg.size_of_ra]); mac->set_param(srslte::ue::mac_params::RA_MESSAGESIZEA, liblte_rrc_message_size_group_a_num[sib2->rr_config_common_sib.rach_cnfg.preambles_group_a_cnfg.msg_size]); mac->set_param(srslte::ue::mac_params::RA_MESSAGEPOWEROFFSETB, liblte_rrc_message_power_offset_group_b_num[sib2->rr_config_common_sib.rach_cnfg.preambles_group_a_cnfg.msg_pwr_offset_group_b]); } mac->set_param(srslte::ue::mac_params::RA_NOFPREAMBLES, liblte_rrc_number_of_ra_preambles_num[sib2->rr_config_common_sib.rach_cnfg.num_ra_preambles]); mac->set_param(srslte::ue::mac_params::RA_POWERRAMPINGSTEP, liblte_rrc_power_ramping_step_num[sib2->rr_config_common_sib.rach_cnfg.pwr_ramping_step]); mac->set_param(srslte::ue::mac_params::RA_INITRECEIVEDPOWER, liblte_rrc_preamble_initial_received_target_power_num[sib2->rr_config_common_sib.rach_cnfg.preamble_init_rx_target_pwr]); mac->set_param(srslte::ue::mac_params::RA_PREAMBLETRANSMAX, liblte_rrc_preamble_trans_max_num[sib2->rr_config_common_sib.rach_cnfg.preamble_trans_max]); mac->set_param(srslte::ue::mac_params::RA_RESPONSEWINDOW, liblte_rrc_ra_response_window_size_num[sib2->rr_config_common_sib.rach_cnfg.ra_resp_win_size]); mac->set_param(srslte::ue::mac_params::RA_CONTENTIONTIMER, liblte_rrc_mac_contention_resolution_timer_num[sib2->rr_config_common_sib.rach_cnfg.mac_con_res_timer]); mac->set_param(srslte::ue::mac_params::HARQ_MAXMSG3TX, sib2->rr_config_common_sib.rach_cnfg.max_harq_msg3_tx); printf("Set RACH ConfigCommon: NofPreambles=%d, ResponseWindow=%d, ContentionResolutionTimer=%d ms\n", liblte_rrc_number_of_ra_preambles_num[sib2->rr_config_common_sib.rach_cnfg.num_ra_preambles], liblte_rrc_ra_response_window_size_num[sib2->rr_config_common_sib.rach_cnfg.ra_resp_win_size], liblte_rrc_mac_contention_resolution_timer_num[sib2->rr_config_common_sib.rach_cnfg.mac_con_res_timer]); // PDSCH ConfigCommon mac->set_param(srslte::ue::mac_params::PDSCH_RSPOWER, sib2->rr_config_common_sib.pdsch_cnfg.rs_power); mac->set_param(srslte::ue::mac_params::PDSCH_PB, sib2->rr_config_common_sib.pdsch_cnfg.p_b); // PUSCH ConfigCommon phy->set_param(srslte::ue::phy_params::PUSCH_BETA, 10); phy->set_param(srslte::ue::phy_params::PUSCH_EN_64QAM, sib2->rr_config_common_sib.pusch_cnfg.enable_64_qam); phy->set_param(srslte::ue::phy_params::PUSCH_HOPPING_OFFSET, sib2->rr_config_common_sib.pusch_cnfg.pusch_hopping_offset); phy->set_param(srslte::ue::phy_params::PUSCH_HOPPING_N_SB, sib2->rr_config_common_sib.pusch_cnfg.n_sb); phy->set_param(srslte::ue::phy_params::PUSCH_HOPPING_INTRA_SF, sib2->rr_config_common_sib.pusch_cnfg.hopping_mode == LIBLTE_RRC_HOPPING_MODE_INTRA_AND_INTER_SUBFRAME?1:0); phy->set_param(srslte::ue::phy_params::PUSCH_RS_GROUP_HOPPING_EN, sib2->rr_config_common_sib.pusch_cnfg.ul_rs.group_hopping_enabled?1:0); phy->set_param(srslte::ue::phy_params::PUSCH_RS_SEQUENCE_HOPPING_EN, sib2->rr_config_common_sib.pusch_cnfg.ul_rs.sequence_hopping_enabled?1:0); phy->set_param(srslte::ue::phy_params::PUSCH_RS_CYCLIC_SHIFT, sib2->rr_config_common_sib.pusch_cnfg.ul_rs.cyclic_shift); phy->set_param(srslte::ue::phy_params::PUSCH_RS_GROUP_ASSIGNMENT, sib2->rr_config_common_sib.pusch_cnfg.ul_rs.group_assignment_pusch); printf("Set PUSCH ConfigCommon: HopOffset=%d, RSGroup=%d, RSNcs=%d, N_sb=%d\n", sib2->rr_config_common_sib.pusch_cnfg.pusch_hopping_offset, sib2->rr_config_common_sib.pusch_cnfg.ul_rs.group_assignment_pusch, sib2->rr_config_common_sib.pusch_cnfg.ul_rs.cyclic_shift, sib2->rr_config_common_sib.pusch_cnfg.n_sb); // PUCCH