oaisim.c 65.4 KB
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/*******************************************************************************
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 OpenAirInterface
 Copyright(c) 1999 - 2014 Eurecom
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 OpenAirInterface is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
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 OpenAirInterface is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
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 You should have received a copy of the GNU General Public License
 along with OpenAirInterface.The full GNU General Public License is
 included in this distribution in the file called "COPYING". If not,
 see <http://www.gnu.org/licenses/>.
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 Contact Information
 OpenAirInterface Admin: openair_admin@eurecom.fr
 OpenAirInterface Tech : openair_tech@eurecom.fr
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 OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr
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 Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE

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*******************************************************************************/
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/*! \file oaisim.c
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 * \brief oaisim top level
 * \author Navid Nikaein 
 * \date 2013-2015
 * \version 1.0
 * \company Eurecom
 * \email: openair_tech@eurecom.fr
 * \note
 * \warning
 */
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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>

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

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#include "SIMULATION/ETH_TRANSPORT/proto.h"

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//#ifdef OPENAIR2
#include "LAYER2/MAC/defs.h"
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#include "LAYER2/MAC/proto.h"
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#include "LAYER2/MAC/vars.h"
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#include "pdcp.h"
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#include "RRC/LITE/vars.h"
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#include "RRC/NAS/nas_config.h"
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#include "SCHED/defs.h"
#include "SCHED/vars.h"

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#include "PHY/TOOLS/lte_phy_scope.h"
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#ifdef SMBV
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// Rohde&Schwarz SMBV100A vector signal generator
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#include "PHY/TOOLS/smbv.h"
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char smbv_fname[] = "smbv_config_file.smbv";
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unsigned short smbv_nframes = 4; // how many frames to configure 1,..,4
unsigned short config_frames[4] = {2,9,11,13};
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unsigned char smbv_frame_cnt = 0;
uint8_t config_smbv = 0;
char smbv_ip[16];
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#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"
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#include "enb_app.h"
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#include "../PROC/interface.h"
#include "../PROC/channel_sim_proc.h"
#include "../PROC/Tsync.h"
#include "../PROC/Process.h"

#include "UTIL/LOG/vcd_signal_dumper.h"
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#include "UTIL/OTG/otg_kpi.h"
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#include "assertions.h"
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#if defined(ENABLE_ITTI)
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# include "intertask_interface.h"
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# include "create_tasks.h"
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#endif
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#include "T.h"

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/*
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  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;
*/
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#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
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#define DECOR_DIST             100
#define SF_VAR                 10
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//constant for OAISIM soft realtime calibration
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//#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 */
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frame_t frame = 0;
char stats_buffer[16384];
channel_desc_t *eNB2UE[NUMBER_OF_eNB_MAX][NUMBER_OF_UE_MAX][MAX_NUM_CCs];
channel_desc_t *UE2eNB[NUMBER_OF_UE_MAX][NUMBER_OF_eNB_MAX][MAX_NUM_CCs];
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//Added for PHY abstraction
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node_desc_t *enb_data[NUMBER_OF_eNB_MAX];
node_desc_t *ue_data[NUMBER_OF_UE_MAX];
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pthread_cond_t sync_cond;
pthread_mutex_t sync_mutex;
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int sync_var=-1;
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pthread_mutex_t subframe_mutex;
int subframe_eNB_mask=0,subframe_UE_mask=0;
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openair0_config_t openair0_cfg[MAX_CARDS];
uint32_t          downlink_frequency[MAX_NUM_CCs][4];
int32_t           uplink_frequency_offset[MAX_NUM_CCs][4];
openair0_rf_map rf_map[MAX_NUM_CCs];

#if defined(ENABLE_ITTI)
volatile int             start_eNB = 0;
volatile int             start_UE = 0;
#endif
volatile int                    oai_exit = 0;


//int32_t **rxdata;
//int32_t **txdata;


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// Added for PHY abstraction
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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;
extern double snr_step;
extern uint8_t set_sinr;
extern uint8_t ue_connection_test;
extern uint8_t set_seed;
extern uint8_t target_dl_mcs;
extern uint8_t target_ul_mcs;
extern uint8_t abstraction_flag;
extern uint8_t ethernet_flag;
extern uint16_t Nid_cell;
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extern LTE_DL_FRAME_PARMS *frame_parms[MAX_NUM_CCs];
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//#ifdef XFORMS
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int otg_enabled;
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int xforms=0;
//#endif
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time_stats_t oaisim_stats;
time_stats_t oaisim_stats_f;
time_stats_t dl_chan_stats;
time_stats_t ul_chan_stats;

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// this should reflect the channel models in openair1/SIMULATION/TOOLS/defs.h
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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   },
  { "MBSFN", MBSFN },   { "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 }
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};
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#if !defined(ENABLE_ITTI)
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static void *
sigh (void *arg);
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#endif
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void
oai_shutdown (void);

