maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge remote-tracking branch 'origin/develop-sib1-update' into integration_2021_wk05

Browse Source
This commit is contained in:
hardy
2021-02-02 15:40:22 +01:00
parent 1d6eea64a4 62bc47c820
commit c00b44028b
12 changed files with 643 additions and 109 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/NR_TRANSPORT/nr_dci.c
+63 -45
View File
@@ -102,8 +102,7 @@ void nr_generate_dci(PHY_VARS_gNB *gNB,
LOG_D(PHY, "Coreset rb_offset %d, nb_rb %d\n",rb_offset,n_rb);
LOG_D(PHY, "Coreset starting subcarrier %d on symbol %d (%d symbols)\n", cset_start_sc, cset_start_symb, cset_nsymb);
// DMRS length is per OFDM symbol
uint32_t dmrs_length = (pdcch_pdu_rel15->CceRegMappingType == NFAPI_NR_CCE_REG_MAPPING_NON_INTERLEAVED)?
(n_rb*6) : (pdcch_pdu_rel15->dci_pdu.AggregationLevel[d]*36/cset_nsymb); //2(QPSK)*3(per RB)*6(REG per CCE)
uint32_t dmrs_length = n_rb*6; //2(QPSK)*3(per RB)*6(REG per CCE)
uint32_t encoded_length = pdcch_pdu_rel15->dci_pdu.AggregationLevel[d]*108; //2(QPSK)*9(per RB)*6(REG per CCE)
LOG_D(PHY, "DMRS length per symbol %d\t DCI encoded length %d (precoder_granularity %d,reg_mapping %d)\n", dmrs_length, encoded_length,pdcch_pdu_rel15->precoderGranularity,pdcch_pdu_rel15->CceRegMappingType);
dmrs_length += rb_offset*6; // To accommodate more DMRS symbols in case of rb offset
@@ -164,62 +163,81 @@ void nr_generate_dci(PHY_VARS_gNB *gNB,
printf("i %d mod_dci %d %d\n", i, mod_dci[i<<1], mod_dci[(i<<1)+1] );
#endif
/// Resource mapping
if (cset_start_sc >= frame_parms.ofdm_symbol_size)
cset_start_sc -= frame_parms.ofdm_symbol_size;
/*Reorder REG list for a freq first mapping*/
uint8_t reg_idx0 = pdcch_pdu_rel15->dci_pdu.CceIndex[d]*NR_NB_REG_PER_CCE;
uint8_t nb_regs = pdcch_pdu_rel15->dci_pdu.AggregationLevel[d]*NR_NB_REG_PER_CCE;
// Get cce_list indices by reg_idx in ascending order
int reg_list_index = 0;
int reg_list_order[NR_MAX_PDCCH_AGG_LEVEL] = {};
for (int p = 0; p < NR_MAX_PDCCH_AGG_LEVEL; p++) {
for(int p2 = 0; p2 < pdcch_pdu_rel15->dci_pdu.AggregationLevel[d]; p2++) {
if(gNB->cce_list[d][p2].reg_list[0].reg_idx == p * NR_NB_REG_PER_CCE) {
reg_list_order[reg_list_index] = p2;
reg_list_index++;
break;
}
}
}
/*Mapping the encoded DCI along with the DMRS */
for (int reg_idx=reg_idx0; reg_idx<(nb_regs+reg_idx0); reg_idx++) {
k = cset_start_sc + (12*reg_idx/cset_nsymb);
if (k >= frame_parms.ofdm_symbol_size)
k -= frame_parms.ofdm_symbol_size;
l = cset_start_symb + ((reg_idx/cset_nsymb)%cset_nsymb);
// dmrs index depends on reference point for k according to 38.211 7.4.1.3.2
if (pdcch_pdu_rel15->CoreSetType == NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG)
dmrs_idx = (reg_idx/cset_nsymb)*3;
else
dmrs_idx = ((reg_idx/cset_nsymb)+rb_offset)*3;
k_prime = 0;
for (int m=0; m<NR_NB_SC_PER_RB; m++) {
if ( m == (k_prime<<2)+1) { // DMRS if not already mapped
//if (pdcch_pdu_rel15->CceRegMappingType == NFAPI_NR_CCE_REG_MAPPING_NON_INTERLEAVED) {
((int16_t *)txdataF)[(l*frame_parms.ofdm_symbol_size + k)<<1] = (amp * mod_dmrs[l][dmrs_idx<<1]) >> 15;
((int16_t *)txdataF)[((l*frame_parms.ofdm_symbol_size + k)<<1) + 1] = (amp * mod_dmrs[l][(dmrs_idx<<1) + 1]) >> 15;
for (int cce_count = 0; cce_count < pdcch_pdu_rel15->dci_pdu.AggregationLevel[d]; cce_count ++) {
