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openairinterface5g/openair2/LAYER2/MAC/eNB_scheduler_RA.c
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/*
* 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
*/
#include "assertions.h"
#include "platform_types.h"
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "msc.h"
#include "SCHED/defs.h"
#include "SCHED/extern.h"
#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/extern.h"
#include "LAYER2/MAC/proto.h"
#include "UTIL/LOG/log.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "RRC/LITE/extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
//#include "LAYER2/MAC/pre_processor.c"
#include "pdcp.h"
#if defined(ENABLE_ITTI)
#include "intertask_interface.h"
#endif
#include "SIMULATION/TOOLS/defs.h" // for taus
#include "T.h"
void
add_msg3 (module_id_t module_idP, int CC_id, RA_TEMPLATE * RA_template, frame_t frameP, sub_frame_t subframeP)
{
eNB_MAC_INST *eNB = RC.mac[module_idP];
COMMON_channels_t *cc = &eNB->common_channels[CC_id];
uint8_t j;
nfapi_ul_config_request_t *ul_req;
nfapi_ul_config_request_pdu_t *ul_config_pdu;
nfapi_ul_config_request_body_t *ul_req_body;
nfapi_hi_dci0_request_body_t *hi_dci0_req;
nfapi_hi_dci0_request_pdu_t *hi_dci0_pdu;
uint8_t rvseq[4] = { 0, 2, 3, 1 };
hi_dci0_req = &eNB->HI_DCI0_req[CC_id].hi_dci0_request_body;
ul_req = &eNB->UL_req_tmp[CC_id][RA_template->Msg3_subframe];
ul_req_body = &ul_req->ul_config_request_body;
AssertFatal (RA_template->RA_active == TRUE, "RA is not active for RA %X\n", RA_template->rnti);
#ifdef Rel14
if (RA_template->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_template->rach_resource_type - 1, RA_template->Msg3_frame, RA_template->Msg3_subframe);
LOG_D (MAC, "Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d)\n",
frameP, subframeP, RA_template->Msg3_frame, RA_template->Msg3_subframe, RA_template->msg3_nb_rb, RA_template->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 = eNB->ul_handle++;
ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti = RA_template->rnti;
ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start = narrowband_to_first_rb (cc, RA_template->msg34_narrowband) + RA_template->msg3_first_rb;
ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks = RA_template->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_template->msg3_round];
ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number = ((10 * RA_template->Msg3_frame) + RA_template->Msg3_subframe) & 7;
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_template->msg3_mcs, RA_template->msg3_nb_rb);
// Re13 fields
ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.ue_type = RA_template->rach_resource_type > 2 ? 2 : 1;
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_template->Msg3_frame * 10) + RA_template->Msg3_subframe;
ul_req_body->number_of_pdus++;
} // if (RA_template->rach_resource_type>0) {
else
#endif
{
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_template->Msg3_frame, RA_template->Msg3_subframe);
LOG_D (MAC, "Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d,%d)\n",
frameP, subframeP, RA_template->Msg3_frame, RA_template->Msg3_subframe, RA_template->msg3_nb_rb, RA_template->msg3_first_rb, RA_template->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 = eNB->ul_handle++;
ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti = RA_template->rnti;
ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start = RA_template->msg3_first_rb;
AssertFatal (RA_template->msg3_nb_rb > 0, "nb_rb = 0\n");
ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks = RA_template->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_template->msg3_round];
ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number = subframe2harqpid (cc, RA_template->Msg3_frame, RA_template->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_template->msg3_nb_rb);
