maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
a87e99ad693dc2ae5fde20136a6d2f71bbcd31c8
openairinterface5g/openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_decoding.c
T
Robert Schmidt 2251453cbd Fix nr_dlschsim: correct size for N_RB_DL 
Fix warning, drop undefined function
2022-02-21 13:36:41 +01:00

667 lines
23 KiB
C
Raw Blame History

/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.0 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file PHY/NR_UE_TRANSPORT/nr_dlsch_decoding.c
* \brief Top-level routines for decoding Turbo-coded (DLSCH) transport channels from 36-212, V8.6 2009-03
* \author R. Knopp
* \date 2011
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr
* \note
* \warning
*/
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "PHY/defs_nr_UE.h"
#include "SCHED_NR_UE/harq_nr.h"
#include "PHY/phy_extern_nr_ue.h"
#include "PHY/CODING/coding_extern.h"
#include "PHY/CODING/coding_defs.h"
#include "PHY/NR_TRANSPORT/nr_transport_common_proto.h"
#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
#include "PHY/NR_TRANSPORT/nr_dlsch.h"
#include "SCHED_NR_UE/defs.h"
#include "SIMULATION/TOOLS/sim.h"
#include "executables/nr-uesoftmodem.h"
#include "PHY/CODING/nrLDPC_extern.h"
#include "common/utils/nr/nr_common.h"
//#define ENABLE_PHY_PAYLOAD_DEBUG 1
#define OAI_UL_LDPC_MAX_NUM_LLR 27000//26112 // NR_LDPC_NCOL_BG1*NR_LDPC_ZMAX = 68*384
//#define OAI_LDPC_MAX_NUM_LLR 27000//26112 // NR_LDPC_NCOL_BG1*NR_LDPC_ZMAX
static uint64_t nb_total_decod =0;
static uint64_t nb_error_decod =0;
notifiedFIFO_t freeBlocks_dl;
notifiedFIFO_elt_t *msgToPush_dl;
int nbDlProcessing =0;
static tpool_t pool_dl;
//extern double cpuf;
void init_dlsch_tpool(uint8_t num_dlsch_threads) {
char *params = NULL;
if( num_dlsch_threads==0) {
params = calloc(1,2);
memcpy(params,"N",1);
}
else {
params = calloc(1,(num_dlsch_threads*3)+1);
for (int i=0; i<num_dlsch_threads; i++) {
memcpy(params+(i*3),"-1,",3);
}
}
initNamedTpool(params, &pool_dl, false,"dlsch");
free(params);
}
void free_nr_ue_dlsch(NR_UE_DLSCH_t **dlschptr, uint16_t N_RB_DL) {
int i,r;
uint16_t a_segments = MAX_NUM_NR_DLSCH_SEGMENTS; //number of segments to be allocated
NR_UE_DLSCH_t *dlsch=*dlschptr;
if (dlsch) {
if (N_RB_DL != 273) {
a_segments = a_segments*N_RB_DL;
a_segments = a_segments/273 +1;
}
for (i=0; i<dlsch->Mdlharq; i++) {
if (dlsch->harq_processes[i]) {
if (dlsch->harq_processes[i]->b) {
free16(dlsch->harq_processes[i]->b,a_segments*1056);
dlsch->harq_processes[i]->b = NULL;
}
for (r=0; r<a_segments; r++) {
free16(dlsch->harq_processes[i]->c[r],1056);
dlsch->harq_processes[i]->c[r] = NULL;
}
for (r=0; r<a_segments; r++)
if (dlsch->harq_processes[i]->d[r]) {
free16(dlsch->harq_processes[i]->d[r],(5*8448)*sizeof(short));
dlsch->harq_processes[i]->d[r] = NULL;
}
for (r=0; r<a_segments; r++)
if (dlsch->harq_processes[i]->w[r]) {