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void reset_opp_meas_oaisim (void);

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void
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help (void)
{
  printf ("Usage: oaisim -h -a -F -C tdd_config -K [log_file] -V [vcd_file] -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 ("-H Enable handover operation (default disabled) \n");
  printf ("-I Enable CLI interface (to connect use telnet localhost 1352)\n");
  printf ("-k Set the Ricean factor (linear)\n");
  printf ("-K [log_file] Enable ITTI logging into log_file\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 for eNB scheduler\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 [enb_conf_file] eNB configuration file name\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");
  printf ("-q Enable Openair performance profiler \n");
  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");
  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 Gives a fixed UL mcs for eNB scheduler\n");
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  printf ("-T activate the traffic generator. Valide options are m2m,scbr,mcbr,bcbr,auto_pilot,bicycle_race,open_arena,team_fortress,m2m_traffic,auto_pilot_l,auto_pilot_m,auto_pilot_h,auto_pilot_e,virtual_game_l,virtual_game_m,virtual_game_h,virtual_game_f,alarm_humidity,alarm_smoke,alarm_temperature,openarena_dl,openarena_ul,voip_g711,voip_g729,video_vbr_10mbps,video_vbr_4mbps,video_vbr_2mbp,video_vbr_768kbps,video_vbr_384kbps,video_vbr_192kpbs,background_users\n");
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  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 [vcd_file] Enable VCD dump into vcd_file\n");
  printf ("-w number of CBA groups, if not specified or zero, CBA is inactive\n");
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#ifdef SMBV
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  printf ("-W IP address to connect to Rohde&Schwarz SMBV100A and configure SMBV from config file. -W0 uses default IP 192.168.12.201\n");
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#else
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  printf ("-W [Rohde&Schwarz SMBV100A functions disabled. Recompile with SMBV=1]\n");
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#endif
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  printf ("-x deprecated. Set the transmission mode in config file!\n");
  printf ("-y Set the number of receive antennas at the UE (1 or 2)\n");
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  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");
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  printf ("--xforms Activate the grapical scope\n");

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#if T_TRACER
  printf ("--T_port [port]    use given port\n");
  printf ("--T_nowait         don't wait for tracer, start immediately\n");
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  printf ("--T_dont_fork      to ease debugging with gdb\n");
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#endif
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}

pthread_t log_thread;

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

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  log_shutdown = 0;
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  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;
  }
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#endif

}

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

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

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#if defined(ENABLE_ITTI)
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static void set_cli_start(module_id_t module_idP, uint8_t start)
{
  if (module_idP < NB_eNB_INST) {
    oai_emulation.info.cli_start_enb[module_idP] = start;
  } else {
    oai_emulation.info.cli_start_ue[module_idP - NB_eNB_INST] = start;
  }
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}
#endif

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#ifdef OPENAIR2
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int omv_write(int pfd, node_list* enb_node_list, node_list* ue_node_list, Data_Flow_Unit omv_data)
{
  module_id_t 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(
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		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);
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        }
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      }
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    }
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  }

  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;

      if ((sizeof(omv_data.geo[0].RSSI) / sizeof(omv_data.geo[0].RSSI[0])) > 2) {
        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(
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		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);
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        }
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      }
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    }
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  }

  LOG_E(OMG, "pfd %d \n", pfd);

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

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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)
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    perror ("write omv failed");
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}
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#endif
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#ifdef OPENAIR2
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int pfd[2]; // fd for omv : fixme: this could be a local var
#endif
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#ifdef OPENAIR2
static Data_Flow_Unit omv_data;
#endif //ALU
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static module_id_t UE_inst = 0;
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static module_id_t eNB_inst = 0;
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Packet_OTG_List_t *otg_pdcp_buffer;
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typedef enum l2l1_task_state_e {
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  L2L1_WAITTING, L2L1_RUNNING, L2L1_TERMINATED,
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} l2l1_task_state_t;
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l2l1_task_state_t l2l1_state = L2L1_WAITTING;
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extern openair0_timestamp current_eNB_rx_timestamp[NUMBER_OF_eNB_MAX][MAX_NUM_CCs];
extern openair0_timestamp current_UE_rx_timestamp[NUMBER_OF_UE_MAX][MAX_NUM_CCs];


