eNB_scheduler_ulsch.c 79 KB
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/*
 * 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
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 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
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 * 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
 */
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/*! \file eNB_scheduler_ulsch.c
 * \brief eNB procedures for the ULSCH transport channel
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 * \author Navid Nikaein and Raymond Knopp
 * \date 2010 - 2014
 * \email: navid.nikaein@eurecom.fr
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 * \version 1.0
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 * @ingroup _mac

 */

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

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#include "assertions.h"
#include "PHY/defs.h"
#include "PHY/extern.h"

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

#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/proto.h"
#include "LAYER2/MAC/extern.h"
#include "UTIL/LOG/log.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"

#include "RRC/LITE/extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"

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

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

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#include "T.h"

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#define ENABLE_MAC_PAYLOAD_DEBUG
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#define DEBUG_eNB_SCHEDULER 1

// This table holds the allowable PRB sizes for ULSCH transmissions
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uint8_t rb_table[34] =
    { 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32,
    36, 40, 45, 48, 50, 54, 60, 64, 72, 75, 80, 81, 90, 96, 100
};
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extern mui_t    rrc_eNB_mui;
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void
rx_sdu(const module_id_t enb_mod_idP,
       const int CC_idP,
       const frame_t frameP,
       const sub_frame_t subframeP,
       const rnti_t rntiP,
       uint8_t * sduP,
       const uint16_t sdu_lenP,
       const uint16_t timing_advance, const uint8_t ul_cqi)
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{
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    int current_rnti = rntiP;
    unsigned char rx_ces[MAX_NUM_CE], num_ce, num_sdu, i, *payload_ptr;
    unsigned char rx_lcids[NB_RB_MAX];
    unsigned short rx_lengths[NB_RB_MAX];
    int UE_id = find_UE_id(enb_mod_idP, current_rnti);
    int RA_id;
    int ii, j;
    eNB_MAC_INST *mac = RC.mac[enb_mod_idP];
    int harq_pid =
	subframe2harqpid(&mac->common_channels[CC_idP], frameP, subframeP);

    UE_list_t *UE_list = &mac->UE_list;
    int crnti_rx = 0;
    int old_buffer_info;
    RA_t *ra =
	(RA_t *) & RC.mac[enb_mod_idP]->common_channels[CC_idP].ra[0];
    int first_rb = 0;

    start_meas(&mac->rx_ulsch_sdu);

    if ((UE_id > NUMBER_OF_UE_MAX) || (UE_id == -1))
	for (ii = 0; ii < NB_RB_MAX; ii++) {
	    rx_lengths[ii] = 0;
	}

    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_RX_SDU, 1);
    if (opt_enabled == 1) {
	trace_pdu(0, sduP, sdu_lenP, 0, 3, current_rnti, frameP, subframeP,
		  0, 0);
	LOG_D(OPT, "[eNB %d][ULSCH] Frame %d  rnti %x  with size %d\n",
	      enb_mod_idP, frameP, current_rnti, sdu_lenP);
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    }
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    if (UE_id != -1) {
	LOG_D(MAC,
	      "[eNB %d][PUSCH %d] CC_id %d Received ULSCH sdu round %d from PHY (rnti %x, UE_id %d) ul_cqi %d\n",
	      enb_mod_idP, harq_pid, CC_idP,
	      UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid],
	      current_rnti, UE_id, ul_cqi);

	AssertFatal(UE_list->UE_sched_ctrl[UE_id].
		    round_UL[CC_idP][harq_pid] < 8, "round >= 8\n");
	if (sduP != NULL) {
	    UE_list->UE_sched_ctrl[UE_id].ul_inactivity_timer = 0;
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            if (UE_list->UE_sched_ctrl[UE_id].ul_failure_timer > 0) {
              LOG_I(MAC, "UE %d rnti %x: UL Failure timer %d clear to 0\n", UE_id, rntiP,
              UE_list->UE_sched_ctrl[UE_id].ul_failure_timer);
            }
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	    UE_list->UE_sched_ctrl[UE_id].ul_failure_timer = 0;
	    UE_list->UE_sched_ctrl[UE_id].ul_scheduled &=
		(~(1 << harq_pid));
	    /* Update with smoothing: 3/4 of old value and 1/4 of new.
	     * This is the logic that was done in the function
	     * lte_est_timing_advance_pusch, maybe it's not necessary?
	     * maybe it's even not correct at all?
	     */
	    UE_list->UE_sched_ctrl[UE_id].ta_update =
		(UE_list->UE_sched_ctrl[UE_id].ta_update * 3 +
		 timing_advance) / 4;
	    UE_list->UE_sched_ctrl[UE_id].pusch_snr[CC_idP] = ul_cqi;
	    UE_list->UE_sched_ctrl[UE_id].ul_consecutive_errors = 0;
	    first_rb =
		UE_list->UE_template[CC_idP][UE_id].first_rb_ul[harq_pid];

	    if (UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync > 0) {
		UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync = 0;
		mac_eNB_rrc_ul_in_sync(enb_mod_idP, CC_idP, frameP,
				       subframeP, UE_RNTI(enb_mod_idP,
							  UE_id));
	    }
	} else {		// we've got an error
	    LOG_D(MAC,
		  "[eNB %d][PUSCH %d] CC_id %d ULSCH in error in round %d, ul_cqi %d\n",
		  enb_mod_idP, harq_pid, CC_idP,
		  UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid],
		  ul_cqi);

	    //      AssertFatal(1==0,"ulsch in error\n");
	    if (UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid] ==
		3) {
		UE_list->UE_sched_ctrl[UE_id].ul_scheduled &=
		    (~(1 << harq_pid));
		UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid] =
		    0;
		if (UE_list->UE_sched_ctrl[UE_id].
		    ul_consecutive_errors++ == 10)
		    UE_list->UE_sched_ctrl[UE_id].ul_failure_timer = 1;
	    } else
		UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid]++;
	    return;

	}
    } else if ((RA_id = find_RA_id(enb_mod_idP, CC_idP, current_rnti)) != -1) {	// Check if this is an RA process for the rnti
	AssertFatal(mac->common_channels[CC_idP].
		    radioResourceConfigCommon->rach_ConfigCommon.
		    maxHARQ_Msg3Tx > 1,
		    "maxHARQ %d should be greater than 1\n",
		    (int) mac->common_channels[CC_idP].
		    radioResourceConfigCommon->rach_ConfigCommon.
		    maxHARQ_Msg3Tx);

	LOG_D(MAC,
	      "[eNB %d][PUSCH %d] CC_id %d Received ULSCH sdu round %d from PHY (rnti %x, RA_id %d) ul_cqi %d\n",
	      enb_mod_idP, harq_pid, CC_idP, ra[RA_id].msg3_round,
	      current_rnti, RA_id, ul_cqi);

	first_rb = ra->msg3_first_rb;

	if (sduP == NULL) {	// we've got an error on Msg3
	    LOG_D(MAC,
		  "[eNB %d] CC_id %d, RA %d ULSCH in error in round %d/%d\n",
		  enb_mod_idP, CC_idP, RA_id,
		  ra[RA_id].msg3_round,
		  (int) mac->common_channels[CC_idP].
		  radioResourceConfigCommon->rach_ConfigCommon.
		  maxHARQ_Msg3Tx);
	    if (ra[RA_id].msg3_round ==
		mac->common_channels[CC_idP].radioResourceConfigCommon->
		rach_ConfigCommon.maxHARQ_Msg3Tx - 1) {
		cancel_ra_proc(enb_mod_idP, CC_idP, frameP, current_rnti);
	    }

	    else {
		first_rb =
		    UE_list->UE_template[CC_idP][UE_id].
		    first_rb_ul[harq_pid];
		ra[RA_id].msg3_round++;
		// prepare handling of retransmission
		ra[RA_id].Msg3_frame +=
		    ((ra[RA_id].Msg3_subframe > 1) ? 1 : 0);
		ra[RA_id].Msg3_subframe =
		    (ra[RA_id].Msg3_subframe + 8) % 10;
		add_msg3(enb_mod_idP, CC_idP, &ra[RA_id], frameP,
			 subframeP);
	    }
	    return;
	}
    } else {
	LOG_W(MAC,
	      "Cannot find UE or RA corresponding to ULSCH rnti %x, dropping it\n",
	      current_rnti);
	return;
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    }
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    payload_ptr =
	parse_ulsch_header(sduP, &num_ce, &num_sdu, rx_ces, rx_lcids,
			   rx_lengths, sdu_lenP);

