phy_procedures_lte_eNb.c 77.7 KB
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/*
 * 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
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 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
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 * 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
 */
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/*! \file phy_procedures_lte_eNB.c
 * \brief Implementation of eNB procedures from 36.213 LTE specifications
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 * \author R. Knopp, F. Kaltenberger, N. Nikaein, X. Foukas
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 * \date 2011
 * \version 0.1
 * \company Eurecom
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 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr,navid.nikaein@eurecom.fr, x.foukas@sms.ed.ac.uk
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 * \note
 * \warning
 */

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#include "PHY/defs_eNB.h"
#include "PHY/phy_extern.h"
#include "SCHED/sched_eNB.h"
#include "SCHED/sched_common_extern.h"
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#include "PHY/LTE_ESTIMATION/lte_estimation.h"
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#include "nfapi_interface.h"
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#include "fapi_l1.h"
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#include "common/utils/LOG/log.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
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#include "assertions.h"
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#include "msc.h"
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#include <time.h>

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#if defined(ENABLE_ITTI)
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#include "intertask_interface.h"
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#endif

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extern uint8_t nfapi_mode;
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int16_t get_hundred_times_delta_IF_eNB(PHY_VARS_eNB *eNB,uint16_t UE_id,uint8_t harq_pid, uint8_t bw_factor)
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{
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  uint32_t Nre,sumKr,MPR_x100,Kr,r;
  uint16_t beta_offset_pusch;

  DevAssert( UE_id < NUMBER_OF_UE_MAX+1 );
  DevAssert( harq_pid < 8 );

  Nre = eNB->ulsch[UE_id]->harq_processes[harq_pid]->Nsymb_initial *
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    eNB->ulsch[UE_id]->harq_processes[harq_pid]->nb_rb*12;
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  sumKr = 0;

  for (r=0; r<eNB->ulsch[UE_id]->harq_processes[harq_pid]->C; r++) {
    if (r<eNB->ulsch[UE_id]->harq_processes[harq_pid]->Cminus)
      Kr = eNB->ulsch[UE_id]->harq_processes[harq_pid]->Kminus;
    else
      Kr = eNB->ulsch[UE_id]->harq_processes[harq_pid]->Kplus;

    sumKr += Kr;
  }

  if (Nre==0)
    return(0);

  MPR_x100 = 100*sumKr/Nre;
  // Note: MPR=is the effective spectral efficiency of the PUSCH
  // FK 20140908 sumKr is only set after the ulsch_encoding

  beta_offset_pusch = 8;
  //(eNB->ulsch[UE_id]->harq_processes[harq_pid]->control_only == 1) ? eNB->ulsch[UE_id]->beta_offset_cqi_times8:8;

  DevAssert( UE_id < NUMBER_OF_UE_MAX );
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  //#warning "This condition happens sometimes. Need more investigation" // navid
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  //DevAssert( MPR_x100/6 < 100 );

  if (1==1) { //eNB->ul_power_control_dedicated[UE_id].deltaMCS_Enabled == 1) {
    // This is the formula from Section 5.1.1.1 in 36.213 10*log10(deltaIF_PUSCH = (2^(MPR*Ks)-1)*beta_offset_pusch)
    if (bw_factor == 1) {
      uint8_t nb_rb = eNB->ulsch[UE_id]->harq_processes[harq_pid]->nb_rb;
      return(hundred_times_delta_TF[MPR_x100/6]+10*dB_fixed_times10((beta_offset_pusch)>>3)) + hundred_times_log10_NPRB[nb_rb-1];
    } else
      return(hundred_times_delta_TF[MPR_x100/6]+10*dB_fixed_times10((beta_offset_pusch)>>3));
  } else {
    return(0);
  }
}


int16_t get_hundred_times_delta_IF_mac(module_id_t module_idP, uint8_t CC_id, rnti_t rnti, uint8_t harq_pid)
{
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  int8_t UE_id;

  if ((RC.eNB == NULL) || (module_idP > RC.nb_inst) || (CC_id > RC.nb_CC[module_idP])) {
    LOG_E(PHY,"get_UE_stats: No eNB found (or not allocated) for Mod_id %d,CC_id %d\n",module_idP,CC_id);
    return -1;
  }

  UE_id = find_ulsch( rnti, RC.eNB[module_idP][CC_id],SEARCH_EXIST);

  if (UE_id == -1) {
    // not found
    return 0;
  }

  return get_hundred_times_delta_IF_eNB( RC.eNB[module_idP][CC_id], UE_id, harq_pid, 0 );
}

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int oai_nfapi_rach_ind(nfapi_rach_indication_t *rach_ind);
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lte_subframe_t get_subframe_direction(uint8_t Mod_id,uint8_t CC_id,uint8_t subframe)
{
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  return(subframe_select(&RC.eNB[Mod_id][CC_id]->frame_parms,subframe));
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}
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void pmch_procedures(PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc) {
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#if (LTE_RRC_VERSION >= MAKE_VERSION(10, 0, 0))
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  MCH_PDU *mch_pduP=NULL;
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  //  uint8_t sync_area=255;
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#endif
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  int             subframe = proc->subframe_tx;
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  AssertFatal (1 == 0, "pmch not tested for the moment, exiting\n");
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  // This is DL-Cell spec pilots in Control region
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  generate_pilots_slot (eNB, eNB->common_vars.txdataF, AMP, subframe << 1, 1);

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#if (LTE_RRC_VERSION >= MAKE_VERSION(10, 0, 0))
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  // if mcch is active, send regardless of the node type: eNB or RN
  // when mcch is active, MAC sched does not allow MCCH and MTCH multiplexing
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  /*
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    mch_pduP = mac_xface->get_mch_sdu(eNB->Mod_id,
    eNB->CC_id,
    proc->frame_tx,
    subframe);
  */
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  if ((mch_pduP->Pdu_size > 0) && (mch_pduP->sync_area == 0)) // TEST: only transmit mcch for sync area 0
    LOG_D(PHY,"[eNB%"PRIu8"] Frame %d subframe %d : Got MCH pdu for MBSFN (MCS %"PRIu8", TBS %d) \n",
	  eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->mcs,
	  eNB->dlsch_MCH->harq_processes[0]->TBS>>3);
  else {
    LOG_D(PHY,"[DeNB %"PRIu8"] Frame %d subframe %d : Do not transmit MCH pdu for MBSFN sync area %"PRIu8" (%s)\n",
	  eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->sync_area,
	  (mch_pduP->Pdu_size == 0)? "Empty MCH PDU":"Let RN transmit for the moment");
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    mch_pduP = NULL;
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  }
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  if (mch_pduP) {
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    fill_eNB_dlsch_MCH (eNB, mch_pduP->mcs, 1, 0);
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    // Generate PMCH
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    generate_mch (eNB, proc, (uint8_t *) mch_pduP->payload);
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  } else {
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    LOG_D (PHY, "[eNB/RN] Frame %d subframe %d: MCH not generated \n", proc->frame_tx, subframe);
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  }
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#endif
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}
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void common_signal_procedures (PHY_VARS_eNB *eNB,int frame, int subframe) {
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  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
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  int **txdataF = eNB->common_vars.txdataF;
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  uint8_t *pbch_pdu=&eNB->pbch_pdu[0];
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  //LOG_D(PHY,"common_signal_procedures: frame %d, subframe %d fdd:%s dir:%s\n",frame,subframe,fp->frame_type == FDD?"FDD":"TDD", subframe_select(fp,subframe) == SF_DL?"DL":"UL?"); 
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  // generate Cell-Specific Reference Signals for both slots
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_RS_TX,1);
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  if(subframe_select(fp,subframe) == SF_S)
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    generate_pilots_slot(eNB,
			 txdataF,
			 AMP,
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			 subframe<<1,1);
  else
    generate_pilots_slot(eNB,
			 txdataF,
			 AMP,
			 subframe<<1,0);

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  // check that 2nd slot is for DL
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  if (subframe_select (fp, subframe) == SF_DL)
    generate_pilots_slot (eNB, txdataF, AMP, (subframe << 1) + 1, 0);

  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME (VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_RS_TX, 0);

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  // First half of PSS/SSS (FDD, slot 0)
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  if (subframe == 0) {
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    if (fp->frame_type == FDD) {
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      generate_pss (txdataF, AMP, fp, (fp->Ncp == NORMAL) ? 6 : 5, 0);
      generate_sss (txdataF, AMP, fp, (fp->Ncp == NORMAL) ? 5 : 4, 0);

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    }
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    /// First half of SSS (TDD, slot 1)
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    if (fp->frame_type == TDD) {
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      generate_sss (txdataF, AMP, fp, (fp->Ncp == NORMAL) ? 6 : 5, 1);
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    }
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    // generate PBCH (Physical Broadcast CHannel) info

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    /// generate PBCH
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    if ((frame&3)==0) {
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      //AssertFatal(eNB->pbch_configured==1,"PBCH was not configured by MAC\n");
      if (eNB->pbch_configured!=1) return;
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      eNB->pbch_configured=0;
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    }
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    T(T_ENB_PHY_MIB, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe),
      T_BUFFER(pbch_pdu, 3));
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    generate_pbch (&eNB->pbch, txdataF, AMP, fp, pbch_pdu, frame & 3);

  } else if ((subframe == 1) && (fp->frame_type == TDD)) {
    generate_pss (txdataF, AMP, fp, 2, 2);
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  }
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  // Second half of PSS/SSS (FDD, slot 10)
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  else if ((subframe == 5) && (fp->frame_type == FDD)) {
    generate_pss (txdataF, AMP, &eNB->frame_parms, (fp->Ncp == NORMAL) ? 6 : 5, 10);
    generate_sss (txdataF, AMP, &eNB->frame_parms, (fp->Ncp == NORMAL) ? 5 : 4, 10);
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  }
  //  Second-half of SSS (TDD, slot 11)
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  else if ((subframe == 5) && (fp->frame_type == TDD)) {
    generate_sss (txdataF, AMP, fp, (fp->Ncp == NORMAL) ? 6 : 5, 11);
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  }
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  // Second half of PSS (TDD, slot 12)
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  else if ((subframe == 6) && (fp->frame_type == TDD)) {
    generate_pss (txdataF, AMP, fp, 2, 12);
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  }
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}
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void pdsch_procedures(PHY_VARS_eNB *eNB,
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		      L1_rxtx_proc_t *proc,
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		      int harq_pid,
		      LTE_eNB_DLSCH_t *dlsch, 
		      LTE_eNB_DLSCH_t *dlsch1,
		      LTE_eNB_UE_stats *ue_stats,
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		      int ra_flag) {
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  int frame=proc->frame_tx;
  int subframe=proc->subframe_tx;
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  LTE_DL_eNB_HARQ_t *dlsch_harq=dlsch->harq_processes[harq_pid];
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  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
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  if (dlsch->rnti == 0x02) {//frame < 200) {
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    LOG_D(PHY,
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	  "[eNB %"PRIu8"][PDSCH %"PRIx16"/%"PRIu8"] Frame %d, subframe %d: Generating PDSCH/DLSCH with input size = %"PRIu16", pdsch_start %d, G %d, nb_rb %"PRIu16", rb0 %x, rb1 %x, TBS %"PRIu16", pmi_alloc %"PRIx64", rv %"PRIu8" (round %"PRIu8")\n",
	  eNB->Mod_id, dlsch->rnti,harq_pid,
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	  frame, subframe, dlsch_harq->TBS/8, dlsch_harq->pdsch_start,
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	  get_G(fp,
		dlsch_harq->nb_rb,
		dlsch_harq->rb_alloc,
		dlsch_harq->Qm,
		dlsch_harq->Nl,
		dlsch_harq->pdsch_start,
		frame,
		subframe,
		dlsch_harq->mimo_mode==TM7?7:0),
	  dlsch_harq->nb_rb,
	  dlsch_harq->rb_alloc[0],
	  dlsch_harq->rb_alloc[1],
	  dlsch_harq->TBS,
	  pmi2hex_2Ar1(dlsch_harq->pmi_alloc),
	  dlsch_harq->rvidx,
	  dlsch_harq->round);
  }    
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  MSC_LOG_TX_MESSAGE(
		     MSC_PHY_ENB,MSC_PHY_UE,
		     NULL,0,
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		     "%05u:%02u PDSCH/DLSCH input size = %"PRIu16", G %d, nb_rb %"PRIu16", TBS %"PRIu16", pmi_alloc %"PRIx16", rv %"PRIu8" (round %"PRIu8")",
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		     frame, subframe,
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		     dlsch_harq->TBS/8,
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		     get_G(fp,
			   dlsch_harq->nb_rb,
			   dlsch_harq->rb_alloc,
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			   dlsch_harq->Qm,
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			   dlsch_harq->Nl,
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			   dlsch_harq->pdsch_start,
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			   frame,
			   subframe,
			   dlsch_harq->mimo_mode==TM7?7:0),
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		     dlsch_harq->nb_rb,
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		     dlsch_harq->TBS,
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		     pmi2hex_2Ar1(dlsch_harq->pmi_alloc),
		     dlsch_harq->rvidx,
		     dlsch_harq->round);
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  if (ue_stats) ue_stats->dlsch_sliding_cnt++;
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  if (dlsch_harq->round == 0) {
    if (ue_stats)
      ue_stats->dlsch_trials[harq_pid][0]++;
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  } else {
    ue_stats->dlsch_trials[harq_pid][dlsch_harq->round]++;
#ifdef DEBUG_PHY_PROC
#ifdef DEBUG_DLSCH
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    LOG_D (PHY, "[eNB] This DLSCH is a retransmission\n");
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#endif
#endif
  }
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  if (dlsch->rnti!=0xffff) LOG_D(PHY,"Generating DLSCH/PDSCH pdu:%p pdsch_start:%d frame:%d subframe:%d nb_rb:%d rb_alloc:%d Qm:%d Nl:%d round:%d\n",
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	dlsch_harq->pdu,dlsch_harq->pdsch_start,frame,subframe,dlsch_harq->nb_rb,dlsch_harq->rb_alloc[0],dlsch_harq->Qm,dlsch_harq->Nl,dlsch_harq->round);
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  // 36-212 
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  if (nfapi_mode == 0 || nfapi_mode == 1) { // monolthic OR PNF - do not need turbo encoding on VNF
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    if (dlsch_harq->pdu==NULL){
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      LOG_E(PHY,"dlsch_harq->pdu == NULL SFN/SF:%04d%d dlsch[rnti:%x] dlsch_harq[pdu:%p pdsch_start:%d Qm:%d Nl:%d round:%d nb_rb:%d rb_alloc[0]:%d]\n", frame,subframe,dlsch->rnti, dlsch_harq->pdu,dlsch_harq->pdsch_start,dlsch_harq->Qm,dlsch_harq->Nl,dlsch_harq->round,dlsch_harq->nb_rb,dlsch_harq->rb_alloc[0]);
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      return;
    }
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    start_meas(&eNB->dlsch_encoding_stats);

