/* * 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 */ /*! \file eNB_scheduler_RA.c * \brief primitives used for random access * \author Navid Nikaein and Raymond Knopp * \date 2010 - 2014 * \email: navid.nikaein@eurecom.fr * \version 1.0 * @ingroup _mac */ /* indented with: indent -kr eNB_scheduler_RA.c */ #include "assertions.h" #include "platform_types.h" #include "msc.h" #include "LAYER2/MAC/mac.h" #include "LAYER2/MAC/mac_extern.h" #include "LAYER2/MAC/mac_proto.h" #include "common/utils/LOG/log.h" #include "nfapi/oai_integration/vendor_ext.h" #include "common/utils/LOG/vcd_signal_dumper.h" #include "UTIL/OPT/opt.h" #include "OCG.h" #include "OCG_extern.h" #include "PHY/LTE_TRANSPORT/transport_common_proto.h" #include "RRC/LTE/rrc_extern.h" #include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h" #include "SCHED/sched_common.h" //#include "LAYER2/MAC/pre_processor.c" #include "pdcp.h" #include "intertask_interface.h" #include "SIMULATION/TOOLS/sim.h" // for taus #include "T.h" #include "executables/softmodem-common.h" #include "common/ran_context.h" #include "LAYER2/MAC/eNB_scheduler_fairRR.h" extern RAN_CONTEXT_t RC; extern const uint8_t pusch_repetition_Table8_2_36213[3][4]; extern int oai_nfapi_hi_dci0_req(nfapi_hi_dci0_request_t *hi_dci0_req); void add_subframe(uint16_t *frameP, uint16_t *subframeP, int offset) { *frameP = (*frameP + ((*subframeP + offset) / 10)) % 1024; *subframeP = ((*subframeP + offset) % 10); } uint16_t sfnsf_add_subframe(uint16_t frameP, uint16_t subframeP, int offset) { add_subframe(&frameP, &subframeP, offset); return frameP<<4|subframeP; } void subtract_subframe(uint16_t *frameP, uint16_t *subframeP, int offset) { if (*subframeP < offset) { *frameP = (*frameP+1024-1)%1024; } *subframeP = (*subframeP+10-offset)%10; } uint16_t sfnsf_subtract_subframe(uint16_t frameP, uint16_t subframeP, int offset) { subtract_subframe(&frameP, &subframeP, offset); return frameP<<4|subframeP; } void add_msg3(module_id_t module_idP, int CC_id, RA_t *ra, frame_t frameP, sub_frame_t subframeP) { eNB_MAC_INST *mac = RC.mac[module_idP]; eNB_RRC_INST *rrc = RC.rrc[module_idP]; COMMON_channels_t *cc = &mac->common_channels[CC_id]; uint8_t j; nfapi_ul_config_request_t *ul_req; nfapi_ul_config_request_body_t *ul_req_body; nfapi_ul_config_request_pdu_t *ul_config_pdu; nfapi_hi_dci0_request_t *hi_dci0_req; nfapi_hi_dci0_request_body_t *hi_dci0_req_body; nfapi_hi_dci0_request_pdu_t *hi_dci0_pdu; uint8_t sf_ahead_dl; uint8_t rvseq[4] = {0, 2, 3, 1}; uint8_t pusch_maxNumRepetitionCEmodeA_r13; ul_req = &mac->UL_req_tmp[CC_id][ra->Msg3_subframe]; ul_req_body = &ul_req->ul_config_request_body; AssertFatal(ra->state != IDLE, "RA is not active for RA %X\n", ra->rnti); if (ra->rach_resource_type > 0) { LOG_D (MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d CE level %d is active, Msg3 in (%d,%d)\n", module_idP, frameP, subframeP, CC_id, ra->rach_resource_type - 1, ra->Msg3_frame, ra->Msg3_subframe); LOG_D (MAC, "Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d)\n", frameP, subframeP, ra->Msg3_frame, ra->Msg3_subframe, ra->msg3_nb_rb, ra->msg3_round); ul_config_pdu = &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus]; memset ((void *) ul_config_pdu, 0, sizeof (nfapi_ul_config_request_pdu_t)); ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_ULSCH_PDU_TYPE; ul_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_ul_config_ulsch_pdu)); ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.handle = mac->ul_handle++; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti = ra->rnti; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start = narrowband_to_first_rb (cc, ra->msg34_narrowband) + ra->msg3_first_rb; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks = ra->msg3_nb_rb; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.modulation_type = 2; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.cyclic_shift_2_for_drms = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_enabled_flag = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_bits = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.new_data_indication = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.redundancy_version = rvseq[ra->msg3_round]; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.ul_tx_mode = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.current_tx_nb = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.n_srs = 1; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.size = get_TBS_UL (ra->msg3_mcs, ra->msg3_nb_rb); // Re13 fields ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.ue_type = ra->rach_resource_type > 2 ? 2 : 1; if (ra->rach_resource_type > 0) { pusch_maxNumRepetitionCEmodeA_r13= *(rrc->configuration.pusch_maxNumRepetitionCEmodeA_r13[CC_id]); ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.total_number_of_repetitions= pusch_repetition_Table8_2_36213[pusch_maxNumRepetitionCEmodeA_r13][ra->pusch_repetition_levels]; } else { ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.total_number_of_repetitions=1; } ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.repetition_number = 1; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.initial_transmission_sf_io = (ra->Msg3_frame * 10) + ra->Msg3_subframe; ul_req_body->number_of_pdus++; } // if (ra->rach_resource_type>0) { else { LOG_D(MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d RA is active, Msg3 in (%d,%d)\n", module_idP, frameP, subframeP, CC_id, ra->Msg3_frame, ra->Msg3_subframe); LOG_D(MAC, "Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d,%d) for rnti: %d\n", frameP, subframeP, ra->Msg3_frame, ra->Msg3_subframe, ra->msg3_nb_rb, ra->msg3_first_rb, ra->msg3_round, ra->rnti); ul_config_pdu = &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus]; memset((void *) ul_config_pdu, 0, sizeof(nfapi_ul_config_request_pdu_t)); ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_ULSCH_PDU_TYPE; ul_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_ul_config_ulsch_pdu)); ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_ULSCH_PDU_REL8_TAG; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.handle = mac->ul_handle++; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti = ra->rnti; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start = ra->msg3_first_rb; AssertFatal(ra->msg3_nb_rb > 0, "nb_rb = 0\n"); ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks = ra->msg3_nb_rb; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.modulation_type = 2; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.cyclic_shift_2_for_drms = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_enabled_flag = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_bits = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.new_data_indication = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.redundancy_version = rvseq[ra->msg3_round]; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number = subframe2harqpid(cc, ra->Msg3_frame, ra->Msg3_subframe); ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.ul_tx_mode = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.current_tx_nb = 0; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.n_srs = 1; ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.size = get_TBS_UL(10, ra->msg3_nb_rb); ul_req_body->number_of_pdus++; ul_req_body->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG; ul_req->sfn_sf = ra->Msg3_frame<<4|ra->Msg3_subframe; ul_req->header.message_id = NFAPI_UL_CONFIG_REQUEST; // save UL scheduling information for preprocessor for (j = 0; j < ra->msg3_nb_rb; j++) cc->vrb_map_UL[ra->msg3_first_rb + j] = 