free16(dlsch->harq_processes[i]->w[r],(5*8448)*sizeof(short));
dlsch->harq_processes[i]->w[r] = NULL;
}
for (r=0; r<a_segments; r++) {
if (dlsch->harq_processes[i]->p_nrLDPC_procBuf[r]) {
nrLDPC_free_mem(dlsch->harq_processes[i]->p_nrLDPC_procBuf[r]);
dlsch->harq_processes[i]->p_nrLDPC_procBuf[r] = NULL;
}
}
free16(dlsch->harq_processes[i],sizeof(NR_DL_UE_HARQ_t));
dlsch->harq_processes[i] = NULL;
}
}
free16(dlsch,sizeof(NR_UE_DLSCH_t));
dlsch = NULL;
}
}
NR_UE_DLSCH_t *new_nr_ue_dlsch(uint8_t Kmimo,uint8_t Mdlharq,uint32_t Nsoft,uint8_t max_ldpc_iterations,uint16_t N_RB_DL) {
NR_UE_DLSCH_t *dlsch;
uint8_t exit_flag = 0,i,r;
uint16_t a_segments = MAX_NUM_NR_DLSCH_SEGMENTS; //number of segments to be allocated
if (N_RB_DL != 273) {
a_segments = a_segments*N_RB_DL;
a_segments = (a_segments/273)+1;
}
uint32_t dlsch_bytes = a_segments*1056; // allocated bytes per segment
dlsch = (NR_UE_DLSCH_t *)malloc16(sizeof(NR_UE_DLSCH_t));
if (dlsch) {
memset(dlsch,0,sizeof(NR_UE_DLSCH_t));
dlsch->Kmimo = Kmimo;
dlsch->Mdlharq = Mdlharq;
dlsch->number_harq_processes_for_pdsch = Mdlharq;
dlsch->Nsoft = Nsoft;
dlsch->Mlimit = 4;
dlsch->max_ldpc_iterations = max_ldpc_iterations;
for (i=0; i<Mdlharq; i++) {
dlsch->harq_processes[i] = (NR_DL_UE_HARQ_t *)malloc16(sizeof(NR_DL_UE_HARQ_t));
if (dlsch->harq_processes[i]) {
memset(dlsch->harq_processes[i],0,sizeof(NR_DL_UE_HARQ_t));
init_downlink_harq_status(dlsch->harq_processes[i]);
dlsch->harq_processes[i]->first_rx=1;
dlsch->harq_processes[i]->b = (uint8_t *)malloc16(dlsch_bytes);
if (dlsch->harq_processes[i]->b)
memset(dlsch->harq_processes[i]->b,0,dlsch_bytes);
else
exit_flag=3;
for (r=0; r<a_segments; r++) {
dlsch->harq_processes[i]->p_nrLDPC_procBuf[r] = nrLDPC_init_mem();
dlsch->harq_processes[i]->c[r] = (uint8_t *)malloc16(1056);
if (dlsch->harq_processes[i]->c[r])
memset(dlsch->harq_processes[i]->c[r],0,1056);
else
exit_flag=2;
dlsch->harq_processes[i]->d[r] = (short *)malloc16((5*8448)*sizeof(short));
if (dlsch->harq_processes[i]->d[r])
memset(dlsch->harq_processes[i]->d[r],0,(5*8448)*sizeof(short));
else
exit_flag=2;
dlsch->harq_processes[i]->w[r] = (short *)malloc16((5*8448)*sizeof(short));
if (dlsch->harq_processes[i]->w[r])
memset(dlsch->harq_processes[i]->w[r],0,(5*8448)*sizeof(short));
else
exit_flag=2;
}
} else {
exit_flag=1;
}
}
if (exit_flag==0)
return(dlsch);
}
LOG_D(PHY,"new_ue_dlsch with size %zu: exit_flag = %u\n",sizeof(NR_DL_UE_HARQ_t), exit_flag);
free_nr_ue_dlsch(&dlsch,N_RB_DL);
return(NULL);
}
void nr_dlsch_unscrambling(int16_t *llr, uint32_t size, uint8_t q, uint32_t Nid, uint32_t n_RNTI)
{
nr_codeword_unscrambling(llr, size, q, Nid, n_RNTI);
}
bool nr_ue_postDecode(PHY_VARS_NR_UE *phy_vars_ue, notifiedFIFO_elt_t *req, bool last, notifiedFIFO_t *nf_p) {
ldpcDecode_ue_t *rdata = (ldpcDecode_ue_t*) NotifiedFifoData(req);
