rrc_eNB.c 194 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
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  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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*******************************************************************************/

/*! \file rrc_eNB.c
 * \brief rrc procedures for eNB
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 * \author Navid Nikaein and  Raymond Knopp
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 * \date 2011 - 2014
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 * \version 1.0
 * \company Eurecom
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 * \email: navid.nikaein@eurecom.fr and raymond.knopp@eurecom.fr
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 */
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#define RRC_ENB
#define RRC_ENB_C
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#include "defs.h"
#include "extern.h"
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#include "assertions.h"
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#include "asn1_conversions.h"
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#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "LAYER2/RLC/rlc.h"
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#include "LAYER2/MAC/proto.h"
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#include "UTIL/LOG/log.h"
#include "COMMON/mac_rrc_primitives.h"
#include "RRC/LITE/MESSAGES/asn1_msg.h"
#include "RRCConnectionRequest.h"
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#include "RRCConnectionReestablishmentRequest.h"
//#include "ReestablishmentCause.h"
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#include "UL-CCCH-Message.h"
#include "DL-CCCH-Message.h"
#include "UL-DCCH-Message.h"
#include "DL-DCCH-Message.h"
#include "TDD-Config.h"
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#include "HandoverCommand.h"
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#include "rlc.h"
#include "SIMULATION/ETH_TRANSPORT/extern.h"
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#include "rrc_eNB_UE_context.h"
#include "platform_types.h"
#include "msc.h"
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//#ifdef Rel10
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#include "MeasResults.h"
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//#endif

#ifdef USER_MODE
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#   include "RRC/NAS/nas_config.h"
#   include "RRC/NAS/rb_config.h"
#   include "OCG.h"
#   include "OCG_extern.h"
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#endif

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#if defined(ENABLE_SECURITY)
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#   include "UTIL/OSA/osa_defs.h"
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#endif

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#if defined(ENABLE_USE_MME)
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#   include "rrc_eNB_S1AP.h"
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#   include "rrc_eNB_GTPV1U.h"
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#   if defined(ENABLE_ITTI)
#   else
#      include "../../S1AP/s1ap_eNB.h"
#   endif
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#endif

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#include "pdcp.h"

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

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#if ENABLE_RAL
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#   include "rrc_eNB_ral.h"
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#endif

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#include "SIMULATION/TOOLS/defs.h" // for taus

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//#define XER_PRINT

#ifdef PHY_EMUL
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extern EMULATION_VARS              *Emul_vars;
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#endif
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extern eNB_MAC_INST                *eNB_mac_inst;
extern UE_MAC_INST                 *UE_mac_inst;
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#ifdef BIGPHYSAREA
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extern void*                        bigphys_malloc(int);
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#endif

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extern uint16_t                     two_tier_hexagonal_cellIds[7];
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RRC:  
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/* TS 36.331: RRC-TransactionIdentifier ::= INTEGER (0..3) */
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static const uint8_t                RRC_TRANSACTION_IDENTIFIER_NUMBER = 4;
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mui_t                               rrc_eNB_mui = 0;
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//-----------------------------------------------------------------------------
static void
init_SI(
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  const protocol_ctxt_t* const ctxt_pP,
  const int              CC_id
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#if defined(ENABLE_ITTI)
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  ,
  RrcConfigurationReq * configuration
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#endif
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)
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//-----------------------------------------------------------------------------
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{
  uint8_t                             SIwindowsize = 1;
  uint16_t                            SIperiod = 8;
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#ifdef Rel10
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  int                                 i;
#endif
  /*
     uint32_t mib=0;
     int i;
     int N_RB_DL,phich_resource;

     do_MIB(enb_mod_idP, mac_xface->lte_frame_parms,0x321,&mib);

     for (i=0;i<1024;i+=4)
     do_MIB(enb_mod_idP, mac_xface->lte_frame_parms,i,&mib);

     N_RB_DL=6;
     while (N_RB_DL != 0) {
     phich_resource = 1;
     while (phich_resource != 0) {
     for (i=0;i<2;i++) {
     mac_xface->lte_frame_parms->N_RB_DL = N_RB_DL;
     mac_xface->lte_frame_parms->phich_config_common.phich_duration=i;
     mac_xface->lte_frame_parms->phich_config_common.phich_resource = phich_resource;
     do_MIB(enb_mod_idP, mac_xface->lte_frame_parms,0,&mib);
     }
     if (phich_resource == 1)
     phich_resource = 3;
     else if (phich_resource == 3)
     phich_resource = 6;
     else if (phich_resource == 6)
     phich_resource = 12;
     else if (phich_resource == 12)
     phich_resource = 0;
     }
     if (N_RB_DL == 6)
     N_RB_DL = 15;
     else if (N_RB_DL == 15)
     N_RB_DL = 25;
     else if (N_RB_DL == 25)
     N_RB_DL = 50;
     else if (N_RB_DL == 50)
     N_RB_DL = 75;
     else if (N_RB_DL == 75)
     N_RB_DL = 100;
     else if (N_RB_DL == 100)
     N_RB_DL = 0;
     }
     exit(-1);
   */
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  eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sizeof_SIB1 = 0;
  eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sizeof_SIB23 = 0;
  eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].SIB1 = (uint8_t*) malloc16(32);
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  /*
     printf ("before SIB1 init : Nid_cell %d\n", mac_xface->lte_frame_parms->Nid_cell);
     printf ("before SIB1 init : frame_type %d,tdd_config %d\n",
     mac_xface->lte_frame_parms->frame_type,
     mac_xface->lte_frame_parms->tdd_config);
   */
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  if (eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].SIB1)
    eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sizeof_SIB1 = do_SIB1(
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          ctxt_pP->module_id,
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          CC_id,
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          mac_xface->lte_frame_parms,
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          (uint8_t*)eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].SIB1,
          &eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].siblock1,
          &eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib1
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#if defined(ENABLE_ITTI)
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          , configuration
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#endif
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        );
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  else {
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    LOG_E(RRC, PROTOCOL_RRC_CTXT_FMT" init_SI: FATAL, no memory for SIB1 allocated\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP));
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    mac_xface->macphy_exit("[RRC][init_SI] FATAL, no memory for SIB1 allocated");
  }

