nr_dlsch_decoding.c

/*
 * 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 "LAYER2/NR_MAC_gNB/mac_proto.h"
//#define DEBUG_DLSCH_DECODING
//#define ENABLE_PHY_PAYLOAD_DEBUG 1

//#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;

//extern double cpuf;

void free_nr_ue_dlsch(NR_UE_DLSCH_t **dlschptr,uint8_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, uint8_t abstraction_flag)
{

  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;
  }  

  uint16_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++) {
      //      printf("new_ue_dlsch: Harq process %d\n",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_tx=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;

        if (abstraction_flag == 0) {
          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);
  }

  printf("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) {

  uint8_t reset;
  uint32_t x1, x2, s=0;

  reset = 1;
  x2 = (n_RNTI<<15) + (q<<14) + Nid;

  for (int i=0; i<size; i++) {
    if ((i&0x1f)==0) {
      s = lte_gold_generic(&x1, &x2, reset);
      reset = 0;
    }
    if (((s>>(i&0x1f))&1)==1)
      llr[i] = -llr[i];
  }

}

uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
			   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_tti_rx,
			   uint8_t harq_pid,
			   uint8_t is_crnti,
			   uint8_t llr8_flag)
{

#if UE_TIMING_TRACE
  time_stats_t *dlsch_rate_unmatching_stats=&phy_vars_ue->dlsch_rate_unmatching_stats;
  time_stats_t *dlsch_turbo_decoding_stats=&phy_vars_ue->dlsch_turbo_decoding_stats;
  time_stats_t *dlsch_deinterleaving_stats=&phy_vars_ue->dlsch_deinterleaving_stats;
#endif
  uint32_t A,E;
  uint32_t G;
  uint32_t ret,offset;
  int32_t no_iteration_ldpc, length_dec;
  uint32_t r,r_offset=0,Kr=8424,Kr_bytes,K_bytes_F,err_flag=0;
  uint8_t crc_type;
  int8_t llrProcBuf[NR_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32)));
  t_nrLDPC_dec_params decParams;
  t_nrLDPC_dec_params* p_decParams = &decParams;
  t_nrLDPC_time_stats procTime;
  t_nrLDPC_time_stats* p_procTime =&procTime ;
  
  if (!harq_process) {
    printf("dlsch_decoding.c: NULL harq_process pointer\n");
    return(dlsch->max_ldpc_iterations + 1);
  }
  t_nrLDPC_procBuf** p_nrLDPC_procBuf = harq_process->p_nrLDPC_procBuf;

    
  int16_t z [68*384];
  int8_t l [68*384];
  //__m128i l;
  //int16_t inv_d [68*384];
  uint8_t kc;
  uint8_t Ilbrm = 1;

  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);
  AssertFatal(dmrs_length == 1 || dmrs_length == 2,"Illegal dmrs_length %d\n",dmrs_length);

  uint32_t i,j;

  __m128i *pv = (__m128i*)&z;
  __m128i *pl = (__m128i*)&l;
  
    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];

  if (!dlsch_llr) {
    printf("dlsch_decoding.c: NULL dlsch_llr pointer\n");
    return(dlsch->max_ldpc_iterations + 1);
  }

  if (!frame_parms) {
    printf("dlsch_decoding.c: NULL frame_parms pointer\n");
    return(dlsch->max_ldpc_iterations + 1);
  }

  /*if (nr_tti_rx> (10*frame_parms->ttis_per_subframe-1)) {
    printf("dlsch_decoding.c: Illegal subframe index %d\n",nr_tti_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_tti_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[phy_vars_ue->current_thread_id[subframe]];
  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,"DLSCH Decoding, harq_pid %d TBS %d (%d) G %d nb_re_dmrs %d mcs %d Nl %d nb_symb_sch %d nb_rb %d\n",harq_pid,A,A/8,G, nb_re_dmrs,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<=3824) && (Coderate <= 0.6667)) || Coderate <= 0.25)
  {
    p_decParams->BG = 2;
    if (Coderate < 0.3333){
      p_decParams->R = 15;
      kc = 52;
    }
    else if (Coderate <0.6667){
      p_decParams->R = 13;
      kc = 32;
    }
    else {
      p_decParams->R = 23;
      kc = 17;
    }
  }
  else{
    p_decParams->BG = 1;
    if (Coderate < 0.6667){
      p_decParams->R = 13;
      kc = 68;
    }
    else if (Coderate <0.8889){
      p_decParams->R = 23;
      kc = 35;
    }
    else {
      p_decParams->R = 89;
      kc = 27;
    }
  }


  if (harq_process->round == 0) {
    // This is a new packet, so compute quantities regarding segmentation
	if (A > 3824)
	  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);

#ifdef DEBUG_DLSCH_DECODING
    if (!frame%100)
      printf("K %d C %d Z %d nl %d \n", harq_process->K, harq_process->C, p_decParams->Z, harq_process->Nl);
#endif
  }

  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;

  err_flag = 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));
  }

#ifdef DEBUG_DLSCH_DECODING
  printf("Segmentation: C %d, K %d\n",harq_process->C,harq_process->K);
#endif

  opp_enabled=1;

  Kr = harq_process->K; // [hna] overwrites this line "Kr = p_decParams->Z*kb"
  Kr_bytes = Kr>>3;

  K_bytes_F = Kr_bytes-(harq_process->F>>3);

  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);

#if UE_TIMING_TRACE
    start_meas(dlsch_deinterleaving_stats);
#endif

    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_DEINTERLEAVING, VCD_FUNCTION_IN);


    nr_deinterleaving_ldpc(E,
                           harq_process->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);

    //for (int i =0; i<16; i++)
    //          printf("rx output deinterleaving w[%d]= %d r_offset %d\n", i,harq_process->w[r][i], r_offset);

#if UE_TIMING_TRACE
    stop_meas(dlsch_deinterleaving_stats);
#endif

#if UE_TIMING_TRACE
    start_meas(dlsch_rate_unmatching_stats);
#endif

    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,
          harq_process->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 ((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);


    if (nr_rate_matching_ldpc_rx(Ilbrm,
                                 Tbslbrm,
                                 p_decParams->BG,
                                 p_decParams->Z,
                                 harq_process->d[r],
                                 harq_process->w[r],
                                 harq_process->C,
                                 harq_process->rvidx,
                                 (harq_process->round==0)?1:0,
                                 E,
                                 harq_process->F,
                                 Kr-harq_process->F-2*(p_decParams->Z))==-1) {
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_RATE_MATCHING, VCD_FUNCTION_OUT);
#if UE_TIMING_TRACE
      stop_meas(dlsch_rate_unmatching_stats);
#endif
      LOG_E(PHY,"dlsch_decoding.c: Problem in rate_matching\n");
      return(dlsch->max_ldpc_iterations + 1);
    } else {