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/*------------------------------------------------------------------------------*/
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void *
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l2l1_task (void *args_p)
{
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  int CC_id;
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  // Framing variables
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  int32_t sf;
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  char fname[64], vname[64];
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  //#ifdef XFORMS
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  // 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
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  FD_lte_phy_scope_ue *form_ue[MAX_NUM_CCs][NUMBER_OF_UE_MAX];
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  FD_lte_phy_scope_enb *form_enb[NUMBER_OF_UE_MAX];
  char title[255];
  char xname[32] = "oaisim";
  int xargc = 1;
  char *xargv[1];
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  //#endif
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#undef PRINT_STATS /* this undef is to avoid gcc warnings */
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#define PRINT_STATS
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#ifdef PRINT_STATS
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  int len;
  FILE *UE_stats[NUMBER_OF_UE_MAX];
  FILE *UE_stats_th[NUMBER_OF_UE_MAX];
  FILE *eNB_stats[NUMBER_OF_eNB_MAX];
  FILE *eNB_avg_thr;
  FILE *eNB_l2_stats;
  char UE_stats_filename[255];
  char eNB_stats_filename[255];
  char UE_stats_th_filename[255];
  char eNB_stats_th_filename[255];
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#endif


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  if (xforms==1) {
    xargv[0] = xname;
    fl_initialize (&xargc, xargv, NULL, 0, 0);
    eNB_inst = 0;
    
    for (UE_inst = 0; UE_inst < NB_UE_INST; UE_inst++) {
      for (CC_id=0;CC_id<MAX_NUM_CCs;CC_id++) {
	// DL scope at UEs
	form_ue[CC_id][UE_inst] = create_lte_phy_scope_ue();
	sprintf (title, "LTE DL SCOPE eNB %d to UE %d CC_id %d", eNB_inst, UE_inst, CC_id);
	fl_show_form (form_ue[CC_id][UE_inst]->lte_phy_scope_ue, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);

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	if (PHY_vars_UE_g[UE_inst][CC_id]->use_ia_receiver == 1) {
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	  fl_set_button(form_ue[CC_id][UE_inst]->button_0,1);
	  fl_set_object_label(form_ue[CC_id][UE_inst]->button_0, "IA Receiver ON");
	  fl_set_object_color(form_ue[CC_id][UE_inst]->button_0, FL_GREEN, FL_GREEN);
	}
	
      }
      // UL scope at eNB 0
      form_enb[UE_inst] = create_lte_phy_scope_enb();
      sprintf (title, "LTE UL SCOPE UE %d to eNB %d", UE_inst, eNB_inst);
      fl_show_form (form_enb[UE_inst]->lte_phy_scope_enb, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);
      
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    }
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  }
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#ifdef PRINT_STATS
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  for (UE_inst=0; UE_inst<NB_UE_INST; UE_inst++) {
    sprintf(UE_stats_filename,"UE_stats%d.txt",UE_inst);
    UE_stats[UE_inst] = fopen (UE_stats_filename, "w");
  }

  for (eNB_inst=0; eNB_inst<NB_eNB_INST; eNB_inst++) {
    sprintf(eNB_stats_filename,"eNB_stats%d.txt",eNB_inst);
    eNB_stats[eNB_inst] = fopen (eNB_stats_filename, "w");
  }

  if(abstraction_flag==0) {
    for (UE_inst=0; UE_inst<NB_UE_INST; UE_inst++) {
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      /* TODO: transmission_mode is defined per CC, we set 0 for now */
      sprintf(UE_stats_th_filename,"UE_stats_th%d_tx%d.txt",UE_inst,oai_emulation.info.transmission_mode[0]);
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      UE_stats_th[UE_inst] = fopen (UE_stats_th_filename, "w");
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    }
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    /* TODO: transmission_mode is defined per CC, we set 0 for now */
    sprintf(eNB_stats_th_filename,"eNB_stats_th_tx%d.txt",oai_emulation.info.transmission_mode[0]);
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    eNB_avg_thr = fopen (eNB_stats_th_filename, "w");
  } else {
    for (UE_inst=0; UE_inst<NB_UE_INST; UE_inst++) {
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      /* TODO: transmission_mode is defined per CC, we set 0 for now */
      sprintf(UE_stats_th_filename,"UE_stats_abs_th%d_tx%d.txt",UE_inst,oai_emulation.info.transmission_mode[0]);
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      UE_stats_th[UE_inst] = fopen (UE_stats_th_filename, "w");
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    }
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    /* TODO: transmission_mode is defined per CC, we set 0 for now */
    sprintf(eNB_stats_th_filename,"eNB_stats_abs_th_tx%d.txt",oai_emulation.info.transmission_mode[0]);
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    eNB_avg_thr = fopen (eNB_stats_th_filename, "w");
  }

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#ifdef OPENAIR2
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  eNB_l2_stats = fopen ("eNB_l2_stats.txt", "w");
  LOG_I(EMU,"eNB_l2_stats=%p\n", eNB_l2_stats);
#endif
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#endif

