phy_procedures_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 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

/*! \file phy_procedures_lte_eNB.c
 * \brief Implementation of eNB procedures from 36.213 LTE specifications
 * \author R. Knopp, F. Kaltenberger, N. Nikaein, X. Foukas
 * \date 2011
 * \version 0.1
 * \company Eurecom
 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr,navid.nikaein@eurecom.fr, x.foukas@sms.ed.ac.uk
 * \note
 * \warning
 */

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

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

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

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

#include "T.h"

#include "assertions.h"
#include "msc.h"

#include <time.h>

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


#if defined(FLEXRAN_AGENT_SB_IF)
//Agent-related headers
#include "ENB_APP/flexran_agent_extern.h"
#include "ENB_APP/CONTROL_MODULES/MAC/flexran_agent_mac.h"
#include "LAYER2/MAC/flexran_agent_mac_proto.h"
#endif

//#define DIAG_PHY

#define NS_PER_SLOT 500000

#define PUCCH 1

void exit_fun(const char* s);

extern int exit_openair;

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

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)));
int *eNB_sync_buffer[2] = {eNB_sync_buffer0, eNB_sync_buffer1};

extern uint16_t hundred_times_log10_NPRB[100];

unsigned int max_peak_val;
int max_sync_pos;

int harq_pid_updated[NUMBER_OF_UE_MAX][8] = {{0}};
int harq_pid_round[NUMBER_OF_UE_MAX][8] = {{0}};

//DCI_ALLOC_t dci_alloc[8];

#ifdef EMOS
fifo_dump_emos_eNB emos_dump_eNB;
#endif

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

#ifdef DIAG_PHY
extern int rx_sig_fifo;
#endif

uint8_t is_SR_subframe(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,uint8_t UE_id)
{

  const int subframe = proc->subframe_rx;
  const int frame = proc->frame_rx;

  LOG_D(PHY,"[eNB %d][SR %x] Frame %d subframe %d Checking for SR TXOp(sr_ConfigIndex %d)\n",
        eNB->Mod_id,eNB->ulsch[UE_id]->rnti,frame,subframe,
        eNB->scheduling_request_config[UE_id].sr_ConfigIndex);

  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)
      return(1);
  } 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))
      return(1);
  } 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))
      return(1);
  } 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))
      return(1);
  } 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))
      return(1);
  }

  return(0);
}


int32_t add_ue(int16_t rnti, PHY_VARS_eNB *eNB)
{
  uint8_t i;


  LOG_D(PHY,"[eNB %d/%d] Adding UE with rnti %x\n",
        eNB->Mod_id,
        eNB->CC_id,
        (uint16_t)rnti);

  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
    if ((eNB->dlsch[i]==NULL) || (eNB->ulsch[i]==NULL)) {
      MSC_LOG_EVENT(MSC_PHY_ENB, "0 Failed add ue %"PRIx16" (ENOMEM)", rnti);
      LOG_E(PHY,"Can't add UE, not enough memory allocated\n");
      return(-1);
    } else {
      if (eNB->UE_stats[i].crnti==0) {
        MSC_LOG_EVENT(MSC_PHY_ENB, "0 Add ue %"PRIx16" ", rnti);
        LOG_D(PHY,"UE_id %d associated with rnti %x\n",i, (uint16_t)rnti);
        eNB->dlsch[i][0]->rnti = rnti;
        eNB->ulsch[i]->rnti = rnti;
        eNB->UE_stats[i].crnti = rnti;

	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));
	LOG_D(PHY,"Initializing Po_PUCCH: p0_NominalPUCCH %d, gain %d => %d\n",
	      eNB->frame_parms.ul_power_control_config_common.p0_NominalPUCCH,
	      eNB->rx_total_gain_dB,
	      eNB->UE_stats[i].Po_PUCCH);
  
        return(i);
      }
    }
  }
  return(-1);
}

int mac_phy_remove_ue(module_id_t Mod_idP,rnti_t rntiP) {
  uint8_t i;
  int CC_id;
  PHY_VARS_eNB *eNB;

  for (CC_id=0;CC_id<MAX_NUM_CCs;CC_id++) {
    eNB = PHY_vars_eNB_g[Mod_idP][CC_id];
    for (i=0; i<NUMBER_OF_UE_MAX; i++) {
      if ((eNB->dlsch[i]==NULL) || (eNB->ulsch[i]==NULL)) {
	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 {
	if (eNB->UE_stats[i].crnti==rntiP) {
	  MSC_LOG_EVENT(MSC_PHY_ENB, "0 Removed ue %"PRIx16" ", rntiP);

	  LOG_D(PHY,"eNB %d removing UE %d with rnti %x\n",eNB->Mod_id,i,rntiP);

