lte-enb.c

/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

/*! \file lte-enb.c
 * \brief Top-level threads for eNodeB
 * \author R. Knopp, F. Kaltenberger, Navid Nikaein
 * \date 2012
 * \version 0.1
 * \company Eurecom
 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr
 * \note
 * \warning
 */

#define _GNU_SOURCE
#include <pthread.h>


#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all

#include "rt_wrapper.h"

#include "assertions.h"


#include "PHY/types.h"

#include "PHY/INIT/phy_init.h"

#include "PHY/defs_eNB.h"
#include "SCHED/sched_eNB.h"
#include "PHY/LTE_TRANSPORT/transport_proto.h"

#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all
//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all

#include "../../ARCH/COMMON/common_lib.h"

//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all

#include "PHY/LTE_TRANSPORT/if4_tools.h"
#include "PHY/LTE_TRANSPORT/if5_tools.h"

#include "PHY/phy_extern.h"


#include "LAYER2/MAC/mac.h"
#include "LAYER2/MAC/mac_extern.h"
#include "LAYER2/MAC/mac_proto.h"
#include "RRC/LTE/rrc_extern.h"
#include "PHY_INTERFACE/phy_interface.h"
#include "common/utils/LOG/log.h"
#include "UTIL/OTG/otg_tx.h"
#include "UTIL/OTG/otg_externs.h"
#include "UTIL/MATH/oml.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "enb_config.h"


#ifndef OPENAIR2
#include "UTIL/OTG/otg_extern.h"
#endif

#if defined(ENABLE_ITTI)
# if defined(ENABLE_USE_MME)
#   include "s1ap_eNB.h"
#ifdef PDCP_USE_NETLINK
#   include "SIMULATION/ETH_TRANSPORT/proto.h"
#endif
# endif
#endif

#include "T.h"

//#define DEBUG_THREADS 1

//#define USRP_DEBUG 1
struct timing_info_t {
  //unsigned int frame, hw_slot, last_slot, next_slot;
  RTIME time_min, time_max, time_avg, time_last, time_now;
  //unsigned int mbox0, mbox1, mbox2, mbox_target;
  unsigned int n_samples;
} timing_info;

// Fix per CC openair rf/if device update
// extern openair0_device openair0;


#if defined(ENABLE_ITTI)
extern volatile int             start_eNB;
extern volatile int             start_UE;
#endif
extern volatile int                    oai_exit;

extern int transmission_mode;

extern int oaisim_flag;

//uint16_t sf_ahead=4;
extern uint16_t sf_ahead;


//pthread_t                       main_eNB_thread;

time_stats_t softmodem_stats_mt; // main thread
time_stats_t softmodem_stats_hw; //  hw acquisition
time_stats_t softmodem_stats_rxtx_sf; // total tx time
time_stats_t nfapi_meas; // total tx time
time_stats_t softmodem_stats_rx_sf; // total rx time

/* mutex, cond and variable to serialize phy proc TX calls
 * (this mechanism may be relaxed in the future for better
 * performances)
 */
static struct {
  pthread_mutex_t  mutex_phy_proc_tx;
  pthread_cond_t   cond_phy_proc_tx;
  volatile uint8_t phy_proc_CC_id;
} sync_phy_proc;

extern double cpuf;


void init_eNB(int,int);
void stop_eNB(int nb_inst);

int wakeup_tx(PHY_VARS_eNB *eNB);
int wakeup_txfh(L1_rxtx_proc_t *proc,PHY_VARS_eNB *eNB);
void wakeup_prach_eNB(PHY_VARS_eNB *eNB,RU_t *ru,int frame,int subframe);
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
void wakeup_prach_eNB_br(PHY_VARS_eNB *eNB,RU_t *ru,int frame,int subframe);
#endif

extern uint8_t nfapi_mode;
extern void oai_subframe_ind(uint16_t sfn, uint16_t sf);
extern void add_subframe(uint16_t *frameP, uint16_t *subframeP, int offset);

//#define TICK_TO_US(ts) (ts.diff)
#define TICK_TO_US(ts) (ts.trials==0?0:ts.diff/ts.trials)


static inline int rxtx(PHY_VARS_eNB *eNB,L1_rxtx_proc_t *proc, char *thread_name) {
  start_meas(&softmodem_stats_rxtx_sf);
  //L1_rxtx_proc_t *L1_proc_tx = &eNB->proc.L1_proc_tx;

  // *******************************************************************

  if (nfapi_mode == 1) {

    // I am a PNF and I need to let nFAPI know that we have a (sub)frame tick
    uint16_t frame = proc->frame_rx;
    uint16_t subframe = proc->subframe_rx;

    //add_subframe(&frame, &subframe, 4);

    //oai_subframe_ind(proc->frame_tx, proc->subframe_tx);
    //LOG_D(PHY, "oai_subframe_ind(frame:%u, subframe:%d) - NOT CALLED ********\n", frame, subframe);
    start_meas(&nfapi_meas);
    oai_subframe_ind(frame, subframe);
    stop_meas(&nfapi_meas);

    if (eNB->UL_INFO.rx_ind.rx_indication_body.number_of_pdus||
        eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs ||
        eNB->UL_INFO.crc_ind.crc_indication_body.number_of_crcs ||
        eNB->UL_INFO.rach_ind.rach_indication_body.number_of_preambles ||
        eNB->UL_INFO.cqi_ind.number_of_cqis
       ) {
      LOG_D(PHY, "UL_info[rx_ind:%05d:%d harqs:%05d:%d crcs:%05d:%d preambles:%05d:%d cqis:%d] RX:%04d%d TX:%04d%d num_pdcch_symbols:%d\n", 
          NFAPI_SFNSF2DEC(eNB->UL_INFO.rx_ind.sfn_sf),   eNB->UL_INFO.rx_ind.rx_indication_body.number_of_pdus, 
          NFAPI_SFNSF2DEC(eNB->UL_INFO.harq_ind.sfn_sf), eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs, 
          NFAPI_SFNSF2DEC(eNB->UL_INFO.crc_ind.sfn_sf),  eNB->UL_INFO.crc_ind.crc_indication_body.number_of_crcs, 
          NFAPI_SFNSF2DEC(eNB->UL_INFO.rach_ind.sfn_sf), eNB->UL_INFO.rach_ind.rach_indication_body.number_of_preambles,
          eNB->UL_INFO.cqi_ind.number_of_cqis, 
          proc->frame_rx, proc->subframe_rx, 
      proc->frame_tx, proc->subframe_tx, eNB->pdcch_vars[proc->subframe_tx&1].num_pdcch_symbols);
    }
  }

  if (nfapi_mode == 1 && eNB->pdcch_vars[proc->subframe_tx&1].num_pdcch_symbols == 0) {
    LOG_E(PHY, "eNB->pdcch_vars[proc->subframe_tx&1].num_pdcch_symbols == 0");
    return 0;
  }

  // ****************************************
  // Common RX procedures subframe n

  T(T_ENB_PHY_DL_TICK, T_INT(eNB->Mod_id), T_INT(proc->frame_tx), T_INT(proc->subframe_tx));

  // if this is IF5 or 3GPP_eNB
  if (eNB && eNB->RU_list && eNB->RU_list[0] && eNB->RU_list[0]->function < NGFI_RAU_IF4p5) {
    wakeup_prach_eNB(eNB,NULL,proc->frame_rx,proc->subframe_rx);
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
    wakeup_prach_eNB_br(eNB,NULL,proc->frame_rx,proc->subframe_rx);
#endif
  }

  release_UE_in_freeList(eNB->Mod_id);