NR_DL_UE_HARQ_t *harq_process = rdata->harq_process;
NR_UE_DLSCH_t *dlsch = (NR_UE_DLSCH_t *) rdata->dlsch;
int r = rdata->segment_r;
merge_meas(&phy_vars_ue->dlsch_deinterleaving_stats, &rdata->ts_deinterleave);
merge_meas(&phy_vars_ue->dlsch_rate_unmatching_stats, &rdata->ts_rate_unmatch);
merge_meas(&phy_vars_ue->dlsch_ldpc_decoding_stats, &rdata->ts_ldpc_decode);
bool decodeSuccess = (rdata->decodeIterations < (1+dlsch->max_ldpc_iterations));
if (decodeSuccess) {
memcpy(harq_process->b+rdata->offset,
harq_process->c[r],
rdata->Kr_bytes - (harq_process->F>>3) -((harq_process->C>1)?3:0));
} else {
if ( !last ) {
int nb=abortTpool(&(pool_dl), req->key);
nb+=abortNotifiedFIFO(nf_p, req->key);
LOG_D(PHY,"downlink segment error %d/%d, aborted %d segments\n",rdata->segment_r,rdata->nbSegments, nb);
LOG_D(PHY, "DLSCH %d in error\n",rdata->dlsch_id);
last = true;
}
}
// if all segments are done
if (last) {
if (decodeSuccess) {
//LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for nr_slot_rx %d TBS %d mcs %d nb_rb %d harq_process->round %d\n",
// phy_vars_ue->Mod_id,nr_slot_rx,harq_process->TBS,harq_process->mcs,harq_process->nb_rb, harq_process->round);
harq_process->status = SCH_IDLE;
harq_process->round = 0;
harq_process->ack = 1;
//LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for SFN/SF %d/%d (pid %d, status %d, round %d, TBS %d, mcs %d)\n",
// phy_vars_ue->Mod_id, frame, subframe, harq_pid, harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs);
//if(is_crnti) {
// LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for nr_slot_rx %d (pid %d, round %d, TBS %d)\n",phy_vars_ue->Mod_id,nr_slot_rx,harq_pid,harq_process->round,harq_process->TBS);
//}
dlsch->last_iteration_cnt = rdata->decodeIterations;
LOG_D(PHY, "DLSCH received ok \n");
} else {
//LOG_D(PHY,"[UE %d] DLSCH: Setting NAK for SFN/SF %d/%d (pid %d, status %d, round %d, TBS %d, mcs %d) Kr %d r %d harq_process->round %d\n",
// phy_vars_ue->Mod_id, frame, nr_slot_rx, harq_pid,harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs,Kr,r,harq_process->round);
harq_process->ack = 0;
if (harq_process->round >= dlsch->Mlimit) {
harq_process->status = SCH_IDLE;
harq_process->round = 0;
phy_vars_ue->dl_stats[4]++;
}
//if(is_crnti) {
// LOG_D(PHY,"[UE %d] DLSCH: Setting NACK for nr_slot_rx %d (pid %d, pid status %d, round %d/Max %d, TBS %d)\n",
// phy_vars_ue->Mod_id,nr_slot_rx,harq_pid,harq_process->status,harq_process->round,dlsch->Mdlharq,harq_process->TBS);
//}
dlsch->last_iteration_cnt = dlsch->max_ldpc_iterations + 1;
LOG_D(PHY, "DLSCH received nok \n");
}
return true; //stop
}
else
{
return false; //not last one
}
}
void nr_processDLSegment(void* arg) {
ldpcDecode_ue_t *rdata = (ldpcDecode_ue_t*) arg;
NR_UE_DLSCH_t *dlsch = rdata->dlsch;
NR_DL_UE_HARQ_t *harq_process= rdata->harq_process;
t_nrLDPC_dec_params *p_decoderParms = &rdata->decoderParms;
