/*
* 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 1.0 (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 phy_procedures_lte_eNB.c
* \brief Implementation of eNB procedures from 36.213 LTE specifications
* \author R. Knopp, F. Kaltenberger, N. Nikaein, X. Foukas
* \date 2011
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr,navid.nikaein@eurecom.fr, x.foukas@sms.ed.ac.uk
* \note
* \warning
*/
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
#include "SCHED/extern.h"
#include "nfapi_interface.h"
#include "fapi_l1.h"
#include "UTIL/LOG/log.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "T.h"
#include "assertions.h"
#include "msc.h"
#include <time.h>
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif
void pmch_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,PHY_VARS_RN *rn,relaying_type_t r_type) {
#if defined(Rel10) || defined(Rel14)
MCH_PDU *mch_pduP=NULL;
MCH_PDU mch_pdu;
// uint8_t sync_area=255;
#endif
int subframe = proc->subframe_tx;
AssertFatal(1==0,"pmch not tested for the moment, exiting\n");
// This is DL-Cell spec pilots in Control region
generate_pilots_slot(eNB,
eNB->common_vars.txdataF,
AMP,
subframe<<1,1);
#if defined(Rel10) || defined(Rel14)
// if mcch is active, send regardless of the node type: eNB or RN
// when mcch is active, MAC sched does not allow MCCH and MTCH multiplexing
/*
mch_pduP = mac_xface->get_mch_sdu(eNB->Mod_id,
eNB->CC_id,
proc->frame_tx,
subframe);
*/
switch (r_type) {
case no_relay:
if ((mch_pduP->Pdu_size > 0) && (mch_pduP->sync_area == 0)) // TEST: only transmit mcch for sync area 0
LOG_D(PHY,"[eNB%"PRIu8"] Frame %d subframe %d : Got MCH pdu for MBSFN (MCS %"PRIu8", TBS %d) \n",
eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->mcs,
eNB->dlsch_MCH->harq_processes[0]->TBS>>3);
else {
LOG_D(PHY,"[DeNB %"PRIu8"] Frame %d subframe %d : Do not transmit MCH pdu for MBSFN sync area %"PRIu8" (%s)\n",
eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->sync_area,
(mch_pduP->Pdu_size == 0)? "Empty MCH PDU":"Let RN transmit for the moment");
mch_pduP = NULL;
}
break;
case multicast_relay:
if ((mch_pduP->Pdu_size > 0) && ((mch_pduP->mcch_active == 1) || mch_pduP->msi_active==1)) {
LOG_D(PHY,"[RN %"PRIu8"] Frame %d subframe %d: Got the MCH PDU for MBSFN sync area %"PRIu8" (MCS %"PRIu8", TBS %"PRIu16")\n",
rn->Mod_id,rn->frame, subframe,
mch_pduP->sync_area,mch_pduP->mcs,mch_pduP->Pdu_size);
} else if (rn->mch_avtive[subframe%5] == 1) { // SF2 -> SF7, SF3 -> SF8
mch_pduP= &mch_pdu;
memcpy(&mch_pduP->payload, // could be a simple copy
rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->b,
rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->TBS>>3);
mch_pduP->Pdu_size = (uint16_t) (rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->TBS>>3);
mch_pduP->mcs = rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->mcs;
LOG_D(PHY,"[RN %"PRIu8"] Frame %d subframe %d: Forward the MCH PDU for MBSFN received on SF %d sync area %"PRIu8" (MCS %"PRIu8", TBS %"PRIu16")\n",
rn->Mod_id,rn->frame, subframe,subframe%5,
rn->sync_area[subframe%5],mch_pduP->mcs,mch_pduP->Pdu_size);
} else {
mch_pduP=NULL;
}
rn->mch_avtive[subframe]=0;
break;
default:
LOG_W(PHY,"[eNB %"PRIu8"] Frame %d subframe %d: unknown relaying type %d \n",
eNB->Mod_id,proc->frame_tx,subframe,r_type);
mch_pduP=NULL;
break;
}// switch
if (mch_pduP) {
fill_eNB_dlsch_MCH(eNB,mch_pduP->mcs,1,0);
// Generate PMCH
generate_mch(eNB,proc,(uint8_t*)mch_pduP->payload);
} else {
LOG_D(PHY,"[eNB/RN] Frame %d subframe %d: MCH not generated \n",proc->frame_tx,subframe);
}
#endif
}
void common_signal_procedures (PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc) {
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
int **txdataF = eNB->common_vars.txdataF;
uint8_t *pbch_pdu=&eNB->pbch_pdu[0];
int subframe = proc->subframe_tx;
int frame = proc->frame_tx;
LOG_D(PHY,"common_signal_procedures: frame %d, subframe %d\n",frame,subframe);
// generate Cell-Specific Reference Signals for both slots
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_RS_TX,1);
generate_pilots_slot(eNB,
txdataF,
AMP,
subframe<<1,0);
// check that 2nd slot is for DL
if (subframe_select(fp,subframe) == SF_DL)
generate_pilots_slot(eNB,
txdataF,
AMP,
(subframe<<1)+1,0);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_RS_TX,0);
// First half of PSS/SSS (FDD, slot 0)
if (subframe == 0) {
if (fp->frame_type == FDD) {
generate_pss(txdataF,
AMP,
fp,
(fp->Ncp==NORMAL) ? 6 : 5,
0);
generate_sss(txdataF,
AMP,
fp,
(fp->Ncp==NORMAL) ? 5 : 4,
0);
}
/// First half of SSS (TDD, slot 1)
if (fp->frame_type == TDD) {
generate_sss(txdataF,
AMP,
fp,
(fp->Ncp==NORMAL) ? 6 : 5,
1);
}
// generate PBCH (Physical Broadcast CHannel) info
/// generate PBCH
if ((frame&3)==0) {
AssertFatal(eNB->pbch_configured==1,"PBCH was not configured by MAC\n");
eNB->pbch_configured=0;
}
generate_pbch(&eNB->pbch,
txdataF,
AMP,
fp,
pbch_pdu,
frame&3);
}
else if ((subframe == 1) &&
(fp->frame_type == TDD)){
generate_pss(txdataF,
AMP,
fp,
2,
2);
}
// Second half of PSS/SSS (FDD, slot 10)
else if ((subframe == 5) &&
(fp->frame_type == FDD)) {
generate_pss(txdataF,
AMP,
&eNB->frame_parms,
(fp->Ncp==NORMAL) ? 6 : 5,
10);
generate_sss(txdataF,
AMP,
&eNB->frame_parms,
(fp->Ncp==NORMAL) ? 5 : 4,
10);
}
// Second-half of SSS (TDD, slot 11)
else if ((subframe == 5) &&
(fp->frame_type == TDD)) {
generate_sss(txdataF,
AMP,
fp,
(fp->Ncp==NORMAL) ? 6 : 5,
11);
}
// Second half of PSS (TDD, slot 12)
else if ((subframe == 6) &&
(fp->frame_type == TDD)) {
generate_pss(txdataF,
AMP,
fp,
2,
12);
}
}
void pdsch_procedures(PHY_VARS_eNB *eNB,
eNB_rxtx_proc_t *proc,
int harq_pid,
LTE_eNB_DLSCH_t *dlsch,
LTE_eNB_DLSCH_t *dlsch1,
LTE_eNB_UE_stats *ue_stats,
int ra_flag) {
int frame=proc->frame_tx;
int subframe=proc->subframe_tx;
LTE_DL_eNB_HARQ_t *dlsch_harq=dlsch->harq_processes[harq_pid];
int input_buffer_length = dlsch_harq->TBS/8;
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
if (dlsch->rnti == 0x02) {//frame < 200) {
LOG_I(PHY,
"[eNB %"PRIu8"][PDSCH %"PRIx16"/%"PRIu8"] Frame %d, subframe %d: Generating PDSCH/DLSCH with input size = %"PRIu16", pdsch_start %d, G %d, nb_rb %"PRIu16", rb0 %x, rb1 %x, TBS %"PRIu16", pmi_alloc %"PRIx64", rv %"PRIu8" (round %"PRIu8")\n",
eNB->Mod_id, dlsch->rnti,harq_pid,
frame, subframe, input_buffer_length, dlsch_harq->pdsch_start,
get_G(fp,
dlsch_harq->nb_rb,
dlsch_harq->rb_alloc,
dlsch_harq->Qm,
dlsch_harq->Nl,
dlsch_harq->pdsch_start,
frame,
subframe,
dlsch_harq->mimo_mode==TM7?7:0),
dlsch_harq->nb_rb,
dlsch_harq->rb_alloc[0],
dlsch_harq->rb_alloc[1],
dlsch_harq->TBS,
pmi2hex_2Ar1(dlsch_harq->pmi_alloc),
dlsch_harq->rvidx,
dlsch_harq->round);
}
#if defined(MESSAGE_CHART_GENERATOR_PHY)
MSC_LOG_TX_MESSAGE(
MSC_PHY_ENB,MSC_PHY_UE,
NULL,0,
"%05u:%02u PDSCH/DLSCH input size = %"PRIu16", G %d, nb_rb %"PRIu16", TBS %"PRIu16", pmi_alloc %"PRIx16", rv %"PRIu8" (round %"PRIu8")",
frame, subframe,
input_buffer_length,
get_G(fp,
dlsch_harq->nb_rb,
dlsch_harq->rb_alloc,
dlsch_harq->Qm,
dlsch_harq->Nl,
dlsch_harq->pdsch_start,
frame,
subframe,
dlsch_harq->mimo_mode==TM7?7:0),