  // UE-specific RX processing for subframe n
  if (nfapi_mode == 0 || nfapi_mode == 1) {
    phy_procedures_eNB_uespec_RX(eNB, proc);
  }
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER , 1 );

  pthread_mutex_lock(&eNB->UL_INFO_mutex);

  eNB->UL_INFO.frame     = proc->frame_rx;
  eNB->UL_INFO.subframe  = proc->subframe_rx;
  eNB->UL_INFO.module_id = eNB->Mod_id;
  eNB->UL_INFO.CC_id     = eNB->CC_id;

  eNB->if_inst->UL_indication(&eNB->UL_INFO);

  pthread_mutex_unlock(&eNB->UL_INFO_mutex);
  /* this conflict resolution may be totally wrong, to be tested */
  /* CONFLICT RESOLUTION: BEGIN */
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER , 0 );
  if(oai_exit) return(-1);
  if(get_thread_parallel_conf() == PARALLEL_SINGLE_THREAD){
#ifndef PHY_TX_THREAD
    phy_procedures_eNB_TX(eNB, proc, 1);
#endif
  }
  /* CONFLICT RESOLUTION: what about this release_thread call, has it to be done? if yes, where? */
  //if (release_thread(&proc->mutex_rxtx,&proc->instance_cnt_rxtx,thread_name)<0) return(-1);
  /* CONFLICT RESOLUTION: END */

  stop_meas( &softmodem_stats_rxtx_sf );

  LOG_D(PHY,"%s() Exit proc[rx:%d%d tx:%d%d]\n", __FUNCTION__, proc->frame_rx, proc->subframe_rx, proc->frame_tx, proc->subframe_tx);

  LOG_D(PHY, "rxtx:%lld nfapi:%lld tx:%lld rx:%lld prach:%lld ofdm:%lld ",
      softmodem_stats_rxtx_sf.p_time, nfapi_meas.p_time,
      TICK_TO_US(eNB->phy_proc_tx),
      TICK_TO_US(eNB->phy_proc_rx),
      TICK_TO_US(eNB->rx_prach),
      TICK_TO_US(eNB->ofdm_mod_stats)
      );
  LOG_D(PHY,
    "dlsch[enc:%lld mod:%lld scr:%lld rm:%lld t:%lld i:%lld] rx_dft:%lld ",
      TICK_TO_US(eNB->dlsch_encoding_stats),
      TICK_TO_US(eNB->dlsch_modulation_stats),
      TICK_TO_US(eNB->dlsch_scrambling_stats),
      TICK_TO_US(eNB->dlsch_rate_matching_stats),
      TICK_TO_US(eNB->dlsch_turbo_encoding_stats),
      TICK_TO_US(eNB->dlsch_interleaving_stats),
      TICK_TO_US(eNB->rx_dft_stats));

  LOG_D(PHY," ulsch[ch:%lld freq:%lld dec:%lld demod:%lld ru:%lld ",
      TICK_TO_US(eNB->ulsch_channel_estimation_stats),
      TICK_TO_US(eNB->ulsch_freq_offset_estimation_stats),
      TICK_TO_US(eNB->ulsch_decoding_stats),
      TICK_TO_US(eNB->ulsch_demodulation_stats),
      TICK_TO_US(eNB->ulsch_rate_unmatching_stats));

  LOG_D(PHY, "td:%lld dei:%lld dem:%lld llr:%lld tci:%lld ",
      TICK_TO_US(eNB->ulsch_turbo_decoding_stats),
      TICK_TO_US(eNB->ulsch_deinterleaving_stats),
      TICK_TO_US(eNB->ulsch_demultiplexing_stats),
      TICK_TO_US(eNB->ulsch_llr_stats),
      TICK_TO_US(eNB->ulsch_tc_init_stats));
  LOG_D(PHY, "tca:%lld tcb:%lld tcg:%lld tce:%lld l1:%lld l2:%lld]\n\n", 
      TICK_TO_US(eNB->ulsch_tc_alpha_stats),
      TICK_TO_US(eNB->ulsch_tc_beta_stats),
      TICK_TO_US(eNB->ulsch_tc_gamma_stats),
      TICK_TO_US(eNB->ulsch_tc_ext_stats),
      TICK_TO_US(eNB->ulsch_tc_intl1_stats),
      TICK_TO_US(eNB->ulsch_tc_intl2_stats)
      );
  
  return(0);
}


static void* L1_thread_tx(void* param) {

  L1_proc_t *eNB_proc  = (L1_proc_t*)param;
  L1_rxtx_proc_t *proc = &eNB_proc->L1_proc_tx;
  PHY_VARS_eNB *eNB = RC.eNB[0][proc->CC_id];
  
  char thread_name[100];
  sprintf(thread_name,"TXnp4_%d\n",&eNB->proc.L1_proc == proc ? 0 : 1);
  thread_top_init(thread_name,1,470000,500000,500000);
  
  //wait_sync("tx_thread");
  
  while (!oai_exit) {
    

    if (wait_on_condition(&proc->mutex,&proc->cond,&proc->instance_cnt,thread_name)<0) break;
    if (oai_exit) break;    
    // *****************************************
    // TX processing for subframe n+4
    // run PHY TX procedures the one after the other for all CCs to avoid race conditions
    // (may be relaxed in the future for performance reasons)
    // *****************************************
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_TX1_ENB,proc->subframe_tx);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_RX1_ENB,proc->subframe_rx);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX1_ENB,proc->frame_tx);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX1_ENB,proc->frame_rx);
    
    phy_procedures_eNB_TX(eNB, proc, 1);

    pthread_mutex_lock( &proc->mutex );
    proc->instance_cnt = -1;
    // the thread can now be woken up
    if (pthread_cond_signal(&proc->cond) != 0) {
      LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB TXnp4 thread\n");
      exit_fun( "ERROR pthread_cond_signal" );
    }
    pthread_mutex_unlock( &proc->mutex );
    wakeup_txfh(proc,eNB);
  }

  return 0;
}

/*!
 * \brief The RX UE-specific and TX thread of eNB.
 * \param param is a \ref L1_proc_t structure which contains the info what to process.
 * \returns a pointer to an int. The storage is not on the heap and must not be freed.
 */

static void* L1_thread( void* param ) {

  static int eNB_thread_rxtx_status;
  //L1_proc_t *eNB_proc  = (L1_proc_t*)param;
  L1_rxtx_proc_t *proc;

  // Working
  if(nfapi_mode ==2){
	  proc = (L1_rxtx_proc_t*)param;
  }
  else{
	  L1_proc_t *eNB_proc  = (L1_proc_t*)param;
	  proc = &eNB_proc->L1_proc;
  }


  PHY_VARS_eNB *eNB = RC.eNB[0][proc->CC_id];

  char thread_name[100];

  cpu_set_t cpuset;
  CPU_ZERO(&cpuset);

