phy_procedures_lte_eNb.c 114 KB
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/*******************************************************************************
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    OpenAirInterface
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    Copyright(c) 1999 - 2014 Eurecom
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    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
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    OpenAirInterface is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License
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    along with OpenAirInterface.The full GNU General Public License is
   included in this distribution in the file called "COPYING". If not,
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   see <http://www.gnu.org/licenses/>.
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  Contact Information
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  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
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  OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr
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  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
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 *******************************************************************************/
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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
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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
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 * \note
 * \warning
 */

#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
#include "SCHED/extern.h"

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#include "PHY/LTE_TRANSPORT/if4_tools.h"

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#ifdef EMOS
#include "SCHED/phy_procedures_emos.h"
#endif

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//#define DEBUG_PHY_PROC (Already defined in cmake)
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//#define DEBUG_ULSCH

#include "LAYER2/MAC/extern.h"
#include "LAYER2/MAC/defs.h"
#include "UTIL/LOG/log.h"
#include "UTIL/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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//#define DIAG_PHY

#define NS_PER_SLOT 500000

#define PUCCH 1

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void exit_fun(const char* s);

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extern int exit_openair;

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// Fix per CC openair rf/if device update
// extern openair0_device openair0;
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unsigned char dlsch_input_buffer[2700] __attribute__ ((aligned(32)));
int eNB_sync_buffer0[640*6] __attribute__ ((aligned(32)));
int eNB_sync_buffer1[640*6] __attribute__ ((aligned(32)));
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int *eNB_sync_buffer[2] = {eNB_sync_buffer0, eNB_sync_buffer1};

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extern uint16_t hundred_times_log10_NPRB[100];
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unsigned int max_peak_val;
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int max_sync_pos;
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//DCI_ALLOC_t dci_alloc[8];

#ifdef EMOS
fifo_dump_emos_eNB emos_dump_eNB;
#endif

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#if defined(SMBV) 
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extern const char smbv_fname[];
extern unsigned short config_frames[4];
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extern uint8_t smbv_frame_cnt;
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#endif

#ifdef DIAG_PHY
extern int rx_sig_fifo;
#endif

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uint8_t is_SR_subframe(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,uint8_t UE_id)
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{
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  const int subframe = proc->subframe_rx;
  const int frame = proc->frame_rx;
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  LOG_D(PHY,"[eNB %d][SR %x] Frame %d subframe %d Checking for SR TXOp(sr_ConfigIndex %d)\n",
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        eNB->Mod_id,eNB->ulsch[UE_id]->rnti,frame,subframe,
        eNB->scheduling_request_config[UE_id].sr_ConfigIndex);
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  if (eNB->scheduling_request_config[UE_id].sr_ConfigIndex <= 4) {        // 5 ms SR period
    if ((subframe%5) == eNB->scheduling_request_config[UE_id].sr_ConfigIndex)
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      return(1);
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  } else if (eNB->scheduling_request_config[UE_id].sr_ConfigIndex <= 14) { // 10 ms SR period
    if (subframe==(eNB->scheduling_request_config[UE_id].sr_ConfigIndex-5))
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      return(1);
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  } else if (eNB->scheduling_request_config[UE_id].sr_ConfigIndex <= 34) { // 20 ms SR period
    if ((10*(frame&1)+subframe) == (eNB->scheduling_request_config[UE_id].sr_ConfigIndex-15))
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      return(1);
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  } else if (eNB->scheduling_request_config[UE_id].sr_ConfigIndex <= 74) { // 40 ms SR period
    if ((10*(frame&3)+subframe) == (eNB->scheduling_request_config[UE_id].sr_ConfigIndex-35))
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      return(1);
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  } else if (eNB->scheduling_request_config[UE_id].sr_ConfigIndex <= 154) { // 80 ms SR period
    if ((10*(frame&7)+subframe) == (eNB->scheduling_request_config[UE_id].sr_ConfigIndex-75))
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      return(1);
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  }

  return(0);
}
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void put_harq_pid_in_freelist(LTE_eNB_DLSCH_t *DLSCH_ptr, int harq_pid)
{
  DLSCH_ptr->harq_pid_freelist[DLSCH_ptr->tail_freelist] = harq_pid;
  DLSCH_ptr->tail_freelist = (DLSCH_ptr->tail_freelist + 1) % 10;
}

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void remove_harq_pid_from_freelist(LTE_eNB_DLSCH_t *DLSCH_ptr, int harq_pid)
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{
  if (DLSCH_ptr->head_freelist == DLSCH_ptr->tail_freelist) {
    LOG_E(PHY, "%s:%d: you cannot read this!\n", __FILE__, __LINE__);
    abort();
  }
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  /* basic check, in case several threads deal with the free list at the same time
   * in normal situations it should not happen, that's also why we don't use any
   * locking mechanism to protect the free list
   * to be refined in case things don't work properly
   */
  if (harq_pid != DLSCH_ptr->harq_pid_freelist[DLSCH_ptr->head_freelist]) {
    LOG_E(PHY, "%s:%d: critical error, get in touch with the authors\n", __FILE__, __LINE__);
    abort();
  }
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  DLSCH_ptr->head_freelist = (DLSCH_ptr->head_freelist + 1) % 10;
}

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int32_t add_ue(int16_t rnti, PHY_VARS_eNB *eNB)
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{
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  uint8_t i;
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  LOG_D(PHY,"[eNB %d/%d] Adding UE with rnti %x\n",
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        eNB->Mod_id,
        eNB->CC_id,
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        (uint16_t)rnti);
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  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
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    if ((eNB->dlsch[i]==NULL) || (eNB->ulsch[i]==NULL)) {
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      MSC_LOG_EVENT(MSC_PHY_ENB, "0 Failed add ue %"PRIx16" (ENOMEM)", rnti);
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      LOG_E(PHY,"Can't add UE, not enough memory allocated\n");
      return(-1);
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    } else {
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      if (eNB->UE_stats[i].crnti==0) {
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        MSC_LOG_EVENT(MSC_PHY_ENB, "0 Add ue %"PRIx16" ", rnti);
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        LOG_D(PHY,"UE_id %d associated with rnti %x\n",i, (uint16_t)rnti);
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        eNB->dlsch[i][0]->rnti = rnti;
        eNB->ulsch[i]->rnti = rnti;
        eNB->UE_stats[i].crnti = rnti;
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	eNB->UE_stats[i].Po_PUCCH1_below = 0;
	eNB->UE_stats[i].Po_PUCCH1_above = (int32_t)pow(10.0,.1*(eNB->frame_parms.ul_power_control_config_common.p0_NominalPUCCH+eNB->rx_total_gain_dB));
	eNB->UE_stats[i].Po_PUCCH        = (int32_t)pow(10.0,.1*(eNB->frame_parms.ul_power_control_config_common.p0_NominalPUCCH+eNB->rx_total_gain_dB));
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	LOG_D(PHY,"Initializing Po_PUCCH: p0_NominalPUCCH %d, gain %d => %d\n",
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	      eNB->frame_parms.ul_power_control_config_common.p0_NominalPUCCH,
	      eNB->rx_total_gain_dB,
	      eNB->UE_stats[i].Po_PUCCH);
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        return(i);
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      }
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    }
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  }
  return(-1);
}

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int mac_phy_remove_ue(module_id_t Mod_idP,rnti_t rntiP) {
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  uint8_t i;
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  int j,CC_id;
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  PHY_VARS_eNB *eNB;
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  for (CC_id=0;CC_id<MAX_NUM_CCs;CC_id++) {
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    eNB = PHY_vars_eNB_g[Mod_idP][CC_id];
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    for (i=0; i<NUMBER_OF_UE_MAX; i++) {
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      if ((eNB->dlsch[i]==NULL) || (eNB->ulsch[i]==NULL)) {
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	MSC_LOG_EVENT(MSC_PHY_ENB, "0 Failed remove ue %"PRIx16" (ENOMEM)", rnti);
	LOG_E(PHY,"Can't remove UE, not enough memory allocated\n");
	return(-1);
      } else {
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	if (eNB->UE_stats[i].crnti==rntiP) {
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	  MSC_LOG_EVENT(MSC_PHY_ENB, "0 Removed ue %"PRIx16" ", rntiP);
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	  LOG_D(PHY,"eNB %d removing UE %d with rnti %x\n",eNB->Mod_id,i,rntiP);

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	  //LOG_D(PHY,("[PHY] UE_id %d\n",i);
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	  clean_eNb_dlsch(eNB->dlsch[i][0]);
	  clean_eNb_ulsch(eNB->ulsch[i]);
	  //eNB->UE_stats[i].crnti = 0;
	  memset(&eNB->UE_stats[i],0,sizeof(LTE_eNB_UE_stats));
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	  //  mac_exit_wrapper("Removing UE");
	  
	  /* clear the harq pid freelist */
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	  eNB->dlsch[i][0]->head_freelist = 0;
	  eNB->dlsch[i][0]->tail_freelist = 0;
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	  for (j = 0; j < 8; j++)
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	    put_harq_pid_in_freelist(eNB->dlsch[i][0], j);
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	  return(i);
	}
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      }
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    }
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  }
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  MSC_LOG_EVENT(MSC_PHY_ENB, "0 Failed remove ue %"PRIx16" (not found)", rntiP);
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  return(-1);
}

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int8_t find_next_ue_index(PHY_VARS_eNB *eNB)
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{
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  uint8_t i;
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  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
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    if (eNB->UE_stats[i].crnti==0) {
      /*if ((eNB->dlsch[i]) &&
      (eNB->dlsch[i][0]) &&
      (eNB->dlsch[i][0]->rnti==0))*/
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      LOG_D(PHY,"Next free UE id is %d\n",i);
      return(i);
    }
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  }
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  return(-1);
}

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int get_ue_active_harq_pid(const uint8_t Mod_id,const uint8_t CC_id,const uint16_t rnti, const int frame, const uint8_t subframe,uint8_t *harq_pid,uint8_t *round,const uint8_t ul_flag)
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{
  LTE_eNB_DLSCH_t *DLSCH_ptr;
  LTE_eNB_ULSCH_t *ULSCH_ptr;
  uint8_t ulsch_subframe,ulsch_frame;
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  uint8_t i;
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  int8_t UE_id = find_ue(rnti,PHY_vars_eNB_g[Mod_id][CC_id]);
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  int sf1=(10*frame)+subframe,sf2,sfdiff,sfdiff_max=7;
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  if (UE_id==-1) {
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    LOG_D(PHY,"Cannot find UE with rnti %x (Mod_id %d, CC_id %d)\n",rnti, Mod_id, CC_id);
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    *round=0;
    return(-1);
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  }

  if (ul_flag == 0)  {// this is a DL request
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    DLSCH_ptr = PHY_vars_eNB_g[Mod_id][CC_id]->dlsch[(uint32_t)UE_id][0];
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    // set to no available process first
    *harq_pid = -1;

    for (i=0; i<DLSCH_ptr->Mdlharq; i++) {
      if (DLSCH_ptr->harq_processes[i]!=NULL) {
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	if (DLSCH_ptr->harq_processes[i]->status == ACTIVE) {
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	  sf2 = (DLSCH_ptr->harq_processes[i]->frame*10) + DLSCH_ptr->harq_processes[i]->subframe;
	  if (sf2<=sf1)
	    sfdiff = sf1-sf2;
	  else // this happens when wrapping around 1024 frame barrier
	    sfdiff = 10240 + sf1-sf2;
	  LOG_D(PHY,"process %d is active, round %d (waiting %d)\n",i,DLSCH_ptr->harq_processes[i]->round,sfdiff);

	  if (sfdiff>sfdiff_max) { // this is an active process that is waiting longer than the others (and longer than 7 ms)
	    sfdiff_max = sfdiff; 
	    *harq_pid = i;
	    *round = DLSCH_ptr->harq_processes[i]->round;
	  }
	}
      } else { // a process is not defined
	LOG_E(PHY,"[eNB %d] DLSCH process %d for rnti %x (UE_id %d) not allocated\n",Mod_id,i,rnti,UE_id);
	return(-1);
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      }
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    }
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    /* if no active harq pid, get the oldest in the freelist, if any */
    if (*harq_pid == 255 && DLSCH_ptr->head_freelist != DLSCH_ptr->tail_freelist) {
      *harq_pid = DLSCH_ptr->harq_pid_freelist[DLSCH_ptr->head_freelist];
      *round = 0;
      LOG_D(PHY,"process %d is first free process\n", *harq_pid);
    }

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    LOG_D(PHY,"get_ue_active_harq_pid DL => Frame %d, Subframe %d : harq_pid %d\n",
	  frame,subframe,*harq_pid);
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  } else { // This is a UL request
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    ULSCH_ptr = PHY_vars_eNB_g[Mod_id][CC_id]->ulsch[(uint32_t)UE_id];
    ulsch_subframe = pdcch_alloc2ul_subframe(&PHY_vars_eNB_g[Mod_id][CC_id]->frame_parms,subframe);
    ulsch_frame    = pdcch_alloc2ul_frame(&PHY_vars_eNB_g[Mod_id][CC_id]->frame_parms,frame,subframe);
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    // Note this is for TDD configuration 3,4,5 only
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    *harq_pid = subframe2harq_pid(&PHY_vars_eNB_g[Mod_id][CC_id]->frame_parms,
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                                  ulsch_frame,
                                  ulsch_subframe);
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    *round    = ULSCH_ptr->harq_processes[*harq_pid]->round;
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    LOG_T(PHY,"[eNB %d][PUSCH %d] Frame %d subframe %d Checking HARQ, round %d\n",Mod_id,*harq_pid,frame,subframe,*round);
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  }
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  return(0);
}

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int16_t get_target_pusch_rx_power(const module_id_t module_idP, const uint8_t CC_id)
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{
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  return PHY_vars_eNB_g[module_idP][CC_id]->frame_parms.ul_power_control_config_common.p0_NominalPUSCH;
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}

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int16_t get_target_pucch_rx_power(const module_id_t module_idP, const uint8_t CC_id)
{
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  return PHY_vars_eNB_g[module_idP][CC_id]->frame_parms.ul_power_control_config_common.p0_NominalPUCCH;
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}

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#ifdef EMOS
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void phy_procedures_emos_eNB_TX(unsigned char subframe, PHY_VARS_eNB *eNB)
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{
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}
#endif



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void phy_procedures_eNB_S_RX(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,uint8_t abstraction_flag,relaying_type_t r_type)
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{
  UNUSED(r_type);
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  int subframe = proc->subframe_rx;
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#ifdef DEBUG_PHY_PROC
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  LOG_D(PHY,"[eNB %d] Frame %d: Doing phy_procedures_eNB_S_RX(%d)\n", eNB->Mod_id,proc->frame_rx, subframe);
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#endif
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  if (abstraction_flag == 0) {
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    lte_eNB_I0_measurements(eNB,
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			    subframe,
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                            0,
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                            eNB->first_run_I0_measurements);
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  }
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#ifdef PHY_ABSTRACTION
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  else {
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    lte_eNB_I0_measurements_emul(eNB,
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                                 0);
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  }
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#endif

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}

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#ifdef EMOS
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void phy_procedures_emos_eNB_RX(unsigned char subframe,PHY_VARS_eNB *eNB)
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{

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  uint8_t aa;
  uint16_t last_subframe_emos;
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  uint16_t pilot_pos1 = 3 - eNB->frame_parms.Ncp, pilot_pos2 = 10 - 2*eNB->frame_parms.Ncp;
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  uint32_t bytes;
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  last_subframe_emos=0;

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#ifdef EMOS_CHANNEL
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  //if (last_slot%2==1) // this is for all UL subframes
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  if (subframe==3)
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    for (aa=0; aa<eNB->frame_parms.nb_antennas_rx; aa++) {
      memcpy(&emos_dump_eNB.channel[aa][last_subframe_emos*2*eNB->frame_parms.N_RB_UL*12],
             &eNB->pusch_vars[0]->drs_ch_estimates[0][aa][eNB->frame_parms.N_RB_UL*12*pilot_pos1],
             eNB->frame_parms.N_RB_UL*12*sizeof(int));
      memcpy(&emos_dump_eNB.channel[aa][(last_subframe_emos*2+1)*eNB->frame_parms.N_RB_UL*12],
             &eNB->pusch_vars[0]->drs_ch_estimates[0][aa][eNB->frame_parms.N_RB_UL*12*pilot_pos2],
             eNB->frame_parms.N_RB_UL*12*sizeof(int));
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    }
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#endif

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  if (subframe==4) {
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    emos_dump_eNB.timestamp = rt_get_time_ns();
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    emos_dump_eNB.frame_tx = eNB->proc[subframe].frame_rx;
    emos_dump_eNB.rx_total_gain_dB = eNB->rx_total_gain_dB;
    emos_dump_eNB.mimo_mode = eNB->transmission_mode[0];
    memcpy(&emos_dump_eNB.measurements,
           &eNB->measurements[0],
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           sizeof(PHY_MEASUREMENTS_eNB));
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    memcpy(&emos_dump_eNB.UE_stats[0],&eNB->UE_stats[0],NUMBER_OF_UE_MAX*sizeof(LTE_eNB_UE_stats));
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    bytes = rtf_put(CHANSOUNDER_FIFO_MINOR, &emos_dump_eNB, sizeof(fifo_dump_emos_eNB));
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    //bytes = rtf_put(CHANSOUNDER_FIFO_MINOR, "test", sizeof("test"));
    if (bytes!=sizeof(fifo_dump_emos_eNB)) {
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      LOG_W(PHY,"[eNB %d] Frame %d, subframe %d, Problem writing EMOS data to FIFO (bytes=%d, size=%d)\n",
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            eNB->Mod_id,eNB->proc[(subframe+1)%10].frame_rx, subframe,bytes,sizeof(fifo_dump_emos_eNB));
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    } else {
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      if (eNB->proc[(subframe+1)%10].frame_tx%100==0) {
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        LOG_I(PHY,"[eNB %d] Frame %d (%d), subframe %d, Writing %d bytes EMOS data to FIFO\n",
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              eNB->Mod_id,eNB->proc[(subframe+1)%10].frame_rx, ((fifo_dump_emos_eNB*)&emos_dump_eNB)->frame_tx, subframe, bytes);
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      }
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    }
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  }
}
#endif


