oaisim_functions.c 49.4 KB
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/*******************************************************************************

  Eurecom OpenAirInterface
  Copyright(c) 1999 - 2014 Eurecom

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope 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.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information
  Openair Admin: openair_admin@eurecom.fr
  Openair Tech : openair_tech@eurecom.fr
  Forums       : http://forums.eurecom.fsr/openairinterface
  Address      : Eurecom, 2229, route des crêtes, 06560 Valbonne Sophia Antipolis, France

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


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#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
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#include <execinfo.h>
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#include <time.h>
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#include <mcheck.h>
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#include <sys/timerfd.h>
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#include "assertions.h"
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#include "oaisim_functions.h"

#include "PHY/extern.h"
#include "MAC_INTERFACE/extern.h"
#include "LAYER2/MAC/extern.h"
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#ifdef OPENAIR2
#include "LAYER2/MAC/proto.h"
#endif 
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#include "LAYER2/PDCP_v10.1.0/pdcp.h"
#include "LAYER2/PDCP_v10.1.0/pdcp_primitives.h"
#include "RRC/LITE/extern.h"
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#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
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#include "PHY_INTERFACE/extern.h"
#include "ARCH/CBMIMO1/DEVICE_DRIVER/extern.h"
#include "SCHED/extern.h"
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#include "SIMULATION/ETH_TRANSPORT/proto.h"
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#include "UTIL/OCG/OCG_extern.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
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#include "UTIL/OTG/otg_config.h"
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#include "UTIL/OTG/otg_tx.h"
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#include "lteRALenb.h"
#include "lteRALue.h"
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#include "cor_SF_sim.h"
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#include "enb_config.h"
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#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif

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#if defined(ENABLE_USE_MME)
# include "s1ap_eNB.h"
#endif

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#ifdef SMBV
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extern uint8_t config_smbv;
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extern char smbv_ip[16];
#endif

//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

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int           otg_times             = 0;
int           if_times              = 0;
int           for_times             = 0;

static char  *conf_config_file_name = NULL;
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uint16_t           Nid_cell              = 0; //needed by init_lte_vars
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int           nb_antennas_rx        = 2; // //
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uint8_t            target_dl_mcs         = 0; // not set
uint8_t            rate_adaptation_flag  = 0;
uint8_t            set_sinr              = 0;
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double        snr_dB, sinr_dB;
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uint8_t            set_seed              = 0;
uint8_t            cooperation_flag;          // for cooperative communication
uint8_t            abstraction_flag      = 0;
uint8_t            ethernet_flag         = 0;
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double        snr_step              = 1.0;
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uint8_t            ue_connection_test    = 0;
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double        forgetting_factor     = 0.0;
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uint8_t            beta_ACK              = 0;
uint8_t            beta_RI               = 0;
uint8_t            beta_CQI              = 2;
uint8_t            target_ul_mcs         = 4;
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LTE_DL_FRAME_PARMS *frame_parms     = NULL;
int           map1,map2;
double      **ShaF                  = NULL;
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// pointers signal buffers (s = transmit, r,r0 = receive)
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double      **s_re, **s_im, **r_re, **r_im, **r_re0, **r_im0;
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node_list*     ue_node_list          = NULL;
node_list*     enb_node_list         = NULL;
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int           omg_period            = 0;
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int           pdcp_period           = 0;
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// time calibration for soft realtime mode
struct timespec time_spec;
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unsigned long   time_last           = 0;
unsigned long   time_now            = 0;
int             td                  = 0;
int             td_avg              = 0;
int             sleep_time_us       = 0;
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#ifdef OPENAIR2
// omv related info
//pid_t omv_pid;
char full_name[200];
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extern int pfd[2]; // fd for omv : fixme: this could be a local var
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char fdstr[10];
char frames[10];
char num_enb[10];
char num_ue[10];
//area_x, area_y and area_z for omv
char x_area[20];
char y_area[20];
char z_area[20];
char nb_antenna[20];
char frame_type[10];
char tdd_config[10];
#endif

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Packet_OTG_List_t *otg_pdcp_buffer = NULL;
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extern node_desc_t *enb_data[NUMBER_OF_eNB_MAX];
extern node_desc_t *ue_data[NUMBER_OF_UE_MAX];
extern channel_desc_t *eNB2UE[NUMBER_OF_eNB_MAX][NUMBER_OF_UE_MAX];
extern channel_desc_t *UE2eNB[NUMBER_OF_UE_MAX][NUMBER_OF_eNB_MAX];

