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Commit 539c8de2 authored by Raymond Knopp's avatar Raymond Knopp
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fixed coherency issue across slots for PUCCH 1A/B detection (energy detection... 

fixed coherency issue across slots for PUCCH 1A/B detection (energy detection component). Introduced a variable scaling for channel matched filter in PUCCH1A/B detector. Current version goes as far on simulator as RU-RAU-split prior to merge with develop
parent 28707a69
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Showing with 93 additions and 59 deletions
openair1/PHY/LTE_TRANSPORT/pucch.c
View file @ 539c8de2
......@@ -1175,10 +1175,10 @@ uint16_t pucchfmt3_subCarrierDeMapping( PHY_VARS_eNB *eNB,
if (carrier_offset==frame_parms->ofdm_symbol_size)
carrier_offset = 0;
#ifdef DEBUG_PUCCH_RX
/* #ifdef DEBUG_PUCCH_RX
LOG_D(PHY,"[eNB] PUCCH subframe %d (%d,%d,%d,%d) : (%d,%d)\n",subframe,l,k,carrier_offset,m,
SubCarrierDeMapData[aa][l][k][0],SubCarrierDeMapData[aa][l][k][1]);
#endif
#endif*/
}
}
}
......@@ -1810,9 +1810,13 @@ uint32_t rx_pucch(PHY_VARS_eNB *eNB,
int16_t tmp_re,tmp_im,W_re=0,W_im=0;
int16_t *rxptr;
uint32_t symbol_offset;
int16_t stat_ref_re,stat_ref_im,*cfo,chest_re,chest_im;
int16_t stat_ref_re,stat_ref_im,*cfo;
int16_t chest0_re[NB_ANTENNAS_RX][12],chest0_im[NB_ANTENNAS_RX][12];
int16_t chest1_re[NB_ANTENNAS_RX][12],chest1_im[NB_ANTENNAS_RX][12];
int32_t chest_mag;
int32_t stat_re=0,stat_im=0;
uint32_t stat,stat_max=0;
uint8_t log2_maxh;
uint8_t deltaPUCCH_Shift = frame_parms->pucch_config_common.deltaPUCCH_Shift;
uint8_t NRB2 = frame_parms->pucch_config_common.nRB_CQI;
......@@ -2194,6 +2198,10 @@ uint32_t rx_pucch(PHY_VARS_eNB *eNB,
for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
for (re=0; re<12; re++) {
// compute received energy first slot, seperately for data and reference
// by coherent combining across symbols but not resource elements
// Note: assumption is that channel is stationary over symbols in slot after CFO
stat_re=0;
stat_im=0;
stat_ref_re=0;
......@@ -2219,9 +2227,15 @@ uint32_t rx_pucch(PHY_VARS_eNB *eNB,
stat_re,stat_im);
#endif
}
// this is total energy received, summed over data and reference
stat += ((((stat_re*stat_re)) + ((stat_im*stat_im)) +
((stat_ref_re*stat_ref_re)) + ((stat_ref_im*stat_ref_im)))/nsymb);
// now second slot
stat_re=0;
stat_im=0;
stat_ref_re=0;
stat_ref_im=0;
for (l2=0,l=(nsymb>>1); l<(nsymb-1); l++,l2++) {
if ((l2<2) || ((l2>(nsymb>>1) - 3)) ) { // data symbols
......@@ -2284,100 +2298,120 @@ uint32_t rx_pucch(PHY_VARS_eNB *eNB,
