eNB_scheduler_RA.c

/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

/*! \file eNB_scheduler_RA.c
 * \brief primitives used for random access
 * \author  Navid Nikaein and Raymond Knopp
 * \date 2010 - 2014
 * \email: navid.nikaein@eurecom.fr
 * \version 1.0
 * @ingroup _mac

 */

/* indented with: indent -kr eNB_scheduler_RA.c */


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

#include "LAYER2/MAC/mac.h"
#include "LAYER2/MAC/mac_extern.h"

#include "LAYER2/MAC/mac_proto.h"
#include "common/utils/LOG/log.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "PHY/LTE_TRANSPORT/transport_common_proto.h"

#include "RRC/LTE/rrc_extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"

#include "SCHED/sched_common.h"
//#include "LAYER2/MAC/pre_processor.c"
#include "pdcp.h"

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

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

#include "T.h"

#include "common/ran_context.h"
#include "LAYER2/MAC/eNB_scheduler_fairRR.h"

extern RAN_CONTEXT_t RC;

extern uint8_t nfapi_mode;
extern int oai_nfapi_hi_dci0_req(nfapi_hi_dci0_request_t *hi_dci0_req);

void add_subframe(uint16_t *frameP, uint16_t *subframeP, int offset)
{
    *frameP    = (*frameP + ((*subframeP + offset) / 10)) % 1024;

    *subframeP = ((*subframeP + offset) % 10);
}

uint16_t sfnsf_add_subframe(uint16_t frameP, uint16_t subframeP, int offset)
{
  add_subframe(&frameP, &subframeP, offset);
  return frameP<<4|subframeP;
}

void subtract_subframe(uint16_t *frameP, uint16_t *subframeP, int offset)
{
  if (*subframeP < offset)
  {
    *frameP = (*frameP+1024-1)%1024;
  }
  *subframeP = (*subframeP+10-offset)%10;
}

uint16_t sfnsf_subtract_subframe(uint16_t frameP, uint16_t subframeP, int offset)
{
  subtract_subframe(&frameP, &subframeP, offset);
  return frameP<<4|subframeP;
}

void
add_msg3(module_id_t module_idP, int CC_id, RA_t * ra, frame_t frameP,
	 sub_frame_t subframeP)
{
    eNB_MAC_INST *mac = RC.mac[module_idP];
    COMMON_channels_t *cc = &mac->common_channels[CC_id];
    uint8_t j;
    nfapi_ul_config_request_t *ul_req;
    nfapi_ul_config_request_body_t *ul_req_body;
    nfapi_ul_config_request_pdu_t *ul_config_pdu;
    nfapi_hi_dci0_request_t        *hi_dci0_req;
    nfapi_hi_dci0_request_body_t   *hi_dci0_req_body;
    nfapi_hi_dci0_request_pdu_t    *hi_dci0_pdu;
    uint8_t sf_ahead_dl;
    uint8_t rvseq[4] = {0, 2, 3, 1};


    ul_req = &mac->UL_req_tmp[CC_id][ra->Msg3_subframe];
    ul_req_body = &ul_req->ul_config_request_body;
    AssertFatal(ra->state != IDLE, "RA is not active for RA %X\n",
		ra->rnti);

#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
  if (ra->rach_resource_type > 0) {
    LOG_I (MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d CE level %d is active, Msg3 in (%d,%d)\n",
           module_idP, frameP, subframeP, CC_id, ra->rach_resource_type - 1, ra->Msg3_frame, ra->Msg3_subframe);
    LOG_I (MAC, "Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d)\n",
           frameP, subframeP, ra->Msg3_frame, ra->Msg3_subframe, ra->msg3_nb_rb, ra->msg3_round);

    ul_config_pdu = &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus];

    memset ((void *) ul_config_pdu, 0, sizeof (nfapi_ul_config_request_pdu_t));
    ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_ULSCH_PDU_TYPE;
    ul_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_ul_config_ulsch_pdu));
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.handle = mac->ul_handle++;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti = ra->rnti;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start = narrowband_to_first_rb (cc, ra->msg34_narrowband) + ra->msg3_first_rb;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks = ra->msg3_nb_rb;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.modulation_type = 2;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.cyclic_shift_2_for_drms = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_enabled_flag = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_bits = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.new_data_indication = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.redundancy_version = rvseq[ra->msg3_round];
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.ul_tx_mode = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.current_tx_nb = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.n_srs = 1;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.size = get_TBS_UL (ra->msg3_mcs, ra->msg3_nb_rb);
    // Re13 fields
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.ue_type = ra->rach_resource_type > 2 ? 2 : 1;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.total_number_of_repetitions = 1;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.repetition_number = 1;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.initial_transmission_sf_io = (ra->Msg3_frame * 10) + ra->Msg3_subframe;
    ul_req_body->number_of_pdus++;
  }                             //  if (ra->rach_resource_type>0) {
  else
#endif
    {
	LOG_D(MAC,
	      "[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d RA is active, Msg3 in (%d,%d)\n",
	      module_idP, frameP, subframeP, CC_id, ra->Msg3_frame,
	      ra->Msg3_subframe);

	LOG_D(MAC,
	      "Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d,%d) for rnti: %d\n",
	      frameP, subframeP, ra->Msg3_frame, ra->Msg3_subframe,
	      ra->msg3_nb_rb, ra->msg3_first_rb, ra->msg3_round, ra->rnti);

	ul_config_pdu = &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus];

	memset((void *) ul_config_pdu, 0, sizeof(nfapi_ul_config_request_pdu_t));
	ul_config_pdu->pdu_type                                                = NFAPI_UL_CONFIG_ULSCH_PDU_TYPE;
	ul_config_pdu->pdu_size                                                = (uint8_t) (2 + sizeof(nfapi_ul_config_ulsch_pdu));
        ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.tl.tag                         = NFAPI_UL_CONFIG_REQUEST_ULSCH_PDU_REL8_TAG;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.handle                         = mac->ul_handle++;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti                           = ra->rnti;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start           = ra->msg3_first_rb;
	AssertFatal(ra->msg3_nb_rb > 0, "nb_rb = 0\n");
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks      = ra->msg3_nb_rb;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.modulation_type                = 2;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.cyclic_shift_2_for_drms        = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_enabled_flag = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_bits         = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.new_data_indication            = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.redundancy_version             = rvseq[ra->msg3_round];
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number            = subframe2harqpid(cc, ra->Msg3_frame, ra->Msg3_subframe);
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.ul_tx_mode                     = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.current_tx_nb                  = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.n_srs                          = 1;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.size                           = get_TBS_UL(10, ra->msg3_nb_rb);
	ul_req_body->number_of_pdus++;
        ul_req_body->tl.tag                                                    = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
        ul_req->sfn_sf                                                         = ra->Msg3_frame<<4|ra->Msg3_subframe;
        ul_req->header.message_id                                              = NFAPI_UL_CONFIG_REQUEST;
	// save UL scheduling information for preprocessor
	for (j = 0; j < ra->msg3_nb_rb; j++)
	    cc->vrb_map_UL[ra->msg3_first_rb + j] = 1;

        LOG_D(MAC, "MSG3: UL_CONFIG SFN/SF:%d number_of_pdus:%d ra->msg3_round:%d\n", NFAPI_SFNSF2DEC(ul_req->sfn_sf), ul_req_body->number_of_pdus, ra->msg3_round);

	if (ra->msg3_round != 0) {	// program HI too
	    sf_ahead_dl = ul_subframe2_k_phich(cc, subframeP);
	    hi_dci0_req = &mac->HI_DCI0_req[CC_id][(subframeP+sf_ahead_dl)%10];
	    hi_dci0_req_body = &hi_dci0_req->hi_dci0_request_body;
	    hi_dci0_pdu = &hi_dci0_req_body->hi_dci0_pdu_list[hi_dci0_req_body->number_of_dci + hi_dci0_req_body->number_of_hi];
	    memset((void *) hi_dci0_pdu, 0,
		   sizeof(nfapi_hi_dci0_request_pdu_t));
	    hi_dci0_pdu->pdu_type                                   = NFAPI_HI_DCI0_HI_PDU_TYPE;
	    hi_dci0_pdu->pdu_size                                   = 2 + sizeof(nfapi_hi_dci0_hi_pdu);
            hi_dci0_pdu->hi_pdu.hi_pdu_rel8.tl.tag                  = NFAPI_HI_DCI0_REQUEST_HI_PDU_REL8_TAG;
	    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.resource_block_start    = ra->msg3_first_rb;
	    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.cyclic_shift_2_for_drms = 0;
	    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.hi_value                = 0;
	    hi_dci0_req_body->number_of_hi++;

            hi_dci0_req_body->sfnsf                                 = sfnsf_add_subframe(ra->Msg3_frame, ra->Msg3_subframe, 0);
            hi_dci0_req_body->tl.tag                                = NFAPI_HI_DCI0_REQUEST_BODY_TAG;

            hi_dci0_req->sfn_sf                                     = sfnsf_add_subframe(frameP, subframeP, sf_ahead_dl);
            hi_dci0_req->header.message_id                          = NFAPI_HI_DCI0_REQUEST;

            if (nfapi_mode) {
              oai_nfapi_hi_dci0_req(hi_dci0_req);
              hi_dci0_req_body->number_of_hi=0;
            }