ul_req_body->number_of_pdus++;
// save UL scheduling information for preprocessor
for (j = 0; j < RA_template->msg3_nb_rb; j++)
cc->vrb_map_UL[RA_template->msg3_first_rb + j] = 1;
if (RA_template->msg3_round != 0) { // program HI too
hi_dci0_pdu = &hi_dci0_req->hi_dci0_pdu_list[hi_dci0_req->number_of_dci + hi_dci0_req->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.resource_block_start = RA_template->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->number_of_hi++;
// save UL scheduling information for preprocessor
for (j = 0; j < RA_template->msg3_nb_rb; j++)
cc->vrb_map_UL[RA_template->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_template->rnti, CC_id, frameP, subframeP, 10, 1, 1, RA_template->msg3_round - 1);
} // if (RA_template->msg3_round != 0) { // program HI too
} // non-BL/CE UE case
}
void
generate_Msg2 (module_id_t module_idP, int CC_idP, frame_t frameP, sub_frame_t subframeP, RA_TEMPLATE * RA_template)
{
eNB_MAC_INST *eNB = RC.mac[module_idP];
COMMON_channels_t *cc = eNB->common_channels;
uint8_t *vrb_map;
int first_rb;
int N_RB_DL;
nfapi_dl_config_request_pdu_t *dl_config_pdu;
nfapi_tx_request_pdu_t *TX_req;
nfapi_dl_config_request_body_t *dl_req;
vrb_map = cc[CC_idP].vrb_map;
dl_req = &eNB->DL_req[CC_idP].dl_config_request_body;
dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu];
N_RB_DL = to_prb (cc[CC_idP].mib->message.dl_Bandwidth);
#ifdef Rel14
int rmax = 0;
int rep = 0;
int reps = 0;
int num_nb = 0;
first_rb = 0;
struct PRACH_ConfigSIB_v1310 *ext4_prach;
PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
PRACH_ParametersCE_r13_t *p[4] = { NULL, NULL, NULL, NULL };
uint16_t absSF = (10 * frameP) + subframeP;
uint16_t absSF_Msg2 = (10 * RA_template->Msg2_frame) + RA_template->Msg2_subframe;
if (absSF > absSF_Msg2)
return; // we're not ready yet, need to be to start ==
if (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_template->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");
rmax = 1 << p[RA_template->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_template->rach_resource_type - 1]->mpdcch_NarrowbandsToMonitor_r13.list.count;
RA_template->msg2_narrowband = *p[RA_template->rach_resource_type - 1]->mpdcch_NarrowbandsToMonitor_r13.list.array[RA_template->preamble_index % num_nb];
first_rb = narrowband_to_first_rb (&cc[CC_idP], RA_template->msg2_narrowband);
if ((RA_template->msg2_mpdcch_repetition_cnt == 0) && (mpdcch_sf_condition (eNB, CC_idP, frameP, subframeP, rmax, TYPE2, -1) > 0)) {
// MPDCCH configuration for RAR
LOG_I (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_template->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_template->rach_resource_type > 1) ? 11 : 10;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band = RA_template->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_id].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 = 2; // RA-RNTI
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = RA_template->RA_rnti;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode = (RA_template->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_template->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 = 4; // 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); => 208 bits for mcs=4, choose mcs according t message size TBD
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_template->msg2_mpdcch_repetition_cnt++;
dl_req->number_pdu++;
RA_template->Msg2_subframe = (RA_template->Msg2_subframe + 9) % 10;
} //repetition_count==0 && SF condition met
if (RA_template->msg2_mpdcch_repetition_cnt > 0) { // we're in a stream of repetitions
if (RA_template->msg2_mpdcch_repetition_cnt == reps) { // this is the last mpdcch repetition
if (cc[CC_idP].tdd_Config == NULL) { // FDD case
// wait 2 subframes for PDSCH transmission
if (subframeP > 7)