	  //LOG_D(PHY,("[PHY] UE_id %d\n",i);
	  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));
	  //  mac_exit_wrapper("Removing UE");
	  

	  return(i);
	}
      }
    }
  }
  MSC_LOG_EVENT(MSC_PHY_ENB, "0 Failed remove ue %"PRIx16" (not found)", rntiP);
  return(-1);
}

int8_t find_next_ue_index(PHY_VARS_eNB *eNB)
{
  uint8_t i;

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

  return(-1);
}

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 harq_flag)
{
  LTE_eNB_DLSCH_t *DLSCH_ptr;
  LTE_eNB_ULSCH_t *ULSCH_ptr;
  uint8_t ulsch_subframe,ulsch_frame;
  int i;
  int8_t UE_id = find_ue(rnti,PHY_vars_eNB_g[Mod_id][CC_id]);

  if (UE_id==-1) {
    LOG_D(PHY,"Cannot find UE with rnti %x (Mod_id %d, CC_id %d)\n",rnti, Mod_id, CC_id);
    *round=0;
    return(-1);
  }

  if ((harq_flag == openair_harq_DL) || (harq_flag == openair_harq_RA))  {// this is a DL request

    DLSCH_ptr = PHY_vars_eNB_g[Mod_id][CC_id]->dlsch[(uint32_t)UE_id][0];

    if (harq_flag == openair_harq_RA) {
      if (DLSCH_ptr->harq_processes[0] != NULL) {
	*harq_pid = 0;
	*round = DLSCH_ptr->harq_processes[0]->round;
	return 0;
      } else {
	return -1;
      }
    }

    /* let's go synchronous for the moment - maybe we can change at some point */
    i = (frame * 10 + subframe) % 8;

    if (DLSCH_ptr->harq_processes[i]->status == ACTIVE) {
      *harq_pid = i;
      *round = DLSCH_ptr->harq_processes[i]->round;
    } else if (DLSCH_ptr->harq_processes[i]->status == SCH_IDLE) {
      *harq_pid = i;
      *round = 0;
    } else {
      printf("%s:%d: bad state for harq process - PLEASE REPORT!!\n", __FILE__, __LINE__);
      abort();
    }
  } else { // This is a UL request

    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);
    // Note this is for TDD configuration 3,4,5 only
    *harq_pid = subframe2harq_pid(&PHY_vars_eNB_g[Mod_id][CC_id]->frame_parms,
                                  ulsch_frame,
                                  ulsch_subframe);
    *round    = ULSCH_ptr->harq_processes[*harq_pid]->round;
    LOG_T(PHY,"[eNB %d][PUSCH %d] Frame %d subframe %d Checking HARQ, round %d\n",Mod_id,*harq_pid,frame,subframe,*round);
  }

  return(0);
}

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

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

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

}
#endif



void phy_procedures_eNB_S_RX(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,relaying_type_t r_type)
{
  UNUSED(r_type);
  int subframe = proc->subframe_rx;

#ifdef DEBUG_PHY_PROC
  LOG_D(PHY,"[eNB %d] Frame %d: Doing phy_procedures_eNB_S_RX(%d)\n", eNB->Mod_id,proc->frame_rx, subframe);
#endif


  if (eNB->abstraction_flag == 0) {
    lte_eNB_I0_measurements(eNB,
			    subframe,
                            0,
                            eNB->first_run_I0_measurements);
  }

#ifdef PHY_ABSTRACTION
  else {
    lte_eNB_I0_measurements_emul(eNB,
                                 0);
  }

#endif


}



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

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

  last_subframe_emos=0;




#ifdef EMOS_CHANNEL

  //if (last_slot%2==1) // this is for all UL subframes
  if (subframe==3)
    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));
    }

#endif

  if (subframe==4) {
    emos_dump_eNB.timestamp = rt_get_time_ns();
    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],
           sizeof(PHY_MEASUREMENTS_eNB));
    memcpy(&emos_dump_eNB.UE_stats[0],&eNB->UE_stats[0],NUMBER_OF_UE_MAX*sizeof(LTE_eNB_UE_stats));

    bytes = rtf_put(CHANSOUNDER_FIFO_MINOR, &emos_dump_eNB, sizeof(fifo_dump_emos_eNB));

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


#define AMP_OVER_SQRT2 ((AMP*ONE_OVER_SQRT2_Q15)>>15)
#define AMP_OVER_2 (AMP>>1)
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)};



unsigned int taus(void);
DCI_PDU DCI_pdu_tmp;


void pmch_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,PHY_VARS_RN *rn,relaying_type_t r_type) {