1; LOG_D(MAC, "MSG3: UL_CONFIG SFN/SF:%d number_of_pdus:%d ra->msg3_round:%d\n", NFAPI_SFNSF2DEC(ul_req->sfn_sf), ul_req_body->number_of_pdus, ra->msg3_round); if (ra->msg3_round != 0) { // program HI too sf_ahead_dl = ul_subframe2_k_phich(cc, subframeP); hi_dci0_req = &mac->HI_DCI0_req[CC_id][(subframeP+sf_ahead_dl)%10]; hi_dci0_req_body = &hi_dci0_req->hi_dci0_request_body; hi_dci0_pdu = &hi_dci0_req_body->hi_dci0_pdu_list[hi_dci0_req_body->number_of_dci + hi_dci0_req_body->number_of_hi]; memset((void *) hi_dci0_pdu, 0, sizeof(nfapi_hi_dci0_request_pdu_t)); hi_dci0_pdu->pdu_type = NFAPI_HI_DCI0_HI_PDU_TYPE; hi_dci0_pdu->pdu_size = 2 + sizeof(nfapi_hi_dci0_hi_pdu); hi_dci0_pdu->hi_pdu.hi_pdu_rel8.tl.tag = NFAPI_HI_DCI0_REQUEST_HI_PDU_REL8_TAG; hi_dci0_pdu->hi_pdu.hi_pdu_rel8.resource_block_start = ra->msg3_first_rb; hi_dci0_pdu->hi_pdu.hi_pdu_rel8.cyclic_shift_2_for_drms = 0; hi_dci0_pdu->hi_pdu.hi_pdu_rel8.hi_value = 0; hi_dci0_req_body->number_of_hi++; hi_dci0_req_body->sfnsf = sfnsf_add_subframe(ra->Msg3_frame, ra->Msg3_subframe, 0); hi_dci0_req_body->tl.tag = NFAPI_HI_DCI0_REQUEST_BODY_TAG; hi_dci0_req->sfn_sf = sfnsf_add_subframe(frameP, subframeP, sf_ahead_dl); hi_dci0_req->header.message_id = NFAPI_HI_DCI0_REQUEST; if (NFAPI_MODE != NFAPI_MONOLITHIC) { oai_nfapi_hi_dci0_req(hi_dci0_req); hi_dci0_req_body->number_of_hi=0; } LOG_D(MAC, "MSG3: HI_DCI0 SFN/SF:%d number_of_dci:%d number_of_hi:%d\n", NFAPI_SFNSF2DEC(hi_dci0_req->sfn_sf), hi_dci0_req_body->number_of_dci, hi_dci0_req_body->number_of_hi); // save UL scheduling information for preprocessor for (j = 0; j < ra->msg3_nb_rb; j++) cc->vrb_map_UL[ra->msg3_first_rb + j] = 1; LOG_D(MAC, "[eNB %d][PUSCH-RA %x] CC_id %d Frame %d subframeP %d Scheduled (PHICH) RA (mcs %d, first rb %d, nb_rb %d,round %d)\n", module_idP, ra->rnti, CC_id, frameP, subframeP, 10, 1, 1, ra->msg3_round - 1); } // if (ra->msg3_round != 0) { // program HI too } // non-BL/CE UE case } //------------------------------------------------------------------------------ /* * Generate the RAR (message2) */ void generate_Msg2(module_id_t module_idP, int CC_idP, frame_t frameP, sub_frame_t subframeP, RA_t *ra) //------------------------------------------------------------------------------ { eNB_MAC_INST *mac = RC.mac[module_idP]; eNB_RRC_INST *rrc = RC.rrc[module_idP]; COMMON_channels_t *cc = mac->common_channels; uint8_t *vrb_map = NULL; int first_rb = 0; int N_RB_DL = 0; nfapi_dl_config_request_pdu_t *dl_config_pdu = NULL; nfapi_tx_request_pdu_t *TX_req = NULL; nfapi_dl_config_request_body_t *dl_req_body = NULL; vrb_map = cc[CC_idP].vrb_map; dl_req_body = &mac->DL_req[CC_idP].dl_config_request_body; dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu]; N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth); uint8_t PUSCH_Rep_Level; int rmax = 0; int rep = 0; int reps = 0; int num_nb = 0; first_rb = 0; struct LTE_PRACH_ConfigSIB_v1310 *ext4_prach = NULL; LTE_PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13 = NULL; LTE_PRACH_ParametersCE_r13_t *p[4] = { NULL, NULL, NULL, NULL }; uint16_t absSF = (10 * frameP) + subframeP; uint16_t absSF_Msg2 = (10 * ra->Msg2_frame) + ra->Msg2_subframe; if (ra->rach_resource_type > 0) { PUSCH_Rep_Level= *(rrc->configuration.pusch_repetitionLevelCEmodeA_r13[CC_idP]); } else { PUSCH_Rep_Level= 0; } if (absSF > absSF_Msg2) { return; // we're not ready yet } if (cc[CC_idP].mib->message.schedulingInfoSIB1_BR_r13 > 0 && cc[CC_idP].radioResourceConfigCommon_BR) { ext4_prach = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310; prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13; switch (prach_ParametersListCE_r13->list.count) { case 4: p[3] = prach_ParametersListCE_r13->list.array[3]; case 3: p[2] = prach_ParametersListCE_r13->list.array[2]; case 2: p[1] = prach_ParametersListCE_r13->list.array[1]; case 1: p[0] = prach_ParametersListCE_r13->list.array[0]; break; default: AssertFatal (1 == 0, "Illegal count for prach_ParametersListCE_r13 %d\n", (int) prach_ParametersListCE_r13->list.count); break; } } if (ra->rach_resource_type > 0) { /* This uses an MPDCCH Type 2 common allocation according to Section 9.1.5 36-213 * Parameters: * p = 2 + 4 PRB set (number of PRB pairs 3) * rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3 * if CELevel = 0,1 => Table 9.1.5-1b for MPDCCH candidates * if CELevel = 2,3 => Table 9.1.5-2b for MPDCCH candidates * distributed transmission */ /* rmax from SIB2 information */ AssertFatal (rmax < 9, "rmax > 8!\n"); // not sure of this assertion rmax = 1 << p[ra->rach_resource_type - 1]->mpdcch_NumRepetition_RA_r13; /* Choose r1 by default for RAR (Table 9.1.5-5) */ rep = 0; /* Get actual repetition count from Table 9.1.5-3 */ reps = (rmax <= 8) ? (1 << rep) : (rmax >> (3 - rep)); /* Get narrowband according to higher-layer config */ num_nb = p[ra->rach_resource_type - 1]->mpdcch_NarrowbandsToMonitor_r13.list.count; ra->msg2_narrowband = *p[ra->rach_resource_type - 1]->mpdcch_NarrowbandsToMonitor_r13.list.array[ra->preamble_index % num_nb] - 1; first_rb = narrowband_to_first_rb(&cc[CC_idP], ra->msg2_narrowband); if ((ra->msg2_mpdcch_repetition_cnt == 0) && (mpdcch_sf_condition(mac, CC_idP, frameP, subframeP, rmax, TYPE2, -1) > 0)) { ra->msg2_mpdcch_done = 0; /* MPDCCH configuration for RAR */ LOG_D(MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2 for CE Level %d, Programming MPDCCH %d repetitions\n", module_idP, frameP, subframeP, ra->rach_resource_type - 1, reps); memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t)); dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE; dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_mpdcch_pdu)); dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format = (ra->rach_resource_type > 1) ? 11 : 10; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band = ra->msg2_narrowband; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_prb_pairs = 6; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment = 0; // Note: this can be dynamic dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_tansmission_type = 1; // imposed (9.1.5 in 213) for Type 2 Common search space AssertFatal (cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 != NULL, "cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 is null\n"); dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13; LOG_E(MAC, "start_symbol = %d \n", dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol); dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index = 0; // Note: this should be dynamic dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level = 24; // OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4 dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type = 2; // RA-RNTI dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = ra->RA_rnti; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode = (ra->rach_resource_type < 3) ? 