RA_template->Msg2_frame = (frameP + 1) & 1023;
else
RA_template->Msg2_frame = frameP;
RA_template->Msg2_subframe = (subframeP + 2) % 10; // +2 is the "n+x" from Section 7.1.11 in 36.213
LOG_I(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, programmed Msg2 for %d.%d\n", module_idP, frameP, subframeP, RA_template->Msg2_frame,RA_template->Msg2_subframe);
} else {
AssertFatal (1 == 0, "TDD case not done yet\n");
}
} // mpdcch_repetition_count == reps
else {
LOG_I (MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, MPDCCH repetition %d\n", module_idP, frameP, subframeP, RA_template->msg2_mpdcch_repetition_cnt);
RA_template->msg2_mpdcch_repetition_cnt++;
}
if ((RA_template->Msg2_frame == frameP) && (RA_template->Msg2_subframe == subframeP)) {
// Program PDSCH
LOG_I (MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming PDSCH %d\n", module_idP, frameP, subframeP);
RA_template->generate_rar = 0;
dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->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 = eNB->pdu_index[CC_idP];
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = RA_template->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->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 = ;
// 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_template->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->number_pdu++;
// Program UL processing for Msg3, same as regular LTE
get_Msg3alloc (&cc[CC_idP], subframeP, frameP, &RA_template->Msg3_frame, &RA_template->Msg3_subframe);
add_msg3 (module_idP, CC_idP, RA_template, frameP, subframeP);
fill_rar_br (eNB, CC_idP, RA_template, frameP, subframeP, cc[CC_idP].RAR_pdu.payload, RA_template->rach_resource_type - 1);
// DL request
eNB->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
TX_req = &eNB->TX_req[CC_idP].tx_request_body.tx_pdu_list[eNB->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 = eNB->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;
eNB->TX_req[CC_idP].tx_request_body.number_of_pdus++;
}
}
} else
#endif
{
if ((RA_template->Msg2_frame == frameP) && (RA_template->Msg2_subframe == subframeP)) {
LOG_I (MAC, "[eNB %d] CC_id %d Frame %d, subframeP %d: Generating RAR DCI, RA_active %d format 1A (%d,%d))\n",
module_idP, CC_idP, frameP, subframeP, RA_template->RA_active, RA_template->RA_dci_fmt1, RA_template->RA_dci_size_bits1);
// 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.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_template->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_template->RA_rnti)) {
LOG_D (MAC, "Frame %d: Subframe %d : Adding common DCI for RA_RNTI %x\n", frameP, subframeP, RA_template->RA_rnti);
dl_req->number_dci++;
dl_req->number_pdu++;
dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->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 = eNB->pdu_index[CC_idP];
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = RA_template->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->number_pdu++;
// Program UL processing for Msg3
get_Msg3alloc (&cc[CC_idP], subframeP, frameP, &RA_template->Msg3_frame, &RA_template->Msg3_subframe);
LOG_D (MAC, "Frame %d, Subframe %d: Setting Msg3 reception for Frame %d Subframe %d\n", frameP, subframeP, RA_template->Msg3_frame, RA_template->Msg3_subframe);
fill_rar (module_idP, CC_idP, frameP, cc[CC_idP].RAR_pdu.payload, N_RB_DL, 7);
add_msg3 (module_idP, CC_idP, RA_template, frameP, subframeP);
// DL request
eNB->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
TX_req = &eNB->TX_req[CC_idP].tx_request_body.tx_pdu_list[eNB->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 = eNB->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;
eNB->TX_req[CC_idP].tx_request_body.number_of_pdus++;
} // PDCCH CCE allocation is feasible
} // Msg2 frame/subframe condition
} // else BL/CE
}
void
