oaisim.c 38.9 KB
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#include <string.h>
#include <math.h>
#include <unistd.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <cblas.h>
#include <execinfo.h>

#include "SIMULATION/RF/defs.h"
#include "PHY/types.h"
#include "PHY/defs.h"
#include "PHY/LTE_TRANSPORT/proto.h"
#include "PHY/vars.h"
#include "MAC_INTERFACE/vars.h"

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#include "SIMULATION/ETH_TRANSPORT/proto.h"

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//#ifdef OPENAIR2
#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/vars.h"
#ifndef CELLULAR
#include "RRC/LITE/vars.h"
#endif
#include "PHY_INTERFACE/vars.h"
//#endif

#include "ARCH/CBMIMO1/DEVICE_DRIVER/vars.h"

#ifdef IFFT_FPGA
//#include "PHY/LTE_REFSIG/mod_table.h"
#endif //IFFT_FPGA

#include "SCHED/defs.h"
#include "SCHED/vars.h"

#ifdef XFORMS
#include "PHY/TOOLS/lte_phy_scope.h"
#endif

#ifdef SMBV
#include "PHY/TOOLS/smbv.h"
char smbv_fname[] = "smbv_config_file.smbv";
unsigned short smbv_nframes = 4; // how many frames to configure 1,..,4
unsigned short config_frames[4] = {2,9,11,13};
// unsigned short config_frames[4] = {1};
unsigned char  smbv_frame_cnt = 0;
u8 config_smbv = 0;
char smbv_ip[16];
#endif

#include "oaisim_functions.h"

#include "oaisim.h"
#include "oaisim_config.h"
#include "UTIL/OCG/OCG_extern.h"
#include "cor_SF_sim.h"
#include "UTIL/OMG/omg_constants.h"
#include "UTIL/FIFO/pad_list.h"


//#ifdef PROC
#include "../PROC/interface.h"
#include "../PROC/channel_sim_proc.h"
#include "../PROC/Tsync.h"
#include "../PROC/Process.h"
//#endif

#include "UTIL/LOG/vcd_signal_dumper.h"

#define RF

//#define DEBUG_SIM

#define MCS_COUNT 24//added for PHY abstraction
#define N_TRIALS 1

/*
  DCI0_5MHz_TDD0_t          UL_alloc_pdu;
  DCI1A_5MHz_TDD_1_6_t      CCCH_alloc_pdu;
  DCI2_5MHz_2A_L10PRB_TDD_t DLSCH_alloc_pdu1;
  DCI2_5MHz_2A_M10PRB_TDD_t DLSCH_alloc_pdu2;
 */

#define UL_RB_ALLOC computeRIV(lte_frame_parms->N_RB_UL,0,24)
#define CCCH_RB_ALLOC computeRIV(lte_frame_parms->N_RB_UL,0,3)
#define RA_RB_ALLOC computeRIV(lte_frame_parms->N_RB_UL,0,3)
#define DLSCH_RB_ALLOC 0x1fff

#define DECOR_DIST 100
#define SF_VAR 10

//constant for OAISIM soft realtime calibration
#define SF_DEVIATION_OFFSET_NS 100000 //= 0.1ms : should be as a number of UE
#define SLEEP_STEP_US       100 //  = 0.01ms could be adaptive, should be as a number of UE
#define K 2                  // averaging coefficient 
#define TARGET_SF_TIME_NS 1000000       // 1ms = 1000000 ns

//#ifdef OPENAIR2
//u16 NODE_ID[1];
//u8 NB_INST = 2;
//#endif //OPENAIR2
u32 frame=0;
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//int eMBMS_active = 0;
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char stats_buffer[16384];
channel_desc_t *eNB2UE[NUMBER_OF_eNB_MAX][NUMBER_OF_UE_MAX];
channel_desc_t *UE2eNB[NUMBER_OF_UE_MAX][NUMBER_OF_eNB_MAX];
//Added for PHY abstraction
node_desc_t *enb_data[NUMBER_OF_eNB_MAX]; 
node_desc_t *ue_data[NUMBER_OF_UE_MAX];
// Added for PHY abstraction
extern Node_list ue_node_list;
extern Node_list enb_node_list;
extern int pdcp_period, omg_period;

extern double **s_re, **s_im, **r_re, **r_im, **r_re0, **r_im0;
int map1,map2;
extern double **ShaF;
double snr_dB, sinr_dB,snr_direction;//,sinr_direction;
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extern double snr_step;
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extern u8 set_sinr;//,set_snr=0;
extern u8 ue_connection_test;
extern u8 set_seed;
u8 cooperation_flag;          // for cooperative communication
extern u8 target_dl_mcs;
extern u8 target_ul_mcs;
u8 rate_adaptation_flag;
extern u8 abstraction_flag, ethernet_flag;
extern u16 Nid_cell;
extern struct timespec time_spec;
extern unsigned long time_last, time_now;
extern int td, td_avg, sleep_time_us;
extern LTE_DL_FRAME_PARMS *frame_parms;
//double sinr_bler_map[MCS_COUNT][2][16];
//double sinr_bler_map_up[MCS_COUNT][2][16];
//extern double SINRpost_eff[301];
//extern int mcsPost; 
//extern int  nrbPost; 
//extern int frbPost;
//extern void kpi_gen();

#ifdef XFORMS
int otg_enabled;
#endif

// this should reflect the channel models in openair1/SIMULATION/TOOLS/defs.h
mapping small_scale_names[] = {
  {"custom", custom},
  {"SCM_A", SCM_A},
  {"SCM_B", SCM_B},
  {"SCM_C", SCM_C},
  {"SCM_D", SCM_D},
  {"EPA", EPA},
  {"EVA", EVA},
  {"ETU", ETU},
  {"Rayleigh8", Rayleigh8},
  {"Rayleigh1", Rayleigh1},
  {"Rayleigh1_800", Rayleigh1_800},
  {"Rayleigh1_corr", Rayleigh1_corr},
  {"Rayleigh1_anticorr", Rayleigh1_anticorr},
  {"Rice8", Rice8},
  {"Rice1", Rice1},
  {"Rice1_corr", Rice1_corr},
  {"Rice1_anticorr", Rice1_anticorr},
  {"AWGN", AWGN},
  {NULL, -1}
};