#if UE_TIMING_TRACE
      stop_meas(dlsch_rate_unmatching_stats);
#endif
    }


    //for (int i =0; i<16; i++)
    //      printf("rx output ratematching d[%d]= %d r_offset %d\n", i,harq_process->d[r][i], r_offset);

    r_offset += E;

#ifdef DEBUG_DLSCH_DECODING
    if (r==0) {
      write_output("decoder_llr.m","decllr",dlsch_llr,G,1,0);
      write_output("decoder_in.m","dec",&harq_process->d[0][0],E,1,0);
    }

    printf("decoder input(segment %u) :",r);
    int i;
    for (i=0;i<E;i++)
      printf("%d : %d\n",i,harq_process->d[r][i]);
    printf("\n");
#endif

    //    printf("Clearing c, %p\n",harq_process->c[r]);
    memset(harq_process->c[r],0,Kr_bytes);

    //    printf("done\n");
    if (harq_process->C == 1){
    	if (A > 3824) 
    		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;
    }

    if (err_flag == 0) {

#if UE_TIMING_TRACE
      start_meas(dlsch_turbo_decoding_stats);
#endif

      //LOG_E(PHY,"AbsSubframe %d.%d Start LDPC segment %d/%d A %d ",frame%1024,nr_tti_rx,r,harq_process->C-1, A);

      //printf("harq process dr iteration %d\n", p_decParams->numMaxIter);

      memset(pv,0,2*harq_process->Z*sizeof(int16_t));
      //memset(pl,0,2*p_decParams->Z*sizeof(int8_t));
      memset((pv+K_bytes_F),127,harq_process->F*sizeof(int16_t));


      for (i=((2*p_decParams->Z)>>3), j = 0; i < K_bytes_F; i++, j++)
      {
        pv[i]= _mm_loadu_si128((__m128i*)(&harq_process->d[r][8*j]));
      }
      // Kbytes_F = Kr_bytes - F>>3
      j+=(harq_process->F>>3);
      //      for (i=Kr_bytes,j=K_bytes_F-((2*p_decParams->Z)>>3); i < ((kc*p_decParams->Z)>>3); i++, j++)
      for (i=Kr_bytes; i < ((kc*p_decParams->Z)>>3); i++,j++)
      {
        pv[i]= _mm_loadu_si128((__m128i*)(&harq_process->d[r][8*j]));
      }

      for (i=0, j=0; j < ((kc*p_decParams->Z)>>4);  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);

      no_iteration_ldpc = nrLDPC_decoder(p_decParams,
                           (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;
        ret = no_iteration_ldpc;
      }
      else {
        LOG_D(PHY,"CRC NOK\n\033[0m");
        ret = 1 + dlsch->max_ldpc_iterations;
      }


      nb_total_decod++;
      if (no_iteration_ldpc > dlsch->max_ldpc_iterations){
        nb_error_decod++;
      }

      //if (!nb_total_decod%10000){
      //printf("Error number of iteration LPDC %d %ld/%ld \n", no_iteration_ldpc, nb_error_decod,nb_total_decod);fflush(stdout);
      //}
      //else
      //printf("OK number of iteration LPDC %d\n", no_iteration_ldpc);

      for (int m=0; m < Kr>>3; m ++)
      {
        harq_process->c[r][m]= (uint8_t) llrProcBuf[m];
      }

#ifdef DEBUG_DLSCH_DECODING
      //printf("output decoder %d %d %d %d %d \n", harq_process->c[r][0], harq_process->c[r][1], harq_process->c[r][2],harq_process->c[r][3], harq_process->c[r][4]);
      for (int k=0;k<A>>3;k++)
        printf("output decoder [%d] =  0x%02x \n", k, harq_process->c[r][k]);
      printf("no_iterations_ldpc %d (ret %u)\n",no_iteration_ldpc,ret);
      //write_output("dec_output.m","dec0",harq_process->c[0],Kr_bytes,1,4);
#endif


#if UE_TIMING_TRACE
      stop_meas(dlsch_turbo_decoding_stats);
#endif
    }
    
    

    /*printf("Segmentation: C %d r %d, dlsch_rate_unmatching_stats %5.3f dlsch_deinterleaving_stats %5.3f  dlsch_turbo_decoding_stats %5.3f \n",
                  harq_process->C,
                  r,
                  dlsch_rate_unmatching_stats->p_time/(cpuf*1000.0),
                  dlsch_deinterleaving_stats->p_time/(cpuf*1000.0),
                  dlsch_turbo_decoding_stats->p_time/(cpuf*1000.0));*/


    if ((err_flag == 0) && (ret>=(1+dlsch->max_ldpc_iterations))) {// a Code segment is in error so break;
      LOG_D(PHY,"AbsSubframe %d.%d CRC failed, segment %d/%d \n",frame%1024,nr_tti_rx,r,harq_process->C-1);
      err_flag = 1;
    }
  }

  int32_t frame_rx_prev = frame;
  int32_t tti_rx_prev = nr_tti_rx - 1;
  if (tti_rx_prev < 0) {
    frame_rx_prev--;
    tti_rx_prev += 10*frame_parms->ttis_per_subframe;
  }
  frame_rx_prev = frame_rx_prev%1024;

  if (err_flag == 1) {
//#if UE_DEBUG_TRACE
    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_tti_rx, harq_pid,harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs,Kr,r,harq_process->round);
//#endif
    harq_process->harq_ack.ack = 0;
    harq_process->harq_ack.harq_id = harq_pid;
    harq_process->harq_ack.send_harq_status = 1;
    harq_process->errors[harq_process->round]++;

    //    printf("Rate: [UE %d] DLSCH: Setting NACK for slot %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,nr_tti_rx,harq_pid,harq_process->round);
    if (harq_process->round >= dlsch->Mlimit) {
      harq_process->status = SCH_IDLE;
      harq_process->round  = 0;
    }

    if(is_crnti)
    {
    LOG_D(PHY,"[UE %d] DLSCH: Setting NACK for nr_tti_rx %d (pid %d, pid status %d, round %d/Max %d, TBS %d)\n",
               phy_vars_ue->Mod_id,nr_tti_rx,harq_pid,harq_process->status,harq_process->round,dlsch->Mdlharq,harq_process->TBS);
    }

    return((1 + dlsch->max_ldpc_iterations));
  } else {
//#if UE_DEBUG_TRACE
    LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for nr_tti_rx %d TBS %d mcs %d nb_rb %d harq_process->round %d\n",
	  phy_vars_ue->Mod_id,nr_tti_rx,harq_process->TBS,harq_process->mcs,harq_process->nb_rb, harq_process->round);
//#endif

    harq_process->status = SCH_IDLE;
    harq_process->round  = 0;
    harq_process->harq_ack.ack = 1;
    harq_process->harq_ack.harq_id = harq_pid;
    harq_process->harq_ack.send_harq_status = 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_tti_rx %d (pid %d, round %d, TBS %d)\n",phy_vars_ue->Mod_id,nr_tti_rx,harq_pid,harq_process->round,harq_process->TBS);
    }
    //LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for subframe %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round);