generate_Msg4 (module_id_t module_idP, int CC_idP, frame_t frameP, sub_frame_t subframeP, RA_TEMPLATE * RA_template)
{
eNB_MAC_INST *eNB = RC.mac[module_idP];
COMMON_channels_t *cc = eNB->common_channels;
int16_t rrc_sdu_length;
int UE_id = -1;
uint16_t msg4_padding;
uint16_t msg4_post_padding;
uint16_t msg4_header;
uint8_t *vrb_map;
int first_rb;
int N_RB_DL;
nfapi_dl_config_request_pdu_t *dl_config_pdu;
nfapi_ul_config_request_pdu_t *ul_config_pdu;
nfapi_tx_request_pdu_t *TX_req;
UE_list_t *UE_list = &eNB->UE_list;
nfapi_dl_config_request_body_t *dl_req;
nfapi_ul_config_request_body_t *ul_req;
uint8_t lcid;
uint8_t offset;
#ifdef Rel14
int rmax = 0;
int rep = 0;
int reps = 0;
first_rb = 0;
struct PRACH_ConfigSIB_v1310 *ext4_prach;
struct PUCCH_ConfigCommon_v1310 *ext4_pucch;
PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
struct N1PUCCH_AN_InfoList_r13 *pucch_N1PUCCH_AN_InfoList_r13;
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].radioResourceConfigCommon_BR) {
ext4_prach = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
ext4_pucch = cc[CC_idP].radioResourceConfigCommon_BR->ext4->pucch_ConfigCommon_v1310;
prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;
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_Level2_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_Level2_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level0 shouldn't be NULL\n");
pucchreps[0] = (int) (1 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level0_r13);
default:
AssertFatal (1 == 0, "Illegal count for prach_ParametersListCE_r13 %d\n", prach_ParametersListCE_r13->list.count);
}
}
#endif
vrb_map = cc[CC_idP].vrb_map;
dl_req = &eNB->DL_req[CC_idP].dl_config_request_body;
dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu];
N_RB_DL = to_prb (cc[CC_idP].mib->message.dl_Bandwidth);
UE_id = find_UE_id (module_idP, RA_template->rnti);
AssertFatal (UE_id >= 0, "Can't find UE for t-crnti\n");
// set HARQ process round to 0 for this UE
if (cc->tdd_Config)
RA_template->harq_pid = ((frameP * 10) + subframeP) % 10;
else
RA_template->harq_pid = ((frameP * 10) + subframeP) & 7;
// 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
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);
#ifdef Rel14
if (RA_template->rach_resource_type > 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 = p[RA_template->rach_resource_type - 1]->mpdcch_NumRepetition_RA_r13;
AssertFatal (rmax >= 4, "choose rmax>=4 for enough repeititions, or reduce rep to 1 or 2\n");
// 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 = 2;
// 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_template->msg34_narrowband);
if ((RA_template->msg4_mpdcch_repetition_cnt == 0) && (mpdcch_sf_condition (eNB, CC_idP, frameP, subframeP, rmax, TYPE2, -1) > 0)) {
// MPDCCH configuration for RAR
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_template->rach_resource_type > 1) ? 11 : 10;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band = RA_template->msg34_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;
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-C-RNTI
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = RA_template->RA_rnti;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode = (RA_template->rach_resource_type < 3) ? 1 : 2;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init = cc[CC_idP].physCellId; /// Check this is still N_id_cell for type2 common
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); // check if not getRIV(N_RB_DL,first_rb,6);
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs = 4; // adjust according to size of Msg4, 208 bits with N1A_PRB=3
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels = 4; // 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 = RA_template->harq_pid;
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; => 208 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_template->msg4_mpdcch_repetition_cnt++;
