eNB_scheduler.c 176 KB
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/*******************************************************************************

  Eurecom OpenAirInterface
  Copyright(c) 1999 - 2010 Eurecom

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

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

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

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

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

*******************************************************************************/
/*! \file eNB_scheduler.c
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 * \brief procedures related to UE
 * \author Raymond Knopp, Navid Nikaein
 * \date 2011
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 * \email: navid.nikaein@eurecom.fr
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 * \version 0.5
 * @ingroup _mac
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 */
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#include "PHY/defs.h"
#include "PHY/extern.h"

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

#include "LAYER2/MAC/defs.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 "ARCH/CBMIMO1/DEVICE_DRIVER/extern.h"
#include "ARCH/CBMIMO1/DEVICE_DRIVER/defs.h"
#include "ARCH/CBMIMO1/DEVICE_DRIVER/from_grlib_softregs.h"

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

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//#include "LAYER2/MAC/pre_processor.c"
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#include "pdcp.h"
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#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif

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#define ENABLE_MAC_PAYLOAD_DEBUG
#define DEBUG_eNB_SCHEDULER 1
//#define DEBUG_HEADER_PARSING 1
//#define DEBUG_PACKET_TRACE 1

/*
  #ifndef USER_MODE
  #define msg debug_msg
  #endif
*/

extern inline unsigned int taus(void);


void init_ue_sched_info(void){
  int i,j;
  for (i=0;i<NUMBER_OF_eNB_MAX;i++){
    for (j=0;j<NUMBER_OF_UE_MAX;j++){
      // init DL
      eNB_dlsch_info[i][j].weight           = 0;
      eNB_dlsch_info[i][j].subframe         = 0;
      eNB_dlsch_info[i][j].serving_num      = 0;
      eNB_dlsch_info[i][j].status           = S_DL_NONE;
      // init UL
      eNB_ulsch_info[i][j].subframe         = 0;
      eNB_ulsch_info[i][j].serving_num      = 0;
      eNB_ulsch_info[i][j].status           = S_UL_NONE;
    }
  }
}

void add_ue_ulsch_info(unsigned char Mod_id, unsigned char UE_id, unsigned char subframe, UE_ULSCH_STATUS status){

  eNB_ulsch_info[Mod_id][UE_id].rnti             = find_UE_RNTI(Mod_id,UE_id);
  eNB_ulsch_info[Mod_id][UE_id].subframe         = subframe;
  eNB_ulsch_info[Mod_id][UE_id].status           = status;

  eNB_ulsch_info[Mod_id][UE_id].serving_num++;

}
void add_ue_dlsch_info(unsigned char Mod_id, unsigned char UE_id, unsigned char subframe, UE_DLSCH_STATUS status){

  eNB_dlsch_info[Mod_id][UE_id].rnti             = find_UE_RNTI(Mod_id,UE_id);
  //  eNB_dlsch_info[Mod_id][UE_id].weight           = weight;
  eNB_dlsch_info[Mod_id][UE_id].subframe         = subframe;
  eNB_dlsch_info[Mod_id][UE_id].status           = status;

  eNB_dlsch_info[Mod_id][UE_id].serving_num++;

}

unsigned char get_ue_weight(unsigned char Mod_id, unsigned char UE_id){

  return(eNB_dlsch_info[Mod_id][UE_id].weight);

}

// return is rnti ???
unsigned char schedule_next_ulue(unsigned char Mod_id, unsigned char UE_id, unsigned char subframe){

  unsigned char next_ue;

  // first phase: scheduling for ACK
  switch (subframe) {
    // scheduling for subframe 2: for scheduled user during subframe 5 and 6
  case 8:
    if  ((eNB_dlsch_info[Mod_id][UE_id].status == S_DL_SCHEDULED) &&
	 (eNB_dlsch_info[Mod_id][UE_id].subframe == 5 || eNB_dlsch_info[Mod_id][UE_id].subframe == 6)){
      // set the downlink status
      eNB_dlsch_info[Mod_id][UE_id].status = S_DL_BUFFERED;
      return UE_id;
    }
    break;
    // scheduling for subframe 3: for scheduled user during subframe 7 and 8
  case 9:
    if  ((eNB_dlsch_info[Mod_id][UE_id].status == S_DL_SCHEDULED) &&
	 (eNB_dlsch_info[Mod_id][UE_id].subframe == 7 || eNB_dlsch_info[Mod_id][UE_id].subframe == 8)){
      eNB_dlsch_info[Mod_id][UE_id].status = S_DL_BUFFERED;
      return UE_id;
    }
    break;
    // scheduling UL subframe 4: for scheduled user during subframe 9 and 0
  case 0 :
    if  ((eNB_dlsch_info[Mod_id][UE_id].status == S_DL_SCHEDULED) &&
	 (eNB_dlsch_info[Mod_id][UE_id].subframe == 9 || eNB_dlsch_info[Mod_id][UE_id].subframe == 0)){
      eNB_dlsch_info[Mod_id][UE_id].status = S_DL_BUFFERED;
      return UE_id;
    }
    break;
  default:
    break;
  }

  // second phase
  for (next_ue=0; next_ue <NUMBER_OF_UE_MAX; next_ue++ ){

    if  (eNB_ulsch_info[Mod_id][next_ue].status == S_UL_WAITING )
      return next_ue;
    else if (eNB_ulsch_info[Mod_id][next_ue].status == S_UL_SCHEDULED){
      eNB_ulsch_info[Mod_id][next_ue].status = S_UL_BUFFERED;
    }
  }
  for (next_ue=0; next_ue <NUMBER_OF_UE_MAX; next_ue++ ){
    if (eNB_ulsch_info[Mod_id][next_ue].status != S_UL_NONE )// do this just for active UEs
      eNB_ulsch_info[Mod_id][next_ue].status = S_UL_WAITING;
  }
  next_ue = 0;
  return next_ue;

}

unsigned char schedule_next_dlue(unsigned char Mod_id, unsigned char subframe){

  unsigned char next_ue;

  for (next_ue=0; next_ue <NUMBER_OF_UE_MAX; next_ue++ ){
    if  (eNB_dlsch_info[Mod_id][next_ue].status == S_DL_WAITING)
      return next_ue;
  }
  for (next_ue=0; next_ue <NUMBER_OF_UE_MAX; next_ue++ )
    if  (eNB_dlsch_info[Mod_id][next_ue].status == S_DL_BUFFERED) {
      eNB_dlsch_info[Mod_id][next_ue].status = S_DL_WAITING;
    }
  // next_ue = -1;
  return (-1);//next_ue;