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    dlsch_encoding_all(eNB,
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		       dlsch_harq->pdu,
		       dlsch_harq->pdsch_start,
		       dlsch,
		       frame,
		       subframe,
		       &eNB->dlsch_rate_matching_stats,
		       &eNB->dlsch_turbo_encoding_stats,
		       &eNB->dlsch_turbo_encoding_waiting_stats,
		       &eNB->dlsch_turbo_encoding_main_stats,
		       &eNB->dlsch_turbo_encoding_wakeup_stats0,
		       &eNB->dlsch_turbo_encoding_wakeup_stats1,
		       &eNB->dlsch_interleaving_stats);

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    stop_meas(&eNB->dlsch_encoding_stats);
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    if(eNB->dlsch_encoding_stats.p_time>500*3000 && opp_enabled == 1)
      {
	print_meas_now(&eNB->dlsch_encoding_stats,"total coding",stderr);
      }
    // 36-211
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    start_meas(&eNB->dlsch_scrambling_stats);
    dlsch_scrambling(fp,
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		     0,
		     dlsch,
		     harq_pid,
		     get_G(fp,
			   dlsch_harq->nb_rb,
			   dlsch_harq->rb_alloc,
			   dlsch_harq->Qm,
			   dlsch_harq->Nl,
			   dlsch_harq->pdsch_start,
			   frame,subframe,
			   0),
		     0,
		     frame,
		     subframe<<1);
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    stop_meas(&eNB->dlsch_scrambling_stats);

    start_meas(&eNB->dlsch_modulation_stats);
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    dlsch_modulation(eNB,
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		     eNB->common_vars.txdataF,
		     AMP,
		     frame,
		     subframe,
		     dlsch_harq->pdsch_start,
		     dlsch,
		     dlsch1);
  
    stop_meas(&eNB->dlsch_modulation_stats);
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  }
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#ifdef PHY_TX_THREAD
  dlsch->active[subframe] = 0;
#else
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  dlsch->active = 0;
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#endif
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  dlsch_harq->round++;
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  LOG_D(PHY,"Generating DLSCH/PDSCH dlsch_harq[round:%d]\n",dlsch_harq->round);
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}
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void phy_procedures_eNB_TX(PHY_VARS_eNB *eNB,
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			   L1_rxtx_proc_t *proc,
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			   int do_meas)
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{
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  int frame=proc->frame_tx;
  int subframe=proc->subframe_tx;
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  uint32_t i,aa;
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  uint8_t harq_pid;
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  int16_t UE_id=0;
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  uint8_t num_pdcch_symbols=0;
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  uint8_t num_dci=0;
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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  uint8_t         num_mdci = 0;
#endif
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  uint8_t ul_subframe;
  uint32_t ul_frame;
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  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
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  LTE_UL_eNB_HARQ_t *ulsch_harq;
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  if ((fp->frame_type == TDD) && (subframe_select (fp, subframe) == SF_UL))
    return;
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX+(eNB->CC_id),1);
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  if (do_meas==1) start_meas(&eNB->phy_proc_tx);
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  if (do_meas==1) start_meas(&eNB->dlsch_common_and_dci);
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  // clear the transmit data array for the current subframe
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  for (aa = 0; aa < fp->nb_antenna_ports_eNB; aa++) {
    memset (&eNB->common_vars.txdataF[aa][subframe * fp->ofdm_symbol_size * (fp->symbols_per_tti)], 0, fp->ofdm_symbol_size * (fp->symbols_per_tti) * sizeof (int32_t));
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  }
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  if (nfapi_mode == 0 || nfapi_mode == 1) {
    if (is_pmch_subframe(frame,subframe,fp)) {
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      pmch_procedures(eNB,proc);
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    }
    else {
      // this is not a pmch subframe, so generate PSS/SSS/PBCH
      common_signal_procedures(eNB,proc->frame_tx, proc->subframe_tx);
    }
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  }
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  // clear existing ulsch dci allocations before applying info from MAC  (this is table
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  ul_subframe = pdcch_alloc2ul_subframe (fp, subframe);
  ul_frame = pdcch_alloc2ul_frame (fp, frame, subframe);
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  // clear previous allocation information for all UEs
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  for (i = 0; i < NUMBER_OF_UE_MAX; i++) {
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    if (eNB->dlsch[i][0])
      eNB->dlsch[i][0]->subframe_tx[subframe] = 0;
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  }
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  /* TODO: check the following test - in the meantime it is put back as it was before */
  //if ((ul_subframe < 10)&&
  //    (subframe_select(fp,ul_subframe)==SF_UL)) { // This means that there is a potential UL subframe that will be scheduled here
  if (ul_subframe < 10) { // This means that there is a potential UL subframe that will be scheduled here
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    for (i=0; i<NUMBER_OF_UE_MAX; i++) {
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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      if (eNB->ulsch[i] && eNB->ulsch[i]->ue_type >0) harq_pid = 0;
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      else 
#endif
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	harq_pid = subframe2harq_pid(fp,ul_frame,ul_subframe);
      
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      if (eNB->ulsch[i]) {
	ulsch_harq = eNB->ulsch[i]->harq_processes[harq_pid];
	
	/* Store first_rb and n_DMRS for correct PHICH generation below.
	 * For PHICH generation we need "old" values of last scheduling
	 * for this HARQ process. 'generate_eNB_dlsch_params' below will
	 * overwrite first_rb and n_DMRS and 'generate_phich_top', done
	 * after 'generate_eNB_dlsch_params', would use the "new" values
	 * instead of the "old" ones.
	 *
	 * This has been tested for FDD only, may be wrong for TDD.
	 *
	 * TODO: maybe we should restructure the code to be sure it
	 *       is done correctly. The main concern is if the code
	 *       changes and first_rb and n_DMRS are modified before
	 *       we reach here, then the PHICH processing will be wrong,
	 *       using wrong first_rb and n_DMRS values to compute
	 *       ngroup_PHICH and nseq_PHICH.
	 *
	 * TODO: check if that works with TDD.
	 */
	ulsch_harq->previous_first_rb = ulsch_harq->first_rb;
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	ulsch_harq->previous_n_DMRS = ulsch_harq->n_DMRS;
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      }
    }
  }
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  num_pdcch_symbols = eNB->pdcch_vars[subframe&1].num_pdcch_symbols;
  num_dci           = eNB->pdcch_vars[subframe&1].num_dci;
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  LOG_D(PHY,"num_pdcch_symbols %"PRIu8",number dci %"PRIu8"\n",num_pdcch_symbols, num_dci);
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  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,num_pdcch_symbols);
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  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME (VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO, (frame * 10) + subframe);
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  if (num_dci > 0)
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    LOG_D(PHY,"[eNB %"PRIu8"] Frame %d, subframe %d: Calling generate_dci_top (pdcch) (num_dci %"PRIu8") num_pdcch_symbols:%d\n",eNB->Mod_id,frame, subframe, num_dci, num_pdcch_symbols);
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PDCCH_TX,1);
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  if (nfapi_mode == 0 || nfapi_mode == 1) {
    generate_dci_top(num_pdcch_symbols,
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		     num_dci,
		     &eNB->pdcch_vars[subframe&1].dci_alloc[0],
		     0,
		     AMP,
		     fp,
		     eNB->common_vars.txdataF,
		     subframe);
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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    num_mdci = eNB->mpdcch_vars[subframe &1].num_dci;
    if (num_mdci > 0) {
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      LOG_D (PHY, "[eNB %" PRIu8 "] Frame %d, subframe %d: Calling generate_mdci_top (mpdcch) (num_dci %" PRIu8 ")\n", eNB->Mod_id, frame, subframe, num_mdci);
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      generate_mdci_top (eNB, frame, subframe, AMP, eNB->common_vars.txdataF);
      
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    }
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#endif
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  }
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  if (do_meas==1) stop_meas(&eNB->dlsch_common_and_dci);
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  if (do_meas==1) start_meas(&eNB->dlsch_ue_specific);
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PDCCH_TX,0);
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_GENERATE_DLSCH,1);
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  // Now scan UE specific DLSCH
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  LTE_eNB_DLSCH_t *dlsch0,*dlsch1;
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  for (UE_id=0; UE_id<NUMBER_OF_UE_MAX; UE_id++) {
    dlsch0 = eNB->dlsch[(uint8_t)UE_id][0]; 
    dlsch1 = eNB->dlsch[(uint8_t)UE_id][1]; 
    
    if ((dlsch0)&&(dlsch0->rnti>0)&&
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#ifdef PHY_TX_THREAD
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	(dlsch0->active[subframe] == 1) 
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#else
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	(dlsch0->active == 1) 
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#endif
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	){
      
      // get harq_pid
      harq_pid = dlsch0->harq_ids[frame%2][subframe];
      AssertFatal(harq_pid>=0,"harq_pid is negative\n");
      
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      if (harq_pid>=8) {

#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
        if (dlsch0->ue_type==0) 
#endif
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	  LOG_E(PHY,"harq_pid:%d corrupt must be 0-7 UE_id:%d frame:%d subframe:%d rnti:%x [ %1d.%1d.%1d.%1d.%1d.%1d.%1d.%1d\n", harq_pid,UE_id,frame,subframe,dlsch0->rnti,
                dlsch0->harq_ids[frame%2][0],
                dlsch0->harq_ids[frame%2][1],
                dlsch0->harq_ids[frame%2][2],
                dlsch0->harq_ids[frame%2][3],
                dlsch0->harq_ids[frame%2][4],
                dlsch0->harq_ids[frame%2][5],
                dlsch0->harq_ids[frame%2][6],
                dlsch0->harq_ids[frame%2][7]);
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      } else
      {
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	  // generate pdsch
	  
	  pdsch_procedures(eNB,
			   proc,
			   harq_pid,
			   dlsch0,
			   dlsch1,
			   &eNB->UE_stats[(uint32_t)UE_id],
			   0);
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      }
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    }
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    else if ((dlsch0)&&(dlsch0->rnti>0)&&
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#ifdef PHY_TX_THREAD
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	     (dlsch0->active[subframe] == 0) 
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#else
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	     (dlsch0->active == 0) 
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#endif
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	     ){
      // clear subframe TX flag since UE is not scheduled for PDSCH in this subframe (so that we don't look for PUCCH later)
      dlsch0->subframe_tx[subframe]=0;
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    }
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    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_GENERATE_DLSCH,0);
    