//static void *sigh(void *arg);
void terminate(void);

void 
help (void) {
  printf
      ("Usage: oaisim -h -a -F -C tdd_config -V -R N_RB_DL -e -x transmission_mode -m target_dl_mcs -r(ate_adaptation) -n n_frames -s snr_dB -k ricean_factor -t max_delay -f forgetting factor -A channel_model -z cooperation_flag -u nb_local_ue -U UE mobility -b nb_local_enb -B eNB_mobility -M ethernet_flag -p nb_master -g multicast_group -l log_level -c ocg_enable -T traffic model -D multicast network device\n");

  printf ("-h provides this help message!\n");
  printf ("-a Activates PHY abstraction mode\n");
  printf ("-A set the multipath channel simulation,  options are: SCM_A, SCM_B, SCM_C, SCM_D, EPA, EVA, ETU, Rayleigh8, Rayleigh1, Rayleigh1_corr,Rayleigh1_anticorr, Rice8,, Rice1, AWGN \n");
  printf ("-b Set the number of local eNB\n");
  printf ("-B Set the mobility model for eNB, options are: STATIC, RWP, RWALK, \n");
  printf ("-c [1,2,3,4] Activate the config generator (OCG) to process the scenario descriptor, or give the scenario manually: -c template_1.xml \n");
  printf ("-C [0-6] Sets TDD configuration\n");
  printf ("-e Activates extended prefix mode\n");
  printf ("-E Random number generator seed\n"); 
  printf ("-f Set the forgetting factor for time-variation\n");
  printf ("-F Activates FDD transmission (TDD is default)\n");
  printf ("-g Set multicast group ID (0,1,2,3) - valid if M is set\n");
  printf ("-G Enable background traffic \n");
  printf ("-I Enable CLI interface (to connect use telnet localhost 1352)\n");
  printf ("-k Set the Ricean factor (linear)\n");
  printf ("-l Set the global log level (8:trace, 7:debug, 6:info, 4:warn, 3:error) \n");
  printf ("-L [0-1] 0 to disable new link adaptation, 1 to enable new link adapatation\n");
  printf ("-m Gives a fixed DL mcs\n");
  printf ("-M Set the machine ID for Ethernet-based emulation\n");
  printf ("-n Set the number of frames for the simulation\n");
  printf ("-O [mme ipv4 address] Enable MME mode\n");
  printf ("-p Set the total number of machine in emulation - valid if M is set\n");
  printf ("-P [trace type] Enable protocol analyzer. Possible values for OPT:\n");
  printf ("    - wireshark: Enable tracing of layers above PHY using an UDP socket\n");
  printf ("    - pcap:      Enable tracing of layers above PHY to a pcap file\n");
  printf ("    - tshark:    Not implemented yet\n");
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  printf ("-Q Activate and set the MBMS service: 0 : not used (default eMBMS disabled), 1: eMBMS and RRC Connection enabled, 2: eMBMS relaying and RRC Connection enabled, 3: eMBMS enabled, RRC Connection disabled, 4: eMBMS relaying enabled, RRC Connection disabled\n");
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  printf ("-R [6,15,25,50,75,100] Sets N_RB_DL\n");
  printf ("-r Activates rate adaptation (DL for now)\n");
  printf ("-s snr_dB set a fixed (average) SNR, this deactivates the openair channel model generator (OCM)\n");
  printf ("-S snir_dB set a fixed (average) SNIR, this deactivates the openair channel model generator (OCM)\n");
  printf ("-t Set the delay spread (microseconds)\n");
  printf ("-T activate the traffic generator: cbr, mcbr, bcbr, mscbr \n");
  printf ("-u Set the number of local UE\n");
  printf ("-U Set the mobility model for UE, options are: STATIC, RWP, RWALK \n");
  printf ("-V Enable VCD dump, file = openair_vcd_dump.vcd\n");
  printf ("-w number of CBA groups, if not specified or zero, CBA is inactive\n");
  printf ("-W IP address to connect to SMBV and configure SMBV from config file. Requires compilation with SMBV=1, -W0 uses default IP 192.168.12.201\n");
  printf ("-x Set the transmission mode (1,2,5,6 supported for now)\n");
  printf ("-Y Set the global log verbosity (none, low, medium, high, full) \n");
  printf ("-z Set the cooperation flag (0 for no cooperation, 1 for delay diversity and 2 for distributed alamouti\n");
  printf ("-Z Reserved\n");
}

pthread_t log_thread;

void log_thread_init() {
  //create log_list
  //log_list_init(&log_list);
#ifndef LOG_NO_THREAD

  log_shutdown = 0;

  if((pthread_mutex_init(&log_lock, NULL) != 0) || (pthread_cond_init(&log_notify, NULL) != 0)) {
    return;
  }

  if (pthread_create(&log_thread, NULL, log_thread_function, (void*) NULL) != 0) {
    log_thread_finalize();
    return;
  }
#endif

}

//Call it after the last LOG call
int log_thread_finalize() {
  int err = 0;

#ifndef LOG_NO_THREAD

  if(pthread_mutex_lock(&log_lock) != 0) {
    return -1;
  }

  log_shutdown = 1;

  /* Wake up LOG thread */
  if((pthread_cond_broadcast(&log_notify) != 0) || (pthread_mutex_unlock(&log_lock) != 0)) {
    err = -1;
  }
  if(pthread_join(log_thread, NULL) != 0) {
    err = -1;
  }
  if(pthread_mutex_unlock(&log_lock) != 0) {
    err = -1;
  }

  if(!err) {
    //log_list_free(&log_list);
    pthread_mutex_lock(&log_lock);
    pthread_mutex_destroy(&log_lock);
    pthread_cond_destroy(&log_notify);
  }
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#endif

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  return err;
}


#ifdef OPENAIR2
int omv_write (int pfd,  Node_list enb_node_list, Node_list ue_node_list, Data_Flow_Unit omv_data){
  int i,j;
  omv_data.end=0;
  //omv_data.total_num_nodes = NB_UE_INST + NB_eNB_INST;
  for (i=0;i<NB_eNB_INST;i++) {
    if (enb_node_list != NULL) {
      omv_data.geo[i].x = (enb_node_list->node->X_pos < 0.0)? 0.0 : enb_node_list->node->X_pos;
      omv_data.geo[i].y = (enb_node_list->node->Y_pos < 0.0)? 0.0 : enb_node_list->node->Y_pos;
      omv_data.geo[i].z = 1.0;
      omv_data.geo[i].mobility_type = oai_emulation.info.omg_model_enb;
      omv_data.geo[i].node_type = 0; //eNB
      enb_node_list = enb_node_list->next;
      omv_data.geo[i].Neighbors=0;
      for (j=NB_eNB_INST; j< NB_UE_INST + NB_eNB_INST ; j++){
        if (is_UE_active(i,j - NB_eNB_INST ) == 1) {
          omv_data.geo[i].Neighbor[omv_data.geo[i].Neighbors]=  j; 
          omv_data.geo[i].Neighbors++; 
          LOG_D(OMG,"[eNB %d][UE %d] is_UE_active(i,j) %d geo (x%d, y%d) num neighbors %d\n", i,j-NB_eNB_INST, is_UE_active(i,j-NB_eNB_INST), 
                omv_data.geo[i].x, omv_data.geo[i].y, omv_data.geo[i].Neighbors);
        } 
      } 
    }
  }
  for (i=NB_eNB_INST;i<NB_UE_INST+NB_eNB_INST;i++) {
    if (ue_node_list != NULL) {
      omv_data.geo[i].x = (ue_node_list->node->X_pos < 0.0) ? 0.0 : ue_node_list->node->X_pos;
      omv_data.geo[i].y = (ue_node_list->node->Y_pos < 0.0) ? 0.0 : ue_node_list->node->Y_pos;
      omv_data.geo[i].z = 1.0;
      omv_data.geo[i].mobility_type = oai_emulation.info.omg_model_ue;
      omv_data.geo[i].node_type = 1; //UE
      //trial
      omv_data.geo[i].state = 1;
      omv_data.geo[i].rnti = 88;
      omv_data.geo[i].connected_eNB = 0;
      omv_data.geo[i].RSRP = 66;
      omv_data.geo[i].RSRQ = 55;
      omv_data.geo[i].Pathloss = 44;
      omv_data.geo[i].RSSI[0] = 33;
      omv_data.geo[i].RSSI[1] = 22;
      omv_data.geo[i].RSSI[2] = 11;
      