}

void initiate_ra_proc(u8 Mod_id, u32 frame, u16 preamble_index,s16 timing_offset,u8 sect_id,u8 subframe,u8 f_id) {

  u8 i;

  LOG_I(MAC,"[eNB %d][RAPROC] Frame %d Initiating RA procedure for preamble index %d\n",Mod_id,frame,preamble_index);

  for (i=0;i<NB_RA_PROC_MAX;i++) {
    if (eNB_mac_inst[Mod_id].RA_template[i].RA_active==0) {
      eNB_mac_inst[Mod_id].RA_template[i].RA_active=1;
      eNB_mac_inst[Mod_id].RA_template[i].generate_rar=1;
      eNB_mac_inst[Mod_id].RA_template[i].generate_Msg4=0;
      eNB_mac_inst[Mod_id].RA_template[i].wait_ack_Msg4=0;
      eNB_mac_inst[Mod_id].RA_template[i].timing_offset=timing_offset;
      // Put in random rnti (to be replaced with proper procedure!!)
      eNB_mac_inst[Mod_id].RA_template[i].rnti = taus();
      eNB_mac_inst[Mod_id].RA_template[i].RA_rnti = 1+subframe+(10*f_id);
      eNB_mac_inst[Mod_id].RA_template[i].preamble_index = preamble_index;
      LOG_D(MAC,"[eNB %d][RAPROC] Frame %d Activating RAR generation for process %d, rnti %x, RA_active %d\n",
	    Mod_id,frame,i,eNB_mac_inst[Mod_id].RA_template[i].rnti,
	    eNB_mac_inst[Mod_id].RA_template[i].RA_active);
      
      return;
    }
  }
}

void cancel_ra_proc(u8 Mod_id, u32 frame, u16 rnti) {
  unsigned char i;
  LOG_I(MAC,"[eNB %d][RAPROC] Frame %d Cancelling RA procedure for UE rnti %x\n",Mod_id,frame,rnti);

  for (i=0;i<NB_RA_PROC_MAX;i++) {
    if (rnti == eNB_mac_inst[Mod_id].RA_template[i].rnti) {
      eNB_mac_inst[Mod_id].RA_template[i].RA_active=0;
      eNB_mac_inst[Mod_id].RA_template[i].generate_rar=0;
      eNB_mac_inst[Mod_id].RA_template[i].generate_Msg4=0;
      eNB_mac_inst[Mod_id].RA_template[i].wait_ack_Msg4=0;
      eNB_mac_inst[Mod_id].RA_template[i].timing_offset=0;
      eNB_mac_inst[Mod_id].RA_template[i].RRC_timer=20;
      eNB_mac_inst[Mod_id].RA_template[i].rnti = 0;
    }
  }
}

void terminate_ra_proc(u8 Mod_id,u32 frame,u16 rnti,unsigned char *msg3, u16 msg3_len) {

  unsigned char rx_ces[MAX_NUM_CE],num_ce,num_sdu,i,*payload_ptr;
  unsigned char rx_lcids[NB_RB_MAX];
  u16 rx_lengths[NB_RB_MAX];
  s8 UE_id;

  LOG_I(MAC,"[eNB %d][RAPROC] Frame %d, Received msg3 %x.%x.%x.%x.%x.%x, Terminating RA procedure for UE rnti %x\n",
	Mod_id,frame,
	msg3[3],msg3[4],msg3[5],msg3[6],msg3[7], msg3[8], rnti);

  for (i=0;i<NB_RA_PROC_MAX;i++) {
    LOG_D(MAC,"[RAPROC] Checking proc %d : rnti (%x, %x), active %d\n",i,
	  eNB_mac_inst[Mod_id].RA_template[i].rnti, rnti,
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	  eNB_mac_inst[Mod_id].RA_template[i].RA_active);
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    if ((eNB_mac_inst[Mod_id].RA_template[i].rnti==rnti) &&
	(eNB_mac_inst[Mod_id].RA_template[i].RA_active==1)) {

      payload_ptr = parse_ulsch_header(msg3,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,msg3_len);
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      LOG_D(MAC,"[eNB %d][RAPROC] Frame %d Received CCCH: length %d, offset %d\n",
	    Mod_id,frame,rx_lengths[0],payload_ptr-msg3);
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      if ((num_ce == 0) && (num_sdu==1) && (rx_lcids[0] == CCCH)) { // This is an RRCConnectionRequest/Restablishment
	memcpy(&eNB_mac_inst[Mod_id].RA_template[i].cont_res_id[0],payload_ptr,6);
	LOG_D(MAC,"[eNB %d][RAPROC] Frame %d Received CCCH: length %d, offset %d\n",
	      Mod_id,frame,rx_lengths[0],payload_ptr-msg3);
	UE_id=add_new_ue(Mod_id,eNB_mac_inst[Mod_id].RA_template[i].rnti);
	if (UE_id==-1) {
	  mac_xface->macphy_exit("[MAC][eNB] Max user count reached\n");
	}
	else {
	  LOG_I(MAC,"[eNB %d][RAPROC] Frame %d Added user with rnti %x => UE %d\n",
		Mod_id,frame,eNB_mac_inst[Mod_id].RA_template[i].rnti,UE_id);
	}

	if (Is_rrc_registered == 1)
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	  mac_rrc_data_ind(Mod_id,frame,CCCH,(u8 *)payload_ptr,rx_lengths[0],1,Mod_id,0);
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	// add_user.  This is needed to have the rnti for configuring UE (PHY). The UE is removed if RRC
	// doesn't provide a CCCH SDU
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      }
      else if (num_ce >0) {  // handle msg3 which is not RRCConnectionRequest
	//	process_ra_message(msg3,num_ce,rx_lcids,rx_ces);
      }
 
      eNB_mac_inst[Mod_id].RA_template[i].generate_Msg4 = 1;
      eNB_mac_inst[Mod_id].RA_template[i].wait_ack_Msg4 = 0;

      return;
    } // if process is active

  } // loop on RA processes
}

DCI_PDU *get_dci_sdu(u8 Mod_id, u32 frame, u8 subframe) {

  return(&eNB_mac_inst[Mod_id].DCI_pdu);

}

s8 find_UE_id(unsigned char Mod_id,u16 rnti) {

  unsigned char i;

  for (i=0;i<NUMBER_OF_UE_MAX;i++) {
    if (eNB_mac_inst[Mod_id].UE_template[i].rnti==rnti) {
      return(i);
    }
  }
  return(-1);