#define AMP_OVER_SQRT2 ((AMP*ONE_OVER_SQRT2_Q15)>>15)
#define AMP_OVER_2 (AMP>>1)
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int QPSK[4]= {AMP_OVER_SQRT2|(AMP_OVER_SQRT2<<16),AMP_OVER_SQRT2|((65536-AMP_OVER_SQRT2)<<16),((65536-AMP_OVER_SQRT2)<<16)|AMP_OVER_SQRT2,((65536-AMP_OVER_SQRT2)<<16)|(65536-AMP_OVER_SQRT2)};
int QPSK2[4]= {AMP_OVER_2|(AMP_OVER_2<<16),AMP_OVER_2|((65536-AMP_OVER_2)<<16),((65536-AMP_OVER_2)<<16)|AMP_OVER_2,((65536-AMP_OVER_2)<<16)|(65536-AMP_OVER_2)};
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unsigned int taus(void);
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void pmch_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,PHY_VARS_RN *rn, int abstraction_flag,relaying_type_t r_type) {
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#ifdef Rel10
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  MCH_PDU *mch_pduP;
  MCH_PDU  mch_pdu;
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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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  if (abstraction_flag==0) {
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    // This is DL-Cell spec pilots in Control region
    generate_pilots_slot(eNB,
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			 eNB->common_vars.txdataF[0],
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			 AMP,
			 subframe<<1,1);
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  }
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#ifdef Rel10
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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
  mch_pduP = mac_xface->get_mch_sdu(eNB->Mod_id,
				    eNB->CC_id,
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				    proc->frame_tx,
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				    subframe);
  
  switch (r_type) {
  case no_relay:
    if ((mch_pduP->Pdu_size > 0) && (mch_pduP->sync_area == 0)) // TEST: only transmit mcch for sync area 0
      LOG_I(PHY,"[eNB%"PRIu8"] Frame %d subframe %d : Got MCH pdu for MBSFN (MCS %"PRIu8", TBS %d) \n",
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	    eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->mcs,
	    eNB->dlsch_MCH->harq_processes[0]->TBS>>3);
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    else {
      LOG_D(PHY,"[DeNB %"PRIu8"] Frame %d subframe %d : Do not transmit MCH pdu for MBSFN sync area %"PRIu8" (%s)\n",
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	    eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->sync_area,
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	    (mch_pduP->Pdu_size == 0)? "Empty MCH PDU":"Let RN transmit for the moment");
      mch_pduP = NULL;
    }
    
    break;
    
  case multicast_relay:
    if ((mch_pduP->Pdu_size > 0) && ((mch_pduP->mcch_active == 1) || mch_pduP->msi_active==1)) {
      LOG_I(PHY,"[RN %"PRIu8"] Frame %d subframe %d: Got the MCH PDU for MBSFN  sync area %"PRIu8" (MCS %"PRIu8", TBS %"PRIu16")\n",
	    rn->Mod_id,rn->frame, subframe,
	    mch_pduP->sync_area,mch_pduP->mcs,mch_pduP->Pdu_size);
    } else if (rn->mch_avtive[subframe%5] == 1) { // SF2 -> SF7, SF3 -> SF8
      mch_pduP= &mch_pdu;
      memcpy(&mch_pduP->payload, // could be a simple copy
	     rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->b,
	     rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->TBS>>3);
      mch_pduP->Pdu_size = (uint16_t) (rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->TBS>>3);
      mch_pduP->mcs = rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->mcs;
      LOG_I(PHY,"[RN %"PRIu8"] Frame %d subframe %d: Forward the MCH PDU for MBSFN received on SF %d sync area %"PRIu8" (MCS %"PRIu8", TBS %"PRIu16")\n",
	    rn->Mod_id,rn->frame, subframe,subframe%5,
	    rn->sync_area[subframe%5],mch_pduP->mcs,mch_pduP->Pdu_size);
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    } else {
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      mch_pduP=NULL;
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    }
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    rn->mch_avtive[subframe]=0;
    break;
    
  default:
    LOG_W(PHY,"[eNB %"PRIu8"] Frame %d subframe %d: unknown relaying type %d \n",
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	  eNB->Mod_id,proc->frame_tx,subframe,r_type);
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    mch_pduP=NULL;
    break;
  }// switch
  
  if (mch_pduP) {
    fill_eNB_dlsch_MCH(eNB,mch_pduP->mcs,1,0, abstraction_flag);
    // Generate PMCH
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    generate_mch(eNB,proc,(uint8_t*)mch_pduP->payload,abstraction_flag);
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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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void common_signal_procedures (PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,int abstraction_flag) {
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  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
  int **txdataF = eNB->common_vars.txdataF[0];
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  uint8_t *pbch_pdu=&eNB->pbch_pdu[0];
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  int subframe = proc->subframe_tx;
  int frame = proc->frame_tx;
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  // generate Cell-Specific Reference Signals for both slots
  if (abstraction_flag==0) {
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_RS_TX,1);
    generate_pilots_slot(eNB,
			 txdataF,
			 AMP,
			 subframe<<1,0);
    // check that 2nd slot is for DL
    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) &&
	(abstraction_flag==0)) {
      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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    // generate PBCH (Physical Broadcast CHannel) info
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    if ((frame&3) == 0) {
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      pbch_pdu[2] = 0;
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      // FIXME setting pbch_pdu[2] to zero makes the switch statement easier: remove all the or-operators
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      switch (fp->N_RB_DL) {
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      case 6:
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	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (0<<5);
	break;
	
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      case 15:
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	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (1<<5);
	break;
	
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      case 25:
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	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (2<<5);
	break;
	
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      case 50:
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	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (3<<5);
	break;
	
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      case 75:
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	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (4<<5);
	break;
	
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      case 100:
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	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (5<<5);
	break;
	
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      default:
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	// FIXME if we get here, this should be flagged as an error, right?
	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (2<<5);
	break;
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      }
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      pbch_pdu[2] = (pbch_pdu[2]&0xef) |
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	((fp->phich_config_common.phich_duration << 4)&0x10);
      
      switch (fp->phich_config_common.phich_resource) {
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      case oneSixth:
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	pbch_pdu[2] = (pbch_pdu[2]&0xf3) | (0<<2);
	break;
	
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      case half:
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	pbch_pdu[2] = (pbch_pdu[2]&0xf3) | (1<<2);
	break;
	
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      case one:
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	pbch_pdu[2] = (pbch_pdu[2]&0xf3) | (2<<2);
	break;
	
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      case two:
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	pbch_pdu[2] = (pbch_pdu[2]&0xf3) | (3<<2);
	break;
	
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      default:
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	// unreachable
	break;
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      }
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      pbch_pdu[2] = (pbch_pdu[2]&0xfc) | ((frame>>8)&0x3);
      pbch_pdu[1] = frame&0xfc;
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      pbch_pdu[0] = 0;
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    }
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    /// First half of SSS (TDD, slot 1)
    
    if ((fp->frame_type == TDD)&&
	(abstraction_flag==0)){
      generate_sss(txdataF,
		   AMP,
		   fp,
		   (fp->Ncp==NORMAL) ? 6 : 5,
		   1);
    }
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    /// generate PBCH
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    if (abstraction_flag==0) {
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      generate_pbch(&eNB->pbch,
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                    txdataF,
                    AMP,
                    fp,
                    pbch_pdu,
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                    frame&3);
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    }
#ifdef PHY_ABSTRACTION
    else {
      generate_pbch_emul(eNB,pbch_pdu);
    }
#endif
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  }
  else if ((subframe == 1) &&
	   (fp->frame_type == TDD)&&
	   (abstraction_flag==0)) {
    generate_pss(txdataF,
		 AMP,
		 fp,
		 2,
		 2);
  }
  
  // Second half of PSS/SSS (FDD, slot 10)
  else if ((subframe == 5) && 
	   (fp->frame_type == FDD) &&
	   (abstraction_flag==0)) {
        generate_pss(txdataF,
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                     AMP,
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                     &eNB->frame_parms,
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                     (fp->Ncp==NORMAL) ? 6 : 5,
                     10);
        generate_sss(txdataF,
                     AMP,
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                     &eNB->frame_parms,
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                     (fp->Ncp==NORMAL) ? 5 : 4,
                     10);

  }

  //  Second-half of SSS (TDD, slot 11)
  else if ((subframe == 5) &&
	   (fp->frame_type == TDD) &&
	   (abstraction_flag==0)) {
    generate_sss(txdataF,
		 AMP,
		 fp,
		 (fp->Ncp==NORMAL) ? 6 : 5,
		 11);
  }

  // Second half of PSS (TDD, slot 12)
  else if ((subframe == 6) &&
	   (fp->frame_type == TDD) &&
	   (abstraction_flag==0)) {
    generate_pss(txdataF,
		 AMP,
		 fp,
		 2,
		 12);
  }

}

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void generate_eNB_dlsch_params(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,DCI_ALLOC_t *dci_alloc,const int UE_id) {
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  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
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  int frame = proc->frame_tx;
  int subframe = proc->subframe_tx;
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  // if we have SI_RNTI, configure dlsch parameters and CCE index
  if (dci_alloc->rnti == SI_RNTI) {
    LOG_D(PHY,"Generating dlsch params for SI_RNTI\n");
    generate_eNB_dlsch_params_from_dci(frame,
				       subframe,
				       &dci_alloc->dci_pdu[0],
				       dci_alloc->rnti,
				       dci_alloc->format,
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				       &eNB->dlsch_SI,
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				       fp,
				       eNB->pdsch_config_dedicated,
				       SI_RNTI,
				       0,
				       P_RNTI,
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				       eNB->UE_stats[0].DL_pmi_single);
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    eNB->dlsch_SI->nCCE[subframe] = dci_alloc->firstCCE;
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    LOG_T(PHY,"[eNB %"PRIu8"] Frame %d subframe %d : CCE resource for common DCI (SI)  => %"PRIu8"\n",eNB->Mod_id,frame,subframe,
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	  eNB->dlsch_SI->nCCE[subframe]);
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#if defined(SMBV) 
    
    // configure SI DCI
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    if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4)) {
      LOG_D(PHY,"[SMBV] Frame %3d, SI in SF %d DCI %"PRIu32"\n",frame,subframe,i);
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      smbv_configure_common_dci(smbv_fname,(smbv_frame_cnt*10) + (subframe), "SI", dci_alloc, i);
    }
    
#endif
    
    
  } else if (dci_alloc->ra_flag == 1) {  // This is format 1A allocation for RA
    // configure dlsch parameters and CCE index
    LOG_D(PHY,"Generating dlsch params for RA_RNTI\n");    
    generate_eNB_dlsch_params_from_dci(frame,
				       subframe,
				       &dci_alloc->dci_pdu[0],
				       dci_alloc->rnti,
				       dci_alloc->format,
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				       &eNB->dlsch_ra,
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				       fp,
				       eNB->pdsch_config_dedicated,
				       SI_RNTI,
				       dci_alloc->rnti,
				       P_RNTI,
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				       eNB->UE_stats[0].DL_pmi_single);
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    eNB->dlsch_ra->nCCE[subframe] = dci_alloc->firstCCE;
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    LOG_D(PHY,"[eNB %"PRIu8"] Frame %d subframe %d : CCE resource for common DCI (RA)  => %"PRIu8"\n",eNB->Mod_id,frame,subframe,
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	  eNB->dlsch_ra->nCCE[subframe]);
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#if defined(SMBV) 
    
    // configure RA DCI
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    if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4)) {
      LOG_D(PHY,"[SMBV] Frame %3d, RA in SF %d DCI %"PRIu32"\n",frame,subframe,i);
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      smbv_configure_common_dci(smbv_fname,(smbv_frame_cnt*10) + (subframe), "RA", dci_alloc, i);
    }
    
#endif
    
  }
  
  else if ((dci_alloc->format != format0)&&
	   (dci_alloc->format != format3)&&
	   (dci_alloc->format != format3A)&&
	   (dci_alloc->format != format4)){ // this is a normal DLSCH allocation
    

    
    if (UE_id>=0) {
#if defined(SMBV) 
      // Configure this user
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      if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4)) {
	LOG_D(PHY,"[SMBV] Frame %3d, SF %d (SMBV SF %d) Configuring user %d with RNTI %"PRIu16" in TM%"PRIu8"\n",frame,subframe,(smbv_frame_cnt*10) + (subframe),UE_id+1,
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              dci_alloc->rnti,eNB->transmission_mode[(uint8_t)UE_id]);
	smbv_configure_user(smbv_fname,UE_id+1,eNB->transmission_mode[(uint8_t)UE_id],dci_alloc->rnti);
      }
      
#endif

      LOG_D(PHY,"Generating dlsch params for RNTI %x\n",dci_alloc->rnti);      
      generate_eNB_dlsch_params_from_dci(frame,
					 subframe,
					 &dci_alloc->dci_pdu[0],
					 dci_alloc->rnti,
					 dci_alloc->format,
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					 eNB->dlsch[(uint8_t)UE_id],
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					 fp,
					 eNB->pdsch_config_dedicated,
					 SI_RNTI,
					 0,
					 P_RNTI,
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					 eNB->UE_stats[(uint8_t)UE_id].DL_pmi_single);
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      LOG_D(PHY,"[eNB %"PRIu8"][PDSCH %"PRIx16"/%"PRIu8"] Frame %d subframe %d: Generated dlsch params\n",
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	    eNB->Mod_id,dci_alloc->rnti,eNB->dlsch[(uint8_t)UE_id][0]->current_harq_pid,frame,subframe);
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      eNB->dlsch[(uint8_t)UE_id][0]->nCCE[subframe] = dci_alloc->firstCCE;
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      LOG_D(PHY,"[eNB %"PRIu8"] Frame %d subframe %d : CCE resource for ue DCI (PDSCH %"PRIx16")  => %"PRIu8"/%u\n",eNB->Mod_id,frame,subframe,
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	    dci_alloc->rnti,eNB->dlsch[(uint8_t)UE_id][0]->nCCE[subframe]);
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#if defined(SMBV) 
      
      // configure UE-spec DCI
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      if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4)) {
	LOG_D(PHY,"[SMBV] Frame %3d, PDSCH in SF %d DCI %"PRIu32"\n",frame,subframe,i);
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	smbv_configure_ue_spec_dci(smbv_fname,(smbv_frame_cnt*10) + (subframe), UE_id+1,dci_alloc, i);
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      }
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#endif
      
      LOG_D(PHY,"[eNB %"PRIu8"][DCI][PDSCH %"PRIx16"] Frame %d subframe %d UE_id %"PRId8" Generated DCI format %d, aggregation %d\n",
	    eNB->Mod_id, dci_alloc->rnti,
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	    frame, subframe,UE_id,
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	    dci_alloc->format,
	    1<<dci_alloc->L);
    } else {
      LOG_D(PHY,"[eNB %"PRIu8"][PDSCH] Frame %d : No UE_id with corresponding rnti %"PRIx16", dropping DLSCH\n",
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	    eNB->Mod_id,frame,dci_alloc->rnti);
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    }
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  }
  
}
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841
void generate_eNB_ulsch_params(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,DCI_ALLOC_t *dci_alloc,const int UE_id) {
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843
  int harq_pid;
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  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
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  int frame = proc->frame_tx;
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  int subframe = proc->subframe_tx;
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  LOG_D(PHY,
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	"[eNB %"PRIu8"][PUSCH %"PRIu8"] Frame %d subframe %d UL Frame %"PRIu32", UL Subframe %"PRIu8", Generated ULSCH (format0) DCI (rnti %"PRIx16", dci %"PRIx8"), aggregation %d\n",
	eNB->Mod_id,
	subframe2harq_pid(fp,
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			  pdcch_alloc2ul_frame(fp,frame,subframe),
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			  pdcch_alloc2ul_subframe(fp,subframe)),
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	frame,
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	subframe,
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	pdcch_alloc2ul_frame(fp,frame,subframe),
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	pdcch_alloc2ul_subframe(fp,subframe),
	dci_alloc->rnti,
	dci_alloc->dci_pdu[0],
	1<<dci_alloc->L);
  
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  generate_eNB_ulsch_params_from_dci(eNB,
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				     proc,
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				     &dci_alloc->dci_pdu[0],
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				     dci_alloc->rnti,
				     format0,
				     UE_id,
				     SI_RNTI,
				     0,
				     P_RNTI,
				     CBA_RNTI,
				     0);  // do_srs
  
  LOG_T(PHY,"[eNB %"PRIu8"] Frame %d subframe %d : CCE resources for UE spec DCI (PUSCH %"PRIx16") => %d\n",
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	eNB->Mod_id,frame,subframe,dci_alloc->rnti,
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	dci_alloc->firstCCE);
  
#if defined(SMBV) 
  
  // configure UE-spec DCI for UL Grant
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  if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4)) {
    LOG_D(PHY,"[SMBV] Frame %3d, SF %d UL DCI %"PRIu32"\n",frame,subframe,i);
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    smbv_configure_ue_spec_dci(smbv_fname,(smbv_frame_cnt*10) + (subframe), UE_id+1, &DCI_pdu->dci_alloc[i], i);
  }
  
#endif
  
  
  // get the hard_pid for this subframe 
  harq_pid = subframe2harq_pid(fp,
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			       pdcch_alloc2ul_frame(fp,frame,subframe),
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			       pdcch_alloc2ul_subframe(fp,subframe));
  
  if (harq_pid==255) { // should not happen, log an error and exit, this is a fatal error
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    LOG_E(PHY,"[eNB %"PRIu8"] Frame %d: Bad harq_pid for ULSCH allocation\n",eNB->Mod_id,frame);
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    mac_xface->macphy_exit("FATAL\n"); 
  }
  
  if ((dci_alloc->rnti  >= CBA_RNTI) && (dci_alloc->rnti < P_RNTI))
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    eNB->ulsch[(uint32_t)UE_id]->harq_processes[harq_pid]->subframe_cba_scheduling_flag = 1;
901
  else
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    eNB->ulsch[(uint32_t)UE_id]->harq_processes[harq_pid]->subframe_scheduling_flag = 1;
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}
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906
void pdsch_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,LTE_eNB_DLSCH_t *dlsch, LTE_eNB_DLSCH_t *dlsch1,LTE_eNB_UE_stats *ue_stats,int ra_flag,int num_pdcch_symbols,int abstraction_flag) {
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  int frame=proc->frame_tx;
  int subframe=proc->subframe_tx;
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  int harq_pid = dlsch->current_harq_pid;
  LTE_DL_eNB_HARQ_t *dlsch_harq=dlsch->harq_processes[harq_pid];
  int input_buffer_length = dlsch_harq->TBS/8;
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  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
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  uint8_t *DLSCH_pdu=NULL;
  uint8_t DLSCH_pdu_tmp[768*8];
  uint8_t DLSCH_pdu_rar[256];
  int i;