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#if defined(ENABLE_ITTI)
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  MessageDef *message_p = NULL;
  const char *msg_name = NULL;
  int result;

  itti_mark_task_ready (TASK_L2L1);
  LOG_I(EMU, "TASK_L2L1 is READY\n");

  if (oai_emulation.info.nb_enb_local > 0) {
    /* Wait for the initialize message */
    do {
      if (message_p != NULL) {
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        result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
        AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
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      }

      itti_receive_msg (TASK_L2L1, &message_p);
      msg_name = ITTI_MSG_NAME (message_p);
      LOG_I(EMU, "TASK_L2L1 received %s in state L2L1_WAITTING\n", msg_name);

      switch (ITTI_MSG_ID(message_p)) {
      case INITIALIZE_MESSAGE:
        l2l1_state = L2L1_RUNNING;
        break;

      case ACTIVATE_MESSAGE:
        set_cli_start(ITTI_MSG_INSTANCE (message_p), 1);
        break;

      case DEACTIVATE_MESSAGE:
        set_cli_start(ITTI_MSG_INSTANCE (message_p), 0);
        break;

      case TERMINATE_MESSAGE:
        l2l1_state = L2L1_TERMINATED;
        break;

      default:
        LOG_E(EMU, "Received unexpected message %s\n", ITTI_MSG_NAME(message_p));
        break;
      }
    } while (l2l1_state == L2L1_WAITTING);

    result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
    AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
  }

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#endif
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  module_id_t enb_id;
  module_id_t UE_id;
  for (enb_id = 0; enb_id < NB_eNB_INST; enb_id++)
    mac_xface->mrbch_phy_sync_failure (enb_id, 0, enb_id);
  
  if (abstraction_flag == 1) {
    for (UE_id = 0; UE_id < NB_UE_INST; UE_id++)
      mac_xface->dl_phy_sync_success (UE_id, 0, 0,1);   //UE_id%NB_eNB_INST);
  }
  
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  start_meas (&oaisim_stats);

  for (frame = 0;
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       (l2l1_state != L2L1_TERMINATED) && 
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	 ((oai_emulation.info.n_frames_flag == 0) ||
	  (frame < oai_emulation.info.n_frames));
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       frame++) {
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#if defined(ENABLE_ITTI)

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    do {
      // Checks if a message has been sent to L2L1 task
      itti_poll_msg (TASK_L2L1, &message_p);
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      if (message_p != NULL) {
        msg_name = ITTI_MSG_NAME (message_p);
        LOG_I(EMU, "TASK_L2L1 received %s\n", msg_name);
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        switch (ITTI_MSG_ID(message_p)) {
        case ACTIVATE_MESSAGE:
          set_cli_start(ITTI_MSG_INSTANCE (message_p), 1);
          break;

        case DEACTIVATE_MESSAGE:
          set_cli_start(ITTI_MSG_INSTANCE (message_p), 0);
          break;

        case TERMINATE_MESSAGE:
          l2l1_state = L2L1_TERMINATED;
          break;
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        case MESSAGE_TEST:
          break;

        default:
          LOG_E(EMU, "Received unexpected message %s\n", ITTI_MSG_NAME(message_p));
          break;
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        }

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

#endif

    //Run the aperiodic user-defined events
    if (oai_emulation.info.oeh_enabled == 1)
      execute_events (frame);

    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 += 0.01; // 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)
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     update_omg (frame); // frequency is defined in the omg_global params configurable by the user
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    update_omg_ocm ();
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#ifdef OPENAIR2
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    // 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);
    }

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#endif

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    update_ocm ();
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    for (sf = 0; sf < 10; sf++) {
      start_meas (&oaisim_stats_f);
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      wait_for_slot_isr ();
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#if defined(ENABLE_ITTI)
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      itti_update_lte_time(frame % MAX_FRAME_NUMBER, sf<<1);
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#endif
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      oai_emulation.info.time_ms = frame * 10 + sf;
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#ifdef PROC
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    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,sf<<1);
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    if(Channel_Flag==0)
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#endif
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      { // SUBFRAME INNER PART
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#if defined(ENABLE_ITTI)
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        log_set_instance_type (LOG_INSTANCE_ENB);
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#endif

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	clear_eNB_transport_info (oai_emulation.info.nb_enb_local);
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        CC_id=0;
        int all_done=0;
        while (all_done==0) {
          pthread_mutex_lock(&subframe_mutex);
          int subframe_eNB_mask_local = subframe_eNB_mask;
          int subframe_UE_mask_local  = subframe_UE_mask;
          pthread_mutex_unlock(&subframe_mutex);
          LOG_D(EMU,"Frame %d, Subframe %d: Checking masks %x,%x\n",frame,sf,subframe_eNB_mask,subframe_UE_mask);
          if ((subframe_eNB_mask_local == ((1<<NB_eNB_INST)-1)) &&
              (subframe_UE_mask_local == ((1<<NB_UE_INST)-1)))
             all_done=1;
          else
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	    usleep(500);
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        }

        //clear subframe masks for next round
        pthread_mutex_lock(&subframe_mutex);
        subframe_eNB_mask=0;
        subframe_UE_mask=0;
        pthread_mutex_unlock(&subframe_mutex);