      ue_node_list = ue_node_list->next;
      omv_data.geo[i].Neighbors=0;
      for (j=0; j< NB_eNB_INST ; j++){
        if (is_UE_active(j,i-NB_eNB_INST) == 1) {
          omv_data.geo[i].Neighbor[ omv_data.geo[i].Neighbors]=j;       
          omv_data.geo[i].Neighbors++; 
          LOG_D(OMG,"[UE %d][eNB %d] is_UE_active  %d geo (x%d, y%d) num neighbors %d\n", i-NB_eNB_INST,j, is_UE_active(j,i-NB_eNB_INST), 
                omv_data.geo[i].x, omv_data.geo[i].y, omv_data.geo[i].Neighbors);
        } 
      }
    }
  }

  if( write( pfd, &omv_data, sizeof(struct Data_Flow_Unit) ) == -1 )
    perror( "write omv failed" );
  return 1;
}

void omv_end (int pfd, Data_Flow_Unit omv_data) {
  omv_data.end=1;
  if( write( pfd, &omv_data, sizeof(struct Data_Flow_Unit) ) == -1 )
    perror( "write omv failed" );
}
#endif 

Packet_OTG_List *otg_pdcp_buffer;

int
    main (int argc, char **argv)
{
  s32 i;
  // pointers signal buffers (s = transmit, r,r0 = receive)

  clock_t t;


  // Framing variables
  s32 slot, last_slot, next_slot;

  //FILE *SINRpost;
  //char SINRpost_fname[512];
  // sprintf(SINRpost_fname,"postprocSINR.m");
  //SINRpost = fopen(SINRpost_fname,"w");
  // variables/flags which are set by user on command-line

#ifdef SMBV
  strcpy(smbv_ip,DEFAULT_SMBV_IP);
#endif

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  s32 UE_id=0, eNB_id=0, RN_id=0;
  
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  relaying_type_t r_type=no_relay; // no relaying 
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  // time calibration for soft realtime mode  

  lte_subframe_t direction;

#ifdef OPENAIR2
  int pfd[2]; // fd for omv : fixme: this could be a local var
#endif   

  char fname[64],vname[64];
  // u8 awgn_flag = 0;
#ifdef XFORMS
  // current status is that every UE has a DL scope for a SINGLE eNB (eNB_id=0)
  // at eNB 0, an UL scope for every UE 
  FD_lte_phy_scope_ue  *form_ue[NUMBER_OF_UE_MAX];
  FD_lte_phy_scope_enb *form_enb[NUMBER_OF_UE_MAX];
  char title[255];
#endif

#ifdef PRINT_STATS
  int len;
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  FILE *UE_stats[NUMBER_OF_UE_MAX], *UE_stats_th[NUMBER_OF_UE_MAX], *eNB_stats[NUMBER_OF_eNB_MAX], *eNB_avg_thr, *eNB_l2_stats;
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  char UE_stats_filename[255];
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  char eNB_stats_filename[255];
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  char UE_stats_th_filename[255];
  char eNB_stats_th_filename[255];
 #endif


  //time_t t0,t1;
  //clock_t start, stop;
  

#ifdef OPENAIR2
  Data_Flow_Unit omv_data ;
#endif //ALU

#ifdef PROC
  int node_id;
  int port,Process_Flag=0,wgt,Channel_Flag=0,temp;
#endif
  //double **s_re2[MAX_eNB+MAX_UE], **s_im2[MAX_eNB+MAX_UE], **r_re2[MAX_eNB+MAX_UE], **r_im2[MAX_eNB+MAX_UE], **r_re02, **r_im02;
  //double **r_re0_d[MAX_UE][MAX_eNB], **r_im0_d[MAX_UE][MAX_eNB], **r_re0_u[MAX_eNB][MAX_UE],**r_im0_u[MAX_eNB][MAX_UE];
  //default parameters
  rate_adaptation_flag = 0;
  oai_emulation.info.n_frames = 0xffff;//1024;          //10;
  oai_emulation.info.n_frames_flag = 0;//fixme
  snr_dB = 30;
  cooperation_flag = 0;         // default value 0 for no cooperation, 1 for Delay diversity, 2 for Distributed Alamouti

  //Default values if not changed by the user in get_simulation_options();
  pdcp_period = 1;
  omg_period = 10;
  // start thread for log gen
  log_thread_init();

  init_oai_emulation(); // to initialize everything !!!
  
  // get command-line options
  get_simulation_options(argc, argv); //Command-line options

  // Initialize VCD LOG module
  vcd_signal_dumper_init("openair_dump.vcd");

  /*  pthread_t sigth;
  sigset_t sigblock;
  sigemptyset(&sigblock);
  sigaddset(&sigblock, SIGHUP);
  sigaddset(&sigblock, SIGINT);
  sigaddset(&sigblock, SIGTERM);
  pthread_sigmask(SIG_BLOCK, &sigblock, NULL);
  if (pthread_create(&sigth, NULL, sigh, NULL)) {
    msg("Pthread for tracing Signals is not created!\n");
    return -1;
  } else {
    msg("Pthread for tracing Signals is created!\n");
    }*/
  // configure oaisim with OCG
  oaisim_config(); // config OMG and OCG, OPT, OTG, OLG

#ifdef OPENAIR2
  init_omv();
#endif
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  //Before this call, NB_UE_INST and NB_eNB_INST are not set correctly
  check_and_adjust_params(); 
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  init_otg_pdcp_buffer();

