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openairinterface5g/executables/main-fs6.c
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#include <stdint.h>
#include <common/utils/LOG/log.h>
#include <common/utils/system.h>
#include <common/config/config_userapi.h>
#include <targets/RT/USER/lte-softmodem.h>
#include <openair1/PHY/defs_eNB.h>
#include <openair1/PHY/phy_extern.h>
#include <nfapi/oai_integration/vendor_ext.h>
#include <openair1/SCHED/fapi_l1.h>
#include <openair1/PHY/INIT/phy_init.h>
#include <openair2/LAYER2/MAC/mac_extern.h>
#include <openair1/PHY/LTE_REFSIG/lte_refsig.h>
#include <nfapi/oai_integration/nfapi_pnf.h>
#include <executables/split_headers.h>
#include <nfapi/oai_integration/vendor_ext.h>
#include <openair1/PHY/INIT/lte_init.c>
#include <openair1/PHY/LTE_ESTIMATION/lte_estimation.h>
#include <executables/split_headers.h>
#define FS6_BUF_SIZE 100*1000
static UDPsock_t sockFS6;
// Fixme: there are many mistakes in the datamodel and in redondant variables
// TDD is also mode complex
void setAllfromTS(uint64_t TS) {
for (int i=0; i <RC.nb_RU; i++) {
LTE_DL_FRAME_PARMS *fp=&RC.ru[i]->frame_parms;
uint64_t TStx=TS+sf_ahead*fp->samples_per_tti;
RU_proc_t *proc =&RC.ru[i]->proc;
proc->timestamp_rx= TS;
proc->timestamp_tx= TStx;
proc->subframe_rx= (TS / fp->samples_per_tti)%10;
proc->subframe_tx= (TStx / fp->samples_per_tti)%10;
proc->subframe_prach=(TS / fp->samples_per_tti)%10;
proc->subframe_prach_br=(TS / fp->samples_per_tti)%10;
proc->frame_rx= (TS / (fp->samples_per_tti*10))&1023;
proc->frame_tx= (TStx / (fp->samples_per_tti*10))&1023;
}
for (int i=0; i < RC.nb_inst; i++) {
for (int j=0; j<RC.nb_CC[i]; j++) {
LTE_DL_FRAME_PARMS *fp=&RC.eNB[i][j]->frame_parms;
uint64_t TStx=TS+sf_ahead*fp->samples_per_tti;
L1_proc_t *proc =&RC.eNB[i][j]->proc;
L1_rxtx_proc_t *proc1=&RC.eNB[i][j]->proc.L1_proc;
proc->timestamp_rx= TS;
proc->timestamp_tx= TStx;
proc->subframe_rx= (TS / fp->samples_per_tti)%10;
proc->subframe_prach=(TS / fp->samples_per_tti)%10;
proc->subframe_prach_br=(TS / fp->samples_per_tti)%10;
proc->frame_rx= (TS / (fp->samples_per_tti*10))&1023;
proc->frame_tx= (TStx / (fp->samples_per_tti*10))&1023;
proc1->timestamp_tx= TStx;
proc1->subframe_rx= (TS / fp->samples_per_tti)%10;
proc1->subframe_tx= (TStx / fp->samples_per_tti)%10;
proc1->frame_rx= (TS / (fp->samples_per_tti*10))&1023;
proc1->frame_tx= (TStx / (fp->samples_per_tti*10))&1023;
}
}
return;
}
void prach_eNB_extract(uint8_t *bufferZone, int bufSize, PHY_VARS_eNB *eNB, int frame,int subframe) {
fs6_ul_t *header=(fs6_ul_t *) commonUDPdata(bufferZone);
if (is_prach_subframe(&eNB->frame_parms, frame,subframe)<=0)
return;
eNB->proc.frame_prach = frame;
eNB->proc.subframe_prach = subframe;
eNB->proc.frame_prach_br = frame;
eNB->proc.subframe_prach_br = subframe;
RU_t *ru;
int aa=0;
int ru_aa;
for (int 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];
int ce_level;
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];
}
}
/* Fixme: the orgin code calls the two funtiosn, so one overwrite the second?
