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

fix UE UL DMRS generation if start_rb != 0 in nr_ue_ulsch_procedures()

Browse Source 
also do some code cleanup while at it...
This commit is contained in:
Thomas Schlichter
2020-08-28 14:27:20 +02:00
parent a14dd04e1b
commit 8f09cc6c75
1 changed files with 58 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c
+58 -72
View File
@@ -101,41 +101,39 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
LOG_D(PHY,"nr_ue_ulsch_procedures hard_id %d %d.%d\n",harq_pid,frame,slot);
uint32_t available_bits;
uint8_t mod_order, cwd_index, num_of_codewords, l;
uint8_t mod_order, cwd_index, l;
uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
uint32_t ***pusch_dmrs;
int16_t **tx_layers;
int32_t **txdataF;
uint16_t start_sc, start_rb;
int8_t Wf[2], Wt[2], l_prime[2], delta;
uint16_t rnti, n_dmrs, code_rate, number_dmrs_symbols, nb_rb, k;
uint8_t dmrs_type, nb_dmrs_re_per_rb, number_of_symbols, mcs, Nl;
int ap, start_symbol, Nid_cell, i;
int sample_offsetF, N_RE_prime, N_PRB_oh;
uint16_t ul_dmrs_symb_pos;
uint8_t L_ptrs, K_ptrs; // PTRS parameters
uint16_t beta_ptrs; // PTRS parameter related to power control
uint16_t rnti, code_rate, nb_rb;
uint8_t nb_dmrs_re_per_rb,mcs, Nl;
int ap, i;
int sample_offsetF, N_RE_prime;
NR_UE_ULSCH_t *ulsch_ue;
NR_UL_UE_HARQ_t *harq_process_ul_ue=NULL;
NR_DL_FRAME_PARMS *frame_parms = &UE->frame_parms;
NR_UE_PUSCH *pusch_ue = UE->pusch_vars[thread_id][gNB_id];
// ptrs_UplinkConfig_t *ptrs_Uplink_Config = &UE->pusch_config.dmrs_UplinkConfig.ptrs_UplinkConfig;
num_of_codewords = 1; // tmp assumption
Nid_cell = 0;
N_PRB_oh = 0; // higher layer (RRC) parameter xOverhead in PUSCH-ServingCellConfig
number_dmrs_symbols = 0;
uint8_t num_of_codewords = 1; // tmp assumption
int Nid_cell = 0;
int N_PRB_oh = 0; // higher layer (RRC) parameter xOverhead in PUSCH-ServingCellConfig
uint16_t number_dmrs_symbols = 0;
for (cwd_index = 0;cwd_index < num_of_codewords; cwd_index++) {
ulsch_ue = UE->ulsch[thread_id][gNB_id][cwd_index];
harq_process_ul_ue = ulsch_ue->harq_processes[harq_pid];
NR_UE_ULSCH_t *ulsch_ue = UE->ulsch[thread_id][gNB_id][cwd_index];
NR_UL_UE_HARQ_t *harq_process_ul_ue = ulsch_ue->harq_processes[harq_pid];
start_symbol = harq_process_ul_ue->pusch_pdu.start_symbol_index;
ul_dmrs_symb_pos = harq_process_ul_ue->pusch_pdu.ul_dmrs_symb_pos;
number_of_symbols = harq_process_ul_ue->pusch_pdu.nr_of_symbols;
dmrs_type = harq_process_ul_ue->pusch_pdu.dmrs_config_type;
int start_symbol = harq_process_ul_ue->pusch_pdu.start_symbol_index;
uint16_t ul_dmrs_symb_pos = harq_process_ul_ue->pusch_pdu.ul_dmrs_symb_pos;
uint8_t number_of_symbols = harq_process_ul_ue->pusch_pdu.nr_of_symbols;
uint8_t dmrs_type = harq_process_ul_ue->pusch_pdu.dmrs_config_type;