  }

  // Reassembly of Transport block here
  offset = 0;
  Kr = harq_process->K;
  Kr_bytes = Kr>>3;

  /*
  printf("harq_pid %d\n",harq_pid);
  printf("F %d, Fbytes %d\n",harq_process->F,harq_process->F>>3);
  printf("C %d\n",harq_process->C);
  */

  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_COMBINE_SEG, VCD_FUNCTION_IN);

  for (r=0; r<harq_process->C; r++) {

    memcpy(harq_process->b+offset,
	   harq_process->c[r],
	   Kr_bytes- - (harq_process->F>>3) -((harq_process->C>1)?3:0));
    offset += (Kr_bytes - (harq_process->F>>3) - ((harq_process->C>1)?3:0));

#ifdef DEBUG_DLSCH_DECODING
    printf("Segment %u : Kr= %u bytes\n",r,Kr_bytes);
    printf("copied %d bytes to b sequence (harq_pid %d)\n",
              (Kr_bytes - (harq_process->F>>3)-((harq_process->C>1)?3:0)),harq_pid);
              printf("b[0] = %x,c[%d] = %x\n",
              harq_process->b[offset],
              harq_process->F>>3,
              harq_process->c[r]);

              /*printf ("Printing payload bytes:");
                for (int i = 0; i < Kr_bytes; i++){
                printf("%d : %d \n", i, harq_process->b[i]);
                }*/
#endif

#if defined(ENABLE_PHY_PAYLOAD_DEBUG)
           if (frame%100 == 0){
              LOG_I (PHY, "Printing 10 first payload bytes at frame: %d ", frame);
              for (int i = 0; i <10 ; i++){ //Kr_bytes
            	  LOG_I(PHY, "[%d] : %x ", i, harq_process->b[i]);
              }
          }
#endif

  }

  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_COMBINE_SEG, VCD_FUNCTION_OUT);

  dlsch->last_iteration_cnt = ret;

  return(ret);
}

#ifdef UE_DLSCH_PARALLELISATION
uint32_t  nr_dlsch_decoding_mthread(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_tti_rx,
                                    uint8_t harq_pid,
                                    uint8_t is_crnti,
                                    uint8_t llr8_flag)
{

#if UE_TIMING_TRACE
  time_stats_t *dlsch_rate_unmatching_stats=&phy_vars_ue->dlsch_rate_unmatching_stats;
  time_stats_t *dlsch_turbo_decoding_stats=&phy_vars_ue->dlsch_turbo_decoding_stats;
  time_stats_t *dlsch_deinterleaving_stats=&phy_vars_ue->dlsch_deinterleaving_stats;
#endif
  uint32_t A,E;
  uint32_t G;
  uint32_t ret,offset;
  uint32_t r,r_offset=0,Kr=8424,Kr_bytes,err_flag=0,K_bytes_F;
  uint8_t crc_type;
  //UE_rxtx_proc_t *proc = &phy_vars_ue->proc;
  int32_t no_iteration_ldpc,length_dec;
  /*uint8_t C;
  uint8_t Qm;
  uint8_t r_thread;
  uint32_t Er, Gp,GpmodC;*/
  t_nrLDPC_dec_params decParams;
  t_nrLDPC_dec_params* p_decParams = &decParams;
  t_nrLDPC_time_stats procTime;
  t_nrLDPC_time_stats* p_procTime =&procTime ;
  int8_t llrProcBuf[NR_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32)));
    if (!harq_process) {
    printf("dlsch_decoding.c: NULL harq_process pointer\n");
    return(dlsch->max_ldpc_iterations);
  }
  t_nrLDPC_procBuf* p_nrLDPC_procBuf = harq_process->p_nrLDPC_procBuf[0];
  uint8_t Nl=4;
  int16_t z [68*384];
  int8_t l [68*384];
  //__m128i l;
  //int16_t inv_d [68*384];
  //int16_t *p_invd =&inv_d;
  uint8_t kb, kc;
  uint8_t Ilbrm = 1;
  uint32_t Tbslbrm = 950984;
  uint16_t nb_rb = 30;
  double Coderate = 0.0;
  uint8_t dmrs_type = harq_process->dmrsConfigType;
  //nfapi_nr_config_request_t *cfg = &phy_vars_ue->nrUE_config;
  //uint8_t dmrs_type = cfg->pdsch_config.dmrs_type.value;

  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 length_dmrs = get_num_dmrs(dl_config_pdu->dlDmrsSymbPos); 

  uint32_t i,j;
//  int nbDlProcessing =0;

  __m128i *pv = (__m128i*)&z;
  __m128i *pl = (__m128i*)&l;
  notifiedFIFO_t nf;
  initNotifiedFIFO(&nf);

  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_SEGMENTATION, VCD_FUNCTION_IN);

  if (!dlsch_llr) {
    printf("dlsch_decoding.c: NULL dlsch_llr pointer\n");
    return(dlsch->max_ldpc_iterations);
  }



  if (!frame_parms) {
    printf("dlsch_decoding.c: NULL frame_parms pointer\n");
    return(dlsch->max_ldpc_iterations);
  }

 /* if (nr_tti_rx> (10*frame_parms->ttis_per_subframe-1)) {
    printf("dlsch_decoding.c: Illegal subframe index %d\n",nr_tti_rx);
    return(dlsch->max_ldpc_iterations);
  }

  if (dlsch->harq_ack[nr_tti_rx].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_tti_rx, dlsch->harq_ack[nr_tti_rx].ack);
  }*/

  /*
  if (nb_rb > frame_parms->N_RB_DL) {
    printf("dlsch_decoding.c: Illegal nb_rb %d\n",nb_rb);
    return(max_ldpc_iterations);
    }*/

  /*harq_pid = dlsch->current_harq_pid[phy_vars_ue->current_thread_id[subframe]];
  if (harq_pid >= 8) {
    printf("dlsch_decoding.c: Illegal harq_pid %d\n",harq_pid);
    return(max_ldpc_iterations);
  }
  */

  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*length_dmrs, 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, length_dmrs, harq_process->Qm,harq_process->Nl);

  G = harq_process->G;