  LOG_D(PHY,
	"[eNB %"PRIu8"][PDSCH %"PRIx16"/%"PRIu8"] Frame %d, subframe %d: Generating PDSCH/DLSCH with input size = %"PRIu16", G %d, nb_rb %"PRIu16", mcs %"PRIu8", pmi_alloc %"PRIx16", rv %"PRIu8" (round %"PRIu8")\n",
	eNB->Mod_id, dlsch->rnti,harq_pid,
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	frame, subframe, input_buffer_length,
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	get_G(fp,
	      dlsch_harq->nb_rb,
	      dlsch_harq->rb_alloc,
	      get_Qm(dlsch_harq->mcs),
	      dlsch_harq->Nl,
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	      num_pdcch_symbols,frame,subframe),
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	dlsch_harq->nb_rb,
	dlsch_harq->mcs,
	pmi2hex_2Ar1(dlsch_harq->pmi_alloc),
	dlsch_harq->rvidx,
	dlsch_harq->round);
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#if defined(MESSAGE_CHART_GENERATOR_PHY)
      MSC_LOG_TX_MESSAGE(
        MSC_PHY_ENB,MSC_PHY_UE,
        NULL,0,
        "%05u:%02u PDSCH/DLSCH input size = %"PRIu16", G %d, nb_rb %"PRIu16", mcs %"PRIu8", pmi_alloc %"PRIx16", rv %"PRIu8" (round %"PRIu8")",
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        frame, subframe,
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        input_buffer_length,
        get_G(fp,
        		dlsch_harq->nb_rb,
        		dlsch_harq->rb_alloc,
        		get_Qm(dlsch_harq->mcs),
        		dlsch_harq->Nl,
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        		num_pdcch_symbols,frame,subframe),
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        dlsch_harq->nb_rb,
        dlsch_harq->mcs,
        pmi2hex_2Ar1(dlsch_harq->pmi_alloc),
        dlsch_harq->rvidx,
        dlsch_harq->round);
#endif

      if (ue_stats) ue_stats->dlsch_sliding_cnt++;

      if (dlsch_harq->round == 0) {

	if (ue_stats)
	  ue_stats->dlsch_trials[harq_pid][0]++;

	if (eNB->mac_enabled==1) {
	  if (ra_flag == 0) {
	    DLSCH_pdu = mac_xface->get_dlsch_sdu(eNB->Mod_id,
						 eNB->CC_id,
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						 frame,
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						 dlsch->rnti,
						 0);
	  }
	  else {
	    int16_t crnti = mac_xface->fill_rar(eNB->Mod_id,
						eNB->CC_id,
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						frame,
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						DLSCH_pdu_rar,
						fp->N_RB_UL,
						input_buffer_length);
	    DLSCH_pdu = DLSCH_pdu_rar;

	    int UE_id;

	    if (crnti!=0) 
	      UE_id = add_ue(crnti,eNB);
	    else 
	      UE_id = -1;
	    
	    if (UE_id==-1) {
	      LOG_W(PHY,"[eNB] Max user count reached.\n");
	      mac_xface->cancel_ra_proc(eNB->Mod_id,
					eNB->CC_id,
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					frame,
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					crnti);
	    } else {
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	      eNB->UE_stats[(uint32_t)UE_id].mode = RA_RESPONSE;
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	      // Initialize indicator for first SR (to be cleared after ConnectionSetup is acknowledged)
	      eNB->first_sr[(uint32_t)UE_id] = 1;
	      
	      generate_eNB_ulsch_params_from_rar(DLSCH_pdu,
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						 frame,
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						 (subframe),
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						 eNB->ulsch[(uint32_t)UE_id],
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						 fp);
	      
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	      eNB->ulsch[(uint32_t)UE_id]->Msg3_active = 1;
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	      get_Msg3_alloc(fp,
			     subframe,
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			     frame,
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			     &eNB->ulsch[(uint32_t)UE_id]->Msg3_frame,
			     &eNB->ulsch[(uint32_t)UE_id]->Msg3_subframe);
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	      LOG_D(PHY,"[eNB][RAPROC] Frame %d subframe %d, Activated Msg3 demodulation for UE %"PRId8" in frame %"PRIu32", subframe %"PRIu8"\n",
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		    frame,
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		    subframe,
		    UE_id,
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		    eNB->ulsch[(uint32_t)UE_id]->Msg3_frame,
		    eNB->ulsch[(uint32_t)UE_id]->Msg3_subframe);
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	    }
	    if (ue_stats) ue_stats->total_TBS_MAC += dlsch_harq->TBS;
	  }
	}
	else {
	  DLSCH_pdu = DLSCH_pdu_tmp;
	  
	  for (i=0; i<input_buffer_length; i++)
	    DLSCH_pdu[i] = (unsigned char)(taus()&0xff);
	}
	
#if defined(SMBV) 
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        // Configures the data source of allocation (allocation is configured by DCI)
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        if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4)) {
          LOG_D(PHY,"[SMBV] Frame %3d, Configuring PDSCH payload in SF %d alloc %"PRIu8"\n",frame,(smbv_frame_cnt*10) + (subframe),smbv_alloc_cnt);
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	  //          smbv_configure_datalist_for_user(smbv_fname, find_ue(dlsch->rnti,eNB)+1, DLSCH_pdu, input_buffer_length);
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        }
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#endif
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#ifdef DEBUG_PHY_PROC
#ifdef DEBUG_DLSCH
        LOG_T(PHY,"eNB DLSCH SDU: \n");

        for (i=0; i<dlsch_harq->TBS>>3; i++)
          LOG_T(PHY,"%"PRIx8".",DLSCH_pdu[i]);

        LOG_T(PHY,"\n");
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#endif
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#endif
      } else {
        ue_stats->dlsch_trials[harq_pid][dlsch_harq->round]++;
#ifdef DEBUG_PHY_PROC
#ifdef DEBUG_DLSCH
        LOG_D(PHY,"[eNB] This DLSCH is a retransmission\n");
#endif
#endif
      }
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      if (abstraction_flag==0) {
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	LOG_D(PHY,"Generating DLSCH/PDSCH %d\n",ra_flag);
        // 36-212
        start_meas(&eNB->dlsch_encoding_stats);
        dlsch_encoding(DLSCH_pdu,
                       fp,
                       num_pdcch_symbols,
                       dlsch,
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                       frame,subframe,
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                       &eNB->dlsch_rate_matching_stats,
                       &eNB->dlsch_turbo_encoding_stats,
                       &eNB->dlsch_interleaving_stats);
        stop_meas(&eNB->dlsch_encoding_stats);
        // 36-211
        start_meas(&eNB->dlsch_scrambling_stats);
        dlsch_scrambling(fp,
                         0,
                         dlsch,
                         get_G(fp,
                               dlsch_harq->nb_rb,
                               dlsch_harq->rb_alloc,
                               get_Qm(dlsch_harq->mcs),
                               dlsch_harq->Nl,
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                               num_pdcch_symbols,frame,subframe),
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                         0,
                         subframe<<1);
        stop_meas(&eNB->dlsch_scrambling_stats);
        start_meas(&eNB->dlsch_modulation_stats);
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        dlsch_modulation(eNB->common_vars.txdataF[0],
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			 AMP,
			 subframe,
			 fp,
			 num_pdcch_symbols,
			 dlsch,
			 dlsch1);
	
        stop_meas(&eNB->dlsch_modulation_stats);
      }
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#ifdef PHY_ABSTRACTION
      else {
        start_meas(&eNB->dlsch_encoding_stats);
        dlsch_encoding_emul(eNB,
                            DLSCH_pdu,
                            dlsch);
        stop_meas(&eNB->dlsch_encoding_stats);
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      }
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#endif
      dlsch->active = 0;
}
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void phy_procedures_eNB_TX(PHY_VARS_eNB *eNB,
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			   eNB_rxtx_proc_t *proc,
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			   uint8_t abstraction_flag,
                           relaying_type_t r_type,
			   PHY_VARS_RN *rn)
{
  UNUSED(rn);
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  int frame=proc->frame_tx;
  int subframe=proc->subframe_tx;
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  //  uint16_t input_buffer_length;
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  uint32_t i,aa;
  uint8_t harq_pid;
  DCI_PDU *DCI_pdu;
  DCI_PDU DCI_pdu_tmp;
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  int8_t UE_id=0;
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  uint8_t num_pdcch_symbols=0;
  uint8_t ul_subframe;
  uint32_t ul_frame;
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  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
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  DCI_ALLOC_t *dci_alloc=(DCI_ALLOC_t *)NULL;
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#if defined(SMBV) 
  // counts number of allocations in subframe
  // there is at least one allocation for PDCCH
  uint8_t smbv_alloc_cnt = 1;
#endif
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX,1);
  start_meas(&eNB->phy_proc_tx);
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  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
    // If we've dropped the UE, go back to PRACH mode for this UE
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    if ((frame==0)&&(subframe==0)) {
      if (eNB->UE_stats[i].crnti > 0) {
	LOG_I(PHY,"UE %d : rnti %x\n",i,eNB->UE_stats[i].crnti);
      }
    }
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    if (eNB->UE_stats[i].ulsch_consecutive_errors == ULSCH_max_consecutive_errors) {
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      LOG_W(PHY,"[eNB %d, CC %d] frame %d, subframe %d, UE %d: ULSCH consecutive error count reached %u, triggering UL Failure\n",
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            eNB->Mod_id,eNB->CC_id,frame,subframe, i, eNB->UE_stats[i].ulsch_consecutive_errors);
      eNB->UE_stats[i].ulsch_consecutive_errors=0;
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      mac_xface->UL_failure_indication(eNB->Mod_id,
				       eNB->CC_id,
				       frame,
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				       eNB->UE_stats[i].crnti,
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				       subframe);
				       
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    }
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  }
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// Get scheduling info for next subframe
// This is called only for the CC_id = 0 and triggers scheduling for all CC_id's
  if (eNB->mac_enabled==1) {
    if (eNB->CC_id == 0) {
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      mac_xface->eNB_dlsch_ulsch_scheduler(eNB->Mod_id,0,frame,subframe);//,1);
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    }
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  }
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// clear the transmit data array for the current subframe
  if (abstraction_flag==0) {
    for (aa=0; aa<fp->nb_antennas_tx_eNB; aa++) {      
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      memset(&eNB->common_vars.txdataF[0][aa][subframe*fp->ofdm_symbol_size*(fp->symbols_per_tti)],
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             0,fp->ofdm_symbol_size*(fp->symbols_per_tti)*sizeof(int32_t));
    }
  }
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1181
  if (is_pmch_subframe(frame,subframe,fp)) {
1182
    pmch_procedures(eNB,proc,rn,abstraction_flag,r_type);
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  }
  else {
    // this is not a pmch subframe, so generate PSS/SSS/PBCH
1186
    common_signal_procedures(eNB,proc,abstraction_flag);
1187
  }
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1189
#if defined(SMBV) 
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  // PBCH takes one allocation
1192
  if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4)) {
1193
    if (subframe==0)
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      smbv_alloc_cnt++;
  }
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1197
#endif
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1199
  if (eNB->mac_enabled==1) {
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    // Parse DCI received from MAC
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PDCCH_TX,1);
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    DCI_pdu = mac_xface->get_dci_sdu(eNB->Mod_id,
				     eNB->CC_id,
1204
				     frame,
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				     subframe);
  }
  else {
    DCI_pdu = &DCI_pdu_tmp;
1209
#ifdef EMOS_CHANNEL
1210
    fill_dci_emos(DCI_pdu,eNB);
1211
#else
1212
    fill_dci(DCI_pdu,eNB,proc);
1213
#endif
1214
  }
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  // clear existing ulsch dci allocations before applying info from MAC  (this is table
1217
  ul_subframe = pdcch_alloc2ul_subframe(fp,subframe);
1218
  ul_frame = pdcch_alloc2ul_frame(fp,frame,subframe);
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  if ((subframe_select(fp,ul_subframe)==SF_UL) ||
      (fp->frame_type == FDD)) {
    harq_pid = subframe2harq_pid(fp,ul_frame,ul_subframe);
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1224
    // clear DCI allocation maps for new subframe
1225
    for (i=0; i<NUMBER_OF_UE_MAX; i++)
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      if (eNB->ulsch[i]) {
        eNB->ulsch[i]->harq_processes[harq_pid]->dci_alloc=0;
        eNB->ulsch[i]->harq_processes[harq_pid]->rar_alloc=0;
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      }
  }
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  // clear previous allocation information for all UEs
1233
  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
1234
    eNB->dlsch[i][0]->subframe_tx[subframe] = 0;
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  }
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1238
  num_pdcch_symbols = DCI_pdu->num_pdcch_symbols;
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  LOG_D(PHY,"num_pdcch_symbols %"PRIu8",(dci common %"PRIu8", dci uespec %"PRIu8"\n",num_pdcch_symbols,
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        DCI_pdu->Num_common_dci,DCI_pdu->Num_ue_spec_dci);

1242
#if defined(SMBV) 
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  // Sets up PDCCH and DCI table
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  if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4) && ((DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci)>0)) {
    LOG_D(PHY,"[SMBV] Frame %3d, SF %d PDCCH, number of DCIs %d\n",frame,subframe,DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci);
1246
    dump_dci(fp,&DCI_pdu->dci_alloc[0]);
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    smbv_configure_pdcch(smbv_fname,(smbv_frame_cnt*10) + (subframe),num_pdcch_symbols,DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci);
  }
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#endif

1251 1252
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,DCI_pdu->num_pdcch_symbols);

1253
  // loop over all DCIs for this subframe to generate DLSCH allocations
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  for (i=0; i<DCI_pdu->Num_common_dci + DCI_pdu->Num_ue_spec_dci ; i++) {
    LOG_D(PHY,"[eNB] Subframe %d: DCI %d/%d : rnti %x, CCEind %d\n",subframe,i,DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci,DCI_pdu->dci_alloc[i].rnti,DCI_pdu->dci_alloc[i].firstCCE);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,DCI_pdu->dci_alloc[i].rnti);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,DCI_pdu->dci_alloc[i].format);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,DCI_pdu->dci_alloc[i].firstCCE);
1259
    dci_alloc = &DCI_pdu->dci_alloc[i];
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    if ((dci_alloc->rnti<= P_RNTI) && 
	(dci_alloc->ra_flag!=1)) {
      if (eNB->mac_enabled==1)
	UE_id = find_ue((int16_t)dci_alloc->rnti,eNB);
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      else
	UE_id = i;
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    }
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    else UE_id=0;
    
1270
    generate_eNB_dlsch_params(eNB,proc,dci_alloc,UE_id);
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  }
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  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,(frame*10)+subframe);

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  // Apply physicalConfigDedicated if needed
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  // This is for UEs that have received this IE, which changes these DL and UL configuration, we apply after a delay for the eNodeB UL parameters
  phy_config_dedicated_eNB_step2(eNB);
  
  // Now loop again over the DCIs for UL configuration
1281
  for (i=0; i<DCI_pdu->Num_common_dci + DCI_pdu->Num_ue_spec_dci ; i++) {
1282 1283 1284
    if (dci_alloc->format == format0) {  // this is a ULSCH allocation
      if (eNB->mac_enabled==1)
	UE_id = find_ue((int16_t)dci_alloc->rnti,eNB);
1285 1286
      else
	UE_id = i;
1287
      
1288
      if (UE_id<0) { // should not happen, log an error and exit, this is a fatal error
1289
	LOG_E(PHY,"[eNB %"PRIu8"] Frame %d: Unknown UE_id for rnti %"PRIx16"\n",eNB->Mod_id,frame,dci_alloc->rnti);
1290
	mac_xface->macphy_exit("FATAL\n"); 
1291
      }
1292
      generate_eNB_ulsch_params(eNB,proc,dci_alloc,UE_id);
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    }
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  }
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  // if we have DCI to generate do it now
  if ((DCI_pdu->Num_common_dci + DCI_pdu->Num_ue_spec_dci)>0) {
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1303 1304

  } else { // for emulation!!
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    eNB->num_ue_spec_dci[(subframe)&1]=0;
    eNB->num_common_dci[(subframe)&1]=0;
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  }
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  if (abstraction_flag == 0) {
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    if (DCI_pdu->Num_ue_spec_dci+DCI_pdu->Num_common_dci > 0)
1312
      LOG_D(PHY,"[eNB %"PRIu8"] Frame %d, subframe %d: Calling generate_dci_top (pdcch) (common %"PRIu8",ue_spec %"PRIu8")\n",eNB->Mod_id,frame, subframe,
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            DCI_pdu->Num_common_dci,DCI_pdu->Num_ue_spec_dci);

    num_pdcch_symbols = generate_dci_top(DCI_pdu->Num_ue_spec_dci,
                                         DCI_pdu->Num_common_dci,
                                         DCI_pdu->dci_alloc,
                                         0,
                                         AMP,
1320
                                         fp,
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                                         eNB->common_vars.txdataF[0],
1322
                                         subframe);
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  }
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1326
#ifdef PHY_ABSTRACTION // FIXME this ifdef seems suspicious
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  else {
1328
    LOG_D(PHY,"[eNB %"PRIu8"] Frame %d, subframe %d: Calling generate_dci_to_emul\n",eNB->Mod_id,frame, subframe);
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    num_pdcch_symbols = generate_dci_top_emul(eNB,DCI_pdu->Num_ue_spec_dci,DCI_pdu->Num_common_dci,DCI_pdu->dci_alloc,subframe);
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  }
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1332 1333
#endif

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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PDCCH_TX,0);
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  // Check for SI activity
1337

1338
  if (eNB->dlsch_SI->active == 1) {
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1340
    pdsch_procedures(eNB,proc,eNB->dlsch_SI,(LTE_eNB_DLSCH_t*)NULL,(LTE_eNB_UE_stats*)NULL,0,num_pdcch_symbols,abstraction_flag);
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1342
#if defined(SMBV) 
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    // Configures the data source of allocation (allocation is configured by DCI)
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    if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4)) {
      LOG_D(PHY,"[SMBV] Frame %3d, Configuring SI payload in SF %d alloc %"PRIu8"\n",frame,(smbv_frame_cnt*10) + (subframe),smbv_alloc_cnt);
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      smbv_configure_datalist_for_alloc(smbv_fname, smbv_alloc_cnt++, (smbv_frame_cnt*10) + (subframe), DLSCH_pdu, input_buffer_length);
    }
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#endif
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  }
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  // Check for RA activity
1354
  if (eNB->dlsch_ra->active == 1) {
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#if defined(SMBV) 
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    // Configures the data source of allocation (allocation is configured by DCI)
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    if (smbv_is_config_frame(frame) && (smbv_frame_cnt < 4)) {
      LOG_D(PHY,"[SMBV] Frame %3d, Configuring RA payload in SF %d alloc %"PRIu8"\n",frame,(smbv_frame_cnt*10) + (subframe),smbv_alloc_cnt);
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      smbv_configure_datalist_for_alloc(smbv_fname, smbv_alloc_cnt++, (smbv_frame_cnt*10) + (subframe), dlsch_input_buffer, input_buffer_length);
    }
    
