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8ffe5b4920e19042fb04b2282b8e8fb8a5fef0b7
openairinterface5g/openair2/LAYER2/MAC/eNB_scheduler_RA.c
T
Robert Schmidt 8ffe5b4920 Rename UE_list_t to UE_info_t, UE_list_t separate struct 
UE_list_t is now used as a separate list. It can be e.g. used in the
scheduler to mark groups of users. The original UE_list_t is renamed to
UE_info_t to reflect that it is a container for information about UEs.
2020-04-01 10:47:02 +02:00

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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;
if (NFAPI_MODE != NFAPI_MONOLITHIC) {
oai_nfapi_hi_dci0_req(hi_dci0_req);
hi_dci0_req_body->number_of_hi=0;
}
LOG_D(MAC, "MSG3: HI_DCI0 SFN/SF:%d number_of_dci:%d number_of_hi:%d\n", NFAPI_SFNSF2DEC(hi_dci0_req->sfn_sf), hi_dci0_req_body->number_of_dci, hi_dci0_req_body->number_of_hi);
// save UL scheduling information for preprocessor
for (j = 0; j < ra->msg3_nb_rb; j++)
cc->vrb_map_UL[ra->msg3_first_rb + j] = 1;
LOG_D(MAC,
"[eNB %d][PUSCH-RA %x] CC_id %d Frame %d subframeP %d Scheduled (PHICH) RA (mcs %d, first rb %d, nb_rb %d,round %d)\n",
module_idP, ra->rnti, CC_id, frameP, subframeP, 10, 1, 1,
ra->msg3_round - 1);
} // if (ra->msg3_round != 0) { // program HI too
} // non-BL/CE UE case
}
//------------------------------------------------------------------------------
/*
* Generate the RAR (message2)
*/
void generate_Msg2(module_id_t module_idP,
int CC_idP,
frame_t frameP,
sub_frame_t subframeP,
RA_t *ra)
//------------------------------------------------------------------------------
{
eNB_MAC_INST *mac = RC.mac[module_idP];
eNB_RRC_INST *rrc = RC.rrc[module_idP];
COMMON_channels_t *cc = mac->common_channels;
uint8_t *vrb_map = NULL;
int first_rb = 0;
int N_RB_DL = 0;
nfapi_dl_config_request_pdu_t *dl_config_pdu = NULL;
nfapi_tx_request_pdu_t *TX_req = NULL;
nfapi_dl_config_request_body_t *dl_req_body = NULL;
vrb_map = cc[CC_idP].vrb_map;
dl_req_body = &mac->DL_req[CC_idP].dl_config_request_body;
dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);
uint8_t PUSCH_Rep_Level;
int rmax = 0;
int rep = 0;
int reps = 0;
int num_nb = 0;
first_rb = 0;
struct LTE_PRACH_ConfigSIB_v1310 *ext4_prach = NULL;
LTE_PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13 = NULL;
LTE_PRACH_ParametersCE_r13_t *p[4] = { NULL, NULL, NULL, NULL };
uint16_t absSF = (10 * frameP) + subframeP;
uint16_t absSF_Msg2 = (10 * ra->Msg2_frame) + ra->Msg2_subframe;
if (ra->rach_resource_type > 0) {
PUSCH_Rep_Level= *(rrc->configuration.pusch_repetitionLevelCEmodeA_r13[CC_idP]);
} else {
PUSCH_Rep_Level= 0;
}
if (absSF > absSF_Msg2) {
return; // we're not ready yet
}
if (cc[CC_idP].mib->message.schedulingInfoSIB1_BR_r13 > 0 && cc[CC_idP].radioResourceConfigCommon_BR) {
ext4_prach = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;
switch (prach_ParametersListCE_r13->list.count) {
case 4:
p[3] = prach_ParametersListCE_r13->list.array[3];
case 3:
p[2] = prach_ParametersListCE_r13->list.array[2];
case 2:
p[1] = prach_ParametersListCE_r13->list.array[1];
case 1:
p[0] = prach_ParametersListCE_r13->list.array[0];
break;
default:
AssertFatal (1 == 0, "Illegal count for prach_ParametersListCE_r13 %d\n", (int) prach_ParametersListCE_r13->list.count);
break;
}
}
if (ra->rach_resource_type > 0) {
/* This uses an MPDCCH Type 2 common allocation according to Section 9.1.5 36-213
* Parameters:
* p = 2 + 4 PRB set (number of PRB pairs 3)
* rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3
* if CELevel = 0,1 => Table 9.1.5-1b for MPDCCH candidates
* if CELevel = 2,3 => Table 9.1.5-2b for MPDCCH candidates
* distributed transmission
*/
/* rmax from SIB2 information */
AssertFatal (rmax < 9, "rmax > 8!\n"); // not sure of this assertion
rmax = 1 << p[ra->rach_resource_type - 1]->mpdcch_NumRepetition_RA_r13;
/* Choose r1 by default for RAR (Table 9.1.5-5) */
rep = 0;
/* Get actual repetition count from Table 9.1.5-3 */
reps = (rmax <= 8) ? (1 << rep) : (rmax >> (3 - rep));
/* Get narrowband according to higher-layer config */
num_nb = p[ra->rach_resource_type - 1]->mpdcch_NarrowbandsToMonitor_r13.list.count;
ra->msg2_narrowband = *p[ra->rach_resource_type - 1]->mpdcch_NarrowbandsToMonitor_r13.list.array[ra->preamble_index % num_nb] - 1;
first_rb = narrowband_to_first_rb(&cc[CC_idP], ra->msg2_narrowband);
if ((ra->msg2_mpdcch_repetition_cnt == 0) && (mpdcch_sf_condition(mac, CC_idP, frameP, subframeP, rmax, TYPE2, -1) > 0)) {