  /*
     printf ("after SIB1 init : Nid_cell %d\n", mac_xface->lte_frame_parms->Nid_cell);
     printf ("after SIB1 init : frame_type %d,tdd_config %d\n",
     mac_xface->lte_frame_parms->frame_type,
     mac_xface->lte_frame_parms->tdd_config);
   */
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  if (eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sizeof_SIB1 == 255) {
    mac_xface->macphy_exit("[RRC][init_SI] FATAL, eNB_rrc_inst[enb_mod_idP].carrier[CC_id].sizeof_SIB1 == 255");
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  }
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  eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].SIB23 = (uint8_t*) malloc16(64);
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  if (eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].SIB23) {
    eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sizeof_SIB23 = do_SIB23(
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          ctxt_pP->module_id,
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          CC_id,
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          mac_xface->lte_frame_parms,
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          eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].SIB23,
          &eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].systemInformation,
          &eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2,
          &eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib3
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#ifdef Rel10
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          , &eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib13,
          eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].MBMS_flag
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#endif
#if defined(ENABLE_ITTI)
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          , configuration
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#endif
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        );
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    /*
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       eNB_rrc_inst[ctxt_pP->module_id].sizeof_SIB23 = do_SIB2_AT4(ctxt_pP->module_id,
       eNB_rrc_inst[ctxt_pP->module_id].SIB23,
       &eNB_rrc_inst[ctxt_pP->module_id].systemInformation,
       &eNB_rrc_inst[ctxt_pP->module_id].sib2,
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       #if defined(ENABLE_ITTI)
       , configuration
       #endif
       );
     */
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    if (eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sizeof_SIB23 == 255) {
      mac_xface->macphy_exit("[RRC][init_SI] FATAL, eNB_rrc_inst[mod].carrier[CC_id].sizeof_SIB23 == 255");
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    }

    LOG_T(RRC, PROTOCOL_RRC_CTXT_FMT" SIB2/3 Contents (partial)\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP));
    LOG_T(RRC, PROTOCOL_RRC_CTXT_FMT" pusch_config_common.n_SB = %ld\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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          eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->radioResourceConfigCommon.pusch_ConfigCommon.
          pusch_ConfigBasic.n_SB);
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    LOG_T(RRC, PROTOCOL_RRC_CTXT_FMT" pusch_config_common.hoppingMode = %ld\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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          eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->radioResourceConfigCommon.pusch_ConfigCommon.
          pusch_ConfigBasic.hoppingMode);
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    LOG_T(RRC, PROTOCOL_RRC_CTXT_FMT" pusch_config_common.pusch_HoppingOffset = %ld\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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          eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->radioResourceConfigCommon.pusch_ConfigCommon.
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          pusch_ConfigBasic.pusch_HoppingOffset);
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    LOG_T(RRC, PROTOCOL_RRC_CTXT_FMT" pusch_config_common.enable64QAM = %d\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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          (int)eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->radioResourceConfigCommon.pusch_ConfigCommon.
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          pusch_ConfigBasic.enable64QAM);
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    LOG_T(RRC, PROTOCOL_RRC_CTXT_FMT" pusch_config_common.groupHoppingEnabled = %d\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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          (int)eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->radioResourceConfigCommon.pusch_ConfigCommon.
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          ul_ReferenceSignalsPUSCH.groupHoppingEnabled);
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    LOG_T(RRC, PROTOCOL_RRC_CTXT_FMT" pusch_config_common.groupAssignmentPUSCH = %ld\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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          eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->radioResourceConfigCommon.pusch_ConfigCommon.
          ul_ReferenceSignalsPUSCH.groupAssignmentPUSCH);
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    LOG_T(RRC, PROTOCOL_RRC_CTXT_FMT" pusch_config_common.sequenceHoppingEnabled = %d\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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          (int)eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->radioResourceConfigCommon.pusch_ConfigCommon.
          ul_ReferenceSignalsPUSCH.sequenceHoppingEnabled);
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    LOG_T(RRC, PROTOCOL_RRC_CTXT_FMT" pusch_config_common.cyclicShift  = %ld\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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          eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->radioResourceConfigCommon.pusch_ConfigCommon.
          ul_ReferenceSignalsPUSCH.cyclicShift);
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#ifdef Rel10
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    if (eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].MBMS_flag > 0) {
      for (i = 0; i < eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->mbsfn_SubframeConfigList->list.count; i++) {
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        // SIB 2
        //   LOG_D(RRC, "[eNB %d] mbsfn_SubframeConfigList.list.count = %ld\n", enb_mod_idP, eNB_rrc_inst[enb_mod_idP].sib2->mbsfn_SubframeConfigList->list.count);
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        LOG_D(RRC, PROTOCOL_RRC_CTXT_FMT" SIB13 contents for MBSFN subframe allocation %d/%d(partial)\n",
              PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
              i,
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              eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->mbsfn_SubframeConfigList->list.count);
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        LOG_D(RRC, PROTOCOL_RRC_CTXT_FMT" mbsfn_Subframe_pattern is  = %x\n",
              PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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              eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->mbsfn_SubframeConfigList->list.array[i]->subframeAllocation.choice.oneFrame.buf[0] >> 0);
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        LOG_D(RRC, PROTOCOL_RRC_CTXT_FMT" radioframe_allocation_period  = %ld (just index number, not the real value)\n",
              PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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              eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->mbsfn_SubframeConfigList->list.array[i]->radioframeAllocationPeriod);   // need to display the real value, using array of char (like in dumping SIB2)
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        LOG_D(RRC, PROTOCOL_RRC_CTXT_FMT" radioframe_allocation_offset  = %ld\n",
              PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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              eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->mbsfn_SubframeConfigList->list.array[i]->radioframeAllocationOffset);
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      }