1 : 2; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init = cc[CC_idP].physCellId; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.initial_transmission_sf_io = (frameP * 10) + subframeP; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power = 6000; // 0dB dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding = getRIV(6, 0, 6) | (ra->msg2_narrowband<<5); dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs = 0; // adjust according to size of RAR, 208 bits with N1A_PRB=3 dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels = 0; // fix to 4 for now dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_resource_offset = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_subframe_repetition_number = rep; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc = 1; // N1A_PRB=3 (36.212) => 56 bits dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index_length = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.allocate_prach_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.frequency_hopping_enabled_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding = 0; // this is not needed by OAI L1, but should be filled in dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_tx_antenna_ports = 1; ra->msg2_mpdcch_repetition_cnt++; dl_req_body->number_pdu++; ra->Msg2_subframe = (ra->Msg2_subframe + 9) % 10; } // repetition_count == 0 && SF condition met if (ra->msg2_mpdcch_repetition_cnt > 0) { // we're in a stream of repetitions if ((ra->msg2_mpdcch_repetition_cnt == reps) && (ra->msg2_mpdcch_done == 0)) { // this is the last mpdcch repetition ra->msg2_mpdcch_done = 1; if (cc[CC_idP].tdd_Config == NULL) { // FDD case // wait 2 subframes for PDSCH transmission if (subframeP > 7) ra->Msg2_frame = (frameP + 1) & 1023; else ra->Msg2_frame = frameP; ra->Msg2_subframe = (subframeP + 2) % 10; // +2 is the "n+x" from Section 7.1.11 in 36.213 LOG_D(MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, programmed Msg2 for %d.%d\n", module_idP, frameP, subframeP, ra->Msg2_frame, ra->Msg2_subframe); } else { AssertFatal(1 == 0, "TDD case not done yet\n"); } } else if (ra->msg2_mpdcch_done == 0) { // mpdcch_repetition_count != reps LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, MPDCCH repetition %d\n", module_idP, frameP, subframeP, ra->msg2_mpdcch_repetition_cnt); ra->msg2_mpdcch_repetition_cnt++; } ra->pusch_repetition_levels = PUSCH_Rep_Level; if((ra->Msg2_frame == frameP) && (ra->Msg2_subframe == subframeP)) { /* Program PDSCH */ LOG_D(MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming PDSCH\n", module_idP, frameP, subframeP); dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu]; memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t)); dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE; dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_dlsch_pdu)); dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index = mac->pdu_index[CC_idP]; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->RA_rnti; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0; // localized dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV(N_RB_DL, first_rb, 6); dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2; // QPSK dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1; // first block dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme = (cc[CC_idP].p_eNB == 1) ? 0 : 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers = 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands = 1; // dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index = ; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity = 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4; // 0 dB dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize(cc[CC_idP].mib->message.dl_Bandwidth); // ignored dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode = (cc[CC_idP].p_eNB == 1) ? 1 : 2; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband = 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1; // dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector = ; /* Rel10 fields */ dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13; /* Rel13 fields */ dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type = (ra->rach_resource_type < 3) ? 1 : 2;; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type = 2; // not SI message dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.initial_transmission_sf_io = (10 * frameP) + subframeP; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag = 0; dl_req_body->number_pdu++; fill_rar_br(mac, CC_idP, ra, frameP, subframeP, cc[CC_idP].RAR_pdu.payload, ra->rach_resource_type - 1); /* Program UL processing for Msg3, same as regular LTE */ get_Msg3alloc (&cc[CC_idP], subframeP, frameP, &ra->Msg3_frame, &ra->Msg3_subframe); add_msg3 (module_idP, CC_idP, ra, frameP, subframeP); ra->state = WAITMSG3; /* DL request */ LOG_D(MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming TX Req\n", module_idP, frameP, subframeP); mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP; TX_req = &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->TX_req[CC_idP].tx_request_body.number_of_pdus]; TX_req->pdu_length = 7; // This should be changed if we have more than 1 preamble TX_req->pdu_index = mac->pdu_index[CC_idP]++; TX_req->num_segments = 1; TX_req->segments[0].segment_length = 7; TX_req->segments[0].segment_data = cc[CC_idP].RAR_pdu.payload; mac->TX_req[CC_idP].tx_request_body.number_of_pdus++; } } } else { if ((ra->Msg2_frame == frameP) && (ra->Msg2_subframe == subframeP)) { LOG_D(MAC, "[eNB %d] CC_id %d Frame %d, subframeP %d: Generating RAR DCI, state %d\n", module_idP, CC_idP, frameP, subframeP, ra->state); // Allocate 4 PRBS starting in RB 0 first_rb = 0; vrb_map[first_rb] = 1; vrb_map[first_rb + 1] = 1; vrb_map[first_rb + 2] = 1; vrb_map[first_rb + 3] = 1; memset((void *) dl_config_pdu, 0, sizeof(nfapi_dl_config_request_pdu_t)); dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE; dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dci_dl_pdu)); dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DCI_DL_PDU_REL8_TAG; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format = NFAPI_DL_DCI_FORMAT_1A; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level = 4; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti = ra->RA_rnti; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type = 2; // RA-RNTI : see Table 4-10 from SCF082 - nFAPI specifications dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power = 6000; // equal to RS power dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process = 0; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tpc = 1; // no TPC dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.new_data_indicator_1 = 1; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_1 = 0; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.redundancy_version_1 = 0; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.virtual_resource_block_assignment_flag = 0; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding = getRIV(N_RB_DL, first_rb, 4); // This checks if the above DCI allocation is feasible in current subframe if (!CCE_allocation_infeasible(module_idP, CC_idP, 0, subframeP, dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level, ra->RA_rnti)) { LOG_D(MAC, "Frame %d: Subframe %d : Adding common DCI for RA_RNTI %x\n", frameP, subframeP, ra->RA_rnti); dl_req_body->number_dci++; dl_req_body->number_pdu++; dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu]; memset((void *) dl_config_pdu, 0, sizeof(nfapi_dl_config_request_pdu_t)); dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE; dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dlsch_pdu)); dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL8_TAG; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index = mac->pdu_index[CC_idP]; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->RA_rnti; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2; // format 1A/1B/1D dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0; // localized dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV(N_RB_DL, first_rb, 4); dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2; //QPSK dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1; // first block dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme = (cc->p_eNB == 1) ? 