#ifdef PRINT_STATS
  for (UE_id=0;UE_id<NB_UE_INST;UE_id++) {
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    sprintf(UE_stats_filename,"UE_stats%d.txt",UE_id);
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    UE_stats[UE_id] = fopen (UE_stats_filename, "w");
  }
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  for (eNB_id=0;eNB_id<NB_eNB_INST;eNB_id++) {
    sprintf(eNB_stats_filename,"eNB_stats%d.txt",eNB_id);
    eNB_stats[eNB_id] = fopen (eNB_stats_filename, "w");
  }
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  if(abstraction_flag==0){
    for (UE_id=0;UE_id<NB_UE_INST;UE_id++) {
      sprintf(UE_stats_th_filename,"UE_stats_th%d_tx%d.txt",UE_id,oai_emulation.info.transmission_mode);
      UE_stats_th[UE_id] = fopen (UE_stats_th_filename, "w");
    }
    sprintf(eNB_stats_th_filename,"eNB_stats_th_tx%d.txt",oai_emulation.info.transmission_mode);
    eNB_avg_thr = fopen (eNB_stats_th_filename, "w"); 
  } else{
    for (UE_id=0;UE_id<NB_UE_INST;UE_id++) {
      sprintf(UE_stats_th_filename,"UE_stats_abs_th%d_tx%d.txt",UE_id,oai_emulation.info.transmission_mode);
      UE_stats_th[UE_id] = fopen (UE_stats_th_filename, "w");
    }
    sprintf(eNB_stats_th_filename,"eNB_stats_abs_th_tx%d.txt",oai_emulation.info.transmission_mode);
    eNB_avg_thr = fopen (eNB_stats_th_filename, "w"); 
  } 
#ifdef OPENAIR2
    eNB_l2_stats = fopen ("eNB_l2_stats.txt", "w");
    LOG_I(EMU,"eNB_l2_stats=%p\n", eNB_l2_stats);
#endif 

#endif
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    if (NB_RN_INST > 0 ) {
      LOG_N(EMU,"Total number of RN %d (local %d, remote %d) mobility (the same as eNB) %s  \n", NB_RN_INST,oai_emulation.info.nb_rn_local,oai_emulation.info.nb_rn_remote, oai_emulation.topology_config.mobility.eNB_mobility.eNB_mobility_type.selected_option);
      
      LOG_N(EMU,"Adjust the number of eNB inst (%d->%d) and UE inst (%d->%d)\n ", 
	    NB_eNB_INST, NB_eNB_INST+NB_RN_INST,
	    NB_UE_INST, NB_UE_INST+NB_RN_INST);
      NB_eNB_INST+=NB_RN_INST;
      NB_UE_INST+=NB_RN_INST;
    }
    LOG_I(EMU,"Total number of UE %d (local %d, remote %d, relay %d) mobility %s \n", 
	  NB_UE_INST,oai_emulation.info.nb_ue_local,oai_emulation.info.nb_ue_remote, 
	  NB_RN_INST,
	  oai_emulation.topology_config.mobility.eNB_mobility.eNB_mobility_type.selected_option);
    
    LOG_I(EMU,"Total number of eNB %d (local %d, remote %d, relay %d) mobility %s \n", 
	  NB_eNB_INST,oai_emulation.info.nb_enb_local,oai_emulation.info.nb_enb_remote, 
	  NB_RN_INST,
	  oai_emulation.topology_config.mobility.UE_mobility.UE_mobility_type.selected_option);
  
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  LOG_I(OCM,"Running with frame_type %d, Nid_cell %d, N_RB_DL %d, EP %d, mode %d, target dl_mcs %d, rate adaptation %d, nframes %d, abstraction %d, channel %s\n",
        oai_emulation.info.frame_type, Nid_cell, oai_emulation.info.N_RB_DL, oai_emulation.info.extended_prefix_flag, oai_emulation.info.transmission_mode,target_dl_mcs,rate_adaptation_flag,oai_emulation.info.n_frames,abstraction_flag,oai_emulation.environment_system_config.fading.small_scale.selected_option);
  
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  set_seed = oai_emulation.emulation_config.seed.value;
  
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  init_seed(set_seed);

  init_openair1();

  init_openair2();

  init_ocm();

#ifdef XFORMS
  eNB_id = 0;
  for (UE_id = 0; UE_id < NB_UE_INST; UE_id++) {
      // DL scope at UEs
      fl_initialize (&argc, argv, NULL, 0, 0);
      form_ue[UE_id] = create_lte_phy_scope_ue();
      sprintf (title, "LTE DL SCOPE eNB %d to UE %d", eNB_id, UE_id);
      fl_show_form (form_ue[UE_id]->lte_phy_scope_ue, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);

      // UL scope at eNB 0
      fl_initialize (&argc, argv, NULL, 0, 0);
      form_enb[UE_id] = create_lte_phy_scope_enb();
      sprintf (title, "LTE UL SCOPE UE %d to eNB %d", UE_id, eNB_id);
      fl_show_form (form_enb[UE_id]->lte_phy_scope_enb, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);

      if (openair_daq_vars.use_ia_receiver == 1) {
          fl_set_button(form_ue[UE_id]->button_0,1);
          fl_set_object_label(form_ue[UE_id]->button_0, "IA Receiver ON");
          fl_set_object_color(form_ue[UE_id]->button_0, FL_GREEN, FL_GREEN);
      }

  }
#endif

#ifdef SMBV
  smbv_init_config(smbv_fname, smbv_nframes);
  smbv_write_config_from_frame_parms(smbv_fname, &PHY_vars_eNB_g[0]->lte_frame_parms);
#endif

  init_time();

  LOG_I(EMU,">>>>>>>>>>>>>>>>>>>>>>>>>>> OAIEMU initialization done <<<<<<<<<<<<<<<<<<<<<<<<<<\n\n");
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  LOG_I (EMU,"after init: Nid_cell %d\n", PHY_vars_eNB_g[0]->lte_frame_parms.Nid_cell);
  LOG_I(EMU,"after init: frame_type %d,tdd_config %d\n", 
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          PHY_vars_eNB_g[0]->lte_frame_parms.frame_type,
          PHY_vars_eNB_g[0]->lte_frame_parms.tdd_config);


  if (ue_connection_test == 1) {
    snr_direction = -snr_step;
    snr_dB=20;
    sinr_dB=-20;
  }

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  init_slot_isr();

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  t = clock();

  for (frame=0; frame<oai_emulation.info.n_frames; frame++) {
    /*
    // Handling the cooperation Flag
    if (cooperation_flag == 2)
      {
        if ((PHY_vars_eNB_g[0]->eNB_UE_stats[0].mode == PUSCH) && (PHY_vars_eNB_g[0]->eNB_UE_stats[1].mode == PUSCH))
          PHY_vars_eNB_g[0]->cooperation_flag = 2;
      }
    */
    if (ue_connection_test==1) {
      if ((frame%20) == 0) {
        snr_dB += snr_direction;
        sinr_dB -= snr_direction;
      }
      if (snr_dB == -20) {
        snr_direction=snr_step;
      }
      else if (snr_dB==20) {
        snr_direction=-snr_step;
      }
    }

    oai_emulation.info.frame = frame; 
    //oai_emulation.info.time_ms += 1;  
    oai_emulation.info.time_s += 0.1; // emu time in s, each frame lasts for 10 ms // JNote: TODO check the coherency of the time and frame (I corrected it to 10 (instead of 0.01)
    // if n_frames not set by the user or is greater than max num frame then set adjust the frame counter
    if ( (oai_emulation.info.n_frames_flag == 0) || (oai_emulation.info.n_frames >= 0xffff) ){ 
      frame %=(oai_emulation.info.n_frames-1);
    } 
    
    update_omg(); // frequency is defined in the omg_global params configurable by the user

    update_omg_ocm();