  // set default return value
  eNB_thread_rxtx_status = 0;


  sprintf(thread_name,"RXn_TXnp4_%d\n",&eNB->proc.L1_proc == proc ? 0 : 1);
  thread_top_init(thread_name,1,470000,500000,500000);
  pthread_setname_np( pthread_self(),"rxtx processing");
  LOG_I(PHY,"thread rxtx created id=%ld\n", syscall(__NR_gettid));



  while (!oai_exit) {
    
    
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RXTX0+(proc->subframe_rx&1), 0 );
    T(T_ENB_MASTER_TICK, T_INT(0), T_INT(proc->frame_rx), T_INT(proc->subframe_rx));

    if (wait_on_condition(&proc->mutex,&proc->cond,&proc->instance_cnt,thread_name)<0) break;

    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_CPUID_ENB_THREAD_RXTX,sched_getcpu());
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RXTX0+(proc->subframe_rx&1), 1 );
   
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_TX0_ENB,proc->subframe_tx);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_RX0_ENB,proc->subframe_rx);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX0_ENB,proc->frame_tx);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX0_ENB,proc->frame_rx);
 

    if (oai_exit) break;

    if (eNB->CC_id==0)
    {
      if (rxtx(eNB,proc,thread_name) < 0) break;
    }

    if(get_thread_parallel_conf() == PARALLEL_RU_L1_SPLIT)              phy_procedures_eNB_TX(eNB, proc, 1);
    if (release_thread(&proc->mutex,&proc->instance_cnt,thread_name)<0) break;
    if (nfapi_mode!=2){
    	if(get_thread_parallel_conf() == PARALLEL_RU_L1_TRX_SPLIT)      wakeup_tx(eNB);
    	else if(get_thread_parallel_conf() == PARALLEL_RU_L1_SPLIT)     wakeup_txfh(proc,eNB);
    }

  } // while !oai_exit

  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RXTX0+(proc->subframe_rx&1), 0 );

  LOG_D(PHY, " *** Exiting eNB thread RXn_TXnp4\n");

  eNB_thread_rxtx_status = 0;
  return &eNB_thread_rxtx_status;
}

void eNB_top(PHY_VARS_eNB *eNB, int frame_rx, int subframe_rx, char *string,RU_t *ru)
{
  L1_proc_t *proc           = &eNB->proc;
  L1_rxtx_proc_t *L1_proc = &proc->L1_proc;
  LTE_DL_FRAME_PARMS *fp = &ru->frame_parms;
  RU_proc_t *ru_proc=&ru->proc;

  proc->frame_rx    = frame_rx;
  proc->subframe_rx = subframe_rx;

  if (!oai_exit) {
    T(T_ENB_MASTER_TICK, T_INT(0), T_INT(proc->frame_rx), T_INT(proc->subframe_rx));

    L1_proc->timestamp_tx = ru_proc->timestamp_rx + (sf_ahead*fp->samples_per_tti);
    L1_proc->frame_rx     = ru_proc->frame_rx;
    L1_proc->subframe_rx  = ru_proc->subframe_rx;
    L1_proc->frame_tx     = (L1_proc->subframe_rx > (9-sf_ahead)) ? (L1_proc->frame_rx+1)&1023 : L1_proc->frame_rx;
    L1_proc->subframe_tx  = (L1_proc->subframe_rx + sf_ahead)%10;

    if (rxtx(eNB,L1_proc,string) < 0) LOG_E(PHY,"eNB %d CC_id %d failed during execution\n",eNB->Mod_id,eNB->CC_id);
    ru_proc->timestamp_tx = L1_proc->timestamp_tx;
    ru_proc->subframe_tx  = L1_proc->subframe_tx;
    ru_proc->frame_tx     = L1_proc->frame_tx;
  }
}

int wakeup_txfh(L1_rxtx_proc_t *proc,PHY_VARS_eNB *eNB) {

  RU_t *ru;
  RU_proc_t *ru_proc;


  struct timespec wait;
  wait.tv_sec=0;
  wait.tv_nsec=5000000L;

  if(wait_on_condition(&proc->mutex_RUs,&proc->cond_RUs,&proc->instance_cnt_RUs,"wakeup_txfh")<0) {
    LOG_E(PHY,"Frame %d, subframe %d: TX FH not ready\n", proc->frame_tx, proc->subframe_tx);
    return(-1);
  }
  pthread_mutex_lock(&eNB->proc.mutex_RU_tx);
  eNB->proc.RU_mask_tx = 0;
  pthread_mutex_unlock(&eNB->proc.mutex_RU_tx);
  if (release_thread(&proc->mutex_RUs,&proc->instance_cnt_RUs,"wakeup_txfh")<0) return(-1);

  for(int i=0; i<eNB->num_RU; i++)
  {
    ru      = eNB->RU_list[i];
    ru_proc = &ru->proc;
    if (ru_proc->instance_cnt_eNBs == 0) {
      LOG_E(PHY,"Frame %d, subframe %d: TX FH thread busy, dropping Frame %d, subframe %d\n", ru_proc->frame_tx, ru_proc->subframe_tx, proc->frame_rx, proc->subframe_rx);
      return(-1);
    }
    if (pthread_mutex_timedlock(&ru_proc->mutex_eNBs,&wait) != 0) {
      LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB TX1 thread %d (IC %d)\n", ru_proc->subframe_rx&1,ru_proc->instance_cnt_eNBs );
      exit_fun( "error locking mutex_eNB" );
      return(-1);
    }

    ru_proc->instance_cnt_eNBs = 0;
    ru_proc->timestamp_tx = proc->timestamp_tx;
    ru_proc->subframe_tx  = proc->subframe_tx;
    ru_proc->frame_tx     = proc->frame_tx;

  
    // the thread can now be woken up
    if (pthread_cond_signal(&ru_proc->cond_eNBs) != 0) {
      LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB TXnp4 thread\n");
      exit_fun( "ERROR pthread_cond_signal" );
      return(-1);
    }
  
    pthread_mutex_unlock( &ru_proc->mutex_eNBs );
  }

  return(0);
}

int wakeup_tx(PHY_VARS_eNB *eNB) {

  L1_proc_t *proc=&eNB->proc;

  L1_rxtx_proc_t *L1_proc_tx = &proc->L1_proc_tx;
  L1_rxtx_proc_t *L1_proc    = &proc->L1_proc;

  
  struct timespec wait;
  wait.tv_sec=0;
  wait.tv_nsec=5000000L;
  
  
  if (pthread_mutex_timedlock(&L1_proc_tx->mutex,&wait) != 0) {
    LOG_E(PHY, "[SCHED][eNB] ERROR locking mutex for eNB L1_thread_tx\n");
    exit_fun("ERROR pthread_lock");
    return(-1);
  }
  while(L1_proc_tx->instance_cnt == 0){
    pthread_cond_wait(&L1_proc_tx->cond,&L1_proc_tx->mutex);
  }

  L1_proc_tx->instance_cnt = 0;

  
  L1_proc_tx->subframe_rx   = L1_proc->subframe_rx;
  L1_proc_tx->frame_rx      = L1_proc->frame_rx;
  L1_proc_tx->subframe_tx   = L1_proc->subframe_tx;
  L1_proc_tx->frame_tx      = L1_proc->frame_tx;
  L1_proc_tx->timestamp_tx  = L1_proc->timestamp_tx;
  
  // the thread can now be woken up
  if (pthread_cond_signal(&L1_proc_tx->cond) != 0) {
    LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB TXnp4 thread\n");
    exit_fun( "ERROR pthread_cond_signal" );
    return(-1);
  }
  
  pthread_mutex_unlock( &L1_proc_tx->mutex);

  return(0);
}

int wakeup_rxtx(PHY_VARS_eNB *eNB,RU_t *ru) {

  L1_proc_t *proc=&eNB->proc;
  RU_proc_t *ru_proc=&ru->proc;