0 : 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers = 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands = 1; // dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index = ; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity = 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4; // 0 dB dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize(cc->mib->message.dl_Bandwidth); // ignored dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode = (cc->p_eNB == 1) ? 1 : 2; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband = 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1; // dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector = ; dl_req_body->number_pdu++; mac->DL_req[CC_idP].sfn_sf = frameP<<4 | subframeP; // Program UL processing for Msg3 get_Msg3alloc(&cc[CC_idP], subframeP, frameP,&ra->Msg3_frame, &ra->Msg3_subframe); LOG_D(MAC, "Frame %d, Subframe %d: Setting Msg3 reception for Frame %d Subframe %d\n", frameP, subframeP, ra->Msg3_frame, ra->Msg3_subframe); fill_rar(module_idP, CC_idP, ra, frameP, cc[CC_idP].RAR_pdu.payload, N_RB_DL, 7); add_msg3(module_idP, CC_idP, ra, frameP, subframeP); ra->state = WAITMSG3; LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:WAITMSG3\n", module_idP, frameP, subframeP); T(T_ENB_MAC_UE_DL_RAR_PDU_WITH_DATA, T_INT(module_idP), T_INT(CC_idP), T_INT(ra->RA_rnti), T_INT(frameP), T_INT(subframeP), T_INT(0 /*harq_pid always 0? */ ), T_BUFFER(cc[CC_idP].RAR_pdu.payload, 7)); // DL request mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP; TX_req = &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->TX_req[CC_idP].tx_request_body.number_of_pdus]; TX_req->pdu_length = 7; // This should be changed if we have more than 1 preamble TX_req->pdu_index = mac->pdu_index[CC_idP]++; TX_req->num_segments = 1; TX_req->segments[0].segment_length = 7; TX_req->segments[0].segment_data = cc[CC_idP].RAR_pdu.payload; mac->TX_req[CC_idP].tx_request_body.number_of_pdus++; if(RC.mac[module_idP]->scheduler_mode == SCHED_MODE_FAIR_RR) { set_dl_ue_select_msg2(CC_idP, 4, -1, ra->rnti); } } // PDCCH CCE allocation is feasible } // Msg2 frame/subframe condition } // else BL/CE } //------------------------------------------------------------------------------ /* * Generate message 4 of RA procedure (RRC connection setup) */ void generate_Msg4(module_id_t module_idP, int CC_idP, frame_t frameP, sub_frame_t subframeP, RA_t *ra) //------------------------------------------------------------------------------ { eNB_MAC_INST *mac = RC.mac[module_idP]; COMMON_channels_t *cc = mac->common_channels; UE_list_t *UE_list = &(mac->UE_list); int16_t rrc_sdu_length = 0; uint16_t msg4_padding = 0; uint16_t msg4_post_padding = 0; uint16_t msg4_header = 0; int UE_id = -1; int first_rb = 0; int N_RB_DL = 0; uint8_t lcid = 0; uint8_t offset = 0; uint8_t *vrb_map = NULL; nfapi_dl_config_request_pdu_t *dl_config_pdu = NULL; nfapi_ul_config_request_pdu_t *ul_config_pdu = NULL; nfapi_tx_request_pdu_t *TX_req = NULL; nfapi_dl_config_request_t *dl_req = NULL; nfapi_dl_config_request_body_t *dl_req_body = NULL; nfapi_ul_config_request_body_t *ul_req_body = NULL; int rmax = 0; int rep = 0; int reps = 0; first_rb = 0; struct LTE_PRACH_ConfigSIB_v1310 *ext4_prach = NULL; struct LTE_PUCCH_ConfigCommon_v1310 *ext4_pucch = NULL; LTE_PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13 = NULL; struct LTE_N1PUCCH_AN_InfoList_r13 *pucch_N1PUCCH_AN_InfoList_r13 = NULL; LTE_PRACH_ParametersCE_r13_t *p[4] = { NULL, NULL, NULL, NULL }; int pucchreps[4] = { 1, 1, 1, 1 }; int n1pucchan[4] = { 0, 0, 0, 0 }; if (cc[CC_idP].mib->message.schedulingInfoSIB1_BR_r13 > 0 && cc[CC_idP].radioResourceConfigCommon_BR) { ext4_prach = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310; prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13; ext4_pucch = cc[CC_idP].radioResourceConfigCommon_BR->ext4->pucch_ConfigCommon_v1310; pucch_N1PUCCH_AN_InfoList_r13 = ext4_pucch->n1PUCCH_AN_InfoList_r13; AssertFatal (prach_ParametersListCE_r13 != NULL, "prach_ParametersListCE_r13 is null\n"); AssertFatal (pucch_N1PUCCH_AN_InfoList_r13 != NULL, "pucch_N1PUCCH_AN_InfoList_r13 is null\n"); /* Check to verify CE-Level compatibility in SIB2_BR */ AssertFatal (prach_ParametersListCE_r13->list.count == pucch_N1PUCCH_AN_InfoList_r13->list.count, "prach_ParametersListCE_r13->list.count!= pucch_N1PUCCH_AN_InfoList_r13->list.count\n"); switch (prach_ParametersListCE_r13->list.count) { case 4: p[3] = prach_ParametersListCE_r13->list.array[3]; n1pucchan[3] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[3]; AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level3_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level3 shouldn't be NULL\n"); pucchreps[3] = (int) (4 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level3_r13); case 3: p[2] = prach_ParametersListCE_r13->list.array[2]; n1pucchan[2] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[2]; AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level2 shouldn't be NULL\n"); pucchreps[2] = (int) (4 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13); case 2: p[1] = prach_ParametersListCE_r13->list.array[1]; n1pucchan[1] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[1]; AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level1_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level1 shouldn't be NULL\n"); pucchreps[1] = (int) (1 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level1_r13); case 1: p[0] = prach_ParametersListCE_r13->list.array[0]; n1pucchan[0] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[0]; AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level0_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level0 shouldn't be NULL\n"); pucchreps[0] = (int) (1 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level0_r13); break; default: AssertFatal(1 == 0, "Illegal count for prach_ParametersListCE_r13 %d\n", prach_ParametersListCE_r13->list.count); } } vrb_map = cc[CC_idP].vrb_map; dl_req = &mac->DL_req[CC_idP]; dl_req_body = &dl_req->dl_config_request_body; dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu]; N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth); UE_id = find_UE_id(module_idP, ra->rnti); if (UE_id < 0) { LOG_E(MAC, "Can't find UE for t-crnti %x, kill RA procedure for this UE\n", ra->rnti); cancel_ra_proc(module_idP, CC_idP, frameP, ra->rnti); return; } // set HARQ process round to 0 for this UE ra->harq_pid = frame_subframe2_dl_harq_pid(cc->tdd_Config,frameP,subframeP); /* // Get RRCConnectionSetup for Piggyback rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH, 1, // 1 transport block &cc[CC_idP].CCCH_pdu.payload[0], 0); // not used in this case if(rrc_sdu_length <= 0) { LOG_D(MAC,"[MAC][eNB Scheduler] CCCH not allocated (%d)\n",rrc_sdu_length); return; } //AssertFatal(rrc_sdu_length > 0, //"[MAC][eNB Scheduler] CCCH not allocated\n"); LOG_D(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: UE_id %d, rrc_sdu_length %d\n", module_idP, CC_idP, frameP, subframeP, UE_id, rrc_sdu_length);*/ if (ra->rach_resource_type > 0) { ra->harq_pid = 0; // Generate DCI + repetitions first // This uses an MPDCCH Type 2 allocation according to Section 9.1.5 36-213, Type2 common allocation according to Table 7.1-8 (36-213) // Parameters: // p=2+4 PRB set (number of PRB pairs 6) // rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3 // if CELevel = 0,1 => Table 9.1.5-1b for MPDCCH candidates // if CELevel = 2,3 => Table 9.1.5-2b for MPDCCH candidates // distributed transmission // rmax from SIB2 information rmax = 1<rach_resource_type - 