    T(T_ENB_MAC_UE_UL_PDU, T_INT(enb_mod_idP), T_INT(CC_idP),
      T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
      T_INT(harq_pid), T_INT(sdu_lenP), T_INT(num_ce), T_INT(num_sdu));
    T(T_ENB_MAC_UE_UL_PDU_WITH_DATA, T_INT(enb_mod_idP), T_INT(CC_idP),
      T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
      T_INT(harq_pid), T_INT(sdu_lenP), T_INT(num_ce), T_INT(num_sdu),
      T_BUFFER(sduP, sdu_lenP));

    mac->eNB_stats[CC_idP].ulsch_bytes_rx = sdu_lenP;
    mac->eNB_stats[CC_idP].total_ulsch_bytes_rx += sdu_lenP;
    mac->eNB_stats[CC_idP].total_ulsch_pdus_rx += 1;

    UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid] = 0;

    // control element
    for (i = 0; i < num_ce; i++) {

	T(T_ENB_MAC_UE_UL_CE, T_INT(enb_mod_idP), T_INT(CC_idP),
	  T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
	  T_INT(rx_ces[i]));

	switch (rx_ces[i]) {	// implement and process BSR + CRNTI +
	case POWER_HEADROOM:
	    if (UE_id != -1) {
		UE_list->UE_template[CC_idP][UE_id].phr_info =
		    (payload_ptr[0] & 0x3f) - PHR_MAPPING_OFFSET;
		LOG_D(MAC,
		      "[eNB %d] CC_id %d MAC CE_LCID %d : Received PHR PH = %d (db)\n",
		      enb_mod_idP, CC_idP, rx_ces[i],
		      UE_list->UE_template[CC_idP][UE_id].phr_info);
		UE_list->UE_template[CC_idP][UE_id].phr_info_configured =
		    1;
		UE_list->UE_sched_ctrl[UE_id].phr_received = 1;
	    }
	    payload_ptr += sizeof(POWER_HEADROOM_CMD);
	    break;

	case CRNTI:
	    {
		int old_rnti =
		    (((uint16_t) payload_ptr[0]) << 8) + payload_ptr[1];
		int old_UE_id = find_UE_id(enb_mod_idP, old_rnti);
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		LOG_I(MAC,
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		      "[eNB %d] Frame %d, Subframe %d CC_id %d MAC CE_LCID %d (ce %d/%d): CRNTI %x (UE_id %d) in Msg3\n",
		      enb_mod_idP, frameP, subframeP, CC_idP, rx_ces[i], i,
		      num_ce, old_rnti, old_UE_id);
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		/* receiving CRNTI means that the current rnti has to go away */
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		//cancel_ra_proc(enb_mod_idP, CC_idP, frameP,
		//	       current_rnti);
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		if (old_UE_id != -1) {
		    /* TODO: if the UE did random access (followed by a MAC uplink with
		     * CRNTI) because none of its scheduling request was granted, then
		     * according to 36.321 5.4.4 the UE's MAC will notify RRC to release
		     * PUCCH/SRS. According to 36.331 5.3.13 the UE will then apply
		     * default configuration for CQI reporting and scheduling requests,
		     * which basically means that the CQI requests won't work anymore and
		     * that the UE won't do any scheduling request anymore as long as the
		     * eNB doesn't reconfigure the UE.
		     * We have to take care of this. As the code is, nothing is done and
		     * the UE state in the eNB is wrong.
		     */
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          for (ii = 0; ii < NB_RA_PROC_MAX; ii++) {
            ra = &mac->common_channels[CC_idP].ra[ii];
            if ((ra->rnti == current_rnti) && (ra->state != IDLE)) {
                mac_rrc_data_ind(enb_mod_idP,
                                CC_idP,
                                frameP, subframeP,
                                old_rnti,
                                DCCH,
                                (uint8_t *) payload_ptr,
                                rx_lengths[i],
                                ENB_FLAG_YES, enb_mod_idP, 0);
                // prepare transmission of Msg4(RRCConnectionReconfiguration)
                ra->state = MSGCRNTI;
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                LOG_I(MAC,
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                     "[eNB %d] Frame %d, Subframe %d CC_id %d : (rnti %x UE_id %d) RRCConnectionReconfiguration(Msg4)\n",
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                     enb_mod_idP, frameP, subframeP, CC_idP, old_rnti, old_UE_id);
                //
                UE_id = old_UE_id;
                current_rnti = old_rnti;
                ra->rnti = old_rnti;
                ra->crnti_rrc_mui = rrc_eNB_mui-1;
                ra->crnti_harq_pid = -1;
                //clear timer
                UE_list->UE_sched_ctrl[UE_id].uplane_inactivity_timer = 0;
                UE_list->UE_sched_ctrl[UE_id].ul_inactivity_timer = 0;
                UE_list->UE_sched_ctrl[UE_id].ul_failure_timer = 0;
                if (UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync > 0) {
                  UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync = 0;
                  mac_eNB_rrc_ul_in_sync(enb_mod_idP, CC_idP, frameP,
                                         subframeP, old_rnti);
                }
                UE_list->UE_template[CC_idP][UE_id].ul_SR = 1;
                UE_list->UE_sched_ctrl[UE_id].crnti_reconfigurationcomplete_flag = 1;
                break;
              }
          }
        }else{
          cancel_ra_proc(enb_mod_idP, CC_idP, frameP,current_rnti);
        }
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		crnti_rx = 1;
		payload_ptr += 2;
		break;
	    }

	case TRUNCATED_BSR:
	case SHORT_BSR:
	    {
		uint8_t lcgid;
		lcgid = (payload_ptr[0] >> 6);

		LOG_D(MAC,
		      "[eNB %d] CC_id %d MAC CE_LCID %d : Received short BSR LCGID = %u bsr = %d\n",
		      enb_mod_idP, CC_idP, rx_ces[i], lcgid,
		      payload_ptr[0] & 0x3f);

		if (crnti_rx == 1)
		    LOG_D(MAC,
			  "[eNB %d] CC_id %d MAC CE_LCID %d : Received short BSR LCGID = %u bsr = %d\n",
			  enb_mod_idP, CC_idP, rx_ces[i], lcgid,
			  payload_ptr[0] & 0x3f);
		if (UE_id != -1) {

		    UE_list->UE_template[CC_idP][UE_id].bsr_info[lcgid] =
			(payload_ptr[0] & 0x3f);

		    // update buffer info

		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_info[lcgid] =
			BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].
				  bsr_info[lcgid]];

		    UE_list->UE_template[CC_idP][UE_id].ul_total_buffer =
			UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_info[lcgid];

		    RC.eNB[enb_mod_idP][CC_idP]->
			pusch_stats_bsr[UE_id][(frameP * 10) + subframeP]
			= (payload_ptr[0] & 0x3f);
		    if (UE_id == UE_list->head)
			VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME
			    (VCD_SIGNAL_DUMPER_VARIABLES_UE0_BSR,
			     RC.eNB[enb_mod_idP][CC_idP]->pusch_stats_bsr
			     [UE_id][(frameP * 10) + subframeP]);
		    if (UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_creation_time[lcgid]
			== 0) {
			UE_list->UE_template[CC_idP]
			    [UE_id].ul_buffer_creation_time[lcgid] =
			    frameP;
		    }
		    if (mac_eNB_get_rrc_status
			(enb_mod_idP,
			 UE_RNTI(enb_mod_idP, UE_id)) < RRC_CONNECTED)
			LOG_D(MAC,
			      "[eNB %d] CC_id %d MAC CE_LCID %d : ul_total_buffer = %d (lcg increment %d)\n",
			      enb_mod_idP, CC_idP, rx_ces[i],
			      UE_list->UE_template[CC_idP][UE_id].
			      ul_total_buffer,
			      UE_list->UE_template[CC_idP][UE_id].
			      ul_buffer_info[lcgid]);
		} else {