  }
  
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_GENERATE_PHICH,1);
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  generate_phich_top(eNB,
		     proc,
		     AMP);
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_GENERATE_PHICH,0);
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX+(eNB->CC_id),0);
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  if (do_meas==1) stop_meas(&eNB->dlsch_ue_specific);
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  if (do_meas==1) stop_meas(&eNB->phy_proc_tx);
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}

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void srs_procedures(PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc) {
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  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
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  const int       subframe = proc->subframe_rx;
  const int       frame = proc->frame_rx;
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  int             i;
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  if (is_srs_occasion_common (fp, frame, subframe)) {
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    // Do SRS processing 
    // check if there is SRS and we have to use shortened format
    // TODO: check for exceptions in transmission of SRS together with ACK/NACK
    for (i = 0; i < NUMBER_OF_UE_MAX; i++) {
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      if (eNB->soundingrs_ul_config_dedicated[i].active == 1) {
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	if (lte_srs_channel_estimation (fp, &eNB->common_vars, &eNB->srs_vars[i], &eNB->soundingrs_ul_config_dedicated[i], subframe, 0 /*eNB_id */ )) {
	  LOG_E (PHY, "problem processing SRS\n");
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	}
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	eNB->soundingrs_ul_config_dedicated[i].active = 0;
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      }
    }
  }
}

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void fill_sr_indication(PHY_VARS_eNB *eNB,uint16_t rnti,int frame,int subframe,uint32_t stat) {
  
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  pthread_mutex_lock(&eNB->UL_INFO_mutex);
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  nfapi_sr_indication_t       *sr_ind =         &eNB->UL_INFO.sr_ind;
  nfapi_sr_indication_body_t  *sr_ind_body =    &sr_ind->sr_indication_body;
  nfapi_sr_indication_pdu_t *pdu =   &sr_ind_body->sr_pdu_list[sr_ind_body->number_of_srs];
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  sr_ind->sfn_sf = frame<<4|subframe;
  sr_ind->header.message_id = NFAPI_RX_SR_INDICATION;
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  sr_ind_body->tl.tag = NFAPI_SR_INDICATION_BODY_TAG;
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  pdu->instance_length                                = 0; // don't know what to do with this
  //  pdu->rx_ue_information.handle                       = handle;
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  pdu->rx_ue_information.tl.tag                       = NFAPI_RX_UE_INFORMATION_TAG;
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  pdu->rx_ue_information.rnti                         = rnti;
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  int SNRtimes10 = dB_fixed_times10(stat) - 300;//(10*eNB->measurements.n0_power_dB[0]);
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  pdu->ul_cqi_information.tl.tag = NFAPI_UL_CQI_INFORMATION_TAG;
  
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  if      (SNRtimes10 < -640) pdu->ul_cqi_information.ul_cqi=0;
  else if (SNRtimes10 >  635) pdu->ul_cqi_information.ul_cqi=255;
  else                        pdu->ul_cqi_information.ul_cqi=(640+SNRtimes10)/5;
  pdu->ul_cqi_information.channel = 0;
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  sr_ind_body->number_of_srs++;
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  pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}

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//-----------------------------------------------------------------------------
/*
 * Main handler of PUCCH received
 */
void
uci_procedures(PHY_VARS_eNB *eNB,
               L1_rxtx_proc_t *proc)
//-----------------------------------------------------------------------------
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{
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  uint8_t SR_payload = 0;
  uint8_t pucch_b0b1[4][2] = {{0,0},{0,0},{0,0},{0,0}};
  uint8_t harq_ack[4] = {0,0,0,0};
  uint16_t tdd_multiplexing_mask = 0;
  int32_t metric[4] = {0,0,0,0};
  int32_t metric_SR = 0;
  int32_t max_metric = 0;
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  const int subframe = proc->subframe_rx;
  const int frame = proc->frame_rx;
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  LTE_eNB_UCI *uci = NULL;
  LTE_DL_FRAME_PARMS *fp = &(eNB->frame_parms);

  for (int i = 0; i < NUMBER_OF_UE_MAX; i++) {
    uci = &(eNB->uci_vars[i]);

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    if ((uci->active == 1) && (uci->frame == frame) && (uci->subframe == subframe)) {
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      LOG_D(PHY,"Frame %d, subframe %d: Running uci procedures (type %d) for %d \n",
            frame,
            subframe,
            uci->type,
            i);
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      uci->active = 0;
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      // Null out PUCCH PRBs for noise measurement
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      switch (fp->N_RB_UL) {
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        case 6:
          eNB->rb_mask_ul[0] |= (0x1 | (1 << 5)); // position 5
          break;
        case 15:
          eNB->rb_mask_ul[0] |= (0x1 | (1 << 14)); // position 14
          break;
        case 25:
          eNB->rb_mask_ul[0] |= (0x1 | (1 << 24)); // position 24
          break;
        case 50:
          eNB->rb_mask_ul[0] |= 0x1;
          eNB->rb_mask_ul[1] |= (1 << 17); // position 49 (49-32)
          break;
        case 75:
          eNB->rb_mask_ul[0] |= 0x1;
          eNB->rb_mask_ul[2] |= (1 << 10); // position 74 (74-64)
          break;
        case 100:
          eNB->rb_mask_ul[0] |= 0x1;
          eNB->rb_mask_ul[3] |= (1 << 3); // position 99 (99-96)
          break;
        default:
          LOG_E(PHY,"Unknown number for N_RB_UL %d\n", fp->N_RB_UL);
          break;
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      }
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      SR_payload = 0;
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      switch (uci->type) {
      case SR:
      case HARQ_SR:
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        {
	  int pucch1_thres = (uci->ue_type == 0) ? eNB->pucch1_DTX_threshold : eNB->pucch1_DTX_threshold_emtc[0];
	  metric_SR = rx_pucch(eNB,
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			       uci->pucch_fmt,
			       i,
			       uci->n_pucch_1_0_sr[0],
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			       0, // n2_pucch
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			       uci->srs_active, // shortened format
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			       &SR_payload,
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			       frame,
			       subframe,
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			       pucch1_thres
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0)) 
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			       ,uci->ue_type
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#endif
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			       );
	  LOG_D(PHY,"[eNB %d][SR %x] Frame %d subframe %d Checking SR is %d (uci.type %d SR n1pucch is %d)\n",
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		eNB->Mod_id,
		uci->rnti,
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		frame,
		subframe,
		SR_payload,
		uci->type,
		uci->n_pucch_1_0_sr[0]);
	  if (uci->type == SR) {
	    if (SR_payload == 1) {
	      fill_sr_indication(eNB,uci->rnti,frame,subframe,metric_SR);
	      break;
	    }
	    else {
	      break;
	    }
	  }
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	}
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      case HARQ:
	{
	  int pucch1ab_thres = (uci->ue_type == 0) ? eNB->pucch1ab_DTX_threshold : eNB->pucch1ab_DTX_threshold_emtc[0];	  
	  if (fp->frame_type == FDD) {
	    LOG_D(PHY,"Frame %d Subframe %d Demodulating PUCCH (UCI %d) for ACK/NAK (uci->pucch_fmt %d,uci->type %d.uci->frame %d, uci->subframe %d): n1_pucch0 %d SR_payload %d\n",
		  frame,subframe,i,
		  uci->pucch_fmt,uci->type,
		  uci->frame,uci->subframe,uci->n_pucch_1[0][0],
		  SR_payload);
	    
	    metric[0] = rx_pucch(eNB,
				 uci->pucch_fmt,
				 i,
				 uci->n_pucch_1[0][0],
				 0, //n2_pucch
				 uci->srs_active, // shortened format
				 pucch_b0b1[0],
				 frame,
				 subframe,
				 pucch1ab_thres
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0)) 
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				 ,uci->ue_type
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#endif
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				 );
	    //dump_ulsch(eNB,frame,subframe,0,0); exit(-1);
	    
	    
	    /* cancel SR detection if reception on n1_pucch0 is better than on SR PUCCH resource index, otherwise send it up to MAC */
	    if (uci->type==HARQ_SR && metric[0] > metric_SR) SR_payload = 0;
	    else if (SR_payload == 1) fill_sr_indication(eNB,uci->rnti,frame,subframe,metric_SR);
	    
	    if (uci->type==HARQ_SR && metric[0] <= metric_SR) {
	      /* when transmitting ACK/NACK on SR PUCCH resource index, SR payload is always 1 */
	      SR_payload = 1;
	      
	      metric[0]=rx_pucch(eNB,
				 uci->pucch_fmt,
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				 i,
				 uci->n_pucch_1_0_sr[0],
				 0, //n2_pucch
				 uci->srs_active, // shortened format
				 pucch_b0b1[0],
				 frame,
				 subframe,
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				 pucch1ab_thres
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0)) 
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				 ,uci->ue_type
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#endif
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				 );
	    }
	    
	    
	    LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d pucch1a (FDD) payload %d (metric %d)\n",
		  eNB->Mod_id,
		  uci->rnti,
		  frame,subframe,
		  pucch_b0b1[0][0],metric[0]);
	    
	    uci->stat = metric[0]; 	  
	    fill_uci_harq_indication(eNB,uci,frame,subframe,pucch_b0b1[0],0,0xffff);
	    
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	  }
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	  else { // frame_type == TDD
	    LOG_D(PHY,"Frame %d Subframe %d Demodulating PUCCH (UCI %d) for ACK/NAK (uci->pucch_fmt %d,uci->type %d.uci->frame %d, uci->subframe %d): n1_pucch0 %d SR_payload %d\n",
		  frame,subframe,i,
		  uci->pucch_fmt,uci->type,
		  uci->frame,uci->subframe,uci->n_pucch_1[0][0],
		  SR_payload);
#if 1
	    metric[0] = rx_pucch(eNB,
				 uci->pucch_fmt,
				 i,
				 uci->n_pucch_1[0][0],
				 0, //n2_pucch
				 uci->srs_active, // shortened format
				 pucch_b0b1[0],
				 frame,
				 subframe,
				 pucch1ab_thres
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0)) 
				 ,uci->ue_type
#endif
				 );
	    
	    if (uci->type==HARQ_SR && metric[0] > metric_SR) SR_payload = 0;
	    else if (SR_payload == 1) fill_sr_indication(eNB,uci->rnti,frame,subframe,metric_SR);
	    
	    if (uci->type==HARQ_SR && metric[0] <= metric_SR) {
	      SR_payload = 1;
	      metric[0] = rx_pucch(eNB,
				   pucch_format1b,
				   i,
				   uci->n_pucch_1_0_sr[0],
				   0, //n2_pucch
				   uci->srs_active, // shortened format
				   pucch_b0b1[0],
				   frame,
				   subframe,
				   pucch1ab_thres
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0)) 
				   ,uci->ue_type
#endif
				   );
	      