  LOG_D(PHY,"DLSCH Decoding main, harq_pid %d TBS %d G %d, nb_re_dmrs %d, length_dmrs %d  mcs %d Nl %d nb_symb_sch %d nb_rb %d\n",harq_pid,A,G, nb_re_dmrs, length_dmrs, harq_process->mcs, harq_process->Nl, nb_symb_sch,nb_rb);

  proc->decoder_main_available = 1;
  proc->decoder_thread_available = 0;
  proc->decoder_thread_available1 = 0;
  //get_G(frame_parms,nb_rb,dlsch->rb_alloc,mod_order,num_pdcch_symbols,phy_vars_ue->frame,subframe);

  //  printf("DLSCH Decoding, harq_pid %d Ndi %d\n",harq_pid,harq_process->Ndi);

  if ((harq_process->R)<1024)
    Coderate = (float) (harq_process->R) /(float) 1024;
  else
    Coderate = (float) (harq_process->R) /(float) 2048;

  if ((A <=292) || ((A<=3824) && (Coderate <= 0.6667)) || Coderate <= 0.25)
  {
    p_decParams->BG = 2;
    if (Coderate < 0.3333){
      p_decParams->R = 15;
      kc = 52;
    }
    else if (Coderate <0.6667){
      p_decParams->R = 13;
      kc = 32;
    }
    else {
      p_decParams->R = 23;
      kc = 17;
    }
  }
  else{
    p_decParams->BG = 1;
    if (Coderate < 0.6667){
      p_decParams->R = 13;
      kc = 68;
    }
    else if (Coderate <0.8889){
      p_decParams->R = 23;
      kc = 35;
    }
    else {
      p_decParams->R = 89;
      kc = 27;
    }
  }

  if (harq_process->round == 0) {
      // This is a new packet, so compute quantities regarding segmentation
	  if (A > 3824)
	  	  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,
                      &harq_process->F,
                      p_decParams->BG);


    }
    
    p_decParams->Z = harq_process->Z;

  //printf("coderate %f kc %d \n", Coderate, kc);
  p_decParams->numMaxIter = dlsch->max_ldpc_iterations;
  p_decParams->outMode= 0;

  err_flag = 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));
  }
#ifdef DEBUG_DLSCH_DECODING
  printf("Segmentation: C %d, K %d\n",harq_process->C,harq_process->K);
#endif

  notifiedFIFO_elt_t *res_dl;
  opp_enabled=1;
  if (harq_process->C>1) {
	for (int nb_seg =1 ; nb_seg<harq_process->C; nb_seg++){
	  if ( (res_dl=tryPullTpool(&nf, Tpool_dl)) != NULL ) {
	          pushNotifiedFIFO_nothreadSafe(&freeBlocks_dl,res_dl);
	        }

	  AssertFatal((msgToPush_dl=pullNotifiedFIFO_nothreadSafe(&freeBlocks_dl)) != NULL,"chained list failure");
          nr_rxtx_thread_data_t *curMsg=(nr_rxtx_thread_data_t *)NotifiedFifoData(msgToPush_dl);
	  curMsg->UE=phy_vars_ue;
	  
	  nbDlProcessing++;


	  memset(&curMsg->proc, 0, sizeof(curMsg->proc));
	  curMsg->proc.frame_rx  = proc->frame_rx;
	  curMsg->proc.nr_tti_rx = proc->nr_tti_rx;
	  curMsg->proc.num_seg   = nb_seg;

	  curMsg->proc.eNB_id= eNB_id;
	  curMsg->proc.harq_pid=harq_pid;
	  curMsg->proc.llr8_flag = llr8_flag;

	  msgToPush_dl->key= (nr_tti_rx%2) ? (nb_seg+30): nb_seg;
	  pushTpool(Tpool_dl, msgToPush_dl);

  /*Qm= harq_process->Qm;
    Nl=harq_process->Nl;
    r_thread = harq_process->C/2-1;
    C= harq_process->C;

    Gp = G/Nl/Qm;
    GpmodC = Gp%C;


    if (r_thread < (C-(GpmodC)))
      Er = Nl*Qm * (Gp/C);
    else
      Er = Nl*Qm * ((GpmodC==0?0:1) + (Gp/C));
    printf("mthread Er %d\n", Er);

    printf("mthread instance_cnt_dlsch_td %d\n",  proc->instance_cnt_dlsch_td);*/
	  }
  //proc->decoder_main_available = 1;
  }

    r = 0;  
    if (r==0) r_offset =0;

    Kr = harq_process->K;
    Kr_bytes = Kr>>3;
    K_bytes_F = Kr_bytes-(harq_process->F>>3);

    E = nr_get_E(G, harq_process->C, harq_process->Qm, harq_process->Nl, r);

    /*
    printf("Subblock deinterleaving, dlsch_llr %p, w %p\n",
     dlsch_llr+r_offset,
     &harq_process->w[r]);
    */
#if UE_TIMING_TRACE
    start_meas(dlsch_deinterleaving_stats);
#endif
    nr_deinterleaving_ldpc(E,
                           harq_process->Qm,
                           harq_process->w[r],
                           dlsch_llr+r_offset);

#ifdef DEBUG_DLSCH_DECODING
        for (int i =0; i<16; i++)
              printf("rx output deinterleaving w[%d]= %d r_offset %u\n", i,harq_process->w[r][i], r_offset);
#endif

#if UE_TIMING_TRACE
    stop_meas(dlsch_deinterleaving_stats);
#endif

#if UE_TIMING_TRACE
    start_meas(dlsch_rate_unmatching_stats);
#endif

#ifdef DEBUG_DLSCH_DECODING
    LOG_D(PHY,"HARQ_PID %d Rate Matching Segment %d (coded bits %d,unpunctured/repeated bits %d, TBS %d, mod_order %d, nb_rb %d, Nl %d, rv %d, round %d)...\n",
          harq_pid,r, G,
          Kr*3,
          harq_process->TBS,
          harq_process->Qm,
          harq_process->nb_rb,
          harq_process->Nl,
          harq_process->rvidx,
          harq_process->round);
#endif

    // for tbslbrm calculation according to 5.4.2.1 of 38.212
    if (harq_process->Nl < Nl)
      Nl = harq_process->Nl;

    Tbslbrm = nr_compute_tbslbrm(harq_process->mcs_table,nb_rb,harq_process->Nl);

    if (nr_rate_matching_ldpc_rx(Ilbrm,
                                 Tbslbrm,
                                 p_decParams->BG,
                                 p_decParams->Z,
                                 harq_process->d[r],
                                 harq_process->w[r],
                                 harq_process->C,
                                 harq_process->rvidx,
                                 (harq_process->round==0)?1:0,
                                 E,
				 harq_process->F,
				 Kr-harq_process->F-2*(p_decParams->Z))==-1) {
#if UE_TIMING_TRACE
      stop_meas(dlsch_rate_unmatching_stats);
#endif
      LOG_E(PHY,"dlsch_decoding.c: Problem in rate_matching\n");
      return(dlsch->max_ldpc_iterations);
    } else
    {
#if UE_TIMING_TRACE
      stop_meas(dlsch_rate_unmatching_stats);
#endif
    }