dl_req->number_pdu++;
} //repetition_count==0 && SF condition met
else if (RA_template->msg4_mpdcch_repetition_cnt > 0) { // we're in a stream of repetitions
RA_template->msg4_mpdcch_repetition_cnt++;
if (RA_template->msg4_mpdcch_repetition_cnt == reps) { // this is the last mpdcch repetition
if (cc[CC_idP].tdd_Config == NULL) { // FDD case
// wait 2 subframes for PDSCH transmission
if (subframeP > 7)
RA_template->Msg4_frame = (frameP + 1) & 1023;
else
RA_template->Msg4_frame = frameP;
RA_template->Msg4_subframe = (subframeP + 2) % 10;
} else {
AssertFatal (1 == 0, "TDD case not done yet\n");
}
} // mpdcch_repetition_count == reps
if ((RA_template->Msg4_frame == frameP) && (RA_template->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_template->rach_resource_type - 1, RA_template->rnti);
AssertFatal (1 == 0, "Msg4 generation not finished for BL/CE UE\n");
dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->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 = eNB->pdu_index[CC_idP];
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = RA_template->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->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_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_template->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->number_pdu++;
RA_template->generate_Msg4 = 0;
RA_template->wait_ack_Msg4 = 1;
lcid = 0;
UE_list->UE_sched_ctrl[UE_id].round[CC_idP][RA_template->harq_pid] = 0;
msg4_header = 1 + 6 + 1; // CR header, CR CE, SDU header
if ((RA_template->msg4_TBsize - rrc_sdu_length - msg4_header) <= 2) {
msg4_padding = RA_template->msg4_TBsize - rrc_sdu_length - msg4_header;
msg4_post_padding = 0;
} else {
msg4_padding = 0;
msg4_post_padding = RA_template->msg4_TBsize - 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_template->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]
offset = generate_dlsch_header ((unsigned char *) eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], 1, //num_sdus
(unsigned short *) &rrc_sdu_length, //
&lcid, // sdu_lcid
255, // no drx
31, // no timing advance
RA_template->cont_res_id, // contention res id
msg4_padding, // no padding
msg4_post_padding);
memcpy ((void *) &eNB->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);
// DL request
eNB->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
TX_req = &eNB->TX_req[CC_idP].tx_request_body.tx_pdu_list[eNB->TX_req[CC_idP].tx_request_body.number_of_pdus];
TX_req->pdu_length = rrc_sdu_length;
TX_req->pdu_index = eNB->pdu_index[CC_idP]++;
TX_req->num_segments = 1;
TX_req->segments[0].segment_length = rrc_sdu_length;
TX_req->segments[0].segment_data = eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0];
eNB->TX_req[CC_idP].tx_request_body.number_of_pdus++;
// Program ACK/NAK for Msg4 PDSCH
int absSF = (RA_template->Msg3_frame * 10) + RA_template->Msg3_subframe;
// see Section 10.2 from 36.213
int ackNAK_absSF = absSF + reps + 4;
AssertFatal (reps > 2, "Have to handle programming of ACK when PDSCH repetitions is > 2\n");
ul_req = &eNB->UL_req_tmp[CC_idP][ackNAK_absSF % 10].ul_config_request_body;
ul_config_pdu = &ul_req->ul_config_pdu_list[ul_req->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.handle = 0; // don't know how to use this
ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.rnti = RA_template->rnti;
ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.ue_type = (RA_template->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_template->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_rel8_fdd.n_pucch_1_0 = n1pucchan[RA_template->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_rel8_fdd.harq_size = 1; // 1-bit ACK/NAK
} else {
AssertFatal (1 == 0, "PUCCH configuration for ACK/NAK not handled yet for TDD BL/CE case\n");
}
ul_req->number_of_pdus++;