dlsch_harq->nb_rb,
dlsch_harq->TBS,
pmi2hex_2Ar1(dlsch_harq->pmi_alloc),
dlsch_harq->rvidx,
dlsch_harq->round);
#endif
if (ue_stats) ue_stats->dlsch_sliding_cnt++;
if (dlsch_harq->round == 0) {
if (ue_stats)
ue_stats->dlsch_trials[harq_pid][0]++;
} else {
ue_stats->dlsch_trials[harq_pid][dlsch_harq->round]++;
#ifdef DEBUG_PHY_PROC
#ifdef DEBUG_DLSCH
LOG_D(PHY,"[eNB] This DLSCH is a retransmission\n");
#endif
#endif
}
LOG_D(PHY,"Generating DLSCH/PDSCH %d\n",ra_flag);
// 36-212
start_meas(&eNB->dlsch_encoding_stats);
AssertFatal(dlsch_harq->pdu!=NULL,"dlsch_harq->pdu == NULL (rnti %x)\n",dlsch->rnti);
eNB->te(eNB,
dlsch_harq->pdu,
dlsch_harq->pdsch_start,
dlsch,
frame,subframe,
&eNB->dlsch_rate_matching_stats,
&eNB->dlsch_turbo_encoding_stats,
&eNB->dlsch_interleaving_stats);
stop_meas(&eNB->dlsch_encoding_stats);
// 36-211
start_meas(&eNB->dlsch_scrambling_stats);
dlsch_scrambling(fp,
0,
dlsch,
harq_pid,
get_G(fp,
dlsch_harq->nb_rb,
dlsch_harq->rb_alloc,
dlsch_harq->Qm,
dlsch_harq->Nl,
dlsch_harq->pdsch_start,
frame,subframe,
0),
0,
frame,
subframe<<1);
stop_meas(&eNB->dlsch_scrambling_stats);
start_meas(&eNB->dlsch_modulation_stats);
dlsch_modulation(eNB,
eNB->common_vars.txdataF,
AMP,
subframe,
dlsch_harq->pdsch_start,
dlsch,
dlsch1);
stop_meas(&eNB->dlsch_modulation_stats);
dlsch->active = 0;
dlsch_harq->round++;
}
void phy_procedures_eNB_TX(PHY_VARS_eNB *eNB,
eNB_rxtx_proc_t *proc,
relaying_type_t r_type,
PHY_VARS_RN *rn,
int do_meas)
{
UNUSED(rn);
int frame=proc->frame_tx;
int subframe=proc->subframe_tx;
uint32_t i,aa;
uint8_t harq_pid;
int8_t UE_id=0;
uint8_t num_pdcch_symbols=0;
uint8_t num_dci=0;
uint8_t ul_subframe;
uint32_t ul_frame;
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
LTE_UL_eNB_HARQ_t *ulsch_harq;
int offset = eNB->CC_id;//proc == &eNB->proc.proc_rxtx[0] ? 0 : 1;
if ((fp->frame_type == TDD) && (subframe_select(fp,subframe)==SF_UL)) return;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX+offset,1);
if (do_meas==1) start_meas(&eNB->phy_proc_tx);
// clear the transmit data array for the current subframe
for (aa=0; aa<fp->nb_antenna_ports_eNB; aa++) {
memset(&eNB->common_vars.txdataF[aa][subframe*fp->ofdm_symbol_size*(fp->symbols_per_tti)],
0,fp->ofdm_symbol_size*(fp->symbols_per_tti)*sizeof(int32_t));
}
if (is_pmch_subframe(frame,subframe,fp)) {
pmch_procedures(eNB,proc,rn,r_type);
}
else {
// this is not a pmch subframe, so generate PSS/SSS/PBCH
common_signal_procedures(eNB,proc);
}
// clear existing ulsch dci allocations before applying info from MAC (this is table
ul_subframe = pdcch_alloc2ul_subframe(fp,subframe);
ul_frame = pdcch_alloc2ul_frame(fp,frame,subframe);
// clear previous allocation information for all UEs
for (i=0; i<NUMBER_OF_UE_MAX; i++) {
if (eNB->dlsch[i][0])
eNB->dlsch[i][0]->subframe_tx[subframe] = 0;
}
/* save old HARQ information needed for PHICH generation */
for (i=0; i<NUMBER_OF_UE_MAX; i++) {
harq_pid = subframe2harq_pid(fp,ul_frame,ul_subframe);
if (eNB->ulsch[i]) {
ulsch_harq = eNB->ulsch[i]->harq_processes[harq_pid];
/* Store first_rb and n_DMRS for correct PHICH generation below.
* For PHICH generation we need "old" values of last scheduling
* for this HARQ process. 'generate_eNB_dlsch_params' below will
* overwrite first_rb and n_DMRS and 'generate_phich_top', done
* after 'generate_eNB_dlsch_params', would use the "new" values
* instead of the "old" ones.
*
* This has been tested for FDD only, may be wrong for TDD.
*
* TODO: maybe we should restructure the code to be sure it
* is done correctly. The main concern is if the code
* changes and first_rb and n_DMRS are modified before
* we reach here, then the PHICH processing will be wrong,
* using wrong first_rb and n_DMRS values to compute
* ngroup_PHICH and nseq_PHICH.
*
* TODO: check if that works with TDD.
*/
if ((subframe_select(fp,ul_subframe)==SF_UL) ||
(fp->frame_type == FDD)) {
ulsch_harq->previous_first_rb = ulsch_harq->first_rb;
ulsch_harq->previous_n_DMRS = ulsch_harq->n_DMRS;
}
}
}
// num_pdcch_symbols = DCI_pdu->num_pdcch_symbols;
num_pdcch_symbols = eNB->pdcch_vars[subframe&1].num_pdcch_symbols;
num_dci = eNB->pdcch_vars[subframe&1].num_dci;
// LOG_D(PHY,"num_pdcch_symbols %"PRIu8",(dci common %"PRIu8", dci uespec %"PRIu8"\n",num_pdcch_symbols,
// DCI_pdu->Num_common_dci,DCI_pdu->Num_ue_spec_dci);
LOG_D(PHY,"num_pdcch_symbols %"PRIu8",(number dci %"PRIu8"\n",num_pdcch_symbols,
num_dci);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,num_pdcch_symbols);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,(frame*10)+subframe);
if (num_dci > 0)
LOG_D(PHY,"[eNB %"PRIu8"] Frame %d, subframe %d: Calling generate_dci_top (pdcch) (num_dci %"PRIu8")\n",eNB->Mod_id,frame, subframe,
num_dci);
generate_dci_top(num_pdcch_symbols,
num_dci,
&eNB->pdcch_vars[subframe&1].dci_alloc[0],
0,
AMP,
fp,
eNB->common_vars.txdataF,
subframe);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PDCCH_TX,0);
// Now scan UE specific DLSCH
LTE_eNB_DLSCH_t *dlsch0,*dlsch1;
for (UE_id=0; UE_id<NUMBER_OF_UE_MAX; UE_id++)
{
dlsch0 = eNB->dlsch[(uint8_t)UE_id][0];
dlsch1 = eNB->dlsch[(uint8_t)UE_id][1];
if ((dlsch0)&&
(dlsch0->rnti>0)&&
(dlsch0->active == 1)) {
// get harq_pid
harq_pid = dlsch0->harq_ids[subframe];
AssertFatal(harq_pid>=0,"harq_pid is negative\n");
// generate pdsch
pdsch_procedures(eNB,
proc,
harq_pid,
dlsch0,
dlsch1,
&eNB->UE_stats[(uint32_t)UE_id],
0);
}
else if ((dlsch0)&&
(dlsch0->rnti>0)&&
(dlsch0->active == 0)) {
// clear subframe TX flag since UE is not scheduled for PDSCH in this subframe (so that we don't look for PUCCH later)
dlsch0->subframe_tx[subframe]=0;
}
}
generate_phich_top(eNB,
proc,
AMP);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX+offset,0);
if (do_meas==1) stop_meas(&eNB->phy_proc_tx);
}
void prach_procedures(PHY_VARS_eNB *eNB,
#ifdef Rel14
int br_flag
#endif
) {
uint16_t max_preamble[4],max_preamble_energy[4],max_preamble_delay[4];
uint16_t i;
int frame,subframe;
LTE_eNB_PRACH *prach_vars=NULL;
#ifdef Rel14
if (br_flag==1) {
subframe = eNB->proc.subframe_prach_br;
frame = eNB->proc.frame_prach_br;
pthread_mutex_lock(&eNB->UL_INFO_mutex);
eNB->UL_INFO.rach_ind_br.number_of_preambles=0;
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}
else
#endif
{
pthread_mutex_lock(&eNB->UL_INFO_mutex);
eNB->UL_INFO.rach_ind.number_of_preambles=0;
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
subframe = eNB->proc.subframe_prach;
frame = eNB->proc.frame_prach;
}
RU_t *ru;
int aa=0;
int ru_aa;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PRACH_RX,1);
for (i=0;i<eNB->num_RU;i++) {
ru=eNB->RU_list[i];
for (ru_aa=0,aa=0;ru_aa<ru->nb_rx;ru_aa++,aa++) {
eNB->prach_vars.rxsigF[0][aa] = eNB->RU_list[i]->prach_rxsigF[ru_aa];
#ifdef Rel14
int ce_level;
if (br_flag==1)
for (ce_level=0;ce_level<4;ce_level++) eNB->prach_vars_br.rxsigF[ce_level][aa] = eNB->RU_list[i]->prach_rxsigF_br[ce_level][ru_aa];
#endif
}
}
rx_prach(eNB,
eNB->RU_list[0],
&max_preamble[0],
&max_preamble_energy[0],
&max_preamble_delay[0],
frame,
0
#ifdef Rel14
,br_flag
#endif
);
//#ifdef DEBUG_PHY_PROC
LOG_D(PHY,"[RAPROC] Frame %d, subframe %d : Most likely preamble %d, energy %d dB delay %d\n",