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#endif
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    LOG_D(PHY,"[eNB %"PRIu8"][RAPROC] Frame %d, subframe %d: Calling generate_dlsch (RA),Msg3 frame %"PRIu32", Msg3 subframe %"PRIu8"\n",
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	  eNB->Mod_id,
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	  frame, subframe,
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	  eNB->ulsch[(uint32_t)UE_id]->Msg3_frame,
	  eNB->ulsch[(uint32_t)UE_id]->Msg3_subframe);
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    pdsch_procedures(eNB,proc,eNB->dlsch_ra,(LTE_eNB_DLSCH_t*)NULL,(LTE_eNB_UE_stats*)NULL,1,num_pdcch_symbols,abstraction_flag);
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    eNB->dlsch_ra->active = 0;
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  }
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  // Now scan UE specific DLSCH
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  for (UE_id=0; UE_id<NUMBER_OF_UE_MAX; UE_id++)
  {
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    if ((eNB->dlsch[(uint8_t)UE_id][0])&&
        (eNB->dlsch[(uint8_t)UE_id][0]->rnti>0)&&
        (eNB->dlsch[(uint8_t)UE_id][0]->active == 1)) {
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      pdsch_procedures(eNB,proc,eNB->dlsch[(uint8_t)UE_id][0],eNB->dlsch[(uint8_t)UE_id][1],&eNB->UE_stats[(uint32_t)UE_id],0,num_pdcch_symbols,abstraction_flag);
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    }
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    else if ((eNB->dlsch[(uint8_t)UE_id][0])&&
             (eNB->dlsch[(uint8_t)UE_id][0]->rnti>0)&&
             (eNB->dlsch[(uint8_t)UE_id][0]->active == 0)) {
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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)
1396
      eNB->dlsch[(uint8_t)UE_id][0]->subframe_tx[subframe]=0;
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    }
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  }
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  // if we have PHICH to generate
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  if (is_phich_subframe(fp,subframe))
1405
  {
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    generate_phich_top(eNB,
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		       proc,
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                       AMP,
                       0,
                       abstraction_flag);
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  }
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#ifdef EMOS
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  phy_procedures_emos_eNB_TX(subframe, eNB);
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#endif
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1419
#if !(defined(EXMIMO) || defined(OAI_USRP) || defined (CPRIGW))
1420
  
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  if (abstraction_flag==0)
  {
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    start_meas(&eNB->ofdm_mod_stats);
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    do_OFDM_mod(eNB->common_vars.txdataF[0],
                eNB->common_vars.txdata[0],
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                frame,subframe<<1,
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                fp);
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    do_OFDM_mod(eNB->common_vars.txdataF[0],
                eNB->common_vars.txdata[0],
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                frame,1+(subframe<<1),
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                fp);
    stop_meas(&eNB->ofdm_mod_stats);
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  }
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#endif
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX,0);
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  stop_meas(&eNB->phy_proc_tx);
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}

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void process_Msg3(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,uint8_t UE_id, uint8_t harq_pid)
1443
{
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  // this prepares the demodulation of the first PUSCH of a new user, containing Msg3
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  int subframe = proc->subframe_rx;
  int frame = proc->frame_rx;
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  LOG_D(PHY,"[eNB %d][RAPROC] frame %d : subframe %d : process_Msg3 UE_id %d (active %d, subframe %d, frame %d)\n",
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        eNB->Mod_id,
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        frame,subframe,
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        UE_id,eNB->ulsch[(uint32_t)UE_id]->Msg3_active,
        eNB->ulsch[(uint32_t)UE_id]->Msg3_subframe,
        eNB->ulsch[(uint32_t)UE_id]->Msg3_frame);
  eNB->ulsch[(uint32_t)UE_id]->Msg3_flag = 0;
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  if ((eNB->ulsch[(uint32_t)UE_id]->Msg3_active == 1) &&
      (eNB->ulsch[(uint32_t)UE_id]->Msg3_subframe == subframe) &&
      (eNB->ulsch[(uint32_t)UE_id]->Msg3_frame == (uint32_t)frame))   {
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    //    harq_pid = 0;
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    eNB->ulsch[(uint32_t)UE_id]->Msg3_active = 0;
    eNB->ulsch[(uint32_t)UE_id]->Msg3_flag = 1;
    eNB->ulsch[(uint32_t)UE_id]->harq_processes[harq_pid]->subframe_scheduling_flag=1;
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    LOG_D(PHY,"[eNB %d][RAPROC] frame %d, subframe %d: Setting subframe_scheduling_flag (Msg3) for UE %d\n",
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          eNB->Mod_id,
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          frame,subframe,UE_id);
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  }
}


// This function retrieves the harq_pid of the corresponding DLSCH process
// and updates the error statistics of the DLSCH based on the received ACK
// info from UE along with the round index.  It also performs the fine-grain
// rate-adaptation based on the error statistics derived from the ACK/NAK process

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void process_HARQ_feedback(uint8_t UE_id,
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                           PHY_VARS_eNB *eNB,
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			   eNB_rxtx_proc_t *proc,
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                           uint8_t pusch_flag,
                           uint8_t *pucch_payload,
                           uint8_t pucch_sel,
                           uint8_t SR_payload)
{
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  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
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  uint8_t dl_harq_pid[8],dlsch_ACK[8],dl_subframe;
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  LTE_eNB_DLSCH_t *dlsch             =  eNB->dlsch[(uint32_t)UE_id][0];
  LTE_eNB_UE_stats *ue_stats         =  &eNB->UE_stats[(uint32_t)UE_id];
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  LTE_DL_eNB_HARQ_t *dlsch_harq_proc;
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  uint8_t subframe_m4,M,m;
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  int mp;
  int all_ACKed=1,nb_alloc=0,nb_ACK=0;
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  int frame = proc->frame_rx;
  int subframe = proc->subframe_rx;
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  int harq_pid = subframe2harq_pid( fp,frame,subframe);
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  if (fp->frame_type == FDD) { //FDD
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    subframe_m4 = (subframe<4) ? subframe+6 : subframe-4;
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    dl_harq_pid[0] = dlsch->harq_ids[subframe_m4];
    M=1;
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1505
    if (pusch_flag == 1) {
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      dlsch_ACK[0] = eNB->ulsch[(uint8_t)UE_id]->harq_processes[harq_pid]->o_ACK[0];
1507
      if (dlsch->subframe_tx[subframe_m4]==1)
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      LOG_D(PHY,"[eNB %d] Frame %d: Received ACK/NAK %d on PUSCH for subframe %d\n",eNB->Mod_id,
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	    frame,dlsch_ACK[0],subframe_m4);
    }
    else {
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      dlsch_ACK[0] = pucch_payload[0];
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      LOG_D(PHY,"[eNB %d] Frame %d: Received ACK/NAK %d on PUCCH for subframe %d\n",eNB->Mod_id,
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	    frame,dlsch_ACK[0],subframe_m4);
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      /*
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      if (dlsch_ACK[0]==0)
	AssertFatal(0,"Exiting on NAK on PUCCH\n");
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      */
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    }
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#if defined(MESSAGE_CHART_GENERATOR_PHY)
    MSC_LOG_RX_MESSAGE(
      MSC_PHY_ENB,MSC_PHY_UE,
      NULL,0,
      "%05u:%02u %s received %s  rnti %x harq id %u  tx SF %u",
      frame,subframe,
      (pusch_flag == 1)?"PUSCH":"PUCCH",
      (dlsch_ACK[0])?"ACK":"NACK",
      dlsch->rnti,
      dl_harq_pid[0],
      subframe_m4
      );
#endif
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  } else { // TDD Handle M=1,2 cases only

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    M=ul_ACK_subframe2_M(fp,
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                         subframe);

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    // Now derive ACK information for TDD
    if (pusch_flag == 1) { // Do PUSCH ACK/NAK first
      // detect missing DAI
      //FK: this code is just a guess
      //RK: not exactly, yes if scheduled from PHICH (i.e. no DCI format 0)
      //    otherwise, it depends on how many of the PDSCH in the set are scheduled, we can leave it like this,
      //    but we have to adapt the code below.  For example, if only one out of 2 are scheduled, only 1 bit o_ACK is used

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      dlsch_ACK[0] = eNB->ulsch[(uint8_t)UE_id]->harq_processes[harq_pid]->o_ACK[0];
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      dlsch_ACK[1] = (eNB->pucch_config_dedicated[UE_id].tdd_AckNackFeedbackMode == bundling)
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                     ?eNB->ulsch[(uint8_t)UE_id]->harq_processes[harq_pid]->o_ACK[0]:eNB->ulsch[(uint8_t)UE_id]->harq_processes[harq_pid]->o_ACK[1];
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    }
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1553
    else {  // PUCCH ACK/NAK
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      if ((SR_payload == 1)&&(pucch_sel!=2)) {  // decode Table 7.3 if multiplexing and SR=1
        nb_ACK = 0;

        if (M == 2) {
          if ((pucch_payload[0] == 1) && (pucch_payload[1] == 1)) // b[0],b[1]
            nb_ACK = 1;
          else if ((pucch_payload[0] == 1) && (pucch_payload[1] == 0))
            nb_ACK = 2;
        } else if (M == 3) {
          if ((pucch_payload[0] == 1) && (pucch_payload[1] == 1))
            nb_ACK = 1;
          else if ((pucch_payload[0] == 1) && (pucch_payload[1] == 0))
            nb_ACK = 2;
          else if ((pucch_payload[0] == 0) && (pucch_payload[1] == 1))
            nb_ACK = 3;
        }
      } else if (pucch_sel == 2) { // bundling or M=1
        dlsch_ACK[0] = pucch_payload[0];
        dlsch_ACK[1] = pucch_payload[0];
      } else { // multiplexing with no SR, this is table 10.1
        if (M==1)
          dlsch_ACK[0] = pucch_payload[0];
        else if (M==2) {
          if (((pucch_sel == 1) && (pucch_payload[0] == 1) && (pucch_payload[1] == 1)) ||
              ((pucch_sel == 0) && (pucch_payload[0] == 0) && (pucch_payload[1] == 1)))
            dlsch_ACK[0] = 1;
          else
            dlsch_ACK[0] = 0;

          if (((pucch_sel == 1) && (pucch_payload[0] == 1) && (pucch_payload[1] == 1)) ||
              ((pucch_sel == 1) && (pucch_payload[0] == 0) && (pucch_payload[1] == 0)))
            dlsch_ACK[1] = 1;
          else
            dlsch_ACK[1] = 0;
        }
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      }
1590
    }
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  }

  // handle case where positive SR was transmitted with multiplexing
  if ((SR_payload == 1)&&(pucch_sel!=2)&&(pusch_flag == 0)) {
1595
    nb_alloc = 0;
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    for (m=0; m<M; m++) {
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      dl_subframe = ul_ACK_subframe2_dl_subframe(fp,
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                    subframe,
                    m);

      if (dlsch->subframe_tx[dl_subframe]==1)
        nb_alloc++;
1604
    }
1605

1606 1607
    if (nb_alloc == nb_ACK)
      all_ACKed = 1;
1608
    else
1609
      all_ACKed = 0;
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  }


1613
  for (m=0,mp=-1; m<M; m++) {
1614

1615
    dl_subframe = ul_ACK_subframe2_dl_subframe(fp,
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                  subframe,
                  m);
1618

1619 1620
    if (dlsch->subframe_tx[dl_subframe]==1) {
      if (pusch_flag == 1)
1621
        mp++;
1622
      else
1623
        mp = m;
1624

1625
      dl_harq_pid[m]     = dlsch->harq_ids[dl_subframe];
1626

1627
      if ((pucch_sel != 2)&&(pusch_flag == 0)) { // multiplexing
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        if ((SR_payload == 1)&&(all_ACKed == 1))
          dlsch_ACK[m] = 1;
        else
          dlsch_ACK[m] = 0;
1632
      }
1633

1634
      if (dl_harq_pid[m]<dlsch->Mdlharq) {
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        dlsch_harq_proc = dlsch->harq_processes[dl_harq_pid[m]];
#ifdef DEBUG_PHY_PROC
1637
        LOG_D(PHY,"[eNB %d][PDSCH %x/%d] subframe %d, status %d, round %d (mcs %d, rv %d, TBS %d)\n",eNB->Mod_id,
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              dlsch->rnti,dl_harq_pid[m],dl_subframe,
              dlsch_harq_proc->status,dlsch_harq_proc->round,
              dlsch->harq_processes[dl_harq_pid[m]]->mcs,
              dlsch->harq_processes[dl_harq_pid[m]]->rvidx,
              dlsch->harq_processes[dl_harq_pid[m]]->TBS);

        if (dlsch_harq_proc->status==DISABLED)
          LOG_E(PHY,"dlsch_harq_proc is disabled? \n");

1647
#endif
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        if ((dl_harq_pid[m]<dlsch->Mdlharq) &&
            (dlsch_harq_proc->status == ACTIVE)) {
          // dl_harq_pid of DLSCH is still active

          if ( dlsch_ACK[mp]==0) {
            // Received NAK
#ifdef DEBUG_PHY_PROC
1656
            LOG_D(PHY,"[eNB %d][PDSCH %x/%d] M = %d, m= %d, mp=%d NAK Received in round %d, requesting retransmission\n",eNB->Mod_id,
1657
                  dlsch->rnti,dl_harq_pid[m],M,m,mp,dlsch_harq_proc->round);
1658
#endif
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            if (dlsch_harq_proc->round == 0)
              ue_stats->dlsch_NAK_round0++;

            ue_stats->dlsch_NAK[dl_harq_pid[m]][dlsch_harq_proc->round]++;


            // then Increment DLSCH round index
            dlsch_harq_proc->round++;

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1670
            if (dlsch_harq_proc->round == dlsch->Mlimit) {
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              // This was the last round for DLSCH so reset round and increment l2_error counter
#ifdef DEBUG_PHY_PROC
1673
              LOG_W(PHY,"[eNB %d][PDSCH %x/%d] DLSCH retransmissions exhausted, dropping packet\n",eNB->Mod_id,
1674
                    dlsch->rnti,dl_harq_pid[m]);
1675
#endif
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#if defined(MESSAGE_CHART_GENERATOR_PHY)
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              MSC_LOG_EVENT(MSC_PHY_ENB, "0 HARQ DLSCH Failed RNTI %"PRIx16" round %u",
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                            dlsch->rnti,
                            dlsch_harq_proc->round);
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#endif
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              dlsch_harq_proc->round = 0;
              ue_stats->dlsch_l2_errors[dl_harq_pid[m]]++;
              dlsch_harq_proc->status = SCH_IDLE;
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              put_harq_pid_in_freelist(dlsch, dl_harq_pid[m]);
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              dlsch->harq_ids[dl_subframe] = dlsch->Mdlharq;
            }
          } else {
#ifdef DEBUG_PHY_PROC
1690
            LOG_D(PHY,"[eNB %d][PDSCH %x/%d] ACK Received in round %d, resetting process\n",eNB->Mod_id,
1691
                  dlsch->rnti,dl_harq_pid[m],dlsch_harq_proc->round);
1692
#endif
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            ue_stats->dlsch_ACK[dl_harq_pid[m]][dlsch_harq_proc->round]++;

            // Received ACK so set round to 0 and set dlsch_harq_pid IDLE
            dlsch_harq_proc->round  = 0;
            dlsch_harq_proc->status = SCH_IDLE;
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            put_harq_pid_in_freelist(dlsch, dl_harq_pid[m]);
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            dlsch->harq_ids[dl_subframe] = dlsch->Mdlharq;

            ue_stats->total_TBS = ue_stats->total_TBS +
1702
                                  eNB->dlsch[(uint8_t)UE_id][0]->harq_processes[dl_harq_pid[m]]->TBS;
1703 1704
            /*
              ue_stats->total_transmitted_bits = ue_stats->total_transmitted_bits +
1705
              eNB->dlsch[(uint8_t)UE_id][0]->harq_processes[dl_harq_pid[m]]->TBS;
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            */
          }

          // Do fine-grain rate-adaptation for DLSCH
          if (ue_stats->dlsch_NAK_round0 > dlsch->error_threshold) {
            if (ue_stats->dlsch_mcs_offset == 1)
              ue_stats->dlsch_mcs_offset=0;
            else
              ue_stats->dlsch_mcs_offset=-1;
          }

#ifdef DEBUG_PHY_PROC
          LOG_D(PHY,"[process_HARQ_feedback] Frame %d Setting round to %d for pid %d (subframe %d)\n",frame,
                dlsch_harq_proc->round,dl_harq_pid[m],subframe);
1720
#endif
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          // Clear NAK stats and adjust mcs offset
          // after measurement window timer expires
          if (ue_stats->dlsch_sliding_cnt == dlsch->ra_window_size) {
            if ((ue_stats->dlsch_mcs_offset == 0) && (ue_stats->dlsch_NAK_round0 < 2))
              ue_stats->dlsch_mcs_offset = 1;

            if ((ue_stats->dlsch_mcs_offset == 1) && (ue_stats->dlsch_NAK_round0 > 2))
              ue_stats->dlsch_mcs_offset = 0;

            if ((ue_stats->dlsch_mcs_offset == 0) && (ue_stats->dlsch_NAK_round0 > 2))
              ue_stats->dlsch_mcs_offset = -1;

            if ((ue_stats->dlsch_mcs_offset == -1) && (ue_stats->dlsch_NAK_round0 < 2))
              ue_stats->dlsch_mcs_offset = 0;

            ue_stats->dlsch_NAK_round0 = 0;
            ue_stats->dlsch_sliding_cnt = 0;
          }


        }
1743
      }
1744
    }
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  }
}

1748
void get_n1_pucch_eNB(PHY_VARS_eNB *eNB,
1749
		      eNB_rxtx_proc_t *proc,
1750 1751 1752 1753 1754 1755
                      uint8_t UE_id,
                      int16_t *n1_pucch0,
                      int16_t *n1_pucch1,
                      int16_t *n1_pucch2,
                      int16_t *n1_pucch3)
{
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1757
  LTE_DL_FRAME_PARMS *frame_parms=&eNB->frame_parms;
1758
  uint8_t nCCE0,nCCE1;
1759
  int sf;
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  int frame = proc->frame_rx;
  int subframe = proc->subframe_rx;
1762 1763

  if (frame_parms->frame_type == FDD ) {
1764
    sf = (subframe<4) ? (subframe+6) : (subframe-4);
1765

1766 1767
    if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[sf]>0) {
      *n1_pucch0 = frame_parms->pucch_config_common.n1PUCCH_AN + eNB->dlsch[(uint32_t)UE_id][0]->nCCE[sf];
1768
      *n1_pucch1 = -1;
1769
    } else {
1770 1771 1772
      *n1_pucch0 = -1;
      *n1_pucch1 = -1;
    }
1773
  } else {
1774

