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integration of mpdcch format 2,3,5, wired for format 5 only. integration of mpdcch dmrs signals.

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This commit is contained in:
Raymond Knopp
2017-11-05 12:27:46 -08:00
parent e4f82c5e95
commit d135627884
4 changed files with 213 additions and 38 deletions
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openair1/PHY/INIT/lte_init.c
+1 -1
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@@ -229,7 +229,7 @@ phy_config_request (PHY_Config_t * phy_config)
fp->prach_emtc_config_common.prach_ConfigInfo.prach_ConfigIndex[3],
fp->prach_emtc_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
fp->prach_emtc_config_common.prach_ConfigInfo.highSpeedFlag, fp->frame_type, RC.eNB[Mod_id][CC_id]->X_u_br[0]);
init_mpdcch5tab_normal_regular_subframe_evenNRBDL (RC.eNB[Mod_id][CC_id],3);
init_mpdcch(RC.eNB[Mod_id][CC_id]);
}
}
#endif
openair1/PHY/LTE_TRANSPORT/dci.c
+1 -1
View File
@@ -210,7 +210,7 @@ uint8_t *generate_dci0(uint8_t *dci,
uint8_t *e,
uint8_t DCI_LENGTH,
uint8_t aggregation_level,
uint8_r bitsperCCE,
uint8_t bitsperCCE,
uint16_t rnti)
{
openair1/PHY/LTE_TRANSPORT/edci.c
+210 -35
View File
@@ -102,18 +102,22 @@ mpdcch_scrambling (LTE_DL_FRAME_PARMS * frame_parms, mDCI_ALLOC_t * mdci, uint16
// 9 symbols without DMRS = 9*12*6 REs = 648 REs
// 4 symbols with DMRS (3 REs stolen per symbol = 4*9*6 REs = 216 REs
// Total = 648+216 = 864 REs = 1728 bits
static uint16_t mpdcch5ss1tab[864];
static uint16_t mpdcch5ss1p107108tab[864];
static uint16_t mpdcch5ss1p109110tab[864];
void init_mpdcch5ss1p107108tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *eNB) {
void init_mpdcch5ss1tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *eNB) {
int l,k,kmod,re;
LOG_I(PHY,"Inititalizing mpdcch5tab for normal prefix, normal prefix, no PSS/SSS/PBCH, even N_RB_DL\n");
LOG_I(PHY,"Inititalizing mpdcchss15tab for normal prefix, normal prefix, no PSS/SSS/PBCH, even N_RB_DL\n");
for (l=1,re=0;l<14;l++) {
for (k=0;k<72;k++){
kmod = k % 12;
if (((l!=5) && (l!=6) && (l!=12) && (l!=13)) ||
(((l==5)||(l==6)||(l==12)||(l==13))&&(kmod!=0)&&(kmod!=5)&&(kmod!=10)))
mpdcch5tab[re++]=(l*eNB->frame_parms.ofdm_symbol_size)+k;
(((l==5)||(l==6)||(l==12)||(l==13))&&(kmod!=0)&&(kmod!=5)&&(kmod!=10))) {
mpdcch5ss1p109110tab[re]=(l*eNB->frame_parms.ofdm_symbol_size)+k;
mpdcch5ss1p107108tab[re]=1+mpdcch5ss1p109110tab[re];
re++;
}
}
}
AssertFatal(re==864,"RE count not equal to 864\n");
@@ -121,44 +125,78 @@ void init_mpdcch5ss1p107108tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *e
// this table is the allocation of modulated MPDCCH format 5 symbols to REs, antenna ports 107,108
// start symbol is symbol 2 and L'=24 => all 6 PRBs in the set