frame,subframe,
max_preamble[0],
max_preamble_energy[0]/10,
max_preamble_delay[0]);
//q#endif
#ifdef Rel14
if (br_flag==1) {
prach_vars = &eNB->prach_vars_br;
int prach_mask;
prach_mask = is_prach_subframe(&eNB->frame_parms,eNB->proc.frame_prach_br,eNB->proc.subframe_prach_br);
eNB->UL_INFO.rach_ind_br.preamble_list = eNB->preamble_list_br;
int ind=0;
int ce_level=0;
/* Save for later, it doesn't work
for (int ind=0,ce_level=0;ce_level<4;ce_level++) {
if ((eNB->frame_parms.prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[ce_level]==1)&&
(prach_mask&(1<<(1+ce_level)) > 0) && // prach is active and CE level has finished its repetitions
(eNB->prach_vars_br.repetition_number[ce_level]==
eNB->frame_parms.prach_emtc_config_common.prach_ConfigInfo.prach_numRepetitionPerPreambleAttempt[ce_level])) {
*/
if (eNB->frame_parms.prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[0]==1){
if (max_preamble_energy[0] > 350) {
eNB->UL_INFO.rach_ind_br.number_of_preambles++;
eNB->preamble_list_br[ind].preamble_rel8.timing_advance = max_preamble_delay[ind];//
eNB->preamble_list_br[ind].preamble_rel8.preamble = max_preamble[ind];
// note: fid is implicitly 0 here, this is the rule for eMTC RA-RNTI from 36.321, Section 5.1.4
eNB->preamble_list_br[ind].preamble_rel8.rnti = 1+subframe+(eNB->prach_vars_br.first_frame[ce_level]%40);
eNB->preamble_list_br[ind].instance_length = 0; //don't know exactly what this is
eNB->preamble_list_br[ind].preamble_rel13.rach_resource_type = 1+ce_level; // CE Level
LOG_D(PHY,"Filling NFAPI indication for RACH %d CELevel %d (mask %x) : TA %d, Preamble %d, rnti %x, rach_resource_type %d\n",
ind,
ce_level,
prach_mask,
eNB->preamble_list_br[ind].preamble_rel8.timing_advance,
eNB->preamble_list_br[ind].preamble_rel8.preamble,
eNB->preamble_list_br[ind].preamble_rel8.rnti,
eNB->preamble_list_br[ind].preamble_rel13.rach_resource_type);
}
/*
ind++;
}
} */// ce_level
}
}
else
#endif
{
if (max_preamble_energy[0] > 350) {
LOG_D(PHY,"[eNB %d/%d][RAPROC] Frame %d, subframe %d Initiating RA procedure with preamble %d, energy %d.%d dB, delay %d\n",
eNB->Mod_id,
eNB->CC_id,
frame,
subframe,
max_preamble[0],
max_preamble_energy[0]/10,
max_preamble_energy[0]%10,
max_preamble_delay[0]);
T(T_ENB_PHY_INITIATE_RA_PROCEDURE, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe),
T_INT(max_preamble[0]), T_INT(max_preamble_energy[0]), T_INT(max_preamble_delay[0]));
prach_vars = &eNB->prach_vars;
pthread_mutex_lock(&eNB->UL_INFO_mutex);
eNB->UL_INFO.rach_ind.number_of_preambles = 1;
eNB->UL_INFO.rach_ind.preamble_list = eNB->preamble_list;
eNB->preamble_list[0].preamble_rel8.timing_advance = max_preamble_delay[0];
eNB->preamble_list[0].preamble_rel8.preamble = max_preamble[0];
eNB->preamble_list[0].preamble_rel8.rnti = 1+subframe; // note: fid is implicitly 0 here
eNB->preamble_list[0].preamble_rel13.rach_resource_type = 0;
eNB->preamble_list[0].instance_length = 0; //don't know exactly what this is
LOG_D(PHY,"Filling NFAPI indication for RACH : TA %d, Preamble %d, rnti %x, rach_resource_type %d\n",
eNB->preamble_list[0].preamble_rel8.timing_advance,
eNB->preamble_list[0].preamble_rel8.preamble,
eNB->preamble_list[0].preamble_rel8.rnti,
eNB->preamble_list[0].preamble_rel13.rach_resource_type);
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
} // max_preamble_energy > 350
} // else br_flag
/*
mac_xface->initiate_ra_proc(eNB->Mod_id,
eNB->CC_id,
frame,
preamble_max,
preamble_delay_list[preamble_max]*update_TA/update_TA2,
0,subframe,0);*/
/* } else {
MSC_LOG_EVENT(MSC_PHY_ENB, "0 RA Failed add user, too many");
LOG_I(PHY,"[eNB %d][RAPROC] frame %d, subframe %d: Unable to add user, max user count reached\n",
eNB->Mod_id,frame, subframe);
}*/
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PRACH_RX,0);
}
void srs_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc) {
LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
const int subframe = proc->subframe_rx;
const int frame = proc->frame_rx;
int i;
if (is_srs_occasion_common(fp,frame,subframe)) {
// Do SRS processing
// check if there is SRS and we have to use shortened format
// TODO: check for exceptions in transmission of SRS together with ACK/NACK
for (i=0;i<NUMBER_OF_UE_MAX;i++) {
if (eNB->soundingrs_ul_config_dedicated[i].active==1) {
if (lte_srs_channel_estimation(fp,
&eNB->common_vars,
&eNB->srs_vars[i],
&eNB->soundingrs_ul_config_dedicated[i],
subframe,
0/*eNB_id*/)) {
LOG_E(PHY,"problem processing SRS\n");
}
eNB->soundingrs_ul_config_dedicated[i].active=0;
}
}
}
}
void fill_sr_indication(PHY_VARS_eNB *eNB,uint16_t rnti,int frame,int subframe,uint32_t stat) {
pthread_mutex_lock(&eNB->UL_INFO_mutex);
nfapi_sr_indication_pdu_t *pdu = &eNB->UL_INFO.sr_ind.sr_pdu_list[eNB->UL_INFO.sr_ind.number_of_srs];
pdu->instance_length = 0; // don't know what to do with this
// pdu->rx_ue_information.handle = handle;
pdu->rx_ue_information.rnti = rnti;
int SNRtimes10 = dB_fixed_times10(stat) - 200;//(10*eNB->measurements.n0_power_dB[0]);
if (SNRtimes10 < -640) pdu->ul_cqi_information.ul_cqi=0;
else if (SNRtimes10 > 635) pdu->ul_cqi_information.ul_cqi=255;
else pdu->ul_cqi_information.ul_cqi=(640+SNRtimes10)/5;
pdu->ul_cqi_information.channel = 0;
eNB->UL_INFO.sr_ind.number_of_srs++;
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}
void uci_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc)
{
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
uint8_t SR_payload = 0,pucch_b0b1[4][2]= {{0,0},{0,0},{0,0},{0,0}},harq_ack[4]={0,0,0,0};
int32_t metric[4]={0,0,0,0},metric_SR=0,max_metric;
const int subframe = proc->subframe_rx;
const int frame = proc->frame_rx;
int i;
LTE_eNB_UCI *uci;
uint16_t tdd_multiplexing_mask=0;
int res;
for (i=0;i<NUMBER_OF_UE_MAX;i++) {
uci = &eNB->uci_vars[i];
if ((uci->active == 1) &&
(uci->frame == frame) &&
(uci->subframe == subframe)) {
LOG_D(PHY,"Frame %d, subframe %d: Running uci procedures (type %d) for %d \n",frame,subframe,uci->type,i);
uci->active=0;
// Null out PUCCH PRBs for noise measurement
switch(fp->N_RB_UL) {
case 6:
eNB->rb_mask_ul[0] |= (0x1 | (1<<5)); //position 5
break;
case 15:
eNB->rb_mask_ul[0] |= (0x1 | (1<<14)); // position 14
break;
case 25:
eNB->rb_mask_ul[0] |= (0x1 | (1<<24)); // position 24
break;
case 50:
eNB->rb_mask_ul[0] |= 0x1;
eNB->rb_mask_ul[1] |= (1<<17); // position 49 (49-32)
break;
case 75:
eNB->rb_mask_ul[0] |= 0x1;
eNB->rb_mask_ul[2] |= (1<<10); // position 74 (74-64)
break;
case 100:
eNB->rb_mask_ul[0] |= 0x1;
eNB->rb_mask_ul[3] |= (1<<3); // position 99 (99-96)
break;
default:
LOG_E(PHY,"Unknown number for N_RB_UL %d\n",fp->N_RB_UL);
break;
}
switch (uci->type) {
case SR:
case HARQ_SR:
metric_SR = rx_pucch(eNB,
uci->pucch_fmt,
i,
uci->n_pucch_1_0_sr[0],
0, // n2_pucch
uci->srs_active, // shortened format
&SR_payload,
frame,
subframe,
PUCCH1_THRES);
LOG_D(PHY,"[eNB %d][SR %x] Frame %d subframe %d Checking SR is %d (SR n1pucch is %d)\n",
eNB->Mod_id,
uci->rnti,
frame,
subframe,
SR_payload,
uci->n_pucch_1_0_sr[0]);
if (uci->type == SR) {
if (SR_payload == 1) {