extern mapping small_scale_names[];
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#if defined(Rel10)
extern pdcp_mbms_t pdcp_mbms_array_ue[NUMBER_OF_UE_MAX][maxServiceCount][maxSessionPerPMCH];
extern pdcp_mbms_t pdcp_mbms_array_eNB[NUMBER_OF_eNB_MAX][maxServiceCount][maxSessionPerPMCH];
#endif
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extern time_stats_t dl_chan_stats;
extern time_stats_t ul_chan_stats;
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void get_simulation_options(int argc, char *argv[]) {
  int                           option;
  const Enb_properties_array_t *enb_properties;
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  enum long_option_e {
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    LONG_OPTION_START = 0x100, /* Start after regular single char options */
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    LONG_OPTION_ENB_CONF,
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    LONG_OPTION_PDNC_PERIOD,
    LONG_OPTION_OMG_PERIOD,
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    LONG_OPTION_OEH_ENABLED,
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    LONG_OPTION_ENB_RAL_LISTENING_PORT,
    LONG_OPTION_ENB_RAL_IP_ADDRESS,
    LONG_OPTION_ENB_RAL_LINK_ID,
    LONG_OPTION_ENB_RAL_LINK_ADDRESS,
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    LONG_OPTION_ENB_MIHF_REMOTE_PORT,
    LONG_OPTION_ENB_MIHF_IP_ADDRESS,
    LONG_OPTION_ENB_MIHF_ID,
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    LONG_OPTION_UE_RAL_LISTENING_PORT,
    LONG_OPTION_UE_RAL_IP_ADDRESS,
    LONG_OPTION_UE_RAL_LINK_ID,
    LONG_OPTION_UE_RAL_LINK_ADDRESS,
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    LONG_OPTION_UE_MIHF_REMOTE_PORT,
    LONG_OPTION_UE_MIHF_IP_ADDRESS,
    LONG_OPTION_UE_MIHF_ID,
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    LONG_OPTION_MALLOC_TRACE_ENABLED,
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  };
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  static struct option long_options[] = {
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      {"enb-conf",               required_argument, 0, LONG_OPTION_ENB_CONF},
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      {"pdcp-period",            required_argument, 0, LONG_OPTION_PDNC_PERIOD},
      {"omg-period",             required_argument, 0, LONG_OPTION_OMG_PERIOD},
      {"oeh-enabled",            no_argument, 0, LONG_OPTION_OEH_ENABLED},
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      {"enb-ral-listening-port", required_argument, 0, LONG_OPTION_ENB_RAL_LISTENING_PORT},
      {"enb-ral-ip-address",     required_argument, 0, LONG_OPTION_ENB_RAL_IP_ADDRESS},
      {"enb-ral-link-id",        required_argument, 0, LONG_OPTION_ENB_RAL_LINK_ID},
      {"enb-ral-link-address",   required_argument, 0, LONG_OPTION_ENB_RAL_LINK_ADDRESS},
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      {"enb-mihf-remote-port",   required_argument, 0, LONG_OPTION_ENB_MIHF_REMOTE_PORT},
      {"enb-mihf-ip-address",    required_argument, 0, LONG_OPTION_ENB_MIHF_IP_ADDRESS},
      {"enb-mihf-id",            required_argument, 0, LONG_OPTION_ENB_MIHF_ID},
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      {"ue-ral-listening-port",  required_argument, 0, LONG_OPTION_UE_RAL_LISTENING_PORT},
      {"ue-ral-ip-address",      required_argument, 0, LONG_OPTION_UE_RAL_IP_ADDRESS},
      {"ue-ral-link-id",         required_argument, 0, LONG_OPTION_UE_RAL_LINK_ID},
      {"ue-ral-link-address",    required_argument, 0, LONG_OPTION_UE_RAL_LINK_ADDRESS},
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      {"ue-mihf-remote-port",    required_argument, 0, LONG_OPTION_UE_MIHF_REMOTE_PORT},
      {"ue-mihf-ip-address",     required_argument, 0, LONG_OPTION_UE_MIHF_IP_ADDRESS},
      {"ue-mihf-id",             required_argument, 0, LONG_OPTION_UE_MIHF_ID},
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      {"malloc-trace-enabled",   no_argument,       0, LONG_OPTION_MALLOC_TRACE_ENABLED},
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      {NULL, 0, NULL, 0}
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  };
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  while ((option = getopt_long (argc, argv, "aA:b:B:c:C:D:d:eE:f:FGg:hHi:IJ:j:k:K:l:L:m:M:n:N:oO:p:P:qQ:rR:s:S:t:T:u:U:vV:w:W:x:X:y:Y:z:Z:", long_options, NULL)) != -1) {
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      switch (option) {
      case LONG_OPTION_ENB_CONF:
        if (optarg) {
            conf_config_file_name = strdup(optarg);
            printf("eNB configuration file is %s\n", conf_config_file_name);
        }
        break;
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      case LONG_OPTION_PDNC_PERIOD:
        if (optarg) {
            pdcp_period = atoi(optarg);
            printf("PDCP period is %d\n", pdcp_period);
        }
        break;
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      case LONG_OPTION_OMG_PERIOD:
        if (optarg) {
            omg_period = atoi(optarg);
            printf("OMG period is %d\n", omg_period);
        }
        break;
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      case LONG_OPTION_OEH_ENABLED:
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	      oai_emulation.info.oeh_enabled = 1;
	    break;

      case LONG_OPTION_MALLOC_TRACE_ENABLED:
    	 mtrace();
	     break;

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#if defined(ENABLE_RAL)
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      case LONG_OPTION_ENB_RAL_LISTENING_PORT:
        if (optarg) {
            g_conf_enb_ral_listening_port = strdup(optarg);
            printf("eNB RAL listening port is %s\n", g_conf_enb_ral_listening_port);
        }
        break;
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      case LONG_OPTION_ENB_RAL_IP_ADDRESS:
        if (optarg) {
            g_conf_enb_ral_ip_address = strdup(optarg);
            printf("eNB RAL IP address is %s\n", g_conf_enb_ral_ip_address);
        }
        break;
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      case LONG_OPTION_ENB_RAL_LINK_ADDRESS:
        if (optarg) {
            g_conf_enb_ral_link_address = strdup(optarg);
            printf("eNB RAL link address is %s\n", g_conf_enb_ral_link_address);
        }
        break;
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      case LONG_OPTION_ENB_RAL_LINK_ID:
        if (optarg) {
            g_conf_enb_ral_link_id = strdup(optarg);
            printf("eNB RAL link id is %s\n", g_conf_enb_ral_link_id);
        }
        break;
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      case LONG_OPTION_ENB_MIHF_REMOTE_PORT:
        if (optarg) {
            g_conf_enb_mihf_remote_port = strdup(optarg);
            printf("eNB MIH-F remote port is %s\n", g_conf_enb_mihf_remote_port);
        }
        break;
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      case LONG_OPTION_ENB_MIHF_IP_ADDRESS:
        if (optarg) {
            g_conf_enb_mihf_ip_address = strdup(optarg);
            printf("eNB MIH-F IP address is %s\n", g_conf_enb_mihf_ip_address);
        }
        break;
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      case LONG_OPTION_ENB_MIHF_ID:
        if (optarg) {
            g_conf_enb_mihf_id = strdup(optarg);
            printf("eNB MIH-F id is %s\n", g_conf_enb_mihf_id);
        }
        break;
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      case LONG_OPTION_UE_RAL_LISTENING_PORT:
        if (optarg) {
            g_conf_ue_ral_listening_port = strdup(optarg);
            printf("UE RAL listening port is %s\n", g_conf_ue_ral_listening_port);
        }
        break;
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      case LONG_OPTION_UE_RAL_IP_ADDRESS:
        if (optarg) {
            g_conf_ue_ral_ip_address = strdup(optarg);
            printf("UE RAL IP address is %s\n", g_conf_ue_ral_ip_address);
        }
        break;
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      case LONG_OPTION_UE_RAL_LINK_ID:
        if (optarg) {
            g_conf_ue_ral_link_id = strdup(optarg);
            printf("UE RAL link id is %s\n", g_conf_ue_ral_link_id);
        }
        break;
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      case LONG_OPTION_UE_RAL_LINK_ADDRESS:
        if (optarg) {
            g_conf_ue_ral_link_address = strdup(optarg);
            printf("UE RAL link address is %s\n", g_conf_ue_ral_link_address);
        }
        break;
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      case LONG_OPTION_UE_MIHF_REMOTE_PORT:
        if (optarg) {
            g_conf_ue_mihf_remote_port = strdup(optarg);
            printf("UE MIH-F remote port is %s\n", g_conf_ue_mihf_remote_port);
        }
        break;
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      case LONG_OPTION_UE_MIHF_IP_ADDRESS:
        if (optarg) {
            g_conf_ue_mihf_ip_address = strdup(optarg);
            printf("UE MIH-F IP address is %s\n", g_conf_ue_mihf_ip_address);
        }
        break;
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      case LONG_OPTION_UE_MIHF_ID:
        if (optarg) {
            g_conf_ue_mihf_id = strdup(optarg);
            printf("UE MIH-F id is %s\n", g_conf_ue_mihf_id);
        }
        break;
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#endif
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      case 'a':
        abstraction_flag = 1;
        break;