            LOG_D(MAC, "MSG3: HI_DCI0 SFN/SF:%d number_of_dci:%d number_of_hi:%d\n", NFAPI_SFNSF2DEC(hi_dci0_req->sfn_sf), hi_dci0_req_body->number_of_dci, hi_dci0_req_body->number_of_hi);

	    // save UL scheduling information for preprocessor
	    for (j = 0; j < ra->msg3_nb_rb; j++)
		cc->vrb_map_UL[ra->msg3_first_rb + j] = 1;

	    LOG_D(MAC,
		  "[eNB %d][PUSCH-RA %x] CC_id %d Frame %d subframeP %d Scheduled (PHICH) RA (mcs %d, first rb %d, nb_rb %d,round %d)\n",
		  module_idP, ra->rnti, CC_id, frameP, subframeP, 10, 1, 1,
		  ra->msg3_round - 1);
	}			//       if (ra->msg3_round != 0) { // program HI too
    }				// non-BL/CE UE case
}

void
generate_Msg2(module_id_t module_idP, int CC_idP, frame_t frameP,
	      sub_frame_t subframeP, RA_t * ra)
{


  eNB_MAC_INST *mac = RC.mac[module_idP];
  COMMON_channels_t *cc = mac->common_channels;

  uint8_t *vrb_map;
  int first_rb;
  int N_RB_DL;
  nfapi_dl_config_request_pdu_t *dl_config_pdu;
  nfapi_tx_request_pdu_t *TX_req;
  nfapi_dl_config_request_body_t *dl_req_body;

  vrb_map = cc[CC_idP].vrb_map;
  dl_req_body = &mac->DL_req[CC_idP].dl_config_request_body;
  dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
  N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);

#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
  int             rmax = 0;
  int             rep = 0;
  int             reps = 0;
  int             num_nb = 0;

  first_rb = 0;
  struct LTE_PRACH_ConfigSIB_v1310 *ext4_prach;
  LTE_PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
  LTE_PRACH_ParametersCE_r13_t *p[4] = { NULL, NULL, NULL, NULL };

  uint16_t        absSF = (10 * frameP) + subframeP;
  uint16_t        absSF_Msg2 = (10 * ra->Msg2_frame) + ra->Msg2_subframe;

  if (absSF > absSF_Msg2)
    return;                     // we're not ready yet, need to be to start ==

  if (cc[CC_idP].mib->message.schedulingInfoSIB1_BR_r13 > 0 &&
      cc[CC_idP].radioResourceConfigCommon_BR) {

    ext4_prach = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
    prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;

    switch (prach_ParametersListCE_r13->list.count) {
    case 4:
      p[3] = prach_ParametersListCE_r13->list.array[3];
    case 3:
      p[2] = prach_ParametersListCE_r13->list.array[2];
    case 2:
      p[1] = prach_ParametersListCE_r13->list.array[1];
    case 1:
      p[0] = prach_ParametersListCE_r13->list.array[0];
      break;
    default:
      AssertFatal (1 == 0, "Illegal count for prach_ParametersListCE_r13 %d\n", (int) prach_ParametersListCE_r13->list.count);
      break;

    }
  }

  if (ra->rach_resource_type > 0) {

    // This uses an MPDCCH Type 2 common allocation according to Section 9.1.5 36-213
    // Parameters:
    //    p=2+4 PRB set (number of PRB pairs 3)
    //    rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3
    //    if CELevel = 0,1 => Table 9.1.5-1b for MPDCCH candidates
    //    if CELevel = 2,3 => Table 9.1.5-2b for MPDCCH candidates
    //    distributed transmission

    // rmax from SIB2 information
    AssertFatal (rmax < 9, "rmax>8!\n");
    rmax = 1 << p[ra->rach_resource_type - 1]->mpdcch_NumRepetition_RA_r13;
    // choose r1 by default for RAR (Table 9.1.5-5)
    rep = 0;
    // get actual repetition count from Table 9.1.5-3
    reps = (rmax <= 8) ? (1 << rep) : (rmax >> (3 - rep));
    // get narrowband according to higher-layer config
    num_nb = p[ra->rach_resource_type - 1]->mpdcch_NarrowbandsToMonitor_r13.list.count;
    ra->msg2_narrowband = *p[ra->rach_resource_type - 1]->mpdcch_NarrowbandsToMonitor_r13.list.array[ra->preamble_index % num_nb]-1;
    first_rb = narrowband_to_first_rb (&cc[CC_idP], ra->msg2_narrowband);

    if ((ra->msg2_mpdcch_repetition_cnt == 0) && (mpdcch_sf_condition (mac, CC_idP, frameP, subframeP, rmax, TYPE2, -1) > 0)) {
      ra->msg2_mpdcch_done = 0;
      // MPDCCH configuration for RAR
      LOG_I (MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2 for CE Level %d, Programming MPDCCH %d repetitions\n", module_idP, frameP, subframeP, ra->rach_resource_type-1,reps);


      memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t));
      dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE;
      dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_mpdcch_pdu));
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format = (ra->rach_resource_type > 1) ? 11 : 10;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band = ra->msg2_narrowband;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_prb_pairs = 6;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment = 0; // Note: this can be dynamic
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_tansmission_type = 1;   // imposed (9.1.5 in 213) for Type 2 Common search space
      AssertFatal (cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 != NULL, "cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 is null\n");
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index = 0;        // Note: this should be dynamic
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level = 24;        // OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type = 2; // RA-RNTI
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = ra->RA_rnti;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode = (ra->rach_resource_type < 3) ? 1 : 2;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init = cc[CC_idP].physCellId;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.initial_transmission_sf_io = (frameP * 10) + subframeP;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power = 6000;     // 0dB
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding = getRIV (6, 0, 6) | (ra->msg2_narrowband<<5);
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs = 0;       // adjust according to size of RAR, 208 bits with N1A_PRB=3
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels = 0;    // fix to 4 for now
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_resource_offset = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_subframe_repetition_number = rep;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc = 1;       // N1A_PRB=3 (36.212) => 56 bits
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index_length = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.allocate_prach_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.frequency_hopping_enabled_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding = 0;        // this is not needed by OAI L1, but should be filled in
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_tx_antenna_ports = 1;
      ra->msg2_mpdcch_repetition_cnt++;
      dl_req_body->number_pdu++;
      ra->Msg2_subframe = (ra->Msg2_subframe + 9) % 10;

    }                           //repetition_count==0 && SF condition met
    if (ra->msg2_mpdcch_repetition_cnt > 0) {  // we're in a stream of repetitions


      if ((ra->msg2_mpdcch_repetition_cnt == reps)&&
	  (ra->msg2_mpdcch_done == 0)){    // this is the last mpdcch repetition
	ra->msg2_mpdcch_done = 1;
        if (cc[CC_idP].tdd_Config == NULL) {    // FDD case
          // wait 2 subframes for PDSCH transmission
          if (subframeP > 7)
            ra->Msg2_frame = (frameP + 1) & 1023;
          else
            ra->Msg2_frame = frameP;
          ra->Msg2_subframe = (subframeP + 2) % 10;    // +2 is the "n+x" from Section 7.1.11  in 36.213
          LOG_I(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, programmed Msg2 for %d.%d\n", module_idP, frameP, subframeP, ra->Msg2_frame,ra->Msg2_subframe);
        } else {
          AssertFatal (1 == 0, "TDD case not done yet\n");
        }
      }                         // mpdcch_repetition_count == reps
      else if (ra->msg2_mpdcch_done == 0) {
        LOG_I (MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, MPDCCH repetition %d\n", module_idP, frameP, subframeP, ra->msg2_mpdcch_repetition_cnt);
        ra->msg2_mpdcch_repetition_cnt++;
      }


      if ((ra->Msg2_frame == frameP) && (ra->Msg2_subframe == subframeP)) {
        // Program PDSCH
        LOG_I (MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming PDSCH\n", module_idP, frameP, subframeP);

        dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
        memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t));
        dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
        dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_dlsch_pdu));
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index = mac->pdu_index[CC_idP];
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->RA_rnti;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;     // localized
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV (N_RB_DL, first_rb, 6);
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2; //QPSK
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version = 0;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1;   // first block
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag = 0;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme = (cc[CC_idP].p_eNB == 1) ? 0 : 1;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers = 1;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands = 1;
        //      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index                         = ;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity = 1;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4; // 0 dB
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index = 0;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize (cc[CC_idP].mib->message.dl_Bandwidth); // ignored
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode = (cc[CC_idP].p_eNB == 1) ? 1 : 2;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband = 1;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1;
        //      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector                    = ;