fill_sr_indication(eNB,uci->rnti,frame,subframe,metric_SR);
return;
}
else {
return;
}
}
case HARQ:
if (fp->frame_type == FDD) {
LOG_D(PHY,"Frame %d Subframe %d Demodulating PUCCH (UCI %d) for ACK/NAK (uci->pucch_fmt %d,uci->type %d.uci->frame %d, uci->subframe %d): n1_pucch0 %d SR_payload %d\n",
frame,subframe,i,
uci->pucch_fmt,uci->type,
uci->frame,uci->subframe,uci->n_pucch_1[0][0],
SR_payload);
metric[0] = rx_pucch(eNB,
uci->pucch_fmt,
i,
uci->n_pucch_1[0][0],
0, //n2_pucch
uci->srs_active, // shortened format
pucch_b0b1[0],
frame,
subframe,
PUCCH1a_THRES);
/* cancel SR detection if reception on n1_pucch0 is better than on SR PUCCH resource index, otherwise send it up to MAC */
if (uci->type==HARQ_SR && metric[0] > metric_SR) SR_payload = 0;
else if (SR_payload == 1) fill_sr_indication(eNB,uci->rnti,frame,subframe,metric_SR);
if (uci->type==HARQ_SR && metric[0] <= metric_SR) {
/* when transmitting ACK/NACK on SR PUCCH resource index, SR payload is always 1 */
SR_payload = 1;
metric[0]=rx_pucch(eNB,
uci->pucch_fmt,
i,
uci->n_pucch_1_0_sr[0],
0, //n2_pucch
uci->srs_active, // shortened format
pucch_b0b1[0],
frame,
subframe,
PUCCH1a_THRES);
}
LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d pucch1a (FDD) payload %d (metric %d)\n",
eNB->Mod_id,
uci->rnti,
frame,subframe,
pucch_b0b1[0][0],metric[0]);
fill_uci_harq_indication(eNB,uci,frame,subframe,pucch_b0b1[0],0,0xffff);
}
else { // frame_type == TDD
// if SR was detected, use the n1_pucch from SR
if (SR_payload==1) {
#ifdef DEBUG_PHY_PROC
LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d Checking ACK/NAK (%d,%d,%d,%d) format %d with SR\n",eNB->Mod_id,
eNB->dlsch[UE_id][0]->rnti,
frame,subframe,
n1_pucch0,n1_pucch1,n1_pucch2,n1_pucch3,format);
#endif
metric[0] = rx_pucch(eNB,
pucch_format1b,
i,
uci->n_pucch_1_0_sr[0],
0, //n2_pucch
uci->srs_active, // shortened format
pucch_b0b1[0],
frame,
subframe,
PUCCH1a_THRES);
} else { //using assigned pucch resources
#ifdef DEBUG_PHY_PROC
LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d Checking ACK/NAK M=%d (%d,%d,%d,%d) format %d\n",eNB->Mod_id,
eNB->dlsch[UE_id][0]->rnti,
frame,subframe,
uci->num_pucch_resources,
uci->n_pucch_1[res][0],
uci->n_pucch_1[res][1],
uci->n_pucch_1[res][2],
uci->n_pucch_1[res][3],
uci->pucch_fmt);
#endif
for (res=0;res<uci->num_pucch_resources;res++)
metric[res] = rx_pucch(eNB,
uci->pucch_fmt,
i,
uci->n_pucch_1[res][0],
0, // n2_pucch
uci->srs_active, // shortened format
pucch_b0b1[res],
frame,
subframe,
PUCCH1a_THRES);
}
if (SR_payload == 1) { // this implements Table 7.3.1 from 36.213
if (pucch_b0b1[0][0] == 4) { // there isn't a likely transmission
harq_ack[0] = 4; // DTX
}
else if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] == 1) { // 1/4/7 ACKs
harq_ack[0] = 1;
}
else if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1) { // 2/5/8 ACKs
harq_ack[0] = 2;
}
else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1) { // 3/6/9 ACKs
harq_ack[0] = 3;
}
else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] != 1) { // 0 ACKs, or at least one DL assignment missed
harq_ack[0] = 0;
}
fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,2,0xffff); // special_bundling mode
}
else if ((uci->tdd_bundling == 0) && (uci->num_pucch_resources==2)){ // multiplexing + no SR, implement Table 10.1.3-5 (Rel14) for multiplexing with M=2
if (pucch_b0b1[0][0] == 4 ||
pucch_b0b1[1][0] == 4) { // there isn't a likely transmission
harq_ack[0] = 4; // DTX
harq_ack[1] = 6; // NACK/DTX
}
else {
if (metric[1]>metric[0]) {
if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 1; // ACK
tdd_multiplexing_mask = 0x3;
}
else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1){
harq_ack[0] = 6; // NACK/DTX
harq_ack[1] = 1; // ACK
tdd_multiplexing_mask = 0x2;
}
else {
harq_ack[0] = 4; // DTX
harq_ack[1] = 4; // DTX
}
}
else {
if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] == 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 6; // NACK/DTX
tdd_multiplexing_mask = 0x1;
}
else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] != 1){
harq_ack[0] = 2; // NACK
harq_ack[1] = 6; // NACK/DTX
}
else {
harq_ack[0] = 4; // DTX
harq_ack[1] = 4; // DTX
}
}
}
fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,1,tdd_multiplexing_mask); // multiplexing mode
} //else if ((uci->tdd_bundling == 0) && (res==2))
else if ((uci->tdd_bundling == 0) && (uci->num_pucch_resources==3)){ // multiplexing + no SR, implement Table 10.1.3-6 (Rel14) for multiplexing with M=3
if (harq_ack[0] == 4 ||
harq_ack[1] == 4 ||
harq_ack[2] == 4) { // there isn't a likely transmission
harq_ack[0] = 4; // DTX
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 6; // NACK/DTX
}
else {
max_metric = max(metric[0],max(metric[1],metric[2]));
if (metric[0]==max_metric) {
if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] == 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 6; // NACK/DTX
tdd_multiplexing_mask = 0x1;
}
else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] != 1){
harq_ack[0] = 2; // NACK
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 6; // NACK/DTX
}
else {
harq_ack[0] = 4; // DTX
harq_ack[1] = 4; // DTX
harq_ack[2] = 4; // DTX
}
} // if (metric[0]==max_metric) {
else if (metric[1]==max_metric) {
if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 1; // ACK
harq_ack[2] = 6; // NACK/DTX
tdd_multiplexing_mask = 0x3;
}
else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1 ) {
harq_ack[0] = 6; // NACK/DTX
harq_ack[1] = 1; // ACK
harq_ack[2] = 6; // NACK/DTX
tdd_multiplexing_mask = 0x2;
}
else {
harq_ack[0] = 4; // DTX
harq_ack[1] = 4; // DTX
harq_ack[2] = 4; // DTX
}
} // if (metric[1]==max_metric) {
else {
if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] == 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 1; // ACK
harq_ack[2] = 1; // ACK
tdd_multiplexing_mask = 0x7;
}
else if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] != 1 ) {
harq_ack[0] = 1; // ACK
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 1; // ACK
tdd_multiplexing_mask = 0x5;
}
else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] == 1 ) {
harq_ack[0] = 6; // NACK/DTX
harq_ack[1] = 1; // ACK
harq_ack[2] = 1; // ACK
tdd_multiplexing_mask = 0x6;
}
else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] != 1 ) {
harq_ack[0] = 6; // NACK/DTX
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 1; // ACK
tdd_multiplexing_mask = 0x4;
}
}
}
fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,1,tdd_multiplexing_mask); // multiplexing mode
} //else if ((uci->tdd_bundling == 0) && (res==3))
else if ((uci->tdd_bundling == 0) && (uci->num_pucch_resources==4)){ // multiplexing + no SR, implement Table 10.1.3-7 (Rel14) for multiplexing with M=4
if (pucch_b0b1[0][0] == 4 ||
pucch_b0b1[1][0] == 4 ||
pucch_b0b1[2][0] == 4 ||
pucch_b0b1[3][0] == 4) { // there isn't a likely transmission
harq_ack[0] = 4; // DTX
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 6; // NACK/DTX
harq_ack[3] = 6; // NACK/DTX
} else {
max_metric = max(metric[0],max(metric[1],max(metric[2],metric[3])));
if (metric[0]==max_metric) {