#ifdef Rel10
  MCH_PDU *mch_pduP;
  MCH_PDU  mch_pdu;
  //  uint8_t sync_area=255;
#endif

  int subframe = proc->subframe_tx;

  if (eNB->abstraction_flag==0) {
    // This is DL-Cell spec pilots in Control region
    generate_pilots_slot(eNB,
			 eNB->common_vars.txdataF[0],
			 AMP,
			 subframe<<1,1);
  }
  
#ifdef Rel10
  // 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,
				    proc->frame_tx,
				    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",
	    eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->mcs,
	    eNB->dlsch_MCH->harq_processes[0]->TBS>>3);
    else {
      LOG_D(PHY,"[DeNB %"PRIu8"] Frame %d subframe %d : Do not transmit MCH pdu for MBSFN sync area %"PRIu8" (%s)\n",
	    eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->sync_area,
	    (mch_pduP->Pdu_size == 0)? "Empty MCH PDU":"Let RN transmit for the moment");
      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);
    } else {
      mch_pduP=NULL;
    }
    
    rn->mch_avtive[subframe]=0;
    break;
    
  default:
    LOG_W(PHY,"[eNB %"PRIu8"] Frame %d subframe %d: unknown relaying type %d \n",
	  eNB->Mod_id,proc->frame_tx,subframe,r_type);
    mch_pduP=NULL;
    break;
  }// switch
  
  if (mch_pduP) {
    fill_eNB_dlsch_MCH(eNB,mch_pduP->mcs,1,0);
    // Generate PMCH
    generate_mch(eNB,proc,(uint8_t*)mch_pduP->payload);
  } else {
    LOG_D(PHY,"[eNB/RN] Frame %d subframe %d: MCH not generated \n",proc->frame_tx,subframe);
  }
  
#endif
}

void common_signal_procedures (PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc) {

  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
  int **txdataF = eNB->common_vars.txdataF[0];
  uint8_t *pbch_pdu=&eNB->pbch_pdu[0];
  int subframe = proc->subframe_tx;
  int frame = proc->frame_tx;

  // generate Cell-Specific Reference Signals for both slots
  if (eNB->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);
  }    

  // First half of PSS/SSS (FDD, slot 0)
  if (subframe == 0) {
    if ((fp->frame_type == FDD) &&
	(eNB->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);
      
    }
    
    // generate PBCH (Physical Broadcast CHannel) info
    if ((frame&3) == 0) {
      pbch_pdu[2] = 0;
      
      // FIXME setting pbch_pdu[2] to zero makes the switch statement easier: remove all the or-operators
      switch (fp->N_RB_DL) {
      case 6:
	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (0<<5);
	break;
	
      case 15:
	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (1<<5);
	break;
	
      case 25:
	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (2<<5);
	break;
	
      case 50:
	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (3<<5);
	break;
	
      case 75:
	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (4<<5);
	break;
	
      case 100:
	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (5<<5);
	break;
	
      default:
	// FIXME if we get here, this should be flagged as an error, right?
	pbch_pdu[2] = (pbch_pdu[2]&0x1f) | (2<<5);
	break;
      }
      
      pbch_pdu[2] = (pbch_pdu[2]&0xef) |
	((fp->phich_config_common.phich_duration << 4)&0x10);
      
      switch (fp->phich_config_common.phich_resource) {
      case oneSixth:
	pbch_pdu[2] = (pbch_pdu[2]&0xf3) | (0<<2);
	break;
	
      case half:
	pbch_pdu[2] = (pbch_pdu[2]&0xf3) | (1<<2);
	break;
	
      case one:
	pbch_pdu[2] = (pbch_pdu[2]&0xf3) | (2<<2);
	break;
	
      case two:
	pbch_pdu[2] = (pbch_pdu[2]&0xf3) | (3<<2);
	break;
	
      default:
	// unreachable
	break;
      }
      
      pbch_pdu[2] = (pbch_pdu[2]&0xfc) | ((frame>>8)&0x3);
      pbch_pdu[1] = frame&0xfc;
      pbch_pdu[0] = 0;
    }
      
    /// First half of SSS (TDD, slot 1)
    
    if ((fp->frame_type == TDD)&&
	(eNB->abstraction_flag==0)){
      generate_sss(txdataF,
		   AMP,
		   fp,
		   (fp->Ncp==NORMAL) ? 6 : 5,
		   1);
    }

    /// generate PBCH
    if (eNB->abstraction_flag==0) {
      generate_pbch(&eNB->pbch,
                    txdataF,
                    AMP,
                    fp,
                    pbch_pdu,
                    frame&3);
    }
#ifdef PHY_ABSTRACTION
    else {
      generate_pbch_emul(eNB,pbch_pdu);
    }
#endif