rx_prach(eNB,
eNB->RU_list[0],
header->max_preamble,
header->max_preamble_energy,
header->max_preamble_delay,
header->avg_preamble_energy,
frame,
0,
false
);
*/
// run PRACH detection for CE-level 0 only for now when br_flag is set
rx_prach(eNB,
eNB->RU_list[0],
header->max_preamble,
header->max_preamble_energy,
header->max_preamble_delay,
header->avg_preamble_energy,
frame,
0,
true
);
return;
}
void prach_eNB_process(uint8_t *bufferZone, int bufSize, PHY_VARS_eNB *eNB,RU_t *ru,int frame,int subframe) {
fs6_ul_t *header=(fs6_ul_t *) commonUDPdata(bufferZone);
uint16_t *max_preamble=header->max_preamble;
uint16_t *max_preamble_energy=header->max_preamble_energy;
uint16_t *max_preamble_delay=header->max_preamble_delay;
uint16_t *avg_preamble_energy=header->avg_preamble_energy;
// Fixme: not clear why we call twice with "br" and without
int br_flag=1;
if (br_flag==1) {
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.rach_indication_body.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 ((eNB->prach_energy_counter == 100) && (max_preamble_energy[0] > eNB->measurements.prach_I0 + eNB->prach_DTX_threshold_emtc[0])) {
eNB->UL_INFO.rach_ind_br.rach_indication_body.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 + (60*(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_I (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 if ((eNB->prach_energy_counter == 100) &&
(max_preamble_energy[0] > eNB->measurements.prach_I0+eNB->prach_DTX_threshold)) {
LOG_I(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]);
pthread_mutex_lock(&eNB->UL_INFO_mutex);
eNB->UL_INFO.rach_ind.rach_indication_body.number_of_preambles = 1;
eNB->UL_INFO.rach_ind.rach_indication_body.preamble_list = &eNB->preamble_list[0];
eNB->UL_INFO.rach_ind.rach_indication_body.tl.tag = NFAPI_RACH_INDICATION_BODY_TAG;
eNB->UL_INFO.rach_ind.header.message_id = NFAPI_RACH_INDICATION;
eNB->UL_INFO.rach_ind.sfn_sf = frame<<4 | subframe;
eNB->preamble_list[0].preamble_rel8.tl.tag = NFAPI_PREAMBLE_REL8_TAG;
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
if (NFAPI_MODE==NFAPI_MODE_PNF) { // If NFAPI PNF then we need to send the message to the VNF
LOG_D(PHY,"Filling NFAPI indication for RACH : SFN_SF:%d TA %d, Preamble %d, rnti %x, rach_resource_type %d\n",
NFAPI_SFNSF2DEC(eNB->UL_INFO.rach_ind.sfn_sf),
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);
oai_nfapi_rach_ind(&eNB->UL_INFO.rach_ind);
eNB->UL_INFO.rach_ind.rach_indication_body.number_of_preambles = 0;
}
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
} // max_preamble_energy > prach_I0 + 100
else {
eNB->measurements.prach_I0 = ((eNB->measurements.prach_I0*900)>>10) + ((avg_preamble_energy[0]*124)>>10);
if (eNB->prach_energy_counter < 100)
eNB->prach_energy_counter++;
}
}
void pusch_procedures_extract(uint8_t *bufferZone, int bufSize, PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc) {
uint32_t harq_pid;
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
const int subframe = proc->subframe_rx;
const int frame = proc->frame_rx;
for (int i = 0; i < NUMBER_OF_UE_MAX; i++) {
LTE_eNB_ULSCH_t *ulsch = eNB->ulsch[i];
if (ulsch->ue_type > NOCE)
harq_pid = 0;
else
harq_pid= subframe2harq_pid(&eNB->frame_parms,frame,subframe);
LTE_UL_eNB_HARQ_t *ulsch_harq = ulsch->harq_processes[harq_pid];
if (ulsch->rnti>0)
LOG_D(PHY,"eNB->ulsch[%d]->harq_processes[harq_pid:%d] SFN/SF:%04d%d: PUSCH procedures, UE %d/%x ulsch_harq[status:%d SFN/SF:%04d%d handled:%d]\n",
i, harq_pid, frame,subframe,i,ulsch->rnti,
ulsch_harq->status, ulsch_harq->frame, ulsch_harq->subframe, ulsch_harq->handled);
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);
uint8_t 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;
AssertFatal(ulsch_harq->TBS>0,"illegal TBS %d\n",ulsch_harq->TBS);
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, ), 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,