int length_dec;
int no_iteration_ldpc;
int Kr;
int Kr_bytes;
int K_bits_F;
uint8_t crc_type;
int i;
int j;
int r = rdata->segment_r;
int A = rdata->A;
int E = rdata->E;
int Qm = rdata->Qm;
//int rv_index = rdata->rv_index;
int r_offset = rdata->r_offset;
uint8_t kc = rdata->Kc;
uint32_t Tbslbrm = rdata->Tbslbrm;
short* dlsch_llr = rdata->dlsch_llr;
rdata->decodeIterations = dlsch->max_ldpc_iterations + 1;
int8_t llrProcBuf[OAI_UL_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32)));
int16_t z [68*384 + 16] __attribute__ ((aligned(16)));
int8_t l [68*384 + 16] __attribute__ ((aligned(16)));
__m128i *pv = (__m128i*)&z;
__m128i *pl = (__m128i*)&l;
uint8_t Ilbrm = 1;
Kr = harq_process->K; // [hna] overwrites this line "Kr = p_decParams->Z*kb"
Kr_bytes = Kr>>3;
K_bits_F = Kr-harq_process->F;
t_nrLDPC_time_stats procTime = {0};
t_nrLDPC_time_stats* p_procTime = &procTime ;
t_nrLDPC_procBuf **p_nrLDPC_procBuf = harq_process->p_nrLDPC_procBuf;
start_meas(&rdata->ts_deinterleave);
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_DEINTERLEAVING, VCD_FUNCTION_IN);
nr_deinterleaving_ldpc(E,
Qm,
harq_process->w[r], // [hna] w is e
dlsch_llr+r_offset);
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_DEINTERLEAVING, VCD_FUNCTION_OUT);
stop_meas(&rdata->ts_deinterleave);
start_meas(&rdata->ts_rate_unmatch);
/* LOG_D(PHY,"HARQ_PID %d Rate Matching Segment %d (coded bits %d,E %d, F %d,unpunctured/repeated bits %d, TBS %d, mod_order %d, nb_rb %d, Nl %d, rv %d, round %d)...\n",
harq_pid,r, G,E,harq_process->F,
Kr*3,
harq_process->TBS,
Qm,
harq_process->nb_rb,
harq_process->Nl,
harq_process->rvidx,
harq_process->round); */
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_RATE_MATCHING, VCD_FUNCTION_IN);
if (nr_rate_matching_ldpc_rx(Ilbrm,
Tbslbrm,
p_decoderParms->BG,
p_decoderParms->Z,
harq_process->d[r],
harq_process->w[r],
harq_process->C,
harq_process->rvidx,
(harq_process->first_rx==1)?1:0,
E,
harq_process->F,
Kr-harq_process->F-2*(p_decoderParms->Z))==-1) {
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_RATE_MATCHING, VCD_FUNCTION_OUT);
stop_meas(&rdata->ts_rate_unmatch);
LOG_E(PHY,"dlsch_decoding.c: Problem in rate_matching\n");
rdata->decodeIterations = dlsch->max_ldpc_iterations + 1;
return;
}
stop_meas(&rdata->ts_rate_unmatch);
r_offset += E;
if (LOG_DEBUGFLAG(DEBUG_DLSCH_DECOD)) {
LOG_D(PHY,"decoder input(segment %u) :",r);
for (int i=0; i<E; i++)
LOG_D(PHY,"%d : %d\n",i,harq_process->d[r][i]);
LOG_D(PHY,"\n");
}
memset(harq_process->c[r],0,Kr_bytes);
if (harq_process->C == 1) {
if (A > NR_MAX_PDSCH_TBS)
crc_type = CRC24_A;
else
crc_type = CRC16;
length_dec = harq_process->B;
} else {
crc_type = CRC24_B;
length_dec = (harq_process->B+24*harq_process->C)/harq_process->C;
}
{
start_meas(&rdata->ts_ldpc_decode);
//set first 2*Z_c bits to zeros
memset(&z[0],0,2*harq_process->Z*sizeof(int16_t));