}

s16 find_UE_RNTI(unsigned char Mod_id, unsigned char UE_id) {

  return (eNB_mac_inst[Mod_id].UE_template[UE_id].rnti);

}
u8 is_UE_active(unsigned char Mod_id, unsigned char UE_id ){
  if (eNB_mac_inst[Mod_id].UE_template[UE_id].rnti !=0 )
    return 1;
  else
    return 0 ;
}
s8 find_active_UEs(unsigned char Mod_id){

  unsigned char UE_id;
  u16 rnti;
  unsigned char nb_active_ue=0;

  for (UE_id=0;UE_id<NUMBER_OF_UE_MAX;UE_id++) {

    if (((rnti=eNB_mac_inst[Mod_id].UE_template[UE_id].rnti) !=0)&&(eNB_mac_inst[Mod_id].UE_template[UE_id].ul_active==1)){

      if (mac_xface->get_eNB_UE_stats(Mod_id,rnti) != NULL){ // check at the phy enb_ue state for this rnti
	nb_active_ue++;
      }
      else { // this ue is removed at the phy => remove it at the mac as well
	mac_remove_ue(Mod_id, UE_id);
      }
    }
  }
  return(nb_active_ue);
}

// function for determining which active ue should be granted resources in uplink based on BSR+QoS
u16 find_ulgranted_UEs(unsigned char Mod_id){

  // all active users should be granted
  return(find_active_UEs(Mod_id));
}

// function for determining which active ue should be granted resources in downlink based on CQI, SI, and BSR
u16 find_dlgranted_UEs(unsigned char Mod_id){

  // all active users should be granted
  return(find_active_UEs(Mod_id));
}
// get aggregatiob form phy for a give UE
unsigned char process_ue_cqi (unsigned char Mod_id, unsigned char UE_id) {

  unsigned char aggregation=2;
  // check the MCS and SNR and set the aggregation accordingly

  return aggregation;
}
#ifdef CBA
u8 find_num_active_UEs_in_cbagroup(unsigned char Mod_id, unsigned char group_id){

  u8 UE_id;
  u16 rnti;
  unsigned char nb_ue_in_pusch=0;
  LTE_eNB_UE_stats* eNB_UE_stats;
  
  for (UE_id=group_id;UE_id<NUMBER_OF_UE_MAX;UE_id+=eNB_mac_inst[Mod_id].num_active_cba_groups) {

    if (((rnti=eNB_mac_inst[Mod_id].UE_template[UE_id].rnti) !=0) && 
	(eNB_mac_inst[Mod_id].UE_template[UE_id].ul_active==1)    && 
	(mac_get_rrc_status(Mod_id,1,UE_id) > RRC_CONNECTED)){
      //  && (UE_is_to_be_scheduled(Mod_id,UE_id))) 
      // check at the phy enb_ue state for this rnti
      if ((eNB_UE_stats= mac_xface->get_eNB_UE_stats(Mod_id,rnti)) != NULL){ 
	if ((eNB_UE_stats->mode == PUSCH) && (UE_is_to_be_scheduled(Mod_id,UE_id) == 0)){ 
	  nb_ue_in_pusch++;
	}
      }
    }
  }
  return(nb_ue_in_pusch);
}
#endif 
s8 add_new_ue(unsigned char Mod_id, u16 rnti) {
  unsigned char i;

  for (i=0;i<NUMBER_OF_UE_MAX;i++) {
    if (eNB_mac_inst[Mod_id].UE_template[i].rnti==0) {
      eNB_mac_inst[Mod_id].UE_template[i].rnti=rnti;
      eNB_ulsch_info[Mod_id][i].status = S_UL_WAITING;
      eNB_dlsch_info[Mod_id][i].status = S_UL_WAITING;
      LOG_D(MAC,"[eNB] Add UE_id %d : rnti %x\n",i,eNB_mac_inst[Mod_id].UE_template[i].rnti);
      return((s8)i);
    }
  }
  return(-1);
}

s8 mac_remove_ue(unsigned char Mod_id, unsigned char UE_id) {

  LOG_I(MAC,"Removing UE %d (rnti %x)\n",UE_id,eNB_mac_inst[Mod_id].UE_template[UE_id].rnti);

  // clear all remaining pending transmissions
  eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID0]  = 0;
  eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID1]  = 0;
  eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID2]  = 0;
  eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID3]  = 0;

  eNB_mac_inst[Mod_id].UE_template[UE_id].ul_SR           = 0;
  eNB_mac_inst[Mod_id].UE_template[UE_id].rnti            = 0;
  eNB_mac_inst[Mod_id].UE_template[UE_id].ul_active       = 0;
  eNB_ulsch_info[Mod_id][UE_id].rnti          = 0;
  eNB_ulsch_info[Mod_id][UE_id].status        = S_UL_NONE;
  eNB_dlsch_info[Mod_id][UE_id].rnti          = 0;
  eNB_dlsch_info[Mod_id][UE_id].status        = S_DL_NONE;

  rrc_remove_UE(Mod_id,UE_id);

  return(1);
}

unsigned char *get_dlsch_sdu(u8 Mod_id,u32 frame,u16 rnti,u8 TBindex) {

  unsigned char UE_id;

  if (rnti==SI_RNTI) {
    LOG_D(MAC,"[eNB %d] Frame %d Get DLSCH sdu for BCCH \n",Mod_id,frame);

    return((unsigned char *)&eNB_mac_inst[Mod_id].BCCH_pdu.payload[0]);
  }
  else {

    UE_id = find_UE_id(Mod_id,rnti);
    LOG_D(MAC,"[eNB %d] Frame %d  Get DLSCH sdu for rnti %x => UE_id %d\n",Mod_id,frame,rnti,UE_id);

    return((unsigned char *)&eNB_mac_inst[Mod_id].DLSCH_pdu[UE_id][TBindex].payload[0]);
  }

}

unsigned char *parse_ulsch_header(unsigned char *mac_header,
				  unsigned char *num_ce,
				  unsigned char *num_sdu,
				  unsigned char *rx_ces,
				  unsigned char *rx_lcids,
				  unsigned short *rx_lengths,
				  unsigned short tb_length) {

  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 %d)\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+=4;
	else if (lcid==CRNTI)
	  ce_len+=2;
	else if ((lcid==POWER_HEADROOM) || (lcid==TRUNCATED_BSR)|| (lcid== SHORT_BSR))
	  ce_len++;
      }
    }
  }
  *num_ce = num_ces;
  *num_sdu = num_sdus;

  return(mac_header_ptr);
}

void SR_indication(u8 Mod_id,u32 frame, u16 rnti, u8 subframe) {

  u8 UE_id = find_UE_id(Mod_id,rnti);

