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fembms: routines for decoding the UE FeMBMS/PMCH physical/multicast/transport channel 3GPP TS 36.211 version 14.2.0

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Signed-off-by: Javier Morgade <javier.morgade@ieee.org>
This commit is contained in:
Javier Morgade
2020-07-21 15:09:38 +02:00
parent 8eac27b83b
commit 5eb6dac7db
2 changed files with 132 additions and 17 deletions
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openair1/PHY/LTE_TRANSPORT/pmch.c
+50
View File
@@ -128,3 +128,53 @@ void generate_mch(PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc,uint8_t *a)
}
void generate_mch_khz_1dot25(PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc,uint8_t *a)
{
int G;
int subframe = proc->subframe_tx;
int frame = proc->frame_tx;
//int bits;
G = get_G_khz_1dot25(&eNB->frame_parms,
eNB->frame_parms.N_RB_DL,
eNB->dlsch_MCH->harq_processes[0]->rb_alloc,
get_Qm(eNB->dlsch_MCH->harq_processes[0]->mcs),1,
2,proc->frame_tx,subframe,0);
//FeMBMS
eNB->dlsch_MCH->harq_processes[0]->Qm = get_Qm(eNB->dlsch_MCH->harq_processes[0]->mcs);
generate_mbsfn_pilot_khz_1dot25(eNB,proc,
eNB->common_vars.txdataF,
AMP);
AssertFatal(dlsch_encoding_fembms_pmch(eNB,
proc,
// a,
eNB->dlsch_MCH->harq_processes[0]->pdu,
1,
eNB->dlsch_MCH,
proc->frame_tx,
subframe,
&eNB->dlsch_rate_matching_stats,
&eNB->dlsch_turbo_encoding_stats,
&eNB->dlsch_interleaving_stats)==0,
"problem in dlsch_encoding");
/*for(bits=0;bits<G;bits++)
printf("%d",eNB->dlsch_MCH->harq_processes[0]->e[bits]);
printf("\n");*/
dlsch_scrambling(&eNB->frame_parms,1,eNB->dlsch_MCH,0,G,0,frame,subframe<<1);
mch_modulation_khz_1dot25(eNB->common_vars.txdataF,
AMP,
subframe,
&eNB->frame_parms,
eNB->dlsch_MCH);
}
openair1/PHY/LTE_TRANSPORT/pmch_common.c
+82 -17
View File
@@ -37,23 +37,84 @@
int is_fembms_cas_subframe(uint32_t frame, int subframe, LTE_DL_FRAME_PARMS *frame_parms) {
uint32_t period;
//uint32_t period;
if(frame_parms->NonMBSFN_config_flag ) {
period = 4<<frame_parms->NonMBSFN_config.radioframeAllocationPeriod;
//if(frame_parms->NonMBSFN_config_flag ) {
// period = 4<<frame_parms->NonMBSFN_config.radioframeAllocationPeriod;
if ((frame % period) == frame_parms->NonMBSFN_config.radioframeAllocationOffset) {
// if ((frame % period) == frame_parms->NonMBSFN_config.radioframeAllocationOffset) {
// switch (subframe) {
// case 0:
// return(1); //This should be CAS
// break;
// }
// }
//}
if(frame_parms->NonMBSFN_config_flag || frame_parms->FeMBMS_active){
if ((frame&3)==0) {
switch (subframe) {
case 0:
return(1); //This should be CAS
break;
return(1); //This should be CAS
break;
}
}
}
}
return (0);
}
int is_fembms_nonMBSFN_subframe(uint32_t frame, int subframe, LTE_DL_FRAME_PARMS *frame_parms){
uint32_t period;
if(frame_parms->NonMBSFN_config_flag ) {
period = 4<<frame_parms->NonMBSFN_config.radioframeAllocationPeriod;
if ((frame % period) == frame_parms->NonMBSFN_config.radioframeAllocationOffset) {
switch (subframe) {
case 0:
return(1); //This should be CAS
break;
case 1:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x100) > 0)
return(1);
break;
case 2:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x80) > 0)
return(1);
break;
case 3:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x40) > 0)
return(1);
break;
case 4:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x20) > 0)
return(1);
break;
case 5:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x10) > 0)
return(1);
break;
case 6:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x8) > 0)
return(1);
break;
case 7:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x4) > 0)
return(1);
break;
case 8:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x2) > 0)
return(1);
break;
case 9:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x1) > 0)
return(1);
break;
}
}
}
return (0);
}
int is_fembms_pmch_subframe(uint32_t frame, int subframe, LTE_DL_FRAME_PARMS *frame_parms) {
uint32_t period;
@@ -62,63 +123,67 @@ int is_fembms_pmch_subframe(uint32_t frame, int subframe, LTE_DL_FRAME_PARMS *fr
if ((frame % period) == frame_parms->NonMBSFN_config.radioframeAllocationOffset) {
switch (subframe) {
case 0:
return(0);
break;
case 1:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x100) > 0)
return(1);
return(0);
break;
case 2:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x80) > 0)
return(1);
return(0);
break;
case 3:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x40) > 0)
return(1);
return(0);
break;
case 4:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x20) > 0)
return(1);
return(0);
break;
case 5:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x10) > 0)
return(1);
return(0);
break;
case 6:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x8) > 0)
return(1);
return(0);
break;
case 7:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x4) > 0)
return(1);
return(0);
break;
case 8:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x2) > 0)
return(1);
return(0);
break;
case 9:
if ((frame_parms->NonMBSFN_config.non_mbsfn_SubframeConfig & 0x1) > 0)
return(1);
return(0);
break;
}
} else { //Then regular MBSFN FeMBMS subframe
} else if((frame_parms->FeMBMS_active == 1 || frame_parms->NonMBSFN_config_flag == 1 ) && !is_fembms_cas_subframe(frame,subframe,frame_parms) ) { //Then regular MBSFN FeMBMS subframe
return(1);
}
return(1);
}
return(0);