// 8 symbols without DMRS = 9*12*6 REs = 576 REs
// 8 symbols without DMRS = 8*12*6 REs = 576 REs
// 4 symbols with DMRS (3 REs stolen per symbol = 4*9*6 REs = 216 REs
// Total = 576+216 = 792 REs = 1584 bits
static uint16_t mpdcch5ss2tab[864];
void init_mpdcch5ss2p107108tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *eNB) {
static uint16_t mpdcch5ss2p107108tab[792];
static uint16_t mpdcch5ss2p109110tab[792];
void init_mpdcch5ss2tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *eNB) {
int l,k,kmod,re;
LOG_I(PHY,"Inititalizing mpdcch5tab for normal prefix, normal prefix, no PSS/SSS/PBCH, even N_RB_DL\n");
LOG_I(PHY,"Inititalizing mpdcch5ss2tab for normal prefix, normal prefix, no PSS/SSS/PBCH, even N_RB_DL\n");
for (l=2,re=0;l<14;l++) {
for (k=0;k<72;k++){
kmod = k % 12;
if (((l!=5) && (l!=6) && (l!=12) && (l!=13)) ||
(((l==5)||(l==6)||(l==12)||(l==13))&&(kmod!=0)&&(kmod!=5)&&(kmod!=10)))
mpdcch5tab[re++]=(l*eNB->frame_parms.ofdm_symbol_size)+k;
(((l==5)||(l==6)||(l==12)||(l==13))&&(kmod!=0)&&(kmod!=5)&&(kmod!=10))) {
mpdcch5ss2p109110tab[re]=(l*eNB->frame_parms.ofdm_symbol_size)+k;
mpdcch5ss2p107108tab[re]=1+mpdcch5ss2p109110tab[re];
re++;
}
}
}
AssertFatal(re==792,"RE count not equal to 792\n");
}
// this table is the allocation of modulated MPDCCH format 5 symbols to REs, antenna ports 107,108
// start symbol is symbol 3 and L'=24 => all 6 PRBs in the set
// 7 symbols without DMRS = 7*12*6 REs = 504 REs
// 4 symbols with DMRS (3 REs stolen per symbol = 4*9*6 REs = 216 REs
// Total = 504+216 = 720 REs = 1440 bits
static uint16_t mpdcch5ss3p107108tab[720];
static uint16_t mpdcch5ss3p109110tab[720];
void init_mpdcch5ss3tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *eNB) {
int l,k,kmod,re;
LOG_I(PHY,"Inititalizing mpdcch5ss3tab for normal prefix, normal prefix, no PSS/SSS/PBCH, even N_RB_DL\n");
for (l=3,re=0;l<14;l++) {
for (k=0;k<72;k++){
kmod = k % 12;
if (((l!=5) && (l!=6) && (l!=12) && (l!=13)) ||
(((l==5)||(l==6)||(l==12)||(l==13))&&(kmod!=0)&&(kmod!=5)&&(kmod!=10))) {
mpdcch5ss3p109110tab[re]=(l*eNB->frame_parms.ofdm_symbol_size)+k;
mpdcch5ss3p107108tab[re]=1+mpdcch5ss3p109110tab[re];
re++;
}
}
}
AssertFatal(re==720,"RE count not equal to 792\n");
}
// this table is the allocation of modulated MPDCCH format 3 symbols to REs, antenna ports 107,108
// with start symbol 1, using L'=16 => first 4 PRBs in the set
// 8 symbols without DMRS = 9*12*4 REs = 432 REs
// 4 symbols with DMRS (3 REs stolen per symbol = 4*9*4 REs = 144 REs
// Total = 432+144 = 576 = 16CCE*36RE/CCE
static uint16_t mpdcch3ss1tab[864];
static uint16_t mpdcch3ss1p107108tab[576];
static uint16_t mpdcch3ss1p109110tab[576];
void init_mpdcch3ss1tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *eNB) {
int l,k,kmod,re;