1]->mpdcch_NumRepetition_RA_r13; // choose r3 by default for Msg4 (this is ok from table 9.1.5-3 for rmax = >=4, if we choose rmax <4 it has to be less rep = 0; // get actual repetition count from Table 9.1.5-3 reps = (rmax <= 8) ? (1 << rep) : (rmax >> (3 - rep)); // get first narrowband first_rb = narrowband_to_first_rb (&cc[CC_idP], ra->msg34_narrowband); if ((ra->msg4_mpdcch_repetition_cnt == 0) && (mpdcch_sf_condition (mac, CC_idP, frameP, subframeP, rmax, TYPE2, -1) > 0)) { // Get RRCConnectionSetup for Piggyback ra->msg4_rrc_sdu_length = mac_rrc_data_req (module_idP, CC_idP, frameP, CCCH, UE_RNTI(module_idP, UE_id), 1, // 1 transport block &cc[CC_idP].CCCH_pdu.payload[0], 0); // not used in this case AssertFatal (ra->msg4_rrc_sdu_length > 0, "[MAC][eNB Scheduler] CCCH not allocated\n"); LOG_D (MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: UE_id %d, rrc_sdu_length %d, dl_req->num_pdu %d\n", module_idP, CC_idP, frameP, subframeP, UE_id, ra->msg4_rrc_sdu_length, dl_req_body->number_pdu); // MPDCCH configuration for Msg4 ra->msg4_mpdcch_done=0; memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t)); dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE; dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_mpdcch_pdu)); dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format = (ra->rach_resource_type > 1) ? 11 : 10; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band = ra->msg2_narrowband; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_prb_pairs = 6; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment = 0; // Note: this can be dynamic dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_tansmission_type = 1; // imposed (9.1.5 in 213) for Type 2 Common search space AssertFatal (cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 != NULL, "cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 is null\n"); dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index = 0; // Note: this should be dynamic dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level = 24; // OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4 dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type = 0; // t-CRNTI dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = ra->rnti; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode = (ra->rach_resource_type < 3) ? 1 : 2; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init = cc[CC_idP].physCellId; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.initial_transmission_sf_io = (frameP * 10) + subframeP; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power = 6000; // 0dB dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding = getRIV (6, 0, 6) | (ra->msg2_narrowband<<5); dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs = 4; // adjust according to size of RAR, 208 bits with N1A_PRB=3 dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels = 0; // fix to 4 for now dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_resource_offset = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_subframe_repetition_number = rep; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc = 3; // N1A_PRB=3 (36.212) => 56 bits dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index_length = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.allocate_prach_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.frequency_hopping_enabled_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication = 0; dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding = 0; // this is not needed by OAI L1, but should be filled in dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_tx_antenna_ports = 1; ra->msg4_mpdcch_repetition_cnt++; dl_req_body->number_pdu++; ra->msg4_TBsize = get_TBS_DL(dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs, 6); } //repetition_count==0 && SF condition met if ((ra->msg4_mpdcch_repetition_cnt > 0)&& (ra->msg4_mpdcch_done==0)) { // we're in a stream of repetitions LOG_D(MAC,"SFN.SF %d.%d : msg4 mpdcch repetition number %d/%d\n", frameP,subframeP,ra->msg4_mpdcch_repetition_cnt,reps); if (ra->msg4_mpdcch_repetition_cnt == reps) { // this is the last mpdcch repetition ra->msg4_mpdcch_done = 1; if (cc[CC_idP].tdd_Config == NULL) { // FDD case // wait 2 subframes for PDSCH transmission if (subframeP > 7) ra->Msg4_frame = (frameP + 1) & 1023; else ra->Msg4_frame = frameP; ra->Msg4_subframe = (subframeP + 2) % 10; LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Set Msg4 PDSCH in %d.%d\n", module_idP, CC_idP, frameP, subframeP, ra->Msg4_frame,ra->Msg4_subframe); } else { AssertFatal (1 == 0, "TDD case not done yet\n"); } } else if (ra->msg4_mpdcch_done==0) ra->msg4_mpdcch_repetition_cnt++; } // mpdcch_repetition_count == reps else if ((ra->Msg4_frame == frameP) && (ra->Msg4_subframe == subframeP)) { // Program PDSCH LOG_D (MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating Msg4 BR with RRC Piggyback (ce_level %d RNTI %x)\n", module_idP, CC_idP, frameP, subframeP, ra->rach_resource_type - 1, ra->rnti); dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu]; memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t)); dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE; dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_dlsch_pdu)); dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index = mac->pdu_index[CC_idP]; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->rnti; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2; // format 1A/1B/1D dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0; // localized dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV (N_RB_DL, first_rb, 6); // check that this isn't getRIV(6,0,6) dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2; //QPSK dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1; // first block dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme = (cc[CC_idP].p_eNB == 1) ? 0 : 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers = 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands = 1; // dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index = ; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity = 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4; // 0 dB dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize (cc[CC_idP].mib->message.dl_Bandwidth); // ignored dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode = (cc[CC_idP].p_eNB == 1) ? 1 : 2; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband = 1; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1; // dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector = ; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type = (ra->rach_resource_type < 3) ? 