  }
  else if ((subframe == 1) &&
	   (fp->frame_type == TDD)&&
	   (eNB->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) &&
	   (eNB->abstraction_flag==0)) {
    generate_pss(txdataF,
		 AMP,
		 &eNB->frame_parms,
		 (fp->Ncp==NORMAL) ? 6 : 5,
		 10);
    generate_sss(txdataF,
		 AMP,
		 &eNB->frame_parms,
		 (fp->Ncp==NORMAL) ? 5 : 4,
		 10);

  }

  //  Second-half of SSS (TDD, slot 11)
  else if ((subframe == 5) &&
	   (fp->frame_type == TDD) &&
	   (eNB->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) &&
	   (eNB->abstraction_flag==0)) {
    generate_pss(txdataF,
		 AMP,
		 fp,
		 2,
		 12);
  }

}

void generate_eNB_dlsch_params(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,DCI_ALLOC_t *dci_alloc,const int UE_id) {

  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
  int frame = proc->frame_tx;
  int subframe = proc->subframe_tx;

  // 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,
				       &eNB->dlsch_SI,
				       fp,
				       eNB->pdsch_config_dedicated,
				       SI_RNTI,
				       0,
				       P_RNTI,
				       eNB->UE_stats[0].DL_pmi_single,
				       0);
    
    
    eNB->dlsch_SI->nCCE[subframe] = dci_alloc->firstCCE;
    
    LOG_T(PHY,"[eNB %"PRIu8"] Frame %d subframe %d : CCE resource for common DCI (SI)  => %"PRIu8"\n",eNB->Mod_id,frame,subframe,
	  eNB->dlsch_SI->nCCE[subframe]);
    
#if defined(SMBV) 
    
    // configure SI DCI
    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);
      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,
				       &eNB->dlsch_ra,
				       fp,
				       eNB->pdsch_config_dedicated,
				       SI_RNTI,
				       dci_alloc->rnti,
				       P_RNTI,
				       eNB->UE_stats[0].DL_pmi_single,
				       0);
    
    
    eNB->dlsch_ra->nCCE[subframe] = dci_alloc->firstCCE;
    
    LOG_D(PHY,"[eNB %"PRIu8"] Frame %d subframe %d : CCE resource for common DCI (RA)  => %"PRIu8"\n",eNB->Mod_id,frame,subframe,
	  eNB->dlsch_ra->nCCE[subframe]);
#if defined(SMBV) 
    
    // configure RA DCI
    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);
      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
      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,
              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,
					 eNB->dlsch[(uint8_t)UE_id],
					 fp,
					 eNB->pdsch_config_dedicated,
					 SI_RNTI,
					 0,
					 P_RNTI,
					 eNB->UE_stats[(uint8_t)UE_id].DL_pmi_single,
					 eNB->transmission_mode[(uint8_t)UE_id]<7?0:eNB->transmission_mode[(uint8_t)UE_id]);
      LOG_D(PHY,"[eNB %"PRIu8"][PDSCH %"PRIx16"/%"PRIu8"] Frame %d subframe %d: Generated dlsch params\n",
	    eNB->Mod_id,dci_alloc->rnti,eNB->dlsch[(uint8_t)UE_id][0]->current_harq_pid,frame,subframe);
      
      
      T(T_ENB_PHY_DLSCH_UE_DCI, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe), T_INT(UE_id),
        T_INT(dci_alloc->rnti), T_INT(dci_alloc->format),
        T_INT(eNB->dlsch[(int)UE_id][0]->current_harq_pid),
        T_INT(eNB->dlsch[(int)UE_id][0]->harq_processes[eNB->dlsch[(int)UE_id][0]->current_harq_pid]->mcs),
        T_INT(eNB->dlsch[(int)UE_id][0]->harq_processes[eNB->dlsch[(int)UE_id][0]->current_harq_pid]->TBS));

      eNB->dlsch[(uint8_t)UE_id][0]->nCCE[subframe] = dci_alloc->firstCCE;
      
      LOG_D(PHY,"[eNB %"PRIu8"] Frame %d subframe %d : CCE resource for ue DCI (PDSCH %"PRIx16")  => %"PRIu8"\n",eNB->Mod_id,frame,subframe,
	    dci_alloc->rnti,eNB->dlsch[(uint8_t)UE_id][0]->nCCE[subframe]);
      
#if defined(SMBV) 
      
      // configure UE-spec DCI
      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);
	smbv_configure_ue_spec_dci(smbv_fname,(smbv_frame_cnt*10) + (subframe), UE_id+1,dci_alloc, i);
      }
      
#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,
	    frame, subframe,UE_id,
	    dci_alloc->format,
	    1<<dci_alloc->L);
    } else {