	    }
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#else
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	    // if SR was detected, use the n1_pucch from SR
	    if (SR_payload==1) {
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#ifdef DEBUG_PHY_PROC
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	      LOG_D (PHY, "[eNB %d][PDSCH %x] Frame %d subframe %d Checking ACK/NAK (%d,%d,%d,%d) format %d with SR\n", eNB->Mod_id,
		     eNB->dlsch[UE_id][0]->rnti, frame, subframe, n1_pucch0, n1_pucch1, n1_pucch2, n1_pucch3, format);
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#endif
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	      metric[0] = rx_pucch (eNB, pucch_format1b, i, uci->n_pucch_1_0_sr[0], 0,    //n2_pucch
				    uci->srs_active,      // shortened format
				    pucch_b0b1[0], frame, subframe, 
				    pucch1ab_thres
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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				    ,uci->ue_type
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#endif
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				    );
	    } else {              //using assigned pucch resources
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#ifdef DEBUG_PHY_PROC
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	      LOG_D (PHY, "[eNB %d][PDSCH %x] Frame %d subframe %d Checking ACK/NAK M=%d (%d,%d,%d,%d) format %d\n", eNB->Mod_id,
		     eNB->dlsch[UE_id][0]->rnti,
		     frame, subframe, uci->num_pucch_resources, uci->n_pucch_1[res][0], uci->n_pucch_1[res][1], uci->n_pucch_1[res][2], uci->n_pucch_1[res][3], uci->pucch_fmt);
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#endif
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	      for (res = 0; res < uci->num_pucch_resources; res++)
		metric[res] = rx_pucch (eNB, uci->pucch_fmt, i, uci->n_pucch_1[res][0], 0,        // n2_pucch
					uci->srs_active,  // shortened format
					pucch_b0b1[res], frame, subframe, 
					pucch1ab_thres
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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					,uci->ue_type
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#endif		  
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					);
	      for (res=0;res<uci->num_pucch_resources;res++)
		metric[res] = rx_pucch(eNB,
				       uci->pucch_fmt,
				       i,
				       uci->n_pucch_1[res][0],
				       0, // n2_pucch
				       uci->srs_active, // shortened format
				       pucch_b0b1[res],
				       frame,
				       subframe,
				       pucch1ab_thres
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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				       ,uci->ue_type
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#endif		  
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				       );
	    }
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#ifdef DEBUG_PHY_PROC
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	    LOG_D(PHY,"RNTI %x type %d SR_payload %d  Frame %d Subframe %d  pucch_b0b1[0][0] %d pucch_b0b1[0][1] %d pucch_b0b1[1][0] %d pucch_b0b1[1][1] %d  \n",
		  uci->rnti,uci->type,SR_payload,frame,subframe,pucch_b0b1[0][0],pucch_b0b1[0][1],pucch_b0b1[1][0],pucch_b0b1[1][1]);
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#endif
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#endif
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	    if (SR_payload == 1) { // this implements Table 7.3.1 from 36.213
	      if (pucch_b0b1[0][0] == 4) { // there isn't a likely transmission
		harq_ack[0] = 4; // DTX
	      }
	      else if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] == 1) { // 1/4/7 ACKs
		harq_ack[0] = 1;
	      }
	      else if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] != 1) { // 2/5/8 ACKs
		harq_ack[0] = 2;
	      }
	      else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] == 1) { // 3/6/9 ACKs
		harq_ack[0] = 3;
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	      }
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	      else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] != 1) { // 0 ACKs, or at least one DL assignment missed
		harq_ack[0] = 0;
	      }
	      uci->stat = metric[0];
	      fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,2,0xffff); // special_bundling mode
	    } 
	    else if ((uci->tdd_bundling == 0) && (uci->num_pucch_resources==2)){ // multiplexing + no SR, implement Table 10.1.3-5 (Rel14) for multiplexing with M=2
	      if (pucch_b0b1[0][0] == 4 ||
		  pucch_b0b1[1][0] == 4) { // there isn't a likely transmission
		harq_ack[0] = 4; // DTX
		harq_ack[1] = 6; // NACK/DTX
	      } 
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	      else {
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		if (metric[1]>metric[0]) {
		  if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 1; // ACK
		    tdd_multiplexing_mask = 0x3;
		  }
		  else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1){
		    harq_ack[0] = 6; // NACK/DTX
		    harq_ack[1] = 1; // ACK
		    tdd_multiplexing_mask = 0x2;
		  }
		  else {
		    harq_ack[0] = 4; // DTX
		    harq_ack[1] = 4; // DTX
		  }
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		}
		else {
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		  if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] == 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 6; // NACK/DTX
		    tdd_multiplexing_mask = 0x1;
		  }
		  else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] != 1){
		    harq_ack[0] = 2; // NACK
		    harq_ack[1] = 6; // NACK/DTX
		  }
		  else {
		    harq_ack[0] = 4; // DTX
		    harq_ack[1] = 4; // DTX
		  }
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		}
	      }
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	      uci->stat = max(metric[0],metric[1]);
	      fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,1,tdd_multiplexing_mask); // multiplexing mode
	    } //else if ((uci->tdd_bundling == 0) && (res==2))
	    else if ((uci->tdd_bundling == 0) && (uci->num_pucch_resources==3)){ // multiplexing + no SR, implement Table 10.1.3-6 (Rel14) for multiplexing with M=3
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	      if (harq_ack[0] == 4 ||
		  harq_ack[1] == 4 ||
		  harq_ack[2] == 4) { // there isn't a likely transmission
		harq_ack[0] = 4; // DTX
		harq_ack[1] = 6; // NACK/DTX
		harq_ack[2] = 6; // NACK/DTX
		max_metric = 0;
	      } 
	      else {
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		max_metric = max(metric[0],max(metric[1],metric[2]));
		
		if (metric[0]==max_metric) {
		  if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] == 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 6; // NACK/DTX
		    tdd_multiplexing_mask = 0x1;
		  }
		  else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] != 1){
		    harq_ack[0] = 2; // NACK
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 6; // NACK/DTX
		  }
		  else {
		    harq_ack[0] = 4; // DTX
		    harq_ack[1] = 4; // DTX
		    harq_ack[2] = 4; // DTX
		  }
		} // if (metric[0]==max_metric) {
		else if (metric[1]==max_metric) {
		  
		  if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 6; // NACK/DTX
		    tdd_multiplexing_mask = 0x3;
		  }
		  else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1 ) {
		    harq_ack[0] = 6; // NACK/DTX
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 6; // NACK/DTX
		    tdd_multiplexing_mask = 0x2;
		  }
		  else {
		    harq_ack[0] = 4; // DTX
		    harq_ack[1] = 4; // DTX
		    harq_ack[2] = 4; // DTX
		  }
		} // if (metric[1]==max_metric) {
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		else {
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		  if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] == 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 1; // ACK
		    tdd_multiplexing_mask = 0x7;
		  }
		  else if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] != 1 ) {
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 1; // ACK
		    tdd_multiplexing_mask = 0x5;
		  }
		  else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] == 1 ) {
		    harq_ack[0] = 6; // NACK/DTX
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 1; // ACK
		    tdd_multiplexing_mask = 0x6;
		  }
		  else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] != 1 ) {
		    harq_ack[0] = 6; // NACK/DTX
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 1; // ACK
		    tdd_multiplexing_mask = 0x4;
		  }
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		}
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		uci->stat = max_metric;
		fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,1,tdd_multiplexing_mask); // multiplexing mode
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	      }
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	    } //else if ((uci->tdd_bundling == 0) && (res==3)) 
	    else if ((uci->tdd_bundling == 0) && (uci->num_pucch_resources==4)){ // multiplexing + no SR, implement Table 10.1.3-7 (Rel14) for multiplexing with M=4
	      if (pucch_b0b1[0][0] == 4 ||
		  pucch_b0b1[1][0] == 4 ||
		  pucch_b0b1[2][0] == 4 ||
		  pucch_b0b1[3][0] == 4) { // there isn't a likely transmission
		harq_ack[0] = 4; // DTX
		harq_ack[1] = 6; // NACK/DTX
		harq_ack[2] = 6; // NACK/DTX
		harq_ack[3] = 6; // NACK/DTX
		max_metric = 0;
	      } else {
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		max_metric = max(metric[0],max(metric[1],max(metric[2],metric[3])));
		
		if (metric[0]==max_metric) {
		  if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] != 1){
		    harq_ack[0] = 2; // NACK
		    harq_ack[1] = 4; // DTX
		    harq_ack[2] = 4; // DTX
		    harq_ack[3] = 4; // DTX
		  }
		  else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] == 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 6; // NACK/DTX
		    harq_ack[3] = 1; // ACK
		    tdd_multiplexing_mask = 0x9;
		  }
		  else if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] == 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 6; // NACK/DTX
		    harq_ack[3] = 6; // NACK/DTX
		    tdd_multiplexing_mask = 0x1;
		  }
		  else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] != 1){
		    harq_ack[0] = 2; // NACK
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 6; // NACK/DTX
		    harq_ack[3] = 6; // NACK/DTX
		  }
		  
		} 
		else if (metric[1]==max_metric) {
		  if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] == 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 1; // ACK
		    harq_ack[3] = 1; // ACK
		    tdd_multiplexing_mask = 0xF;
		  }
		  else if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1 ) {
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 6; // NACK/DTX
		    harq_ack[3] = 6; // NACK/DTX
		    tdd_multiplexing_mask = 0x3;
		  }
		  else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] != 1 ) {
		    harq_ack[0] = 6; // NACK/DTX
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 1; // ACK
		    harq_ack[3] = 1; // ACK
		    tdd_multiplexing_mask = 0xE;
		  }
		  else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1 ) {
		    harq_ack[0] = 6; // NACK/DTX
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 6; // NACK/DTX
		    harq_ack[3] = 6; // NACK/DTX
		    tdd_multiplexing_mask = 0x2;
		  }
		} 
		else if (metric[2]==max_metric) {
		  if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] == 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 1; // ACK
		    harq_ack[3] = 6; // NACK/DTX
		    tdd_multiplexing_mask = 0x7;
		  }
		  else if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] != 1 ) {
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 1; // ACK
		    harq_ack[3] = 6; // NACK/DTX
		    tdd_multiplexing_mask = 0x5;
		  }
		  else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] == 1 ) {
		    harq_ack[0] = 4; // NACK/DTX
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 1; // ACK
		    harq_ack[3] = 4; // NACK/DTX
		    tdd_multiplexing_mask = 0x6;
		  }
		  else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] != 1 ) {
		    harq_ack[0] = 4; // NACK/DTX
		    harq_ack[1] = 4; // NACK/DTX
		    harq_ack[2] = 1; // ACK
		    harq_ack[3] = 4; // NACK/DTX
		    tdd_multiplexing_mask = 0x4;
		  }
		} 
		else { // max_metric[3]=max_metric
		  if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] == 1){
		    harq_ack[0] = 1; // ACK
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 1; // ACK
		    harq_ack[3] = 1; // ACK
		    tdd_multiplexing_mask = 0xD;
		  }
		  else if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] != 1 ) {
		    harq_ack[0] = 6; // NACK/DTX
		    harq_ack[1] = 1; // ACK
		    harq_ack[2] = 6; // NACK/DTX
		    harq_ack[3] = 1; // ACK
		    tdd_multiplexing_mask = 0xA;
		  }
		  else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] == 1 ) {
		    harq_ack[0] = 6; // NACK/DTX
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 1; // ACK
		    harq_ack[3] = 1; // ACK
		    tdd_multiplexing_mask = 0xC;
		  }
		  else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] != 1 ) {
		    harq_ack[0] = 6; // NACK/DTX
		    harq_ack[1] = 6; // NACK/DTX
		    harq_ack[2] = 6; // NACK/DTX
		    harq_ack[3] = 1; // ACK
		    tdd_multiplexing_mask = 0x8;
		  }
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		}
	      }
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	      uci->stat = max_metric;
	      fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,1,tdd_multiplexing_mask); // multiplexing mode
	    } // else if ((uci->tdd_bundling == 0) && (res==4))
	    else { // bundling
	      harq_ack[0] = pucch_b0b1[0][0];
	      harq_ack[1] = pucch_b0b1[0][1];
	      uci->stat = metric[0];
	      LOG_D(PHY,"bundling: (%d,%d), metric %d\n",harq_ack[0],harq_ack[1],uci->stat);
	      fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,0,0xffff); // special_bundling mode
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	    }
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#ifdef DEBUG_PHY_PROC
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	    LOG_D (PHY, "[eNB %d][PDSCH %x] Frame %d subframe %d ACK/NAK metric 0 %d, metric 1 %d, (%d,%d)\n", eNB->Mod_id,
		   eNB->dlsch[UE_id][0]->rnti, frame, subframe, metric0, metric1, pucch_b0b1[0], pucch_b0b1[1]);
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#endif
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	  }
	  break;
	default:
	  AssertFatal (1 == 0, "Unsupported UCI type %d\n", uci->type);
	  break;
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	}
	