LOG_I(PHY,"Inititalizing mpdcch3ss2tab for normal prefix, normal prefix, no PSS/SSS/PBCH, even N_RB_DL\n");
LOG_I(PHY,"Inititalizing mpdcch3ss1tab for normal prefix, normal prefix, no PSS/SSS/PBCH, even N_RB_DL\n");
for (l=1,re=0;l<14;l++) {
for (k=0;k<48;k++){
kmod = k % 12;
if (((l!=5) && (l!=6) && (l!=12) && (l!=13)) ||
(((l==5)||(l==6)||(l==12)||(l==13))&&(kmod!=0)&&(kmod!=5)&&(kmod!=10)))
mpdcch5tab[re++]=(l*eNB->frame_parms.ofdm_symbol_size)+k;
(((l==5)||(l==6)||(l==12)||(l==13))&&(kmod!=0)&&(kmod!=5)&&(kmod!=10))) {
mpdcch3ss1p109110tab[re]=(l*eNB->frame_parms.ofdm_symbol_size)+k;
mpdcch3ss1p107108tab[re]=1+mpdcch3ss1p109110tab[re];
re++;
}
}
}
AssertFatal(re==864,"RE count not equal to 864\n");
AssertFatal(re==576,"RE count not equal to 864\n");
}
// this table is the allocation of modulated MPDCCH format 2 symbols to REs, antenna ports 107,108
@@ -166,23 +204,29 @@ void init_mpdcch3ss1tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *eNB) {
// 8 symbols without DMRS = 9*12*2 REs = 216 REs
// 4 symbols with DMRS (3 REs stolen per symbol = 4*9*2 REs = 72 REs
// Total = 216+72 = 288 = 8CCE*36RE/CCE
static uint16_t mpdcch2ss1tab[864];
static uint16_t mpdcch2ss1p107108tab[288];
static uint16_t mpdcch2ss1p109110tab[288];
void init_mpdcch2ss1tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *eNB) {
int l,k,kmod,re;
LOG_I(PHY,"Inititalizing mpdcch3ss2tab for normal prefix, normal prefix, no PSS/SSS/PBCH, even N_RB_DL\n");
LOG_I(PHY,"Inititalizing mpdcch2ss1tab for normal prefix, normal prefix, no PSS/SSS/PBCH, even N_RB_DL\n");
for (l=1,re=0;l<14;l++) {
for (k=0;k<48;k++){
kmod = k % 12;
if (((l!=5) && (l!=6) && (l!=12) && (l!=13)) ||
(((l==5)||(l==6)||(l==12)||(l==13))&&(kmod!=0)&&(kmod!=5)&&(kmod!=10)))
mpdcch5tab[re++]=(l*eNB->frame_parms.ofdm_symbol_size)+k;
(((l==5)||(l==6)||(l==12)||(l==13))&&(kmod!=0)&&(kmod!=5)&&(kmod!=10))) {
mpdcch2ss1p109110tab[re]=(l*eNB->frame_parms.ofdm_symbol_size)+k;
mpdcch2ss1p107108tab[re]=1+mpdcch2ss1p109110tab[re];
re++;
}
}
}
AssertFatal(re==864,"RE count not equal to 864\n");
AssertFatal(re==288,"RE count not equal to 288\n");
}
extern uint8_t *generate_dci0(uint8_t *dci,
uint8_t *e,
uint8_t DCI_LENGTH,
@@ -190,6 +234,27 @@ extern uint8_t *generate_dci0(uint8_t *dci,
uint8_t aggregation_level,
uint16_t rnti);
uint16_t mpdcch_dmrs_tab[12*6];
void init_mpdcch_dmrs_tab(uint16_t oss) {
int re = 5*oss;
int pos = 0;
for (int symb=0;symb<4;symb++) {
for (int prb=0;prb<6;prb++,re+=12) {
mpdcch_dmrs_tab[pos++] = re;
mpdcch_dmrs_tab[pos++] = re+5;
mpdcch_dmrs_tab[pos++] = re+10;
}
if (symb == 0) re=6*oss;
else if (symb == 1) re=12*oss;
else if (symb == 2) re=13*oss;
}
}
void
generate_mdci_top (PHY_VARS_eNB * eNB, int frame, int subframe, int16_t amp, int32_t ** txdataF)
{