// Do detection now
if (sigma2_dB<(dB_fixed(stat_max)-pucch1_thres)) {//
*Po_PUCCH = ((*Po_PUCCH*1023) + stat_max)>>10;
chL = (nsymb>>1)-4;
chest_mag=0;
cfo = (frame_parms->Ncp==0) ? &cfo_pucch_np[14*phase_max] : &cfo_pucch_ep[12*phase_max];
for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
// channel estimates first
for (re=0; re<12; re++) {
chest_re=0;
chest_im=0;
cfo = (frame_parms->Ncp==0) ? &cfo_pucch_np[14*phase_max] : &cfo_pucch_ep[12*phase_max];
// channel estimate for first slot
chest0_re[aa][re]=0;
chest0_im[aa][re]=0;
for (l=2; l<(nsymb>>1)-2; l++) {
off=(re<<1) + (24*l);
chest_re += (((rxcomp[aa][off]*(int32_t)cfo[l<<1])>>15) - ((rxcomp[aa][1+off]*(int32_t)cfo[1+(l<<1)])>>15))/chL;
chest_im += (((rxcomp[aa][off]*(int32_t)cfo[1+(l<<1)])>>15) + ((rxcomp[aa][1+off]*(int32_t)cfo[(l<<1)])>>15))/chL;
chest0_re[aa][re] += (((rxcomp[aa][off]*(int32_t)cfo[l<<1])>>15) - ((rxcomp[aa][1+off]*(int32_t)cfo[1+(l<<1)])>>15))/chL;
chest0_im[aa][re] += (((rxcomp[aa][off]*(int32_t)cfo[1+(l<<1)])>>15) + ((rxcomp[aa][1+off]*(int32_t)cfo[(l<<1)])>>15))/chL;
}
// channel estimate for second slot
chest1_re[aa][re]=0;
chest1_im[aa][re]=0;
for (l=2; l<(nsymb>>1)-2; l++) {
off=(re<<1) + (24*l) + (nsymb>>1)*24;
chest1_re[aa][re] += (((rxcomp[aa][off]*(int32_t)cfo[l<<1])>>15) - ((rxcomp[aa][1+off]*(int32_t)cfo[1+(l<<1)])>>15))/chL;
chest1_im[aa][re] += (((rxcomp[aa][off]*(int32_t)cfo[1+(l<<1)])>>15) + ((rxcomp[aa][1+off]*(int32_t)cfo[(l<<1)])>>15))/chL;
}
chest_mag = max(chest_mag,(chest0_re[aa][re]*chest0_re[aa][re]) + (chest0_im[aa][re]*chest0_im[aa][re]));
chest_mag = max(chest_mag,(chest1_re[aa][re]*chest1_re[aa][re]) + (chest1_im[aa][re]*chest1_im[aa][re]));
}
}
log2_maxh = log2_approx(chest_mag)/2;
#ifdef DEBUG_PUCCH_RX
printf("[eNB] PUCCH subframe %d l %d re %d chest1 => (%d,%d)\n",subframe,l,re,
chest_re,chest_im);
printf("PUCCH 1A: log2_maxh %d\n",log2_maxh);
#endif
// now do channel matched filter
for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
for (re=0; re<12; re++) {
#ifdef DEBUG_PUCCH_RX
printf("[eNB] PUCCH subframe %d chest0[%d][%d] => (%d,%d)\n",subframe,aa,re,
chest0_re[aa][re],chest0_im[aa][re]);
#endif
// first slot, left of RS
for (l=0; l<2; l++) {
off=(re<<1) + (24*l);
tmp_re = ((rxcomp[aa][off]*(int32_t)cfo[l<<1])>>15) - ((rxcomp[aa][1+off]*(int32_t)cfo[1+(l<<1)])>>15);
tmp_im = ((rxcomp[aa][off]*(int32_t)cfo[1+(l<<1)])>>15) + ((rxcomp[aa][1+off]*(int32_t)cfo[(l<<1)])>>15);
stat_re += (((tmp_re*chest_re)>>15) + ((tmp_im*chest_im)>>15))/4;
stat_im += (((tmp_re*chest_im)>>15) - ((tmp_im*chest_re)>>15))/4;