        // Rel10 fields
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
        // Rel13 fields
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type = (ra->rach_resource_type < 3) ? 1 : 2;;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type = 2;        // not SI message
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.initial_transmission_sf_io = (10 * frameP) + subframeP;
        dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag = 0;
        dl_req_body->number_pdu++;

	fill_rar_br (mac, CC_idP, ra, frameP, subframeP, cc[CC_idP].RAR_pdu.payload, ra->rach_resource_type - 1)     ;
// Program UL processing for Msg3, same as regular LTE
        get_Msg3alloc (&cc[CC_idP], subframeP, frameP, &ra->Msg3_frame, &ra->Msg3_subframe);
        add_msg3 (module_idP, CC_idP, ra, frameP, subframeP);
	ra->state = WAITMSG3;
        // DL request
        LOG_I (MAC, "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming TX Req\n", module_idP, frameP, subframeP);
        mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
        TX_req = &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->TX_req[CC_idP].tx_request_body.number_of_pdus];
        TX_req->pdu_length = 7; // This should be changed if we have more than 1 preamble
        TX_req->pdu_index = mac->pdu_index[CC_idP]++;
        TX_req->num_segments = 1;
        TX_req->segments[0].segment_length = 7;
        TX_req->segments[0].segment_data = cc[CC_idP].RAR_pdu.payload;
        mac->TX_req[CC_idP].tx_request_body.number_of_pdus++;
      }
    }

  } else

#endif
    {

	if ((ra->Msg2_frame == frameP) && (ra->Msg2_subframe == subframeP)) {
	    LOG_D(MAC,
		  "[eNB %d] CC_id %d Frame %d, subframeP %d: Generating RAR DCI, state %d\n",
		  module_idP, CC_idP, frameP, subframeP, ra->state);

	    // Allocate 4 PRBS starting in RB 0
	    first_rb = 0;
	    vrb_map[first_rb] = 1;
	    vrb_map[first_rb + 1] = 1;
	    vrb_map[first_rb + 2] = 1;
	    vrb_map[first_rb + 3] = 1;

	    memset((void *) dl_config_pdu, 0, sizeof(nfapi_dl_config_request_pdu_t));
	    dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE;
	    dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dci_dl_pdu));
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DCI_DL_PDU_REL8_TAG;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format = NFAPI_DL_DCI_FORMAT_1A;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level = 4;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti = ra->RA_rnti;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type = 2;	// RA-RNTI : see Table 4-10 from SCF082 - nFAPI specifications
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power = 6000;	// equal to RS power

	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process = 0;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tpc = 1;	// no TPC
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.new_data_indicator_1 = 1;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_1 = 0;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.redundancy_version_1 = 0;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.virtual_resource_block_assignment_flag = 0;

	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding = getRIV(N_RB_DL, first_rb, 4);

	    // This checks if the above DCI allocation is feasible in current subframe
	    if (!CCE_allocation_infeasible(module_idP, CC_idP, 0, subframeP,
		 dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level, ra->RA_rnti)) {
		LOG_D(MAC,
		      "Frame %d: Subframe %d : Adding common DCI for RA_RNTI %x\n",
		      frameP, subframeP, ra->RA_rnti);
		dl_req_body->number_dci++;
		dl_req_body->number_pdu++;

		dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
		memset((void *) dl_config_pdu, 0, sizeof(nfapi_dl_config_request_pdu_t));
		dl_config_pdu->pdu_type                                                        = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
		dl_config_pdu->pdu_size                                                        = (uint8_t) (2 + sizeof(nfapi_dl_config_dlsch_pdu));
                dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.tl.tag                                 = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL8_TAG;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index                              = mac->pdu_index[CC_idP];
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti                                   = ra->RA_rnti;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type               = 2;	// format 1A/1B/1D
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;	// localized
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding                  = getRIV(N_RB_DL, first_rb, 4);
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation                             = 2;	//QPSK
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version                     = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks                       = 1;	// first block
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag  = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme                    = (cc->p_eNB == 1) ? 0 : 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers                       = 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands                     = 1;
		//    dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index                         = ;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity                   = 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa                                     = 4;	// 0 dB
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index               = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap                                   = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb                                   = get_subbandsize(cc->mib->message.dl_Bandwidth);	// ignored
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode                      = (cc->p_eNB == 1) ? 1 : 2;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband                 = 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector                          = 1;
		//    dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector                    = ; 
		dl_req_body->number_pdu++;
                mac->DL_req[CC_idP].sfn_sf = frameP<<4 | subframeP;

		// Program UL processing for Msg3
		get_Msg3alloc(&cc[CC_idP], subframeP, frameP,&ra->Msg3_frame, &ra->Msg3_subframe);

		LOG_D(MAC,
		      "Frame %d, Subframe %d: Setting Msg3 reception for Frame %d Subframe %d\n",
		      frameP, subframeP, ra->Msg3_frame,
		      ra->Msg3_subframe);

		fill_rar(module_idP, CC_idP, ra, frameP, cc[CC_idP].RAR_pdu.payload, N_RB_DL, 7);
		add_msg3(module_idP, CC_idP, ra, frameP, subframeP);
		ra->state = WAITMSG3;
                LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:WAITMSG3\n", module_idP, frameP, subframeP);

                T(T_ENB_MAC_UE_DL_RAR_PDU_WITH_DATA, T_INT(module_idP),
                  T_INT(CC_idP), T_INT(ra->RA_rnti), T_INT(frameP),
                  T_INT(subframeP), T_INT(0 /*harq_pid always 0? */ ),
                  T_BUFFER(cc[CC_idP].RAR_pdu.payload, 7));

		// DL request
		mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
		TX_req =
		    &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->TX_req[CC_idP].tx_request_body.number_of_pdus];
		TX_req->pdu_length = 7;	// This should be changed if we have more than 1 preamble 
		TX_req->pdu_index = mac->pdu_index[CC_idP]++;
		TX_req->num_segments = 1;
		TX_req->segments[0].segment_length = 7;
		TX_req->segments[0].segment_data =
		    cc[CC_idP].RAR_pdu.payload;
		mac->TX_req[CC_idP].tx_request_body.number_of_pdus++;
		if(RC.mac[module_idP]->scheduler_mode == SCHED_MODE_FAIR_RR){
    		  set_dl_ue_select_msg2(CC_idP, 4, -1, ra->rnti);
		}
	    }			// PDCCH CCE allocation is feasible
	}			// Msg2 frame/subframe condition
    }				// else BL/CE
}
void
generate_Msg4(module_id_t module_idP, int CC_idP, frame_t frameP,
	      sub_frame_t subframeP, RA_t * ra)
{

  eNB_MAC_INST *mac = RC.mac[module_idP];
  COMMON_channels_t *cc = mac->common_channels;
  int16_t rrc_sdu_length;
  int UE_id = -1;
  uint16_t msg4_padding;
  uint16_t msg4_post_padding;
  uint16_t msg4_header;
  uint8_t                         *vrb_map;
  int                             first_rb;
  int                             N_RB_DL;
  nfapi_dl_config_request_pdu_t   *dl_config_pdu;
  nfapi_ul_config_request_pdu_t   *ul_config_pdu;
  nfapi_tx_request_pdu_t          *TX_req;
  UE_list_t                       *UE_list=&mac->UE_list;
  nfapi_dl_config_request_t      *dl_req;
  nfapi_dl_config_request_body_t *dl_req_body;
  nfapi_ul_config_request_body_t *ul_req_body;
  uint8_t                         lcid;
  uint8_t                         offset;