  LOG_D(MAC,"[eNB %d][SR %x] Frame %d subframe %d Signaling SR for UE %d \n",Mod_id,rnti,frame,subframe, UE_id);
  eNB_mac_inst[Mod_id].UE_template[UE_id].ul_SR = 1;
  eNB_mac_inst[Mod_id].UE_template[UE_id].ul_active = 1;
}

void rx_sdu(u8 Mod_id,u32 frame,u16 rnti,u8 *sdu, u16 sdu_len) {

  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];
  unsigned char UE_id = find_UE_id(Mod_id,rnti);
  int ii,j;
  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);

  eNB_mac_inst[Mod_id].eNB_UE_stats[UE_id].total_pdu_bytes_rx+=sdu_len;
  eNB_mac_inst[Mod_id].eNB_UE_stats[UE_id].total_num_pdus_rx+=1;

  LOG_D(MAC,"[eNB %d] Received ULSCH sdu from PHY (rnti %x, UE_id %d), parsing header\n",Mod_id,rnti,UE_id);
  payload_ptr = parse_ulsch_header(sdu,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,sdu_len);

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

    switch (rx_ces[i]) { // implement and process BSR + CRNTI +
    case POWER_HEADROOM:
      eNB_mac_inst[Mod_id].UE_template[UE_id].phr_info =  (payload_ptr[0] & 0x3f);// - PHR_MAPPING_OFFSET; 
      LOG_D(MAC, "[eNB] MAC CE_LCID %d : Received PHR PH = %d (db)\n", rx_ces[i], eNB_mac_inst[Mod_id].UE_template[UE_id].phr_info);
      payload_ptr+=sizeof(POWER_HEADROOM_CMD);
      break;
    case CRNTI:
      LOG_D(MAC, "[eNB] MAC CE_LCID %d : Received CRNTI %d \n", rx_ces[i], payload_ptr[0]);
      payload_ptr+=1;
      break;
    case TRUNCATED_BSR:
    case SHORT_BSR: {
      u8 lcgid;

      lcgid = (payload_ptr[0] >> 6);
      LOG_D(MAC, "[eNB] MAC CE_LCID %d : Received short BSR LCGID = %u bsr = %d\n",
            rx_ces[i], lcgid, payload_ptr[0] & 0x3f);
      eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[lcgid] = (payload_ptr[0] & 0x3f);
      payload_ptr += 1;//sizeof(SHORT_BSR); // fixme
    } break;
    case LONG_BSR:
      eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID0] = ((payload_ptr[0] & 0xFC) >> 2);
      eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID1] =
560
	((payload_ptr[0] & 0x03) << 4) | ((payload_ptr[1] & 0xF0) >> 4);
561
      eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID2] =
562
	((payload_ptr[1] & 0x0F) << 2) | ((payload_ptr[2] & 0xC0) >> 6);
563 564
      eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID3] = (payload_ptr[2] & 0x3F);
      LOG_D(MAC, "[eNB] MAC CE_LCID %d: Received long BSR LCGID0 = %u LCGID1 = "
565
	    "%u LCGID2 = %u LCGID3 = %u\n",
566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716
            rx_ces[i],
            eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID0],
            eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID1],
            eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID2],
            eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID3]);
      break;
    default:
      LOG_E(MAC, "[eNB] Received unknown MAC header (0x%02x)\n", rx_ces[i]);
      break;
    }
  }

  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]);
   
    if ((rx_lcids[i] == DCCH)||(rx_lcids[i] == DCCH1)) {
      //      if(eNB_mac_inst[Mod_id].Dcch_lchan[UE_id].Active==1){

#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
      LOG_T(MAC,"offset: %d\n",(unsigned char)((unsigned char*)payload_ptr-sdu));
      for (j=0;j<32;j++)
        LOG_T(MAC,"%x ",payload_ptr[j]);
      LOG_T(MAC,"\n");
#endif

      //  This check is just to make sure we didn't get a bogus SDU length, to be removed ...
      if (rx_lengths[i]<CCCH_PAYLOAD_SIZE_MAX) {
	LOG_D(MAC,"[eNB %d] Frame %d : ULSCH -> UL-DCCH, received %d bytes form UE %d on LCID %d(%d) \n",
	      Mod_id,frame, rx_lengths[i], UE_id, rx_lcids[i], rx_lcids[i]+(UE_id*NB_RB_MAX));

	mac_rlc_data_ind(Mod_id,frame,1,RLC_MBMS_NO,
			 rx_lcids[i]+(UE_id*NB_RB_MAX),
			 (char *)payload_ptr,
			 rx_lengths[i],
			 1,
			 NULL);//(unsigned int*)crc_status);
	eNB_mac_inst[Mod_id].eNB_UE_stats[UE_id].num_pdu_rx[rx_lcids[i]]+=1;
	eNB_mac_inst[Mod_id].eNB_UE_stats[UE_id].num_bytes_rx[rx_lcids[i]]+=rx_lengths[i];

      }
      //      }
    } else if (rx_lcids[i] >= DTCH) {
      //      if(eNB_mac_inst[Mod_id].Dcch_lchan[UE_id].Active==1){

#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
      LOG_T(MAC,"offset: %d\n",(unsigned char)((unsigned char*)payload_ptr-sdu));
     
      for (j=0;j<32;j++)
        LOG_T(MAC,"%x ",payload_ptr[j]);
      LOG_T(MAC,"\n"); 
#endif

      LOG_D(MAC,"[eNB %d] Frame %d : ULSCH -> UL-DTCH, received %d bytes from UE %d for lcid %d (%d)\n",
	    Mod_id,frame, rx_lengths[i], UE_id,rx_lcids[i],rx_lcids[i]+(UE_id*NB_RB_MAX));

      if ((rx_lengths[i] <SCH_PAYLOAD_SIZE_MAX) &&  (rx_lengths[i] > 0) ) {   // MAX SIZE OF transport block
	mac_rlc_data_ind(Mod_id,frame,1,RLC_MBMS_NO,
			 DTCH+(UE_id*NB_RB_MAX),
			 (char *)payload_ptr,
			 rx_lengths[i],
			 1,
			 NULL);//(unsigned int*)crc_status);
	eNB_mac_inst[Mod_id].eNB_UE_stats[UE_id].num_pdu_rx[rx_lcids[i]]+=1;
	eNB_mac_inst[Mod_id].eNB_UE_stats[UE_id].num_bytes_rx[rx_lcids[i]]+=rx_lengths[i];
	