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	if (SR_payload == 1) {
	  LOG_D (PHY, "[eNB %d][SR %x] Frame %d subframe %d Got SR for PUSCH, transmitting to MAC\n", eNB->Mod_id, uci->rnti, frame, subframe);
	  
	  if (eNB->first_sr[i] == 1) {    // this is the first request for uplink after Connection Setup, so clear HARQ process 0 use for Msg4
	    eNB->first_sr[i] = 0;
	    eNB->dlsch[i][0]->harq_processes[0]->round = 0;
	    eNB->dlsch[i][0]->harq_processes[0]->status = SCH_IDLE;
	    LOG_D (PHY, "[eNB %d][SR %x] Frame %d subframe %d First SR\n", eNB->Mod_id, eNB->ulsch[i]->rnti, frame, subframe);
	  }
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	}
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      }
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    } // end if ((uci->active == 1) && (uci->frame == frame) && (uci->subframe == subframe)) {
  } // end loop for (int i = 0; i < NUMBER_OF_UE_MAX; i++) {
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}
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void pusch_procedures(PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc)
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{
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  uint32_t ret=0,i;
  uint32_t harq_pid;
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  uint8_t nPRS;
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
  LTE_eNB_ULSCH_t *ulsch;
  LTE_UL_eNB_HARQ_t *ulsch_harq;
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  const int subframe = proc->subframe_rx;
  const int frame    = proc->frame_rx;
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  uint32_t harq_pid0 = subframe2harq_pid(&eNB->frame_parms,frame,subframe);
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  for (i = 0; i < NUMBER_OF_UE_MAX; i++) {
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    ulsch = eNB->ulsch[i];
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    if (ulsch->ue_type > 0) harq_pid = 0; else harq_pid=harq_pid0;
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    ulsch_harq = ulsch->harq_processes[harq_pid];
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    if (ulsch->rnti>0) LOG_D(PHY,"eNB->ulsch[%d]->harq_processes[harq_pid:%d] SFN/SF:%04d%d: PUSCH procedures, UE %d/%x ulsch_harq[status:%d SFN/SF:%04d%d handled:%d]\n",
			     i, harq_pid, frame,subframe,i,ulsch->rnti,
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			     ulsch_harq->status, ulsch_harq->frame, ulsch_harq->subframe, ulsch_harq->handled);
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    if ((ulsch) &&
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	(ulsch->rnti>0) &&
	(ulsch_harq->status == ACTIVE) &&
	(ulsch_harq->frame == frame) &&
	(ulsch_harq->subframe == subframe) &&
	(ulsch_harq->handled == 0)) {
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      // UE has ULSCH scheduling
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      for (int rb=0;
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	   rb<=ulsch_harq->nb_rb;
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	   rb++) {
	int rb2 = rb+ulsch_harq->first_rb;
	eNB->rb_mask_ul[rb2>>5] |= (1<<(rb2&31));
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      }
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      LOG_D(PHY,"[eNB %d] frame %d, subframe %d: Scheduling ULSCH Reception for UE %d \n", eNB->Mod_id, frame, subframe, i);
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      nPRS = fp->pusch_config_common.ul_ReferenceSignalsPUSCH.nPRS[subframe<<1];
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      ulsch->cyclicShift = (ulsch_harq->n_DMRS2 +
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			    fp->pusch_config_common.ul_ReferenceSignalsPUSCH.cyclicShift +
			    nPRS)%12;
      AssertFatal(ulsch_harq->TBS>0,"illegal TBS %d\n",ulsch_harq->TBS); 
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      LOG_D(PHY,
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	    "[eNB %d][PUSCH %d] Frame %d Subframe %d Demodulating PUSCH: dci_alloc %d, rar_alloc %d, round %d, first_rb %d, nb_rb %d, Qm %d, TBS %d, rv %d, cyclic_shift %d (n_DMRS2 %d, cyclicShift_common %d, ), O_ACK %d, beta_cqi %d \n",
	    eNB->Mod_id,harq_pid,frame,subframe,
	    ulsch_harq->dci_alloc,
	    ulsch_harq->rar_alloc,
	    ulsch_harq->round,
	    ulsch_harq->first_rb,
	    ulsch_harq->nb_rb,
	    ulsch_harq->Qm,
	    ulsch_harq->TBS,
	    ulsch_harq->rvidx,
	    ulsch->cyclicShift,
	    ulsch_harq->n_DMRS2,
	    fp->pusch_config_common.ul_ReferenceSignalsPUSCH.cyclicShift,
	    ulsch_harq->O_ACK,
	    ulsch->beta_offset_cqi_times8);
      
      start_meas(&eNB->ulsch_demodulation_stats);
      
      rx_ulsch(eNB,proc, i);
      
      stop_meas(&eNB->ulsch_demodulation_stats);
      
      start_meas(&eNB->ulsch_decoding_stats);
      
      ret = ulsch_decoding(eNB,proc,
			   i,
			   0, // control_only_flag
			   ulsch_harq->V_UL_DAI,
			   ulsch_harq->nb_rb>20 ? 1 : 0);
      
      stop_meas(&eNB->ulsch_decoding_stats);
      
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      LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d RNTI %x RX power (%d,%d) N0 (%d,%d) dB ACK (%d,%d), decoding iter %d ulsch_harq->cqi_crc_status:%d ackBits:%d ulsch_decoding_stats[t:%lld max:%lld]\n",
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	    eNB->Mod_id,harq_pid,
	    frame,subframe,
	    ulsch->rnti,
	    dB_fixed(eNB->pusch_vars[i]->ulsch_power[0]),
	    dB_fixed(eNB->pusch_vars[i]->ulsch_power[1]),
	    30,//eNB->measurements.n0_power_dB[0],
	    30,//eNB->measurements.n0_power_dB[1],
	    ulsch_harq->o_ACK[0],
	    ulsch_harq->o_ACK[1],
	    ret,
	    ulsch_harq->cqi_crc_status,
	    ulsch_harq->O_ACK,
	    eNB->ulsch_decoding_stats.p_time, eNB->ulsch_decoding_stats.max);
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      //compute the expected ULSCH RX power (for the stats)
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      ulsch_harq->delta_TF = get_hundred_times_delta_IF_eNB(eNB,i,harq_pid, 0); // 0 means bw_factor is not considered
      
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      if (RC.mac != NULL) { /* ulsim dose not use RC.mac context. */
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	if (ulsch_harq->cqi_crc_status == 1) {
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#ifdef DEBUG_PHY_PROC
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	  //if (((frame%10) == 0) || (frame < 50))
	  print_CQI(ulsch_harq->o,ulsch_harq->uci_format,0,fp->N_RB_DL);
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#endif
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	  fill_ulsch_cqi_indication(eNB,frame,subframe,ulsch_harq,ulsch->rnti);
	  RC.mac[eNB->Mod_id]->UE_list.UE_sched_ctrl[i].cqi_req_flag &= (~(1 << subframe));
	} else {
	  if(RC.mac[eNB->Mod_id]->UE_list.UE_sched_ctrl[i].cqi_req_flag & (1 << subframe) ){
	    RC.mac[eNB->Mod_id]->UE_list.UE_sched_ctrl[i].cqi_req_flag &= (~(1 << subframe));
	    RC.mac[eNB->Mod_id]->UE_list.UE_sched_ctrl[i].cqi_req_timer=30;
	    LOG_D(PHY,"Frame %d,Subframe %d, We're supposed to get a cqi here. Set cqi_req_timer to 30.\n",frame,subframe);
	  }
	}
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      }
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      if (ret == (1+MAX_TURBO_ITERATIONS)) {
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	T(T_ENB_PHY_ULSCH_UE_NACK, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe), T_INT(ulsch->rnti),
	  T_INT(harq_pid));
	
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	fill_crc_indication(eNB,i,frame,subframe,1); // indicate NAK to MAC
	fill_rx_indication(eNB,i,frame,subframe);  // indicate SDU to MAC
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	LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d UE %d Error receiving ULSCH, round %d/%d (ACK %d,%d)\n",
	      eNB->Mod_id,harq_pid,
	      frame,subframe, i,
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	      ulsch_harq->round,
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	      ulsch->Mlimit,
	      ulsch_harq->o_ACK[0],
	      ulsch_harq->o_ACK[1]);
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	if (ulsch_harq->round >= 3)  {
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	  ulsch_harq->status  = SCH_IDLE;
	  ulsch_harq->handled = 0;
	  ulsch->harq_mask   &= ~(1 << harq_pid);
	  ulsch_harq->round   = 0;
	}
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	MSC_LOG_RX_DISCARDED_MESSAGE(
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				     MSC_PHY_ENB,MSC_PHY_UE,
				     NULL,0,
				     "%05u:%02u ULSCH received rnti %x harq id %u round %d",
				     frame,subframe,
				     ulsch->rnti,harq_pid,
				     ulsch_harq->round-1
				     );
	
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	/* Mark the HARQ process to release it later if max transmission reached
	 * (see below).
	 * MAC does not send the max transmission count, we have to deal with it
	 * locally in PHY.
	 */
	ulsch_harq->handled = 1;
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      }                         // ulsch in error
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      else {
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	fill_crc_indication(eNB,i,frame,subframe,0); // indicate ACK to MAC
	fill_rx_indication(eNB,i,frame,subframe);  // indicate SDU to MAC
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	ulsch_harq->status = SCH_IDLE;
	ulsch->harq_mask &= ~(1 << harq_pid);
	
	T (T_ENB_PHY_ULSCH_UE_ACK, T_INT (eNB->Mod_id), T_INT (frame), T_INT (subframe), T_INT (ulsch->rnti), T_INT (harq_pid));

	MSC_LOG_RX_MESSAGE(
			   MSC_PHY_ENB,MSC_PHY_UE,
			   NULL,0,
			   "%05u:%02u ULSCH received rnti %x harq id %u",
			   frame,subframe,
			   ulsch->rnti,harq_pid
			   );
	
	
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#ifdef DEBUG_PHY_PROC
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#ifdef DEBUG_ULSCH
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	LOG_D(PHY,"[eNB] Frame %d, Subframe %d : ULSCH SDU (RX harq_pid %d) %d bytes:",frame,subframe,
	      harq_pid,ulsch_harq->TBS>>3);
	
	for (j=0; j<ulsch_harq->TBS>>3; j++)
	  LOG_T(PHY,"%x.",ulsch->harq_processes[harq_pid]->b[j]);
	
	LOG_T(PHY,"\n");
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#endif
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#endif
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      }  // ulsch not in error
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      if (ulsch_harq->O_ACK>0) fill_ulsch_harq_indication(eNB,ulsch_harq,ulsch->rnti,frame,subframe,ulsch->bundling);
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      LOG_D(PHY,"[eNB %d] Frame %d subframe %d: received ULSCH harq_pid %d for UE %d, ret = %d, CQI CRC Status %d, ACK %d,%d, ulsch_errors %d/%d\n",
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	    eNB->Mod_id,frame,subframe,
	    harq_pid,
	    i,
	    ret,
	    ulsch_harq->cqi_crc_status,
	    ulsch_harq->o_ACK[0],
	    ulsch_harq->o_ACK[1],
	    eNB->UE_stats[i].ulsch_errors[harq_pid],
	    eNB->UE_stats[i].ulsch_decoding_attempts[harq_pid][0]);
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    } //     if ((ulsch) &&
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    //         (ulsch->rnti>0) &&
    //         (ulsch_harq->status == ACTIVE))
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    else if ((ulsch) &&
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	     (ulsch->rnti>0) &&
	     (ulsch_harq->status == ACTIVE) &&
	     (ulsch_harq->frame == frame) &&
	     (ulsch_harq->subframe == subframe) &&
	     (ulsch_harq->handled == 1)) {
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      // this harq process is stale, kill it, this 1024 frames later (10s), consider reducing that
      ulsch_harq->status = SCH_IDLE;
      ulsch_harq->handled = 0;
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      ulsch->harq_mask &= ~(1 << harq_pid);
      LOG_W (PHY, "Removing stale ULSCH config for UE %x harq_pid %d (harq_mask is now 0x%2.2x)\n", ulsch->rnti, harq_pid, ulsch->harq_mask);
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    }
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  }   //   for (i=0; i<NUMBER_OF_UE_MAX; i++)
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}
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extern int      oai_exit;
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extern void    *td_thread (void *);
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void init_td_thread(PHY_VARS_eNB *eNB) {
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  L1_proc_t *proc = &eNB->proc;
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  proc->tdp.eNB = eNB;
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  proc->instance_cnt_td         = -1;
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  pthread_attr_init( &proc->attr_td);  
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  pthread_mutex_init( &proc->mutex_td, NULL);
  pthread_cond_init( &proc->cond_td, NULL);
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  pthread_create(&proc->pthread_td, &proc->attr_td, td_thread, (void*)&proc->tdp);
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}
void kill_td_thread(PHY_VARS_eNB *eNB) {
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  L1_proc_t *proc = &eNB->proc;
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  proc->instance_cnt_td         = 0;
  pthread_cond_signal(&proc->cond_td);
  
  pthread_join(proc->pthread_td, NULL);
  pthread_mutex_destroy( &proc->mutex_td );
  pthread_cond_destroy( &proc->cond_td );
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}