  L1_rxtx_proc_t *L1_proc=&proc->L1_proc;
  

  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;

  int i;
  struct timespec wait;
  
  pthread_mutex_lock(&proc->mutex_RU);
  for (i=0;i<eNB->num_RU;i++) {
    if (ru == eNB->RU_list[i]) {
      if ((proc->RU_mask&(1<<i)) > 0)
	LOG_E(PHY,"eNB %d frame %d, subframe %d : previous information from RU %d (num_RU %d,mask %x) has not been served yet!\n",
	      eNB->Mod_id,proc->frame_rx,proc->subframe_rx,ru->idx,eNB->num_RU,proc->RU_mask);
      proc->RU_mask |= (1<<i);
    }
  }
  if (proc->RU_mask != (1<<eNB->num_RU)-1) {  // not all RUs have provided their information so return
    LOG_E(PHY,"Not all RUs have provided their info\n");
    pthread_mutex_unlock(&proc->mutex_RU);
    return(0);
  }
  else { // all RUs have provided their information so continue on and wakeup eNB processing
    proc->RU_mask = 0;
    pthread_mutex_unlock(&proc->mutex_RU);
  }




  wait.tv_sec=0;
  wait.tv_nsec=5000000L;

    
  if (L1_proc->instance_cnt == 0) {
    LOG_E(PHY,"Frame %d, subframe %d: RXTX0 thread busy, dropping\n",L1_proc->frame_rx,L1_proc->subframe_rx);
    return(-1);
  }

  // wake up TX for subframe n+sf_ahead
  // lock the TX mutex and make sure the thread is ready
  if (pthread_mutex_timedlock(&L1_proc->mutex,&wait) != 0) {
    LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB RXTX thread %d (IC %d)\n", L1_proc->subframe_rx&1,L1_proc->instance_cnt );
    exit_fun( "error locking mutex_rxtx" );
    return(-1);
  }
  

  ++L1_proc->instance_cnt;
  
  // We have just received and processed the common part of a subframe, say n. 
  // TS_rx is the last received timestamp (start of 1st slot), TS_tx is the desired 
  // transmitted timestamp of the next TX slot (first).
  // The last (TS_rx mod samples_per_frame) was n*samples_per_tti, 
  // we want to generate subframe (n+sf_ahead), so TS_tx = TX_rx+sf_ahead*samples_per_tti,
  // and proc->subframe_tx = proc->subframe_rx+sf_ahead
  L1_proc->timestamp_tx = ru_proc->timestamp_rx + (sf_ahead*fp->samples_per_tti);
  L1_proc->frame_rx     = ru_proc->frame_rx;
  L1_proc->subframe_rx  = ru_proc->subframe_rx;
  L1_proc->frame_tx     = (L1_proc->subframe_rx > (9-sf_ahead)) ? (L1_proc->frame_rx+1)&1023 : L1_proc->frame_rx;
  L1_proc->subframe_tx  = (L1_proc->subframe_rx + sf_ahead)%10;

  // the thread can now be woken up
  if (pthread_cond_signal(&L1_proc->cond) != 0) {
    LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB RXn-TXnp4 thread\n");
    exit_fun( "ERROR pthread_cond_signal" );
    return(-1);
  }
  
  pthread_mutex_unlock( &L1_proc->mutex);

  return(0);
}

void wakeup_prach_eNB(PHY_VARS_eNB *eNB,RU_t *ru,int frame,int subframe) {

  L1_proc_t *proc = &eNB->proc;
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
  int i;

  if (ru!=NULL) {
    pthread_mutex_lock(&proc->mutex_RU_PRACH);
    for (i=0;i<eNB->num_RU;i++) {
      if (ru == eNB->RU_list[i]) {
	LOG_D(PHY,"frame %d, subframe %d: RU %d for eNB %d signals PRACH (mask %x, num_RU %d)\n",frame,subframe,i,eNB->Mod_id,proc->RU_mask_prach,eNB->num_RU);
	if ((proc->RU_mask_prach&(1<<i)) > 0)
	  LOG_E(PHY,"eNB %d frame %d, subframe %d : previous information (PRACH) from RU %d (num_RU %d, mask %x) has not been served yet!\n",
		eNB->Mod_id,frame,subframe,ru->idx,eNB->num_RU,proc->RU_mask_prach);
	proc->RU_mask_prach |= (1<<i);
      }
    }
    if (proc->RU_mask_prach != (1<<eNB->num_RU)-1) {  // not all RUs have provided their information so return
      pthread_mutex_unlock(&proc->mutex_RU_PRACH);
      return;
    }
    else { // all RUs have provided their information so continue on and wakeup eNB processing
      proc->RU_mask_prach = 0;
      pthread_mutex_unlock(&proc->mutex_RU_PRACH);
    }
  }
    
  // check if we have to detect PRACH first
  if (is_prach_subframe(fp,frame,subframe)>0) { 
    LOG_D(PHY,"Triggering prach processing, frame %d, subframe %d\n",frame,subframe);
    if (proc->instance_cnt_prach == 0) {
      LOG_W(PHY,"[eNB] Frame %d Subframe %d, dropping PRACH\n", frame,subframe);
      return;
    }
    
    // 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->thread_index, proc->instance_cnt_prach);
      exit_fun( "error locking mutex_prach" );
      return;
    }
    
    ++proc->instance_cnt_prach;
    // set timing for prach thread
    proc->frame_prach = frame;
    proc->subframe_prach = subframe;
    
    // the thread 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;
    }
    
    pthread_mutex_unlock( &proc->mutex_prach );
  }

}

#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
void wakeup_prach_eNB_br(PHY_VARS_eNB *eNB,RU_t *ru,int frame,int subframe) {

  L1_proc_t *proc = &eNB->proc;
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
  int i;

  if (ru!=NULL) {
    pthread_mutex_lock(&proc->mutex_RU_PRACH_br);
    for (i=0;i<eNB->num_RU;i++) {
      if (ru == eNB->RU_list[i]) {
	LOG_D(PHY,"frame %d, subframe %d: RU %d for eNB %d signals PRACH BR (mask %x, num_RU %d)\n",frame,subframe,i,eNB->Mod_id,proc->RU_mask_prach_br,eNB->num_RU);
	if ((proc->RU_mask_prach_br&(1<<i)) > 0)
	  LOG_E(PHY,"eNB %d frame %d, subframe %d : previous information (PRACH BR) from RU %d (num_RU %d, mask %x) has not been served yet!\n",
		eNB->Mod_id,frame,subframe,ru->idx,eNB->num_RU,proc->RU_mask_prach_br);
	proc->RU_mask_prach_br |= (1<<i);
      }
    }
    if (proc->RU_mask_prach_br != (1<<eNB->num_RU)-1) {  // not all RUs have provided their information so return
      pthread_mutex_unlock(&proc->mutex_RU_PRACH_br);
      return;
    }
    else { // all RUs have provided their information so continue on and wakeup eNB processing
      proc->RU_mask_prach_br = 0;
      pthread_mutex_unlock(&proc->mutex_RU_PRACH_br);
    }
  }
    
  // check if we have to detect PRACH first
  if (is_prach_subframe(fp,frame,subframe)>0) { 
    LOG_D(PHY,"Triggering prach br processing, frame %d, subframe %d\n",frame,subframe);
    if (proc->instance_cnt_prach_br == 0) {
      LOG_W(PHY,"[eNB] Frame %d Subframe %d, dropping PRACH BR\n", frame,subframe);
      return;
    }
    