ra->msg2_mpdcch_done = 0;
/* MPDCCH configuration for RAR */
LOG_D(MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2 for CE Level %d, Programming MPDCCH %d repetitions\n",
module_idP,
frameP,
subframeP,
ra->rach_resource_type - 1,
reps);
memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t));
dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE;
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_mpdcch_pdu));
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format = (ra->rach_resource_type > 1) ? 11 : 10;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band = ra->msg2_narrowband;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_prb_pairs = 6;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment = 0; // Note: this can be dynamic
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_tansmission_type = 1; // imposed (9.1.5 in 213) for Type 2 Common search space
AssertFatal (cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 != NULL, "cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 is null\n");
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
LOG_E(MAC, "start_symbol = %d \n", dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol);
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index = 0; // Note: this should be dynamic
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level = 24; // OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type = 2; // RA-RNTI
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = ra->RA_rnti;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode = (ra->rach_resource_type < 3) ? 1 : 2;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init = cc[CC_idP].physCellId;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.initial_transmission_sf_io = (frameP * 10) + subframeP;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power = 6000; // 0dB
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding = getRIV(6, 0, 6) | (ra->msg2_narrowband<<5);
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs = 0; // adjust according to size of RAR, 208 bits with N1A_PRB=3
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels = 0; // fix to 4 for now
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_resource_offset = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_subframe_repetition_number = rep;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc = 1; // N1A_PRB=3 (36.212) => 56 bits
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index_length = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.allocate_prach_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.frequency_hopping_enabled_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding = 0; // this is not needed by OAI L1, but should be filled in
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_tx_antenna_ports = 1;
ra->msg2_mpdcch_repetition_cnt++;
dl_req_body->number_pdu++;
ra->Msg2_subframe = (ra->Msg2_subframe + 9) % 10;
} // repetition_count == 0 && SF condition met
if (ra->msg2_mpdcch_repetition_cnt > 0) { // we're in a stream of repetitions
if ((ra->msg2_mpdcch_repetition_cnt == reps) && (ra->msg2_mpdcch_done == 0)) { // this is the last mpdcch repetition
ra->msg2_mpdcch_done = 1;
if (cc[CC_idP].tdd_Config == NULL) { // FDD case
// wait 2 subframes for PDSCH transmission
if (subframeP > 7)
ra->Msg2_frame = (frameP + 1) & 1023;
else
ra->Msg2_frame = frameP;
ra->Msg2_subframe = (subframeP + 2) % 10; // +2 is the "n+x" from Section 7.1.11 in 36.213
LOG_D(MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, programmed Msg2 for %d.%d\n",
module_idP,
frameP,
subframeP,
ra->Msg2_frame,
ra->Msg2_subframe);
} else {
AssertFatal(1 == 0, "TDD case not done yet\n");
}
} else if (ra->msg2_mpdcch_done == 0) { // mpdcch_repetition_count != reps
LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, MPDCCH repetition %d\n",
module_idP,
frameP,
subframeP,
ra->msg2_mpdcch_repetition_cnt);
ra->msg2_mpdcch_repetition_cnt++;
}
ra->pusch_repetition_levels = PUSCH_Rep_Level;
if((ra->Msg2_frame == frameP) && (ra->Msg2_subframe == subframeP)) {
/* Program PDSCH */
LOG_D(MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming PDSCH\n",
module_idP,
frameP,
subframeP);
dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t));
dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_dlsch_pdu));
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index = mac->pdu_index[CC_idP];