		}
		payload_ptr += 1;	//sizeof(SHORT_BSR); // fixme
	    }
	    break;

	case LONG_BSR:
	    if (UE_id != -1) {
		UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0] =
		    ((payload_ptr[0] & 0xFC) >> 2);
		UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1] =
		    ((payload_ptr[0] & 0x03) << 4) |
		    ((payload_ptr[1] & 0xF0) >> 4);
		UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2] =
		    ((payload_ptr[1] & 0x0F) << 2) |
		    ((payload_ptr[2] & 0xC0) >> 6);
		UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3] =
		    (payload_ptr[2] & 0x3F);

		// update buffer info
		old_buffer_info =
		    UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID0];
		UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID0] =
		    BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].
			      bsr_info[LCGID0]];

		UE_list->UE_template[CC_idP][UE_id].ul_total_buffer +=
		    UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID0];
		if (UE_list->UE_template[CC_idP][UE_id].ul_total_buffer >=
		    old_buffer_info)
		    UE_list->UE_template[CC_idP][UE_id].ul_total_buffer -=
			old_buffer_info;
		else
		    UE_list->UE_template[CC_idP][UE_id].ul_total_buffer =
			0;

		old_buffer_info =
		    UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID1];
		UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID1] =
		    BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].
			      bsr_info[LCGID1]];
		UE_list->UE_template[CC_idP][UE_id].ul_total_buffer +=
		    UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID1];
		if (UE_list->UE_template[CC_idP][UE_id].ul_total_buffer >=
		    old_buffer_info)
		    UE_list->UE_template[CC_idP][UE_id].ul_total_buffer -=
			old_buffer_info;
		else
		    UE_list->UE_template[CC_idP][UE_id].ul_total_buffer =
			0;

		old_buffer_info =
		    UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID2];
		UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID2] =
		    BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].
			      bsr_info[LCGID2]];
		UE_list->UE_template[CC_idP][UE_id].ul_total_buffer +=
		    UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID2];
		if (UE_list->UE_template[CC_idP][UE_id].ul_total_buffer >=
		    old_buffer_info)
		    UE_list->UE_template[CC_idP][UE_id].ul_total_buffer -=
			old_buffer_info;
		else
		    UE_list->UE_template[CC_idP][UE_id].ul_total_buffer =
			0;

		old_buffer_info =
		    UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID3];
		UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID3] =
		    BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].
			      bsr_info[LCGID3]];
		UE_list->UE_template[CC_idP][UE_id].ul_total_buffer +=
		    UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[LCGID3];
		if (UE_list->UE_template[CC_idP][UE_id].ul_total_buffer >=
		    old_buffer_info)
		    UE_list->UE_template[CC_idP][UE_id].ul_total_buffer -=
			old_buffer_info;
		else
		    UE_list->UE_template[CC_idP][UE_id].ul_total_buffer =
			0;

		LOG_D(MAC,
		      "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR LCGID0 = %u LCGID1 = "
		      "%u LCGID2 = %u LCGID3 = %u\n", enb_mod_idP, CC_idP,
		      rx_ces[i],
		      UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0],
		      UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1],
		      UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2],
		      UE_list->UE_template[CC_idP][UE_id].
		      bsr_info[LCGID3]);
		if (crnti_rx == 1)
		    LOG_D(MAC,
			  "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR LCGID0 = %u LCGID1 = "
			  "%u LCGID2 = %u LCGID3 = %u\n", enb_mod_idP,
			  CC_idP, rx_ces[i],
			  UE_list->UE_template[CC_idP][UE_id].
			  bsr_info[LCGID0],
			  UE_list->UE_template[CC_idP][UE_id].
			  bsr_info[LCGID1],
			  UE_list->UE_template[CC_idP][UE_id].
			  bsr_info[LCGID2],
			  UE_list->UE_template[CC_idP][UE_id].
			  bsr_info[LCGID3]);

		if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0] ==
		    0) {
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_creation_time[LCGID0] = 0;
		} else if (UE_list->UE_template[CC_idP]
			   [UE_id].ul_buffer_creation_time[LCGID0] == 0) {
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_creation_time[LCGID0] = frameP;
		}

		if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1] ==
		    0) {
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_creation_time[LCGID1] = 0;
		} else if (UE_list->UE_template[CC_idP]
			   [UE_id].ul_buffer_creation_time[LCGID1] == 0) {
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_creation_time[LCGID1] = frameP;
		}

		if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2] ==
		    0) {
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_creation_time[LCGID2] = 0;
		} else if (UE_list->UE_template[CC_idP]
			   [UE_id].ul_buffer_creation_time[LCGID2] == 0) {
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_creation_time[LCGID2] = frameP;
		}

		if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3] ==
		    0) {
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_creation_time[LCGID3] = 0;
		} else if (UE_list->UE_template[CC_idP]
			   [UE_id].ul_buffer_creation_time[LCGID3] == 0) {
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_creation_time[LCGID3] = frameP;

		}
	    }

	    payload_ptr += 3;	////sizeof(LONG_BSR);
	    break;

	default:
	    LOG_E(MAC,
		  "[eNB %d] CC_id %d Received unknown MAC header (0x%02x)\n",
		  enb_mod_idP, CC_idP, rx_ces[i]);
	    break;
	}
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    }
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    for (i = 0; i < num_sdu; i++) {
	LOG_D(MAC, "SDU Number %d MAC Subheader SDU_LCID %d, length %d\n",
	      i, rx_lcids[i], rx_lengths[i]);

	T(T_ENB_MAC_UE_UL_SDU, T_INT(enb_mod_idP), T_INT(CC_idP),
	  T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
	  T_INT(rx_lcids[i]), T_INT(rx_lengths[i]));
	T(T_ENB_MAC_UE_UL_SDU_WITH_DATA, T_INT(enb_mod_idP), T_INT(CC_idP),
	  T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
	  T_INT(rx_lcids[i]), T_INT(rx_lengths[i]), T_BUFFER(payload_ptr,
							     rx_lengths
							     [i]));

	switch (rx_lcids[i]) {
	case CCCH:
	    if (rx_lengths[i] > CCCH_PAYLOAD_SIZE_MAX) {
		LOG_E(MAC,
		      "[eNB %d/%d] frame %d received CCCH of size %d (too big, maximum allowed is %d, sdu_len %d), dropping packet\n",
		      enb_mod_idP, CC_idP, frameP, rx_lengths[i],
		      CCCH_PAYLOAD_SIZE_MAX, sdu_lenP);
		break;
	    }
	    LOG_D(MAC,
		  "[eNB %d][RAPROC] CC_id %d Frame %d, Received CCCH:  %x.%x.%x.%x.%x.%x, Terminating RA procedure for UE rnti %x\n",
		  enb_mod_idP, CC_idP, frameP, payload_ptr[0],
		  payload_ptr[1], payload_ptr[2], payload_ptr[3],
		  payload_ptr[4], payload_ptr[5], current_rnti);
	    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
		(VCD_SIGNAL_DUMPER_FUNCTIONS_TERMINATE_RA_PROC, 1);
	    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
		(VCD_SIGNAL_DUMPER_FUNCTIONS_TERMINATE_RA_PROC, 0);
	    for (ii = 0; ii < NB_RA_PROC_MAX; ii++) {
		RA_t *ra = &mac->common_channels[CC_idP].ra[ii];