1 : 2; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type = 2; // not SI message dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.initial_transmission_sf_io = (10 * frameP) + subframeP; dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag = 0; dl_req_body->number_pdu++; ra->state = WAITMSG4ACK; lcid = 0; UE_list->UE_sched_ctrl[UE_id].round[CC_idP][ra->harq_pid] = 0; msg4_header = 1 + 6 + 1; // CR header, CR CE, SDU header AssertFatal((ra->msg4_TBsize - ra->msg4_rrc_sdu_length - msg4_header)>=0, "msg4_TBS %d is too small, change mcs to increase by %d bytes\n",ra->msg4_TBsize,ra->msg4_rrc_sdu_length+msg4_header-ra->msg4_TBsize); if ((ra->msg4_TBsize - ra->msg4_rrc_sdu_length - msg4_header) <= 2) { msg4_padding = ra->msg4_TBsize - ra->msg4_rrc_sdu_length - msg4_header; msg4_post_padding = 0; } else { msg4_padding = 0; msg4_post_padding = ra->msg4_TBsize - ra->msg4_rrc_sdu_length - msg4_header - 1; } LOG_D (MAC, "[eNB %d][RAPROC] CC_id %d Frame %d subframeP %d Msg4 : TBS %d, sdu_len %d, msg4_header %d, msg4_padding %d, msg4_post_padding %d\n", module_idP, CC_idP, frameP, subframeP, ra->msg4_TBsize, ra->msg4_rrc_sdu_length, msg4_header, msg4_padding, msg4_post_padding); DevAssert (UE_id != UE_INDEX_INVALID); // FIXME not sure how to gracefully return // CHECK THIS: &cc[CC_idP].CCCH_pdu.payload[0] offset = generate_dlsch_header ((unsigned char *) mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], 1, //num_sdus (unsigned short *) &ra->msg4_rrc_sdu_length, // &lcid, // sdu_lcid 255, // no drx 31, // no timing advance ra->cont_res_id, // contention res id msg4_padding, // no padding msg4_post_padding); memcpy ((void *) &mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0][(unsigned char) offset], &cc[CC_idP].CCCH_pdu.payload[0], ra->msg4_rrc_sdu_length); // DL request mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP; TX_req = &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->TX_req[CC_idP].tx_request_body.number_of_pdus]; TX_req->pdu_length = ra->msg4_TBsize; TX_req->pdu_index = mac->pdu_index[CC_idP]++; TX_req->num_segments = 1; TX_req->segments[0].segment_length = ra->msg4_TBsize; TX_req->segments[0].segment_data = mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0]; mac->TX_req[CC_idP].tx_request_body.number_of_pdus++; // Program ACK/NAK for Msg4 PDSCH int absSF = (frameP * 10) + subframeP; // see Section 10.2 from 36.213 int ackNAK_absSF = absSF + reps + 3; AssertFatal (reps == 1, "Have to handle programming of ACK when PDSCH repetitions is > 1\n"); ul_req_body = &mac->UL_req_tmp[CC_idP][ackNAK_absSF % 10].ul_config_request_body; ul_config_pdu = &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus]; ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE; ul_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_ul_config_uci_harq_pdu)); ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL8_TAG; ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.handle = 0; // don't know how to use this ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.rnti = ra->rnti; ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL13_TAG; ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.ue_type = (ra->rach_resource_type < 3) ? 1 : 2; ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.empty_symbols = 0; ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.total_number_of_repetitions = pucchreps[ra->rach_resource_type - 1]; ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.repetition_number = 0; // Note need to keep sending this across reptitions!!!! Not really for PUCCH, to ask small-cell forum, we'll see for the other messages, maybe parameters change across repetitions and FAPI has to provide for that if (cc[CC_idP].tdd_Config == NULL) { // FDD case ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel9_fdd.n_pucch_1_0 = n1pucchan[ra->rach_resource_type - 1]; // NOTE: How to fill in the rest of the n_pucch_1_0 information 213 Section 10.1.2.1 in the general case // = N_ECCE_q + Delta_ARO + n1pucchan[ce_level] // higher in the MPDCCH configuration, N_ECCE_q is hard-coded to 0, and harq resource offset to 0 => // Delta_ARO = 0 from Table 10.1.2.1-1 ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel9_fdd.harq_size = 1; // 1-bit ACK/NAK ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel9_fdd.number_of_pucch_resources = 1; } else { AssertFatal (1 == 0, "PUCCH configuration for ACK/NAK not handled yet for TDD BL/CE case\n"); } ul_req_body->number_of_pdus++; T (T_ENB_MAC_UE_DL_PDU_WITH_DATA, T_INT (module_idP), T_INT (CC_idP), T_INT (ra->rnti), T_INT (frameP), T_INT (subframeP), T_INT (0 /*harq_pid always 0? */ ), T_BUFFER (&mac->UE_list.DLSCH_pdu[CC_idP][0][UE_id].payload[0], ra->msg4_TBsize)); trace_pdu (DIRECTION_DOWNLINK, (uint8_t *) mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], ra->msg4_rrc_sdu_length, UE_id, 3, UE_RNTI (module_idP, UE_id), mac->frame, mac->subframe, 0, 0); } // Msg4 frame/subframe } // rach_resource_type > 0 else { // This is normal LTE case LOG_I(MAC, "generate_Msg4 ra->Msg4_frame SFN/SF: %d.%d, frameP SFN/SF: %d.%d FOR eNB_Mod: %d \n", ra->Msg4_frame, ra->Msg4_subframe, frameP, subframeP, module_idP); if ((ra->Msg4_frame == frameP) && (ra->Msg4_subframe == subframeP)) { // Get RRCConnectionSetup for Piggyback /*rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH, 1, // 1 transport block &cc[CC_idP].CCCH_pdu.payload[0], ENB_FLAG_YES, module_idP, 0); // not used in this case*/ // check if there's data on the CCCH to send with Msg4 rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH, UE_RNTI(module_idP,UE_id),1, // 1 transport block &cc[CC_idP].CCCH_pdu.payload[0], 0); // not used in this case if (rrc_sdu_length > 0) { LOG_D(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: UE_id %d, rrc_sdu_length %d\n", module_idP, CC_idP, frameP, subframeP, UE_id, rrc_sdu_length); // AssertFatal(rrc_sdu_length > 0, // "[MAC][eNB Scheduler] CCCH not allocated, rrc_sdu_length: %d\n", rrc_sdu_length); LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating Msg4 with RRC Piggyback (RNTI %x)\n", module_idP, CC_idP, frameP, subframeP, ra->rnti); /// Choose first 4 RBs for Msg4, should really check that these are free! first_rb = 0; vrb_map[first_rb] = 1; vrb_map[first_rb + 1] = 1; vrb_map[first_rb + 2] = 1; vrb_map[first_rb + 3] = 1; // Compute MCS/TBS for 3 PRB (coded on 4 vrb) msg4_header = 1 + 6 + 1; // CR header, CR CE, SDU header if ((rrc_sdu_length + msg4_header) <= 22) { ra->msg4_mcs = 4; ra->msg4_TBsize = 22; } else if ((rrc_sdu_length + msg4_header) <= 28) { ra->msg4_mcs = 5; ra->msg4_TBsize = 28; } else if ((rrc_sdu_length + msg4_header) <= 32) { ra->msg4_mcs = 6; ra->msg4_TBsize = 32; } else if ((rrc_sdu_length + msg4_header) <= 41) { ra->msg4_mcs = 7; ra->msg4_TBsize = 41; } else if ((rrc_sdu_length + msg4_header) <= 49) { ra->msg4_mcs = 8; ra->msg4_TBsize = 49; } else if ((rrc_sdu_length + msg4_header) <= 57) { ra->msg4_mcs = 9; ra->msg4_TBsize = 57; } fill_nfapi_dl_dci_1A(dl_config_pdu, 4, // aggregation_level ra->rnti, // rnti 1, // rnti_type, CRNTI ra->harq_pid, // harq_process 1, // tpc, none getRIV(N_RB_DL, first_rb, 4), // resource_block_coding ra->msg4_mcs, // mcs 1 - UE_list->UE_template[CC_idP][UE_id].oldNDI[ra->harq_pid], 0, // rv 0); // vrb_flag UE_list->UE_template[CC_idP][UE_id].oldNDI[ra->harq_pid] = 1 - UE_list->UE_template[CC_idP][UE_id].oldNDI[ra->harq_pid]; LOG_D(MAC, "Frame %d, subframe %d: Msg4 DCI pdu_num %d (rnti %x,rnti_type %d,harq_pid %d, resource_block_coding (%p) %d\n", frameP, subframeP, dl_req_body->number_pdu, dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti, dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type, dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process, &dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding, dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding); AssertFatal(dl_config_pdu->dci_dl_pdu. dci_dl_pdu_rel8.resource_block_coding < 8192, "resource_block_coding %u < 8192\n", dl_config_pdu->dci_dl_pdu. dci_dl_pdu_rel8.resource_block_coding); if (!CCE_allocation_infeasible(module_idP, CC_idP, 1, subframeP, dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level, ra->rnti)) { dl_req_body->number_dci++; dl_req_body->number_pdu++; ra->state = WAITMSG4ACK; LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:WAITMSG4ACK\n", module_idP, frameP, subframeP); // increment Absolute subframe by 8 for Msg4 retransmission LOG_D(MAC, "Frame %d, Subframe %d: Preparing for Msg4 retransmission currently %d.