      case 'A':
        //oai_emulation.info.ocm_enabled=1;
        if (optarg == NULL)
          oai_emulation.environment_system_config.fading.small_scale.selected_option="AWGN";
        else
          oai_emulation.environment_system_config.fading.small_scale.selected_option= optarg;
        //awgn_flag = 1;
        break;

      case 'b':
        oai_emulation.info.nb_enb_local = atoi (optarg);
        break;

      case 'B':
        oai_emulation.topology_config.mobility.eNB_mobility.eNB_mobility_type.selected_option = optarg;
        //oai_emulation.info.omg_model_enb = atoi (optarg);
        break;

      case 'c':
        strcpy(oai_emulation.info.local_server, optarg);
        oai_emulation.info.ocg_enabled=1;
        break;

      case 'C':
        oai_emulation.info.tdd_config = atoi (optarg);
        AssertFatal (oai_emulation.info.tdd_config <= TDD_Config__subframeAssignment_sa6, "Illegal tdd_config %d (should be 0-%d)!",
            oai_emulation.info.tdd_config, TDD_Config__subframeAssignment_sa6);
        break;

      case 'D':
        oai_emulation.info.multicast_ifname = strdup(optarg);
        break;

      case 'e':
        oai_emulation.info.extended_prefix_flag = 1;
        break;

      case 'E':
        set_seed = 1;
        oai_emulation.info.seed = atoi (optarg);
        break;

      case 'f':
        forgetting_factor = atof (optarg);
        break;

      case 'F':                   // set FDD
        printf("Setting Frame to FDD\n");
        oai_emulation.info.frame_type = 0;
        break;

      case 'g':
        oai_emulation.info.multicast_group = atoi (optarg);
        break;

      case 'G' :
        oai_emulation.info.otg_bg_traffic_enabled = 1;
        break;

      case 'h':
        help ();
        exit (1);
        break;

      case 'H':
        oai_emulation.info.handover_active=1;
        printf("Activate the handover procedure at RRC\n");
        break;

      case 'i':
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#ifdef PROC
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        Process_Flag=1;
        node_id = wgt+atoi(optarg);
        port+=atoi(optarg);
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#endif
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        break;

      case 'I':
        oai_emulation.info.cli_enabled = 1;
        break;

      case 'j' :
        // number of relay nodes: currently only applicable to eMBMS
        oai_emulation.info.nb_rn_local = atoi (optarg);
        break;

      case 'J':
        ue_connection_test=1;
        oai_emulation.info.ocm_enabled=0;
        snr_step = atof(optarg);
        break;

      case 'k':
        //ricean_factor = atof (optarg);
        printf("[SIM] Option k is no longer supported on the command line. Please specify your channel model in the xml template\n");
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        exit(-1);
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        break;

      case 'K':
        oai_emulation.info.itti_dump_file = optarg;
        break;

      case 'l':
        oai_emulation.info.g_log_level = atoi(optarg);
        break;

      case 'L':                   // set FDD
        flag_LA = atoi(optarg);
        break;

      case 'm':
        target_dl_mcs = atoi (optarg);
        break;

      case 'M':
        abstraction_flag = 1;
        ethernet_flag = 1;
        oai_emulation.info.ethernet_id = atoi (optarg);
        oai_emulation.info.master_id = oai_emulation.info.ethernet_id;
        oai_emulation.info.ethernet_flag = 1;
        break;

      case 'n':
        oai_emulation.info.n_frames = atoi (optarg);
        //n_frames = (n_frames >1024) ? 1024: n_frames; // adjust the n_frames if higher that 1024
        oai_emulation.info.n_frames_flag = 1;
        break;

      case 'N':
        Nid_cell = atoi (optarg);
        if (Nid_cell > 503) {
            printf("Illegal Nid_cell %d (should be 0 ... 503)\n", Nid_cell);
            exit(-1);
        }
        break;

      case 'O':
        conf_config_file_name = optarg;
        break;

      case 'o':
        oai_emulation.info.slot_isr = 1;
        break;

      case 'p':
        oai_emulation.info.nb_master = atoi (optarg);
        break;

      case 'P':
        oai_emulation.info.opt_enabled = 1;

        if (strcmp(optarg, "wireshark") == 0) {
            opt_type = OPT_WIRESHARK;
            printf("Enabling OPT for wireshark\n");
        } else if (strcmp(optarg, "pcap") == 0) {
            opt_type = OPT_PCAP;
            printf("Enabling OPT for pcap\n");
        } else {
            printf("Unrecognized option for OPT module. -> Disabling it\n");
            printf("Possible values are either wireshark or pcap\n");
            opt_type = OPT_NONE;
            oai_emulation.info.opt_enabled = 0;
        }
        oai_emulation.info.opt_mode = opt_type;
        break;
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      case 'q':
        // openair performane profiler 
        oai_emulation.info.opp_enabled = 1; // this var is used for OCG
        opp_enabled = 1; // this is the global var used by oaisim 
        break;
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      case 'Q':
        //eMBMS_active=1;
        // 0 : not used (default), 1: eMBMS and RRC enabled, 2: eMBMS relaying and RRC enabled, 3: eMBMS enabled, RRC disabled, 4: eMBMS relaying enabled, RRC disabled
        oai_emulation.info.eMBMS_active_state = atoi (optarg);
        break;

      case 'r':
        rate_adaptation_flag = 1;
        break;

      case 'R':
        oai_emulation.info.N_RB_DL = atoi (optarg);
        if ((oai_emulation.info.N_RB_DL != 6) && (oai_emulation.info.N_RB_DL != 15) && (oai_emulation.info.N_RB_DL != 25)
            && (oai_emulation.info.N_RB_DL != 50) && (oai_emulation.info.N_RB_DL != 75) && (oai_emulation.info.N_RB_DL != 100)) {
            printf("Illegal N_RB_DL %d (should be one of 6,15,25,50,75,100)\n", oai_emulation.info.N_RB_DL);
            exit (-1);
        }
        break;

      case 's':
        snr_dB = atoi (optarg);
        //      set_snr = 1;
        oai_emulation.info.ocm_enabled=0;
        break;

      case 'S':
        sinr_dB = atoi (optarg);
        set_sinr = 1;
        oai_emulation.info.ocm_enabled=0;
        break;

      case 't':
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        target_ul_mcs = atoi (optarg);
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        break;