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->RA_rnti;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0; // localized
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV(N_RB_DL, first_rb, 6);
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2; // QPSK
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1; // first block
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme = (cc[CC_idP].p_eNB == 1) ? 0 : 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands = 1;
// dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index = ;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4; // 0 dB
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize(cc[CC_idP].mib->message.dl_Bandwidth); // ignored
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode = (cc[CC_idP].p_eNB == 1) ? 1 : 2;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1;
// dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector = ;
/* Rel10 fields */
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
/* Rel13 fields */
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type = (ra->rach_resource_type < 3) ? 1 : 2;;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type = 2; // not SI message
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.initial_transmission_sf_io = (10 * frameP) + subframeP;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag = 0;
dl_req_body->number_pdu++;
fill_rar_br(mac, CC_idP, ra, frameP, subframeP, cc[CC_idP].RAR_pdu.payload, ra->rach_resource_type - 1);
/* Program UL processing for Msg3, same as regular LTE */
get_Msg3alloc (&cc[CC_idP], subframeP, frameP, &ra->Msg3_frame, &ra->Msg3_subframe);
add_msg3 (module_idP, CC_idP, ra, frameP, subframeP);
ra->state = WAITMSG3;
/* DL request */
LOG_D(MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming TX Req\n",
module_idP,
frameP,
subframeP);
mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
TX_req = &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->TX_req[CC_idP].tx_request_body.number_of_pdus];
TX_req->pdu_length = 7; // This should be changed if we have more than 1 preamble
TX_req->pdu_index = mac->pdu_index[CC_idP]++;
TX_req->num_segments = 1;
TX_req->segments[0].segment_length = 7;
TX_req->segments[0].segment_data = cc[CC_idP].RAR_pdu.payload;
mac->TX_req[CC_idP].tx_request_body.number_of_pdus++;
}
}
} else {
if ((ra->Msg2_frame == frameP) && (ra->Msg2_subframe == subframeP)) {
LOG_D(MAC,
"[eNB %d] CC_id %d Frame %d, subframeP %d: Generating RAR DCI, state %d\n",
module_idP, CC_idP, frameP, subframeP, ra->state);
// Allocate 4 PRBS starting in RB 0
first_rb = 0;
vrb_map[first_rb] = 1;
vrb_map[first_rb + 1] = 1;
vrb_map[first_rb + 2] = 1;
vrb_map[first_rb + 3] = 1;
memset((void *) dl_config_pdu, 0, sizeof(nfapi_dl_config_request_pdu_t));
dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE;
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dci_dl_pdu));
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DCI_DL_PDU_REL8_TAG;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format = NFAPI_DL_DCI_FORMAT_1A;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level = 4;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti = ra->RA_rnti;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type = 2; // RA-RNTI : see Table 4-10 from SCF082 - nFAPI specifications
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power = 6000; // equal to RS power
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process = 0;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tpc = 1; // no TPC
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.new_data_indicator_1 = 1;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_1 = 0;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.redundancy_version_1 = 0;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.virtual_resource_block_assignment_flag = 0;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding = getRIV(N_RB_DL, first_rb, 4);
// This checks if the above DCI allocation is feasible in current subframe
if (!CCE_allocation_infeasible(module_idP, CC_idP, 0, subframeP,
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level, ra->RA_rnti)) {
LOG_D(MAC,
"Frame %d: Subframe %d : Adding common DCI for RA_RNTI %x\n",
frameP, subframeP, ra->RA_rnti);
dl_req_body->number_dci++;
dl_req_body->number_pdu++;
dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