T (T_ENB_MAC_UE_DL_PDU_WITH_DATA, T_INT (module_idP), T_INT (CC_idP), T_INT (RA_template->rnti), T_INT (frameP), T_INT (subframeP),
T_INT (0 /*harq_pid always 0? */ ), T_BUFFER (&eNB->UE_list.DLSCH_pdu[CC_idP][0][UE_id].payload[0], RA_template->msg4_TBsize));
if (opt_enabled == 1) {
trace_pdu (1, (uint8_t *) eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], rrc_sdu_length, UE_id, 3, UE_RNTI (module_idP, UE_id), eNB->frame, eNB->subframe, 0, 0);
LOG_D (OPT, "[eNB %d][DLSCH] CC_id %d Frame %d trace pdu for rnti %x with size %d\n", module_idP, CC_idP, frameP, UE_RNTI (module_idP, UE_id), rrc_sdu_length);
}
} // Msg4 frame/subframe
} // msg4_mpdcch_repetition_count
} // rach_resource_type > 0
else
#endif
{ // This is normal LTE case
if ((RA_template->Msg4_frame == frameP) && (RA_template->Msg4_subframe == subframeP)) {
LOG_D (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_template->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_template->msg4_mcs = 4;
RA_template->msg4_TBsize = 22;
} else if ((rrc_sdu_length + msg4_header) <= 28) {
RA_template->msg4_mcs = 5;
RA_template->msg4_TBsize = 28;
} else if ((rrc_sdu_length + msg4_header) <= 32) {
RA_template->msg4_mcs = 6;
RA_template->msg4_TBsize = 32;
} else if ((rrc_sdu_length + msg4_header) <= 41) {
RA_template->msg4_mcs = 7;
RA_template->msg4_TBsize = 41;
} else if ((rrc_sdu_length + msg4_header) <= 49) {
RA_template->msg4_mcs = 8;
RA_template->msg4_TBsize = 49;
} else if ((rrc_sdu_length + msg4_header) <= 57) {
RA_template->msg4_mcs = 9;
RA_template->msg4_TBsize = 57;
}
fill_nfapi_dl_dci_1A (dl_config_pdu, 4, // aggregation_level
RA_template->rnti, // rnti
1, // rnti_type, CRNTI
RA_template->harq_pid, // harq_process
1, // tpc, none
getRIV (N_RB_DL, first_rb, 4), // resource_block_coding
RA_template->msg4_mcs, // mcs
1, // ndi
0, // rv
0); // vrb_flag
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->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_template->rnti)) {
dl_req->number_dci++;
dl_req->number_pdu++;
RA_template->generate_Msg4 = 0;
RA_template->wait_ack_Msg4 = 1;
// 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_template->Msg4_frame, RA_template->Msg4_subframe);
if (RA_template->Msg4_subframe > 1)
RA_template->Msg4_frame++;
RA_template->Msg4_frame &= 1023;
RA_template->Msg4_subframe = (RA_template->Msg4_subframe + 8) % 10;
LOG_D (MAC, "Frame %d, Subframe %d: Msg4 retransmission in %d.%d\n", frameP, subframeP, RA_template->Msg4_frame, RA_template->Msg4_subframe);
lcid = 0;
// put HARQ process round to 0
if (cc->tdd_Config)
RA_template->harq_pid = ((frameP * 10) + subframeP) % 10;
else
RA_template->harq_pid = ((frameP * 10) + subframeP) & 7;
UE_list->UE_sched_ctrl[UE_id].round[CC_idP][RA_template->harq_pid] = 0;
if ((RA_template->msg4_TBsize - rrc_sdu_length - msg4_header) <= 2) {
msg4_padding = RA_template->msg4_TBsize - rrc_sdu_length - msg4_header;
msg4_post_padding = 0;
} else {
msg4_padding = 0;
msg4_post_padding = RA_template->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_template->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]
offset = generate_dlsch_header ((unsigned char *) eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], 1, //num_sdus
(unsigned short *) &rrc_sdu_length, //
&lcid, // sdu_lcid
255, // no drx
31, // no timing advance
RA_template->cont_res_id, // contention res id
msg4_padding, // no padding
msg4_post_padding);
memcpy ((void *) &eNB->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 (eNB, dl_req, RA_template->msg4_TBsize, eNB->pdu_index[CC_idP], RA_template->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->number_pdu, eNB->pdu_index[CC_idP]);
// DL request
eNB->TX_req[CC_idP].sfn_sf = fill_nfapi_tx_req (&eNB->TX_req[CC_idP].tx_request_body,
(frameP * 10) + subframeP, rrc_sdu_length, eNB->pdu_index[CC_idP], eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0]);