int8_t cce_idx = reg_list_order[cce_count];
for (int reg_in_cce_idx = 0; reg_in_cce_idx < NR_NB_REG_PER_CCE; reg_in_cce_idx++) {
k = cset_start_sc + gNB->cce_list[d][cce_idx].reg_list[reg_in_cce_idx].start_sc_idx;
if (k >= frame_parms.ofdm_symbol_size)
k -= frame_parms.ofdm_symbol_size;
l = cset_start_symb + gNB->cce_list[d][cce_idx].reg_list[reg_in_cce_idx].symb_idx;
// dmrs index depends on reference point for k according to 38.211 7.4.1.3.2
if (pdcch_pdu_rel15->CoreSetType == NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG)
dmrs_idx =gNB->cce_list[d][cce_idx].reg_list[reg_in_cce_idx].reg_idx * 3;
else
dmrs_idx = (gNB->cce_list[d][cce_idx].reg_list[reg_in_cce_idx].reg_idx + rb_offset) * 3;
k_prime = 0;
for (int m = 0; m < NR_NB_SC_PER_RB; m++) {
if (m == (k_prime << 2) + 1) { // DMRS if not already mapped
((int16_t *) txdataF)[(l * frame_parms.ofdm_symbol_size + k) << 1] =
(amp * mod_dmrs[l][dmrs_idx << 1]) >> 15;
((int16_t *) txdataF)[((l * frame_parms.ofdm_symbol_size + k) << 1) + 1] =
(amp * mod_dmrs[l][(dmrs_idx << 1) + 1]) >> 15;
#ifdef DEBUG_PDCCH_DMRS
printf("PDCCH DMRS: l %d position %d => (%d,%d)\n",l,k,((int16_t *)txdataF)[(l*frame_parms.ofdm_symbol_size + k)<<1],
((int16_t *)txdataF)[((l*frame_parms.ofdm_symbol_size + k)<<1)+1]);
#endif
dmrs_idx++;
//}
k_prime++;
} else { // DCI payload
((int16_t *)txdataF)[(l*frame_parms.ofdm_symbol_size + k)<<1] = (amp * mod_dci[dci_idx<<1]) >> 15;
((int16_t *)txdataF)[((l*frame_parms.ofdm_symbol_size + k)<<1) + 1] = (amp * mod_dci[(dci_idx<<1) + 1]) >> 15;
dmrs_idx++;
k_prime++;
} else { // DCI payload
((int16_t *) txdataF)[(l * frame_parms.ofdm_symbol_size + k) << 1] = (amp * mod_dci[dci_idx << 1]) >> 15;
((int16_t *) txdataF)[((l * frame_parms.ofdm_symbol_size + k) << 1) + 1] =
(amp * mod_dci[(dci_idx << 1) + 1]) >> 15;
#ifdef DEBUG_DCI
printf("PDCCH: l %d position %d => (%d,%d)\n",l,k,((int16_t *)txdataF)[(l*frame_parms.ofdm_symbol_size + k)<<1],
((int16_t *)txdataF)[((l*frame_parms.ofdm_symbol_size + k)<<1)+1]);
#endif
dci_idx++;
}
k++;
if (k >= frame_parms.ofdm_symbol_size)
k -= frame_parms.ofdm_symbol_size;
} // m
} // reg_idx
dci_idx++;
}
k++;
if (k >= frame_parms.ofdm_symbol_size)
k -= frame_parms.ofdm_symbol_size;
} // m
} // reg_in_cce_idx
} // cce_count
LOG_I(PHY, "DCI: payloadSize = %d | payload = %llx\n",
*pdcch_pdu_rel15->dci_pdu.PayloadSizeBits,*(unsigned long long*)pdcch_pdu_rel15->dci_pdu.Payload);
openair1/PHY/NR_UE_TRANSPORT/dci_nr.c
+54 -24
View File
@@ -81,12 +81,14 @@
void nr_pdcch_demapping_deinterleaving(uint32_t *llr,
uint32_t *z,
NR_DL_FRAME_PARMS *frame_parms,
uint8_t coreset_time_dur,
uint32_t coreset_nbr_rb,
uint8_t reg_bundle_size_L,
uint8_t coreset_interleaver_size_R,
uint8_t n_shift) {
uint8_t n_shift,
uint8_t number_of_candidates,
uint16_t *CCE,
uint8_t *L) {
/*
* This function will do demapping and deinterleaving from llr containing demodulated symbols
* Demapping will regroup in REG and bundles
@@ -122,35 +124,61 @@ void nr_pdcch_demapping_deinterleaving(uint32_t *llr,
| REG 0 (bundle 0) bundle 0 bundle 0
*/
int c=0,r=0;
uint16_t bundle_j=0, f_bundle_j=0,f_reg=0;
uint32_t coreset_C=0;
int c = 0, r = 0;
uint16_t bundle_j = 0, f_bundle_j = 0, f_reg = 0;