if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] != 1){
harq_ack[0] = 2; // NACK
harq_ack[1] = 4; // DTX
harq_ack[2] = 4; // DTX
harq_ack[3] = 4; // DTX
}
else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] == 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 6; // NACK/DTX
harq_ack[3] = 1; // ACK
tdd_multiplexing_mask = 0x9;
}
else if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] == 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 6; // NACK/DTX
harq_ack[3] = 6; // NACK/DTX
tdd_multiplexing_mask = 0x1;
}
else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] != 1){
harq_ack[0] = 2; // NACK
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 6; // NACK/DTX
harq_ack[3] = 6; // NACK/DTX
}
}
else if (metric[1]==max_metric) {
if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] == 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 1; // ACK
harq_ack[2] = 1; // ACK
harq_ack[3] = 1; // ACK
tdd_multiplexing_mask = 0xF;
}
else if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1 ) {
harq_ack[0] = 1; // ACK
harq_ack[1] = 1; // ACK
harq_ack[2] = 6; // NACK/DTX
harq_ack[3] = 6; // NACK/DTX
tdd_multiplexing_mask = 0x3;
}
else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] != 1 ) {
harq_ack[0] = 6; // NACK/DTX
harq_ack[1] = 1; // ACK
harq_ack[2] = 1; // ACK
harq_ack[3] = 1; // ACK
tdd_multiplexing_mask = 0xE;
}
else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1 ) {
harq_ack[0] = 6; // NACK/DTX
harq_ack[1] = 1; // ACK
harq_ack[2] = 6; // NACK/DTX
harq_ack[3] = 6; // NACK/DTX
tdd_multiplexing_mask = 0x2;
}
}
else if (metric[2]==max_metric) {
if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] == 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 1; // ACK
harq_ack[2] = 1; // ACK
harq_ack[3] = 6; // NACK/DTX
tdd_multiplexing_mask = 0x7;
}
else if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] != 1 ) {
harq_ack[0] = 1; // ACK
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 1; // ACK
harq_ack[3] = 6; // NACK/DTX
tdd_multiplexing_mask = 0x5;
}
else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] == 1 ) {
harq_ack[0] = 4; // NACK/DTX
harq_ack[1] = 1; // ACK
harq_ack[2] = 1; // ACK
harq_ack[3] = 4; // NACK/DTX
tdd_multiplexing_mask = 0x6;
}
else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] != 1 ) {
harq_ack[0] = 4; // NACK/DTX
harq_ack[1] = 4; // NACK/DTX
harq_ack[2] = 1; // ACK
harq_ack[3] = 4; // NACK/DTX
tdd_multiplexing_mask = 0x4;
}
}
else { // max_metric[3]=max_metric
if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] == 1){
harq_ack[0] = 1; // ACK
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 1; // ACK
harq_ack[3] = 1; // ACK
tdd_multiplexing_mask = 0xD;
}
else if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] != 1 ) {
harq_ack[0] = 6; // NACK/DTX
harq_ack[1] = 1; // ACK
harq_ack[2] = 6; // NACK/DTX
harq_ack[3] = 1; // ACK
tdd_multiplexing_mask = 0xA;
}
else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] == 1 ) {
harq_ack[0] = 6; // NACK/DTX
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 1; // ACK
harq_ack[3] = 1; // ACK
tdd_multiplexing_mask = 0xC;
}
else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] != 1 ) {
harq_ack[0] = 6; // NACK/DTX
harq_ack[1] = 6; // NACK/DTX
harq_ack[2] = 6; // NACK/DTX
harq_ack[3] = 1; // ACK
tdd_multiplexing_mask = 0x8;
}
}
}
fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,1,tdd_multiplexing_mask); // multiplexing mode
} // else if ((uci->tdd_bundling == 0) && (res==4))
else { // bundling
harq_ack[0] = pucch_b0b1[0][0];
harq_ack[1] = pucch_b0b1[0][1];
fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,0,0xffff); // special_bundling mode
}
#ifdef DEBUG_PHY_PROC
LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d ACK/NAK metric 0 %d, metric 1 %d, (%d,%d)\n",eNB->Mod_id,
eNB->dlsch[UE_id][0]->rnti,
frame,subframe,
metric0,metric1,pucch_b0b1[0],pucch_b0b1[1]);
#endif
}
break;
default:
AssertFatal(1==0,"Unsupported UCI type %d\n",uci->type);
break;
}
if (SR_payload == 1) {
LOG_D(PHY,"[eNB %d][SR %x] Frame %d subframe %d Got SR for PUSCH, transmitting to MAC\n",eNB->Mod_id,
uci->rnti,frame,subframe);
if (eNB->first_sr[i] == 1) { // this is the first request for uplink after Connection Setup, so clear HARQ process 0 use for Msg4
eNB->first_sr[i] = 0;
eNB->dlsch[i][0]->harq_processes[0]->round=0;
eNB->dlsch[i][0]->harq_processes[0]->status=SCH_IDLE;
LOG_D(PHY,"[eNB %d][SR %x] Frame %d subframe %d First SR\n",
eNB->Mod_id,
eNB->ulsch[i]->rnti,frame,subframe);
}
}
}
}
}
void pusch_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc) {
uint32_t ret=0,i;
uint32_t harq_pid;
uint8_t nPRS;
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
LTE_eNB_ULSCH_t *ulsch;
LTE_UL_eNB_HARQ_t *ulsch_harq;
const int subframe = proc->subframe_rx;
const int frame = proc->frame_rx;
if (fp->frame_type == FDD) harq_pid = ((10*frame) + subframe)&7;
else harq_pid = subframe%10;
for (i=0; i<NUMBER_OF_UE_MAX; i++) {
ulsch = eNB->ulsch[i];
ulsch_harq = ulsch->harq_processes[harq_pid];
if (ulsch->rnti>0) LOG_D(PHY,"Frame %d, subframe %d: PUSCH procedures, harq_pid %d, UE %d/%x\n",
frame,subframe,harq_pid,i,ulsch->rnti);
if ((ulsch) &&
(ulsch->rnti>0) &&
(ulsch_harq->status == ACTIVE) &&
(ulsch_harq->frame == frame) &&
(ulsch_harq->subframe == subframe) &&
(ulsch_harq->handled == 0)) {
// UE has ULSCH scheduling
for (int rb=0;
rb<=ulsch_harq->nb_rb;
rb++) {
int rb2 = rb+ulsch_harq->first_rb;
eNB->rb_mask_ul[rb2>>5] |= (1<<(rb2&31));
}
LOG_D(PHY,"[eNB %d] frame %d, subframe %d: Scheduling ULSCH Reception for UE %d \n",
eNB->Mod_id,
frame,
subframe,
i);
nPRS = fp->pusch_config_common.ul_ReferenceSignalsPUSCH.nPRS[subframe<<1];
ulsch->cyclicShift = (ulsch_harq->n_DMRS2 +
fp->pusch_config_common.ul_ReferenceSignalsPUSCH.cyclicShift +
nPRS)%12;
LOG_D(PHY,
"[eNB %d][PUSCH %d] Frame %d Subframe %d Demodulating PUSCH: dci_alloc %d, rar_alloc %d, round %d, first_rb %d, nb_rb %d, Qm %d, TBS %d, rv %d, cyclic_shift %d (n_DMRS2 %d, cyclicShift_common %d, nprs %d), O_ACK %d, beta_cqi %d \n",
eNB->Mod_id,harq_pid,frame,subframe,
ulsch_harq->dci_alloc,
ulsch_harq->rar_alloc,
ulsch_harq->round,
ulsch_harq->first_rb,
ulsch_harq->nb_rb,
ulsch_harq->Qm,
ulsch_harq->TBS,
ulsch_harq->rvidx,
ulsch->cyclicShift,
ulsch_harq->n_DMRS2,
fp->pusch_config_common.ul_ReferenceSignalsPUSCH.cyclicShift,
nPRS,
ulsch_harq->O_ACK,
ulsch->beta_offset_cqi_times8);
start_meas(&eNB->ulsch_demodulation_stats);
rx_ulsch(eNB,proc,
i);
stop_meas(&eNB->ulsch_demodulation_stats);
start_meas(&eNB->ulsch_decoding_stats);
ret = ulsch_decoding(eNB,proc,
i,
0, // control_only_flag
ulsch_harq->V_UL_DAI,
ulsch_harq->nb_rb>20 ? 1 : 0);
stop_meas(&eNB->ulsch_decoding_stats);
LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d RNTI %x RX power (%d,%d) N0 (%d,%d) dB ACK (%d,%d), decoding iter %d\n",
eNB->Mod_id,harq_pid,
frame,subframe,
ulsch->rnti,
dB_fixed(eNB->pusch_vars[i]->ulsch_power[0]),
dB_fixed(eNB->pusch_vars[i]->ulsch_power[1]),
20,//eNB->measurements.n0_power_dB[0],
20,//eNB->measurements.n0_power_dB[1],
ulsch_harq->o_ACK[0],
ulsch_harq->o_ACK[1],
ret);
//compute the expected ULSCH RX power (for the stats)