1775 1776 1777
    switch (frame_parms->tdd_config) {
    case 1:  // DL:S:UL:UL:DL:DL:S:UL:UL:DL
      if (subframe == 2) {  // ACK subframes 5 and 6
1778 1779
        /*  if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[6]>0) {
          nCCE1 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[6];
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          *n1_pucch1 = get_Np(frame_parms->N_RB_DL,nCCE1,1) + nCCE1 + frame_parms->pucch_config_common.n1PUCCH_AN;
          }
          else
          *n1_pucch1 = -1;*/

1785 1786
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[5]>0) {
          nCCE0 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[5];
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          *n1_pucch0 = get_Np(frame_parms->N_RB_DL,nCCE0,0) + nCCE0+ frame_parms->pucch_config_common.n1PUCCH_AN;
        } else
          *n1_pucch0 = -1;

        *n1_pucch1 = -1;
      } else if (subframe == 3) { // ACK subframe 9

1794 1795
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[9]>0) {
          nCCE0 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[9];
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          *n1_pucch0 = get_Np(frame_parms->N_RB_DL,nCCE0,0) + nCCE0 +frame_parms->pucch_config_common.n1PUCCH_AN;
        } else
          *n1_pucch0 = -1;

        *n1_pucch1 = -1;

      } else if (subframe == 7) { // ACK subframes 0 and 1
        //harq_ack[0].nCCE;
        //harq_ack[1].nCCE;
1805 1806
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[0]>0) {
          nCCE0 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[0];
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          *n1_pucch0 = get_Np(frame_parms->N_RB_DL,nCCE0,0) + nCCE0 + frame_parms->pucch_config_common.n1PUCCH_AN;
        } else
          *n1_pucch0 = -1;

        *n1_pucch1 = -1;
      } else if (subframe == 8) { // ACK subframes 4
        //harq_ack[4].nCCE;
1814 1815
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[4]>0) {
          nCCE0 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[4];
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          *n1_pucch0 = get_Np(frame_parms->N_RB_DL,nCCE0,0) + nCCE0 + frame_parms->pucch_config_common.n1PUCCH_AN;
        } else
          *n1_pucch0 = -1;

        *n1_pucch1 = -1;
      } else {
        LOG_D(PHY,"[eNB %d] frame %d: phy_procedures_lte.c: get_n1pucch, illegal subframe %d for tdd_config %d\n",
1823
              eNB->Mod_id,
1824 1825 1826
              frame,
              subframe,frame_parms->tdd_config);
        return;
1827
      }
1828

1829
      break;
1830

1831 1832
    case 3:  // DL:S:UL:UL:UL:DL:DL:DL:DL:DL
      if (subframe == 2) {  // ACK subframes 5,6 and 1 (S in frame-2), forget about n-11 for the moment (S-subframe)
1833 1834
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[6]>0) {
          nCCE1 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[6];
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          *n1_pucch1 = get_Np(frame_parms->N_RB_DL,nCCE1,1) + nCCE1 + frame_parms->pucch_config_common.n1PUCCH_AN;
        } else
          *n1_pucch1 = -1;

1839 1840
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[5]>0) {
          nCCE0 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[5];
1841 1842 1843 1844 1845
          *n1_pucch0 = get_Np(frame_parms->N_RB_DL,nCCE0,0) + nCCE0+ frame_parms->pucch_config_common.n1PUCCH_AN;
        } else
          *n1_pucch0 = -1;
      } else if (subframe == 3) { // ACK subframes 7 and 8
        LOG_D(PHY,"get_n1_pucch_eNB : subframe 3, subframe_tx[7] %d, subframe_tx[8] %d\n",
1846
              eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[7],eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[8]);
1847

1848 1849
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[8]>0) {
          nCCE1 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[8];
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          *n1_pucch1 = get_Np(frame_parms->N_RB_DL,nCCE1,1) + nCCE1 + frame_parms->pucch_config_common.n1PUCCH_AN;
          LOG_D(PHY,"nCCE1 %d, n1_pucch1 %d\n",nCCE1,*n1_pucch1);
        } else
          *n1_pucch1 = -1;

1855 1856
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[7]>0) {
          nCCE0 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[7];
1857 1858 1859 1860 1861
          *n1_pucch0 = get_Np(frame_parms->N_RB_DL,nCCE0,0) + nCCE0 +frame_parms->pucch_config_common.n1PUCCH_AN;
          LOG_D(PHY,"nCCE0 %d, n1_pucch0 %d\n",nCCE0,*n1_pucch0);
        } else
          *n1_pucch0 = -1;
      } else if (subframe == 4) { // ACK subframes 9 and 0
1862 1863
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[0]>0) {
          nCCE1 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[0];
1864 1865 1866 1867
          *n1_pucch1 = get_Np(frame_parms->N_RB_DL,nCCE1,1) + nCCE1 + frame_parms->pucch_config_common.n1PUCCH_AN;
        } else
          *n1_pucch1 = -1;

1868 1869
        if (eNB->dlsch[(uint32_t)UE_id][0]->subframe_tx[9]>0) {
          nCCE0 = eNB->dlsch[(uint32_t)UE_id][0]->nCCE[9];
1870 1871 1872 1873 1874
          *n1_pucch0 = get_Np(frame_parms->N_RB_DL,nCCE0,0) + nCCE0 +frame_parms->pucch_config_common.n1PUCCH_AN;
        } else
          *n1_pucch0 = -1;
      } else {
        LOG_D(PHY,"[eNB %d] Frame %d: phy_procedures_lte.c: get_n1pucch, illegal subframe %d for tdd_config %d\n",
1875
              eNB->Mod_id,frame,subframe,frame_parms->tdd_config);
1876
        return;
1877
      }
1878

1879
      break;
1880 1881
    }  // switch tdd_config

1882 1883 1884
    // Don't handle the case M>2
    *n1_pucch2 = -1;
    *n1_pucch3 = -1;
1885 1886 1887
  }
}

1888
void prach_procedures(PHY_VARS_eNB *eNB,uint8_t abstraction_flag)
1889
{
1890

1891
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
1892 1893 1894 1895
  uint16_t preamble_energy_list[64],preamble_delay_list[64];
  uint16_t preamble_max,preamble_energy_max;
  uint16_t i;
  int8_t UE_id;
1896 1897
  int subframe = eNB->proc.subframe_prach;
  int frame = eNB->proc.frame_prach;
1898
  uint8_t CC_id = eNB->CC_id;
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1900 1901
  memset(&preamble_energy_list[0],0,64*sizeof(uint16_t));
  memset(&preamble_delay_list[0],0,64*sizeof(uint16_t));
1902

1903
  if (abstraction_flag == 0) {
1904
    LOG_D(PHY,"[eNB %d][RAPROC] Frame %d, Subframe %d : PRACH RX Signal Power : %d dBm\n",eNB->Mod_id, 
1905
          frame,subframe,dB_fixed(signal_energy(&eNB->common_vars.rxdata[0][0][subframe*fp->samples_per_tti],512)) - eNB->rx_total_gain_dB);
1906

1907

1908
    rx_prach(eNB,
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             preamble_energy_list,
             preamble_delay_list,
             frame,
             0);
  } else {
    for (UE_id=0; UE_id<NB_UE_INST; UE_id++) {

1916
      LOG_D(PHY,"[RAPROC] UE_id %d (%p), generate_prach %d, UE RSI %d, eNB RSI %d preamble index %d\n",
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            UE_id,PHY_vars_UE_g[UE_id][CC_id],PHY_vars_UE_g[UE_id][CC_id]->generate_prach,
1918
            PHY_vars_UE_g[UE_id][CC_id]->frame_parms.prach_config_common.rootSequenceIndex,
1919
            fp->prach_config_common.rootSequenceIndex,
1920 1921
            PHY_vars_UE_g[UE_id][CC_id]->prach_PreambleIndex);

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1922
      if ((PHY_vars_UE_g[UE_id][CC_id]->generate_prach==1) &&
1923
          (PHY_vars_UE_g[UE_id][CC_id]->frame_parms.prach_config_common.rootSequenceIndex ==
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           fp->prach_config_common.rootSequenceIndex) ) {
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        preamble_energy_list[PHY_vars_UE_g[UE_id][CC_id]->prach_PreambleIndex] = 800;
        preamble_delay_list[PHY_vars_UE_g[UE_id][CC_id]->prach_PreambleIndex] = 5;

1928
      }
1929
    }
1930
  }
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  preamble_energy_max = preamble_energy_list[0];
  preamble_max = 0;

1935
  for (i=1; i<64; i++) {
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    if (preamble_energy_max < preamble_energy_list[i]) {
      preamble_energy_max = preamble_energy_list[i];
      preamble_max = i;
    }
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  }

#ifdef DEBUG_PHY_PROC
1943
  LOG_D(PHY,"[RAPROC] Most likely preamble %d, energy %d dB delay %d\n",
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        preamble_max,
        preamble_energy_list[preamble_max],
        preamble_delay_list[preamble_max]);
1947 1948
#endif

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1949
  if (preamble_energy_list[preamble_max] > 580) {
1950

1951
    UE_id = find_next_ue_index(eNB);
1952
 
1953
    if (UE_id>=0) {
1954
      eNB->UE_stats[(uint32_t)UE_id].UE_timing_offset = preamble_delay_list[preamble_max]&0x1FFF; //limit to 13 (=11+2) bits
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1956
      eNB->UE_stats[(uint32_t)UE_id].sector = 0;
1957
      LOG_D(PHY,"[eNB %d/%d][RAPROC] Frame %d, subframe %d Initiating RA procedure (UE_id %d) with preamble %d, energy %d.%d dB, delay %d\n",
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            eNB->Mod_id,
            eNB->CC_id,
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            frame,
            subframe,
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	    UE_id,
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            preamble_max,
            preamble_energy_max/10,
            preamble_energy_max%10,
            preamble_delay_list[preamble_max]);
1967

1968
      if (eNB->mac_enabled==1) {
1969 1970
        uint8_t update_TA=4;

1971
        switch (fp->N_RB_DL) {
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988
        case 6:
          update_TA = 16;
          break;

        case 25:
          update_TA = 4;
          break;

        case 50:
          update_TA = 2;
          break;

        case 100:
          update_TA = 1;
          break;
        }

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      mac_xface->initiate_ra_proc(eNB->Mod_id,
                                  eNB->CC_id,
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                                  frame,
                                  preamble_max,
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                                  preamble_delay_list[preamble_max]*update_TA,
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1994
				  0,subframe,0);
1995 1996
      }      

1997
    } else {
1998
      MSC_LOG_EVENT(MSC_PHY_ENB, "0 RA Failed add user, too many");
1999
      LOG_I(PHY,"[eNB %d][RAPROC] frame %d, subframe %d: Unable to add user, max user count reached\n",
2000
            eNB->Mod_id,frame, subframe);
2001
    }
2002 2003 2004
  }
}

2005
void pucch_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,int UE_id,int harq_pid,const uint8_t abstraction_flag) {
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2006

2007
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
2008
  uint8_t SR_payload = 0,*pucch_payload=NULL,pucch_payload0[2]= {0,0},pucch_payload1[2]= {0,0};
2009 2010 2011
  int16_t n1_pucch0,n1_pucch1,n1_pucch2,n1_pucch3;
  uint8_t do_SR = 0;
  uint8_t pucch_sel = 0;
2012
  int32_t metric0=0,metric1=0,metric0_SR=0;
2013 2014
  ANFBmode_t bundling_flag;
  PUCCH_FMT_t format;
2015 2016
  const int subframe = proc->subframe_rx;
  const int frame = proc->frame_rx;
2017

2018 2019 2020
  if ((eNB->dlsch[UE_id][0]) &&
      (eNB->dlsch[UE_id][0]->rnti>0) &&
      (eNB->ulsch[UE_id]->harq_processes[harq_pid]->subframe_scheduling_flag==0)) { 
2021

2022
      // check SR availability
2023 2024 2025
    do_SR = is_SR_subframe(eNB,proc,UE_id);
    //      do_SR = 0;
    
2026 2027
      // Now ACK/NAK
      // First check subframe_tx flag for earlier subframes
2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074
    get_n1_pucch_eNB(eNB,
		     proc,
		     UE_id,
		     &n1_pucch0,
		     &n1_pucch1,
		     &n1_pucch2,
		     &n1_pucch3);
    
    LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d, subframe %d Checking for PUCCH (%d,%d,%d,%d) SR %d\n",
	  eNB->Mod_id,eNB->dlsch[UE_id][0]->rnti,
	  frame,subframe,
	  n1_pucch0,n1_pucch1,n1_pucch2,n1_pucch3,do_SR);
    
    if ((n1_pucch0==-1) && (n1_pucch1==-1) && (do_SR==0)) {  // no TX PDSCH that have to be checked and no SR for this UE_id
    } else {
      // otherwise we have some PUCCH detection to do
      
      // Null out PUCCH PRBs for noise measurement
      switch(fp->N_RB_UL) {
      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;
      }
      
      if (do_SR == 1) {
	eNB->UE_stats[UE_id].sr_total++;
2075

2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086
	if (abstraction_flag == 0)
	  metric0_SR = rx_pucch(eNB,
				pucch_format1,
				UE_id,
				eNB->scheduling_request_config[UE_id].sr_PUCCH_ResourceIndex,
				0, // n2_pucch
				0, // shortened format, should be use_srs flag, later
				&SR_payload,
				subframe,
				PUCCH1_THRES);
	
2087
#ifdef PHY_ABSTRACTION
2088 2089 2090 2091 2092 2093 2094 2095 2096 2097
	else {
	  metric0_SR = rx_pucch_emul(eNB,
				     UE_id,
				     pucch_format1,
				     0,
				     &SR_payload);
	  LOG_D(PHY,"[eNB %d][SR %x] Frame %d subframe %d Checking SR (UE SR %d/%d)\n",eNB->Mod_id,
		eNB->ulsch[UE_id]->rnti,frame,subframe,SR_payload,eNB->scheduling_request_config[UE_id].sr_PUCCH_ResourceIndex);
	}
	
2098
#endif
2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121
	
	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,
		eNB->ulsch[UE_id]->rnti,frame,subframe);
	  eNB->UE_stats[UE_id].sr_received++;
	  
	  if (eNB->first_sr[UE_id] == 1) { // this is the first request for uplink after Connection Setup, so clear HARQ process 0 use for Msg4
	    /* is this test necessary? */
	    if (eNB->dlsch[UE_id][0]->harq_processes[0]->status != SCH_IDLE)
	      put_harq_pid_in_freelist(eNB->dlsch[UE_id][0], 0);
	    eNB->first_sr[UE_id] = 0;
	    eNB->dlsch[UE_id][0]->harq_processes[0]->round=0;
	    eNB->dlsch[UE_id][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[UE_id]->rnti,frame,subframe);
	  }
	  
	  if (eNB->mac_enabled==1) {
	    mac_xface->SR_indication(eNB->Mod_id,
				     eNB->CC_id,
				     frame,
				     eNB->dlsch[UE_id][0]->rnti,subframe);
2122
	  }
2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158
	}
      }// do_SR==1
      
      if ((n1_pucch0==-1) && (n1_pucch1==-1)) { // just check for SR
      } else if (fp->frame_type==FDD) { // FDD
	// if SR was detected, use the n1_pucch from SR, else use n1_pucch0
	//          n1_pucch0 = (SR_payload==1) ? eNB->scheduling_request_config[UE_id].sr_PUCCH_ResourceIndex:n1_pucch0;
	
	LOG_D(PHY,"Demodulating PUCCH for ACK/NAK: n1_pucch0 %d (%d), SR_payload %d\n",n1_pucch0,eNB->scheduling_request_config[UE_id].sr_PUCCH_ResourceIndex,SR_payload);
	
	if (abstraction_flag == 0) {
	  
	  
	  
	  metric0 = rx_pucch(eNB,
			     pucch_format1a,
			     UE_id,
			     (uint16_t)n1_pucch0,
			     0, //n2_pucch
			     0, // shortened format
			     pucch_payload0,
			     subframe,
			     PUCCH1a_THRES);
	  
	  if (metric0 < metric0_SR)
	    metric0=rx_pucch(eNB,
			     pucch_format1a,
			     UE_id,
			     eNB->scheduling_request_config[UE_id].sr_PUCCH_ResourceIndex,
			     0, //n2_pucch
			     0, // shortened format
			     pucch_payload0,
			     subframe,
			     PUCCH1a_THRES);
	}
	else {
2159
#ifdef PHY_ABSTRACTION
2160 2161 2162 2163 2164
	  metric0 = rx_pucch_emul(eNB,UE_id,
				  pucch_format1a,
				  0,
				  pucch_payload0,
				  subframe);
2165
#endif
2166 2167
	}
	
2168
#ifdef DEBUG_PHY_PROC
2169 2170 2171 2172 2173
	LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d pucch1a (FDD) payload %d (metric %d)\n",
	      eNB->Mod_id,
	      eNB->dlsch[UE_id][0]->rnti,
	      frame,subframe,
	      pucch_payload0[0],metric0);
2174
#endif
2175 2176
	
	process_HARQ_feedback(UE_id,eNB,proc,
2177 2178 2179 2180
                                0,// pusch_flag
                                pucch_payload0,
                                2,
                                SR_payload);
2181

2182 2183
        } // FDD
        else {  //TDD
2184

2185
          bundling_flag = eNB->pucch_config_dedicated[UE_id].tdd_AckNackFeedbackMode;
2186

2187
          // fix later for 2 TB case and format1b
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2188

2189
          if ((fp->frame_type==FDD) ||
2190
              (bundling_flag==bundling)    ||
2191
              ((fp->frame_type==TDD)&&(fp->tdd_config==1)&&((subframe!=2)||(subframe!=7)))) {
2192
            format = pucch_format1a;
2193
	  } else {
2194
            format = pucch_format1b;
2195
	  }
2196

2197 2198 2199
          // if SR was detected, use the n1_pucch from SR
          if (SR_payload==1) {
#ifdef DEBUG_PHY_PROC
2200
            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,
2201
                  eNB->dlsch[UE_id][0]->rnti,
2202 2203 2204
                  frame,subframe,
                  n1_pucch0,n1_pucch1,n1_pucch2,n1_pucch3,format);
#endif
2205