stat_re += (((tmp_re*chest0_re[aa][re])>>log2_maxh) + ((tmp_im*chest0_im[aa][re])>>log2_maxh));
stat_im += (((tmp_re*chest0_im[aa][re])>>log2_maxh) - ((tmp_im*chest0_re[aa][re])>>log2_maxh));
off+=2;
#ifdef DEBUG_PUCCH_RX
printf("[eNB] PUCCH subframe %d (%d,%d) => (%d,%d) x (%d,%d) : (%d,%d)\n",subframe,l,re,
printf("[eNB] PUCCH subframe %d (%d,%d) => (%d,%d) x (%d,%d) : (%d,%d) => (%d,%d)\n",subframe,l,re,
rxcomp[aa][off],rxcomp[aa][1+off],
cfo[l<<1],cfo[1+(l<<1)],
tmp_re,tmp_im,
stat_re,stat_im);
#endif
}
// first slot, right of RS
for (l=(nsymb>>1)-2; l<(nsymb>>1); l++) {
off=(re<<1) + (24*l);
tmp_re = ((rxcomp[aa][off]*(int32_t)cfo[l<<1])>>15) - ((rxcomp[aa][1+off]*(int32_t)cfo[1+(l<<1)])>>15);
tmp_im = ((rxcomp[aa][off]*(int32_t)cfo[1+(l<<1)])>>15) + ((rxcomp[aa][1+off]*(int32_t)cfo[(l<<1)])>>15);
stat_re += (((tmp_re*chest_re)>>15) + ((tmp_im*chest_im)>>15))/4;
stat_im += (((tmp_re*chest_im)>>15) - ((tmp_im*chest_re)>>15))/4;
stat_re += (((tmp_re*chest0_re[aa][re])>>log2_maxh) + ((tmp_im*chest0_im[aa][re])>>log2_maxh));
stat_im += (((tmp_re*chest0_im[aa][re])>>log2_maxh) - ((tmp_im*chest0_re[aa][re])>>log2_maxh));
off+=2;
#ifdef DEBUG_PUCCH_RX
printf("[eNB] PUCCH subframe %d (%d,%d) => (%d,%d) x (%d,%d) : (%d,%d)\n",subframe,l,re,
printf("[eNB] PUCCH subframe %d (%d,%d) => (%d,%d) x (%d,%d) : (%d,%d) => (%d,%d)\n",subframe,l,re,
rxcomp[aa][off],rxcomp[aa][1+off],
cfo[l<<1],cfo[1+(l<<1)],
tmp_re,tmp_im,
stat_re,stat_im);
#endif
}
chest_re=0;
chest_im=0;
// channel estimate for second slot
for (l=2; l<(nsymb>>1)-2; l++) {
off=(re<<1) + (24*l) + (nsymb>>1)*24;
chest_re += (((rxcomp[aa][off]*(int32_t)cfo[l<<1])>>15) - ((rxcomp[aa][1+off]*(int32_t)cfo[1+(l<<1)])>>15))/chL;
chest_im += (((rxcomp[aa][off]*(int32_t)cfo[1+(l<<1)])>>15) + ((rxcomp[aa][1+off]*(int32_t)cfo[(l<<1)])>>15))/chL;
}
#ifdef DEBUG_PUCCH_RX
printf("[eNB] PUCCH subframe %d l %d re %d chest2 => (%d,%d)\n",subframe,l,re,
chest_re,chest_im);
printf("[eNB] PUCCH subframe %d chest1[%d][%d] => (%d,%d)\n",subframe,aa,re,
chest0_re[aa][re],chest0_im[aa][re]);
#endif
// second slot, left of RS
for (l=0; l<2; l++) {
off=(re<<1) + (24*l) + (nsymb>>1)*24;
tmp_re = ((rxcomp[aa][off]*(int32_t)cfo[l<<1])>>15) - ((rxcomp[aa][1+off]*(int32_t)cfo[1+(l<<1)])>>15);
tmp_im = ((rxcomp[aa][off]*(int32_t)cfo[1+(l<<1)])>>15) + ((rxcomp[aa][1+off]*(int32_t)cfo[(l<<1)])>>15);
stat_re += (((tmp_re*chest_re)>>15) + ((tmp_im*chest_im)>>15))/4;
stat_im += (((tmp_re*chest_im)>>15) - ((tmp_im*chest_re)>>15))/4;
stat_re += (((tmp_re*chest1_re[aa][re])>>log2_maxh) + ((tmp_im*chest1_im[aa][re])>>log2_maxh));