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);
// TBD: add datablock for transmission
}
}
}
void phy_procedures_eNB_uespec_RX_extract(uint8_t *bufferZone, int bufSize, PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc) {
//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;
/* TODO: use correct rxdata */
if ((fp->frame_type == TDD) && (subframe_select(fp,subframe)!=SF_UL)) return;
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.rx_indication_body.number_of_pdus = 0;
eNB->UL_INFO.crc_ind.crc_indication_body.number_of_crcs = 0;
// Call SRS first since all others depend on presence of SRS or lack thereof
srs_procedures (eNB, proc);
eNB->first_run_I0_measurements = 0;
uci_procedures (eNB, proc);
if (NFAPI_MODE==NFAPI_MONOLITHIC || NFAPI_MODE==NFAPI_MODE_PNF) { // If PNF or monolithic
pusch_procedures_extract(bufferZone, bufSize, eNB,proc);
}
lte_eNB_I0_measurements (eNB, subframe, 0, eNB->first_run_I0_measurements);
int min_I0=1000,max_I0=0;
if ((frame==0) && (subframe==4)) {
for (int i=0; i<eNB->frame_parms.N_RB_UL; i++) {
if (i==(eNB->frame_parms.N_RB_UL>>1) - 1) i+=2;
if (eNB->measurements.n0_subband_power_tot_dB[i]<min_I0)
min_I0 = eNB->measurements.n0_subband_power_tot_dB[i];
if (eNB->measurements.n0_subband_power_tot_dB[i]>max_I0)
max_I0 = eNB->measurements.n0_subband_power_tot_dB[i];
}
LOG_I (PHY, "max_I0 %d, min_I0 %d\n", max_I0, min_I0);
}
return;
}
void pusch_procedures_process(uint8_t *bufferZone, int bufSize, PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc) {
//LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
const int subframe = proc->subframe_rx;
const int frame = proc->frame_rx;
uint32_t harq_pid;
uint32_t harq_pid0 = subframe2harq_pid(&eNB->frame_parms,frame,subframe);
for (int i = 0; i < NUMBER_OF_UE_MAX; i++) {
LTE_eNB_ULSCH_t *ulsch = eNB->ulsch[i];
if (ulsch->ue_type > NOCE) harq_pid = 0;
else harq_pid=harq_pid0;
LTE_UL_eNB_HARQ_t *ulsch_harq = ulsch->harq_processes[harq_pid];
if (ulsch->rnti>0)
LOG_D(PHY,"eNB->ulsch[%d]->harq_processes[harq_pid:%d] SFN/SF:%04d%d: PUSCH procedures, UE %d/%x ulsch_harq[status:%d SFN/SF:%04d%d handled:%d]\n",
i, harq_pid, frame,subframe,i,ulsch->rnti,
ulsch_harq->status, ulsch_harq->frame, ulsch_harq->subframe, ulsch_harq->handled);
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));
}
start_meas(&eNB->ulsch_decoding_stats);
int 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 ulsch_harq->cqi_crc_status:%d ackBits:%d ulsch_decoding_stats[t:%lld max:%lld]\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]),
30,//eNB->measurements.n0_power_dB[0],
30,//eNB->measurements.n0_power_dB[1],
ulsch_harq->o_ACK[0],
ulsch_harq->o_ACK[1],
ret,
ulsch_harq->cqi_crc_status,
ulsch_harq->O_ACK,
eNB->ulsch_decoding_stats.p_time, eNB->ulsch_decoding_stats.max);
//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 (RC.mac != NULL) { /* ulsim does not use RC.mac context. */
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);
RC.mac[eNB->Mod_id]->UE_list.UE_sched_ctrl[i].cqi_req_flag &= (~(1 << subframe));
} else {
if(RC.mac[eNB->Mod_id]->UE_list.UE_sched_ctrl[i].cqi_req_flag & (1 << subframe) ) {
RC.mac[eNB->Mod_id]->UE_list.UE_sched_ctrl[i].cqi_req_flag &= (~(1 << subframe));
RC.mac[eNB->Mod_id]->UE_list.UE_sched_ctrl[i].cqi_req_timer=30;
LOG_D(PHY,"Frame %d,Subframe %d, We're supposed to get a cqi here. Set cqi_req_timer to 30.\n",frame,subframe);
}
}
}
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,
ulsch->Mlimit,
ulsch_harq->o_ACK[0],
ulsch_harq->o_ACK[1]);
if (ulsch_harq->round >= 3) {
ulsch_harq->status = SCH_IDLE;
ulsch_harq->handled = 0;
ulsch->harq_mask &= ~(1 << harq_pid);
ulsch_harq->round = 0;
}
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
);
/* Mark the HARQ process to release it later if max transmission reached
* (see below).