      }
      //      }
    } else {
      eNB_mac_inst[Mod_id].eNB_UE_stats[UE_id].num_errors_rx+=1;
      LOG_E(MAC,"[eNB %d] received unknown LCID %d from UE %d ", rx_lcids[i], UE_id);
    }
    
    payload_ptr+=rx_lengths[i];
  }

  vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_RX_SDU,0);

}

unsigned char generate_dlsch_header(unsigned char *mac_header,
				    unsigned char num_sdus,
				    unsigned short *sdu_lengths,
				    unsigned char *sdu_lcids,
				    unsigned char drx_cmd,
				    short timing_advance_cmd,
				    unsigned char *ue_cont_res_id,
				    unsigned char short_padding,
				    unsigned short post_padding) {

  SCH_SUBHEADER_FIXED *mac_header_ptr = (SCH_SUBHEADER_FIXED *)mac_header;
  u8 first_element=0,last_size=0,i;
  u8 mac_header_control_elements[16],*ce_ptr;

  ce_ptr = &mac_header_control_elements[0];

  // compute header components
  
  if ((short_padding == 1) || (short_padding == 2)) {
    mac_header_ptr->R    = 0;
    mac_header_ptr->E    = 0;
    mac_header_ptr->LCID = SHORT_PADDING;
    first_element=1;
    last_size=1;
  }
  if (short_padding == 2) {
    mac_header_ptr->E = 1;
    mac_header_ptr++;
    mac_header_ptr->R = 0;
    mac_header_ptr->E    = 0;
    mac_header_ptr->LCID = SHORT_PADDING;
    last_size=1;
  }

  if (drx_cmd != 255) {
    if (first_element>0) {
      mac_header_ptr->E = 1;
      mac_header_ptr++;
    }
    else {
      first_element=1;
    }
    mac_header_ptr->R = 0;
    mac_header_ptr->E    = 0;
    mac_header_ptr->LCID = DRX_CMD;
    last_size=1;
  }

  if (timing_advance_cmd != 0) {
    if (first_element>0) {
      mac_header_ptr->E = 1;
      mac_header_ptr++;
    }
    else {
      first_element=1;
    }
    mac_header_ptr->R = 0;
    mac_header_ptr->E    = 0;
    mac_header_ptr->LCID = TIMING_ADV_CMD;
    last_size=1;
    //    msg("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
    ((TIMING_ADVANCE_CMD *)ce_ptr)->R=0;
    ((TIMING_ADVANCE_CMD *)ce_ptr)->TA=timing_advance_cmd&0x3f;
    LOG_I(MAC,"timing advance =%d (%d)\n",timing_advance_cmd,((TIMING_ADVANCE_CMD *)ce_ptr)->TA);
    ce_ptr+=sizeof(TIMING_ADVANCE_CMD);
    //msg("offset %d\n",ce_ptr-mac_header_control_elements);
  }

  if (ue_cont_res_id) {
    if (first_element>0) {
      mac_header_ptr->E = 1;
      /*   
717 718 719 720
	   printf("[eNB][MAC] last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
	   ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
	   ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
	   ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
721 722 723 724 725 726 727 728 729 730 731 732 733
      */
      mac_header_ptr++;
    }
    else {
      first_element=1;
    }

    mac_header_ptr->R = 0;
    mac_header_ptr->E    = 0;
    mac_header_ptr->LCID = UE_CONT_RES;
    last_size=1;
    
    LOG_T(MAC,"[eNB ][RAPROC] Generate contention resolution msg: %x.%x.%x.%x.%x.%x\n",
734 735 736 737 738 739
	  ue_cont_res_id[0],
	  ue_cont_res_id[1],
	  ue_cont_res_id[2],
	  ue_cont_res_id[3],
	  ue_cont_res_id[4],
	  ue_cont_res_id[5]);
740 741 742 743 744 745 746 747 748 749 750 751 752 753
    
    memcpy(ce_ptr,ue_cont_res_id,6);
    ce_ptr+=6;
    // msg("(cont_res) : offset %d\n",ce_ptr-mac_header_control_elements);
  }

  //msg("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);

  for (i=0;i<num_sdus;i++) {
    LOG_T(MAC,"[eNB] Generate DLSCH header num sdu %d len sdu %d\n",num_sdus, sdu_lengths[i]);

    if (first_element>0) {
      mac_header_ptr->E = 1;
      /*msg("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
754 755 756
	((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
	((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
	((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790
      */
      mac_header_ptr+=last_size;
      //msg("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
    }
    else {
      first_element=1;
    }
    if (sdu_lengths[i] < 128) {
      ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->R    = 0;
      ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->E    = 0;
      ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->F    = 0;
      ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->LCID = sdu_lcids[i];
      ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->L    = (unsigned char)sdu_lengths[i];
      last_size=2;
    }
    else {
      ((SCH_SUBHEADER_LONG *)mac_header_ptr)->R    = 0;
      ((SCH_SUBHEADER_LONG *)mac_header_ptr)->E    = 0;
      ((SCH_SUBHEADER_LONG *)mac_header_ptr)->F    = 1;
      ((SCH_SUBHEADER_LONG *)mac_header_ptr)->LCID = sdu_lcids[i];
      ((SCH_SUBHEADER_LONG *)mac_header_ptr)->L_MSB    = ((unsigned short) sdu_lengths[i]>>8)&0x7f;
      ((SCH_SUBHEADER_LONG *)mac_header_ptr)->L_LSB    = (unsigned short) sdu_lengths[i]&0xff;
      ((SCH_SUBHEADER_LONG *)mac_header_ptr)->padding   = 0x00;
      last_size=3;
#ifdef DEBUG_HEADER_PARSING
      LOG_D(MAC,"[eNB] generate long sdu, size %x (MSB %x, LSB %x)\n", 
	    sdu_lengths[i],
	    ((SCH_SUBHEADER_LONG *)mac_header_ptr)->L_MSB,
	    ((SCH_SUBHEADER_LONG *)mac_header_ptr)->L_LSB);
#endif
    }
  }
  /*