      case 'T':
        oai_emulation.info.otg_enabled = 1;
        oai_emulation.info.otg_traffic = optarg;
        break;

      case 'u':
        oai_emulation.info.nb_ue_local = atoi (optarg);
        break;

      case 'U':
        oai_emulation.topology_config.mobility.UE_mobility.UE_mobility_type.selected_option = optarg;
        break;

      case 'v':
        oai_emulation.info.omv_enabled = 1;
        break;

      case 'V':
        ouput_vcd = 1;
        oai_emulation.info.vcd_enabled = 1;
        oai_emulation.info.vcd_file = optarg;
        break;

      case 'w':
        oai_emulation.info.cba_group_active = atoi (optarg);
        break;

      case 'W':
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#ifdef SMBV
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        config_smbv = 1;
        if(atoi(optarg)!=0)
          strcpy(smbv_ip,optarg);
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#endif
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        break;
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      case 'x':
        oai_emulation.info.transmission_mode = atoi (optarg);
        if ((oai_emulation.info.transmission_mode != 1) &&  (oai_emulation.info.transmission_mode != 2) && (oai_emulation.info.transmission_mode != 5) && (oai_emulation.info.transmission_mode != 6)) {
            printf("Unsupported transmission mode %d\n",oai_emulation.info.transmission_mode);
            exit(-1);
        }
        break;
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      case 'X':
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#ifdef PROC
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        temp=atoi(optarg);
        if(temp==0){
            port=CHANNEL_PORT; Channel_Flag=1; Process_Flag=0; wgt=0;
        }
        else if(temp==1){
            port=eNB_PORT; wgt=0;
        }
        else {
            port=UE_PORT; wgt=MAX_eNB;
        }
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#endif
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        break;
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      case 'y':
        nb_antennas_rx=atoi(optarg);
        if (nb_antennas_rx>4) {
            printf("Cannot have more than 4 antennas\n");
            exit(-1);
        }
        break;
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      case 'Y':
        oai_emulation.info.g_log_verbosity_option = strdup(optarg);
        break;
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      case 'z':
        cooperation_flag = atoi (optarg);
        break;
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      case 'Z':
        /* Sebastien ROUX: Reserved for future use (currently used in ltenow branch) */
        break;
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      default:
        help ();
        exit (-1);
        break;
      }
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  }
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  if ((oai_emulation.info.nb_enb_local > 0) && (conf_config_file_name != NULL))
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    {
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      /* Read eNB configuration file */
      enb_properties = enb_config_init(conf_config_file_name);

      AssertFatal (oai_emulation.info.nb_enb_local <= enb_properties->number,
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          "Number of eNB is greater than eNB defined in configuration file %s (%d/%d)!",
          conf_config_file_name, oai_emulation.info.nb_enb_local, enb_properties->number);
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      /* Update some simulation parameters */
      oai_emulation.info.frame_type =           enb_properties->properties[0]->frame_type;
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      oai_emulation.info.tdd_config =           enb_properties->properties[0]->tdd_config;
      oai_emulation.info.tdd_config_S =         enb_properties->properties[0]->tdd_config_s;
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      oai_emulation.info.extended_prefix_flag = enb_properties->properties[0]->prefix_type;
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    }
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}

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void check_and_adjust_params(void) {
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  int32_t ret;
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  int i,j;

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  if (oai_emulation.info.nb_ue_local  + oai_emulation.info.nb_rn_local > NUMBER_OF_UE_MAX) {
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      LOG_E(EMU,"Enter fewer than %d UEs/RNs for the moment or change the NUMBER_OF_UE_MAX\n", NUMBER_OF_UE_MAX);
      exit(EXIT_FAILURE);
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  }

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  if (oai_emulation.info.nb_enb_local + oai_emulation.info.nb_rn_local > NUMBER_OF_eNB_MAX) {
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      LOG_E(EMU,"Enter fewer than %d eNBs/RNs for the moment or change the NUMBER_OF_UE_MAX\n", NUMBER_OF_eNB_MAX);
      exit(EXIT_FAILURE);
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  }
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  if (oai_emulation.info.nb_rn_local > NUMBER_OF_RN_MAX) {
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      LOG_E(EMU,"Enter fewer than %d RNs for the moment or change the NUMBER_OF_RN_MAX\n", NUMBER_OF_RN_MAX);
      exit(EXIT_FAILURE);
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  }
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  // fix ethernet and abstraction with RRC_CELLULAR Flag
#ifdef RRC_CELLULAR
  abstraction_flag = 1;
  ethernet_flag = 1;
#endif

  if (set_sinr == 0)
    sinr_dB = snr_dB - 20;

  // setup netdevice interface (netlink socket)
  LOG_I(EMU,"[INIT] Starting NAS netlink interface\n");
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  ret = netlink_init();
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  if (ret < 0)
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    LOG_W(EMU,"[INIT] Netlink not available, careful ...\n");
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  if (ethernet_flag == 1) {
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      oai_emulation.info.master[oai_emulation.info.master_id].nb_ue = oai_emulation.info.nb_ue_local + oai_emulation.info.nb_rn_local;
      oai_emulation.info.master[oai_emulation.info.master_id].nb_enb = oai_emulation.info.nb_enb_local + oai_emulation.info.nb_rn_local;
      if (oai_emulation.info.nb_rn_local>0)
        LOG_N(EMU,"Ethernet emulation is not yet tested with the relay nodes\n");
      if (!oai_emulation.info.master_id)
        oai_emulation.info.is_primary_master = 1;
      j = 1;
      for (i = 0; i < oai_emulation.info.nb_master; i++) {
          if (i != oai_emulation.info.master_id)
            oai_emulation.info.master_list = oai_emulation.info.master_list + j;
          LOG_I (EMU, "Index of master id i=%d  MASTER_LIST %d\n", i, oai_emulation.info.master_list);
          j *= 2;
      }
      LOG_I (EMU, " Total number of master %d my master id %d\n", oai_emulation.info.nb_master, oai_emulation.info.master_id);
      init_bypass ();
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      while (emu_tx_status != SYNCED_TRANSPORT) {
          LOG_I (EMU, " Waiting for EMU Transport to be synced\n");
          emu_transport_sync ();    //emulation_tx_rx();
      }
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  } // ethernet flag

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  //
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  NB_UE_INST = oai_emulation.info.nb_ue_local + oai_emulation.info.nb_ue_remote;
  NB_eNB_INST = oai_emulation.info.nb_enb_local + oai_emulation.info.nb_enb_remote;
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  NB_RN_INST = oai_emulation.info.nb_rn_local + oai_emulation.info.nb_rn_remote;

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#if defined(ENABLE_PDCP_NETLINK_FIFO) && defined(OPENAIR2)
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  pdcp_netlink_init();
#endif