uint16_t start_rb = harq_process_ul_ue->pusch_pdu.rb_start;
uint16_t start_sc = frame_parms->first_carrier_offset + start_rb*NR_NB_SC_PER_RB;
if (start_sc >= frame_parms->ofdm_symbol_size)
start_sc -= frame_parms->ofdm_symbol_size;
for (i = start_symbol; i < start_symbol + number_of_symbols; i++) {
@@ -210,14 +208,10 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
///////////
////////////////////////////////////////////////////////////////////////
//}
}
/////////////////////////DMRS Modulation/////////////////////////
///////////
pusch_dmrs = UE->nr_gold_pusch_dmrs[slot];
n_dmrs = (nb_rb*((dmrs_type == pusch_dmrs_type1) ? 6:4)*number_dmrs_symbols);
uint32_t ***pusch_dmrs = UE->nr_gold_pusch_dmrs[slot];
uint16_t n_dmrs = (start_rb+nb_rb)*((dmrs_type == pusch_dmrs_type1) ? 6:4);
int16_t mod_dmrs[n_dmrs<<1];
///////////
////////////////////////////////////////////////////////////////////////
@@ -226,16 +220,15 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
/////////////////////////PTRS parameters' initialization/////////////////////////
///////////
int16_t mod_ptrs[(nb_rb/2)*(NR_SYMBOLS_PER_SLOT-1)*2]; // assume maximum number of PTRS per pusch allocation
K_ptrs = 0; // just to avoid a warning
int16_t mod_ptrs[nb_rb]; // assume maximum number of PTRS per pusch allocation
uint8_t L_ptrs, K_ptrs = 0;
uint16_t beta_ptrs = 1; // temp value until power control is implemented
if (harq_process_ul_ue->pusch_pdu.pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {
K_ptrs = (harq_process_ul_ue->pusch_pdu.pusch_ptrs.ptrs_freq_density)?4:2;
L_ptrs = 1<<harq_process_ul_ue->pusch_pdu.pusch_ptrs.ptrs_time_density;
beta_ptrs = 1; // temp value until power control is implemented
ulsch_ue->ptrs_symbols = 0;
set_ptrs_symb_idx(&ulsch_ue->ptrs_symbols,
@@ -274,11 +267,6 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
for (l = start_symbol; l < start_symbol + number_of_symbols; l++) {
if((ul_dmrs_symb_pos >> l) & 0x01)
is_dmrs = 1;
else
is_dmrs = 0;
if (is_dmrs == 1)
nb_re_dmrs_per_rb = nb_dmrs_re_per_rb;
else
nb_re_dmrs_per_rb = 0;
@@ -303,47 +291,53 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
txdataF = UE->common_vars.txdataF;
start_rb = harq_process_ul_ue->pusch_pdu.rb_start;
start_sc = frame_parms->first_carrier_offset + start_rb*NR_NB_SC_PER_RB;
if (start_sc >= frame_parms->ofdm_symbol_size)
start_sc -= frame_parms->ofdm_symbol_size;
for (ap=0; ap< Nl; ap++) {
uint8_t k_prime = 0;
uint16_t m = 0;
// DMRS params for this ap
get_Wt(Wt, ap, dmrs_type);
get_Wf(Wf, ap, dmrs_type);
delta = get_delta(ap, dmrs_type);
uint8_t k_prime=0;
uint8_t is_dmrs, is_ptrs, is_dmrs_symbol;
uint16_t m=0, n=0, dmrs_idx=0, ptrs_idx = 0;
for (l=start_symbol; l<start_symbol+number_of_symbols; l++) {
k = start_sc;
n = 0;
dmrs_idx = 0;
uint16_t k = start_sc;
uint16_t n = 0;