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extern void    *te_thread (void *);
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void init_te_thread(PHY_VARS_eNB *eNB) {
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  L1_proc_t *proc = &eNB->proc;
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  for(int i=0; i<3 ;i++){
    proc->tep[i].eNB = eNB;
    proc->tep[i].instance_cnt_te         = -1;
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    pthread_mutex_init( &proc->tep[i].mutex_te, NULL);
    pthread_cond_init( &proc->tep[i].cond_te, NULL);
    pthread_attr_init( &proc->tep[i].attr_te);
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    LOG_I(PHY,"Creating te_thread %d\n",i);
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    pthread_create(&proc->tep[i].pthread_te, &proc->tep[i].attr_te, te_thread, (void*)&proc->tep[i]);
  }
}
void kill_te_thread(PHY_VARS_eNB *eNB) {
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  L1_proc_t *proc = &eNB->proc;
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  for(int i=0; i<3 ;i++){
    proc->tep[i].instance_cnt_te         = 0;
    pthread_cond_signal(&proc->tep[i].cond_te);
    pthread_join(proc->tep[i].pthread_te, NULL);
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    pthread_mutex_destroy( &proc->tep[i].mutex_te);
    pthread_cond_destroy( &proc->tep[i].cond_te);
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  }
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}

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void fill_rx_indication(PHY_VARS_eNB *eNB,int UE_id,int frame,int subframe) {
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  nfapi_rx_indication_pdu_t *pdu;
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  int             timing_advance_update;
  int             sync_pos;
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  uint32_t        harq_pid;
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#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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  if (eNB->ulsch[UE_id]->ue_type > 0) harq_pid = 0;
  else
#endif
    {
      harq_pid = subframe2harq_pid (&eNB->frame_parms,
				    frame, subframe);
    }
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  pthread_mutex_lock(&eNB->UL_INFO_mutex);
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  eNB->UL_INFO.rx_ind.sfn_sf                    = frame<<4| subframe;
  eNB->UL_INFO.rx_ind.rx_indication_body.tl.tag = NFAPI_RX_INDICATION_BODY_TAG;
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  pdu                                    = &eNB->UL_INFO.rx_ind.rx_indication_body.rx_pdu_list[eNB->UL_INFO.rx_ind.rx_indication_body.number_of_pdus];
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  //  pdu->rx_ue_information.handle          = eNB->ulsch[UE_id]->handle;
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  pdu->rx_ue_information.tl.tag          = NFAPI_RX_UE_INFORMATION_TAG;
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  pdu->rx_ue_information.rnti            = eNB->ulsch[UE_id]->rnti;
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  pdu->rx_indication_rel8.tl.tag         = NFAPI_RX_INDICATION_REL8_TAG;
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  pdu->rx_indication_rel8.length         = eNB->ulsch[UE_id]->harq_processes[harq_pid]->TBS>>3;
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  pdu->rx_indication_rel8.offset         = 1;   // DJP - I dont understand - but broken unless 1 ????  0;  // filled in at the end of the UL_INFO formation
  pdu->data                              = eNB->ulsch[UE_id]->harq_processes[harq_pid]->b;  
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  // estimate timing advance for MAC
  sync_pos                               = lte_est_timing_advance_pusch(eNB,UE_id);
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  timing_advance_update                  = sync_pos; // - eNB->frame_parms.nb_prefix_samples/4; //to check
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  //  if (timing_advance_update > 10) { dump_ulsch(eNB,frame,subframe,UE_id); exit(-1);}
  //  if (timing_advance_update < -10) { dump_ulsch(eNB,frame,subframe,UE_id); exit(-1);}
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  switch (eNB->frame_parms.N_RB_DL) {
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  case 6:                      /* nothing to do */
    break;
  case 15:
    timing_advance_update /= 2;
    break;
  case 25:
    timing_advance_update /= 4;
    break;
  case 50:
    timing_advance_update /= 8;
    break;
  case 75:
    timing_advance_update /= 12;
    break;
  case 100:
    timing_advance_update /= 16;
    break;
  default:
    abort ();
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  }
  // put timing advance command in 0..63 range
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  timing_advance_update += 31;
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  if (timing_advance_update < 0)
    timing_advance_update = 0;
  if (timing_advance_update > 63)
    timing_advance_update = 63;
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  pdu->rx_indication_rel8.timing_advance = timing_advance_update;
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  // estimate UL_CQI for MAC (from antenna port 0 only)
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  int SNRtimes10 = dB_fixed_times10(eNB->pusch_vars[UE_id]->ulsch_power[0]) - 300;//(10*eNB->measurements.n0_power_dB[0]);
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  if (SNRtimes10 < -640)
    pdu->rx_indication_rel8.ul_cqi = 0;
  else if (SNRtimes10 > 635)
    pdu->rx_indication_rel8.ul_cqi = 255;
  else
    pdu->rx_indication_rel8.ul_cqi = (640 + SNRtimes10) / 5;
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  LOG_D(PHY,"[PUSCH %d] Frame %d Subframe %d Filling RX_indication with SNR %d (%d), timing_advance %d (update %d)\n",
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		  harq_pid,frame,subframe,SNRtimes10,pdu->rx_indication_rel8.ul_cqi,pdu->rx_indication_rel8.timing_advance,
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	timing_advance_update);
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  eNB->UL_INFO.rx_ind.rx_indication_body.number_of_pdus++;
  eNB->UL_INFO.rx_ind.sfn_sf = frame<<4 | subframe;
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  pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}
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//-----------------------------------------------------------------------------
/*
 * Release the harq if its round is >= 'after_rounds'
 */
static void do_release_harq(PHY_VARS_eNB *eNB,
                            int UE_id,
                            int tb,
                            uint16_t frame,
                            uint8_t subframe,
                            uint16_t mask,
                            int after_rounds)
//-----------------------------------------------------------------------------
{
  LTE_eNB_DLSCH_t *dlsch0 = NULL;
  LTE_eNB_DLSCH_t *dlsch1 = NULL;
  LTE_DL_eNB_HARQ_t *dlsch0_harq = NULL;
  LTE_DL_eNB_HARQ_t *dlsch1_harq = NULL;
  int UE_id_mac = -1;
  UE_sched_ctrl *UE_scheduling_control = NULL;
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  int harq_pid;
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  int subframe_tx;
  int frame_tx;

  AssertFatal(UE_id != -1, "No existing dlsch context\n");
  AssertFatal(UE_id < NUMBER_OF_UE_MAX, "Returned UE_id %d >= %d (NUMBER_OF_UE_MAX)\n", UE_id, NUMBER_OF_UE_MAX);

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  dlsch0 = eNB->dlsch[UE_id][0];
  dlsch1 = eNB->dlsch[UE_id][1];
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  UE_id_mac = find_UE_id(eNB->Mod_id, dlsch0->rnti);
  UE_scheduling_control = &(RC.mac[eNB->Mod_id]->UE_list.UE_sched_ctrl[UE_id_mac]);

  if (eNB->frame_parms.frame_type == FDD) {
    subframe_tx = (subframe + 6) % 10;
    frame_tx = ul_ACK_subframe2_dl_frame(&eNB->frame_parms,
                                        frame,
                                        subframe,
                                        subframe_tx);

    harq_pid = dlsch0->harq_ids[frame_tx%2][subframe_tx];

    AssertFatal((harq_pid >= 0) && (harq_pid < 8),"harq_pid %d not in 0...7\n", harq_pid);

    dlsch0_harq = dlsch0->harq_processes[harq_pid];
    dlsch1_harq = dlsch1->harq_processes[harq_pid];
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    AssertFatal(dlsch0_harq != NULL, "dlsch0_harq is null\n");

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#if T_TRACER
    if (after_rounds != -1) {
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      T(T_ENB_PHY_DLSCH_UE_NACK,
        T_INT(0),
        T_INT(frame),
        T_INT(subframe),
        T_INT(dlsch0->rnti),
        T_INT(harq_pid));
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    } else {
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      T(T_ENB_PHY_DLSCH_UE_ACK,
        T_INT(0),
        T_INT(frame),
        T_INT(subframe),
        T_INT(dlsch0->rnti),
        T_INT(harq_pid));
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    }
#endif
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    /*
    LOG_I(PHY, "UE_id = %d; Frame %d, subframe %d: Releasing harq %d for UE %x, CC_id = %d; HARQ RTT Timer = %d,%d,%d,%d,%d,%d,%d,%d, drx-ReTX = %d, cdrx-configured = %d\n",
          UE_id_mac,
          frame,
          subframe,
          harq_pid,
          dlsch0->rnti,
          eNB->CC_id,
          UE_scheduling_control->harq_rtt_timer[eNB->CC_id][0],
          UE_scheduling_control->harq_rtt_timer[eNB->CC_id][1],
          UE_scheduling_control->harq_rtt_timer[eNB->CC_id][2],
          UE_scheduling_control->harq_rtt_timer[eNB->CC_id][3],
          UE_scheduling_control->harq_rtt_timer[eNB->CC_id][4],
          UE_scheduling_control->harq_rtt_timer[eNB->CC_id][5],
          UE_scheduling_control->harq_rtt_timer[eNB->CC_id][6],
          UE_scheduling_control->harq_rtt_timer[eNB->CC_id][7],
          UE_scheduling_control->drx_retransmission_timer[harq_pid],
          UE_scheduling_control->cdrx_configured);
    */

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    if (dlsch0_harq->round >= after_rounds) {
      dlsch0_harq->status = SCH_IDLE;
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      dlsch0->harq_mask &= ~(1 << harq_pid);

      /* CDRX: PUCCH gives an ACK or no more repetitions, so reset corresponding HARQ RTT */
      UE_scheduling_control->harq_rtt_timer[eNB->CC_id][harq_pid] = 0;
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    }
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  } else {
    /* Release all processes in the bundle that was acked, based on mask */
    /* This is at most 4 for multiplexing and 9 for bundling/special bundling */
    int M = ul_ACK_subframe2_M(&eNB->frame_parms, subframe);

    for (int m=0; m < M; m++) {
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      subframe_tx = ul_ACK_subframe2_dl_subframe(&eNB->frame_parms,
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                                                subframe,
                                                m);

      frame_tx = ul_ACK_subframe2_dl_frame(&eNB->frame_parms,
                                          frame,
                                          subframe,
                                          subframe_tx);

      if (((1 << m) & mask) > 0) {
        harq_pid = dlsch0->harq_ids[frame_tx%2][subframe_tx];

        if ((harq_pid >= 0) && (harq_pid < dlsch0->Mdlharq)) {
          dlsch0_harq = dlsch0->harq_processes[harq_pid];
          dlsch1_harq = dlsch1->harq_processes[harq_pid];

          AssertFatal(dlsch0_harq != NULL, "Dlsch0_harq is null\n");

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#if T_TRACER
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          if (after_rounds != -1) {
            T(T_ENB_PHY_DLSCH_UE_NACK,
              T_INT(0),
              T_INT(frame),
              T_INT(subframe),
              T_INT(dlsch0->rnti),
              T_INT(harq_pid));
          } else {
            T(T_ENB_PHY_DLSCH_UE_ACK,
              T_INT(0),
              T_INT(frame),
              T_INT(subframe),
              T_INT(dlsch0->rnti),
              T_INT(harq_pid));
          }
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#endif
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          if (dlsch0_harq->round >= after_rounds) {
            dlsch0_harq->status = SCH_IDLE;

            if ((dlsch1_harq == NULL) || ((dlsch1_harq != NULL) && (dlsch1_harq->status == SCH_IDLE))) {
              dlsch0->harq_mask &= ~(1 << harq_pid);
            }
          }
	      } // end if ((harq_pid >= 0) && (harq_pid < dlsch0->Mdlharq))
      } // end if (((1 << m) & mask) > 0)
    } // end for (int m=0; m < M; m++)
  } // end if TDD
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}
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static void release_harq(PHY_VARS_eNB *eNB,int UE_id,int tb,uint16_t frame,uint8_t subframe,uint16_t mask, int is_ack) {
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  /* Maximum number of DL transmissions = 4.
   * TODO: get the value from configuration.
   * If is_ack is true then we release immediately. The value -1 can be used for that.
   */
  do_release_harq(eNB, UE_id, tb, frame, subframe, mask, is_ack ? -1 : 4);
}
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int getM(PHY_VARS_eNB *eNB,int frame,int subframe) {
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  int M,Mtx=0;
  LTE_eNB_DLSCH_t *dlsch0=NULL,*dlsch1=NULL;
  LTE_DL_eNB_HARQ_t *dlsch0_harq=NULL,*dlsch1_harq=NULL;
  int harq_pid;
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  int subframe_tx,frame_tx;
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  int m;
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  M=ul_ACK_subframe2_M(&eNB->frame_parms,
		       subframe);
  
  for (m=0; m<M; m++) {
    subframe_tx = ul_ACK_subframe2_dl_subframe(&eNB->frame_parms,
					       subframe,
					       m);
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    frame_tx =  ul_ACK_subframe2_dl_frame(&eNB->frame_parms,frame,
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                                          subframe,subframe_tx);
    if (dlsch0 == NULL || dlsch1 == NULL) {
        LOG_E(PHY, "dlsch0 and/or dlsch1 NULL, getM frame %i, subframe %i\n",frame,subframe);
	return Mtx;
    }