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  if (NB_RN_INST > 0 ) {
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      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);
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      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;
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  }
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  LOG_I(EMU,"Total number of UE %d (first local %d , num local %d, remote %d, relay %d) mobility %s \n",
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      NB_UE_INST,oai_emulation.info.first_ue_local, oai_emulation.info.nb_ue_local,oai_emulation.info.nb_ue_remote,
      NB_RN_INST,
      oai_emulation.topology_config.mobility.UE_mobility.UE_mobility_type.selected_option);
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  LOG_I(EMU,"Total number of eNB %d (local %d, remote %d, relay %d) mobility %s \n",
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      NB_eNB_INST,oai_emulation.info.nb_enb_local,oai_emulation.info.nb_enb_remote,
      NB_RN_INST,
      oai_emulation.topology_config.mobility.eNB_mobility.eNB_mobility_type.selected_option);
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}

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#ifdef OPENAIR2
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void init_omv(void) {
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  if (oai_emulation.info.omv_enabled == 1) {

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      if(pipe(pfd) == -1)
        perror("pipe error \n");
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      sprintf(full_name, "%s/UTIL/OMV/OMV",getenv("OPENAIR2_DIR"));
      LOG_I(EMU,"Stating the OMV path %s pfd[0] %d pfd[1] %d \n", full_name, pfd[0],pfd[1]);
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      switch(fork()) {
      case -1 :
        perror("fork failed \n");
        break;
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      case 0 : // child is going to be the omv, it is the reader
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        if(close(pfd[1]) == -1 ) // we close the write desc.
          perror("close on write\n" );
        sprintf(fdstr, "%d", pfd[0] );
        sprintf(num_enb, "%d", NB_eNB_INST);
        sprintf(num_ue, "%d", NB_UE_INST);
        sprintf(x_area, "%f", oai_emulation.topology_config.area.x_m );
        sprintf(y_area, "%f", oai_emulation.topology_config.area.y_m );
        sprintf(z_area, "%f", 200.0 );
        sprintf(frames, "%d", oai_emulation.info.n_frames);
        sprintf(nb_antenna, "%d", 4);
        sprintf(frame_type, "%s", (oai_emulation.info.frame_type == 0) ? "FDD" : "TDD");
        sprintf(tdd_config, "%d", oai_emulation.info.tdd_config);
        // execl is used to launch the visualisor
        execl(full_name,"OMV", fdstr, frames, num_enb, num_ue, x_area, y_area, z_area, nb_antenna, frame_type, tdd_config,NULL );
        perror( "error in execl the OMV" );
      }
      //parent
      if(close( pfd[0] ) == -1 ) // we close the write desc.
        perror("close on read\n" );
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  }
}
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#endif
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void init_seed(uint8_t set_seed) {
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  if(set_seed) {

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      randominit (oai_emulation.info.seed);
      set_taus_seed (oai_emulation.info.seed);
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  } else {
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      randominit (0);
      set_taus_seed (0);
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  }
}

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void init_openair1(void) {
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  module_id_t UE_id, eNB_id;
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#if defined(ENABLE_RAL)
  int list_index;
#endif
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  // change the nb_connected_eNB
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  init_lte_vars (&frame_parms, oai_emulation.info.frame_type, oai_emulation.info.tdd_config, oai_emulation.info.tdd_config_S,oai_emulation.info.extended_prefix_flag,oai_emulation.info.N_RB_DL, Nid_cell, cooperation_flag, oai_emulation.info.transmission_mode, abstraction_flag,nb_antennas_rx, oai_emulation.info.eMBMS_active_state);
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  for (eNB_id=0; eNB_id<NB_eNB_INST;eNB_id++){
      for (UE_id=0; UE_id<NB_UE_INST;UE_id++){
          PHY_vars_eNB_g[eNB_id]->pusch_config_dedicated[UE_id].betaOffset_ACK_Index = beta_ACK;
          PHY_vars_eNB_g[eNB_id]->pusch_config_dedicated[UE_id].betaOffset_RI_Index  = beta_RI;
          PHY_vars_eNB_g[eNB_id]->pusch_config_dedicated[UE_id].betaOffset_CQI_Index = beta_CQI;
          PHY_vars_UE_g[UE_id]->pusch_config_dedicated[eNB_id].betaOffset_ACK_Index = beta_ACK;
          PHY_vars_UE_g[UE_id]->pusch_config_dedicated[eNB_id].betaOffset_RI_Index  = beta_RI;
          PHY_vars_UE_g[UE_id]->pusch_config_dedicated[eNB_id].betaOffset_CQI_Index = beta_CQI;
          ((PHY_vars_UE_g[UE_id]->lte_frame_parms).pdsch_config_common).p_b = (frame_parms->nb_antennas_tx_eNB>1) ? 1 : 0; // rho_a = rhob
          ((PHY_vars_eNB_g[eNB_id]->lte_frame_parms).pdsch_config_common).p_b = (frame_parms->nb_antennas_tx_eNB>1) ? 1 : 0; // rho_a = rhob

      }
  }

  printf ("AFTER init: Nid_cell %d\n", PHY_vars_eNB_g[0]->lte_frame_parms.Nid_cell);
  printf ("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);
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  number_of_cards = 1;

  openair_daq_vars.rx_rf_mode = 1;
  openair_daq_vars.tdd = 1;
  openair_daq_vars.rx_gain_mode = DAQ_AGC_ON;

  openair_daq_vars.dlsch_transmission_mode = oai_emulation.info.transmission_mode;

  openair_daq_vars.target_ue_dl_mcs = target_dl_mcs;
  openair_daq_vars.target_ue_ul_mcs = target_ul_mcs;
  openair_daq_vars.ue_dl_rb_alloc=0x1fff;
  openair_daq_vars.ue_ul_nb_rb=6;
  openair_daq_vars.dlsch_rate_adaptation = rate_adaptation_flag;
  openair_daq_vars.use_ia_receiver = 0;