//set Filler bits
memset((&z[0]+K_bits_F),127,harq_process->F*sizeof(int16_t));
//Move coded bits before filler bits
memcpy((&z[0]+2*harq_process->Z),harq_process->d[r],(K_bits_F-2*harq_process->Z)*sizeof(int16_t));
//skip filler bits
memcpy((&z[0]+Kr),harq_process->d[r]+(Kr-2*harq_process->Z),(kc*harq_process->Z-Kr)*sizeof(int16_t));
//Saturate coded bits before decoding into 8 bits values
for (i=0, j=0; j < ((kc*harq_process->Z)>>4)+1; i+=2, j++) {
pl[j] = _mm_packs_epi16(pv[i],pv[i+1]);
}
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_LDPC, VCD_FUNCTION_IN);
p_decoderParms->block_length=length_dec;
nrLDPC_initcall(p_decoderParms, (int8_t*)&pl[0], llrProcBuf);
no_iteration_ldpc = nrLDPC_decoder(p_decoderParms,
(int8_t *)&pl[0],
llrProcBuf,
p_nrLDPC_procBuf[r],
p_procTime);
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_LDPC, VCD_FUNCTION_OUT);
// Fixme: correct type is unsigned, but nrLDPC_decoder and all called behind use signed int
if (check_crc((uint8_t *)llrProcBuf,length_dec,harq_process->F,crc_type)) {
LOG_D(PHY,"Segment %u CRC OK\n\033[0m",r);
if (r==0) {
for (int i=0; i<10; i++) LOG_D(PHY,"byte %d : %x\n",i,((uint8_t *)llrProcBuf)[i]);
}
//Temporary hack
no_iteration_ldpc = dlsch->max_ldpc_iterations;
rdata->decodeIterations = no_iteration_ldpc;
} else {
LOG_D(PHY,"CRC NOT OK\n\033[0m");
}
nb_total_decod++;
if (no_iteration_ldpc > dlsch->max_ldpc_iterations) {
nb_error_decod++;
}
for (int m=0; m < Kr>>3; m ++) {
harq_process->c[r][m]= (uint8_t) llrProcBuf[m];
}
stop_meas(&rdata->ts_ldpc_decode);
}
}
uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
UE_nr_rxtx_proc_t *proc,
int eNB_id,
short *dlsch_llr,
NR_DL_FRAME_PARMS *frame_parms,
NR_UE_DLSCH_t *dlsch,
NR_DL_UE_HARQ_t *harq_process,
uint32_t frame,
uint16_t nb_symb_sch,
uint8_t nr_slot_rx,
uint8_t harq_pid,
uint8_t is_crnti,
uint8_t llr8_flag) {
uint32_t A,E;
uint32_t G;
uint32_t ret,offset;
uint32_t r,r_offset=0,Kr=8424,Kr_bytes;
t_nrLDPC_dec_params decParams;
t_nrLDPC_dec_params *p_decParams = &decParams;
if (!harq_process) {
LOG_E(PHY,"dlsch_decoding.c: NULL harq_process pointer\n");
return(dlsch->max_ldpc_iterations + 1);
}
// HARQ stats
phy_vars_ue->dl_stats[harq_process->round]++;
LOG_D(PHY,"Round %d RV idx %d\n",harq_process->round,harq_process->rvidx);
uint8_t kc;
uint32_t Tbslbrm;// = 950984;
uint16_t nb_rb;// = 30;
double Coderate;// = 0.0;
uint8_t dmrs_Type = harq_process->dmrsConfigType;
AssertFatal(dmrs_Type == 0 || dmrs_Type == 1, "Illegal dmrs_type %d\n", dmrs_Type);
uint8_t nb_re_dmrs;
if (dmrs_Type==NFAPI_NR_DMRS_TYPE1) {
nb_re_dmrs = 6*harq_process->n_dmrs_cdm_groups;
} else {
nb_re_dmrs = 4*harq_process->n_dmrs_cdm_groups;
}
uint16_t dmrs_length = get_num_dmrs(harq_process->dlDmrsSymbPos);
vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_SEGMENTATION, VCD_FUNCTION_IN);