    // wake up thread for PRACH RX
    if (pthread_mutex_lock(&proc->mutex_prach_br) != 0) {
      LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB PRACH thread %d (IC %d)\n", proc->thread_index, proc->instance_cnt_prach_br);
      exit_fun( "error locking mutex_prach" );
      return;
    }
    
    ++proc->instance_cnt_prach_br;
    // set timing for prach thread
    proc->frame_prach_br = frame;
    proc->subframe_prach_br = subframe;
    
    // the thread can now be woken up
    if (pthread_cond_signal(&proc->cond_prach_br) != 0) {
      LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB PRACH BR thread %d\n", proc->thread_index);
      exit_fun( "ERROR pthread_cond_signal" );
      return;
    }
    
    pthread_mutex_unlock( &proc->mutex_prach_br );
  }

}
#endif


/*!
 * \brief The prach receive thread of eNB.
 * \param param is a \ref L1_proc_t structure which contains the info what to process.
 * \returns a pointer to an int. The storage is not on the heap and must not be freed.
 */
static void* eNB_thread_prach( void* param ) {
  static int eNB_thread_prach_status;


  PHY_VARS_eNB *eNB= (PHY_VARS_eNB *)param;
  L1_proc_t *proc = &eNB->proc;

  // set default return value
  eNB_thread_prach_status = 0;

  thread_top_init("eNB_thread_prach",1,500000,1000000,20000000);

  //wait_sync("eNB_thread_prach");

  while (!oai_exit) {
    

    
    if (wait_on_condition(&proc->mutex_prach,&proc->cond_prach,&proc->instance_cnt_prach,"eNB_prach_thread") < 0) break;
    if (oai_exit) break;

    LOG_D(PHY,"Running eNB prach procedures\n");
    prach_procedures(eNB
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
		     ,0
#endif
		     );
    
    if (release_thread(&proc->mutex_prach,&proc->instance_cnt_prach,"eNB_prach_thread") < 0) break;
  }

  LOG_I(PHY, "Exiting eNB thread PRACH\n");

  eNB_thread_prach_status = 0;
  return &eNB_thread_prach_status;
}

#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
/*!
 * \brief The prach receive thread of eNB for BL/CE UEs.
 * \param param is a \ref L1_proc_t structure which contains the info what to process.
 * \returns a pointer to an int. The storage is not on the heap and must not be freed.
 */
static void* eNB_thread_prach_br( void* param ) {
  static int eNB_thread_prach_status;


  PHY_VARS_eNB *eNB= (PHY_VARS_eNB *)param;
  L1_proc_t *proc = &eNB->proc;

  // set default return value
  eNB_thread_prach_status = 0;

  thread_top_init("eNB_thread_prach_br",1,500000,1000000,20000000);

  while (!oai_exit) {
    
    

    if (wait_on_condition(&proc->mutex_prach_br,&proc->cond_prach_br,&proc->instance_cnt_prach_br,"eNB_prach_thread_br") < 0) break;
    if (oai_exit) break;

    LOG_D(PHY,"Running eNB prach procedures for BL/CE UEs\n");
    prach_procedures(eNB,1);
    
    if (release_thread(&proc->mutex_prach_br,&proc->instance_cnt_prach_br,"eNB_prach_thread_br") < 0) break;
  }

  LOG_I(PHY, "Exiting eNB thread PRACH BR\n");

  eNB_thread_prach_status = 0;
  return &eNB_thread_prach_status;
}

#endif



extern void init_td_thread(PHY_VARS_eNB *);
extern void init_te_thread(PHY_VARS_eNB *);
extern void kill_td_thread(PHY_VARS_eNB *);
extern void kill_te_thread(PHY_VARS_eNB *);

static void* process_stats_thread(void* param) {

  PHY_VARS_eNB     *eNB      = (PHY_VARS_eNB*)param;

  wait_sync("process_stats_thread");

  while (!oai_exit) {
    sleep(1);
      if (opp_enabled == 1) {
	if ( eNB->ulsch_decoding_stats.trials>0) 
          print_meas(&eNB->ulsch_decoding_stats,"ulsch_decoding",NULL,NULL);
	if (eNB->dlsch_encoding_stats.trials >0) {
          print_meas(&eNB->dlsch_turbo_encoding_preperation_stats,"dlsch_coding_crc",NULL,NULL);
          print_meas(&eNB->dlsch_turbo_encoding_segmentation_stats,"dlsch_segmentation",NULL,NULL);
          print_meas(&eNB->dlsch_encoding_stats,"dlsch_encoding",NULL,NULL);
          print_meas(&eNB->dlsch_turbo_encoding_signal_stats,"coding_signal",NULL,NULL);
          print_meas(&eNB->dlsch_turbo_encoding_main_stats,"coding_main",NULL,NULL);
          print_meas(&eNB->dlsch_turbo_encoding_stats,"turbo_encoding",NULL,NULL);
          print_meas(&eNB->dlsch_interleaving_stats,"turbo_interleaving",NULL,NULL);
          print_meas(&eNB->dlsch_rate_matching_stats,"turbo_rate_matching",NULL,NULL);
          print_meas(&eNB->dlsch_turbo_encoding_waiting_stats,"coding_wait",NULL,NULL);
          print_meas(&eNB->dlsch_turbo_encoding_wakeup_stats0,"coding_worker_0",NULL,NULL);
          print_meas(&eNB->dlsch_turbo_encoding_wakeup_stats1,"coding_worker_1",NULL,NULL);
       }
       print_meas(&eNB->dlsch_modulation_stats,"dlsch_modulation",NULL,NULL);
     }
  }
  return(NULL);
}


void init_eNB_proc(int inst) {
  
  /*int i=0;*/
  int CC_id;
  PHY_VARS_eNB *eNB;
  L1_proc_t *proc;
  L1_rxtx_proc_t *L1_proc, *L1_proc_tx;
  pthread_attr_t *attr0=NULL,*attr1=NULL,*attr_prach=NULL;
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
  pthread_attr_t *attr_prach_br=NULL;
#endif

  LOG_I(PHY,"%s(inst:%d) RC.nb_CC[inst]:%d \n",__FUNCTION__,inst,RC.nb_CC[inst]);

  for (CC_id=0; CC_id<RC.nb_CC[inst]; CC_id++) {
    eNB = RC.eNB[inst][CC_id];
#ifndef OCP_FRAMEWORK
    LOG_I(PHY,"Initializing eNB processes instance:%d CC_id %d \n",inst,CC_id);
#endif
    proc = &eNB->proc;