* MAC does not send the max transmission count, we have to deal with it
* locally in PHY.
*/
ulsch_harq->handled = 1;
} // 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
ulsch_harq->status = SCH_IDLE;
ulsch->harq_mask &= ~(1 << harq_pid);
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));
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
);
} // 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]);
} // 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->handled = 0;
ulsch->harq_mask &= ~(1 << harq_pid);
LOG_W (PHY, "Removing stale ULSCH config for UE %x harq_pid %d (harq_mask is now 0x%2.2x)\n", ulsch->rnti, harq_pid, ulsch->harq_mask);
}
} // for (i=0; i<NUMBER_OF_UE_MAX; i++)
}
void phy_procedures_eNB_uespec_RX_process(uint8_t *bufferZone, int nbBlocks, PHY_VARS_eNB *phy_vars_eNB,L1_rxtx_proc_t *proc) {
}
void phy_procedures_eNB_TX_process(uint8_t *bufferZone, int nbBlocks, PHY_VARS_eNB *eNB, L1_rxtx_proc_t *proc, int do_meas ) {
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
int subframe=proc->subframe_tx;
int frame=proc->frame_tx;
//LTE_UL_eNB_HARQ_t *ulsch_harq;
eNB->pdcch_vars[subframe&1].num_pdcch_symbols=hDL(bufferZone)->num_pdcch_symbols;
eNB->pdcch_vars[subframe&1].num_dci=hDL(bufferZone)->num_dci;
uint8_t num_mdci = eNB->mpdcch_vars[subframe&1].num_dci = hDL(bufferZone)->num_mdci;
// Remove all scheduled DL, we will populate from the CU sending
for (int UE_id=0; UE_id<NUMBER_OF_UE_MAX; UE_id++) {
LTE_eNB_DLSCH_t *dlsch0 = eNB->dlsch[UE_id][0];
if ( dlsch0 && dlsch0->rnti>0 ) {
#ifdef PHY_TX_THREAD
dlsch0->active[subframe] = 0;
#else
dlsch0->active = 0;
#endif
}
}
void *bufPtr=bufferZone;
for (int i=0; i < nbBlocks; i++) { //nbBlocks is the actual received blocks
if ( ((commonUDP_t *)bufPtr)->contentBytes >= sizeof(fs6_dl_t)+sizeof(fs6_dl_uespec_t) ) {
int curUE=hDLUE(bufPtr)->UE_id;
#ifdef PHY_TX_THREAD
eNB->dlsch[curUE][0]->active[subframe] = 1;
#else
eNB->dlsch[curUE][0]->active = 1;
#endif
eNB->dlsch[curUE][0]->harq_ids[frame%2][subframe]=hDLUE(bufPtr)->harq_pid;
eNB->dlsch[curUE][0]->rnti=hDLUE(bufPtr)->rnti;
memcpy(eNB->dlsch[curUE][0]->harq_processes[hDLUE(bufPtr)->harq_pid]->e,
hDLUE(bufPtr)+1, hDLUE(bufPtr)->dataLen);
}
bufPtr+=alignedSize(bufPtr);
}
if (do_meas==1) {
start_meas(&eNB->phy_proc_tx);
start_meas(&eNB->dlsch_common_and_dci);
}
// clear the transmit data array for the current subframe
for (int 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 (NFAPI_MODE==NFAPI_MONOLITHIC || NFAPI_MODE==NFAPI_MODE_PNF) {
if (is_pmch_subframe(frame,subframe,fp)) {
pmch_procedures(eNB,proc);
} else {
// this is not a pmch subframe, so generate PSS/SSS/PBCH
common_signal_procedures(eNB,frame, subframe);
}
}
// clear previous allocation information for all UEs
for (int i = 0; i < NUMBER_OF_UE_MAX; i++) {
//if (eNB->dlsch[i][0])
//eNB->dlsch[i][0]->subframe_tx[subframe] = 0;
}
if (NFAPI_MODE==NFAPI_MONOLITHIC || NFAPI_MODE==NFAPI_MODE_PNF) {
for (int i=0; i< hDL(bufferZone)->num_dci; i++)
eNB->pdcch_vars[subframe&1].dci_alloc[i]=hDL(bufferZone)->dci_alloc[i];
generate_dci_top(hDL(bufferZone)->num_pdcch_symbols,
hDL(bufferZone)->num_dci,
&eNB->pdcch_vars[subframe&1].dci_alloc[0],
0,
hDL(bufferZone)->amp,
fp,
eNB->common_vars.txdataF,