uint32_t coreset_C = 0;
uint16_t index_z, index_llr;
int coreset_interleaved = 0;
if (reg_bundle_size_L!=0) { // interleaving will be done only if reg_bundle_size_L != 0
coreset_interleaved=1;
coreset_C = (uint32_t)((coreset_nbr_rb * coreset_time_dur)/ (coreset_interleaver_size_R*reg_bundle_size_L));
if (reg_bundle_size_L != 0) { // interleaving will be done only if reg_bundle_size_L != 0
coreset_interleaved = 1;
coreset_C = (uint32_t) ((coreset_nbr_rb * coreset_time_dur) / (coreset_interleaver_size_R * reg_bundle_size_L));
} else {
reg_bundle_size_L=6;
reg_bundle_size_L = 6;
}
for(int reg=0; reg<((coreset_nbr_rb*coreset_time_dur)); reg++) {
if ((reg%reg_bundle_size_L) == 0) {
int f_bundle_j_list[NR_MAX_PDCCH_AGG_LEVEL] = {};
for (int reg = 0; reg < ((coreset_nbr_rb * coreset_time_dur)); reg++) {
if ((reg % reg_bundle_size_L) == 0) {
if (r == coreset_interleaver_size_R) {
r=0;
r = 0;
c++;
}
bundle_j = (c*coreset_interleaver_size_R)+r;
f_bundle_j = ((r*coreset_C)+c+n_shift)%((coreset_nbr_rb*coreset_time_dur)/reg_bundle_size_L);
bundle_j = (c * coreset_interleaver_size_R) + r;
f_bundle_j = ((r * coreset_C) + c + n_shift) % ((coreset_nbr_rb * coreset_time_dur) / reg_bundle_size_L);
if (coreset_interleaved==0) f_bundle_j=bundle_j;
if (coreset_interleaved == 0) f_bundle_j = bundle_j;
f_bundle_j_list[reg / 6] = f_bundle_j;
LOG_DNL("[r=%d,c=%d] bundle_j(%d) interleaved at f_bundle_j(%d)\n",r,c,bundle_j,f_bundle_j);
}
if ((reg % reg_bundle_size_L) == 0) r++;
}
f_reg = (f_bundle_j*reg_bundle_size_L)+(reg%reg_bundle_size_L);
// Get cce_list indices by reg_idx in ascending order
int f_bundle_j_list_id = 0;
int f_bundle_j_list_ord[NR_MAX_PDCCH_AGG_LEVEL] = {};
for (int c_id = 0; c_id < number_of_candidates; c_id++ ) {
f_bundle_j_list_id = CCE[c_id];
for (int p = 0; p < NR_MAX_PDCCH_AGG_LEVEL; p++) {
for (int p2 = CCE[c_id]; p2 < CCE[c_id] + L[c_id]; p2++) {
if (f_bundle_j_list[p2] == p) {
f_bundle_j_list_ord[f_bundle_j_list_id] = p;
f_bundle_j_list_id++;
break;
}
}
}
}
for(int reg=0; reg<((coreset_nbr_rb*coreset_time_dur)); reg++) {
f_reg = (f_bundle_j_list_ord[reg/6]*reg_bundle_size_L)+(reg%reg_bundle_size_L);
index_z = 9*reg;
index_llr = 9*((uint16_t)floor(f_reg/coreset_time_dur)+((f_reg%coreset_time_dur)*(coreset_nbr_rb)));
@@ -386,14 +414,14 @@ void nr_pdcch_extract_rbs_single(int32_t **rxdataF,
rxF=NULL;
// first we set initial conditions for pointer to rxdataF depending on the situation of the first RB within the CORESET (c_rb = n_BWP_start)
if ((c_rb < (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) == 0)) {
if (((c_rb + n_BWP_start) < (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) == 0)) {
//if RB to be treated is lower than middle system bandwidth then rxdataF pointed at (offset + c_br + symbol * ofdm_symbol_size): even case
rxF = &rxdataF[aarx][(frame_parms->first_carrier_offset + 12 * c_rb + (symbol * (frame_parms->ofdm_symbol_size)))+n_BWP_start*12];
LOG_DDD("in even case c_rb (%d) is lower than half N_RB_DL -> rxF = &rxdataF[aarx = (%d)][(frame_parms->first_carrier_offset + 12 * c_rb + (symbol * (frame_parms->ofdm_symbol_size))) = (%d)]\n",
c_rb,aarx,(frame_parms->first_carrier_offset + 12 * c_rb + (symbol * (frame_parms->ofdm_symbol_size))));
}