		LOG_D(MAC,
		      "[mac %d][RAPROC] CC_id %d Checking proc %d : rnti (%x, %x), state %d\n",
		      enb_mod_idP, CC_idP, ii, ra->rnti,
		      current_rnti, ra->state);

		if ((ra->rnti == current_rnti) && (ra->state != IDLE)) {

		    //payload_ptr = parse_ulsch_header(msg3,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,msg3_len);

		    if (UE_id < 0) {
			memcpy(&ra->cont_res_id[0], payload_ptr, 6);
			LOG_D(MAC,
			      "[eNB %d][RAPROC] CC_id %d Frame %d CCCH: Received Msg3: length %d, offset %ld\n",
			      enb_mod_idP, CC_idP, frameP, rx_lengths[i],
			      payload_ptr - sduP);

			if ((UE_id =
			     add_new_ue(enb_mod_idP, CC_idP,
					mac->common_channels[CC_idP].
					ra[ii].rnti, harq_pid
#ifdef Rel14
					,
					mac->common_channels[CC_idP].
					ra[ii].rach_resource_type
#endif
			     )) == -1) {
			    AssertFatal(1 == 0,
					"[MAC][eNB] Max user count reached\n");
			    // kill RA procedure
			} else
			    LOG_D(MAC,
				  "[eNB %d][RAPROC] CC_id %d Frame %d Added user with rnti %x => UE %d\n",
				  enb_mod_idP, CC_idP, frameP, ra->rnti,
				  UE_id);
		    } else {
			LOG_D(MAC,
			      "[eNB %d][RAPROC] CC_id %d Frame %d CCCH: Received Msg3 from already registered UE %d: length %d, offset %ld\n",
			      enb_mod_idP, CC_idP, frameP, UE_id,
			      rx_lengths[i], payload_ptr - sduP);
			// kill RA procedure
		    }

		    mac_rrc_data_ind(enb_mod_idP,
				     CC_idP,
				     frameP, subframeP,
				     current_rnti,
				     CCCH,
				     (uint8_t *) payload_ptr,
				     rx_lengths[i],
				     ENB_FLAG_YES, enb_mod_idP, 0);


		    if (num_ce > 0) {	// handle msg3 which is not RRCConnectionRequest
			//  process_ra_message(msg3,num_ce,rx_lcids,rx_ces);
		    }
		    // prepare transmission of Msg4
		    ra->state = MSG4;



		    // Program Msg4 PDCCH+DLSCH/MPDCCH transmission 4 subframes from now, // Check if this is ok for BL/CE, or if the rule is different
		    ra->Msg4_frame = frameP + ((subframeP > 5) ? 1 : 0);
		    ra->Msg4_subframe = (subframeP + 4) % 10;
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                    UE_list->UE_sched_ctrl[UE_id].crnti_reconfigurationcomplete_flag = 0;
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		}		// if process is active
	    }			// loop on RA processes

	    break;

	case DCCH:
	case DCCH1:
	    //      if(eNB_mac_inst[module_idP][CC_idP].Dcch_lchan[UE_id].Active==1){
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#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
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	    LOG_T(MAC, "offset: %d\n",
		  (unsigned char) ((unsigned char *) payload_ptr - sduP));
	    for (j = 0; j < 32; j++) {
		LOG_T(MAC, "%x ", payload_ptr[j]);
	    }
	    LOG_T(MAC, "\n");
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#endif
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	    if (UE_id != -1) {
		// adjust buffer occupancy of the correponding logical channel group
		if (UE_list->UE_template[CC_idP][UE_id].
		    ul_buffer_info[UE_list->UE_template[CC_idP]
				   [UE_id].lcgidmap[rx_lcids[i]]] >=
		    rx_lengths[i])
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_info[UE_list->UE_template[CC_idP]
				       [UE_id].lcgidmap[rx_lcids[i]]] -=
			rx_lengths[i];
		else
		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_info[UE_list->UE_template[CC_idP]
				       [UE_id].lcgidmap[rx_lcids[i]]] = 0;

		LOG_D(MAC,
		      "[eNB %d] CC_id %d Frame %d : ULSCH -> UL-DCCH, received %d bytes form UE %d on LCID %d \n",
		      enb_mod_idP, CC_idP, frameP, rx_lengths[i], UE_id,
		      rx_lcids[i]);

		mac_rlc_data_ind(enb_mod_idP, current_rnti, enb_mod_idP, frameP, ENB_FLAG_YES, MBMS_FLAG_NO, rx_lcids[i], (char *) payload_ptr, rx_lengths[i], 1, NULL);	//(unsigned int*)crc_status);
		UE_list->eNB_UE_stats[CC_idP][UE_id].
		    num_pdu_rx[rx_lcids[i]] += 1;
		UE_list->eNB_UE_stats[CC_idP][UE_id].
		    num_bytes_rx[rx_lcids[i]]
		    += rx_lengths[i];


	    }

	    /* UE_id != -1 */
	    // }
	    break;

	    // all the DRBS
	case DTCH:
	default:
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#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
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	    LOG_T(MAC, "offset: %d\n",
		  (unsigned char) ((unsigned char *) payload_ptr - sduP));
	    for (j = 0; j < 32; j++) {
		LOG_T(MAC, "%x ", payload_ptr[j]);
	    }
	    LOG_T(MAC, "\n");
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#endif
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	    if (rx_lcids[i] < NB_RB_MAX) {
		LOG_D(MAC,
		      "[eNB %d] CC_id %d Frame %d : ULSCH -> UL-DTCH, received %d bytes from UE %d for lcid %d\n",
		      enb_mod_idP, CC_idP, frameP, rx_lengths[i], UE_id,
		      rx_lcids[i]);

		if (UE_id != -1) {
		    // adjust buffer occupancy of the correponding logical channel group
		    LOG_D(MAC,
			  "[eNB %d] CC_id %d Frame %d : ULSCH -> UL-DTCH, received %d bytes from UE %d for lcid %d, removing from LCGID %ld, %d\n",
			  enb_mod_idP, CC_idP, frameP, rx_lengths[i],
			  UE_id, rx_lcids[i],
			  UE_list->UE_template[CC_idP][UE_id].
			  lcgidmap[rx_lcids[i]],
			  UE_list->UE_template[CC_idP][UE_id].
			  ul_buffer_info[UE_list->UE_template[CC_idP]
					 [UE_id].lcgidmap[rx_lcids[i]]]);

		    if (UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_info[UE_list->UE_template[CC_idP]
				       [UE_id].lcgidmap[rx_lcids[i]]]
			>= rx_lengths[i])
			UE_list->UE_template[CC_idP][UE_id].
			    ul_buffer_info[UE_list->UE_template[CC_idP]
					   [UE_id].lcgidmap[rx_lcids[i]]]
			    -= rx_lengths[i];
		    else
			UE_list->UE_template[CC_idP][UE_id].ul_buffer_info
			    [UE_list->UE_template[CC_idP][UE_id].lcgidmap
			     [rx_lcids[i]]] = 0;
		    if ((rx_lengths[i] < SCH_PAYLOAD_SIZE_MAX)
			&& (rx_lengths[i] > 0)) {	// MAX SIZE OF transport block
			mac_rlc_data_ind(enb_mod_idP, current_rnti, enb_mod_idP, frameP, ENB_FLAG_YES, MBMS_FLAG_NO, rx_lcids[i], (char *) payload_ptr, rx_lengths[i], 1, NULL);	//(unsigned int*)crc_status);

			UE_list->eNB_UE_stats[CC_idP][UE_id].
			    num_pdu_rx[rx_lcids[i]] += 1;
			UE_list->eNB_UE_stats[CC_idP][UE_id].
			    num_bytes_rx[rx_lcids[i]] += rx_lengths[i];
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                        //clear uplane_inactivity_timer
	                UE_list->UE_sched_ctrl[UE_id].uplane_inactivity_timer = 0;
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		    } else {	/* rx_length[i] */
			UE_list->eNB_UE_stats[CC_idP][UE_id].
			    num_errors_rx += 1;
			LOG_E(MAC,
			      "[eNB %d] CC_id %d Frame %d : Max size of transport block reached LCID %d from UE %d ",
			      enb_mod_idP, CC_idP, frameP, rx_lcids[i],
			      UE_id);
		    }
		} else {	/*(UE_id != -1 */
		    LOG_E(MAC,
			  "[eNB %d] CC_id %d Frame %d : received unsupported or unknown LCID %d from UE %d ",
			  enb_mod_idP, CC_idP, frameP, rx_lcids[i], UE_id);
		}
	    }

	    break;
	}

	payload_ptr += rx_lengths[i];
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    }
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    // Program ACK for PHICH
    LOG_D(MAC,
	  "Programming PHICH ACK for rnti %x harq_pid %d (first_rb %d)\n",
	  current_rnti, harq_pid, first_rb);
    nfapi_hi_dci0_request_body_t *hi_dci0_req =
	&mac->HI_DCI0_req[CC_idP].hi_dci0_request_body;
    nfapi_hi_dci0_request_pdu_t *hi_dci0_pdu =
	&hi_dci0_req->hi_dci0_pdu_list[hi_dci0_req->number_of_dci +
				       hi_dci0_req->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.resource_block_start = 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 = 1;
    hi_dci0_req->number_of_hi++;