subframe);
if (num_mdci > 0) {
LOG_D (PHY, "[eNB %" PRIu8 "] Frame %d, subframe %d: Calling generate_mdci_top (mpdcch) (num_dci %" PRIu8 ")\n", eNB->Mod_id, frame, subframe, num_mdci);
generate_mdci_top (eNB, frame, subframe, AMP, eNB->common_vars.txdataF);
}
}
for (int UE_id=0; UE_id<NUMBER_OF_UE_MAX; UE_id++) {
LTE_eNB_DLSCH_t *dlsch0 = eNB->dlsch[UE_id][0];
LTE_eNB_DLSCH_t *dlsch1 = eNB->dlsch[UE_id][1];
if ((dlsch0)&&(dlsch0->rnti>0)&&
#ifdef PHY_TX_THREAD
(dlsch0->active[subframe] == 1)
#else
(dlsch0->active == 1)
#endif
) {
int harq_pid=dlsch0->harq_ids[frame%2][subframe];
pdsch_procedures(eNB,
proc,
harq_pid,
dlsch0,
dlsch1);
}
}
eNB->phich_vars[subframe&1]=hDL(bufferZone)->phich_vars;
generate_phich_top(eNB,
proc,
AMP);
}
void appendFs6DLUE(uint8_t *bufferZone, int UE_id, int8_t harq_pid, uint16_t rnti, uint8_t *UEdata, int UEdataLen) {
commonUDP_t *FirstUDPheader=(commonUDP_t *) bufferZone;
// move to the end
uint8_t *firstFreeByte=bufferZone;
int curBlock=0;
for (int i=0; i < FirstUDPheader->nbBlocks; i++) {
AssertFatal( ((commonUDP_t *) firstFreeByte)->blockID==curBlock,"");
firstFreeByte+=alignedSize(firstFreeByte);
curBlock++;
}
AssertFatal(firstFreeByte+UEdataLen+sizeof(fs6_dl_t) <= bufferZone+FS6_BUF_SIZE, "");
commonUDP_t *newUDPheader=(commonUDP_t *) firstFreeByte;
FirstUDPheader->nbBlocks++;
newUDPheader->blockID=curBlock;
newUDPheader->contentBytes=sizeof(fs6_dl_t)+sizeof(fs6_dl_uespec_t) + UEdataLen;
// We skip the fs6 DL header, that is populated by caller
// This header will be duplicated during sending
hDLUE(newUDPheader)->UE_id=UE_id;
hDLUE(newUDPheader)->harq_pid=harq_pid;
hDLUE(newUDPheader)->rnti=rnti;
hDLUE(newUDPheader)->dataLen=UEdataLen;
memcpy(hDLUE(newUDPheader)+1, UEdata, UEdataLen);
}
void phy_procedures_eNB_TX_extract(uint8_t *bufferZone, PHY_VARS_eNB *eNB, L1_rxtx_proc_t *proc, int do_meas, uint8_t *buf, int bufSize) {
int frame=proc->frame_tx;
int subframe=proc->subframe_tx;
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
if ((fp->frame_type == TDD) && (subframe_select (fp, subframe) == SF_UL)) {
LOG_W(HW,"no sending in eNB_TX\n");
return;
}
// clear existing ulsch dci allocations before applying info from MAC (this is table
// returns -1 (or 255) if there is no ul (tdd cases)
int ul_subframe = pdcch_alloc2ul_subframe (fp, subframe);
int ul_frame = pdcch_alloc2ul_frame (fp, frame, subframe);
// clear previous allocation information for all UEs
for (int i = 0; i < NUMBER_OF_UE_MAX; i++) {
//if (eNB->dlsch[i][0])
//eNB->dlsch[i][0]->subframe_tx[subframe] = 0;
}
/* TODO: check the following test - in the meantime it is put back as it was before */
//if ((ul_subframe < 10)&&
// (subframe_select(fp,ul_subframe)==SF_UL)) { // This means that there is a potential UL subframe that will be scheduled here
if (ul_subframe < 10) { // This means that there is a potential UL subframe that will be schedulyed here
for (int i=0; i<NUMBER_OF_UE_MAX; i++) {
int harq_pid;
if (eNB->ulsch[i] && eNB->ulsch[i]->ue_type > NOCE)
// LTE-M case
harq_pid = 0;
else
hDL(bufferZone)->UE_ul_active[i] = harq_pid = subframe2harq_pid(fp, ul_frame, ul_subframe);
if (eNB->ulsch[i]) {
//LTE_UL_eNB_HARQ_t *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.