2206
            if (abstraction_flag == 0)
2207
              metric0_SR = rx_pucch(eNB,
2208 2209
				    format,
				    UE_id,
2210
				    eNB->scheduling_request_config[UE_id].sr_PUCCH_ResourceIndex,
2211 2212 2213 2214 2215 2216
				    0, //n2_pucch
				    0, // shortened format
				    pucch_payload0,
				    subframe,
				    PUCCH1a_THRES);
            else {
2217
#ifdef PHY_ABSTRACTION
2218
              metric0 = rx_pucch_emul(eNB,UE_id,
2219 2220 2221 2222
                                      format,
                                      0,
                                      pucch_payload0,
                                      subframe);
2223
#endif
2224 2225 2226
            }
          } else { //using n1_pucch0/n1_pucch1 resources
#ifdef DEBUG_PHY_PROC
2227
            LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d Checking ACK/NAK (%d,%d,%d,%d) format %d\n",eNB->Mod_id,
2228
                  eNB->dlsch[UE_id][0]->rnti,
2229 2230 2231 2232 2233
                  frame,subframe,
                  n1_pucch0,n1_pucch1,n1_pucch2,n1_pucch3,format);
#endif
            metric0=0;
            metric1=0;
2234

2235 2236 2237
            // Check n1_pucch0 metric
            if (n1_pucch0 != -1) {
              if (abstraction_flag == 0)
2238
                metric0 = rx_pucch(eNB,
2239 2240 2241 2242 2243 2244 2245 2246 2247
                                   format,
                                   UE_id,
                                   (uint16_t)n1_pucch0,
                                   0, // n2_pucch
                                   0, // shortened format
                                   pucch_payload0,
                                   subframe,
                                   PUCCH1a_THRES);
              else {
2248
#ifdef PHY_ABSTRACTION
2249
                metric0 = rx_pucch_emul(eNB,UE_id,
2250 2251 2252 2253
                                        format,
                                        0,
                                        pucch_payload0,
                                        subframe);
2254
#endif
2255 2256
              }
            }
2257

2258 2259 2260
            // Check n1_pucch1 metric
            if (n1_pucch1 != -1) {
              if (abstraction_flag == 0)
2261
                metric1 = rx_pucch(eNB,
2262 2263 2264 2265 2266 2267 2268 2269 2270 2271
                                   format,
                                   UE_id,
                                   (uint16_t)n1_pucch1,
                                   0, //n2_pucch
                                   0, // shortened format
                                   pucch_payload1,
                                   subframe,
                                   PUCCH1a_THRES);
              else {
#ifdef PHY_ABSTRACTION
2272
                metric1 = rx_pucch_emul(eNB,UE_id,
2273 2274 2275 2276
                                        format,
                                        1,
                                        pucch_payload1,
                                        subframe);
2277

2278

2279 2280 2281 2282
#endif
              }
            }
          }
2283

2284 2285
          if (SR_payload == 1) {
            pucch_payload = pucch_payload0;
2286

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            if (bundling_flag == bundling)
              pucch_sel = 2;
          } else if (bundling_flag == multiplexing) { // multiplexing + no SR
            pucch_payload = (metric1>metric0) ? pucch_payload1 : pucch_payload0;
            pucch_sel     = (metric1>metric0) ? 1 : 0;
          } else { // bundling + no SR
            if (n1_pucch1 != -1)
              pucch_payload = pucch_payload1;
            else if (n1_pucch0 != -1)
              pucch_payload = pucch_payload0;

            pucch_sel = 2;  // indicate that this is a bundled ACK/NAK
          }
2300 2301

#ifdef DEBUG_PHY_PROC
2302
          LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d ACK/NAK metric 0 %d, metric 1 %d, sel %d, (%d,%d)\n",eNB->Mod_id,
2303
                eNB->dlsch[UE_id][0]->rnti,
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                frame,subframe,
                metric0,metric1,pucch_sel,pucch_payload[0],pucch_payload[1]);
2306
#endif
2307
          process_HARQ_feedback(UE_id,eNB,proc,
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                                0,// pusch_flag
                                pucch_payload,
                                pucch_sel,
                                SR_payload);
        }
2313
      }
2314

2315 2316
    }
}
2317

2318
void cba_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,int UE_id,int harq_pid,const uint8_t abstraction_flag) {
2319

2320 2321
  uint8_t access_mode;
  int num_active_cba_groups;
2322 2323
  const int subframe = proc->subframe_rx;
  const int frame = proc->frame_rx;
2324 2325
  uint16_t rnti=0;
  int ret=0;
2326
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
2327

2328
  num_active_cba_groups = eNB->ulsch[UE_id]->num_active_cba_groups;
2329
  
2330
  if ((eNB->ulsch[UE_id]) &&
2331
      (num_active_cba_groups > 0) &&
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      (eNB->ulsch[UE_id]->cba_rnti[UE_id%num_active_cba_groups]>0) &&
      (eNB->ulsch[UE_id]->harq_processes[harq_pid]->subframe_cba_scheduling_flag==1)) {
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    rnti=0;
    
#ifdef DEBUG_PHY_PROC
    LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d Checking PUSCH/ULSCH CBA Reception for UE %d with cba rnti %x mode %s\n",
2338
	  eNB->Mod_id,harq_pid,
2339
	  frame,subframe,
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	  UE_id, (uint16_t)eNB->ulsch[UE_id]->cba_rnti[UE_id%num_active_cba_groups],mode_string[eNB->UE_stats[UE_id].mode]);
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#endif
    
    if (abstraction_flag==0) {
2344
      rx_ulsch(eNB,proc,
2345
	       eNB->UE_stats[UE_id].sector,  // this is the effective sector id
2346
	       UE_id,
2347
	       eNB->ulsch,
2348 2349 2350 2351 2352
	       0);
    }
    
#ifdef PHY_ABSTRACTION
    else {
2353
      rx_ulsch_emul(eNB,proc,
2354
		    subframe,
2355
		    eNB->UE_stats[UE_id].sector,  // this is the effective sector id
2356
		    UE_id);
2357 2358 2359 2360 2361
    }
    
#endif
    
    if (abstraction_flag == 0) {
2362
      ret = ulsch_decoding(eNB,proc,
2363 2364
			   UE_id,
			   0, // control_only_flag
2365 2366
			   eNB->ulsch[UE_id]->harq_processes[harq_pid]->V_UL_DAI,
			   eNB->ulsch[UE_id]->harq_processes[harq_pid]->nb_rb>20 ? 1 : 0);
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    }
    
#ifdef PHY_ABSTRACTION
    else {
2371
      ret = ulsch_decoding_emul(eNB,
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				UE_id,
				&rnti);
    }
    
#endif
    
2378
    if (eNB->ulsch[UE_id]->harq_processes[harq_pid]->cqi_crc_status == 1) {
2379 2380
#ifdef DEBUG_PHY_PROC
      
2381
      print_CQI(eNB->ulsch[UE_id]->harq_processes[harq_pid]->o,eNB->ulsch[UE_id]->harq_processes[harq_pid]->uci_format,0,fp->N_RB_DL);
2382 2383
#endif
      access_mode = UNKNOWN_ACCESS;
2384 2385 2386
      extract_CQI(eNB->ulsch[UE_id]->harq_processes[harq_pid]->o,
		  eNB->ulsch[UE_id]->harq_processes[harq_pid]->uci_format,
		  &eNB->UE_stats[UE_id],
2387
		  fp->N_RB_DL,
2388
		  &rnti, &access_mode);
2389
      eNB->UE_stats[UE_id].rank = eNB->ulsch[UE_id]->harq_processes[harq_pid]->o_RI[0];
2390 2391
    }
    
2392 2393
      eNB->ulsch[UE_id]->harq_processes[harq_pid]->subframe_cba_scheduling_flag=0;
      eNB->ulsch[UE_id]->harq_processes[harq_pid]->status= SCH_IDLE;
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      if ((num_active_cba_groups > 0) &&
          (UE_id + num_active_cba_groups < NUMBER_OF_UE_MAX) &&
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          (eNB->ulsch[UE_id+num_active_cba_groups]->cba_rnti[UE_id%num_active_cba_groups] > 0 ) &&
          (eNB->ulsch[UE_id+num_active_cba_groups]->num_active_cba_groups> 0)) {
2399 2400
#ifdef DEBUG_PHY_PROC
        LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d UE %d harq_pid %d resetting the subframe_scheduling_flag for Ue %d cba groups %d members\n",
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              eNB->Mod_id,harq_pid,frame,subframe,UE_id,harq_pid,
2402
              UE_id+num_active_cba_groups, UE_id%eNB->ulsch[UE_id]->num_active_cba_groups);
2403
#endif
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        eNB->ulsch[UE_id+num_active_cba_groups]->harq_processes[harq_pid]->subframe_cba_scheduling_flag=1;
        eNB->ulsch[UE_id+num_active_cba_groups]->harq_processes[harq_pid]->status= CBA_ACTIVE;
        eNB->ulsch[UE_id+num_active_cba_groups]->harq_processes[harq_pid]->TBS=eNB->ulsch[UE_id]->harq_processes[harq_pid]->TBS;
2407
      }
2408

2409
      if (ret == (1+MAX_TURBO_ITERATIONS)) {
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        eNB->UE_stats[UE_id].ulsch_round_errors[harq_pid][eNB->ulsch[UE_id]->harq_processes[harq_pid]->round]++;
        eNB->ulsch[UE_id]->harq_processes[harq_pid]->phich_active = 1;
        eNB->ulsch[UE_id]->harq_processes[harq_pid]->phich_ACK = 0;
        eNB->ulsch[UE_id]->harq_processes[harq_pid]->round++;
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      } // ulsch in error
      else {
        LOG_D(PHY,"[eNB %d][PUSCH %d] Frame %d subframe %d ULSCH received, setting round to 0, PHICH ACK\n",
2417
              eNB->Mod_id,harq_pid,
2418
              frame,subframe);
2419

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        eNB->ulsch[UE_id]->harq_processes[harq_pid]->phich_active = 1;
        eNB->ulsch[UE_id]->harq_processes[harq_pid]->phich_ACK = 1;
        eNB->ulsch[UE_id]->harq_processes[harq_pid]->round = 0;
        eNB->UE_stats[UE_id].ulsch_consecutive_errors = 0;
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#ifdef DEBUG_PHY_PROC
#ifdef DEBUG_ULSCH
        LOG_D(PHY,"[eNB] Frame %d, Subframe %d : ULSCH SDU (RX harq_pid %d) %d bytes:",
              frame,subframe,
2428
              harq_pid,eNB->ulsch[UE_id]->harq_processes[harq_pid]->TBS>>3);
2429

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        for (j=0; j<eNB->ulsch[UE_id]->harq_processes[harq_pid]->TBS>>3; j++)
          LOG_T(PHY,"%x.",eNB->ulsch[UE_id]->harq_processes[harq_pid]->b[j]);
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        LOG_T(PHY,"\n");
#endif
#endif

        if (access_mode > UNKNOWN_ACCESS) {
          LOG_D(PHY,"[eNB %d] Frame %d, Subframe %d : received ULSCH SDU from CBA transmission, UE (%d,%x), CBA (group %d, rnti %x)\n",
2439
                eNB->Mod_id, frame,subframe,
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                UE_id, eNB->ulsch[UE_id]->rnti,
                UE_id % eNB->ulsch[UE_id]->num_active_cba_groups, eNB->ulsch[UE_id]->cba_rnti[UE_id%num_active_cba_groups]);
2442

2443
          // detect if there is a CBA collision
2444 2445 2446
          if (eNB->cba_last_reception[UE_id%num_active_cba_groups] == 0 ) {
            mac_xface->rx_sdu(eNB->Mod_id,
                              eNB->CC_id,
2447
                              frame,subframe,
2448 2449 2450
                              eNB->ulsch[UE_id]->rnti,
                              eNB->ulsch[UE_id]->harq_processes[harq_pid]->b,
                              eNB->ulsch[UE_id]->harq_processes[harq_pid]->TBS>>3,
2451 2452 2453
                              harq_pid,
                              NULL);

2454
            eNB->cba_last_reception[UE_id%num_active_cba_groups]+=1;//(subframe);
2455
          } else {
2456
            if (eNB->cba_last_reception[UE_id%num_active_cba_groups] == 1 )
2457
              LOG_N(PHY,"[eNB%d] Frame %d subframe %d : first CBA collision detected \n ",
2458
                    eNB->Mod_id,frame,subframe);
2459

2460
            LOG_N(PHY,"[eNB%d] Frame %d subframe %d : CBA collision set SR for UE %d in group %d \n ",
2461 2462
                  eNB->Mod_id,frame,subframe,
                  eNB->cba_last_reception[UE_id%num_active_cba_groups],UE_id%num_active_cba_groups );
2463

2464
            eNB->cba_last_reception[UE_id%num_active_cba_groups]+=1;
2465

2466 2467
            mac_xface->SR_indication(eNB->Mod_id,
                                     eNB->CC_id,
2468
                                     frame,
2469
                                     eNB->dlsch[UE_id][0]->rnti,subframe);
2470
          }
2471 2472 2473
        } // UNKNOWN_ACCESS
      } // ULSCH CBA not in error
  }
2474

2475
}
2476

2477

2478
void phy_procedures_eNB_common_RX(PHY_VARS_eNB *eNB,const uint8_t abstraction_flag) {
2479 2480 2481 2482 2483

  int i,l;
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
  void *rxp[fp->nb_antennas_rx]; 
  unsigned int rxs;
2484
  eNB_proc_t *proc = &eNB->proc;
2485 2486
  int subframe = proc->subframe_rx;
  int frame = proc->frame_rx;
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  int prach_rx;

  uint16_t packet_type;
  uint32_t symbol_number;
  uint32_t symbol_mask, symbol_mask_full;
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  struct timespec time_req, time_rem;  
  time_req.tv_sec = 0;
  time_req.tv_nsec = 300000;
  
2498 2499 2500
  if (subframe==9) { 
    subframe=0;
    frame++;
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    frame&=1023;
2502 2503
  } else {
		subframe++;
2504
  }
2505
  
2506 2507
  //  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_COMMON_RX,1);
  start_meas(&eNB->phy_proc_rx);
2508

2509
#ifdef DEBUG_PHY_PROC
2510
  LOG_D(PHY,"[eNB %d] Frame %d: Doing phy_procedures_eNB_RX(%d)\n",eNB->Mod_id,frame, subframe);
2511 2512 2513
#endif

  if (abstraction_flag==0) { // grab signal in chunks of 500 us (1 slot)
2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535
		
    if ((eNB->node_function == NGFI_RRU_IF4) || 
	      (eNB->node_function == eNodeB_3GPP)) { // acquisition from RF and front-end processing

	    for (i=0; i<fp->nb_antennas_rx; i++)
	      rxp[i] = (void*)&eNB->common_vars.rxdata[0][i][subframe*fp->samples_per_tti];

      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 1 );
      rxs = eNB->rfdevice.trx_read_func(&eNB->rfdevice,
			  	                              &proc->timestamp_rx,
		  	 	                              rxp,
				                                fp->samples_per_tti,
				                                fp->nb_antennas_rx);
      proc->frame_rx    = (proc->timestamp_rx / (fp->samples_per_tti*10))&1023;
      proc->subframe_rx = (proc->timestamp_rx / fp->samples_per_tti)%10;

      if (proc->first_rx == 0) {
        AssertFatal(proc->subframe_rx == subframe, "Received Timestamp doesn't correspond to the time we think it is (proc->subframe_rx %d, subframe %d)",proc->subframe_rx,subframe);
        AssertFatal(proc->frame_rx == frame, "Received Timestamp doesn't correspond to the time we think it is (proc->frame_rx %d frame %d)",proc->frame_rx,frame);
      } else {
        proc->first_rx = 0;
			}
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      //      printf("timestamp_rx %lu, frame %d(%d), subframe %d(%d)\n",proc->timestamp_rx,proc->frame_rx,frame,proc->subframe_rx,subframe);
2538

2539
      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
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      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX_ENB, proc->frame_rx );
      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_RX_ENB, proc->subframe_rx );
2542

2543 2544
      if (rxs != fp->samples_per_tti)
        exit_fun( "problem receiving samples" );
2545
	
2546 2547 2548 2549
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 0 );

      // now do common RX processing for first slot in subframe
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_SLOT_FEP,1);
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      remove_7_5_kHz(eNB,proc->subframe_rx<<1);
      remove_7_5_kHz(eNB,1+(proc->subframe_rx<<1));
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      for (l=0; l<fp->symbols_per_tti/2; l++) {
        slot_fep_ul(fp,
                    &eNB->common_vars,
                    l,
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                    proc->subframe_rx<<1,
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                    0,
                    0
                    );
        slot_fep_ul(fp,
                    &eNB->common_vars,
                    l,
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                    1+(proc->subframe_rx<<1),
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                    0,
                    0
                    );
      }
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    	VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_SLOT_FEP,0);

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      if (eNB->node_function == NGFI_RRU_IF4 && is_prach_subframe(fp, proc->frame_rx, proc->subframe_rx)<=0) {
2571

2572
			  /// **** send_IF4 of rxdataF to RCC (no prach now) **** ///
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        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF4, 1 );   
        // send_IF4();
        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF4, 0 );   
        
2578 2579
      }

2580 2581
      /// **** send_IF4 of prach to RCC **** /// done in prach thread (below)
      // check if we have to detect PRACH first
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      if (is_prach_subframe(fp,proc->frame_rx,proc->subframe_rx)>0) {
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        // wake up thread for PRACH RX
        if (pthread_mutex_lock(&proc->mutex_prach) != 0) {
          LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB PRACH thread %d (IC %d)\n", proc->instance_cnt_prach );
          exit_fun( "error locking mutex_prach" );
          return;
		    }
		
        int cnt_prach = ++proc->instance_cnt_prach;
        // set timing for prach thread
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        proc->frame_prach = proc->frame_rx;
        proc->subframe_prach = proc->subframe_rx;
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        pthread_mutex_unlock( &proc->mutex_prach );
		
        if (cnt_prach == 0) {
          // the thread was presumably waiting where it should and can now be woken up
          if (pthread_cond_signal(&proc->cond_prach) != 0) {
            LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB PRACH thread %d\n", proc->thread_index);
            exit_fun( "ERROR pthread_cond_signal" );
            return;
          }
        } else {
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          LOG_W( PHY,"[eNB] Frame %d Subframe %d, eNB PRACH thread busy (IC %d)!!\n", proc->frame_rx,proc->subframe_rx,cnt_prach);
2606 2607 2608
          exit_fun( "PRACH thread busy" );
          return;
        }
2609
      }
2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620
    
    } else if (eNB->node_function == NGFI_RCC_IF4) {
      /// **** recv_IF4 of rxdataF from RRU **** ///
      /// **** recv_IF4 of prachF from RRU **** ///
      // get frame/subframe information from IF4 interface
      // timed loop (200 us)

      symbol_mask = 0;
      symbol_mask_full = (1<<fp->symbols_per_tti)-1;
      prach_rx = 0;

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      // Block from loop while testing
2622 2623 2624
      symbol_mask = symbol_mask_full;
      nanosleep(&time_req, &time_rem);
         