#ifdef OPENAIR2
    // check if pipe is still open
    if ((oai_emulation.info.omv_enabled == 1) ){
      omv_write(pfd[1], enb_node_list, ue_node_list, omv_data);
    }
#endif    
#ifdef DEBUG_OMG
    if ((((int) oai_emulation.info.time_s) % 100) == 0) {
      for (UE_id = oai_emulation.info.first_ue_local; UE_id < (oai_emulation.info.first_ue_local + oai_emulation.info.nb_ue_local); UE_id++) {
        get_node_position (UE, UE_id);
      }
    }
#endif 

    update_ocm();

    for (slot=0 ; slot<20 ; slot++) {

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      wait_for_slot_isr();

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      last_slot = (slot - 1)%20;
      if (last_slot <0)
        last_slot+=20;
      next_slot = (slot + 1)%20;
      
      oai_emulation.info.time_ms = frame * 10 + (slot>>1) ;
      
      direction = subframe_select(frame_parms,next_slot>>1);
633

634 635 636 637 638 639 640 641 642 643 644 645 646 647 648
#ifdef PROC      
      if(Channel_Flag==1)
        Channel_Func(s_re2,s_im2,r_re2,r_im2,r_re02,r_im02,r_re0_d,r_im0_d,r_re0_u,r_im0_u,eNB2UE,UE2eNB,enb_data,ue_data,abstraction_flag,frame_parms,slot);

      if(Channel_Flag==0)
#endif
      {
        if((next_slot %2) ==0)
          clear_eNB_transport_info(oai_emulation.info.nb_enb_local);

        for (eNB_id=oai_emulation.info.first_enb_local;
             (eNB_id<(oai_emulation.info.first_enb_local+oai_emulation.info.nb_enb_local)) && (oai_emulation.info.cli_start_enb[eNB_id]==1);
             eNB_id++) {
          //printf ("debug: Nid_cell %d\n", PHY_vars_eNB_g[eNB_id]->lte_frame_parms.Nid_cell);
          //printf ("debug: frame_type %d,tdd_config %d\n", PHY_vars_eNB_g[eNB_id]->lte_frame_parms.frame_type,PHY_vars_eNB_g[eNB_id]->lte_frame_parms.tdd_config);
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          LOG_D(EMU,"PHY procedures eNB %d for frame %d, slot %d (subframe TX %d, RX %d) TDD %d/%d Nid_cell %d\n",
                eNB_id, frame, slot, next_slot >> 1,last_slot>>1,
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                PHY_vars_eNB_g[eNB_id]->lte_frame_parms.frame_type,
                PHY_vars_eNB_g[eNB_id]->lte_frame_parms.tdd_config,PHY_vars_eNB_g[eNB_id]->lte_frame_parms.Nid_cell);

          //Appliation: traffic gen
          update_otg_eNB(eNB_id, oai_emulation.info.time_ms);

          //IP/OTG to PDCP and PDCP to IP operation
          pdcp_run(frame, 1, 0, eNB_id);//PHY_vars_eNB_g[eNB_id]->Mod_id
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	  // PHY_vars_eNB_g[eNB_id]->frame = frame;
661
          phy_procedures_eNB_lte (last_slot, next_slot, PHY_vars_eNB_g[eNB_id], abstraction_flag, no_relay);
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#ifdef PRINT_STATS
      	if(last_slot==9 && frame%10==0)
	  if(eNB_avg_thr)
	    fprintf(eNB_avg_thr,"%d %d\n",PHY_vars_eNB_g[eNB_id]->frame,(PHY_vars_eNB_g[eNB_id]->total_system_throughput)/((PHY_vars_eNB_g[eNB_id]->frame+1)*10));
667
	if (eNB_stats[eNB_id]) {
668
	  len = dump_eNB_stats(PHY_vars_eNB_g[eNB_id], stats_buffer, 0);
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	  rewind (eNB_stats[eNB_id]);
	  fwrite (stats_buffer, 1, len, eNB_stats[eNB_id]);
	  fflush(eNB_stats[eNB_id]);
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	}
#ifdef OPENAIR2
	if (eNB_l2_stats) {
	  len = dump_eNB_l2_stats (stats_buffer, 0);
	  rewind (eNB_l2_stats);
	  fwrite (stats_buffer, 1, len, eNB_l2_stats);
	  fflush(eNB_l2_stats);
	}
#endif 	
#endif
        }
        // Call ETHERNET emulation here
        //emu_transport (frame, last_slot, next_slot, direction, oai_emulation.info.frame_type, ethernet_flag);

        if ((next_slot % 2) == 0)
          clear_UE_transport_info (oai_emulation.info.nb_ue_local);

        for (UE_id = oai_emulation.info.first_ue_local;
             (UE_id < (oai_emulation.info.first_ue_local+oai_emulation.info.nb_ue_local)) && (oai_emulation.info.cli_start_ue[UE_id]==1);
691
             UE_id++){
692
          if (frame >= (UE_id * 20)) {    // activate UE only after 20*UE_id frames so that different UEs turn on separately
693
	    
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	    LOG_D(EMU,"PHY procedures UE %d for frame %d, slot %d (subframe TX %d, RX %d)\n",
		  UE_id, frame, slot, next_slot >> 1,last_slot>>1);
696 697 698 699 700 701 702 703 704 705 706

	    if (PHY_vars_UE_g[UE_id]->UE_mode[0] != NOT_SYNCHED) {
	      if (frame>0) {
		PHY_vars_UE_g[UE_id]->frame = frame;
		
		//Application
		update_otg_UE(UE_id, oai_emulation.info.time_ms);
		
		//Access layer
		pdcp_run(frame, 0, UE_id, 0);
		
707
		phy_procedures_UE_lte (last_slot, next_slot, PHY_vars_UE_g[UE_id], 0, abstraction_flag,normal_txrx, no_relay);
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		ue_data[UE_id]->tx_power_dBm = PHY_vars_UE_g[UE_id]->tx_power_dBm;
	      }
	    }
	    else {
	      if (abstraction_flag==1){
		LOG_E(EMU, "sync not supported in abstraction mode (UE%d,mode%d)\n", UE_id, PHY_vars_UE_g[UE_id]->UE_mode[0]);
		exit(-1);
	      }
	      if ((frame>0) && (last_slot == (LTE_SLOTS_PER_FRAME-2))) {
		initial_sync(PHY_vars_UE_g[UE_id],normal_txrx);
		