#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
  int             rmax = 0;
  int             rep = 0;
  int             reps = 0;


  first_rb = 0;
  struct LTE_PRACH_ConfigSIB_v1310 *ext4_prach;
  struct LTE_PUCCH_ConfigCommon_v1310 *ext4_pucch;
  LTE_PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
  struct LTE_N1PUCCH_AN_InfoList_r13 *pucch_N1PUCCH_AN_InfoList_r13;
  LTE_PRACH_ParametersCE_r13_t *p[4] = { NULL, NULL, NULL, NULL };
  int             pucchreps[4] = { 1, 1, 1, 1 };
  int             n1pucchan[4] = { 0, 0, 0, 0 };

  if (cc[CC_idP].mib->message.schedulingInfoSIB1_BR_r13 > 0 &&
      cc[CC_idP].radioResourceConfigCommon_BR) {

    ext4_prach = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
    ext4_pucch = cc[CC_idP].radioResourceConfigCommon_BR->ext4->pucch_ConfigCommon_v1310;
    prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;
    pucch_N1PUCCH_AN_InfoList_r13 = ext4_pucch->n1PUCCH_AN_InfoList_r13;
    AssertFatal (prach_ParametersListCE_r13 != NULL, "prach_ParametersListCE_r13 is null\n");
    AssertFatal (pucch_N1PUCCH_AN_InfoList_r13 != NULL, "pucch_N1PUCCH_AN_InfoList_r13 is null\n");
    // check to verify CE-Level compatibility in SIB2_BR
    AssertFatal (prach_ParametersListCE_r13->list.count == pucch_N1PUCCH_AN_InfoList_r13->list.count, "prach_ParametersListCE_r13->list.count!= pucch_N1PUCCH_AN_InfoList_r13->list.count\n");

    switch (prach_ParametersListCE_r13->list.count) {
    case 4:
      p[3] = prach_ParametersListCE_r13->list.array[3];
      n1pucchan[3] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[3];
      AssertFatal (ext4_pucch->pucch_NumRepetitionCE_Msg4_Level3_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level3 shouldn't be NULL\n");
      pucchreps[3] = (int) (4 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level3_r13);

    case 3:
      p[2] = prach_ParametersListCE_r13->list.array[2];
      n1pucchan[2] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[2];
      AssertFatal (ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level2 shouldn't be NULL\n");
      pucchreps[2] = (int) (4 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13);
    case 2:
      p[1] = prach_ParametersListCE_r13->list.array[1];
      n1pucchan[1] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[1];
      AssertFatal (ext4_pucch->pucch_NumRepetitionCE_Msg4_Level1_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level1 shouldn't be NULL\n");
      pucchreps[1] = (int) (1 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level1_r13);
    case 1:
      p[0] = prach_ParametersListCE_r13->list.array[0];
      n1pucchan[0] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[0];
      AssertFatal (ext4_pucch->pucch_NumRepetitionCE_Msg4_Level0_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level0 shouldn't be NULL\n");
      pucchreps[0] = (int) (1 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level0_r13);
      break;
    default:
      AssertFatal (1 == 0, "Illegal count for prach_ParametersListCE_r13 %d\n", prach_ParametersListCE_r13->list.count);

    }
  }

#endif


    vrb_map = cc[CC_idP].vrb_map;

    dl_req        = &mac->DL_req[CC_idP];
    dl_req_body   = &dl_req->dl_config_request_body;
    dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
    N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);

    UE_id = find_UE_id(module_idP, ra->rnti);
    if (UE_id < 0) {
      LOG_E(MAC,"Can't find UE for t-crnti %x, kill RA procedure for this UE\n",ra->rnti);
      cancel_ra_proc(module_idP, CC_idP, frameP, ra->rnti);
      return;
    }

    // set HARQ process round to 0 for this UE

    ra->harq_pid = frame_subframe2_dl_harq_pid(cc->tdd_Config,frameP ,subframeP);

   /* // Get RRCConnectionSetup for Piggyback
    rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH, 1,	// 1 transport block
				      &cc[CC_idP].CCCH_pdu.payload[0], 0);	// not used in this case
    if(rrc_sdu_length <= 0) {
      LOG_D(MAC,"[MAC][eNB Scheduler] CCCH not allocated (%d)\n",rrc_sdu_length);
      return;
    }
    //AssertFatal(rrc_sdu_length > 0,
		//"[MAC][eNB Scheduler] CCCH not allocated\n");


    LOG_D(MAC,
	  "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: UE_id %d, rrc_sdu_length %d\n",
	  module_idP, CC_idP, frameP, subframeP, UE_id, rrc_sdu_length);*/


#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
  if (ra->rach_resource_type > 0) {

    ra->harq_pid = 0;
    // Generate DCI + repetitions first
    // This uses an MPDCCH Type 2 allocation according to Section 9.1.5 36-213, Type2 common allocation according to Table 7.1-8 (36-213)
    // Parameters:
    //    p=2+4 PRB set (number of PRB pairs 6)
    //    rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3
    //    if CELevel = 0,1 => Table 9.1.5-1b for MPDCCH candidates
    //    if CELevel = 2,3 => Table 9.1.5-2b for MPDCCH candidates
    //    distributed transmission

    // rmax from SIB2 information
    rmax = 1<<p[ra->rach_resource_type - 1]->mpdcch_NumRepetition_RA_r13;


    // choose r3 by default for Msg4 (this is ok from table 9.1.5-3 for rmax = >=4, if we choose rmax <4 it has to be less
    rep = 0;
    // get actual repetition count from Table 9.1.5-3
    reps = (rmax <= 8) ? (1 << rep) : (rmax >> (3 - rep));
    // get first narrowband
    first_rb = narrowband_to_first_rb (&cc[CC_idP], ra->msg34_narrowband);

    if ((ra->msg4_mpdcch_repetition_cnt == 0) && (mpdcch_sf_condition (mac, CC_idP, frameP, subframeP, rmax, TYPE2, -1) > 0)) {
      // Get RRCConnectionSetup for Piggyback
      ra->msg4_rrc_sdu_length = mac_rrc_data_req (module_idP, CC_idP, frameP, CCCH,
                                                  UE_RNTI(module_idP, UE_id), 1,        // 1 transport block
                                                  &cc[CC_idP].CCCH_pdu.payload[0], 0);  // not used in this case

      AssertFatal (ra->msg4_rrc_sdu_length > 0, "[MAC][eNB Scheduler] CCCH not allocated\n");


      LOG_I (MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: UE_id %d, rrc_sdu_length %d, dl_req->num_pdu %d\n", module_idP, CC_idP, frameP, subframeP, UE_id, ra->msg4_rrc_sdu_length,dl_req_body->number_pdu);

      // MPDCCH configuration for Msg4
      ra->msg4_mpdcch_done=0;
      memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t));
      dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE;
      dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_mpdcch_pdu));
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format = (ra->rach_resource_type > 1) ? 11 : 10;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band = ra->msg2_narrowband;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_prb_pairs = 6;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment = 0; // Note: this can be dynamic
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_tansmission_type = 1;   // imposed (9.1.5 in 213) for Type 2 Common search space
      AssertFatal (cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 != NULL, "cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 is null\n");
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index = 0;        // Note: this should be dynamic
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level = 24;        // OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type = 0; // t-CRNTI
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = ra->rnti;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode = (ra->rach_resource_type < 3) ? 1 : 2;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init = cc[CC_idP].physCellId;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.initial_transmission_sf_io = (frameP * 10) + subframeP;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power = 6000;     // 0dB
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding = getRIV (6, 0, 6) | (ra->msg2_narrowband<<5);
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs = 4;       // adjust according to size of RAR, 208 bits with N1A_PRB=3
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels = 0;    // fix to 4 for now
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_resource_offset = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_subframe_repetition_number = rep;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc = 3;       // N1A_PRB=3 (36.212) => 56 bits
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index_length = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.allocate_prach_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.frequency_hopping_enabled_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding = 0;        // this is not needed by OAI L1, but should be filled in
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_tx_antenna_ports = 1;

      ra->msg4_mpdcch_repetition_cnt++;
      dl_req_body->number_pdu++;
      ra->msg4_TBsize = get_TBS_DL(dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs,
					    6);
    }                           //repetition_count==0 && SF condition met

    if ((ra->msg4_mpdcch_repetition_cnt > 0)&&
	(ra->msg4_mpdcch_done==0)) {     // we're in a stream of repetitions
      LOG_I(MAC,"SFN.SF %d.%d : msg4 mpdcch repetition number %d/%d\n",
	    frameP,subframeP,ra->msg4_mpdcch_repetition_cnt,reps);
      if (ra->msg4_mpdcch_repetition_cnt == reps) {    // this is the last mpdcch repetition
        ra->msg4_mpdcch_done = 1;
	if (cc[CC_idP].tdd_Config == NULL) {    // FDD case
          // wait 2 subframes for PDSCH transmission
          if (subframeP > 7)
            ra->Msg4_frame = (frameP + 1) & 1023;
          else
            ra->Msg4_frame = frameP;
          ra->Msg4_subframe = (subframeP + 2) % 10;
	  LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Set Msg4 PDSCH in %d.%d\n",
		module_idP, CC_idP, frameP, subframeP, ra->Msg4_frame,ra->Msg4_subframe);
        } else {
          AssertFatal (1 == 0, "TDD case not done yet\n");
        }
      }
      else if (ra->msg4_mpdcch_done==0)
	ra->msg4_mpdcch_repetition_cnt++;
    }
// mpdcch_repetition_count == reps
    else if ((ra->Msg4_frame == frameP) && (ra->Msg4_subframe == subframeP)) {