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    harq_pid = dlsch0->harq_ids[frame_tx%2][subframe_tx];
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    if (harq_pid>=0 && harq_pid<10) {
      dlsch0_harq     = dlsch0->harq_processes[harq_pid];
      dlsch1_harq     = dlsch1->harq_processes[harq_pid];
      AssertFatal(dlsch0_harq!=NULL,"dlsch0_harq is null\n");
      if (dlsch0_harq->status == ACTIVE||
	  (dlsch1_harq!=NULL && dlsch1_harq->status == ACTIVE)) Mtx ++;
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    }
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  }
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  return (Mtx);
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}
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void fill_ulsch_cqi_indication (PHY_VARS_eNB * eNB, uint16_t frame, uint8_t subframe, LTE_UL_eNB_HARQ_t * ulsch_harq, uint16_t rnti) {
  
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  pthread_mutex_lock (&eNB->UL_INFO_mutex);
  nfapi_cqi_indication_pdu_t *pdu = &eNB->UL_INFO.cqi_ind.cqi_pdu_list[eNB->UL_INFO.cqi_ind.number_of_cqis];
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  nfapi_cqi_indication_raw_pdu_t *raw_pdu = &eNB->UL_INFO.cqi_ind.cqi_raw_pdu_list[eNB->UL_INFO.cqi_ind.number_of_cqis];
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  pdu->rx_ue_information.tl.tag          = NFAPI_RX_UE_INFORMATION_TAG;
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  pdu->rx_ue_information.rnti = rnti;
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  if (ulsch_harq->cqi_crc_status != 1)
    pdu->cqi_indication_rel9.data_offset = 0;
  else
    pdu->cqi_indication_rel9.data_offset = 1;   // fill in after all cqi_indications have been generated when non-zero
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  // by default set O to rank 1 value

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  pdu->cqi_indication_rel9.tl.tag = NFAPI_CQI_INDICATION_REL9_TAG;
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  pdu->cqi_indication_rel9.length = (ulsch_harq->Or1>>3) + ((ulsch_harq->Or1&7) > 0 ? 1 : 0);
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  pdu->cqi_indication_rel9.ri[0]  = 0;
  // if we have RI bits, set them and if rank2 overwrite O
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  if (ulsch_harq->O_RI > 0) {
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    pdu->cqi_indication_rel9.ri[0] = ulsch_harq->o_RI[0];
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    if (ulsch_harq->o_RI[0] == 2)
      pdu->cqi_indication_rel9.length = (ulsch_harq->Or2 >> 3) + ((ulsch_harq->Or2 & 7) > 0 ? 1 : 0);
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    pdu->cqi_indication_rel9.timing_advance = 0;
  }
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  pdu->cqi_indication_rel9.number_of_cc_reported = 1;
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  pdu->ul_cqi_information.channel = 1;  // PUSCH
  memcpy ((void *) raw_pdu->pdu, ulsch_harq->o, pdu->cqi_indication_rel9.length);
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  eNB->UL_INFO.cqi_ind.number_of_cqis++;
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  LOG_D(PHY,"eNB->UL_INFO.cqi_ind.number_of_cqis:%d\n", eNB->UL_INFO.cqi_ind.number_of_cqis);
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  pthread_mutex_unlock(&eNB->UL_INFO_mutex);
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}							
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void fill_ulsch_harq_indication (PHY_VARS_eNB * eNB, LTE_UL_eNB_HARQ_t * ulsch_harq, uint16_t rnti, int frame, int subframe, int bundling) {
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  int UE_id = find_dlsch(rnti,eNB,SEARCH_EXIST);
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  if( (UE_id<0) || (UE_id>=NUMBER_OF_UE_MAX) ){
    LOG_E(PHY,"illegal UE_id found!!! rnti %04x UE_id %d\n",rnti,UE_id);
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    return;
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  }
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  //AssertFatal(UE_id>=0,"UE_id doesn't exist\n");
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  pthread_mutex_lock(&eNB->UL_INFO_mutex);
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  nfapi_harq_indication_pdu_t *pdu =   &eNB->UL_INFO.harq_ind.harq_indication_body.harq_pdu_list[eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs];
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  int M;
  int i;
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  eNB->UL_INFO.harq_ind.header.message_id = NFAPI_HARQ_INDICATION;
  eNB->UL_INFO.harq_ind.sfn_sf = frame<<4|subframe;
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  eNB->UL_INFO.harq_ind.harq_indication_body.tl.tag = NFAPI_HARQ_INDICATION_BODY_TAG;
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  pdu->instance_length                                = 0; // don't know what to do with this
  //  pdu->rx_ue_information.handle                       = handle;
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  pdu->rx_ue_information.tl.tag                       = NFAPI_RX_UE_INFORMATION_TAG;
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  pdu->rx_ue_information.rnti                         = rnti;
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  if (eNB->frame_parms.frame_type == FDD) {
    pdu->harq_indication_fdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_FDD_REL13_TAG;
    pdu->harq_indication_fdd_rel13.mode = 0;
    pdu->harq_indication_fdd_rel13.number_of_ack_nack = ulsch_harq->O_ACK;
    
    for (i = 0; i < ulsch_harq->O_ACK; i++) {
      AssertFatal (ulsch_harq->o_ACK[i] == 0 || ulsch_harq->o_ACK[i] == 1, "harq_ack[%d] is %d, should be 1,2 or 4\n", i, ulsch_harq->o_ACK[i]);
      
      pdu->harq_indication_fdd_rel13.harq_tb_n[i] = 2 - ulsch_harq->o_ACK[i];
      // release DLSCH if needed
      
      release_harq(eNB,UE_id,i,frame,subframe,0xffff, ulsch_harq->o_ACK[i] == 1);
      
    }
  } else {                      // TDD
    M = ul_ACK_subframe2_M (&eNB->frame_parms, subframe);
    
    pdu->harq_indication_tdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
    pdu->harq_indication_tdd_rel13.mode = 1-bundling;
    pdu->harq_indication_tdd_rel13.number_of_ack_nack = ulsch_harq->O_ACK;
    
    for (i = 0; i < ulsch_harq->O_ACK; i++) {
      AssertFatal (ulsch_harq->o_ACK[i] == 0 || ulsch_harq->o_ACK[i] == 1, "harq_ack[%d] is %d, should be 1,2 or 4\n", i, ulsch_harq->o_ACK[i]);
      
      pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 2-ulsch_harq->o_ACK[i];
      // release DLSCH if needed
      /* TODO: review this code, it's most certainly wrong.
       * We have to release the proper HARQ in case of ACK or NACK if max retransmission reached.
       * Basically, call release_harq with 1 as last argument when ACK and 0 when NACK.
       */
      release_harq(eNB,UE_id,i,frame,subframe,0xffff, ulsch_harq->o_ACK[i] == 1);
      if      (M==1 && ulsch_harq->O_ACK==1 && ulsch_harq->o_ACK[i] == 1) release_harq(eNB,UE_id,0,frame,subframe,0xffff, ulsch_harq->o_ACK[i] == 1);
      else if (M==1 && ulsch_harq->O_ACK==2 && ulsch_harq->o_ACK[i] == 1) release_harq(eNB,UE_id,i,frame,subframe,0xffff, ulsch_harq->o_ACK[i] == 1);
      else if (M>1 && ulsch_harq->o_ACK[i] == 1) {
	// spatial bundling
	release_harq(eNB,UE_id,0,frame,subframe,1<<i, ulsch_harq->o_ACK[i] == 1);
	release_harq(eNB,UE_id,1,frame,subframe,1<<i, ulsch_harq->o_ACK[i] == 1);
      }
    }
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  }

  //LOG_E(PHY,"eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs:%d\n", eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs);
  eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs++;
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  pthread_mutex_unlock(&eNB->UL_INFO_mutex);
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}
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void fill_uci_harq_indication (PHY_VARS_eNB * eNB, LTE_eNB_UCI * uci, int frame, int subframe, uint8_t * harq_ack, uint8_t tdd_mapping_mode, uint16_t tdd_multiplexing_mask) {
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  int UE_id=find_dlsch(uci->rnti,eNB,SEARCH_EXIST);
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  //AssertFatal(UE_id>=0,"UE_id doesn't exist rnti:%x\n", uci->rnti);
  if (UE_id < 0) {
    LOG_E(PHY,"SFN/SF:%04d%d Unable to find rnti:%x do not send HARQ\n", frame, subframe, uci->rnti);
    return;
  }
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  pthread_mutex_lock(&eNB->UL_INFO_mutex);
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  nfapi_harq_indication_t *ind       = &eNB->UL_INFO.harq_ind;
  nfapi_harq_indication_body_t *body = &ind->harq_indication_body;
  nfapi_harq_indication_pdu_t *pdu   = &body->harq_pdu_list[eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs];
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  ind->sfn_sf = frame<<4|subframe;
  ind->header.message_id = NFAPI_HARQ_INDICATION;
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  body->tl.tag = NFAPI_HARQ_INDICATION_BODY_TAG;
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  pdu->instance_length                                = 0; // don't know what to do with this
  //  pdu->rx_ue_information.handle                       = handle;
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  pdu->rx_ue_information.tl.tag                       = NFAPI_RX_UE_INFORMATION_TAG;
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  pdu->rx_ue_information.rnti                         = uci->rnti;
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  // estimate UL_CQI for MAC (from antenna port 0 only)
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  pdu->ul_cqi_information.tl.tag = NFAPI_UL_CQI_INFORMATION_TAG;
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  int SNRtimes10 = dB_fixed_times10(uci->stat) - 300;//(10*eNB->measurements.n0_power_dB[0]);
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  if (SNRtimes10 < -100)
    LOG_I (PHY, "uci->stat %d \n", uci->stat);
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  if (SNRtimes10 < -640)
    pdu->ul_cqi_information.ul_cqi = 0;
  else if (SNRtimes10 > 635)
    pdu->ul_cqi_information.ul_cqi = 255;
  else
    pdu->ul_cqi_information.ul_cqi = (640 + SNRtimes10) / 5;
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  pdu->ul_cqi_information.channel = 0;
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  if (eNB->frame_parms.frame_type == FDD) {
    if (uci->pucch_fmt == pucch_format1a) {
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      pdu->harq_indication_fdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_FDD_REL13_TAG;
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      pdu->harq_indication_fdd_rel13.mode = 0;  
      pdu->harq_indication_fdd_rel13.number_of_ack_nack = 1;
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      AssertFatal (harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[0] == 4, "harq_ack[0] is %d, should be 1,2 or 4\n", harq_ack[0]);
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      pdu->harq_indication_fdd_rel13.harq_tb_n[0] = harq_ack[0];
      // release DLSCH if needed
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      release_harq(eNB,UE_id,0,frame,subframe,0xffff, harq_ack[0] == 1);
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    }
    else if (uci->pucch_fmt == pucch_format1b) {
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      pdu->harq_indication_fdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_FDD_REL13_TAG;
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      pdu->harq_indication_fdd_rel13.mode = 0;  
      pdu->harq_indication_fdd_rel13.number_of_ack_nack = 2;
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      AssertFatal (harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[1] == 4, "harq_ack[0] is %d, should be 0,1 or 4\n", harq_ack[0]);
      AssertFatal (harq_ack[1] == 1 || harq_ack[1] == 2 || harq_ack[1] == 4, "harq_ack[1] is %d, should be 0,1 or 4\n", harq_ack[1]);
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      pdu->harq_indication_fdd_rel13.harq_tb_n[0] = harq_ack[0];
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      pdu->harq_indication_fdd_rel13.harq_tb_n[1] = harq_ack[1];
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      // release DLSCH if needed
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      release_harq(eNB,UE_id,0,frame,subframe,0xffff, harq_ack[0] == 1);
      release_harq(eNB,UE_id,1,frame,subframe,0xffff, harq_ack[1] == 1);
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    }
    else AssertFatal(1==0,"only format 1a/b for now, received %d\n",uci->pucch_fmt); 
  }
  else { // TDD
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    AssertFatal (tdd_mapping_mode == 0 || tdd_mapping_mode == 1 || tdd_mapping_mode == 2, "Illegal tdd_mapping_mode %d\n", tdd_mapping_mode);
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    pdu->harq_indication_tdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
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    pdu->harq_indication_tdd_rel13.mode = tdd_mapping_mode;  
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    LOG_D(PHY,"%s(eNB, uci_harq format %d, rnti:%04x, frame:%d, subframe:%d, tdd_mapping_mode:%d) harq_ack[0]:%d harq_ack[1]:%d\n", __FUNCTION__, uci->pucch_fmt,uci->rnti, frame, subframe, tdd_mapping_mode,harq_ack[0],harq_ack[1]);
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    switch (tdd_mapping_mode) {
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    case 0:                    // bundling
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      if (uci->pucch_fmt == pucch_format1a) {
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	pdu->harq_indication_tdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
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	pdu->harq_indication_tdd_rel13.number_of_ack_nack = 1;	
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	LOG_D(PHY,"bundling, pucch1a, number of ack nack %d\n",pdu->harq_indication_tdd_rel13.number_of_ack_nack);
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	AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[0] == 4, "harq_ack[0] is %d, should be 1,2 or 4\n",harq_ack[0]);
	pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = harq_ack[0];
	// release all bundled DLSCH if needed
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	release_harq(eNB,UE_id,0,frame,subframe,0xffff, harq_ack[0] == 1);
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      }
      else if (uci->pucch_fmt == pucch_format1b) {
	pdu->harq_indication_tdd_rel13.number_of_ack_nack = 2;
	AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[1] == 4, "harq_ack[0] is %d, should be 0,1 or 4\n",harq_ack[0]);
	AssertFatal(harq_ack[1] == 1 || harq_ack[1] == 2 || harq_ack[1] == 4, "harq_ack[1] is %d, should be 0,1 or 4\n",harq_ack[1]);
2007
	pdu->harq_indication_tdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
2008 2009 2010
	pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = harq_ack[0];
	pdu->harq_indication_tdd_rel13.harq_data[1].bundling.value_0 = harq_ack[1]; 
	// release all DLSCH if needed
2011 2012
	release_harq(eNB,UE_id,0,frame,subframe,0xffff, harq_ack[0] == 1);
	release_harq(eNB,UE_id,1,frame,subframe,0xffff, harq_ack[1] == 1);
2013 2014
      }
      break;
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2015 2016
    case 1:                    // multiplexing
      AssertFatal (uci->pucch_fmt == pucch_format1b, "uci->pucch_format %d is not format1b\n", uci->pucch_fmt);
2017
      