791
    printf("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819
  
    printf("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
    ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
    ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
    ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);


    if (((SCH_SUBHEADER_FIXED*)mac_header_ptr)->LCID < UE_CONT_RES) {
    if (((SCH_SUBHEADER_SHORT*)mac_header_ptr)->F == 0)
    printf("F = 0, sdu len (L field) %d\n",(((SCH_SUBHEADER_SHORT*)mac_header_ptr)->L));
    else
    printf("F = 1, sdu len (L field) %d\n",(((SCH_SUBHEADER_LONG*)mac_header_ptr)->L));
    }
  */
  if (post_padding>0) {// we have lots of padding at the end of the packet
    mac_header_ptr->E = 1;
    mac_header_ptr+=last_size;
    // add a padding element
    mac_header_ptr->R    = 0;
    mac_header_ptr->E    = 0;
    mac_header_ptr->LCID = SHORT_PADDING;
    mac_header_ptr++;
  }
  else { // no end of packet padding
    // last SDU subhead is of fixed type (sdu length implicitly to be computed at UE)
    mac_header_ptr++;
  }

820
  //msg("After subheaders %d\n",(u8*)mac_header_ptr - mac_header);
821 822 823 824 825 826
  
  if ((ce_ptr-mac_header_control_elements) > 0) {
    // printf("Copying %d bytes for control elements\n",ce_ptr-mac_header_control_elements);
    memcpy((void*)mac_header_ptr,mac_header_control_elements,ce_ptr-mac_header_control_elements);
    mac_header_ptr+=(unsigned char)(ce_ptr-mac_header_control_elements);
  }
827
  //msg("After CEs %d\n",(u8*)mac_header_ptr - mac_header);
828 829 830 831 832 833

  return((unsigned char*)mac_header_ptr - mac_header);

}

/*
834 835 836 837 838 839 840 841
  #ifdef Rel10
  unsigned char generate_mch_header( unsigned char *mac_header,
  unsigned char num_sdus,
  unsigned short *sdu_lengths,
  unsigned char *sdu_lcids,
  unsigned char msi,
  unsigned char short_padding,
  unsigned short post_padding) {
842 843 844 845 846 847 848 849

  SCH_SUBHEADER_FIXED *mac_header_ptr = (SCH_SUBHEADER_FIXED *)mac_header;
  u8 first_element=0,last_size=0,i;
  u8 mac_header_control_elements[2*num_sdus],*ce_ptr;

  ce_ptr = &mac_header_control_elements[0];

  if ((short_padding == 1) || (short_padding == 2)) {
850 851 852 853 854
  mac_header_ptr->R    = 0;
  mac_header_ptr->E    = 0;
  mac_header_ptr->LCID = SHORT_PADDING;
  first_element=1;
  last_size=1;
855 856
  }
  if (short_padding == 2) {
857 858 859 860 861 862
  mac_header_ptr->E = 1;
  mac_header_ptr++;
  mac_header_ptr->R = 0;
  mac_header_ptr->E    = 0;
  mac_header_ptr->LCID = SHORT_PADDING;
  last_size=1;
863 864 865 866
  }

  // SUBHEADER for MSI CE
  if (msi != 0) {// there is MSI MAC Control Element
867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890
  if (first_element>0) {
  mac_header_ptr->E = 1;
  mac_header_ptr+=last_size;
  }
  else {
  first_element = 1;
  }
  if (num_sdus*2 < 128) {
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->R    = 0;
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->E    = 0;
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->F    = 0;
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->LCID = MCH_SCHDL_INFO;
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->L    = num_sdus*2;
  last_size=2;
  }
  else {
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->R    = 0;
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->E    = 0;
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->F    = 1;
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->LCID = MCH_SCHDL_INFO;
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->L    = (num_sdus*2)&0x7fff;
  last_size=3;
  }
  // Create the MSI MAC Control Element here
891 892 893 894
  }
 
  // SUBHEADER for MAC SDU (MCCH+MTCHs)
  for (i=0;i<num_sdus;i++) {
895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917
  if (first_element>0) {
  mac_header_ptr->E = 1;
  mac_header_ptr+=last_size;
  }
  else {
  first_element = 1;
  }
  if (sdu_lengths[i] < 128) {
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->R    = 0;
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->E    = 0;
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->F    = 0;
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->LCID = sdu_lcids[i];
  ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->L    = (unsigned char)sdu_lengths[i];
  last_size=2;
  }
  else {
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->R    = 0;
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->E    = 0;
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->F    = 1;
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->LCID = sdu_lcids[i];
  ((SCH_SUBHEADER_LONG *)mac_header_ptr)->L    = (unsigned short) sdu_lengths[i]&0x7fff;
  last_size=3;
  }
918 919 920
  }

  if (post_padding>0) {// we have lots of padding at the end of the packet
921 922 923 924 925 926 927
  mac_header_ptr->E = 1;
  mac_header_ptr+=last_size;
  // add a padding element
  mac_header_ptr->R    = 0;
  mac_header_ptr->E    = 0;
  mac_header_ptr->LCID = SHORT_PADDING;
  mac_header_ptr++;
928 929
  }
  else { // no end of packet padding
930 931
  // last SDU subhead is of fixed type (sdu length implicitly to be computed at UE)
  mac_header_ptr++;
932 933 934 935
  }

  // Copy MSI Control Element to the end of the MAC Header if it presents
  if ((ce_ptr-mac_header_control_elements) > 0) {
936 937 938
  // printf("Copying %d bytes for control elements\n",ce_ptr-mac_header_control_elements);
  memcpy((void*)mac_header_ptr,mac_header_control_elements,ce_ptr-mac_header_control_elements);
  mac_header_ptr+=(unsigned char)(ce_ptr-mac_header_control_elements);
939 940 941
  }

  return((unsigned char*)mac_header_ptr - mac_header);
942 943
  }
  #endif
944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979
*/
void add_common_dci(DCI_PDU *DCI_pdu,
		    void *pdu,
		    u16 rnti,
		    unsigned char dci_size_bytes,
		    unsigned char aggregation,
		    unsigned char dci_size_bits,
		    unsigned char dci_fmt,
		    u8 ra_flag) {

  memcpy(&DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].dci_pdu[0],pdu,dci_size_bytes);
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].dci_length = dci_size_bits;
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].L          = aggregation;
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].rnti       = rnti;
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].format     = dci_fmt;
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].ra_flag    = ra_flag;


  DCI_pdu->Num_common_dci++;
}

void add_ue_spec_dci(DCI_PDU *DCI_pdu,void *pdu,u16 rnti,unsigned char dci_size_bytes,unsigned char aggregation,unsigned char dci_size_bits,unsigned char dci_fmt,u8 ra_flag) {

  memcpy(&DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].dci_pdu[0],pdu,dci_size_bytes);
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].dci_length = dci_size_bits;
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].L          = aggregation;
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].rnti       = rnti;
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].format     = dci_fmt;
  DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].ra_flag    = ra_flag;