memset((void *) dl_config_pdu, 0, sizeof(nfapi_dl_config_request_pdu_t));
dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dlsch_pdu));
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL8_TAG;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index = mac->pdu_index[CC_idP];
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->RA_rnti;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2; // format 1A/1B/1D
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0; // localized
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV(N_RB_DL, first_rb, 4);
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2; //QPSK
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1; // first block
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme = (cc->p_eNB == 1) ? 0 : 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands = 1;
// dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index = ;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4; // 0 dB
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize(cc->mib->message.dl_Bandwidth); // ignored
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode = (cc->p_eNB == 1) ? 1 : 2;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1;
// dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector = ;
dl_req_body->number_pdu++;
mac->DL_req[CC_idP].sfn_sf = frameP<<4 | subframeP;
// Program UL processing for Msg3
get_Msg3alloc(&cc[CC_idP], subframeP, frameP,&ra->Msg3_frame, &ra->Msg3_subframe);
LOG_D(MAC,
"Frame %d, Subframe %d: Setting Msg3 reception for Frame %d Subframe %d\n",
frameP, subframeP, ra->Msg3_frame,
ra->Msg3_subframe);
fill_rar(module_idP, CC_idP, ra, frameP, cc[CC_idP].RAR_pdu.payload, N_RB_DL, 7);
add_msg3(module_idP, CC_idP, ra, frameP, subframeP);
ra->state = WAITMSG3;
LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:WAITMSG3\n", module_idP, frameP, subframeP);
T(T_ENB_MAC_UE_DL_RAR_PDU_WITH_DATA, T_INT(module_idP),
T_INT(CC_idP), T_INT(ra->RA_rnti), T_INT(frameP),
T_INT(subframeP), T_INT(0 /*harq_pid always 0? */ ),
T_BUFFER(cc[CC_idP].RAR_pdu.payload, 7));
// DL request
mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
TX_req =
&mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->TX_req[CC_idP].tx_request_body.number_of_pdus];
TX_req->pdu_length = 7; // This should be changed if we have more than 1 preamble
TX_req->pdu_index = mac->pdu_index[CC_idP]++;
TX_req->num_segments = 1;
TX_req->segments[0].segment_length = 7;
TX_req->segments[0].segment_data =
cc[CC_idP].RAR_pdu.payload;
mac->TX_req[CC_idP].tx_request_body.number_of_pdus++;
if(RC.mac[module_idP]->scheduler_mode == SCHED_MODE_FAIR_RR) {
set_dl_ue_select_msg2(CC_idP, 4, -1, ra->rnti);
}
} // PDCCH CCE allocation is feasible
} // Msg2 frame/subframe condition
} // else BL/CE
}
//------------------------------------------------------------------------------
/*
* Generate message 4 of RA procedure (RRC connection setup)
*/
void
generate_Msg4(module_id_t module_idP,
int CC_idP,
frame_t frameP,
sub_frame_t subframeP,
RA_t *ra)
//------------------------------------------------------------------------------
{
eNB_MAC_INST *mac = RC.mac[module_idP];
COMMON_channels_t *cc = mac->common_channels;
UE_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_I(MAC, "generate_Msg4 ra->Msg4_frame SFN/SF: %d.%d, frameP SFN/SF: %d.%d FOR eNB_Mod: %d \n", ra->Msg4_frame, ra->Msg4_subframe, frameP, subframeP, module_idP);
if ((ra->Msg4_frame == frameP) && (ra->Msg4_subframe == subframeP)) {
// Get RRCConnectionSetup for Piggyback
/*rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH, 1, // 1 transport block
&cc[CC_idP].CCCH_pdu.payload[0], ENB_FLAG_YES, module_idP, 0); // not used in this case*/
// check if there's data on the CCCH to send with Msg4
rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH,
UE_RNTI(module_idP,UE_id),1, // 1 transport block
&cc[CC_idP].CCCH_pdu.payload[0], 0); // not used in this case
if (rrc_sdu_length > 0) {
LOG_D(MAC,
"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: UE_id %d, rrc_sdu_length %d\n",
module_idP, CC_idP, frameP, subframeP, UE_id, rrc_sdu_length);
// AssertFatal(rrc_sdu_length > 0,
// "[MAC][eNB Scheduler] CCCH not allocated, rrc_sdu_length: %d\n", rrc_sdu_length);
LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating Msg4 with RRC Piggyback (RNTI %x)\n",
module_idP, CC_idP, frameP, subframeP, ra->rnti);
/// Choose first 4 RBs for Msg4, should really check that these are free!