2625
      do {
2626
        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF4, 1 );   
2627
        //recv_IF4(eNB, proc, &packet_type, &symbol_number);
2628
        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF4, 0 );   
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2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644
        if (packet_type == IF4_PULFFT) {
          symbol_mask = symbol_mask | (1<<symbol_number);     
                       
        } else if (is_prach_subframe(fp,frame,subframe)>0 && packet_type == PRACH) {
          // wake up thread for PRACH RX
          prach_rx = 1;

          if (pthread_mutex_lock(&proc->mutex_prach) != 0) {
            LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB PRACH thread %d (IC %d)\n", proc->instance_cnt_prach );
            exit_fun( "error locking mutex_prach" );
            return;
		      }
		
          int cnt_prach = ++proc->instance_cnt_prach;
          // set timing for prach thread
Raymond Knopp's avatar
Raymond Knopp committed
2645 2646
          proc->frame_prach = proc->frame_rx;
          proc->subframe_prach = proc->subframe_rx;
2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662

          pthread_mutex_unlock( &proc->mutex_prach );
		
          if (cnt_prach == 0) {
            // the thread was presumably waiting where it should and can now be woken up
            if (pthread_cond_signal(&proc->cond_prach) != 0) {
              LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB PRACH thread %d\n", proc->thread_index);
              exit_fun( "ERROR pthread_cond_signal" );
              return;
            }
          } else {
            LOG_W( PHY,"[eNB] Frame %d, eNB PRACH thread busy!!\n", frame);
            exit_fun( "PRACH thread busy" );
            return;
          }
        }
2663

2664
      } while( (symbol_mask != symbol_mask_full) && (prach_rx == 0));    
2665

2666 2667 2668 2669
      // Tobi aka mr monaco: ETH
		  
    } else { // should not get here
      AssertFatal(1==0, "Unknown eNB->node_function %d",eNB->node_function);
2670
    }
2671

2672
  } else { // grab transport channel information from network interface
2673 2674

  }
2675

2676 2677
}

2678

2679
void phy_procedures_eNB_uespec_RX(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,const uint8_t abstraction_flag,const relaying_type_t r_type)
2680
{
2681
  //RX processing for ue-specific resources (i
2682
  UNUSED(r_type);
2683
  uint32_t ret=0,i,j,k;
2684 2685 2686 2687 2688
  uint32_t harq_pid, harq_idx, round;
  uint8_t nPRS;
  int sync_pos;
  uint16_t rnti=0;
  uint8_t access_mode;
2689
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
2690

2691 2692
  const int subframe = proc->subframe_rx;
  const int frame = proc->frame_rx;
2693

2694
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_RX,1);
2695
  start_meas(&eNB->phy_proc_rx);
2696
#ifdef DEBUG_PHY_PROC
2697
  LOG_D(PHY,"[eNB %d] Frame %d: Doing phy_procedures_eNB_RX(%d)\n",eNB->Mod_id,frame, subframe);
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Lionel Gauthier committed
2698
#endif
2699 2700


2701 2702 2703 2704
  eNB->rb_mask_ul[0]=0;
  eNB->rb_mask_ul[1]=0;
  eNB->rb_mask_ul[2]=0;
  eNB->rb_mask_ul[3]=0;
2705 2706 2707



2708
  // Check for active processes in current subframe
2709
  harq_pid = subframe2harq_pid(fp,
2710 2711 2712 2713
                               frame,subframe);

  // reset the cba flag used for collision detection
  for (i=0; i < NUM_MAX_CBA_GROUP; i++) {
2714
    eNB->cba_last_reception[i]=0;
2715 2716 2717 2718 2719
  }

  // Do PUCCH processing first

  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
2720
    pucch_procedures(eNB,proc,i,harq_pid,abstraction_flag);
2721
  }
2722

2723
  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
2724

2725
    // check for Msg3
2726
    if (eNB->mac_enabled==1) {
2727
      if (eNB->UE_stats[i].mode == RA_RESPONSE) {
2728
	process_Msg3(eNB,proc,i,harq_pid);
2729 2730
      }
    }
2731 2732


2733 2734 2735
    eNB->pusch_stats_rb[i][(frame*10)+subframe] = -63;
    eNB->pusch_stats_round[i][(frame*10)+subframe] = 0;
    eNB->pusch_stats_mcs[i][(frame*10)+subframe] = -63;
2736

2737 2738 2739
    if ((eNB->ulsch[i]) &&
        (eNB->ulsch[i]->rnti>0) &&
        (eNB->ulsch[i]->harq_processes[harq_pid]->subframe_scheduling_flag==1)) {
2740
      // UE is has ULSCH scheduling
2741
      round = eNB->ulsch[i]->harq_processes[harq_pid]->round;
2742
 
2743
      for (int rb=0;
2744
           rb<=eNB->ulsch[i]->harq_processes[harq_pid]->nb_rb;
2745
	   rb++) {
2746
	int rb2 = rb+eNB->ulsch[i]->harq_processes[harq_pid]->first_rb;
2747
	eNB->rb_mask_ul[rb2>>5] |= (1<<(rb2&31));
2748
      }
2749

2750

2751
      if (eNB->ulsch[i]->Msg3_flag == 1) {
2752
        LOG_D(PHY,"[eNB %d] frame %d, subframe %d: Scheduling ULSCH Reception for Msg3 in Sector %d\n",
2753
              eNB->Mod_id,
2754 2755
              frame,
              subframe,
2756
              eNB->UE_stats[i].sector);
2757 2758
	VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_ULSCH_MSG3,1);
      } else {
2759

2760
        LOG_D(PHY,"[eNB %d] frame %d, subframe %d: Scheduling ULSCH Reception for UE %d Mode %s\n",
2761
              eNB->Mod_id,
2762 2763 2764
              frame,
              subframe,
              i,
2765
              mode_string[eNB->UE_stats[i].mode]);
2766
      }
2767 2768


2769
      nPRS = fp->pusch_config_common.ul_ReferenceSignalsPUSCH.nPRS[subframe<<1];
2770

2771
      eNB->ulsch[i]->cyclicShift = (eNB->ulsch[i]->harq_processes[harq_pid]->n_DMRS2 + fp->pusch_config_common.ul_ReferenceSignalsPUSCH.cyclicShift +
2772
          nPRS)%12;
2773

2774
      if (fp->frame_type == FDD ) {
2775
        int sf = (subframe<4) ? (subframe+6) : (subframe-4);
2776

2777 2778
        if (eNB->dlsch[i][0]->subframe_tx[sf]>0) { // we have downlink transmission
          eNB->ulsch[i]->harq_processes[harq_pid]->O_ACK = 1;
2779
        } else {
2780
          eNB->ulsch[i]->harq_processes[harq_pid]->O_ACK = 0;
2781
        }
2782
      }
2783

2784 2785
      LOG_D(PHY,
            "[eNB %d][PUSCH %d] Frame %d Subframe %d Demodulating PUSCH: dci_alloc %d, rar_alloc %d, round %d, first_rb %d, nb_rb %d, mcs %d, TBS %d, rv %d, cyclic_shift %d (n_DMRS2 %d, cyclicShift_common %d, nprs %d), O_ACK %d \n",
2786
            eNB->Mod_id,harq_pid,frame,subframe,
2787 2788 2789 2790 2791 2792 2793 2794 2795 2796
            eNB->ulsch[i]->harq_processes[harq_pid]->dci_alloc,
            eNB->ulsch[i]->harq_processes[harq_pid]->rar_alloc,
            eNB->ulsch[i]->harq_processes[harq_pid]->round,
            eNB->ulsch[i]->harq_processes[harq_pid]->first_rb,
            eNB->ulsch[i]->harq_processes[harq_pid]->nb_rb,
            eNB->ulsch[i]->harq_processes[harq_pid]->mcs,
            eNB->ulsch[i]->harq_processes[harq_pid]->TBS,
            eNB->ulsch[i]->harq_processes[harq_pid]->rvidx,
            eNB->ulsch[i]->cyclicShift,
            eNB->ulsch[i]->harq_processes[harq_pid]->n_DMRS2,
2797
            fp->pusch_config_common.ul_ReferenceSignalsPUSCH.cyclicShift,
2798
            nPRS,
2799 2800 2801 2802
            eNB->ulsch[i]->harq_processes[harq_pid]->O_ACK);
      eNB->pusch_stats_rb[i][(frame*10)+subframe] = eNB->ulsch[i]->harq_processes[harq_pid]->nb_rb;
      eNB->pusch_stats_round[i][(frame*10)+subframe] = eNB->ulsch[i]->harq_processes[harq_pid]->round;
      eNB->pusch_stats_mcs[i][(frame*10)+subframe] = eNB->ulsch[i]->harq_processes[harq_pid]->mcs;
2803
      start_meas(&eNB->ulsch_demodulation_stats);
2804

2805
      if (abstraction_flag==0) {
2806
        rx_ulsch(eNB,proc,
2807
                 eNB->UE_stats[i].sector,  // this is the effective sector id
2808
                 i,
2809
                 eNB->ulsch,
2810 2811
                 0);
      }
2812

2813 2814
#ifdef PHY_ABSTRACTION
      else {
2815
        rx_ulsch_emul(eNB,proc,
2816
                      subframe,
2817
                      eNB->UE_stats[i].sector,  // this is the effective sector id
2818 2819
                      i);
      }
2820

2821
#endif
2822
      stop_meas(&eNB->ulsch_demodulation_stats);
2823

2824

2825
      start_meas(&eNB->ulsch_decoding_stats);
2826

2827
      if (abstraction_flag == 0) {
2828
        ret = ulsch_decoding(eNB,proc,
2829 2830
                             i,
                             0, // control_only_flag
2831 2832
                             eNB->ulsch[i]->harq_processes[harq_pid]->V_UL_DAI,
			     eNB->ulsch[i]->harq_processes[harq_pid]->nb_rb>20 ? 1 : 0);
2833
      }
2834

2835 2836
#ifdef PHY_ABSTRACTION
      else {
2837
        ret = ulsch_decoding_emul(eNB,proc,
2838 2839 2840
                                  i,
                                  &rnti);
      }
2841

2842
#endif
2843
      stop_meas(&eNB->ulsch_decoding_stats);
2844

2845
      LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d RNTI %x RX power (%d,%d) RSSI (%d,%d) N0 (%d,%d) dB ACK (%d,%d), decoding iter %d\n",
2846
            eNB->Mod_id,harq_pid,
2847
            frame,subframe,
2848 2849 2850 2851 2852 2853 2854 2855 2856
            eNB->ulsch[i]->rnti,
            dB_fixed(eNB->pusch_vars[i]->ulsch_power[0]),
            dB_fixed(eNB->pusch_vars[i]->ulsch_power[1]),
            eNB->UE_stats[i].UL_rssi[0],
            eNB->UE_stats[i].UL_rssi[1],
            eNB->measurements->n0_power_dB[0],
            eNB->measurements->n0_power_dB[1],
            eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[0],
            eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[1],
2857
            ret);
2858

2859
      //compute the expected ULSCH RX power (for the stats)
2860
      eNB->ulsch[(uint32_t)i]->harq_processes[harq_pid]->delta_TF =
2861
        get_hundred_times_delta_IF_eNB(eNB,i,harq_pid, 0); // 0 means bw_factor is not considered
2862

2863
      eNB->UE_stats[i].ulsch_decoding_attempts[harq_pid][eNB->ulsch[i]->harq_processes[harq_pid]->round]++;
2864 2865
#ifdef DEBUG_PHY_PROC
      LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d UE %d harq_pid %d Clearing subframe_scheduling_flag\n",
2866
            eNB->Mod_id,harq_pid,frame,subframe,i,harq_pid);
2867
#endif
2868
      eNB->ulsch[i]->harq_processes[harq_pid]->subframe_scheduling_flag=0;
2869

2870
      if (eNB->ulsch[i]->harq_processes[harq_pid]->cqi_crc_status == 1) {
2871
#ifdef DEBUG_PHY_PROC
2872
        //if (((frame%10) == 0) || (frame < 50))
2873
        print_CQI(eNB->ulsch[i]->harq_processes[harq_pid]->o,eNB->ulsch[i]->harq_processes[harq_pid]->uci_format,0,fp->N_RB_DL);
2874
#endif
2875 2876 2877
        extract_CQI(eNB->ulsch[i]->harq_processes[harq_pid]->o,
                    eNB->ulsch[i]->harq_processes[harq_pid]->uci_format,
                    &eNB->UE_stats[i],
2878
                    fp->N_RB_DL,
2879
                    &rnti, &access_mode);
2880
        eNB->UE_stats[i].rank = eNB->ulsch[i]->harq_processes[harq_pid]->o_RI[0];
2881

2882
      }
2883

2884
      if (eNB->ulsch[i]->Msg3_flag == 1)
2885
	VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_ULSCH_MSG3,0);
2886

2887
      if (ret == (1+MAX_TURBO_ITERATIONS)) {
2888

2889 2890 2891 2892
        eNB->UE_stats[i].ulsch_round_errors[harq_pid][eNB->ulsch[i]->harq_processes[harq_pid]->round]++;
        eNB->ulsch[i]->harq_processes[harq_pid]->phich_active = 1;
        eNB->ulsch[i]->harq_processes[harq_pid]->phich_ACK = 0;
        eNB->ulsch[i]->harq_processes[harq_pid]->round++;
2893

2894
        LOG_D(PHY,"[eNB][PUSCH %d] Increasing to round %d\n",harq_pid,eNB->ulsch[i]->harq_processes[harq_pid]->round);
2895

2896
        if (eNB->ulsch[i]->Msg3_flag == 1) {
2897
          LOG_D(PHY,"[eNB %d/%d][RAPROC] frame %d, subframe %d, UE %d: Error receiving ULSCH (Msg3), round %d/%d\n",
2898 2899
                eNB->Mod_id,
                eNB->CC_id,
2900
                frame,subframe, i,
2901
                eNB->ulsch[i]->harq_processes[harq_pid]->round-1,
2902
                fp->maxHARQ_Msg3Tx-1);
2903 2904

	  LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d RNTI %x RX power (%d,%d) RSSI (%d,%d) N0 (%d,%d) dB ACK (%d,%d), decoding iter %d\n",
2905
		eNB->Mod_id,harq_pid,
2906
		frame,subframe,
2907 2908 2909 2910 2911 2912 2913 2914 2915
		eNB->ulsch[i]->rnti,
		dB_fixed(eNB->pusch_vars[i]->ulsch_power[0]),
		dB_fixed(eNB->pusch_vars[i]->ulsch_power[1]),
		eNB->UE_stats[i].UL_rssi[0],
		eNB->UE_stats[i].UL_rssi[1],
		eNB->measurements->n0_power_dB[0],
		eNB->measurements->n0_power_dB[1],
		eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[0],
		eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[1],
2916 2917
		ret);

2918
          if (eNB->ulsch[i]->harq_processes[harq_pid]->round ==
2919
              fp->maxHARQ_Msg3Tx) {
2920
            LOG_D(PHY,"[eNB %d][RAPROC] maxHARQ_Msg3Tx reached, abandoning RA procedure for UE %d\n",
2921
                  eNB->Mod_id, i);
2922
            eNB->UE_stats[i].mode = PRACH;
2923 2924 2925
	    if (eNB->mac_enabled==1) {
	      mac_xface->cancel_ra_proc(eNB->Mod_id,
					eNB->CC_id,
2926
					frame,
2927
					eNB->UE_stats[i].crnti);
2928
	    }
2929
            mac_phy_remove_ue(eNB->Mod_id,eNB->UE_stats[i].crnti);
2930

2931 2932
            eNB->ulsch[(uint32_t)i]->Msg3_active = 0;
            //eNB->ulsch[i]->harq_processes[harq_pid]->phich_active = 0;
2933

2934 2935
          } else {
            // activate retransmission for Msg3 (signalled to UE PHY by PHICH (not MAC/DCI)
2936
            eNB->ulsch[(uint32_t)i]->Msg3_active = 1;
2937

2938
            get_Msg3_alloc_ret(fp,
2939
                               subframe,
2940
                               frame,
2941 2942
                               &eNB->ulsch[i]->Msg3_frame,
                               &eNB->ulsch[i]->Msg3_subframe);
2943 2944 2945
          }
          LOG_D(PHY,"[eNB] Frame %d, Subframe %d: Msg3 in error, i = %d \n", frame,subframe,i);
        } // This is Msg3 error
2946

2947 2948
        else { //normal ULSCH
          LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d UE %d Error receiving ULSCH, round %d/%d (ACK %d,%d)\n",
2949
                eNB->Mod_id,harq_pid,
2950
                frame,subframe, i,
2951 2952 2953 2954
                eNB->ulsch[i]->harq_processes[harq_pid]->round-1,
                eNB->ulsch[i]->Mlimit,
                eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[0],
                eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[1]);
2955 2956 2957 2958 2959 2960 2961

#if defined(MESSAGE_CHART_GENERATOR_PHY)
          MSC_LOG_RX_DISCARDED_MESSAGE(
            MSC_PHY_ENB,MSC_PHY_UE,
            NULL,0,
            "%05u:%02u ULSCH received rnti %x harq id %u round %d",
            frame,subframe,
2962 2963
            eNB->ulsch[i]->rnti,harq_pid,
            eNB->ulsch[i]->harq_processes[harq_pid]->round-1
2964
            );
2965
#endif
2966

2967
          if (eNB->ulsch[i]->harq_processes[harq_pid]->round== eNB->ulsch[i]->Mlimit) {
2968
            LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d UE %d ULSCH Mlimit %d reached\n",
2969
                  eNB->Mod_id,harq_pid,
2970
                  frame,subframe, i,
2971
                  eNB->ulsch[i]->Mlimit);
2972

2973 2974 2975 2976
            eNB->ulsch[i]->harq_processes[harq_pid]->round=0;
            eNB->ulsch[i]->harq_processes[harq_pid]->phich_active=0;
            eNB->UE_stats[i].ulsch_errors[harq_pid]++;
            eNB->UE_stats[i].ulsch_consecutive_errors++;
2977 2978