    //for (int i =0; i<16; i++)
    //      printf("rx output ratematching d[%d]= %d r_offset %d\n", i,harq_process->d[r][i], r_offset);

    //r_offset += E;
    //printf("main thread r_offset %d\n",r_offset);
 
#ifdef DEBUG_DLSCH_DECODING   
    for (int i =0; i<16; i++)
      printf("rx output ratematching d[%d]= %d r_offset %u\n", i,harq_process->d[r][i], r_offset);
#endif

#ifdef DEBUG_DLSCH_DECODING

    if (r==0) {
      write_output("decoder_llr.m","decllr",dlsch_llr,G,1,0);
      write_output("decoder_in.m","dec",&harq_process->d[0][96],(3*8*Kr_bytes)+12,1,0);
    }

    printf("decoder input(segment %u) :",r);
    for (int i=0;i<(3*8*Kr_bytes);i++)
      printf("%d : %d\n",i,harq_process->d[r][i]);
    printf("\n");
#endif


    //    printf("Clearing c, %p\n",harq_process->c[r]);
    memset(harq_process->c[r],0,Kr_bytes);

    //    printf("done\n");
    if (harq_process->C == 1){
      if (A > 3824)
    	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;
    }

    //#ifndef __AVX2__

    if (err_flag == 0) {
/*
        LOG_D(PHY, "LDPC algo Kr=%d cb_cnt=%d C=%d nbRB=%d crc_type %d TBSInput=%d TBSHarq=%d TBSplus24=%d mcs=%d Qm=%d RIV=%d round=%d maxIter %d\n",
                            Kr,r,harq_process->C,harq_process->nb_rb,crc_type,A,harq_process->TBS,
                            harq_process->B,harq_process->mcs,harq_process->Qm,harq_process->rvidx,harq_process->round,dlsch->max_ldpc_iterations);
*/

#if UE_TIMING_TRACE
      start_meas(dlsch_turbo_decoding_stats);
#endif
      LOG_D(PHY,"mthread AbsSubframe %d.%d Start LDPC segment %d/%d \n",frame%1024,nr_tti_rx,r,harq_process->C-1);

      /*for (int cnt =0; cnt < (kc-2)*p_decParams->Z; cnt++){
        inv_d[cnt] = (1)*harq_process->d[r][cnt];
      }*/

      memset(pv,0,2*p_decParams->Z*sizeof(int16_t));
      //memset(pl,0,2*p_decParams->Z*sizeof(int8_t));
      memset((pv+K_bytes_F),127,harq_process->F*sizeof(int16_t));


      for (i=((2*p_decParams->Z)>>3), j = 0; i < K_bytes_F; i++, j++)
      {
        pv[i]= _mm_loadu_si128((__m128i*)(&harq_process->d[r][8*j]));
      }

      j+=(harq_process->F>>3);
      //      for (i=Kr_bytes,j=K_bytes_F-((2*p_decParams->Z)>>3); i < ((kc*p_decParams->Z)>>3); i++, j++)
      for (i=Kr_bytes; i < ((kc*p_decParams->Z)>>3); i++,j++)
      {
        pv[i]= _mm_loadu_si128((__m128i*)(&harq_process->d[r][8*j]));
      }
      
      for (i=0, j=0; j < ((kc*p_decParams->Z)>>4);  i+=2, j++)
      {
        pl[j] = _mm_packs_epi16(pv[i],pv[i+1]);
      }

      no_iteration_ldpc = nrLDPC_decoder(p_decParams,
               (int8_t*)&pl[0],
               llrProcBuf,
               p_nrLDPC_procBuf,
               p_procTime);

      nb_total_decod++;
      if (no_iteration_ldpc > 10){
        nb_error_decod++;
        ret = 1+dlsch->max_ldpc_iterations;
      }
      else {
        ret=2;
      }

      if (check_crc((uint8_t*)llrProcBuf,length_dec,harq_process->F,crc_type)) {
        printf("Segment %u CRC OK\n",r);
        ret = 2;
      }
      else {
        printf("CRC NOK\n");
        ret = 1+dlsch->max_ldpc_iterations;
      }

    if (!nb_total_decod%10000){
        printf("Error number of iteration LPDC %d %ld/%ld \n", no_iteration_ldpc, nb_error_decod,nb_total_decod);fflush(stdout);
    }

    //else
      //printf("OK number of iteration LPDC %d\n", no_iteration_ldpc);

      for (int m=0; m < Kr>>3; m ++)
      {
        harq_process->c[r][m]= (uint8_t) llrProcBuf[m];
      }

    /*for (int u=0; u < Kr>>3; u ++)
      {
        ullrProcBuf[u]= (uint8_t) llrProcBuf[u];
      }


      printf("output unsigned ullrProcBuf \n");

      for (int j=0; j < Kr>>3; j ++)
      {
        printf(" %d \n", ullrProcBuf[j]);
      }
      printf(" \n");*/
    //printf("output channel decoder %d %d %d %d %d \n", harq_process->c[r][0], harq_process->c[r][1], harq_process->c[r][2],harq_process->c[r][3], harq_process->c[r][4]);

    //printf("output decoder %d %d %d %d %d \n", harq_process->c[r][0], harq_process->c[r][1], harq_process->c[r][2],harq_process->c[r][3], harq_process->c[r][4]);
#ifdef DEBUG_DLSCH_DECODING
      for (int k=0;k<32;k++)
        printf("output decoder [%d] =  0x%02x \n", k, harq_process->c[r][k]);
#endif

#if UE_TIMING_TRACE
      stop_meas(dlsch_turbo_decoding_stats);
#endif
    }


    if ((err_flag == 0) && (ret>=(1+dlsch->max_ldpc_iterations))) {// a Code segment is in error so break;
      LOG_D(PHY,"AbsSubframe %d.%d CRC failed, segment %d/%d \n",frame%1024,nr_tti_rx,r,harq_process->C-1);
      err_flag = 1;
    }
  //} //loop r

  int32_t frame_rx_prev = frame;
  int32_t tti_rx_prev = nr_tti_rx - 1;
  if (tti_rx_prev < 0) {
    frame_rx_prev--;
    tti_rx_prev += 10*frame_parms->ttis_per_subframe;
  }
  frame_rx_prev = frame_rx_prev%1024;

  if (err_flag == 1) {
#if UE_DEBUG_TRACE
    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_tti_rx, harq_pid,harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs,Kr,r,harq_process->round);
#endif
    harq_process->harq_ack.ack = 0;
    harq_process->harq_ack.harq_id = harq_pid;
    harq_process->harq_ack.send_harq_status = 1;
    harq_process->errors[harq_process->round]++;
    harq_process->round++;