      //   SIB13
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      for (i = 0; i < eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib13->mbsfn_AreaInfoList_r9.list.count; i++) {
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        LOG_D(RRC, PROTOCOL_RRC_CTXT_FMT" SIB13 contents for MBSFN sync area %d/2 (partial)\n",
              PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
              i,
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              eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib13->mbsfn_AreaInfoList_r9.list.count);
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        LOG_D(RRC, PROTOCOL_RRC_CTXT_FMT" MCCH Repetition Period: %d (just index number, not real value)\n",
              PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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              eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib13->mbsfn_AreaInfoList_r9.list.array[i]->mcch_Config_r9.mcch_RepetitionPeriod_r9);
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        LOG_D(RRC, PROTOCOL_RRC_CTXT_FMT" MCCH Offset: %d\n",
              PROTOCOL_RRC_CTXT_ARGS(ctxt_pP),
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              eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib13->mbsfn_AreaInfoList_r9.list.array[i]->mcch_Config_r9.mcch_Offset_r9);
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      }
    }

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#endif

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    LOG_D(RRC,
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          PROTOCOL_RRC_CTXT_FMT" RRC_UE --- MAC_CONFIG_REQ (SIB1.tdd & SIB2 params) ---> MAC_UE\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP));
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    rrc_mac_config_req(ctxt_pP->module_id, CC_id, ENB_FLAG_YES, 0, 0,
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                       (RadioResourceConfigCommonSIB_t *) &
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                       eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->radioResourceConfigCommon,
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                       (struct PhysicalConfigDedicated *)NULL,
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#ifdef Rel10
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                       (SCellToAddMod_r10_t *)NULL,
                       //(struct PhysicalConfigDedicatedSCell_r10 *)NULL,
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#endif
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                       (MeasObjectToAddMod_t **) NULL,
                       (MAC_MainConfig_t *) NULL, 0,
                       (struct LogicalChannelConfig *)NULL,
                       (MeasGapConfig_t *) NULL,
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                       eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib1->tdd_Config,
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                       NULL,
                       &SIwindowsize, &SIperiod,
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                       eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->freqInfo.ul_CarrierFreq,
                       eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->freqInfo.ul_Bandwidth,
                       &eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->freqInfo.additionalSpectrumEmission,
                       (MBSFN_SubframeConfigList_t*) eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib2->mbsfn_SubframeConfigList
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#ifdef Rel10
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                       ,
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                       eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].MBMS_flag,
                       (MBSFN_AreaInfoList_r9_t*) & eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].sib13->mbsfn_AreaInfoList_r9,
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                       (PMCH_InfoList_r9_t *) NULL
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#endif
#ifdef CBA
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                       , 0, //eNB_rrc_inst[ctxt_pP->module_id].num_active_cba_groups,
                       0    //eNB_rrc_inst[ctxt_pP->module_id].cba_rnti[0]
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#endif
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                      );
  } else {
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    LOG_E(RRC, PROTOCOL_RRC_CTXT_FMT" init_SI: FATAL, no memory for SIB2/3 allocated\n",
          PROTOCOL_RRC_CTXT_ARGS(ctxt_pP));
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    mac_xface->macphy_exit("[RRC][init_SI] FATAL, no memory for SIB2/3 allocated");
  }
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}