  DCI_pdu->Num_ue_spec_dci++;
}

void schedule_SI(unsigned char Mod_id,u32 frame, unsigned char *nprb,unsigned int *nCCE) {

  unsigned char bcch_sdu_length;
980 981
  int mcs;
  void *BCCH_alloc_pdu=(void*)&eNB_mac_inst[Mod_id].BCCH_alloc_pdu;
982 983 984 985

  bcch_sdu_length = mac_rrc_data_req(Mod_id,
				     frame,
				     BCCH,1,
986
				     &eNB_mac_inst[Mod_id].BCCH_pdu.payload[0],
987
				     1,
988 989
				     Mod_id,
				     0); // not used in this case 
990 991 992
  if (bcch_sdu_length > 0) {
    LOG_D(MAC,"[eNB %d] Frame %d : BCCH->DLSCH, Received %d bytes \n",Mod_id,frame,bcch_sdu_length);

993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012

    if (bcch_sdu_length <= (mac_xface->get_TBS_DL(0,3)))
      mcs=0;
    else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(1,3)))
      mcs=1;
    else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(2,3)))
      mcs=2;
    else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(3,3)))
      mcs=3;
    else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(4,3)))
      mcs=4;
    else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(5,3)))
      mcs=5;
    else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(6,3)))
      mcs=6;
    else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(7,3)))
      mcs=7;
    else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(8,3)))
      mcs=8;
    
1013
    if (mac_xface->lte_frame_parms->frame_type == TDD) {
1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
      switch (mac_xface->lte_frame_parms->N_RB_DL) {
      case 6:
	((DCI1A_1_5MHz_TDD_1_6_t*)BCCH_alloc_pdu)->mcs = mcs;
	break;
      case 25:
	((DCI1A_5MHz_TDD_1_6_t*)BCCH_alloc_pdu)->mcs = mcs;
	break;
      case 50:
	((DCI1A_10MHz_TDD_1_6_t*)BCCH_alloc_pdu)->mcs = mcs;
	break;
      case 100:
	((DCI1A_20MHz_TDD_1_6_t*)BCCH_alloc_pdu)->mcs = mcs;
	break;

      }
1029 1030
    }
    else {
1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045
      switch (mac_xface->lte_frame_parms->N_RB_DL) {
      case 6:
	((DCI1A_1_5MHz_FDD_t*)BCCH_alloc_pdu)->mcs = mcs;
	break;
      case 25:
	((DCI1A_5MHz_FDD_t*)BCCH_alloc_pdu)->mcs = mcs;
	break;
      case 50:
	((DCI1A_10MHz_FDD_t*)BCCH_alloc_pdu)->mcs = mcs;
	break;
      case 100:
	((DCI1A_20MHz_FDD_t*)BCCH_alloc_pdu)->mcs = mcs;
	break;

      }
1046 1047 1048 1049
    }

#if defined(USER_MODE) && defined(OAI_EMU)
    if (oai_emulation.info.opt_enabled)
1050
      trace_pdu(1, &eNB_mac_inst[Mod_id].BCCH_pdu.payload[0], bcch_sdu_length,
1051 1052 1053 1054 1055 1056 1057 1058 1059
                0xffff, 4, 0xffff, eNB_mac_inst[Mod_id].subframe, 0, 0);
    LOG_D(OPT,"[eNB %d][BCH] Frame %d trace pdu for rnti %x with size %d\n", 
          Mod_id, frame, 0xffff, bcch_sdu_length);
#endif

    if (mac_xface->lte_frame_parms->frame_type == TDD) {
      LOG_D(MAC,"[eNB] Frame %d : Scheduling BCCH->DLSCH (TDD) for SI %d bytes (mcs %d, rb 3, TBS %d)\n",
	    frame,
	    bcch_sdu_length,
1060 1061
	    mcs,
	    mac_xface->get_TBS_DL(mcs,3));
1062 1063 1064 1065 1066
    }
    else {
      LOG_D(MAC,"[eNB] Frame %d : Scheduling BCCH->DLSCH (FDD) for SI %d bytes (mcs %d, rb 3, TBS %d)\n",
	    frame,
	    bcch_sdu_length,
1067 1068
	    mcs,
	    mac_xface->get_TBS_DL(mcs,3));
1069 1070 1071 1072 1073 1074 1075 1076
    }
    eNB_mac_inst[Mod_id].bcch_active=1;
    *nprb=3;
    *nCCE=4;
    return;
  }
  eNB_mac_inst[Mod_id].bcch_active=0;
  *nprb=0;
1077 1078 1079
  *nCCE=0; 
  //LOG_D(MAC,"[eNB %d] Frame %d : BCCH not active \n",Mod_id,frame);

1080 1081 1082
}

#ifdef Rel10
1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095
s8 get_mbsfn_sf_alloction (unsigned char Mod_id, u8 mbsfn_sync_area){
  // currently there is one-to-one mapping between sf allocation pattern and sync area
  if (mbsfn_sync_area > MAX_MBSFN_AREA){
    LOG_W(MAC,"[eNB %d] MBSFN synchronization area %d out of range\n ", Mod_id, mbsfn_sync_area); 
    return -1;
  }
  else if (eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[mbsfn_sync_area] != NULL)
    return mbsfn_sync_area; 
  else {
    LOG_W(MAC,"[eNB %d] MBSFN Subframe Config pattern %d not found \n ", Mod_id, mbsfn_sync_area); 
    return -1;
  }
}
1096 1097 1098 1099

int schedule_MBMS(unsigned char Mod_id,u32 frame, u8 subframe) {

  int mcch_flag=0,mtch_flag=0, msi_flag=0;
1100 1101
  int mbsfn_period =0;// 1<<(eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[0]->radioframeAllocationPeriod);
  int mcch_period = 0;//32<<(eNB_mac_inst[Mod_id].mbsfn_AreaInfo[0]->mcch_Config_r9.mcch_RepetitionPeriod_r9);
1102 1103 1104 1105 1106 1107 1108
  int mch_scheduling_period = 8<<(eNB_mac_inst[Mod_id].pmch_Config[0]->mch_SchedulingPeriod_r9); 
  unsigned char mcch_sdu_length;
  unsigned char header_len_mcch=0,header_len_msi=0,header_len_mtch=0, header_len_mtch_temp=0, header_len_mcch_temp=0, header_len_msi_temp=0; 
  int ii=0, msi_pos=0;
  int mcch_mcs;
  u16 TBS,j,padding=0,post_padding=0;
  mac_rlc_status_resp_t rlc_status;
1109
  int num_mtch;
1110
  int msi_length,i,k;
1111 1112 1113 1114
  unsigned char sdu_lcids[11], num_sdus=0, offset=0;
  u16 sdu_lengths[11], sdu_length_total=0;
  unsigned char mch_buffer[MAX_DLSCH_PAYLOAD_BYTES]; // check the max value, this is for dlsch only