2018
      if (uci->num_pucch_resources == 1 && uci->pucch_fmt == pucch_format1a) {
2019
	pdu->harq_indication_tdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
2020 2021 2022 2023
	pdu->harq_indication_tdd_rel13.number_of_ack_nack = 1;	
	AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[0] == 4, "harq_ack[0] is %d, should be 1,2 or 4\n",harq_ack[0]);
	pdu->harq_indication_tdd_rel13.harq_data[0].multiplex.value_0 = harq_ack[0];
	// release all DLSCH if needed
2024
	release_harq(eNB,UE_id,0,frame,subframe,0xffff, harq_ack[0] == 1);
2025
      }
2026
      else if (uci->num_pucch_resources == 1 && uci->pucch_fmt == pucch_format1b) {
2027
	pdu->harq_indication_tdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
2028 2029 2030 2031 2032 2033
	pdu->harq_indication_tdd_rel13.number_of_ack_nack = 2;
	AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[1] == 4, "harq_ack[0] is %d, should be 0,1 or 4\n",harq_ack[0]);
	AssertFatal(harq_ack[1] == 1 || harq_ack[1] == 2 || harq_ack[1] == 4, "harq_ack[1] is %d, should be 0,1 or 4\n",harq_ack[1]);
	pdu->harq_indication_tdd_rel13.harq_data[0].multiplex.value_0 = harq_ack[0];
	pdu->harq_indication_tdd_rel13.harq_data[1].multiplex.value_0 = harq_ack[1]; 
	// release all DLSCH if needed
2034 2035
	release_harq(eNB,UE_id,0,frame,subframe,0xffff, harq_ack[0] == 1);
	release_harq(eNB,UE_id,1,frame,subframe,0xffff, harq_ack[1] == 1);
2036 2037
      }
      else { // num_pucch_resources (M) > 1
2038
	pdu->harq_indication_tdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
2039
	pdu->harq_indication_tdd_rel13.number_of_ack_nack = uci->num_pucch_resources;
2040
	
2041 2042 2043 2044 2045
	pdu->harq_indication_tdd_rel13.harq_data[0].multiplex.value_0 = harq_ack[0];
	pdu->harq_indication_tdd_rel13.harq_data[1].multiplex.value_0 = harq_ack[1];
	if (uci->num_pucch_resources == 3) 	pdu->harq_indication_tdd_rel13.harq_data[2].multiplex.value_0 = harq_ack[2];
	if (uci->num_pucch_resources == 4) 	pdu->harq_indication_tdd_rel13.harq_data[3].multiplex.value_0 = harq_ack[3];
	// spatial-bundling in this case so release both HARQ if necessary
2046 2047
	release_harq(eNB,UE_id,0,frame,subframe,tdd_multiplexing_mask, 1 /* force release? previous code was unconditional */);
	release_harq(eNB,UE_id,1,frame,subframe,tdd_multiplexing_mask, 1 /* force release? previous code was unconditional */);
2048 2049 2050
      }
      break;
    case 2: // special bundling (SR collision)
2051
      pdu->harq_indication_tdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
2052
      pdu->harq_indication_tdd_rel13.number_of_ack_nack = 1;
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2053
      pdu->harq_indication_tdd_rel13.mode = 0;
2054 2055
      int tdd_config5_sf2scheds=0;
      if (eNB->frame_parms.tdd_config==5) tdd_config5_sf2scheds = getM(eNB,frame,subframe);
2056
      
2057 2058
      switch (harq_ack[0]) {
      case 0:
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2059
      case 4:
2060 2061
	pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 0;
	/* TODO: release_harq here? this whole code looks suspicious */
2062 2063 2064 2065
	break;
      case 1: // check if M=1,4,7
	if (uci->num_pucch_resources == 1 || uci->num_pucch_resources == 4 ||
	    tdd_config5_sf2scheds == 1 || tdd_config5_sf2scheds == 4 || tdd_config5_sf2scheds == 7) {
2066
	  pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 1;
2067 2068
	  release_harq(eNB,UE_id,0,frame,subframe,0xffff, 1);
	  release_harq(eNB,UE_id,1,frame,subframe,0xffff, 1);
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2069
	}else{
2070
	  pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 0;
2071
	}
2072 2073 2074 2075
	break;
      case 2: // check if M=2,5,8
	if (uci->num_pucch_resources == 2 || tdd_config5_sf2scheds == 2 || 
	    tdd_config5_sf2scheds == 5 || tdd_config5_sf2scheds == 8) {
2076
	  pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 1;
2077 2078
	  release_harq(eNB,UE_id,0,frame,subframe,0xffff, 1);
	  release_harq(eNB,UE_id,1,frame,subframe,0xffff, 1);
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2079
	}else{
2080
	  pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 0;
2081 2082 2083 2084 2085
	}
	break;
      case 3: // check if M=3,6,9
	if (uci->num_pucch_resources == 3 || tdd_config5_sf2scheds == 3 || 
	    tdd_config5_sf2scheds == 6 || tdd_config5_sf2scheds == 9) {
2086
	  pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 1;
2087 2088
	  release_harq(eNB,UE_id,0,frame,subframe,0xffff, 1);
	  release_harq(eNB,UE_id,1,frame,subframe,0xffff, 1);
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2089
	}else{
2090
	  pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 0;
2091 2092 2093 2094
	}
	break;
      }
      break;
2095
      
2096
    }
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2097
  }                             //TDD
2098 2099
  
  
2100 2101
  eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs++;
  LOG_D(PHY,"Incremented eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs:%d\n", eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs);
2102 2103
  pthread_mutex_unlock(&eNB->UL_INFO_mutex);  
}
2104

2105
void fill_crc_indication (PHY_VARS_eNB * eNB, int UE_id, int frame, int subframe, uint8_t crc_flag) {
2106

2107
  pthread_mutex_lock(&eNB->UL_INFO_mutex);
2108
  nfapi_crc_indication_pdu_t *pdu =   &eNB->UL_INFO.crc_ind.crc_indication_body.crc_pdu_list[eNB->UL_INFO.crc_ind.crc_indication_body.number_of_crcs];
2109
  
2110 2111 2112
  eNB->UL_INFO.crc_ind.sfn_sf                         = frame<<4 | subframe;
  eNB->UL_INFO.crc_ind.header.message_id              = NFAPI_CRC_INDICATION;
  eNB->UL_INFO.crc_ind.crc_indication_body.tl.tag     = NFAPI_CRC_INDICATION_BODY_TAG;
2113

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2114
  pdu->instance_length = 0;     // don't know what to do with this
2115
  //  pdu->rx_ue_information.handle                       = handle;
2116

2117
  pdu->rx_ue_information.tl.tag                       = NFAPI_RX_UE_INFORMATION_TAG;
2118
  pdu->rx_ue_information.rnti                         = eNB->ulsch[UE_id]->rnti;
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2119
  pdu->crc_indication_rel8.tl.tag                     = NFAPI_CRC_INDICATION_REL8_TAG;
2120
  pdu->crc_indication_rel8.crc_flag                   = crc_flag;
2121
  
2122
  eNB->UL_INFO.crc_ind.crc_indication_body.number_of_crcs++;
2123
  
2124
  //LOG_D(PHY, "%s() rnti:%04x crcs:%d crc_flag:%d\n", __FUNCTION__, pdu->rx_ue_information.rnti, eNB->UL_INFO.crc_ind.crc_indication_body.number_of_crcs, crc_flag);
2125
  
2126 2127
  pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}
2128

2129
void phy_procedures_eNB_uespec_RX(PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc)
2130 2131
{
  //RX processing for ue-specific resources (i
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2132 2133 2134
  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
  const int       subframe = proc->subframe_rx;
  const int       frame = proc->frame_rx;
2135
  
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2136
  /* TODO: use correct rxdata */
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2137 2138
  T (T_ENB_PHY_INPUT_SIGNAL, T_INT (eNB->Mod_id), T_INT (frame), T_INT (subframe), T_INT (0),
     T_BUFFER (&eNB->RU_list[0]->common.rxdata[0][subframe * eNB->frame_parms.samples_per_tti], eNB->frame_parms.samples_per_tti * 4));
2139
  
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2140
  if ((fp->frame_type == TDD) && (subframe_select(fp,subframe)!=SF_UL)) return;
2141
  
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2142
  T(T_ENB_PHY_UL_TICK, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe));
2143
  
2144
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_RX_UESPEC, 1 );
2145

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2146
  LOG_D (PHY, "[eNB %d] Frame %d: Doing phy_procedures_eNB_uespec_RX(%d)\n", eNB->Mod_id, frame, subframe);
2147
  
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2148 2149 2150 2151
  eNB->rb_mask_ul[0] = 0;
  eNB->rb_mask_ul[1] = 0;
  eNB->rb_mask_ul[2] = 0;
  eNB->rb_mask_ul[3] = 0;
2152
  
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2153
  // Fix me here, these should be locked
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2154 2155
  eNB->UL_INFO.rx_ind.rx_indication_body.number_of_pdus  = 0;
  eNB->UL_INFO.crc_ind.crc_indication_body.number_of_crcs = 0;
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2156
  // Call SRS first since all others depend on presence of SRS or lack thereof
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2157
  srs_procedures (eNB, proc);
2158
  
2159
  eNB->first_run_I0_measurements = 0;
2160
  
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2161
  uci_procedures (eNB, proc);
2162
  
2163 2164 2165
  if (nfapi_mode == 0 || nfapi_mode == 1) { // If PNF or monolithic
    pusch_procedures(eNB,proc);
  }
2166

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2167
  lte_eNB_I0_measurements (eNB, subframe, 0, eNB->first_run_I0_measurements);
2168

2169
  int min_I0=1000,max_I0=0;
2170
  if ((frame==0) && (subframe==4)) { 
2171 2172
    for (int i=0;i<eNB->frame_parms.N_RB_UL;i++) {
      if (i==(eNB->frame_parms.N_RB_UL>>1) - 1) i+=2;
2173
      
2174 2175
      if (eNB->measurements.n0_subband_power_tot_dB[i]<min_I0) min_I0 = eNB->measurements.n0_subband_power_tot_dB[i];
      if (eNB->measurements.n0_subband_power_tot_dB[i]>max_I0) max_I0 = eNB->measurements.n0_subband_power_tot_dB[i];
2176
      
2177
    }
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2178
    LOG_I (PHY, "max_I0 %d, min_I0 %d\n", max_I0, min_I0);
2179
  }
2180
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_RX_UESPEC, 0 );
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2181
}