#ifdef Rel10
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/*------------------------------------------------------------------------------*/
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static void
init_MCCH(
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  module_id_t enb_mod_idP,
  int CC_id
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)
//-----------------------------------------------------------------------------
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{
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  int                                 sync_area = 0;
  // initialize RRC_eNB_INST MCCH entry
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  eNB_rrc_inst[enb_mod_idP].carrier[CC_id].MCCH_MESSAGE =
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    malloc(eNB_rrc_inst[enb_mod_idP].carrier[CC_id].num_mbsfn_sync_area * sizeof(uint8_t*));
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  for (sync_area = 0; sync_area < eNB_rrc_inst[enb_mod_idP].carrier[CC_id].num_mbsfn_sync_area; sync_area++) {
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    eNB_rrc_inst[enb_mod_idP].carrier[CC_id].sizeof_MCCH_MESSAGE[sync_area] = 0;
    eNB_rrc_inst[enb_mod_idP].carrier[CC_id].MCCH_MESSAGE[sync_area] = (uint8_t *) malloc16(32);
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    if (eNB_rrc_inst[enb_mod_idP].carrier[CC_id].MCCH_MESSAGE[sync_area] == NULL) {
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      LOG_E(RRC, "[eNB %d][MAIN] init_MCCH: FATAL, no memory for MCCH MESSAGE allocated \n", enb_mod_idP);
      mac_xface->macphy_exit("[RRC][init_MCCH] not enough memory\n");
    } else {
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      eNB_rrc_inst[enb_mod_idP].carrier[CC_id].sizeof_MCCH_MESSAGE[sync_area] = do_MBSFNAreaConfig(enb_mod_idP,
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          mac_xface->lte_frame_parms,
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          sync_area,
          (uint8_t *)eNB_rrc_inst[enb_mod_idP].carrier[CC_id].MCCH_MESSAGE[sync_area],
          &eNB_rrc_inst[enb_mod_idP].carrier[CC_id].mcch,
          &eNB_rrc_inst[enb_mod_idP].carrier[CC_id].mcch_message);

      LOG_I(RRC, "mcch message pointer %p for sync area %d \n",
            eNB_rrc_inst[enb_mod_idP].carrier[CC_id].MCCH_MESSAGE[sync_area],
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            sync_area);
      LOG_D(RRC, "[eNB %d] MCCH_MESSAGE  contents for Sync Area %d (partial)\n", enb_mod_idP, sync_area);
      LOG_D(RRC, "[eNB %d] CommonSF_AllocPeriod_r9 %d\n", enb_mod_idP,
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            eNB_rrc_inst[enb_mod_idP].carrier[CC_id].mcch_message->commonSF_AllocPeriod_r9);
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      LOG_D(RRC,
            "[eNB %d] CommonSF_Alloc_r9.list.count (number of MBSFN Subframe Pattern) %d\n",
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            enb_mod_idP, eNB_rrc_inst[enb_mod_idP].carrier[CC_id].mcch_message->commonSF_Alloc_r9.list.count);
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      LOG_D(RRC, "[eNB %d] MBSFN Subframe Pattern: %02x (in hex)\n",
            enb_mod_idP,
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            eNB_rrc_inst[enb_mod_idP].carrier[CC_id].mcch_message->commonSF_Alloc_r9.list.array[0]->subframeAllocation.
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            choice.oneFrame.buf[0]);

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      if (eNB_rrc_inst[enb_mod_idP].carrier[CC_id].sizeof_MCCH_MESSAGE[sync_area] == 255) {
        mac_xface->macphy_exit("[RRC][init_MCCH] eNB_rrc_inst[enb_mod_idP].carrier[CC_id].sizeof_MCCH_MESSAGE[sync_area] == 255");
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      } else {
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        eNB_rrc_inst[enb_mod_idP].carrier[CC_id].MCCH_MESS[sync_area].Active = 1;
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      }
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    }
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  }
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  //Set the eNB_rrc_inst[enb_mod_idP].MCCH_MESS.Active to 1 (allow to  transfer MCCH message RRC->MAC in function mac_rrc_data_req)
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  // ??Configure MCCH logical channel
  // call mac_config_req with appropriate structure from ASN.1 description

  //  LOG_I(RRC, "DUY: serviceID is %d\n",eNB_rrc_inst[enb_mod_idP].mcch_message->pmch_InfoList_r9.list.array[0]->mbms_SessionInfoList_r9.list.array[0]->tmgi_r9.serviceId_r9.buf[2]);
  //  LOG_I(RRC, "DUY: session ID is %d\n",eNB_rrc_inst[enb_mod_idP].mcch_message->pmch_InfoList_r9.list.array[0]->mbms_SessionInfoList_r9.list.array[0]->sessionId_r9->buf[0]);
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  rrc_mac_config_req(enb_mod_idP, CC_id, ENB_FLAG_YES, 0, 0,
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                     (RadioResourceConfigCommonSIB_t *) NULL,
                     (struct PhysicalConfigDedicated *)NULL,
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#ifdef Rel10
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                     (SCellToAddMod_r10_t *)NULL,
                     //(struct PhysicalConfigDedicatedSCell_r10 *)NULL,
#endif
                     (MeasObjectToAddMod_t **) NULL,
                     (MAC_MainConfig_t *) NULL,
                     0,
                     (struct LogicalChannelConfig *)NULL,
                     (MeasGapConfig_t *) NULL,
                     (TDD_Config_t *) NULL,
                     NULL, (uint8_t *) NULL, (uint16_t *) NULL, NULL, NULL, NULL, (MBSFN_SubframeConfigList_t *) NULL
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#   ifdef Rel10
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                     ,
                     0,
                     (MBSFN_AreaInfoList_r9_t *) NULL,
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                     (PMCH_InfoList_r9_t *) & (eNB_rrc_inst[enb_mod_idP].carrier[CC_id].mcch_message->pmch_InfoList_r9)
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#   endif
#   ifdef CBA
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                     , 0, 0
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#   endif
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                    );
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  //LOG_I(RRC,"DUY: lcid after rrc_mac_config_req is %02d\n",eNB_rrc_inst[enb_mod_idP].mcch_message->pmch_InfoList_r9.list.array[0]->mbms_SessionInfoList_r9.list.array[0]->logicalChannelIdentity_r9);
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}