uint8_t is_dmrs_sym = 0;
uint8_t is_ptrs_sym = 0;
uint16_t dmrs_idx = 0, ptrs_idx = 0;
if ((ul_dmrs_symb_pos >> l) & 0x01) {
is_dmrs_sym = 1;
if (dmrs_type == pusch_dmrs_type1)
dmrs_idx = start_rb*6;
else
dmrs_idx = start_rb*4;
nr_modulation(pusch_dmrs[l][0], n_dmrs*2, DMRS_MOD_ORDER, mod_dmrs); // currently only codeword 0 is modulated. Qm = 2 as DMRS is QPSK modulated
} else if (harq_process_ul_ue->pusch_pdu.pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {
if(is_ptrs_symbol(l, ulsch_ue->ptrs_symbols)) {
is_ptrs_sym = 1;
nr_modulation(pusch_dmrs[l][0], nb_rb, DMRS_MOD_ORDER, mod_ptrs);
}
}
for (i=0; i< nb_rb*NR_NB_SC_PER_RB; i++) {
uint8_t is_dmrs = 0;
uint8_t is_ptrs = 0;
sample_offsetF = l*frame_parms->ofdm_symbol_size + k;
is_dmrs = 0;
is_ptrs = 0;
is_dmrs_symbol = 0;
if((ul_dmrs_symb_pos >> l) & 0x01) {
is_dmrs_symbol = 1;
if (is_dmrs_sym) {
if (k == ((start_sc+get_dmrs_freq_idx_ul(n, k_prime, delta, dmrs_type))%frame_parms->ofdm_symbol_size))
is_dmrs = 1;
}
if (harq_process_ul_ue->pusch_pdu.pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS){
if(is_ptrs_symbol(l, ulsch_ue->ptrs_symbols))
} else if (is_ptrs_sym) {
is_ptrs = is_ptrs_subcarrier(k,
rnti,
ap,
@@ -357,10 +351,6 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
if (is_dmrs == 1) {
if (k == start_sc){
nr_modulation(pusch_dmrs[l][0], n_dmrs*2, DMRS_MOD_ORDER, mod_dmrs); // currently only codeword 0 is modulated. Qm = 2 as DMRS is QPSK modulated
}
((int16_t*)txdataF[ap])[(sample_offsetF)<<1] = (Wt[l_prime[0]]*Wf[k_prime]*AMP*mod_dmrs[dmrs_idx<<1]) >> 15;
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1] = (Wt[l_prime[0]]*Wf[k_prime]*AMP*mod_dmrs[(dmrs_idx<<1) + 1]) >> 15;
@@ -378,16 +368,12 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
} else if (is_ptrs == 1) {
if (k == start_sc){
nr_modulation(pusch_dmrs[l][0], nb_rb, DMRS_MOD_ORDER, mod_ptrs);
}
((int16_t*)txdataF[ap])[(sample_offsetF)<<1] = (beta_ptrs*AMP*mod_ptrs[ptrs_idx<<1]) >> 15;
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1] = (beta_ptrs*AMP*mod_ptrs[(ptrs_idx<<1) + 1]) >> 15;
ptrs_idx++;
} else if (!is_dmrs_symbol || allowed_xlsch_re_in_dmrs_symbol(k,start_sc,harq_process_ul_ue->pusch_pdu.num_dmrs_cdm_grps_no_data,dmrs_type)) {
} else if (!is_dmrs_sym || allowed_xlsch_re_in_dmrs_symbol(k,start_sc,harq_process_ul_ue->pusch_pdu.num_dmrs_cdm_grps_no_data,dmrs_type)) {
((int16_t*)txdataF[ap])[(sample_offsetF)<<1] = ((int16_t *) ulsch_ue->y)[m<<1];
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1] = ((int16_t *) ulsch_ue->y)[(m<<1) + 1];
@@ -412,8 +398,8 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
}
}
}
}
//}
NR_UL_UE_HARQ_t *harq_process_ulsch=NULL;
harq_process_ulsch = UE->ulsch[thread_id][gNB_id][0]->harq_processes[harq_pid];
harq_process_ulsch->status = SCH_IDLE;