@@ -201,18 +266,20 @@ generate_mdci_top (PHY_VARS_eNB * eNB, int frame, int subframe, int16_t amp, int
int i;
int gain_lin_QPSK;
uint8_t bitsperCCE;
uint16_t *mpdcchtab;
uint32_t x1, x2, s = 0;
uint8_t Nacc = 4;
uint16_t j0, j, idelta;
uint16_t i0;
int off;
// Assumption: only handle a single MPDCCH per narrowband
if (mpdcch->start_symbol == 1)
bitsperCCE = 72;
else if (mpdcch->start_symbol == 2)
bitsperCCE = 66;
else if (mpdcch->start_symbol == 3)
bitsperCCE = 60;
for (i=0;i<mpdcch->num_dci;i++) {
mdci = &mpdcch->mdci_alloc[i];
AssertFatal (fp->frame_type == FDD, "TDD is not yet supported for MPDCCH\n");
AssertFatal (fp->Ncp == NORMAL, "Extended Prefix not yet supported for MPDCCH\n");
AssertFatal (mdci->L <= 24, "L is %d\n", mdci->L);
@@ -221,12 +288,47 @@ generate_mdci_top (PHY_VARS_eNB * eNB, int frame, int subframe, int16_t amp, int
AssertFatal (mdci->number_of_prb_pairs == 6, "2 or 4 PRB pairs not support yet for MPDCCH\n");
AssertFatal (mdci->reps > 0, "mdci->reps==0\n");
// 9 REs/EREG * 4 EREG/ECCE => 36 REs/ECCE => 72 bits/ECCE, so same as regular PDCCH channel encoding
// These are to avoid unimplemented things
AssertFatal (mdci->reps == 1, "number of repetitions (%d) must be one for now\n",mdci->reps);
AssertFatal (mdci->ce_mode != 1, "CE mode B not activataed yet\n");
AssertFatal (mdci->L != 24, "Only 2+4 and aggregation 24 for now\n");
i0 = mdci->i0;
// antenna index
int a_index = mdci->rnti & 3;
if ((mdci->start_symbol == 1) && (a_index<2)) {
mpdcchtab = mpdcch5ss1p107108tab;
bitsperCCE = 72;
}
else if ((mdci->start_symbol == 1) && (a_index>1)) {
mpdcchtab = mpdcch5ss1p109110tab;
bitsperCCE = 72;
}
else if ((mdci->start_symbol == 2) && (a_index<2)) {
mpdcchtab = mpdcch5ss2p107108tab;
bitsperCCE = 66;
}
else if ((mdci->start_symbol == 2) && (a_index>1)) {
mpdcchtab = mpdcch5ss2p109110tab;
bitsperCCE = 66;
}
else if ((mdci->start_symbol == 3) && (a_index<2)) {
mpdcchtab = mpdcch5ss2p107108tab;
bitsperCCE = 60;
}
else if ((mdci->start_symbol == 3) && (a_index<2)) {
mpdcchtab = mpdcch5ss2p109110tab;
bitsperCCE = 60;
}
else
AssertFatal(1==0,"Illegal combination start_symbol %d, a_index %d\n",mdci->start_symbol,a_index);
// Note: We only have to run this every Nacc subframes during repetitions, data and scrambling are constant, but we do it for now to simplify during testing
generate_dci0(mdci->dci_pdu,
mpdcch->e+(72*mdci->firstCCE),
mpdcch->e+(bitsperCCE*mdci->firstCCE),
mdci->dci_length,
bitsperCCE,
mdci->L,
@@ -261,8 +363,27 @@ generate_mdci_top (PHY_VARS_eNB * eNB, int frame, int subframe, int16_t amp, int
// first RE of narrowband
// mpdcchtab5 below contains the mapping from each coded symbol to relative RE avoiding the DMRS
int nb_i0;
switch (fp->N_RB_DL) {
int re_offset = fp->first_carrier_offset + 1 + ((fp->N_RB_DL == 100) ? 1 : 0) + mdci->narrowband * 12 * 6;