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//-----------------------------------------------------------------------------
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static void init_MBMS(
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  module_id_t enb_mod_idP,
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  int         CC_id,
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  frame_t frameP
)
//-----------------------------------------------------------------------------
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{
  // init the configuration for MTCH
  protocol_ctxt_t               ctxt;
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  if (eNB_rrc_inst[enb_mod_idP].carrier[CC_id].MBMS_flag > 0) {
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    PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, enb_mod_idP, ENB_FLAG_YES, NOT_A_RNTI, frameP, 0,enb_mod_idP);
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    LOG_D(RRC, "[eNB %d] Frame %d : Radio Bearer config request for MBMS\n", enb_mod_idP, frameP);   //check the lcid
    // Configuring PDCP and RLC for MBMS Radio Bearer
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    rrc_pdcp_config_asn1_req(&ctxt,
                             (SRB_ToAddModList_t  *)NULL,  // SRB_ToAddModList
                             (DRB_ToAddModList_t  *)NULL,  // DRB_ToAddModList
                             (DRB_ToReleaseList_t *)NULL,
                             0,     // security mode
                             NULL,  // key rrc encryption
                             NULL,  // key rrc integrity
                             NULL   // key encryption
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#   ifdef Rel10
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                             , &(eNB_rrc_inst[enb_mod_idP].carrier[CC_id].mcch_message->pmch_InfoList_r9)
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#   endif
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                            );
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    rrc_rlc_config_asn1_req(&ctxt,
                            NULL, // SRB_ToAddModList
                            NULL,   // DRB_ToAddModList
                            NULL,   // DRB_ToReleaseList
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                            &(eNB_rrc_inst[enb_mod_idP].carrier[CC_id].mcch_message->pmch_InfoList_r9));
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    //rrc_mac_config_req();
  }
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}
#endif

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//-----------------------------------------------------------------------------
uint8_t
rrc_eNB_get_next_transaction_identifier(
  module_id_t enb_mod_idP
)
//-----------------------------------------------------------------------------
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{
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  static uint8_t                      rrc_transaction_identifier[NUMBER_OF_eNB_MAX];
  rrc_transaction_identifier[enb_mod_idP] = (rrc_transaction_identifier[enb_mod_idP] + 1) % RRC_TRANSACTION_IDENTIFIER_NUMBER;
  return rrc_transaction_identifier[enb_mod_idP];
}
/*------------------------------------------------------------------------------*/
/* Functions to handle UE index in eNB UE list */

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////-----------------------------------------------------------------------------
//static module_id_t
//rrc_eNB_get_UE_index(
//                module_id_t enb_mod_idP,
//                uint64_t    UE_identity
//)
////-----------------------------------------------------------------------------
//{
//
//    boolean_t      reg = FALSE;
//    module_id_t    i;
//
//    AssertFatal(enb_mod_idP < NB_eNB_INST, "eNB index invalid (%d/%d)!", enb_mod_idP, NB_eNB_INST);
//
//    for (i = 0; i < NUMBER_OF_UE_MAX; i++) {
//        if (eNB_rrc_inst[enb_mod_idP].Info.UE_list[i] == UE_identity) {
//            // UE_identity already registered
//            reg = TRUE;
//            break;
//        }
//    }
//
//    if (reg == FALSE) {
//        return (UE_MODULE_INVALID);
//    } else
//        return (i);
//}


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//-----------------------------------------------------------------------------
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// return the ue context if there is already an UE with ue_identityP, NULL otherwise
static struct rrc_eNB_ue_context_s*
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rrc_eNB_ue_context_random_exist(
  const protocol_ctxt_t* const ctxt_pP,
  const uint64_t               ue_identityP
)
//-----------------------------------------------------------------------------
{
  struct rrc_eNB_ue_context_s*        ue_context_p = NULL;
  RB_FOREACH(ue_context_p, rrc_ue_tree_s, &(eNB_rrc_inst[ctxt_pP->module_id].rrc_ue_head)) {
    if (ue_context_p->ue_context.random_ue_identity == ue_identityP)
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      return ue_context_p;
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  }
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  return NULL;
}
//-----------------------------------------------------------------------------
// return the ue context if there is already an UE with the same S-TMSI(MMEC+M-TMSI), NULL otherwise
static struct rrc_eNB_ue_context_s*
rrc_eNB_ue_context_stmsi_exist(
  const protocol_ctxt_t* const ctxt_pP,
  const mme_code_t             mme_codeP,
  const m_tmsi_t               m_tmsiP
)
//-----------------------------------------------------------------------------
{
  struct rrc_eNB_ue_context_s*        ue_context_p = NULL;
  RB_FOREACH(ue_context_p, rrc_ue_tree_s, &(eNB_rrc_inst[ctxt_pP->module_id].rrc_ue_head)) {
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    LOG_I(RRC,"checking for UE S-TMSI %x, mme %x (%p): rnti %x",
	  m_tmsiP, mme_codeP, ue_context_p, 
	  ue_context_p->ue_context.rnti);
    if (ue_context_p->ue_context.Initialue_identity_s_TMSI.presence == TRUE) {
      printf("S-TMSI %x, MME %x\n",
	    ue_context_p->ue_context.Initialue_identity_s_TMSI.m_tmsi,
	    ue_context_p->ue_context.Initialue_identity_s_TMSI.mme_code);
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      if (ue_context_p->ue_context.Initialue_identity_s_TMSI.m_tmsi == m_tmsiP)
        if (ue_context_p->ue_context.Initialue_identity_s_TMSI.mme_code == mme_codeP)
          return ue_context_p;
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    }
    else
      printf("\n");