    //    printf("Rate: [UE %d] DLSCH: Setting NACK for subframe %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round);
    if (harq_process->round >= dlsch->Mlimit) {
      harq_process->status = SCH_IDLE;
      harq_process->round  = 0;
    }
    if(is_crnti)
    {
    LOG_D(PHY,"[UE %d] DLSCH: Setting NACK for nr_tti_rx %d (pid %d, pid status %d, round %d/Max %d, TBS %d)\n",
               phy_vars_ue->Mod_id,nr_tti_rx,harq_pid,harq_process->status,harq_process->round,dlsch->Mlimit,harq_process->TBS);
    }

    return((1+dlsch->max_ldpc_iterations));
  } else {
#if UE_DEBUG_TRACE
      LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for nr_tti_rx %d TBS %d mcs %d nb_rb %d\n",
           phy_vars_ue->Mod_id,nr_tti_rx,harq_process->TBS,harq_process->mcs,harq_process->nb_rb);
#endif

    harq_process->status = SCH_IDLE;
    harq_process->round  = 0;
    harq_process->harq_ack.ack = 1;
    harq_process->harq_ack.harq_id = harq_pid;
    harq_process->harq_ack.send_harq_status = 1;
    //LOG_I(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_tti_rx %d (pid %d, round %d, TBS %d)\n",phy_vars_ue->Mod_id,nr_tti_rx,harq_pid,harq_process->round,harq_process->TBS);
    }
    //LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for subframe %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round);

  }

  // Reassembly of Transport block here
  offset = 0;

  /*
  printf("harq_pid %d\n",harq_pid);
  printf("F %d, Fbytes %d\n",harq_process->F,harq_process->F>>3);
  printf("C %d\n",harq_process->C);
  */
  //uint32_t wait = 0;
  
  /* while((proc->decoder_thread_available == 0) )
  {
          usleep(1);
  }
  proc->decoder_thread_available == 0;*/

  /*notifiedFIFO_elt_t *res1=tryPullTpool(&nf, Tpool);
  if (!res1) {
	  printf("mthread trypull null\n");
	  usleep(1);
	  wait++;
  }*/
  
  //usleep(50);

  proc->decoder_main_available = 0;
  Kr = harq_process->K; //to check if same K in all segments
  Kr_bytes = Kr>>3;
  
  for (r=0; r<harq_process->C; r++) {

      memcpy(harq_process->b+offset,
               harq_process->c[r],
               Kr_bytes- - (harq_process->F>>3) -((harq_process->C>1)?3:0));
      offset += (Kr_bytes - (harq_process->F>>3) - ((harq_process->C>1)?3:0));

#ifdef DEBUG_DLSCH_DECODING
      printf("Segment %u : Kr= %u bytes\n",r,Kr_bytes);
      printf("copied %d bytes to b sequence (harq_pid %d)\n",
                (Kr_bytes - (harq_process->F>>3)-((harq_process->C>1)?3:0)),harq_pid);
                printf("b[0] = %x,c[%d] = %x\n",
                harq_process->b[offset],
                harq_process->F>>3,
                harq_process->c[r]);
#endif
  }
  
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_SEGMENTATION, VCD_FUNCTION_OUT);

  dlsch->last_iteration_cnt = ret;
  //proc->decoder_thread_available = 0;
  //proc->decoder_main_available = 0;

  return(ret);
}
#endif

#ifdef UE_DLSCH_PARALLELISATION
void nr_dlsch_decoding_process(void *arg)
{
	nr_rxtx_thread_data_t *rxtxD= (nr_rxtx_thread_data_t *)arg;
    UE_nr_rxtx_proc_t *proc = &rxtxD->proc;
    PHY_VARS_NR_UE    *phy_vars_ue   = rxtxD->UE;
    NR_DL_FRAME_PARMS *frame_parms = &phy_vars_ue->frame_parms;
    int llr8_flag1;
    int32_t no_iteration_ldpc,length_dec;
    t_nrLDPC_dec_params decParams;
    t_nrLDPC_dec_params* p_decParams = &decParams;
    t_nrLDPC_time_stats procTime;
    t_nrLDPC_time_stats* p_procTime =&procTime ;
    int8_t llrProcBuf[NR_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32)));
    t_nrLDPC_procBuf* p_nrLDPC_procBuf; 
    int16_t z [68*384];
    int8_t l [68*384];
    //__m128i l;
    //int16_t inv_d [68*384];
    //int16_t *p_invd =&inv_d;
    uint8_t kb, kc;
    uint8_t Ilbrm = 1;
    uint32_t Tbslbrm = 950984;
    uint16_t nb_rb = 30; //to update
    double Coderate = 0.0;
    uint16_t nb_symb_sch = 12;
    uint8_t nb_re_dmrs = 6;
    uint16_t length_dmrs = 1;

    uint32_t i,j;
    uint32_t k;

    __m128i *pv = (__m128i*)&z;
    __m128i *pl = (__m128i*)&l;

    proc->instance_cnt_dlsch_td=-1;
    //proc->nr_tti_rx=proc->sub_frame_start;

    proc->decoder_thread_available = 1;
    

#if UE_TIMING_TRACE
  time_stats_t *dlsch_rate_unmatching_stats=&phy_vars_ue->dlsch_rate_unmatching_stats;
  time_stats_t *dlsch_turbo_decoding_stats=&phy_vars_ue->dlsch_turbo_decoding_stats;
  time_stats_t *dlsch_deinterleaving_stats=&phy_vars_ue->dlsch_deinterleaving_stats;
#endif
  uint32_t A,E;
  uint32_t G;
  uint32_t ret,offset;
  uint32_t r,r_offset=0,Kr,Kr_bytes,err_flag=0,K_bytes_F;
  uint8_t crc_type;
  uint8_t C,Cprime;
  uint8_t Qm;
  uint8_t Nl;
  //uint32_t Er;

  int eNB_id                = proc->eNB_id;
  int harq_pid              = proc->harq_pid;
  llr8_flag1                = proc->llr8_flag;
  int frame                 = proc->frame_rx;
  int slot                  = proc->nr_tti_rx;
  r               	    = proc->num_seg;