      // Program PDSCH

      LOG_I (MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating Msg4 BR with RRC Piggyback (ce_level %d RNTI %x)\n",
	     module_idP, CC_idP, frameP, subframeP, ra->rach_resource_type - 1, ra->rnti);


      dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
      memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t));
      dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
      dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_dlsch_pdu));
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index = mac->pdu_index[CC_idP];
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->rnti;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2;   // format 1A/1B/1D
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;     // localized
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV (N_RB_DL, first_rb, 6);  // check that this isn't getRIV(6,0,6)
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2; //QPSK
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version = 0;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1;   // first block
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag = 0;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme = (cc[CC_idP].p_eNB == 1) ? 0 : 1;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers = 1;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands = 1;
      //      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index                         = ;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity = 1;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4; // 0 dB
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index = 0;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize (cc[CC_idP].mib->message.dl_Bandwidth); // ignored
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode = (cc[CC_idP].p_eNB == 1) ? 1 : 2;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband = 1;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1;
      //      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector                    = ;

      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;

      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type = (ra->rach_resource_type < 3) ? 1 : 2;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type = 2;        // not SI message
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.initial_transmission_sf_io = (10 * frameP) + subframeP;
      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag = 0;
      dl_req_body->number_pdu++;


      ra->state = WAITMSG4ACK;

      lcid = 0;

      UE_list->UE_sched_ctrl[UE_id].round[CC_idP][ra->harq_pid] = 0;
      msg4_header = 1 + 6 + 1;        // CR header, CR CE, SDU header
      AssertFatal((ra->msg4_TBsize - ra->msg4_rrc_sdu_length - msg4_header)>=0,
		  "msg4_TBS %d is too small, change mcs to increase by %d bytes\n",ra->msg4_TBsize,ra->msg4_rrc_sdu_length+msg4_header-ra->msg4_TBsize);
      if ((ra->msg4_TBsize - ra->msg4_rrc_sdu_length - msg4_header) <= 2) {
	msg4_padding = ra->msg4_TBsize - ra->msg4_rrc_sdu_length - msg4_header;
	msg4_post_padding = 0;
      } else {
	msg4_padding = 0;
	msg4_post_padding = ra->msg4_TBsize - ra->msg4_rrc_sdu_length - msg4_header - 1;
      }

      LOG_I (MAC, "[eNB %d][RAPROC] CC_id %d Frame %d subframeP %d Msg4 : TBS %d, sdu_len %d, msg4_header %d, msg4_padding %d, msg4_post_padding %d\n",
	     module_idP, CC_idP, frameP, subframeP, ra->msg4_TBsize, ra->msg4_rrc_sdu_length, msg4_header, msg4_padding, msg4_post_padding);
      DevAssert (UE_id != UE_INDEX_INVALID);  // FIXME not sure how to gracefully return
      // CHECK THIS: &cc[CC_idP].CCCH_pdu.payload[0]
      offset = generate_dlsch_header ((unsigned char *) mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], 1,       //num_sdus
				      (unsigned short *) &ra->msg4_rrc_sdu_length,     //
				      &lcid,  // sdu_lcid
				      255,    // no drx
				      31,     // no timing advance
				      ra->cont_res_id,       // contention res id
				      msg4_padding,   // no padding
				      msg4_post_padding);

      memcpy ((void *) &mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0][(unsigned char) offset], &cc[CC_idP].CCCH_pdu.payload[0], ra->msg4_rrc_sdu_length);

      // DL request
      mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
      TX_req = &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->TX_req[CC_idP].tx_request_body.number_of_pdus];
      TX_req->pdu_length = ra->msg4_TBsize;
      TX_req->pdu_index = mac->pdu_index[CC_idP]++;
      TX_req->num_segments = 1;
      TX_req->segments[0].segment_length = ra->msg4_TBsize;
      TX_req->segments[0].segment_data = mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0];
      mac->TX_req[CC_idP].tx_request_body.number_of_pdus++;

      // Program ACK/NAK for Msg4 PDSCH
      int             absSF = (frameP * 10) + subframeP;
      // see Section 10.2 from 36.213
      int             ackNAK_absSF = absSF + reps + 3;
      AssertFatal (reps == 1, "Have to handle programming of ACK when PDSCH repetitions is > 1\n");
      ul_req_body = &mac->UL_req_tmp[CC_idP][ackNAK_absSF % 10].ul_config_request_body;
      ul_config_pdu = &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus];

      ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE;
      ul_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_ul_config_uci_harq_pdu));
      ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.handle = 0;      // don't know how to use this
      ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.rnti = ra->rnti;
      ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.ue_type = (ra->rach_resource_type < 3) ? 1 : 2;
      ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.empty_symbols = 0;
      ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.total_number_of_repetitions = pucchreps[ra->rach_resource_type - 1];
      ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.repetition_number = 0;
      // Note need to keep sending this across reptitions!!!! Not really for PUCCH, to ask small-cell forum, we'll see for the other messages, maybe parameters change across repetitions and FAPI has to provide for that
      if (cc[CC_idP].tdd_Config == NULL) {    // FDD case
	ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel9_fdd.n_pucch_1_0 = n1pucchan[ra->rach_resource_type - 1];
	// NOTE: How to fill in the rest of the n_pucch_1_0 information 213 Section 10.1.2.1 in the general case
	// = N_ECCE_q + Delta_ARO + n1pucchan[ce_level]
	// higher in the MPDCCH configuration, N_ECCE_q is hard-coded to 0, and harq resource offset to 0 =>
	// Delta_ARO = 0 from Table 10.1.2.1-1
	ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel9_fdd.harq_size = 1; // 1-bit ACK/NAK
	ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel9_fdd.number_of_pucch_resources = 1;
      } else {
	AssertFatal (1 == 0, "PUCCH configuration for ACK/NAK not handled yet for TDD BL/CE case\n");
      }
      ul_req_body->number_of_pdus++;
      T (T_ENB_MAC_UE_DL_PDU_WITH_DATA, T_INT (module_idP), T_INT (CC_idP), T_INT (ra->rnti), T_INT (frameP), T_INT (subframeP),
	 T_INT (0 /*harq_pid always 0? */ ), T_BUFFER (&mac->UE_list.DLSCH_pdu[CC_idP][0][UE_id].payload[0], ra->msg4_TBsize));

      if (opt_enabled == 1) {
	trace_pdu (1, (uint8_t *) mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], ra->msg4_rrc_sdu_length, UE_id, 3, UE_RNTI (module_idP, UE_id), mac->frame, mac->subframe, 0, 0);
	LOG_D (OPT, "[eNB %d][DLSCH] CC_id %d Frame %d trace pdu for rnti %x with size %d\n", module_idP, CC_idP, frameP, UE_RNTI (module_idP, UE_id), ra->msg4_rrc_sdu_length);
      }
    }                           // Msg4 frame/subframe
  }                             // rach_resource_type > 0
  else
#endif
    {
    // This is normal LTE case
	LOG_I(MAC, "generate_Msg4 ra->Msg4_frame SFN/SF: %d.%d,  frameP SFN/SF: %d.%d FOR eNB_Mod: %d \n", ra->Msg4_frame, ra->Msg4_subframe, frameP, subframeP, module_idP);
    	if ((ra->Msg4_frame == frameP) && (ra->Msg4_subframe == subframeP)) {

    	    // Get RRCConnectionSetup for Piggyback
    	    /*rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH, 1,	// 1 transport block
    					      &cc[CC_idP].CCCH_pdu.payload[0], ENB_FLAG_YES, module_idP, 0);	// not used in this case*/

	  // check if there's data on the CCCH to send with Msg4
	  rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH, 
					    UE_RNTI(module_idP,UE_id),1,	// 1 transport block
					    &cc[CC_idP].CCCH_pdu.payload[0], 0);	// not used in this case

	  if (rrc_sdu_length > 0) { 
	    LOG_D(MAC,
    	    	  "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: UE_id %d, rrc_sdu_length %d\n",
    	    	  module_idP, CC_idP, frameP, subframeP, UE_id, rrc_sdu_length);
	    
	    //    	    AssertFatal(rrc_sdu_length > 0,
	    //    			"[MAC][eNB Scheduler] CCCH not allocated, rrc_sdu_length: %d\n", rrc_sdu_length);
	    
	    
	    
	    LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating Msg4 with RRC Piggyback (RNTI %x)\n",
		  module_idP, CC_idP, frameP, subframeP, ra->rnti);
	  