  // init_ue_status();
  for (UE_id=0; UE_id<NB_UE_INST;UE_id++) {
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      PHY_vars_UE_g[UE_id]->rx_total_gain_dB=130;
      // update UE_mode for each eNB_id not just 0
      if (abstraction_flag == 0)
        PHY_vars_UE_g[UE_id]->UE_mode[0] = NOT_SYNCHED;
      else {
          // 0 is the index of the connected eNB
          PHY_vars_UE_g[UE_id]->UE_mode[0] = PRACH;
      }
      PHY_vars_UE_g[UE_id]->lte_ue_pdcch_vars[0]->crnti = 0x1235 + UE_id;
      PHY_vars_UE_g[UE_id]->current_dlsch_cqi[0] = 10;
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      LOG_I(EMU, "UE %d mode is initialized to %d\n", UE_id, PHY_vars_UE_g[UE_id]->UE_mode[0] );
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#if defined(ENABLE_RAL)
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      PHY_vars_UE_g[UE_id]->ral_thresholds_timed = hashtable_create (64, NULL, NULL);
      for (list_index = 0; list_index < RAL_LINK_PARAM_GEN_MAX; list_index++) {
          SLIST_INIT(&PHY_vars_UE_g[UE_id]->ral_thresholds_gen_polled[list_index]);
      }
      for (list_index = 0; list_index < RAL_LINK_PARAM_LTE_MAX; list_index++) {
          SLIST_INIT(&PHY_vars_UE_g[UE_id]->ral_thresholds_lte_polled[list_index]);
      }
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#endif

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  }
}

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void init_openair2(void) {
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#ifdef OPENAIR2
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  module_id_t enb_id;
  module_id_t UE_id;
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  l2_init (&PHY_vars_eNB_g[0]->lte_frame_parms,
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      oai_emulation.info.eMBMS_active_state,
      oai_emulation.info.cba_group_active,
      oai_emulation.info.handover_active);
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  for (enb_id = 0; enb_id < NB_eNB_INST; enb_id++)
    mac_xface->mrbch_phy_sync_failure (enb_id, 0, enb_id);
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  if (abstraction_flag == 1) {
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      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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  }

  mac_xface->macphy_exit = exit_fun;
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#endif
}

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void init_ocm(void) {
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  module_id_t UE_id, eNB_id;
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  /* Added for PHY abstraction */
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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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  if (abstraction_flag) {
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      get_beta_map();
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#ifdef PHY_ABSTRACTION_UL
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      get_beta_map_up();
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#endif
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      get_MIESM_param();
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      //load_pbch_desc();
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  }
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  for (eNB_id = 0; eNB_id < NB_eNB_INST; eNB_id++) {
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      enb_data[eNB_id] = (node_desc_t *)malloc(sizeof(node_desc_t));
      init_enb(enb_data[eNB_id],oai_emulation.environment_system_config.antenna.eNB_antenna);
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  }

  for (UE_id = 0; UE_id < NB_UE_INST; UE_id++) {
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      ue_data[UE_id] = (node_desc_t *)malloc(sizeof(node_desc_t));
      init_ue(ue_data[UE_id],oai_emulation.environment_system_config.antenna.UE_antenna);
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  }

  if ((oai_emulation.info.ocm_enabled == 1)&& (ethernet_flag == 0 ) &&
      (oai_emulation.environment_system_config.fading.shadowing.decorrelation_distance_m>0) &&
      (oai_emulation.environment_system_config.fading.shadowing.variance_dB>0)) {

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      // init SF map here!!!
      map1 =(int)oai_emulation.topology_config.area.x_m;
      map2 =(int)oai_emulation.topology_config.area.y_m;
      ShaF = init_SF(map1,map2,oai_emulation.environment_system_config.fading.shadowing.decorrelation_distance_m,oai_emulation.environment_system_config.fading.shadowing.variance_dB);
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      // size of area to generate shadow fading map
      LOG_D(EMU,"Simulation area x=%f, y=%f\n",
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          oai_emulation.topology_config.area.x_m,
          oai_emulation.topology_config.area.y_m);
  }

  if (abstraction_flag == 0)
    init_channel_vars (frame_parms, &s_re, &s_im, &r_re, &r_im, &r_re0, &r_im0);

  // initialize channel descriptors
  for (eNB_id = 0; eNB_id < NB_eNB_INST; eNB_id++) {
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      for (UE_id = 0; UE_id < NB_UE_INST; UE_id++) {
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          LOG_D(OCM,"Initializing channel (%s, %d) from eNB %d to UE %d\n", oai_emulation.environment_system_config.fading.small_scale.selected_option,
              map_str_to_int(small_scale_names,oai_emulation.environment_system_config.fading.small_scale.selected_option), eNB_id, UE_id);
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          /* if (oai_emulation.info.transmission_mode == 5)
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                    eNB2UE[eNB_id][UE_id] = new_channel_desc_scm(PHY_vars_eNB_g[eNB_id]->lte_frame_parms.nb_antennas_tx,
                                                       PHY_vars_UE_g[UE_id]->lte_frame_parms.nb_antennas_rx,
                                                       (UE_id == 0)? Rice1_corr : Rice1_anticorr,
                                                       oai_emulation.environment_system_config.system_bandwidth_MB,
                                                       forgetting_factor,
                                                       0,
                                                       0);

                else
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           */

          eNB2UE[eNB_id][UE_id] = new_channel_desc_scm(PHY_vars_eNB_g[eNB_id]->lte_frame_parms.nb_antennas_tx,
              PHY_vars_UE_g[UE_id]->lte_frame_parms.nb_antennas_rx,
              map_str_to_int(small_scale_names,oai_emulation.environment_system_config.fading.small_scale.selected_option),
              oai_emulation.environment_system_config.system_bandwidth_MB,
              forgetting_factor,
              0,
              0);
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          random_channel(eNB2UE[eNB_id][UE_id],abstraction_flag);
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          LOG_D(OCM,"[SIM] Initializing channel (%s, %d) from UE %d to eNB %d\n", oai_emulation.environment_system_config.fading.small_scale.selected_option,
              map_str_to_int(small_scale_names, oai_emulation.environment_system_config.fading.small_scale.selected_option),UE_id, eNB_id);

          UE2eNB[UE_id][eNB_id] = new_channel_desc_scm(PHY_vars_UE_g[UE_id]->lte_frame_parms.nb_antennas_tx,
              PHY_vars_eNB_g[eNB_id]->lte_frame_parms.nb_antennas_rx,
              map_str_to_int(small_scale_names, oai_emulation.environment_system_config.fading.small_scale.selected_option),
              oai_emulation.environment_system_config.system_bandwidth_MB,
              forgetting_factor,
              0,
              0);

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      random_channel(UE2eNB[UE_id][eNB_id],abstraction_flag);
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      // to make channel reciprocal uncomment following line instead of previous. However this only works for SISO at the moment. For MIMO the channel would need to be transposed.
      //UE2eNB[UE_id][eNB_id] = eNB2UE[eNB_id][UE_id];
    }
  }
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}

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void init_otg_pdcp_buffer(void) {
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  module_id_t i;
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  otg_pdcp_buffer = malloc((NB_UE_INST + NB_eNB_INST) * sizeof(Packet_OTG_List_t));
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  for (i = 0; i < NB_UE_INST + NB_eNB_INST; i++) {
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      pkt_list_init(&(otg_pdcp_buffer[i]));
      //LOG_I(EMU,"HEAD of otg_pdcp_buffer[%d] is %p\n", i, pkt_list_get_head(&(otg_pdcp_buffer[i])));
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  }
}