first_rb = 0;
vrb_map[first_rb] = 1;
vrb_map[first_rb + 1] = 1;
vrb_map[first_rb + 2] = 1;
vrb_map[first_rb + 3] = 1;
// Compute MCS/TBS for 3 PRB (coded on 4 vrb)
msg4_header = 1 + 6 + 1; // CR header, CR CE, SDU header
if ((rrc_sdu_length + msg4_header) <= 22) {
ra->msg4_mcs = 4;
ra->msg4_TBsize = 22;
} else if ((rrc_sdu_length + msg4_header) <= 28) {
ra->msg4_mcs = 5;
ra->msg4_TBsize = 28;
} else if ((rrc_sdu_length + msg4_header) <= 32) {
ra->msg4_mcs = 6;
ra->msg4_TBsize = 32;
} else if ((rrc_sdu_length + msg4_header) <= 41) {
ra->msg4_mcs = 7;
ra->msg4_TBsize = 41;
} else if ((rrc_sdu_length + msg4_header) <= 49) {
ra->msg4_mcs = 8;
ra->msg4_TBsize = 49;
} else if ((rrc_sdu_length + msg4_header) <= 57) {
ra->msg4_mcs = 9;
ra->msg4_TBsize = 57;
}
fill_nfapi_dl_dci_1A(dl_config_pdu, 4, // aggregation_level
ra->rnti, // rnti
1, // rnti_type, CRNTI
ra->harq_pid, // harq_process
1, // tpc, none
getRIV(N_RB_DL, first_rb, 4), // resource_block_coding
ra->msg4_mcs, // mcs
1 - UE_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(mac, dl_req_body, ra->msg4_TBsize, mac->pdu_index[CC_idP], ra->rnti, 2, // resource_allocation_type : format 1A/1B/1D
0, // virtual_resource_block_assignment_flag : localized
getRIV(N_RB_DL, first_rb, 4), // resource_block_coding : RIV, 4 PRB
2, // modulation: QPSK
0, // redundancy version
1, // transport_blocks
0, // transport_block_to_codeword_swap_flag (0)
(cc->p_eNB == 1) ? 0 : 1, // transmission_scheme
1, // number of layers
1, // number of subbands
//0, // codebook index
1, // ue_category_capacity
4, // pa: 0 dB
0, // delta_power_offset_index
0, // ngap
1, // NPRB = 3 like in DCI
(cc->p_eNB == 1) ? 1 : 2, // transmission mode
1, // num_bf_prb_per_subband
1); // num_bf_vector
LOG_D(MAC,
"Filled DLSCH config, pdu number %d, non-dci pdu_index %d\n",
dl_req_body->number_pdu, mac->pdu_index[CC_idP]);
// Tx request
mac->TX_req[CC_idP].sfn_sf =
fill_nfapi_tx_req(&mac->TX_req[CC_idP].tx_request_body,
(frameP * 10) + subframeP,
rrc_sdu_length+offset,
mac->pdu_index[CC_idP],
mac->UE_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_I(MAC,
"eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Delaying Msg4 for RRC Piggyback (RNTI %x)\n",
module_idP, CC_idP, frameP, subframeP, ra->rnti);
ra->Msg4_subframe ++;
ra->Msg4_delay_cnt++;
if (ra->Msg4_delay_cnt==10) cancel_ra_proc(module_idP, CC_idP, frameP, ra->rnti);
if (ra->Msg4_subframe == 10) {
ra->Msg4_frame++;
ra->Msg4_frame&=1023;
ra->Msg4_subframe = 0;
}
}
} // msg4 frame/subframe
} // else rach_resource_type
}
void
check_Msg4_retransmission(module_id_t module_idP, int CC_idP,
frame_t frameP, sub_frame_t subframeP, RA_t *ra) {
eNB_MAC_INST *mac = RC.mac[module_idP];
COMMON_channels_t *cc = mac->common_channels;
int UE_id = -1;
uint8_t *vrb_map;
int first_rb;
int N_RB_DL;
nfapi_dl_config_request_pdu_t *dl_config_pdu;
UE_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(mac, dl_req_body, ra->msg4_TBsize,
-1
/* retransmission, no pdu_index */
, ra->rnti, 2, // resource_allocation_type : format 1A/1B/1D
0, // virtual_resource_block_assignment_flag : localized
getRIV(N_RB_DL, first_rb, 4), // resource_block_coding : RIV, 4 PRB
2, // modulation: QPSK
round & 3, // redundancy version
1, // transport_blocks
0, // transport_block_to_codeword_swap_flag (0)
(cc->p_eNB == 1) ? 0 : 1, // transmission_scheme
1, // number of layers
1, // number of subbands
//0, // codebook index
1, // ue_category_capacity
4, // pa: 0 dB
0, // delta_power_offset_index
0, // ngap
1, // NPRB = 3 like in DCI
(cc->p_eNB == 1) ? 1 : 2, // transmission mode
1, // num_bf_prb_per_subband
1); // num_bf_vector
if(RC.mac[module_idP]->scheduler_mode == SCHED_MODE_FAIR_RR) {
set_dl_ue_select_msg4(CC_idP, 4, UE_id, ra->rnti);
}
} else
LOG_D(MAC,
"msg4 retransmission for rnti %x (round %d) fsf %d/%d CCE allocation failed!\n",
ra->rnti, round, frameP, subframeP);
// Program PUCCH1a for ACK/NAK
fill_nfapi_uci_acknak(module_idP, CC_idP,
ra->rnti,
(frameP * 10) + subframeP,
dl_config_pdu->dci_dl_pdu.