        // increment timestamps
        for (eNB_inst = oai_emulation.info.first_enb_local;
             (eNB_inst
              < (oai_emulation.info.first_enb_local
                 + oai_emulation.info.nb_enb_local));
             eNB_inst++) {
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	  current_eNB_rx_timestamp[eNB_inst][CC_id] += PHY_vars_eNB_g[eNB_inst][CC_id]->frame_parms.samples_per_tti;
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        }
        for (UE_inst = 0; UE_inst<NB_UE_INST;UE_inst++) {
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	  current_UE_rx_timestamp[UE_inst][CC_id] += PHY_vars_UE_g[UE_inst][CC_id]->frame_parms.samples_per_tti;
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        }


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	if (oai_emulation.info.cli_start_enb[eNB_inst] != 0) {
	  T(T_ENB_MASTER_TICK, T_INT(eNB_inst), T_INT(frame % 1024), T_INT(slot/2));
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	  /*
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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_inst,
		frame%MAX_FRAME_NUMBER,
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		2*sf,
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		PHY_vars_eNB_g[eNB_inst][0]->proc[slot >> 1].subframe_tx,
		PHY_vars_eNB_g[eNB_inst][0]->proc[slot >> 1].subframe_rx,
		PHY_vars_eNB_g[eNB_inst][0]->lte_frame_parms.frame_type,
		PHY_vars_eNB_g[eNB_inst][0]->lte_frame_parms.tdd_config,
		PHY_vars_eNB_g[eNB_inst][0]->lte_frame_parms.Nid_cell);
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	  */
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	}
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        for (eNB_inst = oai_emulation.info.first_enb_local;
             (eNB_inst
              < (oai_emulation.info.first_enb_local
                 + oai_emulation.info.nb_enb_local));
             eNB_inst++) {
          if (oai_emulation.info.cli_start_enb[eNB_inst] != 0) {
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	    T(T_ENB_MASTER_TICK, T_INT(eNB_inst), T_INT(frame % 1024), T_INT(sf));
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	    /*
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	    LOG_D(EMU,
		  "PHY procedures eNB %d for frame %d, subframe %d TDD %d/%d Nid_cell %d\n",
		  eNB_inst,
		  frame % MAX_FRAME_NUMBER,
		  sf,
		  PHY_vars_eNB_g[eNB_inst][0]->frame_parms.frame_type,
		  PHY_vars_eNB_g[eNB_inst][0]->frame_parms.tdd_config,
		  PHY_vars_eNB_g[eNB_inst][0]->frame_parms.Nid_cell);
            
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	    */
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#ifdef OPENAIR2
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	    //Application: traffic gen
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            update_otg_eNB (eNB_inst, oai_emulation.info.time_ms);
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            //IP/OTG to PDCP and PDCP to IP operation
            //        pdcp_run (frame, 1, 0, eNB_inst); //PHY_vars_eNB_g[eNB_id]->Mod_id
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#endif
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#ifdef PRINT_STATS
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            if((sf==9) && frame%10==0)
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              if(eNB_avg_thr)
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                fprintf(eNB_avg_thr,"%d %d\n",PHY_vars_eNB_g[eNB_inst][0]->proc.proc_rxtx[sf&1].frame_tx,
                        (PHY_vars_eNB_g[eNB_inst][0]->total_system_throughput)/((PHY_vars_eNB_g[eNB_inst][0]->proc.proc_rxtx[sf&1].frame_tx+1)*10));
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            if (eNB_stats[eNB_inst]) {
              len = dump_eNB_stats(PHY_vars_eNB_g[eNB_inst][0], stats_buffer, 0);
              rewind (eNB_stats[eNB_inst]);
              fwrite (stats_buffer, 1, len, eNB_stats[eNB_inst]);
              fflush(eNB_stats[eNB_inst]);
            }

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            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);
            }

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#endif
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#endif
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          }
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        }// eNB_inst loop
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        // Call ETHERNET emulation here
        //emu_transport (frame, last_slot, next_slot, direction, oai_emulation.info.frame_type, ethernet_flag);
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#if defined(ENABLE_ITTI)
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        log_set_instance_type (LOG_INSTANCE_UE);
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#endif

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	/*
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	clear_UE_transport_info (oai_emulation.info.nb_ue_local);
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          clear_UE_transport_info (oai_emulation.info.nb_ue_local);

        for (UE_inst = oai_emulation.info.first_ue_local;
             (UE_inst < (oai_emulation.info.first_ue_local + oai_emulation.info.nb_ue_local));
             UE_inst++) {
          if (oai_emulation.info.cli_start_ue[UE_inst] != 0) {
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#if defined(ENABLE_ITTI) && defined(ENABLE_USE_MME)
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#else
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            if (frame >= (UE_inst * 20)) // activate UE only after 20*UE_id frames so that different UEs turn on separately
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#endif
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            {
              LOG_D(EMU,
                    "PHY procedures UE %d for frame %d, slot %d (subframe TX %d, RX %d)\n",
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                    UE_inst, frame % MAX_FRAME_NUMBER, slot, next_slot >> 1,
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                    last_slot >> 1);