eNB->pdu_index[CC_idP]++;
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_template->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_template->rnti), T_INT (frameP), T_INT (subframeP),
T_INT (0 /*harq_pid always 0? */ ), T_BUFFER (&eNB->UE_list.DLSCH_pdu[CC_idP][0][UE_id].payload[0], RA_template->msg4_TBsize));
if (opt_enabled == 1) {
trace_pdu (1, (uint8_t *) eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], rrc_sdu_length, UE_id, 3, UE_RNTI (module_idP, UE_id), eNB->frame, eNB->subframe, 0, 0);
LOG_D (OPT, "[eNB %d][DLSCH] CC_id %d Frame %d trace pdu for rnti %x with size %d\n", module_idP, CC_idP, frameP, UE_RNTI (module_idP, UE_id), rrc_sdu_length);
}
} // CCE Allocation feasible
} // 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_TEMPLATE * RA_template)
{
eNB_MAC_INST *eNB = RC.mac[module_idP];
COMMON_channels_t *cc = eNB->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 = &eNB->UE_list;
nfapi_dl_config_request_body_t *dl_req;
int round;
/*
#ifdef Rel14
COMMON_channels_t *cc = eNB->common_channels;
int rmax = 0;
int rep = 0;
int reps = 0;
first_rb = 0;
struct PRACH_ConfigSIB_v1310 *ext4_prach;
PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
PRACH_ParametersCE_r13_t *p[4];
if (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];
default:
AssertFatal(1==0,"Illegal count for prach_ParametersListCE_r13 %d\n",prach_ParametersListCE_r13->list.count);
}
}
#endif
*/
// check HARQ status and retransmit if necessary
UE_id = find_UE_id (module_idP, RA_template->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_template->harq_pid];
vrb_map = cc[CC_idP].vrb_map;
dl_req = &eNB->DL_req[CC_idP].dl_config_request_body;
dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->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)\n", module_idP, CC_idP, frameP, subframeP, RA_template->harq_pid, round);
if (round != 8) {
#ifdef Rel14
if (RA_template->rach_resource_type > 0) {
AssertFatal (1 == 0, "Msg4 Retransmissions not handled yet for BL/CE UEs\n");
} else
#endif
{
if ((RA_template->Msg4_frame == frameP) && (RA_template->Msg4_subframe == subframeP)) {
//RA_template->wait_ack_Msg4++;
// we have to schedule a retransmission
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_template->rnti, // rnti
1, // rnti_type, CRNTI
RA_template->harq_pid, // harq_process
1, // tpc, none
getRIV (N_RB_DL, first_rb, 4), // resource_block_coding
RA_template->msg4_mcs, // mcs
1, // ndi
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_template->rnti)) {
dl_req->number_dci++;
dl_req->number_pdu++;
LOG_D (MAC, "msg4 retransmission for rnti %x (round %d) fsf %d/%d\n", RA_template->rnti, round, frameP, subframeP);
// DLSCH Config
fill_nfapi_dlsch_config (eNB, dl_req, RA_template->msg4_TBsize, -1 /* retransmission, no pdu_index */ ,
RA_template->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
} else
LOG_D (MAC, "msg4 retransmission for rnti %x (round %d) fsf %d/%d CCE allocation failed!\n", RA_template->rnti, round, frameP, subframeP);
// Program PUCCH1a for ACK/NAK
fill_nfapi_uci_acknak (module_idP, CC_idP, RA_template->rnti, (frameP * 10) + subframeP, dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx);
// prepare frame for retransmission
if (RA_template->Msg4_subframe > 1)
RA_template->Msg4_frame++;
RA_template->Msg4_frame &= 1023;
RA_template->Msg4_subframe = (RA_template->Msg4_subframe + 8) % 10;
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_template->rnti, round, RA_template->Msg4_frame, RA_template->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_template->wait_ack_Msg4 = 0;
RA_template->RA_active = FALSE;
UE_id = find_UE_id (module_idP, RA_template->rnti);
DevAssert (UE_id != -1);
eNB->UE_list.UE_template[UE_PCCID (module_idP, UE_id)][UE_id].configured = TRUE;
}
}
void
