/** * * \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, MaxTrials=%d\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], liblte_rrc_preamble_trans_max_num[sib2->rr_config_common_sib.rach_cnfg.preamble_trans_max]); // 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) { // FIXME: There's an error parsing the connectionSetup message. This value is hard-coded: 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); 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); printf("Set PHY configuration: n_pucch=%d, configIndex=%d\n", msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.sr_pucch_resource_idx, msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.sr_cnfg_idx); 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]); 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); mac->set_param(srslte::ue::mac_params::BSR_TIMER_RETX, liblte_rrc_retransmission_bsr_timer_num[msg->rr_cnfg.mac_main_cnfg.explicit_value.ulsch_cnfg.retx_bsr_timer]); mac->set_param(srslte::ue::mac_params::BSR_TIMER_PERIODIC, liblte_rrc_periodic_bsr_timer_num[msg->rr_cnfg.mac_main_cnfg.explicit_value.ulsch_cnfg.periodic_bsr_timer]); printf("Set MAC configuration: dsr-TransMAX: %d, harq-MaxReTX=%d, bsr-TimerReTX=%d, bsr-TimerPeriodic=%d\n", liblte_rrc_dsr_trans_max_num[msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.dsr_trans_max], liblte_rrc_max_harq_tx_num[msg->rr_cnfg.mac_main_cnfg.explicit_value.ulsch_cnfg.max_harq_tx], liblte_rrc_retransmission_bsr_timer_num[msg->rr_cnfg.mac_main_cnfg.explicit_value.ulsch_cnfg.retx_bsr_timer], liblte_rrc_periodic_bsr_timer_num[msg->rr_cnfg.mac_main_cnfg.explicit_value.ulsch_cnfg.periodic_bsr_timer]); // Setup radio bearers for (int i=0;irr_cnfg.srb_to_add_mod_list_size;i++) { if (msg->rr_cnfg.srb_to_add_mod_list[i].lc_default_cnfg_present) { printf("Setting up Default Configuration for SRB%d \n", msg->rr_cnfg.srb_to_add_mod_list[i].srb_id); switch(msg->rr_cnfg.srb_to_add_mod_list[i].srb_id) { case 1: mac->setup_lcid(1, 0, 1, -1, -1); break; case 2: mac->setup_lcid(2, 0, 3, -1, -1); break; } } } for (int i=0;irr_cnfg.drb_to_add_mod_list_size;i++) { printf("Setting up DRB%d\n", msg->rr_cnfg.drb_to_add_mod_list[i].drb_id); // todo } } // Hex bytes for the connection setup complete packet // Got hex bytes from http://www.sharetechnote.com/html/RACH_LTE.html uint8_t setupComplete_segm[2][41] ={ { 0x88, 0x00, 0x00, 0x20, 0x21, 0x90, 0xa0, 0x12, 0x00, 0x00, 0x80, 0xf0, 0x5e, 0x3b, 0xf1, 0x04, 0x64, 0x04, 0x1d, 0x20, 0x44, 0x2f, 0xd8, 0x4b, 0xd1, 0x02, 0x00, 0x00, 0x83, 0x03, 0x41, 0xb0, 0xe5, 0x60, 0x13, 0x81, 0x83}, {0xb0, 0x01, 0x01, 0x01, 0x48, 0x4b, 0xd1, 0x00, 0x7d, 0x21, 0x70, 0x28, 0x01, 0x5c, 0x08, 0x80, 0x00, 0xc4, 0x0f, 0x97, 0x80, 0xd0, 0x4c, 0x4b, 0xd1, 0x00, 0xc0, 0x58, 0x44, 0x0d, 0x5d, 0x62, 0x99, 0x74, 0x04, 0x03, 0x80, 0x00, 0x00, 0x00, 0x00} }; uint32_t lengths[2] = {37, 41}; uint8_t reply[2] = {0x00, 0x04}; 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(0); 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, SETUPCOMPLETE, IDLE} 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_SIGNALLING; 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; srslte_vec_fprint_hex(stdout, bit_msg.msg, 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); // Generate and send ConnectionSetupComplete for (int i=0;i<2;i++) { printf("Sending Connection Setup Complete %d\n", i); srslte_bit_pack_vector(setupComplete_segm[i], bit_msg.msg, lengths[i]*8); n=mac.send_dcch0_sdu(bit_msg.msg, lengths[i]*8); if (n < 0) { fprintf(stderr, "Error writting to DCCH0\n"); exit(-1); } } state = SETUPCOMPLETE; 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; case SETUPCOMPLETE: // Wait for ConnectionSetup n = mac.recv_dcch0_sdu(bit_msg.msg, LIBLTE_MAX_MSG_SIZE); if (n > 0) { printf("Received on DCCH0 %d bytes\n", n/8); printf("Send RLC ACK\n"); srslte_bit_pack_vector(reply, bit_msg.msg, 2*8); n=mac.send_dcch0_sdu(bit_msg.msg, 2*8); if (n < 0) { fprintf(stderr, "Error writting to DCCH0\n"); exit(-1); } state = IDLE; } break; case IDLE: break; } usleep(10000); } }