              if (PHY_vars_UE_g[UE_inst][0]->UE_mode[0]
                  != NOT_SYNCHED) {
                if (frame > 0) {
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                  PHY_vars_UE_g[UE_inst][0]->frame_rx = frame % MAX_FRAME_NUMBER;
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                  PHY_vars_UE_g[UE_inst][0]->slot_rx =  last_slot;
                  PHY_vars_UE_g[UE_inst][0]->slot_tx = next_slot;
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                  if (next_slot > 1)
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                    PHY_vars_UE_g[UE_inst][0]->frame_tx = frame % MAX_FRAME_NUMBER;
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                  else
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                    PHY_vars_UE_g[UE_inst][0]->frame_tx = (frame + 1) % MAX_FRAME_NUMBER;
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#ifdef OPENAIR2
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                  //Application
                  update_otg_UE (UE_inst, oai_emulation.info.time_ms);

                  //Access layer
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		  PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, UE_inst, 0, ENB_FLAG_NO, NOT_A_RNTI, frame % MAX_FRAME_NUMBER, next_slot);
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                  pdcp_run (&ctxt);
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#endif
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                  for (CC_id = 0; CC_id < MAX_NUM_CCs;
                       CC_id++) {
                    phy_procedures_UE_lte (
                      PHY_vars_UE_g[UE_inst][CC_id],
                      0, abstraction_flag,
                      normal_txrx, no_relay,
                      NULL);
                  }

                  ue_data[UE_inst]->tx_power_dBm =
                    PHY_vars_UE_g[UE_inst][0]->tx_power_dBm;
                }
              } else {
                if (abstraction_flag == 1) {
                  LOG_E(EMU,
                        "sync not supported in abstraction mode (UE%d,mode%d)\n",
                        UE_inst,
                        PHY_vars_UE_g[UE_inst][0]->UE_mode[0]);
                  exit (-1);
                }

                if ((frame > 0)
                    && (last_slot
                        == (LTE_SLOTS_PER_FRAME
                            - 2))) {
                  initial_sync (PHY_vars_UE_g[UE_inst][0],
                                normal_txrx);

                }
              }

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#ifdef PRINT_STATS
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              if(last_slot==2 && frame%10==0) {
                if (UE_stats_th[UE_inst]) {
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                  fprintf(UE_stats_th[UE_inst],"%d %d\n",frame%MAX_FRAME_NUMBER, PHY_vars_UE_g[UE_inst][0]->bitrate[0]/1000);
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                }
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              }

              if (UE_stats[UE_inst]) {
                len = dump_ue_stats (PHY_vars_UE_g[UE_inst][0], stats_buffer, 0, normal_txrx, 0);
                rewind (UE_stats[UE_inst]);
                fwrite (stats_buffer, 1, len, UE_stats[UE_inst]);
                fflush(UE_stats[UE_inst]);
              }

#endif
            }
          }
        }
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#ifdef Rel10
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        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_inst= oai_emulation.info.first_ue_local+oai_emulation.info.nb_ue_local + RN_id;// NB_UE_INST + RN_id
          eNB_inst= oai_emulation.info.first_enb_local+oai_emulation.info.nb_enb_local + RN_id;// NB_eNB_INST + RN_id

          // currently only works in FDD
          if (oai_emulation.info.eMBMS_active_state == 4) {
            r_type = multicast_relay;
            //LOG_I(EMU,"Activating the multicast relaying\n");
          } else {
            LOG_E(EMU,"Not supported eMBMS option when relaying is enabled %d\n", r_type);
            exit(-1);
          }

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          PHY_vars_RN_g[RN_id]->frame = frame % MAX_FRAME_NUMBER;
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          if ( oai_emulation.info.frame_type == 0) {
            // RN == UE
            if (frame>0) {
              if (PHY_vars_UE_g[UE_inst][0]->UE_mode[0] != NOT_SYNCHED) {
                LOG_D(EMU,"[RN %d] PHY procedures UE %d for frame %d, slot %d (subframe TX %d, RX %d)\n",
                      RN_id, UE_inst, frame, slot, next_slot >> 1,last_slot>>1);
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                PHY_vars_UE_g[UE_inst][0]->frame_rx = frame % MAX_FRAME_NUMBER;
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                PHY_vars_UE_g[UE_inst][0]->slot_rx = last_slot;
                PHY_vars_UE_g[UE_inst][0]->slot_tx = next_slot;