	    /// Choose first 4 RBs for Msg4, should really check that these are free!
	    first_rb = 0;
	    
	    vrb_map[first_rb] = 1;
	    vrb_map[first_rb + 1] = 1;
	    vrb_map[first_rb + 2] = 1;
	    vrb_map[first_rb + 3] = 1;
	    
	    
	    // Compute MCS/TBS for 3 PRB (coded on 4 vrb)
	    msg4_header = 1 + 6 + 1;	// CR header, CR CE, SDU header
	    
	    if ((rrc_sdu_length + msg4_header) <= 22) {
	      ra->msg4_mcs = 4;
	      ra->msg4_TBsize = 22;
	    } else if ((rrc_sdu_length + msg4_header) <= 28) {
	      ra->msg4_mcs = 5;
	      ra->msg4_TBsize = 28;
	    } else if ((rrc_sdu_length + msg4_header) <= 32) {
	      ra->msg4_mcs = 6;
	      ra->msg4_TBsize = 32;
	    } else if ((rrc_sdu_length + msg4_header) <= 41) {
	      ra->msg4_mcs = 7;
	      ra->msg4_TBsize = 41;
	    } else if ((rrc_sdu_length + msg4_header) <= 49) {
	      ra->msg4_mcs = 8;
	      ra->msg4_TBsize = 49;
	    } else if ((rrc_sdu_length + msg4_header) <= 57) {
	      ra->msg4_mcs = 9;
	      ra->msg4_TBsize = 57;
	    }
	    
	    fill_nfapi_dl_dci_1A(dl_config_pdu, 4,	// aggregation_level
				 ra->rnti,	// rnti
				 1,	// rnti_type, CRNTI
				 ra->harq_pid,	// harq_process
				 1,	// tpc, none
				 getRIV(N_RB_DL, first_rb, 4),	// resource_block_coding
				 ra->msg4_mcs,	// mcs
				 1,	// ndi
				 0,	// rv
				 0);	// vrb_flag
	    
	    LOG_D(MAC,
		  "Frame %d, subframe %d: Msg4 DCI pdu_num %d (rnti %x,rnti_type %d,harq_pid %d, resource_block_coding (%p) %d\n",
		  frameP, subframeP, dl_req_body->number_pdu,
		  dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti,
		  dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type,
		  dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process,
		  &dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding,
		  dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding);
	    AssertFatal(dl_config_pdu->dci_dl_pdu.
			dci_dl_pdu_rel8.resource_block_coding < 8192,
			"resource_block_coding %u < 8192\n",
			dl_config_pdu->dci_dl_pdu.
			dci_dl_pdu_rel8.resource_block_coding);
	    if (!CCE_allocation_infeasible(module_idP, CC_idP, 1, subframeP,
		 dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level, ra->rnti)) {
		dl_req_body->number_dci++;
		dl_req_body->number_pdu++;

		ra->state = WAITMSG4ACK;
                LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:WAITMSG4ACK\n", module_idP, frameP, subframeP);

		// increment Absolute subframe by 8 for Msg4 retransmission
		LOG_D(MAC,
		      "Frame %d, Subframe %d: Preparing for Msg4 retransmission currently %d.%d\n",
		      frameP, subframeP, ra->Msg4_frame,
		      ra->Msg4_subframe);
		get_retransmission_timing(mac->common_channels[CC_idP].tdd_Config,&ra->Msg4_frame,&ra->Msg4_subframe);

		LOG_D(MAC,
		      "Frame %d, Subframe %d: Msg4 retransmission in %d.%d\n",
		      frameP, subframeP, ra->Msg4_frame,
		      ra->Msg4_subframe);
		lcid = 0;

		// put HARQ process round to 0
		ra->harq_pid = frame_subframe2_dl_harq_pid(cc->tdd_Config,frameP ,subframeP);
		UE_list->UE_sched_ctrl[UE_id].round[CC_idP][ra->harq_pid] = 0;

		if ((ra->msg4_TBsize - rrc_sdu_length - msg4_header) <= 2) {
		    msg4_padding = ra->msg4_TBsize - rrc_sdu_length - msg4_header;
		    msg4_post_padding = 0;
		} else {
		    msg4_padding = 0;
		    msg4_post_padding = ra->msg4_TBsize - rrc_sdu_length - msg4_header - 1;
		}

		LOG_D(MAC,
		      "[eNB %d][RAPROC] CC_idP %d Frame %d subframeP %d Msg4 : TBS %d, sdu_len %d, msg4_header %d, msg4_padding %d, msg4_post_padding %d\n",
		      module_idP, CC_idP, frameP, subframeP,
		      ra->msg4_TBsize, rrc_sdu_length, msg4_header,
		      msg4_padding, msg4_post_padding);
		DevAssert(UE_id != UE_INDEX_INVALID);	// FIXME not sure how to gracefully return
		// CHECK THIS: &cc[CC_idP].CCCH_pdu.payload[0]
		int num_sdus = rrc_sdu_length > 0 ? 1 : 0;							       
		offset = generate_dlsch_header((unsigned char *) mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], 
							       num_sdus,	//num_sdus
					       (unsigned short *) &rrc_sdu_length,	//
					       &lcid,	// sdu_lcid
					       255,	// no drx
					       31,	// no timing advance
					       ra->cont_res_id,	// contention res id
					       msg4_padding,	// no padding
					       msg4_post_padding);

		memcpy((void *) &mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0][(unsigned char)offset],
		       &cc[CC_idP].CCCH_pdu.payload[0], rrc_sdu_length);

		// DLSCH Config
		fill_nfapi_dlsch_config(mac, dl_req_body, ra->msg4_TBsize, mac->pdu_index[CC_idP], ra->rnti, 2,	// resource_allocation_type : format 1A/1B/1D
					0,	// virtual_resource_block_assignment_flag : localized
					getRIV(N_RB_DL, first_rb, 4),	// resource_block_coding : RIV, 4 PRB
					2,	// modulation: QPSK
					0,	// redundancy version
					1,	// transport_blocks
					0,	// transport_block_to_codeword_swap_flag (0)
					(cc->p_eNB == 1) ? 0 : 1,	// transmission_scheme
					1,	// number of layers
					1,	// number of subbands
					//0,                         // codebook index 
					1,	// ue_category_capacity
					4,	// pa: 0 dB
					0,	// delta_power_offset_index
					0,	// ngap
					1,	// NPRB = 3 like in DCI
					(cc->p_eNB == 1) ? 1 : 2,	// transmission mode
					1,	// num_bf_prb_per_subband
					1);	// num_bf_vector
		LOG_D(MAC,
		      "Filled DLSCH config, pdu number %d, non-dci pdu_index %d\n",
		      dl_req_body->number_pdu, mac->pdu_index[CC_idP]);

		// Tx request
		mac->TX_req[CC_idP].sfn_sf =
		    fill_nfapi_tx_req(&mac->TX_req[CC_idP].tx_request_body,
				      (frameP * 10) + subframeP,
				      rrc_sdu_length,
				      mac->pdu_index[CC_idP],
				      mac->UE_list.
				      DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0]);
		mac->pdu_index[CC_idP]++;

                dl_req->sfn_sf = mac->TX_req[CC_idP].sfn_sf;

		LOG_D(MAC, "Filling UCI ACK/NAK information, cce_idx %d\n",
		      dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx);
		// Program PUCCH1a for ACK/NAK
		// Program ACK/NAK for Msg4 PDSCH
		fill_nfapi_uci_acknak(module_idP,
				      CC_idP,
				      ra->rnti,
				      (frameP * 10) + subframeP,
				      dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx);