dci_dl_pdu_rel8.cce_idx);
// prepare frame for retransmission
get_retransmission_timing(mac->common_channels[CC_idP].tdd_Config,&ra->Msg4_frame,&ra->Msg4_subframe);
LOG_W(MAC,
"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Msg4 not acknowledged, adding ue specific dci (rnti %x) for RA (Msg4 Retransmission round %d in %d.%d)\n",
module_idP, CC_idP, frameP, subframeP, ra->rnti,
round, ra->Msg4_frame, ra->Msg4_subframe);
} // Msg4 frame/subframe
} // regular LTE case
} else {
LOG_D(MAC,
"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d : Msg4 acknowledged\n",
module_idP, CC_idP, frameP, subframeP);
ra->state = IDLE;
LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:IDLE\n", module_idP, frameP, subframeP);
UE_id = find_UE_id(module_idP, ra->rnti);
DevAssert(UE_id != -1);
mac->UE_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\n",
module_idP, CC_id, frameP, subframeP, preamble_index);
LOG_D(MAC,
"[eNB %d][RAPROC] CC_id %d Frame %d, Subframe %d PRACH resource type %d\n",
module_idP, CC_id, frameP, subframeP, rach_resource_type);
uint16_t msg2_frame = frameP;
uint16_t msg2_subframe = subframeP;
int offset;
static uint8_t failure_cnt = 0 ;
if (prach_ParametersListCE_r13 &&
prach_ParametersListCE_r13->list.count < rach_resource_type) {
LOG_E(MAC,
"[eNB %d][RAPROC] CC_id %d Received impossible PRACH resource type %d, only %d CE levels configured\n",
module_idP, CC_id, rach_resource_type,
(int) prach_ParametersListCE_r13->list.count);
return;
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC, 1);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC, 0);
for (i = 0; i < NB_RA_PROC_MAX; i++) {
if (ra[i].state == IDLE) {
int loop = 0;
LOG_D(MAC, "Frame %d, Subframe %d: Activating RA process %d\n",
frameP, subframeP, i);
ra[i].state = MSG2;
ra[i].Msg4_delay_cnt=0;
ra[i].timing_offset = timing_offset;
ra[i].preamble_subframe = subframeP;
ra[i].rach_resource_type = rach_resource_type;
ra[i].msg2_mpdcch_repetition_cnt = 0;
ra[i].msg4_mpdcch_repetition_cnt = 0;
//TODO Fill in other TDD config. What about nfapi_mode?
if(cc->tdd_Config!=NULL) {
switch(cc->tdd_Config->subframeAssignment) {
default:
printf("%s:%d: TODO\n", __FILE__, __LINE__);
abort();
case 1 :
offset = 6;
break;
}
} else { //FDD
// DJP - this is because VNF is 2 subframes ahead of PNF and TX needs 4 subframes
if (NFAPI_MODE != NFAPI_MONOLITHIC)
offset = 7;
else
offset = 5;
}
add_subframe(&msg2_frame, &msg2_subframe, offset);
ra[i].Msg2_frame = msg2_frame;
ra[i].Msg2_subframe = msg2_subframe;
LOG_D(MAC,"%s() Msg2[%04d%d] SFN/SF:%04d%d offset:%d\n", __FUNCTION__,ra[i].Msg2_frame,ra[i].Msg2_subframe,frameP,subframeP,offset);
ra[i].Msg2_subframe = (subframeP + offset) % 10;
/* TODO: find better procedure to allocate RNTI */
do {
if (IS_SOFTMODEM_IQPLAYER) { /* iq player mode, use deterministic rnti */
static int drnti[MAX_MOBILES_PER_ENB];
static int drnti_def[]={ 0xbda7, 0x71da, 0x9c40, 0xc350, 0x2710, 0x4e20, 0x7530, 0x1388, 0x3a98, 0x61a8, 0x88b8, 0xafc8, 0xd6d8, 0x1b58, 0x4268, 0x6978 };
for (int j=0; j<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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