	    // indicate error to MAC
2979 2980
	    mac_xface->rx_sdu(eNB->Mod_id,
			      eNB->CC_id,
2981
			      frame,subframe,
2982
			      eNB->ulsch[i]->rnti,
2983 2984 2985
			      NULL,
			      0,
			      harq_pid,
2986
			      &eNB->ulsch[i]->Msg3_flag);
2987 2988 2989 2990
          }
        }
      }  // ulsch in error
      else {
2991
        if (eNB->ulsch[i]->Msg3_flag == 1) {
2992
	  LOG_D(PHY,"[eNB %d][PUSCH %d] Frame %d subframe %d ULSCH received, setting round to 0, PHICH ACK\n",
2993
		eNB->Mod_id,harq_pid,
2994 2995
		frame,subframe);
	  LOG_D(PHY,"[eNB %d][PUSCH %d] frame %d subframe %d RNTI %x RX power (%d,%d) RSSI (%d,%d) N0 (%d,%d) dB ACK (%d,%d), decoding iter %d\n",
2996
		eNB->Mod_id,harq_pid,
2997
		frame,subframe,
2998 2999 3000 3001 3002 3003 3004 3005 3006
		eNB->ulsch[i]->rnti,
		dB_fixed(eNB->pusch_vars[i]->ulsch_power[0]),
		dB_fixed(eNB->pusch_vars[i]->ulsch_power[1]),
		eNB->UE_stats[i].UL_rssi[0],
		eNB->UE_stats[i].UL_rssi[1],
		eNB->measurements->n0_power_dB[0],
		eNB->measurements->n0_power_dB[1],
		eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[0],
		eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[1],
3007 3008 3009 3010 3011 3012 3013 3014
		ret);
	}
#if defined(MESSAGE_CHART_GENERATOR_PHY)
        MSC_LOG_RX_MESSAGE(
          MSC_PHY_ENB,MSC_PHY_UE,
          NULL,0,
          "%05u:%02u ULSCH received rnti %x harq id %u",
          frame,subframe,
3015
          eNB->ulsch[i]->rnti,harq_pid
3016
          );
3017
#endif
3018
        for (j=0; j<fp->nb_antennas_rx; j++)
3019
          //this is the RSSI per RB
3020
          eNB->UE_stats[i].UL_rssi[j] =
3021
	    
3022 3023
            dB_fixed(eNB->pusch_vars[i]->ulsch_power[j]*
                     (eNB->ulsch[i]->harq_processes[harq_pid]->nb_rb*12)/
3024
                     fp->ofdm_symbol_size) -
3025 3026
            eNB->rx_total_gain_dB -
            hundred_times_log10_NPRB[eNB->ulsch[i]->harq_processes[harq_pid]->nb_rb-1]/100 -
3027
            get_hundred_times_delta_IF_eNB(eNB,i,harq_pid, 0)/100;
3028
	    
3029 3030 3031 3032
        eNB->ulsch[i]->harq_processes[harq_pid]->phich_active = 1;
        eNB->ulsch[i]->harq_processes[harq_pid]->phich_ACK = 1;
        eNB->ulsch[i]->harq_processes[harq_pid]->round = 0;
        eNB->UE_stats[i].ulsch_consecutive_errors = 0;
3033

3034
        if (eNB->ulsch[i]->Msg3_flag == 1) {
3035
	  if (eNB->mac_enabled==1) {
3036

3037
	    LOG_I(PHY,"[eNB %d][RAPROC] Frame %d Terminating ra_proc for harq %d, UE %d\n",
3038
		  eNB->Mod_id,
3039 3040
		  frame,harq_pid,i);
	    
3041 3042
	    mac_xface->rx_sdu(eNB->Mod_id,
			      eNB->CC_id,
3043
			      frame,subframe,
3044 3045 3046
			      eNB->ulsch[i]->rnti,
			      eNB->ulsch[i]->harq_processes[harq_pid]->b,
			      eNB->ulsch[i]->harq_processes[harq_pid]->TBS>>3,
3047
			      harq_pid,
3048
			      &eNB->ulsch[i]->Msg3_flag);
3049 3050
	    
	    // one-shot msg3 detection by MAC: empty PDU (e.g. CRNTI)
3051 3052
	    if (eNB->ulsch[i]->Msg3_flag == 0 ) {
	      eNB->UE_stats[i].mode = PRACH;
3053 3054
	      mac_xface->cancel_ra_proc(eNB->Mod_id,
					eNB->CC_id,
3055
					frame,
3056 3057 3058
					eNB->UE_stats[i].crnti);
	      mac_phy_remove_ue(eNB->Mod_id,eNB->UE_stats[i].crnti);
	      eNB->ulsch[(uint32_t)i]->Msg3_active = 0;
3059 3060 3061
	    } // Msg3_flag == 0
	    
	  } // mac_enabled==1
3062

3063 3064
          eNB->UE_stats[i].mode = PUSCH;
          eNB->ulsch[i]->Msg3_flag = 0;
3065

3066
	  LOG_D(PHY,"[eNB %d][RAPROC] Frame %d : RX Subframe %d Setting UE %d mode to PUSCH\n",eNB->Mod_id,frame,subframe,i);
3067

3068
          for (k=0; k<8; k++) { //harq_processes
3069 3070 3071 3072
            for (j=0; j<eNB->dlsch[i][0]->Mlimit; j++) {
              eNB->UE_stats[i].dlsch_NAK[k][j]=0;
              eNB->UE_stats[i].dlsch_ACK[k][j]=0;
              eNB->UE_stats[i].dlsch_trials[k][j]=0;
3073
            }
3074

3075 3076 3077
            eNB->UE_stats[i].dlsch_l2_errors[k]=0;
            eNB->UE_stats[i].ulsch_errors[k]=0;
            eNB->UE_stats[i].ulsch_consecutive_errors=0;
3078

3079 3080 3081 3082 3083
            for (j=0; j<eNB->ulsch[i]->Mlimit; j++) {
              eNB->UE_stats[i].ulsch_decoding_attempts[k][j]=0;
              eNB->UE_stats[i].ulsch_decoding_attempts_last[k][j]=0;
              eNB->UE_stats[i].ulsch_round_errors[k][j]=0;
              eNB->UE_stats[i].ulsch_round_fer[k][j]=0;
3084
            }
3085 3086
          }

3087 3088 3089
          eNB->UE_stats[i].dlsch_sliding_cnt=0;
          eNB->UE_stats[i].dlsch_NAK_round0=0;
          eNB->UE_stats[i].dlsch_mcs_offset=0;
3090 3091 3092
        } // Msg3_flag==1
	else {  // Msg3_flag == 0

3093
#ifdef DEBUG_PHY_PROC
3094 3095
#ifdef DEBUG_ULSCH
          LOG_D(PHY,"[eNB] Frame %d, Subframe %d : ULSCH SDU (RX harq_pid %d) %d bytes:",frame,subframe,
3096
                harq_pid,eNB->ulsch[i]->harq_processes[harq_pid]->TBS>>3);
3097

3098 3099
          for (j=0; j<eNB->ulsch[i]->harq_processes[harq_pid]->TBS>>3; j++)
            LOG_T(PHY,"%x.",eNB->ulsch[i]->harq_processes[harq_pid]->b[j]);
3100 3101 3102

          LOG_T(PHY,"\n");
#endif
3103
#endif
3104

3105
	  if (eNB->mac_enabled==1) {
3106

3107 3108
	    mac_xface->rx_sdu(eNB->Mod_id,
			      eNB->CC_id,
3109
			      frame,subframe,
3110 3111 3112
			      eNB->ulsch[i]->rnti,
			      eNB->ulsch[i]->harq_processes[harq_pid]->b,
			      eNB->ulsch[i]->harq_processes[harq_pid]->TBS>>3,
3113 3114
			      harq_pid,
			      NULL);
3115

3116
#ifdef LOCALIZATION
3117 3118
	    start_meas(&eNB->localization_stats);
	    aggregate_eNB_UE_localization_stats(eNB,
3119 3120 3121
						i,
						frame,
						subframe,
3122 3123
						get_hundred_times_delta_IF_eNB(eNB,i,harq_pid, 1)/100);
	    stop_meas(&eNB->localization_stats);
3124
#endif
3125 3126 3127
	    
	  } // mac_enabled==1
        } // Msg3_flag == 0
3128

3129 3130
        // estimate timing advance for MAC
        if (abstraction_flag == 0) {
3131
          sync_pos = lte_est_timing_advance_pusch(eNB,i);
3132
          eNB->UE_stats[i].timing_advance_update = sync_pos - fp->nb_prefix_samples/4; //to check
3133
        }
3134

3135 3136
#ifdef DEBUG_PHY_PROC
        LOG_D(PHY,"[eNB %d] frame %d, subframe %d: user %d: timing advance = %d\n",
3137
              eNB->Mod_id,
3138 3139
              frame, subframe,
              i,
3140
              eNB->UE_stats[i].timing_advance_update);
3141
#endif
3142 3143


3144 3145 3146
      }  // ulsch not in error

      // process HARQ feedback
3147
#ifdef DEBUG_PHY_PROC
3148
      LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d, Processing HARQ feedback for UE %d (after PUSCH)\n",eNB->Mod_id,
3149
            eNB->dlsch[i][0]->rnti,
3150 3151
            frame,subframe,
            i);
3152
#endif
3153
      process_HARQ_feedback(i,
3154
                            eNB,proc,
3155 3156 3157 3158 3159 3160 3161
                            1, // pusch_flag
                            0,
                            0,
                            0);

#ifdef DEBUG_PHY_PROC
      LOG_D(PHY,"[eNB %d] Frame %d subframe %d, sect %d: received ULSCH harq_pid %d for UE %d, ret = %d, CQI CRC Status %d, ACK %d,%d, ulsch_errors %d/%d\n",
3162
            eNB->Mod_id,frame,subframe,
3163
            eNB->UE_stats[i].sector,
3164 3165 3166
            harq_pid,
            i,
            ret,
3167 3168 3169 3170 3171
            eNB->ulsch[i]->harq_processes[harq_pid]->cqi_crc_status,
            eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[0],
            eNB->ulsch[i]->harq_processes[harq_pid]->o_ACK[1],
            eNB->UE_stats[i].ulsch_errors[harq_pid],
            eNB->UE_stats[i].ulsch_decoding_attempts[harq_pid][0]);
3172 3173 3174 3175
#endif
      
      // dump stats to VCD
      if (i==0) {
3176 3177 3178
	VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_MCS0+harq_pid,eNB->pusch_stats_mcs[0][(frame*10)+subframe]);
	VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_RB0+harq_pid,eNB->pusch_stats_rb[0][(frame*10)+subframe]);
	VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_ROUND0+harq_pid,eNB->pusch_stats_round[0][(frame*10)+subframe]);
3179
	VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_RSSI0+harq_pid,dB_fixed(eNB->pusch_vars[0]->ulsch_power[0]));
3180 3181
	VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_RES0+harq_pid,ret);
	VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_SFN0+harq_pid,(frame*10)+subframe);
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3182
      }
3183
    } // ulsch[0] && ulsch[0]->rnti>0 && ulsch[0]->subframe_scheduling_flag == 1
3184

3185

3186
    // update ULSCH statistics for tracing
3187
    if ((frame % 100 == 0) && (subframe == 4)) {
3188
      for (harq_idx=0; harq_idx<8; harq_idx++) {
3189 3190 3191 3192 3193 3194 3195 3196
        for (round=0; round<eNB->ulsch[i]->Mlimit; round++) {
          if ((eNB->UE_stats[i].ulsch_decoding_attempts[harq_idx][round] -
               eNB->UE_stats[i].ulsch_decoding_attempts_last[harq_idx][round]) != 0) {
            eNB->UE_stats[i].ulsch_round_fer[harq_idx][round] =
              (100*(eNB->UE_stats[i].ulsch_round_errors[harq_idx][round] -
                    eNB->UE_stats[i].ulsch_round_errors_last[harq_idx][round]))/
              (eNB->UE_stats[i].ulsch_decoding_attempts[harq_idx][round] -
               eNB->UE_stats[i].ulsch_decoding_attempts_last[harq_idx][round]);
3197
          } else {
3198
            eNB->UE_stats[i].ulsch_round_fer[harq_idx][round] = 0;
3199 3200
          }

3201 3202 3203 3204
          eNB->UE_stats[i].ulsch_decoding_attempts_last[harq_idx][round] =
            eNB->UE_stats[i].ulsch_decoding_attempts[harq_idx][round];
          eNB->UE_stats[i].ulsch_round_errors_last[harq_idx][round] =
            eNB->UE_stats[i].ulsch_round_errors[harq_idx][round];
3205
        }
3206 3207
      }
    }
3208

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3209
    if ((frame % 100 == 0) && (subframe==4)) {
3210 3211
      eNB->UE_stats[i].dlsch_bitrate = (eNB->UE_stats[i].total_TBS -
          eNB->UE_stats[i].total_TBS_last);
3212

3213
      eNB->UE_stats[i].total_TBS_last = eNB->UE_stats[i].total_TBS;
3214
    }
3215

3216
    // CBA (non-LTE)
3217
    cba_procedures(eNB,proc,i,harq_pid,abstraction_flag);
3218 3219
  } // loop i=0 ... NUMBER_OF_UE_MAX-1

3220
  if (abstraction_flag == 0) {
3221
    lte_eNB_I0_measurements(eNB,
3222 3223
			    subframe,
			    0,
3224 3225
			    eNB->first_run_I0_measurements);
    eNB->first_run_I0_measurements = 0;
3226
  }
3227

3228
#ifdef PHY_ABSTRACTION
3229
    else {
3230
      lte_eNB_I0_measurements_emul(eNB,
3231
                                   0);
3232
    }
3233

3234
#endif
3235 3236


3237
    //}
3238 3239

#ifdef EMOS
3240
  phy_procedures_emos_eNB_RX(subframe,eNB);
3241 3242
#endif

3243
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_RX,0);
3244
  stop_meas(&eNB->phy_proc_rx);
3245

3246 3247 3248 3249
}

#undef DEBUG_PHY_PROC

3250 3251 3252 3253
#ifdef Rel10
int phy_procedures_RN_eNB_TX(unsigned char last_slot, unsigned char next_slot, relaying_type_t r_type)
{

3254
  int do_proc=0;// do nothing
3255 3256

  switch(r_type) {
3257
  case no_relay:
3258
    do_proc= no_relay; // perform the normal eNB operation
3259
    break;
3260

3261
  case multicast_relay:
3262
    if (((next_slot >>1) < 6) || ((next_slot >>1) > 8))
3263
      do_proc = 0; // do nothing
3264 3265 3266
    else // SF#6, SF#7 and SF#8
      do_proc = multicast_relay; // do PHY procedures eNB TX

3267
    break;
3268

3269 3270
  default: // should'not be here
    LOG_W(PHY,"Not supported relay type %d, do nothing\n", r_type);
3271
    do_proc=0;
3272 3273
    break;
  }
3274

3275 3276
  return do_proc;
}
3277
#endif
3278
/*
3279 3280
void phy_procedures_eNB_lte(unsigned char subframe,PHY_VARS_eNB **eNB,uint8_t abstraction_flag,
                            relaying_type_t r_type, PHY_VARS_RN *rn)
3281
{
3282
#if defined(ENABLE_ITTI)
3283 3284 3285 3286 3287
  MessageDef   *msg_p;
  const char   *msg_name;
  instance_t    instance;
  unsigned int  Mod_id;
  int           result;
3288
#endif
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3289

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3290 3291 3292

  int CC_id=0;

3293

3294
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX_ENB, eNB[0]->proc[subframe].frame_tx);
3295
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_LTE,1);
3296
  start_meas(&eNB[0]->phy_proc);
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3297

3298
#if defined(ENABLE_ITTI)
3299

3300
  do {
3301 3302
    // Checks if a message has been sent to PHY sub-task
    itti_poll_msg (TASK_PHY_ENB, &msg_p);
3303

3304 3305 3306 3307
    if (msg_p != NULL) {
      msg_name = ITTI_MSG_NAME (msg_p);
      instance = ITTI_MSG_INSTANCE (msg_p);
      Mod_id = instance;
3308

3309
      switch (ITTI_MSG_ID(msg_p)) {
3310

3311
        // Messages from eNB app
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3312
      case PHY_CONFIGURATION_REQ:
3313
        LOG_I(PHY, "[eNB %d] Received %s\n", instance, msg_name);
3314
        // TODO
3315

3316
        break;
3317

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3318
      default:
3319 3320
        LOG_E(PHY, "[ENB %d] Received unexpected message %s\n", Mod_id, msg_name);
        break;
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3321
      }
3322 3323 3324 3325

      result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
      AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
    }
3326
  } while(msg_p != NULL);
3327

3328 3329
#endif

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3330

3331
  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
3332 3333 3334
    if ((((eNB[CC_id]->frame_parms.frame_type == TDD)&&
          (subframe_select(&eNB[CC_id]->frame_parms,eNB[CC_id]->proc[0].subframe_tx)==SF_DL))||
         (eNB[CC_id]->frame_parms.frame_type == FDD))) {
3335 3336
#ifdef Rel10

3337
      if (phy_procedures_RN_eNB_TX(eNB[CC_id]->proc[0].subframe_rx, eNB[CC_id]->proc[0].subframe_tx, r_type) != 0 )
3338
#endif
3339
        phy_procedures_eNB_TX(subframe,eNB[CC_id],abstraction_flag,r_type,rn);
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3340
    }
3341

3342 3343 3344
    if ((((eNB[CC_id]->frame_parms.frame_type == TDD )&&
          (subframe_select(&eNB[CC_id]->frame_parms,eNB[CC_id]->proc[0].subframe_rx)==SF_UL)) ||
         (eNB[CC_id]->frame_parms.frame_type == FDD))) {
3345
      phy_procedures_eNB_RX(subframe,eNB[CC_id],abstraction_flag,r_type);
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3346
    }
3347

3348
    if (subframe_select(&eNB[CC_id]->frame_parms,eNB[CC_id]->proc[0].subframe_tx)==SF_S) {
3349 3350
#ifdef Rel10

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3351
      if (phy_procedures_RN_eNB_TX(subframe, subframe, r_type) != 0 )
3352
#endif
3353
        phy_procedures_eNB_TX(subframe,eNB[CC_id],abstraction_flag,r_type,rn);
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3354
    }
3355

3356
    if ((subframe_select(&eNB[CC_id]->frame_parms,eNB[CC_id]->proc[0].subframe_rx)==SF_S)) {
3357
      phy_procedures_eNB_S_RX(subframe,eNB[CC_id],abstraction_flag,r_type);
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3358
    }
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3359

3360 3361
    eNB[CC_id]->proc[0].frame_tx++;
    eNB[CC_id]->proc[0].frame_rx++;
3362

3363 3364
    if (eNB[CC_id]->proc[0].frame_tx>=MAX_FRAME_NUMBER) // defined in impl_defs_top.h
      eNB[CC_id]->proc[0].frame_tx-=MAX_FRAME_NUMBER;
3365

3366 3367
    if (eNB[CC_id]->proc[0].frame_rx>=MAX_FRAME_NUMBER)
      eNB[CC_id]->proc[0].frame_rx-=MAX_FRAME_NUMBER;
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3368
  }
3369

3370
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_LTE,0);
3371
  stop_meas(&eNB[0]->phy_proc);
3372
}
3373
*/