    /* NN--> FK: we could either check the payload, or use a phy helper to detect a false msg3 */
    if ((num_sdu == 0) && (num_ce == 0)) {
	if (UE_id != -1)
	    UE_list->eNB_UE_stats[CC_idP][UE_id].total_num_errors_rx += 1;
	/*
	   if (msg3_flagP != NULL) {
	   if( *msg3_flagP == 1 ) {
	   LOG_N(MAC,"[eNB %d] CC_id %d frame %d : false msg3 detection: signal phy to canceling RA and remove the UE\n", enb_mod_idP, CC_idP, frameP);
	   *msg3_flagP=0;
	   }
	   } */
    } else {
	if (UE_id != -1) {
	    UE_list->eNB_UE_stats[CC_idP][UE_id].pdu_bytes_rx = sdu_lenP;
	    UE_list->eNB_UE_stats[CC_idP][UE_id].total_pdu_bytes_rx +=
		sdu_lenP;
	    UE_list->eNB_UE_stats[CC_idP][UE_id].total_num_pdus_rx += 1;
	}
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    }
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    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_RX_SDU, 0);
    stop_meas(&mac->rx_ulsch_sdu);
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}

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uint32_t bytes_to_bsr_index(int32_t nbytes)
{
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    uint32_t i = 0;
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    if (nbytes < 0) {
	return (0);
    }
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    while ((i < BSR_TABLE_SIZE) && (BSR_TABLE[i] <= nbytes)) {
	i++;
    }
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    return (i - 1);
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}

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void
add_ue_ulsch_info(module_id_t module_idP, int CC_id, int UE_id,
		  sub_frame_t subframeP, UE_ULSCH_STATUS status)
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{
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    eNB_ulsch_info[module_idP][CC_id][UE_id].rnti =
	UE_RNTI(module_idP, UE_id);
    eNB_ulsch_info[module_idP][CC_id][UE_id].subframe = subframeP;
    eNB_ulsch_info[module_idP][CC_id][UE_id].status = status;
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    eNB_ulsch_info[module_idP][CC_id][UE_id].serving_num++;
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}

unsigned char *parse_ulsch_header(unsigned char *mac_header,
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				  unsigned char *num_ce,
				  unsigned char *num_sdu,
				  unsigned char *rx_ces,
				  unsigned char *rx_lcids,
				  unsigned short *rx_lengths,
				  unsigned short tb_length)
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{
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    unsigned char not_done = 1, num_ces = 0, num_sdus =
	0, lcid, num_sdu_cnt;
    unsigned char *mac_header_ptr = mac_header;
    unsigned short length, ce_len = 0;

    while (not_done == 1) {

	if (((SCH_SUBHEADER_FIXED *) mac_header_ptr)->E == 0) {
	    not_done = 0;
	}

	lcid = ((SCH_SUBHEADER_FIXED *) mac_header_ptr)->LCID;

	if (lcid < EXTENDED_POWER_HEADROOM) {
	    if (not_done == 0) {	// last MAC SDU, length is implicit
		mac_header_ptr++;
		length =
		    tb_length - (mac_header_ptr - mac_header) - ce_len;

		for (num_sdu_cnt = 0; num_sdu_cnt < num_sdus;
		     num_sdu_cnt++) {
		    length -= rx_lengths[num_sdu_cnt];
		}
	    } else {
		if (((SCH_SUBHEADER_SHORT *) mac_header_ptr)->F == 0) {
		    length = ((SCH_SUBHEADER_SHORT *) mac_header_ptr)->L;
		    mac_header_ptr += 2;	//sizeof(SCH_SUBHEADER_SHORT);
		} else {	// F = 1
		    length =
			((((SCH_SUBHEADER_LONG *) mac_header_ptr)->L_MSB &
			  0x7f) << 8) | (((SCH_SUBHEADER_LONG *)
					  mac_header_ptr)->L_LSB & 0xff);
		    mac_header_ptr += 3;	//sizeof(SCH_SUBHEADER_LONG);
		}
	    }

	    LOG_D(MAC,
		  "[eNB] sdu %d lcid %d tb_length %d length %d (offset now %ld)\n",
		  num_sdus, lcid, tb_length, length,
		  mac_header_ptr - mac_header);
	    rx_lcids[num_sdus] = lcid;
	    rx_lengths[num_sdus] = length;
	    num_sdus++;
	} else {		// This is a control element subheader POWER_HEADROOM, BSR and CRNTI
	    if (lcid == SHORT_PADDING) {
		mac_header_ptr++;
	    } else {
		rx_ces[num_ces] = lcid;
		num_ces++;
		mac_header_ptr++;

		if (lcid == LONG_BSR) {
		    ce_len += 3;
		} else if (lcid == CRNTI) {
		    ce_len += 2;
		} else if ((lcid == POWER_HEADROOM)
			   || (lcid == TRUNCATED_BSR)
			   || (lcid == SHORT_BSR)) {
		    ce_len++;
		} else {
		    LOG_E(MAC, "unknown CE %d \n", lcid);
		    AssertFatal(1 == 0, "unknown CE");
		}
	    }
	}
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    }
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    *num_ce = num_ces;
    *num_sdu = num_sdus;
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    return (mac_header_ptr);
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}

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/* This function is called by PHY layer when it schedules some
 * uplink for a random access message 3.
 * The MAC scheduler has to skip the RBs used by this message 3
 * (done below in schedule_ulsch).
 */
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void
set_msg3_subframe(module_id_t Mod_id,
		  int CC_id,
		  int frame,
		  int subframe, int rnti, int Msg3_frame,
		  int Msg3_subframe)
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{
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    eNB_MAC_INST *mac = RC.mac[Mod_id];
    int i;
    for (i = 0; i < NB_RA_PROC_MAX; i++) {
	if (mac->common_channels[CC_id].ra[i].state != IDLE &&
	    mac->common_channels[CC_id].ra[i].rnti == rnti) {
	    mac->common_channels[CC_id].ra[i].Msg3_subframe =
		Msg3_subframe;
	    break;
	}
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    }
}
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void
schedule_ulsch(module_id_t module_idP, frame_t frameP,
	       sub_frame_t subframeP)
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{
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#ifndef UE_EXPANSION
  uint16_t first_rb[MAX_NUM_CCs];
#endif
  uint16_t i;
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  int CC_id;
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  eNB_MAC_INST *mac = RC.mac[module_idP];
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  COMMON_channels_t *cc;
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  int sched_frame=frameP;
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  start_meas(&mac->schedule_ulsch);
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  int sched_subframe = (subframeP+4)%10;
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  if (sched_subframe < subframeP) sched_frame++;
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  cc = &mac->common_channels[0];
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  int tdd_sfa;
  // for TDD: check subframes where we have to act and return if nothing should be done now
  if (cc->tdd_Config) {
    tdd_sfa = cc->tdd_Config->subframeAssignment;
    switch (subframeP) {
    case 0:
      if ((tdd_sfa == 0)||
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          (tdd_sfa == 3)||
          (tdd_sfa == 6)) sched_subframe = 4;
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      else return;
      break;
    case 1:
      if ((tdd_sfa==0)||
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          (tdd_sfa==1)) sched_subframe = 7;
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      else if (tdd_sfa==6) sched_subframe = 8;
      break;
    default:
      return;