		/*
		  write_output("dlchan00.m","dlch00",&(PHY_vars_UE_g[0]->lte_ue_common_vars.dl_ch_estimates[0][0][0]),(6*(PHY_vars_UE_g[0]->lte_frame_parms.ofdm_symbol_size)),1,1);
		  if (PHY_vars_UE_g[0]->lte_frame_parms.nb_antennas_rx>1)
		  write_output("dlchan01.m","dlch01",&(PHY_vars_UE_g[0]->lte_ue_common_vars.dl_ch_estimates[0][1][0]),(6*(PHY_vars_UE_g[0]->lte_frame_parms.ofdm_symbol_size)),1,1);
		  write_output("dlchan10.m","dlch10",&(PHY_vars_UE_g[0]->lte_ue_common_vars.dl_ch_estimates[0][2][0]),(6*(PHY_vars_UE_g[0]->lte_frame_parms.ofdm_symbol_size)),1,1);
		  if (PHY_vars_UE_g[0]->lte_frame_parms.nb_antennas_rx>1)
		  write_output("dlchan11.m","dlch11",&(PHY_vars_UE_g[0]->lte_ue_common_vars.dl_ch_estimates[0][3][0]),(6*(PHY_vars_UE_g[0]->lte_frame_parms.ofdm_symbol_size)),1,1);
		  write_output("rxsig.m","rxs",PHY_vars_UE_g[0]->lte_ue_common_vars.rxdata[0],PHY_vars_UE_g[0]->lte_frame_parms.samples_per_tti*10,1,1);
		  write_output("rxsigF.m","rxsF",PHY_vars_UE_g[0]->lte_ue_common_vars.rxdataF[0],2*PHY_vars_UE_g[0]->lte_frame_parms.symbols_per_tti*PHY_vars_UE_g[0]->lte_frame_parms.ofdm_symbol_size,2,1);
		  write_output("pbch_rxF_ext0.m","pbch_ext0",PHY_vars_UE_g[0]->lte_ue_pbch_vars[0]->rxdataF_ext[0],6*12*4,1,1);
		  write_output("pbch_rxF_comp0.m","pbch_comp0",PHY_vars_UE_g[0]->lte_ue_pbch_vars[0]->rxdataF_comp[0],6*12*4,1,1);
		  write_output("pbch_rxF_llr.m","pbch_llr",PHY_vars_UE_g[0]->lte_ue_pbch_vars[0]->llr,(frame_parms->Ncp==0) ? 1920 : 1728,1,4);
		*/
	      }
	    }
734
#ifdef PRINT_STATS
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	    if(last_slot==2 && frame%10==0)
	      if (UE_stats_th[UE_id])
		fprintf(UE_stats_th[UE_id],"%d %d\n",frame, PHY_vars_UE_g[UE_id]->bitrate[0]/1000);
	    if (UE_stats[UE_id]) {
	      len = dump_ue_stats (PHY_vars_UE_g[UE_id], stats_buffer, 0, normal_txrx, 0);
	      rewind (UE_stats[UE_id]);
	      fwrite (stats_buffer, 1, len, UE_stats[UE_id]);
	      fflush(UE_stats[UE_id]);
	    }
#endif
	  }
	}
#ifdef Rel10
	for (RN_id=oai_emulation.info.first_rn_local;
             RN_id<oai_emulation.info.first_rn_local+oai_emulation.info.nb_rn_local;
	     RN_id++) {
	  // UE id and eNB id of the RN
	  UE_id= oai_emulation.info.first_ue_local+oai_emulation.info.nb_ue_local + RN_id; // NB_UE_INST + RN_id
	  eNB_id= oai_emulation.info.first_enb_local+oai_emulation.info.nb_enb_local + RN_id; // NB_eNB_INST + RN_id
	  // currently only works in FDD
755
	  if (oai_emulation.info.eMBMS_active_state == 4){
756 757
	    r_type = multicast_relay;
	    //LOG_I(EMU,"Activating the multicast relaying\n");
758
	  }else {
759
	    LOG_E(EMU,"Not supported eMBMS option when relaying is enabled %d\n", r_type);
760 761 762
	    exit(-1);
	  }
	  if ( oai_emulation.info.frame_type  == 0) {
763
	    // RN == UE
764 765
	    if (frame>0) {
	      if (PHY_vars_UE_g[UE_id]->UE_mode[0] != NOT_SYNCHED) {
766 767
		LOG_D(EMU,"[RN %d] PHY procedures UE %d for frame %d, slot %d (subframe TX %d, RX %d)\n",
		      RN_id, UE_id, frame, slot, next_slot >> 1,last_slot>>1);
768
		PHY_vars_UE_g[UE_id]->frame = frame;
769
		phy_procedures_UE_lte (last_slot, next_slot, PHY_vars_UE_g[UE_id], 0, abstraction_flag,normal_txrx, r_type);
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	      } else if (last_slot == (LTE_SLOTS_PER_FRAME-2)) {
		initial_sync(PHY_vars_UE_g[UE_id],normal_txrx);
	      }
	    }
	    
775 776 777 778
	    // RN == eNB
	    LOG_D(EMU,"[RN %d] PHY procedures eNB %d for frame %d, slot %d (subframe TX %d, RX %d)\n",
	    	  RN_id, eNB_id, frame, slot, next_slot >> 1,last_slot>>1);
	    phy_procedures_eNB_lte (last_slot, next_slot, PHY_vars_eNB_g[eNB_id], abstraction_flag, r_type);
779