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  }
  return NULL;
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}

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//-----------------------------------------------------------------------------
// return a new ue context structure if ue_identityP, ctxt_pP->rnti not found in collection
static struct rrc_eNB_ue_context_s*
rrc_eNB_get_next_free_ue_context(
  const protocol_ctxt_t* const ctxt_pP,
  const uint64_t               ue_identityP
)
//-----------------------------------------------------------------------------
{
  struct rrc_eNB_ue_context_s*        ue_context_p = NULL;
  ue_context_p = rrc_eNB_get_ue_context(
                   &eNB_rrc_inst[ctxt_pP->module_id],
                   ctxt_pP->rnti);

  if (ue_context_p == NULL) {
    RB_FOREACH(ue_context_p, rrc_ue_tree_s, &(eNB_rrc_inst[ctxt_pP->module_id].rrc_ue_head)) {
      if (ue_context_p->ue_context.random_ue_identity == ue_identityP) {
        LOG_D(RRC,
              PROTOCOL_RRC_CTXT_UE_FMT" Cannot create new UE context, already exist rand UE id 0x%x, uid %u\n",
              PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
              ue_identityP,
              ue_context_p->local_uid);
        return NULL;
      }
    }
    ue_context_p = rrc_eNB_allocate_new_UE_context(&eNB_rrc_inst[ctxt_pP->module_id]);
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    if (ue_context_p == NULL) {
      LOG_E(RRC,
            PROTOCOL_RRC_CTXT_UE_FMT" Cannot create new UE context, no memory\n",
            PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP));
      return NULL;
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    }
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    ue_context_p->ue_id_rnti                    = ctxt_pP->rnti; // here ue_id_rnti is just a key, may be something else
    ue_context_p->ue_context.rnti               = ctxt_pP->rnti; // yes duplicate, 1 may be removed
    ue_context_p->ue_context.random_ue_identity = ue_identityP;
    RB_INSERT(rrc_ue_tree_s, &eNB_rrc_inst[ctxt_pP->module_id].rrc_ue_head, ue_context_p);
    LOG_D(RRC,
          PROTOCOL_RRC_CTXT_UE_FMT" Created new UE context uid %u\n",
          PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
          ue_context_p->local_uid);
    return ue_context_p;
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  } else {
    LOG_E(RRC,
          PROTOCOL_RRC_CTXT_UE_FMT" Cannot create new UE context, already exist\n",
          PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP));
    return NULL;
  }
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}

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#if !defined(ENABLE_USE_MME)
void rrc_eNB_emulation_notify_ue_module_id(
  const module_id_t ue_module_idP,
  const rnti_t      rntiP,
  const uint8_t     cell_identity_byte0P,
  const uint8_t     cell_identity_byte1P,
  const uint8_t     cell_identity_byte2P,
  const uint8_t     cell_identity_byte3P)
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{
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  module_id_t                         enb_module_id;
  struct rrc_eNB_ue_context_s*        ue_context_p = NULL;
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  int                                 CC_id;
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  // find enb_module_id
  for (enb_module_id = 0; enb_module_id < NUMBER_OF_eNB_MAX; enb_module_id++) {
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    for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
      if (eNB_rrc_inst[enb_module_id].carrier[CC_id].sib1 != NULL) {
        if (
          (eNB_rrc_inst[enb_module_id].carrier[CC_id].sib1->cellAccessRelatedInfo.cellIdentity.buf[0] == cell_identity_byte0P) &&
          (eNB_rrc_inst[enb_module_id].carrier[CC_id].sib1->cellAccessRelatedInfo.cellIdentity.buf[1] == cell_identity_byte1P) &&
          (eNB_rrc_inst[enb_module_id].carrier[CC_id].sib1->cellAccessRelatedInfo.cellIdentity.buf[2] == cell_identity_byte2P) &&
          (eNB_rrc_inst[enb_module_id].carrier[CC_id].sib1->cellAccessRelatedInfo.cellIdentity.buf[3] == cell_identity_byte3P)
        ) {
          oai_emulation.info.eNB_ue_module_id_to_rnti[enb_module_id][ue_module_idP] = rntiP;
          ue_context_p = rrc_eNB_get_ue_context(
                           &eNB_rrc_inst[enb_module_id],
                           rntiP
                         );

          if (NULL != ue_context_p) {
            oai_emulation.info.eNB_ue_local_uid_to_ue_module_id[enb_module_id][ue_context_p->local_uid] = ue_module_idP;
          }
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          return;
        }
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      }
    }
  }
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  AssertFatal(enb_module_id == NUMBER_OF_eNB_MAX,
              "Cell identity not found for ue module id %u rnti %x",
              ue_module_idP, rntiP);
}
#endif
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//-----------------------------------------------------------------------------
void
rrc_eNB_free_mem_UE_context(
  const protocol_ctxt_t*               const ctxt_pP,
  struct rrc_eNB_ue_context_s*         const ue_context_pP
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)
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//-----------------------------------------------------------------------------
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{
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  int i;
  LOG_T(RRC,
        PROTOCOL_RRC_CTXT_UE_FMT" Clearing UE context 0x%x (free internal structs)\n",
        PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
        ue_context_pP);
#ifdef Rel10
  ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_SCellToAddMod_r10, &ue_context_pP->ue_context.sCell_config[0]);
  ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_SCellToAddMod_r10, &ue_context_pP->ue_context.sCell_config[1]);
#endif