//NR_DL_UE_HARQ_t *harq_process = dlsch->harq_processes[0];
int nbDecode = 0;
if (!dlsch_llr) {
LOG_E(PHY,"dlsch_decoding.c: NULL dlsch_llr pointer\n");
return(dlsch->max_ldpc_iterations + 1);
}
if (!frame_parms) {
LOG_E(PHY,"dlsch_decoding.c: NULL frame_parms pointer\n");
return(dlsch->max_ldpc_iterations + 1);
}
/*if (nr_slot_rx> (frame_parms->slots_per_frame-1)) {
printf("dlsch_decoding.c: Illegal slot index %d\n",nr_slot_rx);
return(dlsch->max_ldpc_iterations + 1);
}*/
/*if (harq_process->harq_ack.ack != 2) {
LOG_D(PHY, "[UE %d] DLSCH @ SF%d : ACK bit is %d instead of DTX even before PDSCH is decoded!\n",
phy_vars_ue->Mod_id, nr_slot_rx, harq_process->harq_ack.ack);
}*/
// nb_rb = dlsch->nb_rb;
/*
if (nb_rb > frame_parms->N_RB_DL) {
printf("dlsch_decoding.c: Illegal nb_rb %d\n",nb_rb);
return(max_ldpc_iterations + 1);
}*/
/*harq_pid = dlsch->current_harq_pid[proc->thread_id];
if (harq_pid >= 8) {
printf("dlsch_decoding.c: Illegal harq_pid %d\n",harq_pid);
return(max_ldpc_iterations + 1);
}
*/
nb_rb = harq_process->nb_rb;
harq_process->trials[harq_process->round]++;
uint16_t nb_rb_oh = 0; // it was not computed at UE side even before and set to 0 in nr_compute_tbs
harq_process->TBS = nr_compute_tbs(harq_process->Qm,harq_process->R,nb_rb,nb_symb_sch,nb_re_dmrs*dmrs_length, nb_rb_oh, 0, harq_process->Nl);
A = harq_process->TBS;
ret = dlsch->max_ldpc_iterations + 1;
dlsch->last_iteration_cnt = ret;
harq_process->G = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, dmrs_length, harq_process->Qm,harq_process->Nl);
G = harq_process->G;
LOG_D(PHY,"%d.%d DLSCH Decoding, harq_pid %d TBS %d (%d) G %d nb_re_dmrs %d length dmrs %d mcs %d Nl %d nb_symb_sch %d nb_rb %d\n",
frame,nr_slot_rx,harq_pid,A,A/8,G, nb_re_dmrs, dmrs_length, harq_process->mcs, harq_process->Nl, nb_symb_sch,nb_rb);
if ((harq_process->R)<1024)
Coderate = (float) (harq_process->R) /(float) 1024;
else
Coderate = (float) (harq_process->R) /(float) 2048;
if ((A <=292) || ((A <= NR_MAX_PDSCH_TBS) && (Coderate <= 0.6667)) || Coderate <= 0.25) {
p_decParams->BG = 2;
kc = 52;
if (Coderate < 0.3333) {
p_decParams->R = 15;
} else if (Coderate <0.6667) {
p_decParams->R = 13;
} else {
p_decParams->R = 23;
}
} else {
p_decParams->BG = 1;
kc = 68;
if (Coderate < 0.6667) {
p_decParams->R = 13;
} else if (Coderate <0.8889) {
p_decParams->R = 23;
} else {
p_decParams->R = 89;
}
}
if (harq_process->first_rx == 1) {
// This is a new packet, so compute quantities regarding segmentation
if (A > NR_MAX_PDSCH_TBS)
harq_process->B = A+24;
else
harq_process->B = A+16;
nr_segmentation(NULL,
NULL,
harq_process->B,
&harq_process->C,
&harq_process->K,
&harq_process->Z, // [hna] Z is Zc
&harq_process->F,
p_decParams->BG);
if (LOG_DEBUGFLAG(DEBUG_DLSCH_DECOD) && (!frame%100))
LOG_I(PHY,"K %d C %d Z %d nl %d \n", harq_process->K, harq_process->C, p_decParams->Z, harq_process->Nl);