    L1_proc                        = &proc->L1_proc;
    L1_proc_tx                     = &proc->L1_proc_tx;
    L1_proc->instance_cnt          = -1;
    L1_proc_tx->instance_cnt       = -1;
    L1_proc->instance_cnt_RUs      = 0;
    L1_proc_tx->instance_cnt_RUs   = 0;
    proc->instance_cnt_prach       = -1;
    proc->instance_cnt_asynch_rxtx = -1;
    proc->instance_cnt_synch       = -1;
    proc->CC_id                    = CC_id;    

    proc->first_rx                 =1;
    proc->first_tx                 =1;
    proc->RU_mask_tx               = (1<<eNB->num_RU)-1;
    proc->RU_mask                  =0;
    proc->RU_mask_prach            =0;

    pthread_mutex_init( &eNB->UL_INFO_mutex, NULL);
    pthread_mutex_init( &L1_proc->mutex, NULL);
    pthread_mutex_init( &L1_proc_tx->mutex, NULL);
    pthread_cond_init( &L1_proc->cond, NULL);
    pthread_cond_init( &L1_proc_tx->cond, NULL);
    pthread_mutex_init( &L1_proc->mutex_RUs, NULL);
    pthread_mutex_init( &L1_proc_tx->mutex_RUs, NULL);
    pthread_cond_init( &L1_proc->cond_RUs, NULL);
    pthread_cond_init( &L1_proc_tx->cond_RUs, NULL);

    pthread_mutex_init( &proc->mutex_prach, NULL);
    pthread_mutex_init( &proc->mutex_asynch_rxtx, NULL);
    pthread_mutex_init( &proc->mutex_RU,NULL);
    pthread_mutex_init( &proc->mutex_RU_tx,NULL);
    pthread_mutex_init( &proc->mutex_RU_PRACH,NULL);

    pthread_cond_init( &proc->cond_prach, NULL);
    pthread_cond_init( &proc->cond_asynch_rxtx, NULL);

    pthread_attr_init( &proc->attr_prach);
    pthread_attr_init( &proc->attr_asynch_rxtx);
    pthread_attr_init( &L1_proc->attr);
    pthread_attr_init( &L1_proc_tx->attr);
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
    proc->instance_cnt_prach_br    = -1;
    proc->RU_mask_prach_br=0;
    pthread_mutex_init( &proc->mutex_prach_br, NULL);
    pthread_mutex_init( &proc->mutex_RU_PRACH_br,NULL);
    pthread_cond_init( &proc->cond_prach_br, NULL);
    pthread_attr_init( &proc->attr_prach_br);
#endif
#ifndef DEADLINE_SCHEDULER
    attr0       = &L1_proc->attr;
    attr1       = &L1_proc_tx->attr;
    attr_prach  = &proc->attr_prach;
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
    attr_prach_br  = &proc->attr_prach_br;
#endif

    //    attr_td     = &proc->attr_td;
    //    attr_te     = &proc->attr_te; 
#endif

    if(get_thread_worker_conf() == WORKER_ENABLE)
    {
      init_te_thread(eNB);
      init_td_thread(eNB);
    }


    LOG_I(PHY,"eNB->single_thread_flag:%d\n", eNB->single_thread_flag);

    if ((get_thread_parallel_conf() == PARALLEL_RU_L1_SPLIT || get_thread_parallel_conf() == PARALLEL_RU_L1_TRX_SPLIT) && nfapi_mode!=2) {
      pthread_create( &L1_proc->pthread, attr0, L1_thread, proc );
      pthread_create( &L1_proc_tx->pthread, attr1, L1_thread_tx, proc);
    }
    pthread_create( &proc->pthread_prach, attr_prach, eNB_thread_prach, eNB );
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
    pthread_create( &proc->pthread_prach_br, attr_prach_br, eNB_thread_prach_br, eNB );
#endif

    AssertFatal(proc->instance_cnt_prach == -1,"instance_cnt_prach = %d\n",proc->instance_cnt_prach);
	

    if (opp_enabled == 1) pthread_create(&proc->process_stats_thread,NULL,process_stats_thread,(void*)eNB);

    
  }

  //for multiple CCs: setup master and slaves
  /* 
     for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
     eNB = PHY_vars_eNB_g[inst][CC_id];

     if (eNB->node_timing == synch_to_ext_device) { //master
     eNB->proc.num_slaves = MAX_NUM_CCs-1;
     eNB->proc.slave_proc = (L1_proc_t**)malloc(eNB->proc.num_slaves*sizeof(L1_proc_t*));

     for (i=0; i< eNB->proc.num_slaves; i++) {
     if (i < CC_id)  eNB->proc.slave_proc[i] = &(PHY_vars_eNB_g[inst][i]->proc);
     if (i >= CC_id)  eNB->proc.slave_proc[i] = &(PHY_vars_eNB_g[inst][i+1]->proc);
     }
     }
     }
  */

  /* setup PHY proc TX sync mechanism */
  pthread_mutex_init(&sync_phy_proc.mutex_phy_proc_tx, NULL);
  pthread_cond_init(&sync_phy_proc.cond_phy_proc_tx, NULL);
  sync_phy_proc.phy_proc_CC_id = 0;
  
  
}



/*!
 * \brief Terminate eNB TX and RX threads.
 */
void kill_eNB_proc(int inst) {

  int *status;
  PHY_VARS_eNB *eNB;
  L1_proc_t *proc;
  L1_rxtx_proc_t *L1_proc, *L1_proc_tx;

  for (int CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
    eNB=RC.eNB[inst][CC_id];
    
    proc        = &eNB->proc;
    L1_proc     = &proc->L1_proc;
    L1_proc_tx  = &proc->L1_proc_tx;

    if(get_thread_worker_conf() == WORKER_ENABLE) {
      kill_td_thread(eNB);
      kill_te_thread(eNB);
    }
    LOG_I(PHY, "Killing TX CC_id %d inst %d\n", CC_id, inst );

    if ((get_thread_parallel_conf() == PARALLEL_RU_L1_SPLIT || get_thread_parallel_conf() == PARALLEL_RU_L1_TRX_SPLIT) && nfapi_mode!=2) {
      pthread_mutex_lock(&L1_proc->mutex);
      L1_proc->instance_cnt = 0;
      pthread_cond_signal(&L1_proc->cond);
      pthread_mutex_unlock(&L1_proc->mutex);

      pthread_mutex_lock(&L1_proc_tx->mutex);
      L1_proc_tx->instance_cnt = 0;
      pthread_cond_signal(&L1_proc_tx->cond);
      pthread_mutex_unlock(&L1_proc_tx->mutex);
    }

    pthread_mutex_lock(&proc->mutex_prach);
    proc->instance_cnt_prach = 0;
    pthread_cond_signal( &proc->cond_prach );
    pthread_mutex_unlock(&proc->mutex_prach);

    pthread_cond_signal( &proc->cond_asynch_rxtx );
    pthread_cond_broadcast(&sync_phy_proc.cond_phy_proc_tx);

    LOG_D(PHY, "joining pthread_prach\n");
    pthread_join( proc->pthread_prach, (void**)&status );    

