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openairinterface5g/openair2/LAYER2/MAC/eNB_scheduler_RA.c
T
Melissa Elkadi 9b16c1d860 Merge branch 'eurecom-develop' into episys/merge_nsa_w_develop 
At this point we are successfully able to build.
Additionally, we can run the scenario,
however, it does not pass. It seems that the gNB
is not connecting to the proxy correctly. Just
wanted to push the progress so far. FYI, the items
that had to be changed to correct the linking issues
were the following:

 - mac_rrc_data_ind_ue vs. nr_mac_rrc_data_ind_ue
 - rrc_data_req vs. nr_rrc_data_req
 - mac_rrc_data_req_ue vs. nr_mac_rrc_data_req_ue
 - rrc_data_req_ue vs. rrc_data_req_nr_ue
 - rrc_data_req vs. nr_rrc_data_req

The listed functions should be declard in the LTE/NR
UE directory depending on the functionality. Several
were mixed. i.e.: LTE functions being called in NR UE.

Also, removing siWindowLength, siWindowLength_int,
SIBType, SIBPeriod, and siPeriod_int from the NR UE RRC.
These variable were not used in the NR UE and are defined
for LTE only.

Lastly, in the NR_IF_Module.c of the NR UE, the global
variable def_dci_pdu_rel15 is not accessible. Need to
revisit this. For not it is commented out.
2021-08-11 10:23:42 -07:00

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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
*/
/* 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;
// 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 = 0; // 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 = 1;
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, 2);
// 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, 2);
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_info_t *UE_info = &mac->UE_info;
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<<p[ra->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_info->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_info.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_info.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_info.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_info.DLSCH_pdu[CC_idP][0][UE_id].payload[0], ra->msg4_TBsize));
trace_pdu (DIRECTION_DOWNLINK, (uint8_t *) mac->UE_info.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_D(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_A(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_info->UE_template[CC_idP][UE_id].oldNDI[ra->harq_pid],
0, // rv
0); // vrb_flag
UE_info->UE_template[CC_idP][UE_id].oldNDI[ra->harq_pid] = 1 - UE_info->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_info->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_info.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_info.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(&dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu],
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
dl_req_body->number_pdu++;
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_info.
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_info.DLSCH_pdu[CC_idP][0][UE_id].
payload[0], ra->msg4_TBsize));
trace_pdu(DIRECTION_DOWNLINK,
(uint8_t *) mac->
UE_info.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_D(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_info_t *UE_info = &mac->UE_info;
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_info->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_info->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(&dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu],
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
dl_req_body->number_pdu++;
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_info.UE_template[UE_PCCID(module_idP, UE_id)][UE_id].configured = TRUE;
mac->UE_info.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, timing offset %d\n",
module_idP, CC_id, frameP, subframeP, preamble_index, timing_offset);
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 :
case 3 :
case 4 :
case 5 :
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<MAX_MOBILES_PER_ENB && j< (sizeof(drnti_def)/sizeof(int));j++)
drnti[i]=drnti_def[i];
int nb_ue = 0;
for (int j = 0; j < MAX_MOBILES_PER_ENB; j++) {
if (UE_RNTI(module_idP, 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;
}
}
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