%d\n", frameP, subframeP, ra->Msg4_frame, ra->Msg4_subframe); get_retransmission_timing(mac->common_channels[CC_idP].tdd_Config,&ra->Msg4_frame,&ra->Msg4_subframe); LOG_D(MAC, "Frame %d, Subframe %d: Msg4 retransmission in %d.%d\n", frameP, subframeP, ra->Msg4_frame, ra->Msg4_subframe); lcid = 0; // put HARQ process round to 0 ra->harq_pid = frame_subframe2_dl_harq_pid(cc->tdd_Config,frameP,subframeP); UE_list->UE_sched_ctrl[UE_id].round[CC_idP][ra->harq_pid] = 0; if ((ra->msg4_TBsize - rrc_sdu_length - msg4_header) <= 2) { msg4_padding = ra->msg4_TBsize - rrc_sdu_length - msg4_header; msg4_post_padding = 0; } else { msg4_padding = 0; msg4_post_padding = ra->msg4_TBsize - rrc_sdu_length - msg4_header - 1; } LOG_D(MAC, "[eNB %d][RAPROC] CC_idP %d Frame %d subframeP %d Msg4 : TBS %d, sdu_len %d, msg4_header %d, msg4_padding %d, msg4_post_padding %d\n", module_idP, CC_idP, frameP, subframeP, ra->msg4_TBsize, rrc_sdu_length, msg4_header, msg4_padding, msg4_post_padding); DevAssert(UE_id != UE_INDEX_INVALID); // FIXME not sure how to gracefully return // CHECK THIS: &cc[CC_idP].CCCH_pdu.payload[0] int num_sdus = rrc_sdu_length > 0 ? 1 : 0; offset = generate_dlsch_header((unsigned char *) mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], num_sdus, //num_sdus (unsigned short *) &rrc_sdu_length, // &lcid, // sdu_lcid 255, // no drx 31, // no timing advance ra->cont_res_id, // contention res id msg4_padding, // no padding msg4_post_padding); memcpy((void *) &mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0][(unsigned char)offset], &cc[CC_idP].CCCH_pdu.payload[0], rrc_sdu_length); // DLSCH Config fill_nfapi_dlsch_config(mac, dl_req_body, ra->msg4_TBsize, mac->pdu_index[CC_idP], ra->rnti, 2, // resource_allocation_type : format 1A/1B/1D 0, // virtual_resource_block_assignment_flag : localized getRIV(N_RB_DL, first_rb, 4), // resource_block_coding : RIV, 4 PRB 2, // modulation: QPSK 0, // redundancy version 1, // transport_blocks 0, // transport_block_to_codeword_swap_flag (0) (cc->p_eNB == 1) ? 0 : 1, // transmission_scheme 1, // number of layers 1, // number of subbands //0, // codebook index 1, // ue_category_capacity 4, // pa: 0 dB 0, // delta_power_offset_index 0, // ngap 1, // NPRB = 3 like in DCI (cc->p_eNB == 1) ? 1 : 2, // transmission mode 1, // num_bf_prb_per_subband 1); // num_bf_vector LOG_D(MAC, "Filled DLSCH config, pdu number %d, non-dci pdu_index %d\n", dl_req_body->number_pdu, mac->pdu_index[CC_idP]); // Tx request mac->TX_req[CC_idP].sfn_sf = fill_nfapi_tx_req(&mac->TX_req[CC_idP].tx_request_body, (frameP * 10) + subframeP, rrc_sdu_length+offset, mac->pdu_index[CC_idP], mac->UE_list. DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0]); mac->pdu_index[CC_idP]++; dl_req->sfn_sf = mac->TX_req[CC_idP].sfn_sf; LOG_D(MAC, "Filling UCI ACK/NAK information, cce_idx %d\n", dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx); // Program PUCCH1a for ACK/NAK // Program ACK/NAK for Msg4 PDSCH fill_nfapi_uci_acknak(module_idP, CC_idP, ra->rnti, (frameP * 10) + subframeP, dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx); T(T_ENB_MAC_UE_DL_PDU_WITH_DATA, T_INT(module_idP), T_INT(CC_idP), T_INT(ra->rnti), T_INT(frameP), T_INT(subframeP), T_INT(0 /*harq_pid always 0? */ ), T_BUFFER(&mac->UE_list.DLSCH_pdu[CC_idP][0][UE_id]. payload[0], ra->msg4_TBsize)); trace_pdu(DIRECTION_DOWNLINK, (uint8_t *) mac-> UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0], rrc_sdu_length, UE_id, WS_C_RNTI, UE_RNTI(module_idP, UE_id), mac->frame, mac->subframe, 0, 0); if(RC.mac[module_idP]->scheduler_mode == SCHED_MODE_FAIR_RR) { set_dl_ue_select_msg4(CC_idP, 4, UE_id, ra->rnti); } } // CCE Allocation feasible } else { LOG_I(MAC, "eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Delaying Msg4 for RRC Piggyback (RNTI %x)\n", module_idP, CC_idP, frameP, subframeP, ra->rnti); ra->Msg4_subframe ++; ra->Msg4_delay_cnt++; if (ra->Msg4_delay_cnt==10) cancel_ra_proc(module_idP, CC_idP, frameP, ra->rnti); if (ra->Msg4_subframe == 10) { ra->Msg4_frame++; ra->Msg4_frame&=1023; ra->Msg4_subframe = 0; } } } // msg4 frame/subframe } // else rach_resource_type } void check_Msg4_retransmission(module_id_t module_idP, int CC_idP, frame_t frameP, sub_frame_t subframeP, RA_t *ra) { eNB_MAC_INST *mac = RC.mac[module_idP]; COMMON_channels_t *cc = mac->common_channels; int UE_id = -1; uint8_t *vrb_map; int first_rb; int N_RB_DL; nfapi_dl_config_request_pdu_t *dl_config_pdu; UE_list_t *UE_list = &mac->UE_list; nfapi_dl_config_request_t *dl_req; nfapi_dl_config_request_body_t *dl_req_body; int round; // check HARQ status and retransmit if necessary UE_id = find_UE_id(module_idP, ra->rnti); AssertFatal(UE_id >= 0, "Can't find UE for t-crnti\n"); round = UE_list->UE_sched_ctrl[UE_id].round[CC_idP][ra->harq_pid]; vrb_map = cc[CC_idP].vrb_map; dl_req = &mac->DL_req[CC_idP]; dl_req_body = &dl_req->dl_config_request_body; dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu]; N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth); LOG_D(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Checking if Msg4 for harq_pid %d was acknowledged (round %d), UE_id: %d \n", module_idP, CC_idP, frameP, subframeP, ra->harq_pid, round, UE_id); if (round != 8) { if (ra->rach_resource_type > 0 && round > 0) { AssertFatal(1 == 0, "Msg4 Retransmissions not handled yet for BL/CE UEs, Frame %d, subframeP %d harq_pid %d round %d, UE_id: %d \n", frameP, subframeP, ra->harq_pid, round, UE_id); } else { if ((ra->Msg4_frame == frameP) && (ra->Msg4_subframe == subframeP)) { //ra->wait_ack_Msg4++; // we have to schedule a retransmission dl_req->sfn_sf = frameP<<4 | subframeP; first_rb = 0; vrb_map[first_rb] = 1; vrb_map[first_rb + 1] = 1; vrb_map[first_rb + 2] = 1; vrb_map[first_rb + 3] = 1; fill_nfapi_dl_dci_1A(dl_config_pdu, 4, // aggregation_level ra->rnti, // rnti 1, // rnti_type, CRNTI ra->harq_pid, // harq_process 1, // tpc, none getRIV(N_RB_DL, first_rb, 4), // resource_block_coding ra->msg4_mcs, // mcs UE_list->UE_template[CC_idP][UE_id].oldNDI[ra->harq_pid], round & 3, // rv 0); // vrb_flag if (!CCE_allocation_infeasible (module_idP, CC_idP, 1, subframeP, dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8. aggregation_level, ra->rnti)) { dl_req_body->number_dci++; dl_req_body->number_pdu++; dl_req_body->tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG; LOG_D(MAC, "msg4 retransmission for rnti %x (round %d) fsf %d/%d\n", ra->rnti, round, frameP, subframeP); // DLSCH Config //DJP - fix this pdu_index = -1 LOG_D(MAC, "check_Msg4_retransmission() before fill_nfapi_dlsch_config() with pdu_index = -1 \n"); fill_nfapi_dlsch_config(mac, dl_req_body, ra->msg4_TBsize, -1 /* retransmission, no pdu_index */ , ra->rnti, 2, // resource_allocation_type : format 1A/1B/1D 0, // virtual_resource_block_assignment_flag : localized getRIV(N_RB_DL, first_rb, 4), // resource_block_coding : RIV, 4 PRB 2, // modulation: QPSK round & 3, // redundancy version 1, // transport_blocks 0, // transport_block_to_codeword_swap_flag (0) (cc->p_eNB == 1) ? 0 : 1, // transmission_scheme 1, // number of layers 1, // number of subbands //0, // codebook index 1, // ue_category_capacity 4, // pa: 0 dB 0, // delta_power_offset_index 0, // ngap 1, // NPRB = 3 like in DCI (cc->p_eNB == 1) ? 1 : 2, // transmission mode 1, // num_bf_prb_per_subband 1); // num_bf_vector if(RC.mac[module_idP]->scheduler_mode == SCHED_MODE_FAIR_RR) { set_dl_ue_select_msg4(CC_idP, 4, UE_id, ra->rnti); } } else LOG_D(MAC, "msg4 retransmission for rnti %x (round %d) fsf %d/%d CCE allocation failed!