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                if (next_slot>1) PHY_vars_UE_g[UE_inst][0]->frame_tx = frame % MAX_FRAME_NUMBER;
                else PHY_vars_UE_g[UE_inst][0]->frame_tx = (frame+1) % MAX_FRAME_NUMBER;
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                phy_procedures_UE_lte (PHY_vars_UE_g[UE_inst][0], 0, abstraction_flag,normal_txrx,
                                       r_type, PHY_vars_RN_g[RN_id]);
              } else if (last_slot == (LTE_SLOTS_PER_FRAME-2)) {
                initial_sync(PHY_vars_UE_g[UE_inst][0],normal_txrx);
              }
            }

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        emu_transport (frame % MAX_FRAME_NUMBER, sf<<1, ((sf+4)%10)<<1, subframe_select(&PHY_vars_eNB_g[0][0]->frame_parms,sf),
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                       oai_emulation.info.frame_type[0], ethernet_flag);

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	start_meas (&dl_chan_stats);
	
	for (UE_inst = 0; UE_inst < NB_UE_INST; UE_inst++)
	  for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
	    //#warning figure out what to do with UE frame_parms during initial_sync
	    do_DL_sig (r_re0,
		       r_im0,
		       r_re,
		       r_im,
		       s_re,
		       s_im,
		       eNB2UE,
		       enb_data,
		       ue_data,
		       PHY_vars_eNB_g[0][CC_id]->proc.proc_rxtx[sf&1].subframe_tx<<1,
		       abstraction_flag,
		       &PHY_vars_eNB_g[0][CC_id]->frame_parms,
		       UE_inst, CC_id);
	    do_DL_sig (r_re0,
		       r_im0,
		       r_re,
		       r_im,
		       s_re,
		       s_im,
		       eNB2UE,
		       enb_data,
		       ue_data,
		       (PHY_vars_eNB_g[0][CC_id]->proc.proc_rxtx[sf&1].subframe_tx<<1)+1,
		       abstraction_flag,
		       &PHY_vars_eNB_g[0][CC_id]->frame_parms,
		       UE_inst, CC_id);
	  }

	stop_meas (&dl_chan_stats);
        

	start_meas (&ul_chan_stats);
	
	for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
	  //#warning figure out what to do with UE frame_parms during initial_sync
	  do_UL_sig (r_re0, r_im0, r_re, r_im, s_re, s_im, UE2eNB,
		     enb_data, ue_data,
		     PHY_vars_UE_g[0][CC_id]->proc.proc_rxtx[sf&1].subframe_tx<<1,
		     abstraction_flag,
		     &PHY_vars_eNB_g[0][CC_id]->frame_parms,
		     frame % MAX_FRAME_NUMBER, CC_id);
	  do_UL_sig (r_re0, r_im0, r_re, r_im, s_re, s_im, UE2eNB,
		     enb_data, ue_data,
		     (PHY_vars_UE_g[0][CC_id]->proc.proc_rxtx[sf&1].subframe_tx<<1)+1,
		     abstraction_flag,
		     &PHY_vars_eNB_g[0][CC_id]->frame_parms,
		     frame % MAX_FRAME_NUMBER, CC_id);
	}
	
	stop_meas (&ul_chan_stats);

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	*/
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	if ((sf == 0) && ((frame % MAX_FRAME_NUMBER) == 0) && (abstraction_flag == 0)
	    && (oai_emulation.info.n_frames == 1)) {
	  
	  write_output ("dlchan0.m",
			"dlch0",
			&(PHY_vars_UE_g[0][0]->common_vars.dl_ch_estimates[0][0][0]),
			(6
			 * (PHY_vars_UE_g[0][0]->frame_parms.ofdm_symbol_size)),
			1, 1);
	  write_output ("dlchan1.m",
			"dlch1",
			&(PHY_vars_UE_g[0][0]->common_vars.dl_ch_estimates[1][0][0]),
			(6
			 * (PHY_vars_UE_g[0][0]->frame_parms.ofdm_symbol_size)),
			1, 1);
	  write_output ("dlchan2.m",
			"dlch2",
			&(PHY_vars_UE_g[0][0]->common_vars.dl_ch_estimates[2][0][0]),
			(6
			 * (PHY_vars_UE_g[0][0]->frame_parms.ofdm_symbol_size)),
			1, 1);
	  write_output ("pbch_rxF_comp0.m",
			"pbch_comp0",
			PHY_vars_UE_g[0][0]->pbch_vars[0]->rxdataF_comp[0],
			6 * 12 * 4, 1, 1);
	  write_output ("pbch_rxF_llr.m", "pbch_llr",
			PHY_vars_UE_g[0][0]->pbch_vars[0]->llr,
			(frame_parms[0]->Ncp == 0) ? 1920 : 1728, 1,
			4);
	}
    
	stop_meas (&oaisim_stats_f);
      } // SUBFRAME INNER PART
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    }
  