ulsch_harq->delta_TF = get_hundred_times_delta_IF_eNB(eNB,i,harq_pid, 0); // 0 means bw_factor is not considered
if (ulsch_harq->cqi_crc_status == 1) {
#ifdef DEBUG_PHY_PROC
//if (((frame%10) == 0) || (frame < 50))
print_CQI(ulsch_harq->o,ulsch_harq->uci_format,0,fp->N_RB_DL);
#endif
fill_ulsch_cqi_indication(eNB,frame,subframe,
ulsch_harq,
ulsch->rnti);
}
if (ret == (1+MAX_TURBO_ITERATIONS)) {
T(T_ENB_PHY_ULSCH_UE_NACK, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe), T_INT(ulsch->rnti),
T_INT(harq_pid));
fill_crc_indication(eNB,i,frame,subframe,1); // indicate NAK to MAC
fill_rx_indication(eNB,i,frame,subframe); // indicate SDU to MAC
LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d UE %d Error receiving ULSCH, round %d/%d (ACK %d,%d)\n",
eNB->Mod_id,harq_pid,
frame,subframe, i,
ulsch_harq->round-1,
ulsch->Mlimit,
ulsch_harq->o_ACK[0],
ulsch_harq->o_ACK[1]);
/*if (dB_fixed_times10(eNB->pusch_vars[i]->ulsch_power[0]) > 300) {
dump_ulsch(eNB,frame,subframe,i); exit(-1);
}
*/
#if defined(MESSAGE_CHART_GENERATOR_PHY)
MSC_LOG_RX_DISCARDED_MESSAGE(
MSC_PHY_ENB,MSC_PHY_UE,
NULL,0,
"%05u:%02u ULSCH received rnti %x harq id %u round %d",
frame,subframe,
ulsch->rnti,harq_pid,
ulsch_harq->round-1
);
#endif
} // ulsch in error
else {
fill_crc_indication(eNB,i,frame,subframe,0); // indicate ACK to MAC
fill_rx_indication(eNB,i,frame,subframe); // indicate SDU to MAC
T(T_ENB_PHY_ULSCH_UE_ACK, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe), T_INT(ulsch->rnti),
T_INT(harq_pid));
ulsch_harq->status = SCH_IDLE;
#if defined(MESSAGE_CHART_GENERATOR_PHY)
MSC_LOG_RX_MESSAGE(
MSC_PHY_ENB,MSC_PHY_UE,
NULL,0,
"%05u:%02u ULSCH received rnti %x harq id %u",
frame,subframe,
ulsch->rnti,harq_pid
);
#endif
#ifdef DEBUG_PHY_PROC
#ifdef DEBUG_ULSCH
LOG_D(PHY,"[eNB] Frame %d, Subframe %d : ULSCH SDU (RX harq_pid %d) %d bytes:",frame,subframe,
harq_pid,ulsch_harq->TBS>>3);
for (j=0; j<ulsch_harq->TBS>>3; j++)
LOG_T(PHY,"%x.",ulsch->harq_processes[harq_pid]->b[j]);
LOG_T(PHY,"\n");
#endif
#endif
} // ulsch not in error
if (ulsch_harq->O_ACK>0) fill_ulsch_harq_indication(eNB,ulsch_harq,ulsch->rnti,frame,subframe,ulsch->bundling);
LOG_D(PHY,"[eNB %d] Frame %d subframe %d: received ULSCH harq_pid %d for UE %d, ret = %d, CQI CRC Status %d, ACK %d,%d, ulsch_errors %d/%d\n",
eNB->Mod_id,frame,subframe,
harq_pid,
i,
ret,
ulsch_harq->cqi_crc_status,
ulsch_harq->o_ACK[0],
ulsch_harq->o_ACK[1],
eNB->UE_stats[i].ulsch_errors[harq_pid],
eNB->UE_stats[i].ulsch_decoding_attempts[harq_pid][0]);
ulsch_harq->handled = 1;
} // if ((ulsch) &&
// (ulsch->rnti>0) &&
// (ulsch_harq->status == ACTIVE))
else if ((ulsch) &&
(ulsch->rnti>0) &&
(ulsch_harq->status == ACTIVE) &&
(ulsch_harq->frame == frame) &&
(ulsch_harq->subframe == subframe) &&
(ulsch_harq->handled == 1)) {
// this harq process is stale, kill it, this 1024 frames later (10s), consider reducing that
ulsch_harq->status = SCH_IDLE;
ulsch->harq_mask = 0;
LOG_W(PHY,"Removing stale ULSCH config for UE %x\n",ulsch->rnti);
}
} // for (i=0; i<NUMBER_OF_UE_MAX; i++) {
}
extern int oai_exit;
extern void *td_thread(void*);
void init_td_thread(PHY_VARS_eNB *eNB,pthread_attr_t *attr_td) {
eNB_proc_t *proc = &eNB->proc;
proc->tdp.eNB = eNB;
proc->instance_cnt_td = -1;
pthread_mutex_init( &proc->mutex_td, NULL);
pthread_cond_init( &proc->cond_td, NULL);
pthread_create(&proc->pthread_td, attr_td, td_thread, (void*)&proc->tdp);
}
extern void *te_thread(void*);
void init_te_thread(PHY_VARS_eNB *eNB,pthread_attr_t *attr_te) {
eNB_proc_t *proc = &eNB->proc;
proc->tep.eNB = eNB;
proc->instance_cnt_te = -1;
pthread_mutex_init( &proc->mutex_te, NULL);
pthread_cond_init( &proc->cond_te, NULL);
printf("Creating te_thread\n");
pthread_create(&proc->pthread_te, attr_te, te_thread, (void*)&proc->tep);
}
void fill_rx_indication(PHY_VARS_eNB *eNB,int UE_id,int frame,int subframe)
{
nfapi_rx_indication_pdu_t *pdu;
int timing_advance_update;
int sync_pos;
uint32_t harq_pid = subframe2harq_pid(&eNB->frame_parms,
frame,subframe);
pthread_mutex_lock(&eNB->UL_INFO_mutex);
pdu = &eNB->UL_INFO.rx_ind.rx_pdu_list[eNB->UL_INFO.rx_ind.number_of_pdus];
// pdu->rx_ue_information.handle = eNB->ulsch[UE_id]->handle;
pdu->rx_ue_information.rnti = eNB->ulsch[UE_id]->rnti;
pdu->rx_indication_rel8.length = eNB->ulsch[UE_id]->harq_processes[harq_pid]->TBS>>3;
pdu->rx_indication_rel8.offset = 0; // filled in at the end of the UL_INFO formation
pdu->data = eNB->ulsch[UE_id]->harq_processes[harq_pid]->b;
// estimate timing advance for MAC
sync_pos = lte_est_timing_advance_pusch(eNB,UE_id);
timing_advance_update = sync_pos - eNB->frame_parms.nb_prefix_samples/4; //to check
// if (timing_advance_update > 10) { dump_ulsch(eNB,frame,subframe,UE_id); exit(-1);}
// if (timing_advance_update < -10) { dump_ulsch(eNB,frame,subframe,UE_id); exit(-1);}
switch (eNB->frame_parms.N_RB_DL) {
case 6: /* nothing to do */ break;
case 15: timing_advance_update /= 2; break;
case 25: timing_advance_update /= 4; break;
case 50: timing_advance_update /= 8; break;
case 75: timing_advance_update /= 12; break;
case 100: timing_advance_update /= 16; break;
default: abort();
}
// put timing advance command in 0..63 range
timing_advance_update += 31;
if (timing_advance_update < 0) timing_advance_update = 0;
if (timing_advance_update > 63) timing_advance_update = 63;
pdu->rx_indication_rel8.timing_advance = timing_advance_update;
// estimate UL_CQI for MAC (from antenna port 0 only)
int SNRtimes10 = dB_fixed_times10(eNB->pusch_vars[UE_id]->ulsch_power[0]) - 200;//(10*eNB->measurements.n0_power_dB[0]);
if (SNRtimes10 < -640) pdu->rx_indication_rel8.ul_cqi=0;
else if (SNRtimes10 > 635) pdu->rx_indication_rel8.ul_cqi=255;
else pdu->rx_indication_rel8.ul_cqi=(640+SNRtimes10)/5;
LOG_D(PHY,"[PUSCH %d] Filling RX_indication with SNR %d (%d), timing_advance %d (update %d)\n",
harq_pid,SNRtimes10,pdu->rx_indication_rel8.ul_cqi,pdu->rx_indication_rel8.timing_advance,
timing_advance_update);
eNB->UL_INFO.rx_ind.number_of_pdus++;
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}
void release_harq(PHY_VARS_eNB *eNB,int UE_id,int tb,uint16_t frame,uint8_t subframe,uint16_t mask) {
LTE_eNB_DLSCH_t *dlsch0=NULL,*dlsch1=NULL;
LTE_DL_eNB_HARQ_t *dlsch0_harq=NULL,*dlsch1_harq=NULL;
int harq_pid;
int subframe_tx;
int M,m;
AssertFatal(UE_id!=-1,"no existing dlsch context\n");
AssertFatal(UE_id<NUMBER_OF_UE_MAX,"returned UE_id %d >= %d(NUMBER_OF_UE_MAX)\n",UE_id,NUMBER_OF_UE_MAX);
dlsch0 = eNB->dlsch[UE_id][0];
dlsch1 = eNB->dlsch[UE_id][1];
if (eNB->frame_parms.frame_type == FDD) {
subframe_tx = (subframe+6)%10;
harq_pid = dlsch0->harq_ids[subframe_tx];
AssertFatal((harq_pid>=0) && (harq_pid<10),"harq_pid %d not in 0...9\n",harq_pid);
dlsch0_harq = dlsch0->harq_processes[harq_pid];
dlsch1_harq = dlsch1->harq_processes[harq_pid];
AssertFatal(dlsch0_harq!=NULL,"dlsch0_harq is null\n");
dlsch0_harq->status = SCH_IDLE;
/*if ((dlsch1_harq == NULL)||
((dlsch1_harq!=NULL)&&
(dlsch1_harq->status == SCH_IDLE)))*/
dlsch0->harq_mask &= ~(1<<harq_pid);
LOG_D(PHY,"Frame %d, subframe %d: Releasing harq %d for UE %x\n",frame,subframe,harq_pid,dlsch0->rnti);