*/
/* seems useless: unused variables
header->previous_first_rb=
ulsch_harq->previous_first_rb = ulsch_harq->first_rb;
header->previous_n_DMRS =
ulsch_harq->previous_n_DMRS = ulsch_harq->n_DMRS;
*/
hDL(bufferZone)->UE_ul_active[i] = harq_pid;
} else
hDL(bufferZone)->UE_ul_active[i] = -1;
}
}
uint8_t num_pdcch_symbols = eNB->pdcch_vars[subframe&1].num_pdcch_symbols;
uint8_t num_dci = eNB->pdcch_vars[subframe&1].num_dci;
uint8_t num_mdci = eNB->mpdcch_vars[subframe&1].num_dci;
LOG_D(PHY,"num_pdcch_symbols %"PRIu8",number dci %"PRIu8"\n",num_pdcch_symbols, num_dci);
if (NFAPI_MODE==NFAPI_MONOLITHIC || NFAPI_MODE==NFAPI_MODE_PNF) {
hDL(bufferZone)->num_pdcch_symbols=num_pdcch_symbols;
hDL(bufferZone)->num_dci=num_dci;
hDL(bufferZone)->num_mdci=num_mdci;
hDL(bufferZone)->amp=AMP;
}
if (do_meas==1) stop_meas(&eNB->dlsch_common_and_dci);
if (do_meas==1) start_meas(&eNB->dlsch_ue_specific);
// Now scan UE specific DLSCH
LTE_eNB_DLSCH_t *dlsch0;
for (int UE_id=0; UE_id<NUMBER_OF_UE_MAX; UE_id++) {
LTE_eNB_DLSCH_t *dlsch0 = eNB->dlsch[UE_id][0];
if ((dlsch0)&&(dlsch0->rnti>0)&&
#ifdef PHY_TX_THREAD
(dlsch0->active[subframe] == 1)
#else
(dlsch0->active == 1)
#endif
) {
// get harq_pid
int harq_pid = dlsch0->harq_ids[frame%2][subframe];
AssertFatal(harq_pid>=0,"harq_pid is negative\n");
if (harq_pid>=8) {
if (dlsch0->ue_type == NOCE)
LOG_E(PHY,"harq_pid:%d corrupt must be 0-7 UE_id:%d frame:%d subframe:%d rnti:%x [ %1d.%1d.%1d.%1d.%1d.%1d.%1d.%1d\n", harq_pid,UE_id,frame,subframe,dlsch0->rnti,
dlsch0->harq_ids[frame%2][0],
dlsch0->harq_ids[frame%2][1],
dlsch0->harq_ids[frame%2][2],
dlsch0->harq_ids[frame%2][3],
dlsch0->harq_ids[frame%2][4],
dlsch0->harq_ids[frame%2][5],
dlsch0->harq_ids[frame%2][6],
dlsch0->harq_ids[frame%2][7]);
} else {
if (dlsch_procedures(eNB,
proc,
harq_pid,
dlsch0,
&eNB->UE_stats[(uint32_t)UE_id])) {
// data in: dlsch0 harq_processes[harq_pid]->e
/* length
get_G(fp,
dlsch_harq->nb_rb,
dlsch_harq->rb_alloc,
dlsch_harq->Qm,
dlsch_harq->Nl,
dlsch_harq->pdsch_start,
frame,subframe,
0)
need harq_pid
*/
LTE_DL_eNB_HARQ_t *dlsch_harq=dlsch0->harq_processes[harq_pid];
appendFs6DLUE(bufferZone,
UE_id,
harq_pid,
dlsch0->rnti,
dlsch0->harq_processes[harq_pid]->e,
get_G(fp,
dlsch_harq->nb_rb,
dlsch_harq->rb_alloc,
dlsch_harq->Qm,
dlsch_harq->Nl,
dlsch_harq->pdsch_start,
frame,subframe,
0)
);
}
}
} else if ((dlsch0)&&(dlsch0->rnti>0)&&
#ifdef PHY_TX_THREAD
(dlsch0->active[subframe] == 0)
#else
(dlsch0->active == 0)
#endif
) {
// 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;
}
}