ConfigCommon phy->set_param(srslte::ue::phy_params::PUCCH_BETA, 10); phy->set_param(srslte::ue::phy_params::PUCCH_DELTA_SHIFT, liblte_rrc_delta_pucch_shift_num[sib2->rr_config_common_sib.pucch_cnfg.delta_pucch_shift]); phy->set_param(srslte::ue::phy_params::PUCCH_CYCLIC_SHIFT, sib2->rr_config_common_sib.pucch_cnfg.n_cs_an); phy->set_param(srslte::ue::phy_params::PUCCH_N_PUCCH_1, sib2->rr_config_common_sib.pucch_cnfg.n1_pucch_an); phy->set_param(srslte::ue::phy_params::PUCCH_N_RB_2, sib2->rr_config_common_sib.pucch_cnfg.n_rb_cqi); printf("Set PUCCH ConfigCommon: DeltaShift=%d, CyclicShift=%d, N1=%d, NRB=%d\n", liblte_rrc_delta_pucch_shift_num[sib2->rr_config_common_sib.pucch_cnfg.delta_pucch_shift], sib2->rr_config_common_sib.pucch_cnfg.n_cs_an, sib2->rr_config_common_sib.pucch_cnfg.n1_pucch_an, sib2->rr_config_common_sib.pucch_cnfg.n_rb_cqi); // PRACH Configcommon phy->set_param(srslte::ue::phy_params::PRACH_ROOT_SEQ_IDX, sib2->rr_config_common_sib.prach_cnfg.root_sequence_index); phy->set_param(srslte::ue::phy_params::PRACH_HIGH_SPEED_FLAG, sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.high_speed_flag?1:0); phy->set_param(srslte::ue::phy_params::PRACH_FREQ_OFFSET, sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.prach_freq_offset); phy->set_param(srslte::ue::phy_params::PRACH_ZC_CONFIG, sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.zero_correlation_zone_config); phy->set_param(srslte::ue::phy_params::PRACH_CONFIG_INDEX, sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.prach_config_index); printf("Set PRACH ConfigCommon: SeqIdx=%d, HS=%d, FreqOffset=%d, ZC=%d, ConfigIndex=%d\n", sib2->rr_config_common_sib.prach_cnfg.root_sequence_index, sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.high_speed_flag?1:0, sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.prach_freq_offset, sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.zero_correlation_zone_config, sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.prach_config_index); } void process_connsetup(LIBLTE_RRC_CONNECTION_SETUP_STRUCT *msg, srslte::ue::mac *mac, srslte::ue::phy *phy) { mac->set_param(srslte::ue::mac_params::HARQ_MAXTX, liblte_rrc_max_harq_tx_num[msg->rr_cnfg.mac_main_cnfg.explicit_value.ulsch_cnfg.max_harq_tx]); phy->set_param(srslte::ue::phy_params::SR_PUCCH_RESINDEX, msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.sr_pucch_resource_idx); phy->set_param(srslte::ue::phy_params::SR_CONFIG_INDEX, msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.sr_cnfg_idx); mac->set_param(srslte::ue::mac_params::SR_TRANS_MAX, liblte_rrc_dsr_trans_max_num[msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.dsr_trans_max]); mac->set_param(srslte::ue::mac_params::SR_PUCCH_CONFIGURED, 1); phy->set_param(srslte::ue::phy_params::UCI_I_OFFSET_ACK, msg->rr_cnfg.phy_cnfg_ded.pusch_cnfg_ded.beta_offset_ack_idx); phy->set_param(srslte::ue::phy_params::UCI_I_OFFSET_CQI, msg->rr_cnfg.phy_cnfg_ded.pusch_cnfg_ded.beta_offset_cqi_idx); phy->set_param(srslte::ue::phy_params::UCI_I_OFFSET_RI, msg->rr_cnfg.phy_cnfg_ded.pusch_cnfg_ded.beta_offset_ri_idx); } int main(int argc, char *argv[]) { prog_args_t prog_args; srslte::ue::tti_sync_cv ttisync(10240); srslte::radio_uhd radio_uhd; srslte::ue::phy