780
	  }
781
	  else{
782
	    LOG_E(EMU,"TDD is not supported for multicast relaying %d\n", r_type);
783 784 785
	    exit(-1);
	  }
	}
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#endif
      emu_transport (frame, last_slot, next_slot,direction, oai_emulation.info.frame_type, ethernet_flag);
      if ((direction  == SF_DL)|| (frame_parms->frame_type==0)){
         // consider only sec id 0
	/*	for (eNB_id=0;eNB_id<NB_eNB_INST;eNB_id++) {
	  if (abstraction_flag == 0) {
	    do_OFDM_mod(PHY_vars_eNB_g[eNB_id]->lte_eNB_common_vars.txdataF[0],
			  PHY_vars_eNB_g[eNB_id]->lte_eNB_common_vars.txdata[0],
			  frame,next_slot,
			  frame_parms);
	  }
	  }*/
	for (UE_id=0;UE_id<NB_UE_INST;UE_id++) {
	  do_DL_sig(r_re0,r_im0,r_re,r_im,s_re,s_im,eNB2UE,enb_data,ue_data,next_slot,abstraction_flag,frame_parms,UE_id);
	}
      }
      if ((direction  == SF_UL)|| (frame_parms->frame_type==0)){//if ((subframe<2) || (subframe>4))
          do_UL_sig(r_re0,r_im0,r_re,r_im,s_re,s_im,UE2eNB,enb_data,ue_data,next_slot,abstraction_flag,frame_parms,frame);
	  /*   
	       int ccc;
	       fprintf(SINRpost,"SINRdb For eNB New Subframe : \n ");
	       for(ccc = 0 ; ccc<301; ccc++)
	       {
	       fprintf(SINRpost,"_ %f ", SINRpost_eff[ccc]);
	       }
                fprintf(SINRpost,"SINRdb For eNB : %f \n ", SINRpost_eff[ccc]);
	*/   
      }
      if ((direction == SF_S)) {//it must be a special subframe
        if (next_slot%2==0) {//DL part
	  /*  for (eNB_id=0;eNB_id<NB_eNB_INST;eNB_id++) {
	    if (abstraction_flag == 0) {
	      do_OFDM_mod(PHY_vars_eNB_g[eNB_id]->lte_eNB_common_vars.txdataF[0],
			  PHY_vars_eNB_g[eNB_id]->lte_eNB_common_vars.txdata[0],
			  frame,next_slot,
			  frame_parms);
	    }
	    }*/
	  for (UE_id=0;UE_id<NB_UE_INST;UE_id++) {
	    do_DL_sig(r_re0,r_im0,r_re,r_im,s_re,s_im,eNB2UE,enb_data,ue_data,next_slot,abstraction_flag,frame_parms,UE_id);
	  }
          /*
            for (aarx=0;aarx<UE2eNB[1][0]->nb_rx;aarx++)
            for (aatx=0;aatx<UE2eNB[1][0]->nb_tx;aatx++)
            for (k=0;k<UE2eNB[1][0]->channel_length;k++)
            printf("SB(%d,%d,%d)->(%f,%f)\n",k,aarx,aatx,UE2eNB[1][0]->ch[aarx+(aatx*UE2eNB[1][0]->nb_rx)][k].r,UE2eNB[1][0]->ch[aarx+(aatx*UE2eNB[1][0]->nb_rx)][k].i);
          */
        }
        else {// UL part
	  do_UL_sig(r_re0,r_im0,r_re,r_im,s_re,s_im,UE2eNB,enb_data,ue_data,next_slot,abstraction_flag,frame_parms,frame);
	          
	  /*        int ccc;
            fprintf(SINRpost,"SINRdb For eNB New Subframe : \n ");
            for(ccc = 0 ; ccc<301; ccc++)
            {
              fprintf(SINRpost,"_ %f ", SINRpost_eff[ccc]);
            }
            fprintf(SINRpost,"SINRdb For eNB : %f \n ", SINRpost_eff[ccc]);
          }
    */    }
	}
        if ((last_slot == 1) && (frame == 0)
          && (abstraction_flag == 0) && (oai_emulation.info.n_frames == 1)) {

          write_output ("dlchan0.m", "dlch0",
                        &(PHY_vars_UE_g[0]->lte_ue_common_vars.dl_ch_estimates[0][0][0]),
                        (6 * (PHY_vars_UE_g[0]->lte_frame_parms.ofdm_symbol_size)), 1, 1);
          write_output ("dlchan1.m", "dlch1",
                        &(PHY_vars_UE_g[0]->lte_ue_common_vars.dl_ch_estimates[1][0][0]),
                        (6 * (PHY_vars_UE_g[0]->lte_frame_parms.ofdm_symbol_size)), 1, 1);
          write_output ("dlchan2.m", "dlch2",
                        &(PHY_vars_UE_g[0]->lte_ue_common_vars.dl_ch_estimates[2][0][0]),
                        (6 * (PHY_vars_UE_g[0]->lte_frame_parms.ofdm_symbol_size)), 1, 1);
          write_output ("pbch_rxF_comp0.m", "pbch_comp0",
                        PHY_vars_UE_g[0]->lte_ue_pbch_vars[0]->rxdataF_comp[0], 6 * 12 * 4, 1, 1);
          write_output ("pbch_rxF_llr.m", "pbch_llr",
                        PHY_vars_UE_g[0]->lte_ue_pbch_vars[0]->llr, (frame_parms->Ncp == 0) ? 1920 : 1728, 1, 4);
        }
        /*
         if ((last_slot==1) && (frame==1)) {
         write_output("dlsch_rxF_comp0.m","dlsch0_rxF_comp0",PHY_vars_UE->lte_ue_pdsch_vars[eNB_id]->rxdataF_comp[0],300*(-(PHY_vars_UE->lte_frame_parms.Ncp*2)+14),1,1);
         write_output("pdcch_rxF_comp0.m","pdcch0_rxF_comp0",PHY_vars_UE->lte_ue_pdcch_vars[eNB_id]->rxdataF_comp[0],4*300,1,1);
         }
       */

        if (next_slot %2 == 0){
          clock_gettime (CLOCK_REALTIME, &time_spec);
          time_last = time_now;
          time_now = (unsigned long) time_spec.tv_nsec;
          td = (int) (time_now - time_last);
          if (td>0) {
            td_avg = (int)(((K*(long)td) + (((1<<3)-K)*((long)td_avg)))>>3); // in us
            LOG_T(EMU,"sleep frame %d, time_now %ldus,time_last %ldus,average time difference %ldns, CURRENT TIME DIFF %dus, avgerage difference from the target %dus\n",
                  frame, time_now,time_last,td_avg, td/1000,(td_avg-TARGET_SF_TIME_NS)/1000);
          }
          if (td_avg<(TARGET_SF_TIME_NS - SF_DEVIATION_OFFSET_NS)){
            sleep_time_us += SLEEP_STEP_US;
            LOG_D(EMU,"Faster than realtime increase the avg sleep time for %d us, frame %d\n",
                  sleep_time_us,frame);
            // LOG_D(EMU,"Faster than realtime increase the avg sleep time for %d us, frame %d, time_now %ldus,time_last %ldus,average time difference %ldns, CURRENT TIME DIFF %dus, avgerage difference from the target %dus\n",    sleep_time_us,frame, time_now,time_last,td_avg, td/1000,(td_avg-TARGET_SF_TIME_NS)/1000);
          }
          else if (td_avg > (TARGET_SF_TIME_NS + SF_DEVIATION_OFFSET_NS)) {
            sleep_time_us-= SLEEP_STEP_US;
            LOG_D(EMU,"Slower than realtime reduce the avg sleep time for %d us, frame %d, time_now\n",
                  sleep_time_us,frame);
            //LOG_T(EMU,"Slower than realtime reduce the avg sleep time for %d us, frame %d, time_now %ldus,time_last %ldus,average time difference %ldns, CURRENT TIME DIFF %dus, avgerage difference from the target %dus\n",     sleep_time_us,frame, time_now,time_last,td_avg, td/1000,(td_avg-TARGET_SF_TIME_NS)/1000);
          }
        } // end if next_slot%2
      }// if Channel_Flag==0