hDL(bufferZone)->phich_vars=eNB->phich_vars[subframe&1];
if (do_meas==1) stop_meas(&eNB->dlsch_ue_specific);
if (do_meas==1) stop_meas(&eNB->phy_proc_tx);
// MBMS is not working in OAI
if (hDL(bufferZone)->num_mdci) abort();
return;
}
void DL_du_fs6(RU_t *ru) {
RU_proc_t *ru_proc=&ru->proc;
for (int i=0; i<ru->num_eNB; i++) {
initBufferZone(bufferZone);
int nb_blocks=receiveSubFrame(&sockFS6, bufferZone, sizeof(bufferZone), CTsentCUv0 );
if (nb_blocks > 0) {
L1_proc_t *L1_proc = &ru->eNB_list[i]->proc;
if ( L1_proc->timestamp_tx != hUDP(bufferZone)->timestamp) {
LOG_E(HW,"Missed a subframe: expecting: %lu, received %lu\n",
L1_proc->timestamp_tx,
hUDP(bufferZone)->timestamp);
}
setAllfromTS(hUDP(bufferZone)->timestamp -
sf_ahead*ru->eNB_list[i]->frame_parms.samples_per_tti);
phy_procedures_eNB_TX_process( bufferZone, nb_blocks, ru->eNB_list[i], &ru->eNB_list[i]->proc.L1_proc, 1);
} else
LOG_E(PHY,"DL not received for subframe\n");
}
feptx_prec(ru);
feptx_ofdm(ru);
tx_rf(ru);
}
void UL_du_fs6(RU_t *ru, int frame, int subframe) {
RU_proc_t *ru_proc=&ru->proc;
int tmpf=frame, tmpsf=subframe;
rx_rf(ru,&tmpf,&tmpsf);
AssertFatal(tmpf==frame && tmpsf==subframe, "lost synchronization\n");
ru_proc->frame_tx = (ru_proc->frame_tx+ru_proc->frame_offset)&1023;
setAllfromTS(ru_proc->timestamp_rx);
// Fixme: datamodel issue
PHY_VARS_eNB *eNB = RC.eNB[0][0];
L1_proc_t *proc = &eNB->proc;
if (NFAPI_MODE==NFAPI_MODE_PNF) {
// I am a PNF and I need to let nFAPI know that we have a (sub)frame tick
//add_subframe(&frame, &subframe, 4);
//oai_subframe_ind(proc->frame_tx, proc->subframe_tx);
oai_subframe_ind(proc->frame_rx, proc->subframe_rx);
}
initBufferZone(bufferZone);
hUDP(bufferZone)->timestamp=ru->proc.timestamp_rx;
prach_eNB_extract(bufferZone, FS6_BUF_SIZE, eNB, proc->frame_rx,proc->subframe_rx );
if (NFAPI_MODE==NFAPI_MONOLITHIC || NFAPI_MODE==NFAPI_MODE_PNF) {
phy_procedures_eNB_uespec_RX_extract(bufferZone, FS6_BUF_SIZE, eNB, &proc->L1_proc );
}
if (hUDP(bufferZone)->nbBlocks==0) {
hUDP(bufferZone)->nbBlocks=1; // We have to send the signaling, even is there is no user plan data (no UE)
hUDP(bufferZone)->blockID=0;
hUDP(bufferZone)->contentBytes=sizeof(fs6_ul_t);
}
for (int i=0; i<ru->num_eNB; i++) {
sendSubFrame(&sockFS6, bufferZone, sizeof(fs6_ul_t), CTsentDUv0);
}
}
void DL_cu_fs6(RU_t *ru, uint64_t TS) {
// Fixme: datamodel issue
PHY_VARS_eNB *eNB = RC.eNB[0][0];
L1_proc_t *proc = &eNB->proc;
pthread_mutex_lock(&eNB->UL_INFO_mutex);
eNB->UL_INFO.frame = proc->frame_rx;
eNB->UL_INFO.subframe = proc->subframe_rx;
eNB->UL_INFO.module_id = eNB->Mod_id;