case 6:
case 25:
nb_i0=0;
break;
case 15:
case 50:
case 75:
nb_i0=1;
break;
case 100:
nb_i0=2;
break;
default:
AssertFatal(1==0,"Illegal N_RB_DL %d\n",fp->N_RB_DL);
break;
}
int re_offset = fp->first_carrier_offset + (12*nb_i0) + mdci->narrowband * 12 * 6;
if (re_offset > fp->ofdm_symbol_size)
re_offset -= (fp->ofdm_symbol_size - 1);
int32_t *txF = &txdataF[0][re_offset];
@@ -274,10 +395,64 @@ generate_mdci_top (PHY_VARS_eNB * eNB, int frame, int subframe, int16_t amp, int
e_ptr++;
((int16_t *) & yIQ)[1] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
e_ptr++;
txF[mpdcch5tab[i + (36 * mdci->firstCCE)]] = yIQ;
txF[mpdcchtab[i + ((bitsperCCE>>1) * mdci->firstCCE)]] = yIQ;
LOG_I(PHY,"mpdcch pos %d: %d => (%d,%d)\n",i,mpdcchtab[i + ((bitsperCCE>>2) * mdci->firstCCE)],((int16_t *) & yIQ)[0],((int16_t *) & yIQ)[1]);
}
if (a_index>1) off=0;
else off=1;
// pilot scrambling initiatlization (note: this is for a single repetition)
// x1 is set in lte_gold_generic
// rule for BL/CE UEs from Section 6.10.3A.1 in 36.211
if ((mdci->rnti == 0xFFFE) || (mdci->ce_mode == 2)) // CEModeB Note: also for mdci->rnti==SC_RNTI
Nacc = fp->frame_type == FDD ? 4 : 10;
else
Nacc = 1;
if (fp->frame_type == FDD || Nacc == 1)
idelta = 0;
else
idelta = Nacc - 2;
j0 = (i0 + idelta) / Nacc;
j = (i - i0) / Nacc;
uint32_t a = ((((j0 + j) * Nacc) % 10)+1);
uint32_t b = ((mdci->dmrs_scrambling_init<<1)+1) << 16;
x2 = a*b;
LOG_I(PHY,"mpdcch_dmrs cinit %d\n",x2);
// add MPDCCH pilots
int reset = 1;
for (i=0; i < (24*6) ; i+=2) {
if ((i & 0x1f) == 0) {
s = lte_gold_generic (&x1, &x2, reset);
reset = 0;
}
((int16_t *) & yIQ)[0] = (((s>>(i & 0x1f))&1) == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
((int16_t *) & yIQ)[1] = (((s>>((i+1) & 0x1f))&1) == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
txF[off+mpdcch_dmrs_tab[(i>>1)]] = yIQ;
LOG_I(PHY,"mpdcch_dmrs pos %d: %d => (%d,%d)\n",i,mpdcch_dmrs_tab[(i>>1)],((int16_t *) & yIQ)[0],((int16_t *) & yIQ)[1]);
}
}
}
void init_mpdcch(PHY_VARS_eNB *eNB) {
init_mpdcch5ss1tab_normal_regular_subframe_evenNRBDL(eNB);
init_mpdcch5ss2tab_normal_regular_subframe_evenNRBDL(eNB);
init_mpdcch5ss3tab_normal_regular_subframe_evenNRBDL(eNB);
init_mpdcch3ss1tab_normal_regular_subframe_evenNRBDL(eNB);
init_mpdcch2ss1tab_normal_regular_subframe_evenNRBDL(eNB);
init_mpdcch_dmrs_tab(eNB->frame_parms.ofdm_symbol_size);
}
#endif
openair1/PHY/LTE_TRANSPORT/proto.h
+1 -1
View File
@@ -1678,7 +1678,7 @@ void init_ul_hopping(LTE_DL_FRAME_PARMS *frame_parms);
int init_ue_paging_info(PHY_VARS_UE *ue, long defaultPagingCycle, long nB);
#ifdef Rel14
void init_mpdcch5tab_normal_regular_subframe_evenNRBDL(PHY_VARS_eNB *eNB,int l_MPDCCH_start);
void init_mpdcch(PHY_VARS_eNB *eNB);
#endif
int32_t compareints (const void * a, const void * b);