		T(T_ENB_MAC_UE_DL_PDU_WITH_DATA, T_INT(module_idP),
		  T_INT(CC_idP), T_INT(ra->rnti), T_INT(frameP),
		  T_INT(subframeP), T_INT(0 /*harq_pid always 0? */ ),
		  T_BUFFER(&mac->UE_list.DLSCH_pdu[CC_idP][0][UE_id].
			   payload[0], ra->msg4_TBsize));

		if (opt_enabled == 1) {
		    trace_pdu(DIRECTION_DOWNLINK,
			      (uint8_t *) mac->
			      UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0],
			      rrc_sdu_length, UE_id,  WS_C_RNTI,
			      UE_RNTI(module_idP, UE_id), mac->frame,
			      mac->subframe, 0, 0);
		    LOG_D(OPT,
			  "[eNB %d][DLSCH] CC_id %d Frame %d trace pdu for rnti %x with size %d\n",
			  module_idP, CC_idP, frameP, UE_RNTI(module_idP,
							      UE_id),
			  rrc_sdu_length);
		}
		if(RC.mac[module_idP]->scheduler_mode == SCHED_MODE_FAIR_RR){
        	  set_dl_ue_select_msg4(CC_idP, 4, UE_id, ra->rnti);
		}
	    }			// CCE Allocation feasible
	  }
	  else {
	    LOG_I(MAC,
		     "eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Delaying Msg4 for RRC Piggyback (RNTI %x)\n",
		     module_idP, CC_idP, frameP, subframeP, ra->rnti);
	    ra->Msg4_subframe ++;
	    ra->Msg4_delay_cnt++;
	    if (ra->Msg4_delay_cnt==10) cancel_ra_proc(module_idP, CC_idP, frameP, ra->rnti);

	    if (ra->Msg4_subframe == 10) {
	      ra->Msg4_frame++;
	      ra->Msg4_frame&=1023;
	      ra->Msg4_subframe = 0;
	    }
	  }
	}			// msg4 frame/subframe
    }				// else rach_resource_type
}

void
check_Msg4_retransmission(module_id_t module_idP, int CC_idP,
			  frame_t frameP, sub_frame_t subframeP, RA_t * ra)
{

    eNB_MAC_INST *mac = RC.mac[module_idP];
    COMMON_channels_t *cc = mac->common_channels;
    int UE_id = -1;
    uint8_t *vrb_map;
    int first_rb;
    int N_RB_DL;
    nfapi_dl_config_request_pdu_t *dl_config_pdu;
    UE_list_t *UE_list = &mac->UE_list;
    nfapi_dl_config_request_t *dl_req;
    nfapi_dl_config_request_body_t *dl_req_body;

    int round;
    /*
       #if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
       COMMON_channels_t               *cc  = mac->common_channels;

       int rmax            = 0;
       int rep             = 0; 
       int reps            = 0;

       first_rb        = 0;
       struct PRACH_ConfigSIB_v1310 *ext4_prach;
       PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
       PRACH_ParametersCE_r13_t *p[4];

       if (cc[CC_idP].radioResourceConfigCommon_BR) {

       ext4_prach                 = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
       prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;

       switch (prach_ParametersListCE_r13->list.count) {
       case 4:
       p[3]=prach_ParametersListCE_r13->list.array[3];
       case 3:
       p[2]=prach_ParametersListCE_r13->list.array[2];
       case 2:
       p[1]=prach_ParametersListCE_r13->list.array[1];
       case 1:
       p[0]=prach_ParametersListCE_r13->list.array[0];
       default:
       AssertFatal(1==0,"Illegal count for prach_ParametersListCE_r13 %d\n",prach_ParametersListCE_r13->list.count);
       }
       }
       #endif
     */

    // check HARQ status and retransmit if necessary


    UE_id = find_UE_id(module_idP, ra->rnti);
    AssertFatal(UE_id >= 0, "Can't find UE for t-crnti\n");

    round = UE_list->UE_sched_ctrl[UE_id].round[CC_idP][ra->harq_pid];
    vrb_map = cc[CC_idP].vrb_map;

    dl_req = &mac->DL_req[CC_idP];
    dl_req_body = &dl_req->dl_config_request_body;
    dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
    N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);

    LOG_D(MAC,
	  "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Checking if Msg4 for harq_pid %d was acknowledged (round %d), UE_id: %d \n",
	  module_idP, CC_idP, frameP, subframeP, ra->harq_pid, round, UE_id);

    if (round != 8) {

#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
	if (ra->rach_resource_type > 0) {
	    AssertFatal(1 == 0,
			"Msg4 Retransmissions not handled yet for BL/CE UEs\n");
	} else
#endif
	{
	    if ((ra->Msg4_frame == frameP)
		&& (ra->Msg4_subframe == subframeP)) {

		//ra->wait_ack_Msg4++;
		// we have to schedule a retransmission

                dl_req->sfn_sf = frameP<<4 | subframeP;

		first_rb = 0;
		vrb_map[first_rb] = 1;
		vrb_map[first_rb + 1] = 1;
		vrb_map[first_rb + 2] = 1;
		vrb_map[first_rb + 3] = 1;

		fill_nfapi_dl_dci_1A(dl_config_pdu, 4,	// aggregation_level
				     ra->rnti,	// rnti
				     1,	// rnti_type, CRNTI
				     ra->harq_pid,	// harq_process
				     1,	// tpc, none
				     getRIV(N_RB_DL, first_rb, 4),	// resource_block_coding
				     ra->msg4_mcs,	// mcs
				     1,	// ndi
				     round & 3,	// rv
				     0);	// vrb_flag

		if (!CCE_allocation_infeasible
		    (module_idP, CC_idP, 1, subframeP,
		     dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.
		     aggregation_level, ra->rnti)) {
		    dl_req_body->number_dci++;
		    dl_req_body->number_pdu++;
                    dl_req_body->tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;

		    LOG_D(MAC,
			  "msg4 retransmission for rnti %x (round %d) fsf %d/%d\n",
			  ra->rnti, round, frameP, subframeP);
		    // DLSCH Config
                    //DJP - fix this pdu_index = -1
		    LOG_D(MAC, "check_Msg4_retransmission() before fill_nfapi_dlsch_config() with pdu_index = -1 \n");
		    fill_nfapi_dlsch_config(mac, dl_req_body, ra->msg4_TBsize,
					    -1
					    /* retransmission, no pdu_index */
					    , ra->rnti, 2,	// resource_allocation_type : format 1A/1B/1D
					    0,	// virtual_resource_block_assignment_flag : localized
					    getRIV(N_RB_DL, first_rb, 4),	// resource_block_coding : RIV, 4 PRB
					    2,	// modulation: QPSK
					    round & 3,	// redundancy version
					    1,	// transport_blocks
					    0,	// transport_block_to_codeword_swap_flag (0)
					    (cc->p_eNB == 1) ? 0 : 1,	// transmission_scheme
					    1,	// number of layers
					    1,	// number of subbands
					    //0,                         // codebook index 
					    1,	// ue_category_capacity
					    4,	// pa: 0 dB
					    0,	// delta_power_offset_index
					    0,	// ngap
					    1,	// NPRB = 3 like in DCI
					    (cc->p_eNB == 1) ? 1 : 2,	// transmission mode
					    1,	// num_bf_prb_per_subband
					    1);	// num_bf_vector
		    if(RC.mac[module_idP]->scheduler_mode == SCHED_MODE_FAIR_RR){
	       	      set_dl_ue_select_msg4(CC_idP, 4, UE_id, ra->rnti);
		    }
		} else
		    LOG_D(MAC,
			  "msg4 retransmission for rnti %x (round %d) fsf %d/%d CCE allocation failed!\n",
			  ra->rnti, round, frameP, subframeP);


		// Program PUCCH1a for ACK/NAK


		fill_nfapi_uci_acknak(module_idP, CC_idP,
				      ra->rnti,
				      (frameP * 10) + subframeP,
				      dl_config_pdu->dci_dl_pdu.
				      dci_dl_pdu_rel8.cce_idx);

		// prepare frame for retransmission
		get_retransmission_timing(mac->common_channels[CC_idP].tdd_Config,&ra->Msg4_frame,&ra->Msg4_subframe);

		LOG_W(MAC,
		      "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Msg4 not acknowledged, adding ue specific dci (rnti %x) for RA (Msg4 Retransmission round %d in %d.%d)\n",
		      module_idP, CC_idP, frameP, subframeP, ra->rnti,
		      round, ra->Msg4_frame, ra->Msg4_subframe);

	    }			// Msg4 frame/subframe
	}			// regular LTE case
    } else {
	LOG_D(MAC,
	      "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d : Msg4 acknowledged\n",
	      module_idP, CC_idP, frameP, subframeP);
	ra->state = IDLE;
        LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:IDLE\n", module_idP, frameP, subframeP);
	UE_id = find_UE_id(module_idP, ra->rnti);
	DevAssert(UE_id != -1);
	mac->UE_list.UE_template[UE_PCCID(module_idP, UE_id)][UE_id].configured = TRUE;
        cancel_ra_proc(module_idP, CC_idP, frameP, ra->rnti);
    }
}

void
schedule_RA(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP)
{

    int CC_id;
    eNB_MAC_INST *mac = RC.mac[module_idP];
    COMMON_channels_t *cc = mac->common_channels;
    RA_t *ra;
    uint8_t i;


    start_meas(&mac->schedule_ra);

    for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
	// skip UL component carriers if TDD
	if (is_UL_sf(&cc[CC_id], subframeP) == 1)
	    continue;

	for (i = 0; i < NB_RA_PROC_MAX; i++) {

	    ra = (RA_t *) & cc[CC_id].ra[i];