    }                          //end of slot
    
    if ((frame>=1)&&(frame<=9)&&(abstraction_flag==0)
#ifdef PROC
      &&(Channel_Flag==0)
#endif
      ){
      write_output("UEtxsig0.m","txs0", PHY_vars_UE_g[0]->lte_ue_common_vars.txdata[0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
      sprintf(fname,"eNBtxsig%d.m",frame);
      sprintf(vname,"txs%d",frame);
      write_output(fname,vname, PHY_vars_eNB_g[0]->lte_eNB_common_vars.txdata[0][0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
      write_output("eNBtxsigF0.m","txsF0",PHY_vars_eNB_g[0]->lte_eNB_common_vars.txdataF[0][0],PHY_vars_eNB_g[0]->lte_frame_parms.symbols_per_tti*PHY_vars_eNB_g[0]->lte_frame_parms.ofdm_symbol_size,1,1);

      write_output("UErxsig0.m","rxs0", PHY_vars_UE_g[0]->lte_ue_common_vars.rxdata[0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
      write_output("eNBrxsig0.m","rxs0", PHY_vars_eNB_g[0]->lte_eNB_common_vars.rxdata[0][0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
    } 

#ifdef XFORMS
    eNB_id = 0;
    for (UE_id = 0; UE_id < NB_UE_INST; UE_id++) {
      phy_scope_UE(form_ue[UE_id], 
		   PHY_vars_UE_g[UE_id],
		   eNB_id,
		   UE_id,
		   7);
      
      phy_scope_eNB(form_enb[UE_id], 
		    PHY_vars_eNB_g[eNB_id],
		    UE_id);
      
    }
#endif  

    // calibrate at the end of each frame if there is some time  left
    if((sleep_time_us > 0)&& (ethernet_flag ==0)){
      LOG_I(EMU,"[TIMING] Adjust average frame duration, sleep for %d us\n",sleep_time_us);
      usleep(sleep_time_us);
      sleep_time_us=0; // reset the timer, could be done per n SF 
    }
#ifdef SMBV
    if ((frame == config_frames[0]) || (frame == config_frames[1]) || (frame == config_frames[2]) || (frame == config_frames[3])) {
        smbv_frame_cnt++;        
    }
#endif
  }     //end of frame

  t = clock() - t;
  printf ("rrc Duration of the simulation: %f seconds\n",((float)t)/CLOCKS_PER_SEC);

  //  fclose(SINRpost);
  LOG_I(EMU,">>>>>>>>>>>>>>>>>>>>>>>>>>> OAIEMU Ending <<<<<<<<<<<<<<<<<<<<<<<<<<\n\n");

  free(otg_pdcp_buffer);

#ifdef SMBV
  if (config_smbv) {
      smbv_send_config (smbv_fname,smbv_ip);
  }
#endif

  //Perform KPI measurements
  if (oai_emulation.info.otg_enabled==1)
    kpi_gen();

  // relase all rx state
  if (ethernet_flag == 1) {
    emu_transport_release ();
  }

#ifdef PROC
  if (abstraction_flag == 0 && Channel_Flag==0 && Process_Flag==0) 
#else
    if (abstraction_flag == 0)
#endif
    {
    /*
       #ifdef IFFT_FPGA
       free(txdataF2[0]);
       free(txdataF2[1]);
       free(txdataF2);
       free(txdata[0]);
       free(txdata[1]);
       free(txdata);
       #endif
     */

    for (i = 0; i < 2; i++) {
      free (s_re[i]);
      free (s_im[i]);
      free (r_re[i]);
      free (r_im[i]);
    }
    free (s_re);
    free (s_im);
    free (r_re);
    free (r_im);

    lte_sync_time_free ();
  }
  //  pthread_join(sigth, NULL);

  // added for PHY abstraction
  if (oai_emulation.info.ocm_enabled == 1) {
    for (eNB_id = 0; eNB_id < NUMBER_OF_eNB_MAX; eNB_id++) 
      free(enb_data[eNB_id]); 
    
    for (UE_id = 0; UE_id < NUMBER_OF_UE_MAX; UE_id++)
      free(ue_data[UE_id]); 
  } //End of PHY abstraction changes

#ifdef OPENAIR2
  mac_top_cleanup();
#endif 
  
#ifdef PRINT_STATS
1011
  for (UE_id=0;UE_id<NB_UE_INST;UE_id++) {
1012 1013 1014 1015 1016
    if (UE_stats[UE_id]) 
      fclose (UE_stats[UE_id]);
    if(UE_stats_th[UE_id])
      fclose (UE_stats_th[UE_id]);
  }
1017 1018 1019 1020
  for (eNB_id=0;eNB_id<NB_eNB_INST;eNB_id++) {
    if (eNB_stats[eNB_id])
      fclose (eNB_stats[eNB_id]);
  }
1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086
  if (eNB_avg_thr)
    fclose (eNB_avg_thr);
  if (eNB_l2_stats)
    fclose (eNB_l2_stats);
  
#endif

  // stop OMG
  stop_mobility_generator(oai_emulation.info.omg_model_ue);//omg_param_list.mobility_type
#ifdef OPENAIR2
  if (oai_emulation.info.omv_enabled == 1)
    omv_end(pfd[1],omv_data);
#endif
  if ((oai_emulation.info.ocm_enabled == 1) && (ethernet_flag == 0) && (ShaF != NULL)) 
    destroyMat(ShaF,map1, map2);

  if ((oai_emulation.info.opt_enabled == 1) )
    terminate_opt();
  
  if (oai_emulation.info.cli_enabled)
    cli_server_cleanup();

  //bring oai if down
  terminate();
  log_thread_finalize();
  logClean();
  vcd_signal_dumper_close();
  
  return(0);
}

/*
static void *sigh(void *arg) {

  int signum;
  sigset_t sigcatch;
  sigemptyset(&sigcatch);
  sigaddset(&sigcatch, SIGHUP);
  sigaddset(&sigcatch, SIGINT);
  sigaddset(&sigcatch, SIGTERM);
  
  for (;;) {
    sigwait(&sigcatch, &signum);
    switch (signum) {
    case SIGHUP:
    case SIGINT:
    case SIGTERM:
      terminate();
    default:
      break;
    }
  }
  pthread_exit(NULL);
}
*/

void terminate(void) {
  int i;
  char interfaceName[8];
  for (i=0; i < NUMBER_OF_eNB_MAX+NUMBER_OF_UE_MAX; i++)
    if (oai_emulation.info.oai_ifup[i]==1){
    sprintf(interfaceName, "oai%d", i);
    bringInterfaceUp(interfaceName,0);
  }
}