  if (ue_context_pP->ue_context.SRB_configList) {
    ASN_STRUCT_FREE(asn_DEF_SRB_ToAddModList, ue_context_pP->ue_context.SRB_configList);
    ue_context_pP->ue_context.SRB_configList = NULL;
  }
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  if (ue_context_pP->ue_context.DRB_configList) {
    ASN_STRUCT_FREE(asn_DEF_DRB_ToAddModList, ue_context_pP->ue_context.DRB_configList);
    ue_context_pP->ue_context.DRB_configList = NULL;
  }
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  memset(ue_context_pP->ue_context.DRB_active, 0, sizeof(ue_context_pP->ue_context.DRB_active));
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  if (ue_context_pP->ue_context.physicalConfigDedicated) {
    ASN_STRUCT_FREE(asn_DEF_PhysicalConfigDedicated, ue_context_pP->ue_context.physicalConfigDedicated);
    ue_context_pP->ue_context.physicalConfigDedicated = NULL;
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  }

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  if (ue_context_pP->ue_context.sps_Config) {
    ASN_STRUCT_FREE(asn_DEF_SPS_Config, ue_context_pP->ue_context.sps_Config);
    ue_context_pP->ue_context.sps_Config = NULL;
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  }

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  for (i=0; i < MAX_MEAS_OBJ; i++) {
    if (ue_context_pP->ue_context.MeasObj[i] != NULL) {
      ASN_STRUCT_FREE(asn_DEF_MeasObjectToAddMod, ue_context_pP->ue_context.MeasObj[i]);
      ue_context_pP->ue_context.MeasObj[i] = NULL;
    }
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  }
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  for (i=0; i < MAX_MEAS_CONFIG; i++) {
    if (ue_context_pP->ue_context.ReportConfig[i] != NULL) {
      ASN_STRUCT_FREE(asn_DEF_ReportConfigToAddMod, ue_context_pP->ue_context.ReportConfig[i]);
      ue_context_pP->ue_context.ReportConfig[i] = NULL;
    }
  }
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  if (ue_context_pP->ue_context.QuantityConfig) {
    ASN_STRUCT_FREE(asn_DEF_QuantityConfig, ue_context_pP->ue_context.QuantityConfig);
    ue_context_pP->ue_context.QuantityConfig = NULL;
  }
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  if (ue_context_pP->ue_context.mac_MainConfig) {
    ASN_STRUCT_FREE(asn_DEF_MAC_MainConfig, ue_context_pP->ue_context.mac_MainConfig);
    ue_context_pP->ue_context.mac_MainConfig = NULL;
  }
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  if (ue_context_pP->ue_context.measGapConfig) {
    ASN_STRUCT_FREE(asn_DEF_MeasGapConfig, ue_context_pP->ue_context.measGapConfig);
    ue_context_pP->ue_context.measGapConfig = NULL;
  }
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  //SRB_INFO                           SI;
  //SRB_INFO                           Srb0;
  //SRB_INFO_TABLE_ENTRY               Srb1;
  //SRB_INFO_TABLE_ENTRY               Srb2;
  if (ue_context_pP->ue_context.measConfig) {
    ASN_STRUCT_FREE(asn_DEF_MeasConfig, ue_context_pP->ue_context.measConfig);
    ue_context_pP->ue_context.measConfig = NULL;
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  }
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  if (ue_context_pP->ue_context.measConfig) {
    ASN_STRUCT_FREE(asn_DEF_MeasConfig, ue_context_pP->ue_context.measConfig);
    ue_context_pP->ue_context.measConfig = NULL;
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  }
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  //HANDOVER_INFO                     *handover_info;
#if defined(ENABLE_SECURITY)
  //uint8_t kenb[32];
#endif
  //e_SecurityAlgorithmConfig__cipheringAlgorithm     ciphering_algorithm;
  //e_SecurityAlgorithmConfig__integrityProtAlgorithm integrity_algorithm;
  //uint8_t                            Status;
  //rnti_t                             rnti;
  //uint64_t                           random_ue_identity;
#if defined(ENABLE_ITTI)
  //UE_S_TMSI                          Initialue_identity_s_TMSI;
  //EstablishmentCause_t               establishment_cause;
  //ReestablishmentCause_t             reestablishment_cause;
  //uint16_t                           ue_initial_id;
  //uint32_t                           eNB_ue_s1ap_id :24;
  //security_capabilities_t            security_capabilities;
  //uint8_t                            nb_of_e_rabs;
  //e_rab_param_t                      e_rab[S1AP_MAX_E_RAB];
  //uint32_t                           enb_gtp_teid[S1AP_MAX_E_RAB];
  //transport_layer_addr_t             enb_gtp_addrs[S1AP_MAX_E_RAB];
  //rb_id_t                            enb_gtp_ebi[S1AP_MAX_E_RAB];
#endif
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}