            //LOG_D(MAC,"RA[state:%d]\n",ra->state);

	    if (ra->state == MSG2)
		generate_Msg2(module_idP, CC_id, frameP, subframeP, ra);
		else if (ra->state == MSG4 && ra->Msg4_frame == frameP && ra->Msg4_subframe == subframeP )
		generate_Msg4(module_idP, CC_id, frameP, subframeP, ra);
	    else if (ra->state == WAITMSG4ACK)
		check_Msg4_retransmission(module_idP, CC_id, frameP,
					  subframeP, ra);

	}			// for i=0 .. N_RA_PROC-1 
    }				// CC_id

    stop_meas(&mac->schedule_ra);

}


// handles the event of MSG1 reception
void
initiate_ra_proc(module_id_t module_idP,
		 int CC_id,
		 frame_t frameP,
		 sub_frame_t subframeP,
		 uint16_t preamble_index,
		 int16_t timing_offset, uint16_t ra_rnti
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
		 , uint8_t rach_resource_type
#endif
    )
{

    uint8_t i;

    COMMON_channels_t *cc = &RC.mac[module_idP]->common_channels[CC_id];
    RA_t *ra = &cc->ra[0];
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))


    struct LTE_PRACH_ConfigSIB_v1310 *ext4_prach = NULL;
    LTE_PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13 = NULL;
  


    if (cc->mib->message.schedulingInfoSIB1_BR_r13>0) {
      AssertFatal(cc->radioResourceConfigCommon_BR != NULL,"radioResourceConfigCommon_BR is null\n");
      AssertFatal(cc->radioResourceConfigCommon_BR->ext4 != NULL, "radioResourceConfigCommon_BR->ext4 is null\n");
      ext4_prach = cc->radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
      AssertFatal(ext4_prach!=NULL,"ext4_prach is null\n");
      prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;
    }

#endif /* #if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0)) */

    LOG_D(MAC,
	  "[eNB %d][RAPROC] CC_id %d Frame %d, Subframe %d  Initiating RA procedure for preamble index %d\n",
	  module_idP, CC_id, frameP, subframeP, preamble_index);
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
    LOG_D(MAC,
	  "[eNB %d][RAPROC] CC_id %d Frame %d, Subframe %d  PRACH resource type %d\n",
	  module_idP, CC_id, frameP, subframeP, rach_resource_type);
#endif

    uint16_t msg2_frame = frameP;
    uint16_t msg2_subframe = subframeP;
    int offset;

    static uint8_t failure_cnt = 0 ;

#if (LTE_RRC_VERSION >= MAKE_VERSION(13, 0, 0))

    if (prach_ParametersListCE_r13 &&
	prach_ParametersListCE_r13->list.count < rach_resource_type) {
	LOG_E(MAC,
	      "[eNB %d][RAPROC] CC_id %d Received impossible PRACH resource type %d, only %d CE levels configured\n",
	      module_idP, CC_id, rach_resource_type,
	      (int) prach_ParametersListCE_r13->list.count);
	return;
    }

#endif /* #if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0)) */

    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC, 1);
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC, 0);

    for (i = 0; i < NB_RA_PROC_MAX; i++) {
	if (ra[i].state == IDLE) {
	    int loop = 0;
	    LOG_D(MAC, "Frame %d, Subframe %d: Activating RA process %d\n",
		  frameP, subframeP, i);
	    ra[i].state = MSG2;
	    ra[i].Msg4_delay_cnt=0;
	    ra[i].timing_offset = timing_offset;
	    ra[i].preamble_subframe = subframeP;
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
	    ra[i].rach_resource_type = rach_resource_type;
	    ra[i].msg2_mpdcch_repetition_cnt = 0;
	    ra[i].msg4_mpdcch_repetition_cnt = 0;
#endif



            //TODO Fill in other TDD config. What about nfapi_mode?
            if(cc->tdd_Config!=NULL){
              switch(cc->tdd_Config->subframeAssignment){
                default: printf("%s:%d: TODO\n", __FILE__, __LINE__); abort();
                case 1 :
                  offset = 6;
                  break;
              }
            }else{//FDD
                // DJP - this is because VNF is 2 subframes ahead of PNF and TX needs 4 subframes
                if (nfapi_mode)
                  offset = 7;
                else
                  offset = 5;
            }

            add_subframe(&msg2_frame, &msg2_subframe, offset);

            ra[i].Msg2_frame         = msg2_frame;
            ra[i].Msg2_subframe      = msg2_subframe;

            LOG_D(MAC,"%s() Msg2[%04d%d] SFN/SF:%04d%d offset:%d\n", __FUNCTION__,ra[i].Msg2_frame,ra[i].Msg2_subframe,frameP,subframeP,offset);

            ra[i].Msg2_subframe = (subframeP + offset) % 10;
            /* TODO: find better procedure to allocate RNTI */
	    do {
#if defined(USRP_REC_PLAY) // deterministic rnti in usrp record/playback mode
	        static int drnti[MAX_MOBILES_PER_ENB] = { 0xbda7, 0x71da, 0x9c40, 0xc350, 0x2710, 0x4e20, 0x7530, 0x1388, 0x3a98, 0x61a8, 0x88b8, 0xafc8, 0xd6d8, 0x1b58, 0x4268, 0x6978 };
	        int j = 0;
		int nb_ue = 0;
		for (j = 0; j < MAX_MOBILES_PER_ENB; j++) {
		    if (UE_RNTI(module_idP, j) > 0) {
		        nb_ue++;
		    } else {
		        break;
		    }
		}
		if (nb_ue >= MAX_MOBILES_PER_ENB) {
		    printf("No more free RNTI available, increase MAX_MOBILES_PER_ENB\n");
		    abort();
		}
		ra[i].rnti = drnti[nb_ue];
#else	
		ra[i].rnti = taus();
#endif
		loop++;
	    }
	    while (loop != 100 &&
		   /* TODO: this is not correct, the rnti may be in use without
		    * being in the MAC yet. To be refined.
		    */
		   !(find_UE_id(module_idP, ra[i].rnti) == -1 &&
		     /* 1024 and 60000 arbirarily chosen, not coming from standard */
		     ra[i].rnti >= 1024 && ra[i].rnti < 60000));
	    if (loop == 100) {
		printf("%s:%d:%s: FATAL ERROR! contact the authors\n",
		       __FILE__, __LINE__, __FUNCTION__);
		abort();
	    }
	    ra[i].RA_rnti = ra_rnti;
	    ra[i].preamble_index = preamble_index;
	    failure_cnt = 0;
	    LOG_D(MAC,
		  "[eNB %d][RAPROC] CC_id %d Frame %d Activating RAR generation in Frame %d, subframe %d for process %d, rnti %x, state %d\n",
		  module_idP, CC_id, frameP, ra[i].Msg2_frame,
		  ra[i].Msg2_subframe, i, ra[i].rnti, ra[i].state);

	    return;
	}
    }

    LOG_E(MAC,
	  "[eNB %d][RAPROC] FAILURE: CC_id %d Frame %d Initiating RA procedure for preamble index %d\n",
	  module_idP, CC_id, frameP, preamble_index);
  
    failure_cnt++;
    if(failure_cnt > 20) {
      LOG_E(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Clear Random access information\n", module_idP, CC_id, frameP);
      clear_ra_proc(module_idP, CC_id, frameP);
    }
  
}

void
cancel_ra_proc(module_id_t module_idP, int CC_id, frame_t frameP,
	       rnti_t rnti)
{
    unsigned char i;
    RA_t *ra = (RA_t *) & RC.mac[module_idP]->common_channels[CC_id].ra[0];

    MSC_LOG_EVENT(MSC_PHY_ENB, "RA Cancelling procedure ue %" PRIx16 " ",
		  rnti);
    LOG_D(MAC,
	  "[eNB %d][RAPROC] CC_id %d Frame %d Cancelling RA procedure for UE rnti %x\n",
	  module_idP, CC_id, frameP, rnti);

    for (i = 0; i < NB_RA_PROC_MAX; i++) {
      if (rnti == ra[i].rnti) {
        ra[i].state = IDLE;
        ra[i].timing_offset = 0;
        ra[i].RRC_timer = 20;
        ra[i].rnti = 0;
        ra[i].msg3_round = 0;
        LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Canceled RA procedure for UE rnti %x\n", module_idP, CC_id, frameP, rnti);
      }
    }
}

void clear_ra_proc(module_id_t module_idP, int CC_id, frame_t frameP)
{
  unsigned char i;
  RA_t *ra = (RA_t *) & RC.mac[module_idP]->common_channels[CC_id].ra[0];

  for (i = 0; i < NB_RA_PROC_MAX; i++) {
    LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Clear Random access information rnti %x\n", module_idP, CC_id, frameP, ra[i].rnti);
    ra[i].state = IDLE;
    ra[i].timing_offset = 0;
    ra[i].RRC_timer = 20;
    ra[i].rnti = 0;
    ra[i].msg3_round = 0;
  }
}