if ((c_rb >= (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) == 0)) {
if (((c_rb + n_BWP_start) >= (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) == 0)) {
// number of RBs is even and c_rb is higher than half system bandwidth (we don't skip DC)
// if these conditions are true the pointer has to be situated at the 1st part of the rxdataF
rxF = &rxdataF[aarx][(12*(c_rb - (frame_parms->N_RB_DL>>1)) + (symbol * (frame_parms->ofdm_symbol_size)))+n_BWP_start*12]; // we point at the 1st part of the rxdataF in symbol
@@ -406,7 +434,7 @@ void nr_pdcch_extract_rbs_single(int32_t **rxdataF,
//#endif
}
if ((c_rb < (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) != 0)) {
if (((c_rb + n_BWP_start) < (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) != 0)) {
//if RB to be treated is lower than middle system bandwidth then rxdataF pointed at (offset + c_br + symbol * ofdm_symbol_size): odd case
rxF = &rxdataF[aarx][(frame_parms->first_carrier_offset + 12 * c_rb + (symbol * (frame_parms->ofdm_symbol_size)))+n_BWP_start*12];
#ifdef NR_PDCCH_DCI_DEBUG
@@ -415,7 +443,7 @@ void nr_pdcch_extract_rbs_single(int32_t **rxdataF,
#endif
}
if ((c_rb > (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) != 0)) {
if (((c_rb + n_BWP_start) > (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) != 0)) {
// number of RBs is odd and c_rb is higher than half system bandwidth + 1
// if these conditions are true the pointer has to be situated at the 1st part of the rxdataF just after the first IQ symbols of the RB containing DC
rxF = &rxdataF[aarx][(12*(c_rb - (frame_parms->N_RB_DL>>1)) - 6 + (symbol * (frame_parms->ofdm_symbol_size)))+n_BWP_start*12]; // we point at the 1st part of the rxdataF in symbol
@@ -425,7 +453,7 @@ void nr_pdcch_extract_rbs_single(int32_t **rxdataF,
#endif
}
if ((c_rb == (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) != 0)) { // treatment of RB containing the DC
if (((c_rb + n_BWP_start) == (frame_parms->N_RB_DL >> 1)) && ((frame_parms->N_RB_DL & 1) != 0)) { // treatment of RB containing the DC
// if odd number RBs in system bandwidth and first RB to be treated is higher than middle system bandwidth (around DC)
// we have to treat the RB in two parts: first part from i=0 to 5, the data is at the end of rxdataF (pointing at the end of the table)
rxF = &rxdataF[aarx][(frame_parms->first_carrier_offset + 12 * c_rb + (symbol * (frame_parms->ofdm_symbol_size)))+n_BWP_start*12];
@@ -760,12 +788,14 @@ int32_t nr_rx_pdcch(PHY_VARS_NR_UE *ue,
LOG_D(PHY,"we enter nr_pdcch_demapping_deinterleaving()\n");
nr_pdcch_demapping_deinterleaving((uint32_t *) pdcch_vars->llr,
(uint32_t *) pdcch_vars->e_rx,
frame_parms,
rel15->coreset.duration,
n_rb,
rel15->coreset.RegBundleSize,
rel15->coreset.InterleaverSize,
rel15->coreset.ShiftIndex);
rel15->coreset.ShiftIndex,
rel15->number_of_candidates,
rel15->CCE,
rel15->L);
/*
nr_pdcch_unscrambling(rel15->rnti,
frame_parms,
openair1/PHY/defs_nr_common.h
+1 -1
View File
@@ -89,7 +89,7 @@
#define NR_MAX_NUM_BWP 4
#define NR_MAX_PDCCH_AGG_LEVEL 16
#define NR_MAX_PDCCH_AGG_LEVEL 16 // 3GPP TS 38.211 V15.8 Section 7.3.2 Table 7.3.2.1-1: Supported PDCCH aggregation levels
#define NR_MAX_CSET_DURATION 3
#define NR_MAX_NB_RBG 18