\n", ra->rnti, round, frameP, subframeP); // Program PUCCH1a for ACK/NAK fill_nfapi_uci_acknak(module_idP, CC_idP, ra->rnti, (frameP * 10) + subframeP, dl_config_pdu->dci_dl_pdu. dci_dl_pdu_rel8.cce_idx); // prepare frame for retransmission get_retransmission_timing(mac->common_channels[CC_idP].tdd_Config,&ra->Msg4_frame,&ra->Msg4_subframe); LOG_W(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Msg4 not acknowledged, adding ue specific dci (rnti %x) for RA (Msg4 Retransmission round %d in %d.%d)\n", module_idP, CC_idP, frameP, subframeP, ra->rnti, round, ra->Msg4_frame, ra->Msg4_subframe); } // Msg4 frame/subframe } // regular LTE case } else { LOG_D(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d : Msg4 acknowledged\n", module_idP, CC_idP, frameP, subframeP); ra->state = IDLE; LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:IDLE\n", module_idP, frameP, subframeP); UE_id = find_UE_id(module_idP, ra->rnti); DevAssert(UE_id != -1); mac->UE_list.UE_template[UE_PCCID(module_idP, UE_id)][UE_id].configured = TRUE; mac->UE_list.UE_template[UE_PCCID(module_idP, UE_id)][UE_id].pusch_repetition_levels=ra->pusch_repetition_levels; cancel_ra_proc(module_idP, CC_idP, frameP, ra->rnti); } } void schedule_RA(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP) { int CC_id; eNB_MAC_INST *mac = RC.mac[module_idP]; COMMON_channels_t *cc = mac->common_channels; RA_t *ra; uint8_t i; start_meas(&mac->schedule_ra); for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) { // skip UL component carriers if TDD if (is_UL_sf(&cc[CC_id], subframeP) == 1) continue; for (i = 0; i < NB_RA_PROC_MAX; i++) { ra = (RA_t *) & cc[CC_id].ra[i]; if (ra->state == MSG2) generate_Msg2(module_idP, CC_id, frameP, subframeP, ra); else if (ra->state == MSG4 && ra->Msg4_frame == frameP && ra->Msg4_subframe == subframeP ) generate_Msg4(module_idP, CC_id, frameP, subframeP, ra); else if (ra->state == WAITMSG4ACK) check_Msg4_retransmission(module_idP, CC_id, frameP, subframeP, ra); } // for i=0 .. N_RA_PROC-1 } // CC_id stop_meas(&mac->schedule_ra); } // handles the event of MSG1 reception void initiate_ra_proc(module_id_t module_idP, int CC_id, frame_t frameP, sub_frame_t subframeP, uint16_t preamble_index, int16_t timing_offset, uint16_t ra_rnti, uint8_t rach_resource_type ) { uint8_t i; COMMON_channels_t *cc = &RC.mac[module_idP]->common_channels[CC_id]; RA_t *ra = &cc->ra[0]; struct LTE_PRACH_ConfigSIB_v1310 *ext4_prach = NULL; LTE_PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13 = NULL; if (cc->mib->message.schedulingInfoSIB1_BR_r13>0) { AssertFatal(cc->radioResourceConfigCommon_BR != NULL,"radioResourceConfigCommon_BR is null\n"); AssertFatal(cc->radioResourceConfigCommon_BR->ext4 != NULL, "radioResourceConfigCommon_BR->ext4 is null\n"); ext4_prach = cc->radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310; AssertFatal(ext4_prach!=NULL,"ext4_prach is null\n"); prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13; } LOG_D(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, Subframe %d Initiating RA procedure for preamble index %d\n", module_idP, CC_id, frameP, subframeP, preamble_index); LOG_D(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, Subframe %d PRACH resource type %d\n", module_idP, CC_id, frameP, subframeP, rach_resource_type); uint16_t msg2_frame = frameP; uint16_t msg2_subframe = subframeP; int offset; static uint8_t failure_cnt = 0 ; if (prach_ParametersListCE_r13 && prach_ParametersListCE_r13->list.count < rach_resource_type) { LOG_E(MAC, "[eNB %d][RAPROC] CC_id %d Received impossible PRACH resource type %d, only %d CE levels configured\n", module_idP, CC_id, rach_resource_type, (int) prach_ParametersListCE_r13->list.count); return; } VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC, 1); VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC, 0); for (i = 0; i < NB_RA_PROC_MAX; i++) { if (ra[i].state == IDLE) { int loop = 0; LOG_D(MAC, "Frame %d, Subframe %d: Activating RA process %d\n", frameP, subframeP, i); ra[i].state = MSG2; ra[i].Msg4_delay_cnt=0; ra[i].timing_offset = timing_offset; ra[i].preamble_subframe = subframeP; ra[i].rach_resource_type = rach_resource_type; ra[i].msg2_mpdcch_repetition_cnt = 0; ra[i].msg4_mpdcch_repetition_cnt = 0; //TODO Fill in other TDD config. What about nfapi_mode? if(cc->tdd_Config!=NULL) { switch(cc->tdd_Config->subframeAssignment) { default: printf("%s:%d: TODO\n", __FILE__, __LINE__); abort(); case 1 : offset = 6; break; } } else { //FDD // DJP - this is because VNF is 2 subframes ahead of PNF and TX needs 4 subframes if (NFAPI_MODE != NFAPI_MONOLITHIC) offset = 7; else offset = 5; } add_subframe(&msg2_frame, &msg2_subframe, offset); ra[i].Msg2_frame = msg2_frame; ra[i].Msg2_subframe = msg2_subframe; LOG_D(MAC,"%s() Msg2[%04d%d] SFN/SF:%04d%d offset:%d\n", __FUNCTION__,ra[i].Msg2_frame,ra[i].Msg2_subframe,frameP,subframeP,offset); ra[i].Msg2_subframe = (subframeP + offset) % 10; /* TODO: find better procedure to allocate RNTI */ do { if (IS_SOFTMODEM_IQPLAYER) { /* iq player mode, use deterministic rnti */ static int drnti[MAX_MOBILES_PER_ENB]; static int drnti_def[]={ 0xbda7, 0x71da, 0x9c40, 0xc350, 0x2710, 0x4e20, 0x7530, 0x1388, 0x3a98, 0x61a8, 0x88b8, 0xafc8, 0xd6d8, 0x1b58, 0x4268, 0x6978 }; for (int j=0; j 0) { nb_ue++; } else { break; } } if (nb_ue >= MAX_MOBILES_PER_ENB || nb_ue >= (sizeof(drnti_def)/sizeof(int))) { printf("No more free RNTI available, increase MAX_MOBILES_PER_ENB\n"); abort(); } ra[i].rnti = drnti[nb_ue]; } else { ra[i].rnti = taus(); } loop++; } while (loop != 100 && /* TODO: this is not correct, the rnti may be in use without * being in the MAC yet. To be refined. */ !(find_UE_id(module_idP, ra[i].rnti) == -1 && /* 1024 and 60000 arbirarily chosen, not coming from standard */ ra[i].rnti >= 1024 && ra[i].rnti < 60000)); if (loop == 100) { printf("%s:%d:%s: FATAL ERROR! contact the authors\n", __FILE__, __LINE__, __FUNCTION__); abort(); } ra[i].RA_rnti = ra_rnti; ra[i].preamble_index = preamble_index; failure_cnt = 0; LOG_D(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d Activating RAR generation in Frame %d, subframe %d for process %d, rnti %x, state %d\n", module_idP, CC_id, frameP, ra[i].Msg2_frame, ra[i].Msg2_subframe, i, ra[i].rnti, ra[i].state); return; } } LOG_E(MAC, "[eNB %d][RAPROC] FAILURE: CC_id %d Frame %d Initiating RA procedure for preamble index %d\n", module_idP, CC_id, frameP, preamble_index); failure_cnt++; if(failure_cnt > 20) { LOG_E(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Clear Random access information\n", module_idP, CC_id, frameP); clear_ra_proc(module_idP, CC_id, frameP); } } void cancel_ra_proc(module_id_t module_idP, int CC_id, frame_t frameP, rnti_t rnti) { unsigned char i; RA_t *ra = (RA_t *) & RC.mac[module_idP]->common_channels[CC_id].ra[0]; MSC_LOG_EVENT(MSC_PHY_ENB, "RA Cancelling procedure ue %" PRIx16 " ", rnti); LOG_D(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d Cancelling RA procedure for UE rnti %x\n", module_idP, CC_id, frameP, rnti); for (i = 0; i < NB_RA_PROC_MAX; i++) { if (rnti == ra[i].rnti) { ra[i].state = IDLE; ra[i].timing_offset = 0; ra[i].RRC_timer = 20; ra[i].rnti = 0; ra[i].msg3_round = 0; LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Canceled RA procedure for UE rnti %x\n", module_idP, CC_id, frameP, rnti); } } } void clear_ra_proc(module_id_t module_idP, int CC_id, frame_t frameP) { unsigned char i; RA_t *ra = (RA_t *) & RC.mac[module_idP]->common_channels[CC_id].ra[0]; for (i = 0; i < NB_RA_PROC_MAX; i++) { LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Clear Random access information rnti %x\n", module_idP, CC_id, frameP, ra[i].rnti); ra[i].state = IDLE; ra[i].timing_offset = 0; ra[i].RRC_timer = 20; ra[i].rnti = 0; ra[i].msg3_round = 0; } }