  NR_UE_DLSCH_t *dlsch      = phy_vars_ue->dlsch[phy_vars_ue->current_thread_id[slot]][eNB_id][0];
  NR_DL_UE_HARQ_t *harq_process  = dlsch->harq_processes[harq_pid];
  short *dlsch_llr        = phy_vars_ue->pdsch_vars[phy_vars_ue->current_thread_id[slot]][eNB_id]->llr[0];
  //printf("2thread0 llr flag %d tdp flag %d\n",llr8_flag1, tdp->llr8_flag);
  p_nrLDPC_procBuf = harq_process->p_nrLDPC_procBuf[r];
  nb_symb_sch = harq_process->nb_symbols;
  printf("dlsch decoding process frame %d slot %d segment %d r %u nb symb %d \n", frame, proc->nr_tti_rx, proc->num_seg, r, harq_process->nb_symbols);


  /*
  if (nb_rb > frame_parms->N_RB_DL) {
    printf("dlsch_decoding.c: Illegal nb_rb %d\n",nb_rb);
    return(max_ldpc_iterations);
    }*/

  /*harq_pid = dlsch->current_harq_pid[phy_vars_ue->current_thread_id[subframe]];
  if (harq_pid >= 8) {
    printf("dlsch_decoding.c: Illegal harq_pid %d\n",harq_pid);
    return(max_ldpc_iterations);
  }
  */

  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*length_dmrs, nb_rb_oh, 0, harq_process->Nl);

  A = harq_process->TBS; //2072 for QPSK 1/3


  ret = dlsch->max_ldpc_iterations;

  harq_process->G = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, harq_process->Qm,harq_process->Nl);
  G = harq_process->G;

  LOG_D(PHY,"DLSCH Decoding process, harq_pid %d TBS %d G %d mcs %d Nl %d nb_symb_sch %d nb_rb %d\n",harq_pid,A,G, 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<=3824) && (Coderate <= 0.6667)) || Coderate <= 0.25)
  {
    p_decParams->BG = 2;
    if (Coderate < 0.3333){
      p_decParams->R = 15;
      kc = 52;
    }
    else if (Coderate <0.6667){
      p_decParams->R = 13;
      kc = 32;
    }
    else {
      p_decParams->R = 23;
      kc = 17;
    }
  }
  else{
    p_decParams->BG = 1;
    if (Coderate < 0.6667){
      p_decParams->R = 13;
      kc = 68;
    }
    else if (Coderate <0.8889){
      p_decParams->R = 23;
      kc = 35;
    }
    else {
      p_decParams->R = 89;
      kc = 27;
    }
  }    

  harq_process->round  =0;
 // if (harq_process->round == 0) {
    // This is a new packet, so compute quantities regarding segmentation
	if (A > 3824)
	  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,
                    &harq_process->F,
                    p_decParams->BG);

    p_decParams->Z = harq_process->Z;

   // }
    
    //printf("round %d Z %d K %d BG %d\n", harq_process->round, p_decParams->Z, harq_process->K, p_decParams->BG);


  p_decParams->numMaxIter = dlsch->max_ldpc_iterations;
  p_decParams->outMode= 0;

  /*
  else {
    printf("dlsch_decoding.c: Ndi>0 not checked yet!!\n");
    return(max_ldpc_iterations);
  }
  */
  err_flag = 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));
  }*/
#ifdef DEBUG_DLSCH_DECODING
  printf("Segmentation: C %d, Cminus %d, Kminus %d, Kplus %d\n",harq_process->C,harq_process->Cminus,harq_process->Kminus,harq_process->Kplus);
#endif

  opp_enabled=1;
  
  Qm= harq_process->Qm;
  Nl=harq_process->Nl;
  //r_thread = harq_process->C/2-1;
  C= harq_process->C;

  Cprime = C; //assume CBGTI not present

  if (r <= Cprime - ((G/(Nl*Qm))%Cprime) - 1)
    r_offset = Nl*Qm*(G/(Nl*Qm*Cprime));
  else
    r_offset = Nl*Qm*((G/(Nl*Qm*Cprime))+1);

    //  printf("thread0 r_offset %d\n",r_offset);
           
  //for (r=(harq_process->C/2); r<harq_process->C; r++) {
     //    r=1; //(harq_process->C/2);

  r_offset = r*r_offset;

  Kr = harq_process->K;
  Kr_bytes = Kr>>3;
  K_bytes_F = Kr_bytes-(harq_process->F>>3);

  E = nr_get_E(G, harq_process->C, harq_process->Qm, harq_process->Nl, r);

#if UE_TIMING_TRACE
    start_meas(dlsch_deinterleaving_stats);
#endif
    nr_deinterleaving_ldpc(E,
                           harq_process->Qm,
                           harq_process->w[r],
                           dlsch_llr+r_offset);

#ifdef DEBUG_DLSCH_DECODING
    for (int i =0; i<16; i++)
              printf("rx output thread 0 deinterleaving w[%d]= %d r_offset %u\n", i,harq_process->w[r][i], r_offset);
#endif

#if UE_TIMING_TRACE
    stop_meas(dlsch_deinterleaving_stats);
#endif

#if UE_TIMING_TRACE
    start_meas(dlsch_rate_unmatching_stats);
#endif

#ifdef DEBUG_DLSCH_DECODING
    LOG_D(PHY,"HARQ_PID %d Rate Matching Segment %d (coded bits %d,unpunctured/repeated bits %d, TBS %d, mod_order %d, nb_rb %d, Nl %d, rv %d, round %d)...\n",
          harq_pid,r, G,
          Kr*3,
          harq_process->TBS,
          harq_process->Qm,
          harq_process->nb_rb,
          harq_process->Nl,
          harq_process->rvidx,
          harq_process->round);
#endif

    if (Nl<4)
      Tbslbrm = nr_compute_tbslbrm(harq_process->mcs_table,nb_rb,Nl);
    else
      Tbslbrm = nr_compute_tbslbrm(harq_process->mcs_table,nb_rb,4);

    if (nr_rate_matching_ldpc_rx(Ilbrm,
                                 Tbslbrm,
                                 p_decParams->BG,
                                 p_decParams->Z,
                                 harq_process->d[r],
                                 harq_process->w[r],
                                 harq_process->C,
                                 harq_process->rvidx,
                                 (harq_process->round==0)?1:0,
                                 E,
				 harq_process->F,
				 Kr-harq_process->F-2*(p_decParams->Z))==-1) {
#if UE_TIMING_TRACE
      stop_meas(dlsch_rate_unmatching_stats);
#endif
      LOG_E(PHY,"dlsch_decoding.c: Problem in rate_matching\n");
      //return(dlsch->max_ldpc_iterations);
    } else
    {
#if UE_TIMING_TRACE
      stop_meas(dlsch_rate_unmatching_stats);
#endif
    }

    //for (int i =0; i<16; i++)
    //      printf("rx output ratematching d[%d]= %d r_offset %d\n", i,harq_process->d[r][i], r_offset);

    //r_offset += E;