eNB->UL_INFO.CC_id = eNB->CC_id;
eNB->if_inst->UL_indication(&eNB->UL_INFO);
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
initBufferZone(bufferZone);
phy_procedures_eNB_TX_extract(bufferZone, eNB, &proc->L1_proc, 1, bufferZone, FS6_BUF_SIZE);
hUDP(bufferZone)->timestamp=proc->L1_proc.timestamp_tx;
if (hUDP(bufferZone)->nbBlocks==0) {
hUDP(bufferZone)->nbBlocks=1; // We have to send the signaling, even is there is no user plan data (no UE)
hUDP(bufferZone)->blockID=0;
hUDP(bufferZone)->contentBytes=sizeof(fs6_dl_t);
}
sendSubFrame(&sockFS6, bufferZone, sizeof(fs6_dl_t), CTsentCUv0 );
}
void UL_cu_fs6(RU_t *ru, uint64_t *TS) {
initBufferZone(bufferZone);
int nb_blocks=receiveSubFrame(&sockFS6, bufferZone, sizeof(bufferZone), CTsentDUv0 );
if (nb_blocks ==0) {
LOG_W(PHY, "CU lost a subframe\n");
return;
}
if (nb_blocks != hUDP(bufferZone)->nbBlocks )
LOG_W(PHY, "received %d blocks for %d expected\n", nb_blocks, hUDP(bufferZone)->nbBlocks);
if ( *TS != hUDP(bufferZone)->timestamp ) {
LOG_W(HW, "CU received time: %lu instead of %lu expected\n", hUDP(bufferZone)->timestamp, *TS);
*TS=hUDP(bufferZone)->timestamp;
}
setAllfromTS(hUDP(bufferZone)->timestamp);
PHY_VARS_eNB *eNB = RC.eNB[0][0];
release_UE_in_freeList(eNB->Mod_id);
if (NFAPI_MODE==NFAPI_MONOLITHIC || NFAPI_MODE==NFAPI_MODE_PNF) {
phy_procedures_eNB_uespec_RX_process(bufferZone, sizeof(bufferZone), eNB, &eNB->proc.L1_proc);
}
}
void *cu_fs6(void *arg) {
RU_t *ru = (RU_t *)arg;
//RU_proc_t *proc = &ru->proc;
fill_rf_config(ru,ru->rf_config_file);
init_frame_parms(&ru->frame_parms,1);
phy_init_RU(ru);
wait_sync("ru_thread");
AssertFatal(createUDPsock(NULL, CU_PORT, CU_IP, DU_PORT, &sockFS6), "");
uint64_t timeStamp=0;
while(1) {
timeStamp+=ru->frame_parms.samples_per_tti;
UL_cu_fs6(ru, &timeStamp);
DL_cu_fs6(ru, timeStamp);
}
return NULL;
}
void *du_fs6(void *arg) {
RU_t *ru = (RU_t *)arg;
//RU_proc_t *proc = &ru->proc;
fill_rf_config(ru,ru->rf_config_file);
init_frame_parms(&ru->frame_parms,1);
phy_init_RU(ru);
openair0_device_load(&ru->rfdevice,&ru->openair0_cfg);
wait_sync("ru_thread");
AssertFatal(createUDPsock(NULL, DU_PORT, DU_IP, CU_PORT, &sockFS6),"");
if (ru->start_rf) {
if (ru->start_rf(ru) != 0)
LOG_E(HW,"Could not start the RF device\n");
else LOG_I(PHY,"RU %d rf device ready\n",ru->idx);
} else LOG_I(PHY,"RU %d no rf device\n",ru->idx);
while(1) {
L1_proc_t *proc = &ru->eNB_list[0]->proc;
UL_du_fs6(ru, proc->frame_rx,proc->subframe_rx);
DL_du_fs6(ru);
}
return NULL;
}
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