    case 2: // Don't schedule UL in subframe 2 for TDD
      return;
    case 3:
      if (tdd_sfa==2) sched_subframe = 7;
      else return;
      break;
    case 4:
      if (tdd_sfa==1) sched_subframe = 8;
      else return;
      break;
    case 5:
      if (tdd_sfa==0)      sched_subframe = 9;
      else if (tdd_sfa==6) sched_subframe = 3;
      else return;
      break;
    case 6:
      if (tdd_sfa==1)      sched_subframe = 2;
      else if (tdd_sfa==6) sched_subframe = 3;
      else return;
      break;
    case 7:
      return;
    case 8:
      if ((tdd_sfa>=2) || (tdd_sfa<=5)) sched_subframe=2;
      else return;
      break;
    case 9:
      if ((tdd_sfa==1) || (tdd_sfa==3) || (tdd_sfa==4)) sched_subframe=3;
      else if (tdd_sfa==6) sched_subframe=4;
      else return;
      break;
    }
  }
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#ifndef UE_EXPANSION
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  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
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	//leave out first RB for PUCCH
	first_rb[CC_id] = 1;
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	// UE data info;
	// check which UE has data to transmit
	// function to decide the scheduling
	// e.g. scheduling_rslt = Greedy(granted_UEs, nb_RB)
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	// default function for default scheduling
	//
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	// output of scheduling, the UE numbers in RBs, where it is in the code???
	// check if RA (Msg3) is active in this subframeP, if so skip the PRBs used for Msg3
	// Msg3 is using 1 PRB so we need to increase first_rb accordingly
	// not sure about the break (can there be more than 1 active RA procedure?)
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	for (i = 0; i < NB_RA_PROC_MAX; i++) {
	    if ((cc->ra[i].state == WAITMSG3) &&
		(cc->ra[i].Msg3_subframe == sched_subframe)) {
		first_rb[CC_id]++;
		//    cc->ray[i].Msg3_subframe = -1;
		break;
	    }
	}
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    }
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  schedule_ulsch_rnti(module_idP, frameP, subframeP, sched_subframe,first_rb);
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#else
  ULSCH_UE_SELECT ulsch_ue_select[MAX_NUM_CCs];
  memset(ulsch_ue_select, 0, sizeof(ulsch_ue_select));

  LTE_DL_FRAME_PARMS *frame_parms ;

  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
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    cc = &mac->common_channels[CC_id];
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    frame_parms= &RC.eNB[module_idP][CC_id]->frame_parms;
    // output of scheduling, the UE numbers in RBs, where it is in the code???
    // check if RA (Msg3) is active in this subframeP, if so skip the PRBs used for Msg3
    // Msg3 is using 1 PRB so we need to increase first_rb accordingly
    // not sure about the break (can there be more than 1 active RA procedure?)
    for (i=0; i<NB_RA_PROC_MAX; i++) {
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      if ((cc->ra[i].state == WAITMSG3) &&(cc->ra[i].Msg3_subframe == sched_subframe)) {  
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        ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].ue_priority = SCH_UL_MSG3;
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        if(frame_parms->N_RB_UL == 25){
          ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].start_rb = 1;
        }else{
          ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].start_rb = 2;
        }
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        ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].nb_rb = 1;
        ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].UE_id = -1;
        ulsch_ue_select[CC_id].ue_num++;
        break;
      }
    }
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    //PRACH
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    if (is_prach_subframe(frame_parms,sched_frame,sched_subframe)==1) {
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      ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].ue_priority = SCH_UL_PRACH;
      ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].start_rb = get_prach_prb_offset(
    		                                                                 frame_parms,
    		                                                                 frame_parms->prach_config_common.prach_ConfigInfo.prach_ConfigIndex,
    		                                                                 frame_parms->prach_config_common.prach_ConfigInfo.prach_FreqOffset,
    		                                                                 0,//tdd_mapindex
    		                                                                 frameP); //Nf
      ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].nb_rb = 6;
      ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].UE_id = -1;
      ulsch_ue_select[CC_id].ue_num++;
    }
  }

  schedule_ulsch_rnti(module_idP, frameP, subframeP, sched_subframe,ulsch_ue_select);
#endif
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  stop_meas(&mac->schedule_ulsch);
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}
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#ifndef UE_EXPANSION
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void
schedule_ulsch_rnti(module_id_t module_idP,
		    frame_t frameP,
		    sub_frame_t subframeP,
		    unsigned char sched_subframeP, uint16_t * first_rb)
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{
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    int UE_id;
    uint8_t aggregation = 2;
    rnti_t rnti = -1;
    uint8_t round = 0;
    uint8_t harq_pid = 0;
    uint8_t status = 0;
    uint8_t rb_table_index = -1;
    uint32_t cqi_req, cshift, ndi, tpc;
    int32_t normalized_rx_power;
    int32_t target_rx_power = -90;
    static int32_t tpc_accumulated = 0;
    int n;
    int CC_id = 0;
    int drop_ue = 0;
    int N_RB_UL;
    eNB_MAC_INST *mac = RC.mac[module_idP];
    COMMON_channels_t *cc = mac->common_channels;
    UE_list_t *UE_list = &mac->UE_list;
    UE_TEMPLATE *UE_template;
    UE_sched_ctrl *UE_sched_ctrl;
    int sched_frame = frameP;
    int rvidx_tab[4] = { 0, 2, 3, 1 };

    if (sched_subframeP < subframeP)
	sched_frame++;

    nfapi_hi_dci0_request_body_t *hi_dci0_req =
	&mac->HI_DCI0_req[CC_id].hi_dci0_request_body;
    nfapi_hi_dci0_request_pdu_t *hi_dci0_pdu;

    nfapi_ul_config_request_body_t *ul_req_tmp =
	&mac->UL_req_tmp[CC_id][sched_subframeP].ul_config_request_body;

    LOG_D(MAC, "entering ulsch preprocesor\n");
    ulsch_scheduler_pre_processor(module_idP, frameP, subframeP, first_rb);

    LOG_D(MAC, "exiting ulsch preprocesor\n");

    mac->HI_DCI0_req[CC_id].sfn_sf = (frameP << 4) + subframeP;

    // loop over all active UEs
    for (UE_id = UE_list->head_ul; UE_id >= 0;
	 UE_id = UE_list->next_ul[UE_id]) {

	// don't schedule if Msg4 is not received yet
	if (UE_list->UE_template[UE_PCCID(module_idP, UE_id)][UE_id].
	    configured == FALSE) {
	    LOG_D(MAC,
		  "[eNB %d] frame %d subfarme %d, UE %d: not configured, skipping UE scheduling \n",
		  module_idP, frameP, subframeP, UE_id);
	    continue;
	}

	rnti = UE_RNTI(module_idP, UE_id);

	if (rnti == NOT_A_RNTI) {
	    LOG_W(MAC, "[eNB %d] frame %d subfarme %d, UE %d: no RNTI \n",
		  module_idP, frameP, subframeP, UE_id);
	    continue;
	}

	drop_ue = 0;
	/* let's drop the UE if get_eNB_UE_stats returns NULL when calling it with any of the UE's active UL CCs */
	/* TODO: refine?