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void update_omg (frame_t frameP) {
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  module_id_t UE_id, eNB_id;
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  int new_omg_model;

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  if ((frameP % omg_period) == 0 ) { // call OMG every 10ms
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      update_nodes(oai_emulation.info.time_s);
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      display_node_list(enb_node_list);
      display_node_list(ue_node_list);
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      if (oai_emulation.info.omg_model_ue >= MAX_NUM_MOB_TYPES){ // mix mobility model
          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++){
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              new_omg_model = randomgen(STATIC,RWALK);
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              LOG_D(OMG, "[UE] Node of ID %d is changing mobility generator ->%d \n", UE_id, new_omg_model);
              // reset the mobility model for a specific node
              set_new_mob_type (UE_id, UE, new_omg_model, oai_emulation.info.time_s);
          }
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      }

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      if (oai_emulation.info.omg_model_enb >= MAX_NUM_MOB_TYPES) {      // mix mobility model
          for (eNB_id = oai_emulation.info.first_enb_local; eNB_id < (oai_emulation.info.first_enb_local + oai_emulation.info.nb_enb_local); eNB_id++) {
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              new_omg_model = randomgen (STATIC, RWALK);
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              LOG_D (OMG,"[eNB] Node of ID %d is changing mobility generator ->%d \n", eNB_id, new_omg_model);
              // reset the mobility model for a specific node
              set_new_mob_type (eNB_id, eNB, new_omg_model, oai_emulation.info.time_s);
          }
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      }
  }
}

void update_omg_ocm() {
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 enb_node_list=get_current_positions(oai_emulation.info.omg_model_enb, eNB, oai_emulation.info.time_s);
 ue_node_list=get_current_positions(oai_emulation.info.omg_model_ue, UE, oai_emulation.info.time_s);

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}

void update_ocm() {
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  module_id_t UE_id, eNB_id;
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  for (eNB_id = 0; eNB_id < NB_eNB_INST; eNB_id++)
    enb_data[eNB_id]->tx_power_dBm = PHY_vars_eNB_g[eNB_id]->lte_frame_parms.pdsch_config_common.referenceSignalPower;
  for (UE_id = 0; UE_id < NB_UE_INST; UE_id++)
    ue_data[UE_id]->tx_power_dBm = PHY_vars_UE_g[UE_id]->tx_power_dBm;

  /* check if the openair channel model is activated used for PHY abstraction : path loss*/
  if ((oai_emulation.info.ocm_enabled == 1)&& (ethernet_flag == 0 )) {
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      //LOG_D(OMG," extracting position of eNb...\n");
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    //display_node_list(enb_node_list);
    //  display_node_list(ue_node_list);
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      extract_position(enb_node_list, enb_data, NB_eNB_INST);
      //extract_position_fixed_enb(enb_data, NB_eNB_INST,frame);
      //LOG_D(OMG," extracting position of UE...\n");
      //      if (oai_emulation.info.omg_model_ue == TRACE)
      extract_position(ue_node_list, ue_data, NB_UE_INST);

      /* if (frame % 50 == 0)
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      LOG_N(OCM,"Path loss for TTI %d : \n", frame);
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       */
      for (eNB_id = 0; eNB_id < NB_eNB_INST; eNB_id++) {
          for (UE_id = 0; UE_id < NB_UE_INST; UE_id++) {
              calc_path_loss (enb_data[eNB_id], ue_data[UE_id], eNB2UE[eNB_id][UE_id], oai_emulation.environment_system_config,ShaF);
              //calc_path_loss (enb_data[eNB_id], ue_data[UE_id], eNB2UE[eNB_id][UE_id], oai_emulation.environment_system_config,0);
              UE2eNB[UE_id][eNB_id]->path_loss_dB = eNB2UE[eNB_id][UE_id]->path_loss_dB;
              //    if (frame % 50 == 0)
              LOG_I(OCM,"Path loss between eNB %d at (%f,%f) and UE %d at (%f,%f) is %f, angle %f\n",
                  eNB_id,enb_data[eNB_id]->x,enb_data[eNB_id]->y,UE_id,ue_data[UE_id]->x,ue_data[UE_id]->y,
                  eNB2UE[eNB_id][UE_id]->path_loss_dB, eNB2UE[eNB_id][UE_id]->aoa);
          }
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      }
  }

  else {
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      for (eNB_id = 0; eNB_id < NB_eNB_INST; eNB_id++) {
          for (UE_id = 0; UE_id < NB_UE_INST; UE_id++) {

              //UE2eNB[UE_id][eNB_id]->path_loss_dB = -105 + snr_dB;
              if (eNB_id == (UE_id % NB_eNB_INST)) {
                  eNB2UE[eNB_id][UE_id]->path_loss_dB = -105 + snr_dB - PHY_vars_eNB_g[eNB_id]->lte_frame_parms.pdsch_config_common.referenceSignalPower;
                  UE2eNB[UE_id][eNB_id]->path_loss_dB = -105 + snr_dB - PHY_vars_eNB_g[eNB_id]->lte_frame_parms.pdsch_config_common.referenceSignalPower; //+20 to offset the difference in tx power of the UE wrt eNB
              }
              else {
                  eNB2UE[eNB_id][UE_id]->path_loss_dB = -105 + sinr_dB - PHY_vars_eNB_g[eNB_id]->lte_frame_parms.pdsch_config_common.referenceSignalPower;
                  UE2eNB[UE_id][eNB_id]->path_loss_dB = -105 + sinr_dB - PHY_vars_eNB_g[eNB_id]->lte_frame_parms.pdsch_config_common.referenceSignalPower;
              }
              LOG_I(OCM,"Path loss from eNB %d to UE %d => %f dB (eNB TX %d)\n",eNB_id,UE_id,eNB2UE[eNB_id][UE_id]->path_loss_dB,
                  PHY_vars_eNB_g[eNB_id]->lte_frame_parms.pdsch_config_common.referenceSignalPower);
              //      printf("[SIM] Path loss from UE %d to eNB %d => %f dB\n",UE_id,eNB_id,UE2eNB[UE_id][eNB_id]->path_loss_dB);
          }
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      }
  }
}

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#ifdef OPENAIR2
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void update_otg_eNB(module_id_t enb_module_idP, unsigned int ctime) {
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#if defined(USER_MODE) && defined(OAI_EMU)
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  if (oai_emulation.info.otg_enabled ==1 ) {