    LOG_I(PHY, "Destroying prach mutex/cond\n");
    pthread_mutex_destroy( &proc->mutex_prach );
    pthread_cond_destroy( &proc->cond_prach );
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
    proc->instance_cnt_prach_br = 0;
    pthread_cond_signal( &proc->cond_prach_br );
    pthread_join( proc->pthread_prach_br, (void**)&status );    
    pthread_mutex_destroy( &proc->mutex_prach_br );
    pthread_cond_destroy( &proc->cond_prach_br );
#endif
    LOG_I(PHY, "Destroying UL_INFO mutex\n");
    pthread_mutex_destroy(&eNB->UL_INFO_mutex);

    if ((get_thread_parallel_conf() == PARALLEL_RU_L1_SPLIT || get_thread_parallel_conf() == PARALLEL_RU_L1_TRX_SPLIT) && nfapi_mode!=2) {
      LOG_I(PHY, "Joining L1_proc mutex/cond\n");
      pthread_join( L1_proc->pthread, (void**)&status );
      LOG_I(PHY, "Joining L1_proc_tx mutex/cond\n");
      pthread_join( L1_proc_tx->pthread, (void**)&status );
    }
    LOG_I(PHY, "Destroying L1_proc mutex/cond\n");
    pthread_mutex_destroy( &L1_proc->mutex );
    pthread_cond_destroy( &L1_proc->cond );
    pthread_mutex_destroy( &L1_proc->mutex_RUs );
    pthread_cond_destroy( &L1_proc->cond_RUs );
    LOG_I(PHY, "Destroying L1_proc_tx mutex/cond\n");
    pthread_mutex_destroy( &L1_proc_tx->mutex );
    pthread_cond_destroy( &L1_proc_tx->cond );
    pthread_mutex_destroy( &L1_proc_tx->mutex_RUs );
    pthread_cond_destroy( &L1_proc_tx->cond_RUs );

    pthread_attr_destroy(&proc->attr_prach);
    pthread_attr_destroy(&proc->attr_asynch_rxtx);
    pthread_attr_destroy(&L1_proc->attr);
    pthread_attr_destroy(&L1_proc_tx->attr);
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
    pthread_mutex_destroy(&proc->mutex_RU_PRACH_br);
    pthread_attr_destroy(&proc->attr_prach_br);
#endif

  }
}




void reset_opp_meas(void) {

  int sfn;
  reset_meas(&softmodem_stats_mt);
  reset_meas(&softmodem_stats_hw);
  
  for (sfn=0; sfn < 10; sfn++) {
    reset_meas(&softmodem_stats_rxtx_sf);
    reset_meas(&softmodem_stats_rx_sf);
  }
}


void print_opp_meas(void) {

  int sfn=0;
  print_meas(&softmodem_stats_mt, "Main ENB Thread", NULL, NULL);
  print_meas(&softmodem_stats_hw, "HW Acquisation", NULL, NULL);
  
  for (sfn=0; sfn < 10; sfn++) {
    print_meas(&softmodem_stats_rxtx_sf,"[eNB][total_phy_proc_rxtx]",NULL, NULL);
    print_meas(&softmodem_stats_rx_sf,"[eNB][total_phy_proc_rx]",NULL,NULL);
  }
}

void free_transport(PHY_VARS_eNB *eNB)
{
  int i;
  int j;

  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
    LOG_D(PHY, "Freeing Transport Channel Buffers for DLSCH, UE %d\n",i);
    for (j=0; j<2; j++) free_eNB_dlsch(eNB->dlsch[i][j]);

    LOG_D(PHY, "Freeing Transport Channel Buffer for ULSCH, UE %d\n",i);
    free_eNB_ulsch(eNB->ulsch[1+i]);
  }
  free_eNB_ulsch(eNB->ulsch[0]);
}

void init_transport(PHY_VARS_eNB *eNB) {

  int i;
  int j;
  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;

  LOG_I(PHY, "Initialise transport\n");

  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
    LOG_D(PHY,"Allocating Transport Channel Buffers for DLSCH, UE %d\n",i);
    for (j=0; j<2; j++) {
      eNB->dlsch[i][j] = new_eNB_dlsch(1,8,NSOFT,fp->N_RB_DL,0,fp);
      if (!eNB->dlsch[i][j]) {
	LOG_E(PHY,"Can't get eNB dlsch structures for UE %d \n", i);
	exit(-1);
      } else {
	eNB->dlsch[i][j]->rnti=0;
	LOG_D(PHY,"dlsch[%d][%d] => %p rnti:%d\n",i,j,eNB->dlsch[i][j], eNB->dlsch[i][j]->rnti);
      }
    }
    
    LOG_D(PHY,"Allocating Transport Channel Buffer for ULSCH, UE %d\n",i);
    eNB->ulsch[1+i] = new_eNB_ulsch(MAX_TURBO_ITERATIONS,fp->N_RB_UL, 0);
    
    if (!eNB->ulsch[1+i]) {
      LOG_E(PHY,"Can't get eNB ulsch structures\n");
      exit(-1);
    }
    
    // this is the transmission mode for the signalling channels
    // this will be overwritten with the real transmission mode by the RRC once the UE is connected
    eNB->transmission_mode[i] = fp->nb_antenna_ports_eNB==1 ? 1 : 2;
  }
  // ULSCH for RA
  eNB->ulsch[0] = new_eNB_ulsch(MAX_TURBO_ITERATIONS, fp->N_RB_UL, 0);
  
  if (!eNB->ulsch[0]) {
    LOG_E(PHY,"Can't get eNB ulsch structures\n");
    exit(-1);
  }
  eNB->dlsch_SI  = new_eNB_dlsch(1,8,NSOFT,fp->N_RB_DL, 0, fp);
  LOG_D(PHY,"eNB %d.%d : SI %p\n",eNB->Mod_id,eNB->CC_id,eNB->dlsch_SI);
  eNB->dlsch_ra  = new_eNB_dlsch(1,8,NSOFT,fp->N_RB_DL, 0, fp);
  LOG_D(PHY,"eNB %d.%d : RA %p\n",eNB->Mod_id,eNB->CC_id,eNB->dlsch_ra);
  eNB->dlsch_MCH = new_eNB_dlsch(1,8,NSOFT,fp->N_RB_DL, 0, fp);
  LOG_D(PHY,"eNB %d.%d : MCH %p\n",eNB->Mod_id,eNB->CC_id,eNB->dlsch_MCH);
  
  
  eNB->rx_total_gain_dB=130;
  
  for(i=0; i<NUMBER_OF_UE_MAX; i++)
    eNB->mu_mimo_mode[i].dl_pow_off = 2;
  
  eNB->check_for_total_transmissions = 0;
  
  eNB->check_for_MUMIMO_transmissions = 0;
  
  eNB->FULL_MUMIMO_transmissions = 0;
  
  eNB->check_for_SUMIMO_transmissions = 0;
  
  fp->pucch_config_common.deltaPUCCH_Shift = 1;
    
} 

void init_eNB_afterRU(void) {

  int inst,CC_id,ru_id,i,aa;
  PHY_VARS_eNB *eNB;

  LOG_I(PHY,"%s() RC.nb_inst:%d\n", __FUNCTION__, RC.nb_inst);

  for (inst=0;inst<RC.nb_inst;inst++) {
    LOG_I(PHY,"RC.nb_CC[inst]:%d\n", RC.nb_CC[inst]);
    for (CC_id=0;CC_id<RC.nb_CC[inst];CC_id++) {

      LOG_I(PHY,"RC.nb_CC[inst:%d][CC_id:%d]:%p\n", inst, CC_id, RC.eNB[inst][CC_id]);

      eNB                                  =  RC.eNB[inst][CC_id];
      phy_init_lte_eNB(eNB,0,0);
      // map antennas and PRACH signals to eNB RX
      if (0) AssertFatal(eNB->num_RU>0,"Number of RU attached to eNB %d is zero\n",eNB->Mod_id);
      LOG_I(PHY,"Mapping RX ports from %d RUs to eNB %d\n",eNB->num_RU,eNB->Mod_id);
      eNB->frame_parms.nb_antennas_rx       = 0;