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    if ((frame >= 10) && (frame <= 11) && (abstraction_flag == 0)
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#ifdef PROC
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	&&(Channel_Flag==0)
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#endif
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	) {
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      sprintf (fname, "UEtxsig%d.m", frame % MAX_FRAME_NUMBER);
      sprintf (vname, "txs%d", frame % MAX_FRAME_NUMBER);
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      write_output (fname,
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		    vname,
		    PHY_vars_UE_g[0][0]->common_vars.txdata[0],
		    PHY_vars_UE_g[0][0]->frame_parms.samples_per_tti
		    * 10,
		    1, 1);
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      sprintf (fname, "eNBtxsig%d.m", frame % MAX_FRAME_NUMBER);
      sprintf (vname, "txs%d", frame % MAX_FRAME_NUMBER);
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      write_output (fname,
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		    vname,
		    PHY_vars_eNB_g[0][0]->common_vars.txdata[0][0],
		    PHY_vars_UE_g[0][0]->frame_parms.samples_per_tti
		    * 10,
		    1, 1);
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      sprintf (fname, "eNBtxsigF%d.m", frame % MAX_FRAME_NUMBER);
      sprintf (vname, "txsF%d", frame % MAX_FRAME_NUMBER);
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      write_output (fname,
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		    vname,
		    PHY_vars_eNB_g[0][0]->common_vars.txdataF[0][0],
		    PHY_vars_eNB_g[0][0]->frame_parms.symbols_per_tti
		    * PHY_vars_eNB_g[0][0]->frame_parms.ofdm_symbol_size,
		    1, 1);
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      sprintf (fname, "UErxsig%d.m", frame % MAX_FRAME_NUMBER);
      sprintf (vname, "rxs%d", frame % MAX_FRAME_NUMBER);
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      write_output (fname,
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		    vname,
		    PHY_vars_UE_g[0][0]->common_vars.rxdata[0],
		    PHY_vars_UE_g[0][0]->frame_parms.samples_per_tti
		    * 10,
		    1, 1);
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      sprintf (fname, "eNBrxsig%d.m", frame % MAX_FRAME_NUMBER);
      sprintf (vname, "rxs%d", frame % MAX_FRAME_NUMBER);
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      write_output (fname,
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		    vname,
		    PHY_vars_eNB_g[0][0]->common_vars.rxdata[0][0],
		    PHY_vars_UE_g[0][0]->frame_parms.samples_per_tti
		    * 10,
		    1, 1);
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    }
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    //#ifdef XFORMS
    if (xforms==1) {
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      eNB_inst = 0;
      
      for (UE_inst = 0; UE_inst < NB_UE_INST; UE_inst++) {
	for (CC_id=0;CC_id<MAX_NUM_CCs;CC_id++) {
	  phy_scope_UE(form_ue[CC_id][UE_inst],
		   PHY_vars_UE_g[UE_inst][CC_id],
		   eNB_inst,
		   UE_inst,
		   7);
	}
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	phy_scope_eNB(form_enb[UE_inst],
		      PHY_vars_eNB_g[eNB_inst][0],
		      UE_inst);
	
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      }
    }
    //#endif
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#ifdef SMBV
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    // Rohde&Schwarz SMBV100A vector signal generator
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    if ((frame % MAX_FRAME_NUMBER == config_frames[0]) || (frame % MAX_FRAME_NUMBER == config_frames[1]) || (frame % MAX_FRAME_NUMBER == config_frames[2]) || (frame % MAX_FRAME_NUMBER == config_frames[3])) {
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      smbv_frame_cnt++;
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    }
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#endif
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  } // frame loop
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  stop_meas (&oaisim_stats);
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  oai_shutdown ();
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#ifdef PRINT_STATS
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  for (UE_inst=0; UE_inst<NB_UE_INST; UE_inst++) {
    if (UE_stats[UE_inst])
      fclose (UE_stats[UE_inst]);
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    if(UE_stats_th[UE_inst])
      fclose (UE_stats_th[UE_inst]);
  }
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  for (eNB_inst=0; eNB_inst<NB_eNB_INST; eNB_inst++) {
    if (eNB_stats[eNB_inst])
      fclose (eNB_stats[eNB_inst]);
  }
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  if (eNB_avg_thr)
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    fclose (eNB_avg_thr);
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  if (eNB_l2_stats)
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    fclose (eNB_l2_stats);
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#endif
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#if defined(ENABLE_ITTI)
  itti_terminate_tasks(TASK_L2L1);
#endif
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  return NULL;
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}
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#if T_TRACER
int T_wait = 1;       /* by default we wait for the tracer */
int T_port = 2021;    /* default port to listen to to wait for the tracer */
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int T_dont_fork = 0;  /* default is to fork, see 'T_init' to understand */
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#endif

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/*------------------------------------------------------------------------------*/
int
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main (int argc, char **argv)
{
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  clock_t t;
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#ifdef SMBV
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  // Rohde&Schwarz SMBV100A vector signal generator
  strcpy(smbv_ip,DEFAULT_SMBV_IP);
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