}
else { // release all processes in the bundle that was acked, based on mask
// This is at most 4 for multiplexing and 9 for bundling/special bundling
M=ul_ACK_subframe2_M(&eNB->frame_parms,
subframe);
for (m=0; m<M; m++) {
subframe_tx = ul_ACK_subframe2_dl_subframe(&eNB->frame_parms,
subframe,
m);
if (((1<<m)&mask) > 0) {
harq_pid = dlsch0->harq_ids[subframe_tx];
if ((harq_pid>=0) && (harq_pid<10)) {
dlsch0_harq = dlsch0->harq_processes[harq_pid];
dlsch1_harq = dlsch1->harq_processes[harq_pid];
AssertFatal(dlsch0_harq!=NULL,"dlsch0_harq is null\n");
dlsch0_harq->status = SCH_IDLE;
if ((dlsch1_harq == NULL)||
((dlsch1_harq!=NULL)&&
(dlsch1_harq->status == SCH_IDLE)))
dlsch0->harq_mask &= ~(1<<harq_pid);
}
}
}
}
}
int getM(PHY_VARS_eNB *eNB,int frame,int subframe) {
int M,Mtx=0;
LTE_eNB_DLSCH_t *dlsch0=NULL,*dlsch1=NULL;
LTE_DL_eNB_HARQ_t *dlsch0_harq=NULL,*dlsch1_harq=NULL;
int harq_pid;
int subframe_tx;
int m;
M=ul_ACK_subframe2_M(&eNB->frame_parms,
subframe);
for (m=0; m<M; m++) {
subframe_tx = ul_ACK_subframe2_dl_subframe(&eNB->frame_parms,
subframe,
m);
harq_pid = dlsch0->harq_ids[subframe_tx];
if (harq_pid>=0 && harq_pid<10) {
dlsch0_harq = dlsch0->harq_processes[harq_pid];
dlsch1_harq = dlsch1->harq_processes[harq_pid];
AssertFatal(dlsch0_harq!=NULL,"dlsch0_harq is null\n");
if (dlsch0_harq->status == ACTIVE||
(dlsch1_harq!=NULL && dlsch1_harq->status == ACTIVE)) Mtx ++;
}
}
return(Mtx);
}
void fill_ulsch_cqi_indication(PHY_VARS_eNB *eNB,uint16_t frame,uint8_t subframe,LTE_UL_eNB_HARQ_t *ulsch_harq,uint16_t rnti) {
pthread_mutex_lock(&eNB->UL_INFO_mutex);
nfapi_cqi_indication_pdu_t *pdu = &eNB->UL_INFO.cqi_ind.cqi_pdu_list[eNB->UL_INFO.cqi_ind.number_of_cqis];
nfapi_cqi_indication_raw_pdu_t *raw_pdu = &eNB->UL_INFO.cqi_ind.cqi_raw_pdu_list[eNB->UL_INFO.cqi_ind.number_of_cqis];
pdu->rx_ue_information.rnti = rnti;
if (ulsch_harq->cqi_crc_status != 1) pdu->cqi_indication_rel9.data_offset = 0;
else pdu->cqi_indication_rel9.data_offset = 1; // fill in after all cqi_indications have been generated when non-zero
// by default set O to rank 1 value
pdu->cqi_indication_rel9.length = (ulsch_harq->Or1>>3) + ((ulsch_harq->Or1&7) > 0 ? 1 : 0);
pdu->cqi_indication_rel9.ri[0] = 0;
// if we have RI bits, set them and if rank2 overwrite O
if (ulsch_harq->O_RI>0) {
pdu->cqi_indication_rel9.ri[0] = ulsch_harq->o_RI[0];
if (ulsch_harq->o_RI[0] == 2) pdu->cqi_indication_rel9.length = (ulsch_harq->Or2>>3) + ((ulsch_harq->Or2&7) > 0 ? 1 : 0);
pdu->cqi_indication_rel9.timing_advance = 0;
}
pdu->cqi_indication_rel9.number_of_cc_reported = 1;
pdu->ul_cqi_information.channel = 1; // PUSCH
memcpy((void*)raw_pdu->pdu,ulsch_harq->o,pdu->cqi_indication_rel9.length);
eNB->UL_INFO.cqi_ind.number_of_cqis++;
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}
void fill_ulsch_harq_indication(PHY_VARS_eNB *eNB,LTE_UL_eNB_HARQ_t *ulsch_harq,uint16_t rnti, int frame,int subframe,int bundling)
{
int UE_id = find_dlsch(rnti,eNB,SEARCH_EXIST);
AssertFatal(UE_id>=0,"UE_id doesn't exist\n");
pthread_mutex_lock(&eNB->UL_INFO_mutex);
nfapi_harq_indication_pdu_t *pdu = &eNB->UL_INFO.harq_ind.harq_pdu_list[eNB->UL_INFO.harq_ind.number_of_harqs];
int M;
int i;
pdu->instance_length = 0; // don't know what to do with this
// pdu->rx_ue_information.handle = handle;
pdu->rx_ue_information.rnti = rnti;
if (eNB->frame_parms.frame_type == FDD) {
pdu->harq_indication_fdd_rel13.mode = 0;
pdu->harq_indication_fdd_rel13.number_of_ack_nack = ulsch_harq->O_ACK;
for (i=0;i<ulsch_harq->O_ACK;i++) {
AssertFatal(ulsch_harq->o_ACK[i] == 0 || ulsch_harq->o_ACK[i] == 1, "harq_ack[%d] is %d, should be 1,2 or 4\n",i,ulsch_harq->o_ACK[i]);
pdu->harq_indication_fdd_rel13.harq_tb_n[i] = 2-ulsch_harq->o_ACK[i];
// release DLSCH if needed
if (ulsch_harq->o_ACK[i] == 1) release_harq(eNB,UE_id,i,frame,subframe,0xffff);
#if T_TRACER
/* TODO: get correct harq pid */
if (ulsch_harq->o_ACK[i] != 1)
T(T_ENB_PHY_DLSCH_UE_NACK, T_INT(0), T_INT(frame), T_INT(subframe),
T_INT(rnti), T_INT(eNB->dlsch[UE_id][0]->harq_ids[(subframe+6)%10]));
else
T(T_ENB_PHY_DLSCH_UE_ACK, T_INT(0), T_INT(frame), T_INT(subframe),
T_INT(rnti), T_INT(eNB->dlsch[UE_id][0]->harq_ids[(subframe+6)%10]));
#endif
}
}
else { // TDD
M=ul_ACK_subframe2_M(&eNB->frame_parms,
subframe);
pdu->harq_indication_fdd_rel13.mode = 1-bundling;
pdu->harq_indication_fdd_rel13.number_of_ack_nack = ulsch_harq->O_ACK;
for (i=0;i<ulsch_harq->O_ACK;i++) {
AssertFatal(ulsch_harq->o_ACK[i] == 0 || ulsch_harq->o_ACK[i] == 1, "harq_ack[%d] is %d, should be 1,2 or 4\n",i,ulsch_harq->o_ACK[i]);
pdu->harq_indication_tdd_rel13.harq_data[0].multiplex.value_0 = 2-ulsch_harq->o_ACK[i];
// release DLSCH if needed
if (ulsch_harq->o_ACK[i] == 1) release_harq(eNB,UE_id,i,frame,subframe,0xffff);
if (M==1 && ulsch_harq->O_ACK==1 && ulsch_harq->o_ACK[i] == 1) release_harq(eNB,UE_id,0,frame,subframe,0xffff);
else if (M==1 && ulsch_harq->O_ACK==2 && ulsch_harq->o_ACK[i] == 1) release_harq(eNB,UE_id,i,frame,subframe,0xffff);
else if (M>1 && ulsch_harq->o_ACK[i] == 1) {
// spatial bundling
release_harq(eNB,UE_id,0,frame,subframe,1<<i);
release_harq(eNB,UE_id,1,frame,subframe,1<<i);
}
}
}
eNB->UL_INFO.harq_ind.number_of_harqs++;
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}
void fill_uci_harq_indication(PHY_VARS_eNB *eNB,
LTE_eNB_UCI *uci,
int frame,
int subframe,
uint8_t *harq_ack,
uint8_t tdd_mapping_mode,
uint16_t tdd_multiplexing_mask) {
int UE_id=find_dlsch(uci->rnti,eNB,SEARCH_EXIST);
pthread_mutex_lock(&eNB->UL_INFO_mutex);
nfapi_harq_indication_pdu_t *pdu = &eNB->UL_INFO.harq_ind.harq_pdu_list[eNB->UL_INFO.harq_ind.number_of_harqs];
pdu->instance_length = 0; // don't know what to do with this
// pdu->rx_ue_information.handle = handle;
pdu->rx_ue_information.rnti = uci->rnti;
// estimate UL_CQI for MAC (from antenna port 0 only)
int SNRtimes10 = dB_fixed_times10(uci->stat) - 200;//(10*eNB->measurements.n0_power_dB[0]);
if (SNRtimes10 < -640) pdu->ul_cqi_information.ul_cqi=0;
else if (SNRtimes10 > 635) pdu->ul_cqi_information.ul_cqi=255;
else pdu->ul_cqi_information.ul_cqi=(640+SNRtimes10)/5;
pdu->ul_cqi_information.channel = 0;
if (eNB->frame_parms.frame_type == FDD) {
if (uci->pucch_fmt == pucch_format1a) {
pdu->harq_indication_fdd_rel13.mode = 0;
pdu->harq_indication_fdd_rel13.number_of_ack_nack = 1;
AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[0] == 4, "harq_ack[0] is %d, should be 1,2 or 4\n",harq_ack[0]);
pdu->harq_indication_fdd_rel13.harq_tb_n[0] = harq_ack[0];
// release DLSCH if needed
if (harq_ack[0] == 1) release_harq(eNB,UE_id,0,frame,subframe,0xffff);
#if T_TRACER
if (harq_ack[0] != 1)
T(T_ENB_PHY_DLSCH_UE_NACK, T_INT(0), T_INT(frame), T_INT(subframe),
T_INT(uci->rnti), T_INT(eNB->dlsch[UE_id][0]->harq_ids[(subframe+6)%10]));
else
T(T_ENB_PHY_DLSCH_UE_ACK, T_INT(0), T_INT(frame), T_INT(subframe),
T_INT(uci->rnti), T_INT(eNB->dlsch[UE_id][0]->harq_ids[(subframe+6)%10]));
#endif
}
else if (uci->pucch_fmt == pucch_format1b) {
pdu->harq_indication_fdd_rel13.mode = 0;
pdu->harq_indication_fdd_rel13.number_of_ack_nack = 2;
AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[1] == 4, "harq_ack[0] is %d, should be 0,1 or 4\n",harq_ack[0]);
AssertFatal(harq_ack[1] == 1 || harq_ack[1] == 2 || harq_ack[1] == 4, "harq_ack[1] is %d, should be 0,1 or 4\n",harq_ack[1]);
pdu->harq_indication_fdd_rel13.harq_tb_n[0] = harq_ack[0];
pdu->harq_indication_fdd_rel13.harq_tb_n[1] = harq_ack[1];
// release DLSCH if needed
if (harq_ack[0] == 1) release_harq(eNB,UE_id,0,frame,subframe,0xffff);
if (harq_ack[1] == 1) release_harq(eNB,UE_id,1,frame,subframe,0xffff);
}
else AssertFatal(1==0,"only format 1a/b for now, received %d\n",uci->pucch_fmt);
}
else { // TDD
AssertFatal(tdd_mapping_mode==0 || tdd_mapping_mode==1 || tdd_mapping_mode==2,
"Illegal tdd_mapping_mode %d\n",tdd_mapping_mode);
pdu->harq_indication_tdd_rel13.mode = tdd_mapping_mode;
switch (tdd_mapping_mode) {
case 0: // bundling
if (uci->pucch_fmt == pucch_format1a) {
pdu->harq_indication_tdd_rel13.number_of_ack_nack = 1;
AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[0] == 4, "harq_ack[0] is %d, should be 1,2 or 4\n",harq_ack[0]);
pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = harq_ack[0];
// release all bundled DLSCH if needed
if (harq_ack[0] == 1) release_harq(eNB,UE_id,0,frame,subframe,0xffff);
}
else if (uci->pucch_fmt == pucch_format1b) {
pdu->harq_indication_tdd_rel13.number_of_ack_nack = 2;
AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[1] == 4, "harq_ack[0] is %d, should be 0,1 or 4\n",harq_ack[0]);
AssertFatal(harq_ack[1] == 1 || harq_ack[1] == 2 || harq_ack[1] == 4, "harq_ack[1] is %d, should be 0,1 or 4\n",harq_ack[1]);
pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = harq_ack[0];
pdu->harq_indication_tdd_rel13.harq_data[1].bundling.value_0 = harq_ack[1];
// release all DLSCH if needed
if (harq_ack[0] == 1) release_harq(eNB,UE_id,0,frame,subframe,0xffff);
if (harq_ack[1] == 1) release_harq(eNB,UE_id,1,frame,subframe,0xffff);
}
break;
case 1: // multiplexing
AssertFatal(uci->pucch_fmt == pucch_format1b,"uci->pucch_format %d is not format1b\n",uci->pucch_fmt);
if (uci->num_pucch_resources == 1 && uci->pucch_fmt == pucch_format1a) {
pdu->harq_indication_tdd_rel13.number_of_ack_nack = 1;
AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[0] == 4, "harq_ack[0] is %d, should be 1,2 or 4\n",harq_ack[0]);
pdu->harq_indication_tdd_rel13.harq_data[0].multiplex.value_0 = harq_ack[0];
// release all DLSCH if needed
if (harq_ack[0] == 1) release_harq(eNB,UE_id,0,frame,subframe,0xffff);
}
else if (uci->num_pucch_resources == 1 && uci->pucch_fmt == pucch_format1b) {
pdu->harq_indication_tdd_rel13.number_of_ack_nack = 2;
AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[1] == 4, "harq_ack[0] is %d, should be 0,1 or 4\n",harq_ack[0]);
AssertFatal(harq_ack[1] == 1 || harq_ack[1] == 2 || harq_ack[1] == 4, "harq_ack[1] is %d, should be 0,1 or 4\n",harq_ack[1]);
pdu->harq_indication_tdd_rel13.harq_data[0].multiplex.value_0 = harq_ack[0];
pdu->harq_indication_tdd_rel13.harq_data[1].multiplex.value_0 = harq_ack[1];
// release all DLSCH if needed
if (harq_ack[0] == 1) release_harq(eNB,UE_id,0,frame,subframe,0xffff);
if (harq_ack[1] == 1) release_harq(eNB,UE_id,1,frame,subframe,0xffff);
}
else { // num_pucch_resources (M) > 1
pdu->harq_indication_tdd_rel13.number_of_ack_nack = uci->num_pucch_resources;
pdu->harq_indication_tdd_rel13.harq_data[0].multiplex.value_0 = harq_ack[0];
pdu->harq_indication_tdd_rel13.harq_data[1].multiplex.value_0 = harq_ack[1];
if (uci->num_pucch_resources == 3) pdu->harq_indication_tdd_rel13.harq_data[2].multiplex.value_0 = harq_ack[2];
if (uci->num_pucch_resources == 4) pdu->harq_indication_tdd_rel13.harq_data[3].multiplex.value_0 = harq_ack[3];
// spatial-bundling in this case so release both HARQ if necessary
release_harq(eNB,UE_id,0,frame,subframe,tdd_multiplexing_mask);
release_harq(eNB,UE_id,1,frame,subframe,tdd_multiplexing_mask);
}
break;
case 2: // special bundling (SR collision)
pdu->harq_indication_tdd_rel13.number_of_ack_nack = 1;
int tdd_config5_sf2scheds=0;
if (eNB->frame_parms.tdd_config==5) tdd_config5_sf2scheds = getM(eNB,frame,subframe);
switch (harq_ack[0]) {
case 0:
break;
case 1: // check if M=1,4,7
if (uci->num_pucch_resources == 1 || uci->num_pucch_resources == 4 ||
tdd_config5_sf2scheds == 1 || tdd_config5_sf2scheds == 4 || tdd_config5_sf2scheds == 7) {
release_harq(eNB,UE_id,0,frame,subframe,0xffff);
release_harq(eNB,UE_id,1,frame,subframe,0xffff);
}
break;
case 2: // check if M=2,5,8
if (uci->num_pucch_resources == 2 || tdd_config5_sf2scheds == 2 ||
tdd_config5_sf2scheds == 5 || tdd_config5_sf2scheds == 8) {
release_harq(eNB,UE_id,0,frame,subframe,0xffff);
release_harq(eNB,UE_id,1,frame,subframe,0xffff);
}
break;
case 3: // check if M=3,6,9
if (uci->num_pucch_resources == 3 || tdd_config5_sf2scheds == 3 ||
tdd_config5_sf2scheds == 6 || tdd_config5_sf2scheds == 9) {
release_harq(eNB,UE_id,0,frame,subframe,0xffff);
release_harq(eNB,UE_id,1,frame,subframe,0xffff);
}
break;
}
break;
}
} //TDD
eNB->UL_INFO.harq_ind.number_of_harqs++;
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}
void fill_crc_indication(PHY_VARS_eNB *eNB,int UE_id,int frame,int subframe,uint8_t crc_flag) {
pthread_mutex_lock(&eNB->UL_INFO_mutex);
nfapi_crc_indication_pdu_t *pdu = &eNB->UL_INFO.crc_ind.crc_pdu_list[eNB->UL_INFO.crc_ind.number_of_crcs];
pdu->instance_length = 0; // don't know what to do with this
// pdu->rx_ue_information.handle = handle;
pdu->rx_ue_information.rnti = eNB->ulsch[UE_id]->rnti;
pdu->crc_indication_rel8.crc_flag = crc_flag;
eNB->UL_INFO.crc_ind.number_of_crcs++;
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}
void phy_procedures_eNB_uespec_RX(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,const relaying_type_t r_type)
{
//RX processing for ue-specific resources (i
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
const int subframe = proc->subframe_rx;
const int frame = proc->frame_rx;
if ((fp->frame_type == TDD) && (subframe_select(fp,subframe)!=SF_UL)) return;
T(T_ENB_PHY_UL_TICK, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe));
/* TODO: use correct rxdata */
T(T_ENB_PHY_INPUT_SIGNAL, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe), T_INT(0),
T_BUFFER(&eNB->RU_list[0]->common.rxdata[0][subframe*eNB->frame_parms.samples_per_tti],
eNB->frame_parms.samples_per_tti * 4));
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_RX_UESPEC, 1 );
LOG_D(PHY,"[eNB %d] Frame %d: Doing phy_procedures_eNB_uespec_RX(%d)\n",eNB->Mod_id,frame, subframe);
eNB->rb_mask_ul[0]=0;
eNB->rb_mask_ul[1]=0;
eNB->rb_mask_ul[2]=0;
eNB->rb_mask_ul[3]=0;
// Fix me here, these should be locked
eNB->UL_INFO.rx_ind.number_of_pdus = 0;
eNB->UL_INFO.crc_ind.number_of_crcs = 0;
// Call SRS first since all others depend on presence of SRS or lack thereof
srs_procedures(eNB,proc);
lte_eNB_I0_measurements(eNB,
subframe,
0,
eNB->first_run_I0_measurements);
eNB->first_run_I0_measurements = 0;
uci_procedures(eNB,proc);
pusch_procedures(eNB,proc);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_RX_UESPEC, 0 );
stop_meas(&eNB->phy_proc_rx);
}