	   for (n=0; n<UE_list->numactiveULCCs[UE_id]; n++) {
	   CC_id = UE_list->ordered_ULCCids[n][UE_id];

	   if (mac_xface->get_eNB_UE_stats(module_idP,CC_id,rnti) == NULL) {
	   LOG_W(MAC,"[eNB %d] frame %d subframe %d, UE %d/%x CC %d: no PHY context\n", module_idP,frameP,subframeP,UE_id,rnti,CC_id);
	   drop_ue = 1;
	   break;
	   }
	   } */
	if (drop_ue == 1) {
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/* we can't come here, ulsch_scheduler_pre_processor won't put in the list a UE with no PHY context */
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	    abort();
	    /* TODO: this is a hack. Sometimes the UE has no PHY context but
	     * is still present in the MAC with 'ul_failure_timer' = 0 and
	     * 'ul_out_of_sync' = 0. It seems wrong and the UE stays there forever. Let's
	     * start an UL out of sync procedure in this case.
	     * The root cause of this problem has to be found and corrected.
	     * In the meantime, this hack...
	     */
	    if (UE_list->UE_sched_ctrl[UE_id].ul_failure_timer == 0 &&
		UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync == 0) {
		LOG_W(MAC,
		      "[eNB %d] frame %d subframe %d, UE %d/%x CC %d: UE in weird state, let's put it 'out of sync'\n",
		      module_idP, frameP, subframeP, UE_id, rnti, CC_id);
		// inform RRC of failure and clear timer
		mac_eNB_rrc_ul_failure(module_idP, CC_id, frameP,
				       subframeP, rnti);
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                if (UE_list->UE_sched_ctrl[UE_id].ul_failure_timer > 0) {
                  LOG_I(MAC, "UE %d rnti %x: UL Failure timer %d clear to 0\n", UE_id, rnti,
                  UE_list->UE_sched_ctrl[UE_id].ul_failure_timer);
                }
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		UE_list->UE_sched_ctrl[UE_id].ul_failure_timer = 0;
		UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync = 1;
	    }
	    continue;
	}
	// loop over all active UL CC_ids for this UE
	for (n = 0; n < UE_list->numactiveULCCs[UE_id]; n++) {
	    // This is the actual CC_id in the list
	    CC_id = UE_list->ordered_ULCCids[n][UE_id];
	    N_RB_UL = to_prb(cc[CC_id].ul_Bandwidth);

	    /*
	       aggregation=get_aggregation(get_bw_index(module_idP,CC_id),
	       eNB_UE_stats->dl_cqi,
	       format0);
	     */

	    if (CCE_allocation_infeasible
		(module_idP, CC_id, 1, subframeP, aggregation, rnti)) {
		LOG_W(MAC,
		      "[eNB %d] frame %d subframe %d, UE %d/%x CC %d: not enough nCCE\n",
		      module_idP, frameP, subframeP, UE_id, rnti, CC_id);
		continue;	// break;
	    }

	    /* be sure that there are some free RBs */
	    if (first_rb[CC_id] >= N_RB_UL - 1) {
		LOG_W(MAC,
		      "[eNB %d] frame %d subframe %d, UE %d/%x CC %d: dropping, not enough RBs\n",
		      module_idP, frameP, subframeP, UE_id, rnti, CC_id);
		continue;
	    }
	    //      if (eNB_UE_stats->mode == PUSCH) { // ue has a ulsch channel

	    UE_template = &UE_list->UE_template[CC_id][UE_id];
	    UE_sched_ctrl = &UE_list->UE_sched_ctrl[UE_id];
	    harq_pid =
		subframe2harqpid(&cc[CC_id], sched_frame, sched_subframeP);
	    round = UE_sched_ctrl->round_UL[CC_id][harq_pid];
	    AssertFatal(round < 8, "round %d > 7 for UE %d/%x\n", round,
			UE_id, rnti);
	    LOG_D(MAC,
		  "[eNB %d] frame %d subframe %d,Checking PUSCH %d for UE %d/%x CC %d : aggregation level %d, N_RB_UL %d\n",
		  module_idP, frameP, subframeP, harq_pid, UE_id, rnti,
		  CC_id, aggregation, N_RB_UL);

	    RC.eNB[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP *
							      10) +
							     subframeP] =
		UE_template->ul_total_buffer;
	    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME
		(VCD_SIGNAL_DUMPER_VARIABLES_UE0_BO,
		 RC.eNB[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP *
								   10) +
								  subframeP]);
	    if (UE_is_to_be_scheduled(module_idP, CC_id, UE_id) > 0 || round > 0)	// || ((frameP%10)==0))
		// if there is information on bsr of DCCH, DTCH or if there is UL_SR, or if there is a packet to retransmit, or we want to schedule a periodic feedback every 10 frames
	    {
		LOG_D(MAC,
		      "[eNB %d][PUSCH %d] Frame %d subframe %d Scheduling UE %d/%x in round %d(SR %d,UL_inactivity timer %d,UL_failure timer %d,cqi_req_timer %d)\n",
		      module_idP, harq_pid, frameP, subframeP, UE_id, rnti,
		      round, UE_template->ul_SR,
		      UE_sched_ctrl->ul_inactivity_timer,
		      UE_sched_ctrl->ul_failure_timer,
		      UE_sched_ctrl->cqi_req_timer);
		// reset the scheduling request
		UE_template->ul_SR = 0;
		status = mac_eNB_get_rrc_status(module_idP, rnti);
		if (status < RRC_CONNECTED)
		    cqi_req = 0;
		else if (UE_sched_ctrl->cqi_req_timer > 30) {
		    cqi_req = 1;
		    UE_sched_ctrl->cqi_req_timer = 0;
		} else
		    cqi_req = 0;

		//power control
		//compute the expected ULSCH RX power (for the stats)

		// this is the normalized RX power and this should be constant (regardless of mcs
		normalized_rx_power = UE_sched_ctrl->pusch_snr[CC_id];
		target_rx_power = 178;

		// this assumes accumulated tpc
		// make sure that we are only sending a tpc update once a frame, otherwise the control loop will freak out
		int32_t framex10psubframe =
		    UE_template->pusch_tpc_tx_frame * 10 +
		    UE_template->pusch_tpc_tx_subframe;
		if (((framex10psubframe + 10) <= (frameP * 10 + subframeP)) ||	//normal case
		    ((framex10psubframe > (frameP * 10 + subframeP)) && (((10240 - framex10psubframe + frameP * 10 + subframeP) >= 10))))	//frame wrap-around
		{
		    UE_template->pusch_tpc_tx_frame = frameP;
		    UE_template->pusch_tpc_tx_subframe = subframeP;
		    if (normalized_rx_power > (target_rx_power + 4)) {
			tpc = 0;	//-1
			tpc_accumulated--;
		    } else if (normalized_rx_power < (target_rx_power - 4)) {
			tpc = 2;	//+1
			tpc_accumulated++;
		    } else {
			tpc = 1;	//0
		    }
		} else {
		    tpc = 1;	//0
		}
		//tpc = 1;
		if (tpc != 1) {
		    LOG_D(MAC,
			  "[eNB %d] ULSCH scheduler: frame %d, subframe %d, harq_pid %d, tpc %d, accumulated %d, normalized/target rx power %d/%d\n",
			  module_idP, frameP, subframeP, harq_pid, tpc,
			  tpc_accumulated, normalized_rx_power,
			  target_rx_power);
		}
		// new transmission
		if (round == 0) {

		    ndi = 1 - UE_template->oldNDI_UL[harq_pid];
		    UE_template->oldNDI_UL[harq_pid] = ndi;
		    UE_list->eNB_UE_stats[CC_id][UE_id].
			normalized_rx_power = normalized_rx_power;
		    UE_list->eNB_UE_stats[CC_id][UE_id].target_rx_power =
			target_rx_power;
		    UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs1 =
			UE_template->pre_assigned_mcs_ul;
		    UE_template->mcs_UL[harq_pid] = UE_template->pre_assigned_mcs_ul;	//cmin (UE_template->pre_assigned_mcs_ul, openair_daq_vars.target_ue_ul_mcs); // adjust, based on user-defined MCS
		    if (UE_template->pre_allocated_rb_table_index_ul >= 0) {
			rb_table_index =
			    UE_template->pre_allocated_rb_table_index_ul;
		    } else {
			UE_template->mcs_UL[harq_pid] = 10;	//cmin (10, openair_daq_vars.target_ue_ul_mcs);
			rb_table_index = 5;	// for PHR
		    }

		    UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs2 =
			UE_template->mcs_UL[harq_pid];
		    //            buffer_occupancy = UE_template->ul_total_buffer;


		    while (((rb_table[rb_table_index] >
			     (N_RB_UL - 1 - first_rb[CC_id]))
			    || (rb_table[rb_table_index] > 45))
			   && (rb_table_index > 0)) {
			rb_table_index--;
		    }