schedule_RA (module_id_t module_idP, frame_t frameP, sub_frame_t subframeP)
{
int CC_id;
eNB_MAC_INST *eNB = RC.mac[module_idP];
COMMON_channels_t *cc = eNB->common_channels;
RA_TEMPLATE *RA_template;
uint8_t i;
start_meas (&eNB->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_template = (RA_TEMPLATE *) & cc[CC_id].RA_template[i];
if (RA_template->RA_active == TRUE) {
LOG_I (MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d RA %d is active (generate RAR %d, generate_Msg4 %d, wait_ack_Msg4 %d, rnti %x)\n",
module_idP, frameP, subframeP, CC_id, i, RA_template->generate_rar, RA_template->generate_Msg4, RA_template->wait_ack_Msg4, RA_template->rnti);
if (RA_template->generate_rar == 1)
generate_Msg2 (module_idP, CC_id, frameP, subframeP, RA_template);
else if (RA_template->generate_Msg4 == 1)
generate_Msg4 (module_idP, CC_id, frameP, subframeP, RA_template);
else if (RA_template->wait_ack_Msg4 == 1)
check_Msg4_retransmission (module_idP, CC_id, frameP, subframeP, RA_template);
} // RA_active == TRUE
} // for i=0 .. N_RA_PROC-1
} // CC_id
stop_meas (&eNB->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
#ifdef Rel14
, uint8_t rach_resource_type
#endif
)
{
uint8_t i;
COMMON_channels_t *cc = &RC.mac[module_idP]->common_channels[CC_id];
RA_TEMPLATE *RA_template = &cc->RA_template[0];
struct PRACH_ConfigSIB_v1310 *ext4_prach = NULL;
PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13 = NULL;
if (cc->radioResourceConfigCommon_BR && cc->radioResourceConfigCommon_BR->ext4) {
ext4_prach = cc->radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;
}
LOG_I (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);
#ifdef Rel14
LOG_I (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);
#endif
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_template[i].RA_active == FALSE && RA_template[i].wait_ack_Msg4 == 0) {
int loop = 0;
LOG_D (MAC, "Frame %d, Subframe %d: Activating RA process %d\n", frameP, subframeP, i);
RA_template[i].RA_active = TRUE;
RA_template[i].generate_rar = 1;
RA_template[i].generate_Msg4 = 0;
RA_template[i].wait_ack_Msg4 = 0;
RA_template[i].timing_offset = timing_offset;
RA_template[i].preamble_subframe = subframeP;
#ifdef Rel14
RA_template[i].rach_resource_type = rach_resource_type;
RA_template[i].msg2_mpdcch_repetition_cnt = 0;
RA_template[i].msg4_mpdcch_repetition_cnt = 0;
#endif
RA_template[i].Msg2_frame = frameP + ((subframeP > 5) ? 1 : 0);
RA_template[i].Msg2_subframe = (subframeP + 4) % 10;
/* TODO: find better procedure to allocate RNTI */
do {
RA_template[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_template[i].rnti) == -1 &&
/* 1024 and 60000 arbirarily chosen, not coming from standard */
RA_template[i].rnti >= 1024 && RA_template[i].rnti < 60000));
if (loop == 100) {
printf ("%s:%d:%s: FATAL ERROR! contact the authors\n", __FILE__, __LINE__, __FUNCTION__);
abort ();
}
RA_template[i].RA_rnti = ra_rnti;
RA_template[i].preamble_index = preamble_index;
LOG_I (MAC, "[eNB %d][RAPROC] CC_id %d Frame %d Activating RAR generation in Frame %d, subframe %d for process %d, rnti %x, RA_active %d\n",
module_idP, CC_id, frameP, RA_template[i].Msg2_frame, RA_template[i].Msg2_subframe, i, RA_template[i].rnti, RA_template[i].RA_active);
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);
}
void
cancel_ra_proc (module_id_t module_idP, int CC_id, frame_t frameP, rnti_t rnti)
{
unsigned char i;
RA_TEMPLATE *RA_template = (RA_TEMPLATE *) & RC.mac[module_idP]->common_channels[CC_id].RA_template[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_template[i].rnti) {
RA_template[i].RA_active = FALSE;
RA_template[i].generate_rar = 0;
RA_template[i].generate_Msg4 = 0;
RA_template[i].wait_ack_Msg4 = 0;
RA_template[i].timing_offset = 0;
RA_template[i].RRC_timer = 20;
RA_template[i].rnti = 0;
RA_template[i].msg3_round = 0;
}
}
}
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