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      int dst_id, app_id;
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      Packet_otg_elt_t *otg_pkt;
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      for (dst_id = 0; dst_id < NUMBER_OF_UE_MAX; dst_id++) {
          for_times += 1;
          // generate traffic if the ue is rrc reconfigured state
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          if (mac_get_rrc_status(enb_module_idP, ENB_FLAG_YES, dst_id) > 2 /*RRC_CONNECTED*/ ) {
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	    if_times += 1;
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              for (app_id=0; app_id<MAX_NUM_APPLICATION; app_id++){
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                  otg_pkt = malloc (sizeof(Packet_otg_elt_t));
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                  (otg_pkt->otg_pkt).sdu_buffer = (uint8_t*) packet_gen(enb_module_idP, dst_id + NB_eNB_INST, app_id, ctime, &((otg_pkt->otg_pkt).sdu_buffer_size));
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                  if ((otg_pkt->otg_pkt).sdu_buffer != NULL) {
                      otg_times += 1;
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                      (otg_pkt->otg_pkt).rb_id = DTCH-2; // app could be binded to a given DRB
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                      (otg_pkt->otg_pkt).module_id = enb_module_idP;
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                      (otg_pkt->otg_pkt).dst_id = dst_id;
                      (otg_pkt->otg_pkt).is_ue = 0;
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                      (otg_pkt->otg_pkt).mode = PDCP_TRANSMISSION_MODE_DATA;
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                      //Adding the packet to the OTG-PDCP buffer
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#warning "Strange code: To be verifed"
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                      pkt_list_add_tail_eurecom(otg_pkt, &(otg_pdcp_buffer[enb_module_idP]));
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                      LOG_I(EMU,"[eNB %d] ADD pkt to OTG buffer with size %d for dst %d on rb_id %d for app id %d \n",
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                          (otg_pkt->otg_pkt).module_id, otg_pkt->otg_pkt.sdu_buffer_size, (otg_pkt->otg_pkt).dst_id,(otg_pkt->otg_pkt).rb_id, app_id);
                  } else {
                      free(otg_pkt);
                      otg_pkt=NULL;
                  }
              }
          }
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      }

#ifdef Rel10
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      mbms_service_id_t service_id;
      mbms_session_id_t session_id;
      rb_id_t           rb_id;
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      // MBSM multicast traffic
      // if (frame >= 50) {// only generate when UE can receive MTCH (need to control this value)
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      for (service_id = 0; service_id < 2 ; service_id++) { //maxServiceCount
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          for (session_id = 0; session_id < 2; session_id++) { // maxSessionPerPMCH
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              if (pdcp_mbms_array_eNB[enb_module_idP][service_id][session_id].instanciated_instance == TRUE){ // this service/session is configured
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                  otg_pkt = malloc (sizeof(Packet_otg_elt_t));
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                  // LOG_T(OTG,"multicast packet gen for (service/mch %d, session/lcid %d, rb_id %d)\n", service_id, session_id, service_id*maxSessionPerPMCH + session_id);
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                  rb_id = pdcp_mbms_array_eNB[enb_module_idP][service_id][session_id].rb_id;
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                  (otg_pkt->otg_pkt).sdu_buffer = (uint8_t*) packet_gen_multicast(enb_module_idP, session_id, ctime, &((otg_pkt->otg_pkt).sdu_buffer_size));
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                  if ((otg_pkt->otg_pkt).sdu_buffer != NULL) {
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                      (otg_pkt->otg_pkt).rb_id      = rb_id;
                      (otg_pkt->otg_pkt).module_id  = enb_module_idP;
                      (otg_pkt->otg_pkt).dst_id     = session_id;
                      (otg_pkt->otg_pkt).is_ue      = FALSE;
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                      //Adding the packet to the OTG-PDCP buffer
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                      (otg_pkt->otg_pkt).mode       = PDCP_TRANSMISSION_MODE_TRANSPARENT;
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                      pkt_list_add_tail_eurecom(otg_pkt, &(otg_pdcp_buffer[enb_module_idP]));
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                      LOG_I(EMU, "[eNB %d] ADD packet (%p) multicast to OTG buffer for dst %d on rb_id %d\n",
                          (otg_pkt->otg_pkt).module_id, otg_pkt, (otg_pkt->otg_pkt).dst_id,(otg_pkt->otg_pkt).rb_id);
                  } else {
                      //LOG_I(EMU, "OTG returns null \n");
                      free(otg_pkt);
                      otg_pkt=NULL;
                  }


                  // old version
                  /*	    // MBSM multicast traffic
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#ifdef Rel10
	    if (frame >= 46) {// only generate when UE can receive MTCH (need to control this value)
	      for (service_id = 0; service_id < 2 ; service_id++) { //maxServiceCount
		for (session_id = 0; session_id < 2; session_id++) { // maxSessionPerPMCH
		  //   LOG_I(OTG,"DUY:frame %d, pdcp_mbms_array[module_id][rb_id].instanciated_instance is %d\n",frame,pdcp_mbms_array[module_id][service_id*maxSessionPerPMCH + session_id].instanciated_instance);
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		  if ((pdcp_mbms_array[module_idP][service_id*maxSessionPerPMCH + session_id].instanciated_instance== module_idP + 1) && (eNB_flag == 1)){ // this service/session is configured
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		    // LOG_T(OTG,"multicast packet gen for (service/mch %d, session/lcid %d)\n", service_id, session_id);
		    // Duy add
		    LOG_I(OTG, "frame %d, multicast packet gen for (service/mch %d, session/lcid %d, rb_id %d)\n",frame, service_id, session_id,service_id*maxSessionPerPMCH + session_id);
		    // end Duy add
		    rb_id = pdcp_mbms_array[module_id][service_id*maxSessionPerPMCH + session_id].rb_id;
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		    otg_pkt=(uint8_t*) packet_gen_multicast(module_idP, session_id, ctime, &pkt_size);
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		    if (otg_pkt != NULL) {
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		      LOG_D(OTG,"[eNB %d] sending a multicast packet from module %d on rab id %d (src %d, dst %d) pkt size %d\n", eNB_index, module_idP, rb_id, module_idP, session_id, pkt_size);
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		      pdcp_data_req(module_id, frame, eNB_flag, rb_id, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, pkt_size, otg_pkt,PDCP_TM);
		      free(otg_pkt);
		    }
		  }
		}
	      }
	    } // end multicast traffic
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#endif
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                   */
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              }
          }
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      }
      //    } // end multicast traffic
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#endif
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  }
#else
  if (otg_enabled==1) {
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      ctime = frame * 100;
      for (dst_id = 0; dst_id < NUMBER_OF_UE_MAX; dst_id++) {
          if (mac_get_rrc_status(eNB_index, eNB_flag, dst_id ) > 2) {
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              otg_pkt = malloc (sizeof(Packet_otg_elt_t));
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              (