phy; srslte::ue::mac mac; srslte::log_stdout mac_log("MAC"), phy_log("PHY"); parse_args(&prog_args, argc, argv); switch (prog_args.verbose) { case 1: mac_log.set_level_info(); phy_log.set_level_info(); break; case 2: mac_log.set_level_debug(); phy_log.set_level_debug(); break; } // Init Radio and PHY if (prog_args.uhd_rx_gain > 0 && prog_args.uhd_tx_gain > 0) { radio_uhd.init(); radio_uhd.set_rx_gain(prog_args.uhd_rx_gain); radio_uhd.set_tx_gain(prog_args.uhd_tx_gain); phy.init(&radio_uhd, &ttisync, &phy_log); } else { radio_uhd.init_agc(); radio_uhd.set_tx_rx_gain_offset(-10); phy.init_agc(&radio_uhd, &ttisync, &phy_log); } // Init MAC mac.init(&phy, &ttisync, &mac_log); // Set RX freq radio_uhd.set_rx_freq(prog_args.uhd_rx_freq); radio_uhd.set_tx_freq(prog_args.uhd_tx_freq); LIBLTE_BIT_MSG_STRUCT bit_msg; LIBLTE_RRC_MIB_STRUCT bch_msg; LIBLTE_RRC_BCCH_DLSCH_MSG_STRUCT dlsch_msg; LIBLTE_RRC_UL_CCCH_MSG_STRUCT ul_ccch_msg; LIBLTE_RRC_DL_CCCH_MSG_STRUCT dl_ccch_msg; uint32_t si_window_len, sib2_period; int tti; enum {START, SIB1, SIB2, CONNECT} state = START; int n; while(1) { switch(state) { case START: n = mac.recv_bcch_sdu(bit_msg.msg, LIBLTE_MAX_MSG_SIZE); if (n > 0) { bit_msg.N_bits = n; liblte_rrc_unpack_bcch_bch_msg(&bit_msg, &bch_msg); printf("MIB received %d bytes, BW=%s\n", n, liblte_rrc_dl_bandwidth_text[bch_msg.dl_bw]); state = SIB1; } break; case SIB1: n = mac.recv_bcch_sdu(bit_msg.msg, LIBLTE_MAX_MSG_SIZE); if (n > 0) { bit_msg.N_bits = n; liblte_rrc_unpack_bcch_dlsch_msg(&bit_msg, &dlsch_msg); si_window_len = liblte_rrc_si_window_length_num[dlsch_msg.sibs[0].sib.sib1.si_window_length]; sib2_period = liblte_rrc_si_periodicity_num[dlsch_msg.sibs[0].sib.sib1.sched_info[0].si_periodicity]; printf("SIB1 received %d bytes, CellID=%d, si_window=%d, sib2_period=%d\n", n/8, dlsch_msg.sibs[0].sib.sib1.cell_id&0xfff, si_window_len, sib2_period); state = SIB2; } else { tti = mac.get_tti(); mac.set_param(srslte::ue::mac_params::BCCH_SI_WINDOW_ST, sib_start_tti(tti, 2, 5)); mac.set_param(srslte::ue::mac_params::BCCH_SI_WINDOW_LEN, 1); } break; case SIB2: n = mac.recv_bcch_sdu(bit_msg.msg, LIBLTE_MAX_MSG_SIZE); if (n > 0) { // Process SIB2 bit_msg.N_bits = n; liblte_rrc_unpack_bcch_dlsch_msg(&bit_msg, &dlsch_msg); printf("SIB2 received %d bytes\n", n/8); setup_mac_phy_sib2(&dlsch_msg.sibs[0].sib.sib2, &mac, &phy); // Prepare ConnectionRequest packet ul_ccch_msg.msg_type = LIBLTE_RRC_UL_CCCH_MSG_TYPE_RRC_CON_REQ; ul_ccch_msg.msg.rrc_con_req.ue_id_type = LIBLTE_RRC_CON_REQ_UE_ID_TYPE_RANDOM_VALUE; ul_ccch_msg.msg.rrc_con_req.ue_id.random = 1000; ul_ccch_msg.msg.rrc_con_req.cause = LIBLTE_RRC_CON_REQ_EST_CAUSE_MO_DATA; liblte_rrc_pack_ul_ccch_msg(&ul_ccch_msg, &bit_msg); uint64_t uecri=0; uint8_t *ue_cri_ptr = (uint8_t*) &uecri; uint32_t nbytes = bit_msg.N_bits/8; uint8_t *ptr = bit_msg.msg; for (int i=0;i 0) { printf("ConnSetup received %d bytes\n", n/8); bit_msg.N_bits = n; liblte_rrc_unpack_dl_ccch_msg(&bit_msg, &dl_ccch_msg); printf("Response: %s\n", liblte_rrc_dl_ccch_msg_type_text[dl_ccch_msg.msg_type]); switch (dl_ccch_msg.msg_type) { case LIBLTE_RRC_DL_CCCH_MSG_TYPE_RRC_CON_SETUP: // Process ConnectionSetup process_connsetup(&dl_ccch_msg.msg.rrc_con_setup, &mac, &phy); break; case LIBLTE_RRC_DL_CCCH_MSG_TYPE_RRC_CON_REJ: mac.set_param(srslte::ue::mac_params::RNTI_C, 0); break; } // exit(0); } break; } usleep(10000); } }