      LOG_I(PHY,"Overwriting eNB->prach_vars.rxsigF[0]:%p\n", eNB->prach_vars.rxsigF[0]);

      eNB->prach_vars.rxsigF[0] = (int16_t**)malloc16(64*sizeof(int16_t*));
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
      for (int ce_level=0;ce_level<4;ce_level++) {
        LOG_I(PHY,"Overwriting eNB->prach_vars_br.rxsigF.rxsigF[0]:%p\n", eNB->prach_vars_br.rxsigF[ce_level]);
        eNB->prach_vars_br.rxsigF[ce_level] = (int16_t**)malloc16(64*sizeof(int16_t*));
      }
#endif

      LOG_I(PHY,"eNB->num_RU:%d\n", eNB->num_RU);

      for (ru_id=0,aa=0;ru_id<eNB->num_RU;ru_id++) {
	eNB->frame_parms.nb_antennas_rx    += eNB->RU_list[ru_id]->nb_rx;

	AssertFatal(eNB->RU_list[ru_id]->common.rxdataF!=NULL,
		    "RU %d : common.rxdataF is NULL\n",
		    eNB->RU_list[ru_id]->idx);

	AssertFatal(eNB->RU_list[ru_id]->prach_rxsigF!=NULL,
		    "RU %d : prach_rxsigF is NULL\n",
		    eNB->RU_list[ru_id]->idx);

	for (i=0;i<eNB->RU_list[ru_id]->nb_rx;aa++,i++) { 
	  LOG_I(PHY,"Attaching RU %d antenna %d to eNB antenna %d\n",eNB->RU_list[ru_id]->idx,i,aa);
	  eNB->prach_vars.rxsigF[0][aa]    =  eNB->RU_list[ru_id]->prach_rxsigF[i];
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
	  for (int ce_level=0;ce_level<4;ce_level++)
	    eNB->prach_vars_br.rxsigF[ce_level][aa] = eNB->RU_list[ru_id]->prach_rxsigF_br[ce_level][i];
#endif
	  eNB->common_vars.rxdataF[aa]     =  eNB->RU_list[ru_id]->common.rxdataF[i];
	}
      }



      /* TODO: review this code, there is something wrong.
       * In monolithic mode, we come here with nb_antennas_rx == 0
       * (not tested in other modes).
       */
      if (eNB->frame_parms.nb_antennas_rx < 1)
      {
        LOG_I(PHY, "%s() ************* DJP ***** eNB->frame_parms.nb_antennas_rx:%d - GOING TO HARD CODE TO 1", __FUNCTION__, eNB->frame_parms.nb_antennas_rx);
        eNB->frame_parms.nb_antennas_rx = 1;
      }
      else
      {
        //LOG_I(PHY," Delete code\n");
      }

      if (eNB->frame_parms.nb_antennas_tx < 1)
      {
        LOG_I(PHY, "%s() ************* DJP ***** eNB->frame_parms.nb_antennas_tx:%d - GOING TO HARD CODE TO 1", __FUNCTION__, eNB->frame_parms.nb_antennas_tx);
        eNB->frame_parms.nb_antennas_tx = 1;
      }
      else
      {
        //LOG_I(PHY," Delete code\n");
      }




      AssertFatal(eNB->frame_parms.nb_antennas_rx >0,
		  "inst %d, CC_id %d : nb_antennas_rx %d\n",inst,CC_id,eNB->frame_parms.nb_antennas_rx);
      LOG_I(PHY,"inst %d, CC_id %d : nb_antennas_rx %d\n",inst,CC_id,eNB->frame_parms.nb_antennas_rx);

      init_transport(eNB);
      //init_precoding_weights(RC.eNB[inst][CC_id]);
    }
    init_eNB_proc(inst);
  }

  for (ru_id=0;ru_id<RC.nb_RU;ru_id++) {

    AssertFatal(RC.ru[ru_id]!=NULL,"ru_id %d is null\n",ru_id);
    
    RC.ru[ru_id]->wakeup_rxtx         = wakeup_rxtx;
    RC.ru[ru_id]->wakeup_prach_eNB    = wakeup_prach_eNB;
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
    RC.ru[ru_id]->wakeup_prach_eNB_br = wakeup_prach_eNB_br;
#endif
    RC.ru[ru_id]->eNB_top             = eNB_top;
  }
}

void init_eNB(int single_thread_flag,int wait_for_sync) {
  
  int CC_id;
  int inst;
  PHY_VARS_eNB *eNB;

  LOG_I(PHY,"[lte-softmodem.c] eNB structure about to allocated RC.nb_L1_inst:%d RC.nb_L1_CC[0]:%d\n",RC.nb_L1_inst,RC.nb_L1_CC[0]);

  if (RC.eNB == NULL) RC.eNB = (PHY_VARS_eNB***) malloc(RC.nb_L1_inst*sizeof(PHY_VARS_eNB **));
  LOG_I(PHY,"[lte-softmodem.c] eNB structure RC.eNB allocated\n");
  for (inst=0;inst<RC.nb_L1_inst;inst++) {
    if (RC.eNB[inst] == NULL) RC.eNB[inst] = (PHY_VARS_eNB**) malloc(RC.nb_CC[inst]*sizeof(PHY_VARS_eNB *));
    for (CC_id=0;CC_id<RC.nb_L1_CC[inst];CC_id++) {
      if (RC.eNB[inst][CC_id] == NULL) RC.eNB[inst][CC_id] = (PHY_VARS_eNB*) malloc(sizeof(PHY_VARS_eNB));
      eNB                     = RC.eNB[inst][CC_id]; 
      eNB->abstraction_flag   = 0;
      eNB->single_thread_flag = single_thread_flag;


      LOG_I(PHY,"Initializing eNB %d CC_id %d single_thread_flag:%d\n",inst,CC_id,single_thread_flag);
#ifndef OCP_FRAMEWORK
      LOG_I(PHY,"Initializing eNB %d CC_id %d\n",inst,CC_id);
#endif
      
      LOG_I(PHY,"Registering with MAC interface module\n");
      AssertFatal((eNB->if_inst         = IF_Module_init(inst))!=NULL,"Cannot register interface");
      eNB->if_inst->schedule_response   = schedule_response;
      eNB->if_inst->PHY_config_req      = phy_config_request;
      memset((void*)&eNB->UL_INFO,0,sizeof(eNB->UL_INFO));
      memset((void*)&eNB->Sched_INFO,0,sizeof(eNB->Sched_INFO));
      LOG_I(PHY,"Setting indication lists\n");
      eNB->UL_INFO.rx_ind.rx_indication_body.rx_pdu_list   = eNB->rx_pdu_list;
      eNB->UL_INFO.crc_ind.crc_indication_body.crc_pdu_list = eNB->crc_pdu_list;
      eNB->UL_INFO.sr_ind.sr_indication_body.sr_pdu_list = eNB->sr_pdu_list;
      eNB->UL_INFO.harq_ind.harq_indication_body.harq_pdu_list = eNB->harq_pdu_list;
      eNB->UL_INFO.cqi_ind.cqi_pdu_list = eNB->cqi_pdu_list;
      eNB->UL_INFO.cqi_ind.cqi_raw_pdu_list = eNB->cqi_raw_pdu_list;
      eNB->prach_energy_counter = 0;
    }

  }

  LOG_I(PHY,"[lte-softmodem.c] eNB structure allocated\n");
}


void stop_eNB(int nb_inst) {

  for (int inst=0;inst<nb_inst;inst++) {
    LOG_I(PHY,"Killing eNB %d processing threads\n",inst);
    kill_eNB_proc(inst);
  }
}