stat_im += (((tmp_re*chest1_im[aa][re])>>log2_maxh) - ((tmp_im*chest1_re[aa][re])>>log2_maxh));
off+=2;
#ifdef DEBUG_PUCCH_RX
printf("[PHY][eNB] PUCCH subframe %d (%d,%d) => (%d,%d) x (%d,%d) : (%d,%d)\n",subframe,l,re,
printf("[PHY][eNB] PUCCH subframe %d (%d,%d) => (%d,%d) x (%d,%d) : (%d,%d) => (%d,%d)\n",subframe,l,re,
rxcomp[aa][off],rxcomp[aa][1+off],
cfo[l<<1],cfo[1+(l<<1)],
tmp_re,tmp_im,
stat_re,stat_im);
#endif
}
// second slot, right of RS
for (l=(nsymb>>1)-2; l<(nsymb>>1)-1; l++) {
off=(re<<1) + (24*l) + (nsymb>>1)*24;
tmp_re = ((rxcomp[aa][off]*(int32_t)cfo[l<<1])>>15) - ((rxcomp[aa][1+off]*(int32_t)cfo[1+(l<<1)])>>15);
tmp_im = ((rxcomp[aa][off]*(int32_t)cfo[1+(l<<1)])>>15) + ((rxcomp[aa][1+off]*(int32_t)cfo[(l<<1)])>>15);
stat_re += (((tmp_re*chest_re)>>15) + ((tmp_im*chest_im)>>15))/4;
stat_im += (((tmp_re*chest_im)>>15) - ((tmp_im*chest_re)>>15))/4;
stat_re += (((tmp_re*chest1_re[aa][re])>>log2_maxh) + ((tmp_im*chest1_im[aa][re])>>log2_maxh));
stat_im += (((tmp_re*chest1_im[aa][re])>>log2_maxh) - ((tmp_im*chest1_re[aa][re])>>log2_maxh));
off+=2;
#ifdef DEBUG_PUCCH_RX
printf("[PHY][eNB] PUCCH subframe %d (%d,%d) => (%d,%d) x (%d,%d) : (%d,%d)\n",subframe,l,re,
printf("[PHY][eNB] PUCCH subframe %d (%d,%d) => (%d,%d) x (%d,%d) : (%d,%d) => (%d,%d)\n",subframe,l,re,
rxcomp[aa][off],rxcomp[aa][1+off],
cfo[l<<1],cfo[1+(l<<1)],
tmp_re,tmp_im,
stat_re,stat_im);
#endif
}
......@@ -2392,7 +2426,7 @@ uint32_t rx_pucch(PHY_VARS_eNB *eNB,
LOG_I(PHY,"PUCCH 1a/b: subframe %d : stat %d,%d (pos %d)\n",subframe,stat_re,stat_im,
(subframe<<10) + (eNB->pucch1ab_stats_cnt[UE_id][subframe]));
LOG_I(PHY,"PUCCH 1a/b: subframe %d : sigma2_dB %d, stat_max %d, pucch1_thres %d\n",subframe,sigma2_dB,dB_fixed(stat_max),pucch1_thres);
eNB->pucch1ab_stats[UE_id][(subframe<<11) + 2*(eNB->pucch1ab_stats_cnt[UE_id][subframe])] = (stat_re);
eNB->pucch1ab_stats[UE_id][(subframe<<11) + 1+2*(eNB->pucch1ab_stats_cnt[UE_id][subframe])] = (stat_im);
......
openair2/LAYER2/MAC/eNB_scheduler_RA.c
View file @ 539c8de2
......@@ -1118,7 +1118,7 @@ void check_Msg4_retransmission(module_id_t module_idP,int CC_idP,frame_t frameP,
} // Msg4 frame/subframe
} // regular LTE case
} else {
LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d : Msg4 acknowledged\n",module_idP,CC_idP,frameP,subframeP);
LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d : Msg4 acknowledged\n",module_idP,CC_idP,frameP,subframeP);
RA_template->wait_ack_Msg4=0;
RA_template->RA_active=FALSE;
UE_id = find_UE_id(module_idP,RA_template->rnti);
......
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