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fembms: Addapting top-level routines for implementing Turbo-coded (DLSCH) transport channels from 36-212 with FeMBMS support

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Signed-off-by: Javier Morgade <javier.morgade@ieee.org>
This commit is contained in:
Javier Morgade
2020-07-20 10:49:58 +02:00
parent da5ae9c8d1
commit 4923ba301a
1 changed files with 107 additions and 2 deletions
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openair1/PHY/LTE_TRANSPORT/dlsch_coding.c
+107 -2
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@@ -20,12 +20,12 @@
*/
/*! \file PHY/LTE_TRANSPORT/dlsch_coding.c
* \brief Top-level routines for implementing Turbo-coded (DLSCH) transport channels from 36-212, V8.6 2009-03
* \brief Top-level routines for implementing Turbo-coded (DLSCH) transport channels from 36-212, V8.6 2009-03, V14.1 2017 (includes FeMBMS support)
* \author R. Knopp
* \date 2011
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr
* \email: knopp@eurecom.fr, jaiver.morgade@ieee.org
* \note
* \warning
*/
@@ -425,3 +425,108 @@ int dlsch_encoding(PHY_VARS_eNB *eNB,
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_OUT);
return(0);
}
int dlsch_encoding_fembms_pmch(PHY_VARS_eNB *eNB,
L1_rxtx_proc_t *proc,
unsigned char *a,
uint8_t num_pdcch_symbols,
LTE_eNB_DLSCH_t *dlsch,
int frame,
uint8_t subframe,
time_stats_t *rm_stats,
time_stats_t *te_stats,
time_stats_t *i_stats) {
LTE_DL_FRAME_PARMS *frame_parms = &eNB->frame_parms;
unsigned char harq_pid = dlsch->harq_ids[frame%2][subframe];
if((harq_pid < 0) || (harq_pid >= dlsch->Mdlharq)) {
LOG_E(PHY,"dlsch_encoding illegal harq_pid %d %s:%d\n", harq_pid, __FILE__, __LINE__);
return(-1);
}
LTE_DL_eNB_HARQ_t *hadlsch=dlsch->harq_processes[harq_pid];
uint8_t beamforming_mode=0;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_IN);
if(hadlsch->mimo_mode == TM7)
beamforming_mode = 7;
else if(hadlsch->mimo_mode == TM8)
beamforming_mode = 8;
else if(hadlsch->mimo_mode == TM9_10)
beamforming_mode = 9;
unsigned int G = get_G_khz_1dot25(frame_parms,hadlsch->nb_rb,
hadlsch->rb_alloc,
hadlsch->Qm, // mod order
hadlsch->Nl,
num_pdcch_symbols,
frame,subframe,beamforming_mode);
proc->nbEncode=0;
// if (hadlsch->Ndi == 1) { // this is a new packet
if (hadlsch->round == 0) { // this is a new packet
// Add 24-bit crc (polynomial A) to payload
unsigned int A=hadlsch->TBS; //6228;
unsigned int crc = crc24a(a,
A)>>8;
a[A>>3] = ((uint8_t *)&crc)[2];
a[1+(A>>3)] = ((uint8_t *)&crc)[1];
a[2+(A>>3)] = ((uint8_t *)&crc)[0];
// printf("CRC %x (A %d)\n",crc,A);
hadlsch->B = A+24;
// hadlsch->b = a;
memcpy(hadlsch->b,a,(A/8)+4);
if (lte_segmentation(hadlsch->b,
hadlsch->c,
hadlsch->B,
&hadlsch->C,
&hadlsch->Cplus,
&hadlsch->Cminus,
&hadlsch->Kplus,
&hadlsch->Kminus,
&hadlsch->F)<0)
return(-1);
}
for (int r=0, r_offset=0; r<hadlsch->C; r++) {
union turboReqUnion id= {.s={dlsch->rnti,frame,subframe,r,0}};
notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(turboEncode_t), id.p, proc->respEncode, TPencode);
turboEncode_t * rdata=(turboEncode_t *) NotifiedFifoData(req);
rdata->input=hadlsch->c[r];
rdata->Kr_bytes= ( r<hadlsch->Cminus ? hadlsch->Kminus : hadlsch->Kplus) >>3;
rdata->filler=(r==0) ? hadlsch->F : 0;
rdata->r=r;
rdata->harq_pid=harq_pid;
rdata->dlsch=dlsch;
rdata->rm_stats=rm_stats;
rdata->te_stats=te_stats;
rdata->i_stats=i_stats;
rdata->round=hadlsch->round;
rdata->r_offset=r_offset;
rdata->G=G;
if ( proc->threadPool->activated ) {
pushTpool(proc->threadPool,req);
proc->nbEncode++;
} else {
TPencode(rdata);
delNotifiedFIFO_elt(req);
}
int Qm=hadlsch->Qm;
int C=hadlsch->C;
int Nl=hadlsch->Nl;
int Gp = G/Nl/Qm;
int GpmodC = Gp%C;
if (r < (C-(GpmodC)))
r_offset += Nl*Qm * (Gp/C);
else
r_offset += Nl*Qm * ((GpmodC==0?0:1) + (Gp/C));
}
return(0);
}