		    UE_template->TBS_UL[harq_pid] =
			get_TBS_UL(UE_template->mcs_UL[harq_pid],
				   rb_table[rb_table_index]);
		    UE_list->eNB_UE_stats[CC_id][UE_id].
			total_rbs_used_rx += rb_table[rb_table_index];
		    UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_TBS =
			UE_template->TBS_UL[harq_pid];
		    //            buffer_occupancy -= TBS;

		    T(T_ENB_MAC_UE_UL_SCHEDULE, T_INT(module_idP),
		      T_INT(CC_id), T_INT(rnti), T_INT(frameP),
		      T_INT(subframeP), T_INT(harq_pid),
		      T_INT(UE_template->mcs_UL[harq_pid]),
		      T_INT(first_rb[CC_id]),
		      T_INT(rb_table[rb_table_index]),
		      T_INT(UE_template->TBS_UL[harq_pid]), T_INT(ndi));

		    if (mac_eNB_get_rrc_status(module_idP, rnti) <
			RRC_CONNECTED)
			LOG_D(MAC,
			      "[eNB %d][PUSCH %d/%x] CC_id %d Frame %d subframeP %d Scheduled UE %d (mcs %d, first rb %d, nb_rb %d, rb_table_index %d, TBS %d, harq_pid %d)\n",
			      module_idP, harq_pid, rnti, CC_id, frameP,
			      subframeP, UE_id,
			      UE_template->mcs_UL[harq_pid],
			      first_rb[CC_id], rb_table[rb_table_index],
			      rb_table_index,
			      UE_template->TBS_UL[harq_pid], harq_pid);

		    // bad indices : 20 (40 PRB), 21 (45 PRB), 22 (48 PRB)
		    //store for possible retransmission
		    UE_template->nb_rb_ul[harq_pid] =
			rb_table[rb_table_index];
		    UE_template->first_rb_ul[harq_pid] = first_rb[CC_id];

		    UE_sched_ctrl->ul_scheduled |= (1 << harq_pid);
		    if (UE_id == UE_list->head)
			VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME
			    (VCD_SIGNAL_DUMPER_VARIABLES_UE0_SCHEDULED,
			     UE_sched_ctrl->ul_scheduled);

		    // adjust total UL buffer status by TBS, wait for UL sdus to do final update
		    LOG_D(MAC,
			  "[eNB %d] CC_id %d UE %d/%x : adjusting ul_total_buffer, old %d, TBS %d\n",
			  module_idP, CC_id, UE_id, rnti,
			  UE_template->ul_total_buffer,
			  UE_template->TBS_UL[harq_pid]);
		    if (UE_template->ul_total_buffer >
			UE_template->TBS_UL[harq_pid])
			UE_template->ul_total_buffer -=
			    UE_template->TBS_UL[harq_pid];
		    else
			UE_template->ul_total_buffer = 0;
		    LOG_D(MAC, "ul_total_buffer, new %d\n",
			  UE_template->ul_total_buffer);
		    // Cyclic shift for DM RS
		    cshift = 0;	// values from 0 to 7 can be used for mapping the cyclic shift (36.211 , Table 5.5.2.1.1-1)
		    // save it for a potential retransmission
		    UE_template->cshift[harq_pid] = cshift;

		    hi_dci0_pdu =
			&hi_dci0_req->hi_dci0_pdu_list[mac->HI_DCI0_req
						       [CC_id].
						       hi_dci0_request_body.
						       number_of_dci +
						       mac->HI_DCI0_req
						       [CC_id].
						       hi_dci0_request_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_DCI_PDU_TYPE;
		    hi_dci0_pdu->pdu_size =
			2 + sizeof(nfapi_hi_dci0_dci_pdu);
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.dci_format =
			NFAPI_UL_DCI_FORMAT_0;
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.aggregation_level =
			aggregation;
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.rnti = rnti;
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.transmission_power =
			6000;
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.
			resource_block_start = first_rb[CC_id];
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.
			number_of_resource_block =
			rb_table[rb_table_index];
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.mcs_1 =
			UE_template->mcs_UL[harq_pid];
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.
			cyclic_shift_2_for_drms = cshift;
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.
			frequency_hopping_enabled_flag = 0;
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.
			new_data_indication_1 = ndi;
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.tpc = tpc;
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.cqi_csi_request =
			cqi_req;
		    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.dl_assignment_index =
			UE_template->DAI_ul[sched_subframeP];

		    mac->HI_DCI0_req[CC_id].hi_dci0_request_body.
			number_of_dci++;

		    LOG_D(MAC,
			  "[PUSCH %d] Frame %d, Subframe %d: Adding UL CONFIG.Request for UE %d/%x, ulsch_frame %d, ulsch_subframe %d\n",
			  harq_pid, frameP, subframeP, UE_id, rnti,
			  sched_frame, sched_subframeP);

		    // Add UL_config PDUs
		    fill_nfapi_ulsch_config_request_rel8(&ul_req_tmp->ul_config_pdu_list[ul_req_tmp->number_of_pdus], cqi_req, cc, UE_template->physicalConfigDedicated, get_tmode(module_idP, CC_id, UE_id), mac->ul_handle, rnti, first_rb[CC_id],	// resource_block_start
							 rb_table[rb_table_index],	// number_of_resource_blocks
							 UE_template->mcs_UL[harq_pid], cshift,	// cyclic_shift_2_for_drms
							 0,	// frequency_hopping_enabled_flag
							 0,	// frequency_hopping_bits
							 ndi,	// new_data_indication
							 0,	// redundancy_version
							 harq_pid,	// harq_process_number
							 0,	// ul_tx_mode
							 0,	// current_tx_nb
							 0,	// n_srs
							 get_TBS_UL
							 (UE_template->
							  mcs_UL[harq_pid],
							  rb_table
							  [rb_table_index]));
1486
#ifdef Rel14
1487 1488 1489 1490 1491 1492 1493
		    if (UE_template->rach_resource_type > 0) {	// This is a BL/CE UE allocation
			fill_nfapi_ulsch_config_request_emtc(&ul_req_tmp->ul_config_pdu_list[ul_req_tmp->number_of_pdus], UE_template->rach_resource_type > 2 ? 2 : 1, 1,	//total_number_of_repetitions
							     1,	//repetition_number
							     (frameP *
							      10) +
							     subframeP);
		    }
1494
#endif
1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559
		    ul_req_tmp->number_of_pdus++;
		    mac->ul_handle++;

		    add_ue_ulsch_info(module_idP,
				      CC_id, UE_id, subframeP,
				      S_UL_SCHEDULED);

		    LOG_D(MAC,
			  "[eNB %d] CC_id %d Frame %d, subframeP %d: Generated ULSCH DCI for next UE_id %d, format 0\n",
			  module_idP, CC_id, frameP, subframeP, UE_id);

		    // increment first rb for next UE allocation
		    first_rb[CC_id] += rb_table[rb_table_index];
		} else {	// round > 0 => retransmission
		    T(T_ENB_MAC_UE_UL_SCHEDULE_RETRANSMISSION,
		      T_INT(module_idP), T_INT(CC_id), T_INT(rnti),
		      T_INT(frameP), T_INT(subframeP), T_INT(harq_pid),
		      T_INT(UE_template->mcs_UL[harq_pid]),
		      T_INT(first_rb[CC_id]),
		      T_INT(rb_table[rb_table_index]), T_INT(round));

		    // fill in NAK information

		    hi_dci0_pdu =
			&hi_dci0_req->hi_dci0_pdu_list[hi_dci0_req->
						       number_of_dci +
						       hi_dci0_req->
						       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.resource_block_start =
			UE_template->first_rb_ul[harq_pid];
		    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.
			cyclic_shift_2_for_drms =
			UE_template->cshift[harq_pid];
		    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.hi_value = 0;
		    hi_dci0_req->number_of_hi++;
		    LOG_D(MAC,
			  "[eNB %d][PUSCH %d/%x] CC_id %d Frame %d subframeP %d Scheduled (PHICH) UE %d (mcs %d, first rb %d, nb_rb %d, TBS %d, round %d)\n",
			  module_idP, harq_pid, rnti, CC_id, frameP,
			  subframeP, UE_id