}
if ((harq_process->Nl)<4)
Tbslbrm = nr_compute_tbslbrm(harq_process->mcs_table,nb_rb,harq_process->Nl);
else
Tbslbrm = nr_compute_tbslbrm(harq_process->mcs_table,nb_rb,4);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_SEGMENTATION, VCD_FUNCTION_OUT);
p_decParams->Z = harq_process->Z;
//printf("dlsch decoding nr segmentation Z %d\n", p_decParams->Z);
//printf("coderate %f kc %d \n", Coderate, kc);
p_decParams->numMaxIter = dlsch->max_ldpc_iterations;
p_decParams->outMode= 0;
r_offset = 0;
uint16_t a_segments = MAX_NUM_NR_DLSCH_SEGMENTS; //number of segments to be allocated
if (nb_rb != 273) {
a_segments = a_segments*nb_rb;
a_segments = a_segments/273 +1;
}
if (harq_process->C > a_segments) {
LOG_E(PHY,"Illegal harq_process->C %d > %d\n",harq_process->C,a_segments);
return((1+dlsch->max_ldpc_iterations));
}
if (LOG_DEBUGFLAG(DEBUG_DLSCH_DECOD))
LOG_I(PHY,"Segmentation: C %d, K %d\n",harq_process->C,harq_process->K);
Kr = harq_process->K; // [hna] overwrites this line "Kr = p_decParams->Z*kb"
Kr_bytes = Kr>>3;
offset = 0;
void (*nr_processDLSegment_ptr)(void*) = &nr_processDLSegment;
notifiedFIFO_t nf;
initNotifiedFIFO(&nf);
for (r=0; r<harq_process->C; r++) {
//printf("start rx segment %d\n",r);
E = nr_get_E(G, harq_process->C, harq_process->Qm, harq_process->Nl, r);
union ldpcReqUnion id = {.s={dlsch->rnti,frame,nr_slot_rx,0,0}};
notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(ldpcDecode_ue_t), id.p, &nf, nr_processDLSegment_ptr);
ldpcDecode_ue_t * rdata=(ldpcDecode_ue_t *) NotifiedFifoData(req);
rdata->phy_vars_ue = phy_vars_ue;
rdata->harq_process = harq_process;
rdata->decoderParms = decParams;
rdata->dlsch_llr = dlsch_llr;
rdata->Kc = kc;
rdata->harq_pid = harq_pid;
rdata->segment_r = r;
rdata->nbSegments = harq_process->C;
rdata->E = E;
rdata->A = A;
rdata->Qm = harq_process->Qm;
rdata->r_offset = r_offset;
rdata->Kr_bytes = Kr_bytes;
rdata->rv_index = harq_process->rvidx;
rdata->Tbslbrm = Tbslbrm;
rdata->offset = offset;
rdata->dlsch = dlsch;
rdata->dlsch_id = 0;
reset_meas(&rdata->ts_deinterleave);
reset_meas(&rdata->ts_rate_unmatch);
reset_meas(&rdata->ts_ldpc_decode);
pushTpool(&(pool_dl),req);
nbDecode++;
LOG_D(PHY,"Added a block to decode, in pipe: %d\n",nbDecode);
r_offset += E;
offset += (Kr_bytes - (harq_process->F>>3) - ((harq_process->C>1)?3:0));
//////////////////////////////////////////////////////////////////////////////////////////
}
for (r=0; r<nbDecode; r++) {
notifiedFIFO_elt_t *req=pullTpool(&nf, &(pool_dl));
bool last = false;
if (r == nbDecode - 1)
last = true;
bool stop = nr_ue_postDecode(phy_vars_ue, req, last, &nf);
delNotifiedFIFO_elt(req);
if (stop)
break;
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_COMBINE_SEG, VCD_FUNCTION_OUT);
ret = dlsch->last_iteration_cnt;
return(ret);
}
Reference in New Issue View Git Blame Copy Permalink