#ifdef DEBUG_DLSCH_DECODING
    if (r==0) {
              write_output("decoder_llr.m","decllr",dlsch_llr,G,1,0);
              write_output("decoder_in.m","dec",&harq_process->d[0][0],(3*8*Kr_bytes)+12,1,0);
    }

    printf("decoder input(segment %u) :",r);
    int i; for (i=0;i<(3*8*Kr_bytes)+12;i++)
      printf("%d : %d\n",i,harq_process->d[r][i]);
      printf("\n");
#endif


    //    printf("Clearing c, %p\n",harq_process->c[r]);
    memset(harq_process->c[r],0,Kr_bytes);

    if (harq_process->C == 1){
    	if (A > 3824)
    	 	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;
    }

    if (err_flag == 0) {
/*
        LOG_D(PHY, "turbo algo Kr=%d cb_cnt=%d C=%d nbRB=%d crc_type %d TBSInput=%d TBSHarq=%d TBSplus24=%d mcs=%d Qm=%d RIV=%d round=%d maxIter %d\n",
                            Kr,r,harq_process->C,harq_process->nb_rb,crc_type,A,harq_process->TBS,
                            harq_process->B,harq_process->mcs,harq_process->Qm,harq_process->rvidx,harq_process->round,dlsch->max_ldpc_iterations);
*/
      if (llr8_flag1) {
        AssertFatal (Kr >= 256, "turbo algo issue Kr=%d cb_cnt=%d C=%d nbRB=%d TBSInput=%d TBSHarq=%d TBSplus24=%d mcs=%d Qm=%d RIV=%d round=%d\n",
            Kr,r,harq_process->C,harq_process->nb_rb,A,harq_process->TBS,harq_process->B,harq_process->mcs,harq_process->Qm,harq_process->rvidx,harq_process->round);
      }
#if UE_TIMING_TRACE
        start_meas(dlsch_turbo_decoding_stats);
#endif
//      LOG_D(PHY,"AbsSubframe %d.%d Start turbo segment %d/%d \n",frame%1024,subframe,r,harq_process->C-1);
/*
        for (int cnt =0; cnt < (kc-2)*p_decParams->Z; cnt++){
              inv_d[cnt] = (1)*harq_process->d[r][cnt];
              }
*/

        memset(pv,0,2*p_decParams->Z*sizeof(int16_t));
        //memset(pl,0,2*p_decParams->Z*sizeof(int8_t));
        memset((pv+K_bytes_F),127,harq_process->F*sizeof(int16_t));

        for (i=((2*p_decParams->Z)>>3), j = 0; i < K_bytes_F; i++, j++)
        {
          pv[i]= _mm_loadu_si128((__m128i*)(&harq_process->d[r][8*j]));
        }

        j+=(harq_process->F>>3);
        //      for (i=Kr_bytes,j=K_bytes_F-((2*p_decParams->Z)>>3); i < ((kc*p_decParams->Z)>>3); i++, j++)
        for (i=Kr_bytes; i < ((kc*p_decParams->Z)>>3); i++,j++)
        {
         pv[i]= _mm_loadu_si128((__m128i*)(&harq_process->d[r][8*j]));
        }

        for (i=0, j=0; j < ((kc*p_decParams->Z)>>4);  i+=2, j++)
        {
          pl[j] = _mm_packs_epi16(pv[i],pv[i+1]);
        }

        no_iteration_ldpc = nrLDPC_decoder(p_decParams,
                                           (int8_t*)&pl[0],
                                           llrProcBuf,
                                           p_nrLDPC_procBuf,
                                           p_procTime);

        // 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",r);
          ret = 2;
        }
        else {
          LOG_D(PHY,"Segment %u CRC NOK\n",r);
          ret = 1+dlsch->max_ldpc_iterations;
        }

    if (no_iteration_ldpc > 10)
      LOG_D(PHY,"Error number of iteration LPDC %d\n", no_iteration_ldpc);
    //else
      //printf("OK number of iteration LPDC %d\n", no_iteration_ldpc);

    for (int m=0; m < Kr>>3; m ++)
                    {
                  harq_process->c[r][m]= (uint8_t) llrProcBuf[m];
                    }

            /*for (int u=0; u < Kr>>3; u ++)
                            {
                      ullrProcBuf[u]= (uint8_t) llrProcBuf[u];
                            }


            printf("output unsigned ullrProcBuf \n");

            for (int j=0; j < Kr>>3; j ++)
                                    {

                              printf(" %d \n", ullrProcBuf[j]);

                                    }
          printf(" \n");*/
#ifdef DEBUG_DLSCH_DECODING       
  for (int k=0;k<2;k++)
      printf("segment 1 output decoder [%d] =  0x%02x \n", k, harq_process->c[r][k]);
#endif 
    
#if UE_TIMING_TRACE
      stop_meas(dlsch_turbo_decoding_stats);
#endif
    }

    if ((err_flag == 0) && (ret>=(1+dlsch->max_ldpc_iterations))) {// a Code segment is in error so break;
//      LOG_D(PHY,"AbsSubframe %d.%d CRC failed, segment %d/%d \n",frame%1024,subframe,r,harq_process->C-1);
      err_flag = 1;
    }
  //}

  proc->decoder_thread_available = 1;
  //proc->decoder_main_available = 0;
}

void *dlsch_thread(void *arg) {
  //this thread should be over the processing thread to keep in real time
  PHY_VARS_NR_UE *UE = (PHY_VARS_NR_UE *) arg;
  notifiedFIFO_t nf;
  initNotifiedFIFO(&nf);
  notifiedFIFO_elt_t *res_dl;
  initNotifiedFIFO_nothreadSafe(&freeBlocks_dl);

  for (int i=0; i<RX_NB_TH_DL+1; i++){
    pushNotifiedFIFO_nothreadSafe(&freeBlocks_dl,
                                  newNotifiedFIFO_elt(sizeof(nr_rxtx_thread_data_t), 0,&nf,nr_dlsch_decoding_process));}

  while (!oai_exit) {

    notifiedFIFO_elt_t *res;

    while (nbDlProcessing >= RX_NB_TH_DL) {
      if ( (res=tryPullTpool(&nf, Tpool_dl)) != NULL ) {
        nr_rxtx_thread_data_t *tmp=(nr_rxtx_thread_data_t *)res->msgData;
        //nbDlProcessing--;
        pushNotifiedFIFO_nothreadSafe(&freeBlocks_dl,res);
      }

      usleep(200);
    }
    
    res_dl=pullTpool(&nf, Tpool_dl);
    nbDlProcessing--;
	pushNotifiedFIFO_nothreadSafe(&freeBlocks_dl,res_dl);
    

    //msgToPush->key=0;
    //pushTpool(Tpool, msgToPush);

  } // while !oai_exit

  return NULL;
}

#endif