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//-----------------------------------------------------------------------------
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// should be called when UE is lost by eNB
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void
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rrc_eNB_free_UE(
  const module_id_t enb_mod_idP,
  const rnti_t      rntiP,
  const frame_t     frameP,
  const sub_frame_t subframeP
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)
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//-----------------------------------------------------------------------------
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{
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  struct rrc_eNB_ue_context_s*        ue_context_p = NULL;
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  protocol_ctxt_t                     ctxt;
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#if !defined(ENABLE_USE_MME)
  module_id_t                         ue_module_id;
#endif
  AssertFatal(enb_mod_idP < NB_eNB_INST, "eNB inst invalid (%d/%d) for UE %x!", enb_mod_idP, NB_eNB_INST, rntiP);
  ue_context_p = rrc_eNB_get_ue_context(
                   &eNB_rrc_inst[enb_mod_idP],
                   rntiP
                 );
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  if (NULL != ue_context_p) {
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    PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, enb_mod_idP, ENB_FLAG_YES, rntiP, frameP, subframeP,enb_mod_idP);
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    LOG_W(RRC, "[eNB %d] Removing UE RNTI %x\n", enb_mod_idP, rntiP);
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#if defined(ENABLE_USE_MME)
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    rrc_eNB_send_S1AP_UE_CONTEXT_RELEASE_REQ(enb_mod_idP, ue_context_p, S1AP_CAUSE_RADIO_NETWORK, 21); // send cause 21: connection with ue lost
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    /* From 3GPP 36300v10 p129 : 19.2.2.2.2 S1 UE Context Release Request (eNB triggered)
     * If the E-UTRAN internal reason is a radio link failure detected in the eNB, the eNB shall wait a sufficient time before
     *  triggering the S1 UE Context Release Request procedure
     *  in order to allow the UE to perform the NAS recovery
     *  procedure, see TS 23.401 [17].
     */
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#else
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#if defined(OAI_EMU)
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    AssertFatal(ue_context_p->local_uid < NUMBER_OF_UE_MAX, "local_uid invalid (%d<%d) for UE %x!", ue_context_p->local_uid, NUMBER_OF_UE_MAX, rntiP);
    ue_module_id = oai_emulation.info.eNB_ue_local_uid_to_ue_module_id[enb_mod_idP][ue_context_p->local_uid];
    AssertFatal(ue_module_id < NUMBER_OF_UE_MAX, "ue_module_id invalid (%d<%d) for UE %x!", ue_module_id, NUMBER_OF_UE_MAX, rntiP);
    oai_emulation.info.eNB_ue_local_uid_to_ue_module_id[enb_mod_idP][ue_context_p->local_uid] = -1;
    oai_emulation.info.eNB_ue_module_id_to_rnti[enb_mod_idP][ue_module_id] = NOT_A_RNTI;
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#endif
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#endif
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    ue_context_p->ue_context.Status = RRC_IDLE;
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    rrc_mac_remove_ue(enb_mod_idP,rntiP);
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    rrc_rlc_remove_ue(&ctxt);
    pdcp_remove_UE(&ctxt);
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    rrc_eNB_remove_ue_context(
      &ctxt,
      &eNB_rrc_inst[enb_mod_idP],
      ue_context_p);
  }
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}

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//-----------------------------------------------------------------------------
void
rrc_eNB_process_RRCConnectionSetupComplete(
  const protocol_ctxt_t* const ctxt_pP,
  rrc_eNB_ue_context_t*          const ue_context_pP,
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  RRCConnectionSetupComplete_r8_IEs_t * rrcConnectionSetupComplete
)
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//-----------------------------------------------------------------------------
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{
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  LOG_I(RRC,
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        PROTOCOL_RRC_CTXT_UE_FMT" [RAPROC] Logical Channel UL-DCCH, " "processing RRCConnectionSetupComplete from UE\n",
        PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP));
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#if defined(ENABLE_USE_MME)
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  if (EPC_MODE_ENABLED == 1) {
    // Forward message to S1AP layer
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    rrc_eNB_send_S1AP_NAS_FIRST_REQ(
      ctxt_pP,
      ue_context_pP,
      rrcConnectionSetupComplete);
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  } else
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#endif
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  {
    // RRC loop back (no S1AP), send SecurityModeCommand to UE
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    rrc_eNB_generate_SecurityModeCommand(
      ctxt_pP,
      ue_context_pP);
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    // rrc_eNB_generate_UECapabilityEnquiry(enb_mod_idP,frameP,ue_mod_idP);
  }
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}

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//-----------------------------------------------------------------------------
void
rrc_eNB_generate_SecurityModeCommand(
  const protocol_ctxt_t* const ctxt_pP,
  rrc_eNB_ue_context_t*          const ue_context_pP
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)
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//-----------------------------------------------------------------------------
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{
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  uint8_t                             buffer[100];
  uint8_t                             size;
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  size = do_SecurityModeCommand(
           ctxt_pP,
           buffer,
           rrc_eNB_get_next_transaction_identifier(ctxt_pP->module_id),
           ue_context_pP->ue_context.ciphering_algorithm,
           ue_context_pP->ue_context.integrity_algorithm);
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#ifdef RRC_MSG_PRINT
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  uint16_t i=0;
  LOG_F(RRC,"[MSG] RRC Security Mode Command\n");

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  for (i = 0; i < size; i++) {
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    LOG_F(RRC,"%02x ", ((uint8_t*)buffer)[i]);
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  }
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  LOG_F(RRC,"\n");
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#endif

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  LOG_I(RRC,
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        PROTOCOL_RRC_CTXT_UE_FMT" Logical Channel DL-DCCH, Generate SecurityModeCommand (bytes %d)\n",
        PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
        size);
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