1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129
  eNB_mac_inst[Mod_id].MCH_pdu.Pdu_size=0;

  for (i=0; 
       i< eNB_mac_inst[Mod_id].num_active_mbsfn_area;
       i++ ){ 
    // assume, that there is always a mapping
    if ((j=get_mbsfn_sf_alloction(Mod_id,i)) == -1)
      return 0;
    
    mbsfn_period = 1<<(eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->radioframeAllocationPeriod);
    mcch_period = 32<<(eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_RepetitionPeriod_r9);
    msi_pos=0; ii=0;
    LOG_D(MAC,"[eNB %d] Frame %d subframe %d : Checking MBSFN Sync Area %d/%d with SF allocation %d/%d for MCCH and MTCH (mbsfn period %d, mcch period %d)\n", 
	  Mod_id,frame, subframe,i,eNB_mac_inst[Mod_id].num_active_mbsfn_area,
	  j,eNB_mac_inst[Mod_id].num_sf_allocation_pattern,mbsfn_period,mcch_period);
1130

1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149
   
    switch (eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.signallingMCS_r9) {
    case 0:
      mcch_mcs = 2;
      break;
    case 1:
      mcch_mcs = 7;
      break;
    case 2:
      mcch_mcs = 13;
      break;
    case 3:
      mcch_mcs = 19;
      break;
    }
  
    // 1st: Check the MBSFN subframes from SIB2 info (SF allocation pattern i, max 8 non-overlapping patterns exist)
    if (frame %  mbsfn_period == eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->radioframeAllocationOffset){ // MBSFN frame
      if (eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.present == MBSFN_SubframeConfig__subframeAllocation_PR_oneFrame){// one-frame format
1150 1151

      //  Find the first subframe in this MCH to transmit MSI
1152 1153 1154 1155 1156 1157
	if (frame % mch_scheduling_period == eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->radioframeAllocationOffset ) {
	  while (ii == 0) {
	    ii = eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & (0x80>>msi_pos);
	    msi_pos++;
	  }
	  //LOG_D(MAC,"[eNB %d] Frame %d subframe %d : sync area %d sf allocation pattern %d sf alloc %x msi pos is %d \n", Mod_id,frame, subframe,i,j,eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0], msi_pos);
1158 1159 1160
	}
      
      // Check if the subframe is for MSI, MCCH or MTCHs and Set the correspoding flag to 1
1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171
	switch (subframe) {     
	case 1:
	  if (mac_xface->lte_frame_parms->frame_type == FDD) {      
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF1) == MBSFN_FDD_SF1) {
	      if (msi_pos == 1) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF1) == MBSFN_FDD_SF1) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
1172
	  }
1173
	  break;
1174
	
1175 1176 1177 1178 1179 1180 1181 1182 1183 1184
	case 2:
	  if (mac_xface->lte_frame_parms->frame_type == FDD){
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF2) == MBSFN_FDD_SF2) {
	      if (msi_pos == 2) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF2) == MBSFN_FDD_SF2) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
1185
	  }
1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197
	  break;
	  
	case 3:
	  if (mac_xface->lte_frame_parms->frame_type == TDD){// TDD
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF3) == MBSFN_TDD_SF3) {
	      if (msi_pos == 1) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF3) == MBSFN_TDD_SF3) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
1198
	  }
1199 1200 1201 1202 1203 1204 1205 1206 1207
	  else {// FDD
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF3) == MBSFN_FDD_SF3) {
	      if (msi_pos == 3) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF3) == MBSFN_FDD_SF3) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
1208
	  }
1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220
	  break;
	  
	case 4:
	  if (mac_xface->lte_frame_parms->frame_type == TDD){
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF4) == MBSFN_TDD_SF4) {
	      if (msi_pos == 2) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF4) == MBSFN_TDD_SF4) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
1221
	  }
1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233
	  break;
	  
	case 6:
	  if (mac_xface->lte_frame_parms->frame_type == FDD){
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF6) == MBSFN_FDD_SF6) {
	      if (msi_pos == 4) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF6) == MBSFN_FDD_SF6) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
1234 1235 1236
	  }
	break;
	
1237 1238 1239 1240 1241 1242 1243 1244 1245
	case 7:
	  if (mac_xface->lte_frame_parms->frame_type == TDD){ // TDD
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF7) == MBSFN_TDD_SF7) {
	      if (msi_pos == 3) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF7) == MBSFN_TDD_SF7) )
		mcch_flag = 1;
	      mtch_flag = 1;
1246 1247
	  }
	  }
1248 1249 1250 1251 1252 1253 1254 1255 1256
	  else {// FDD
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF7) == MBSFN_FDD_SF7) {
	      if (msi_pos == 5) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF7) == MBSFN_FDD_SF7) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
1257
	  }
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269
	  break;
	  
	case 8:
	  if (mac_xface->lte_frame_parms->frame_type == TDD){ //TDD
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF8) == MBSFN_TDD_SF8) {
	      if (msi_pos == 4) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF8) == MBSFN_TDD_SF8) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
1270
	  }
1271 1272 1273 1274 1275 1276 1277 1278 1279
	  else{ // FDD
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF8) == MBSFN_FDD_SF8) {
	      if (msi_pos == 6) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF8) == MBSFN_FDD_SF8) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
1280
	  }
1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
	  break;
	  
	case 9:
	  if (mac_xface->lte_frame_parms->frame_type == TDD){
	    if ((eNB_mac_inst[Mod_id].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF9) == MBSFN_TDD_SF9) {
	      if (msi_pos == 5) 
		msi_flag = 1;
	      if ( (frame % mcch_period == eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.mcch_Offset_r9) && 
		   ((eNB_mac_inst[Mod_id].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF9) == MBSFN_TDD_SF9) )
		mcch_flag = 1;
	      mtch_flag = 1;
	    }
	  }
	  break;
	}// end switch
	// sf allocation is non-overlapping
        if ((msi_flag==1) || (mcch_flag==1) || (mtch_flag==1)){
	  LOG_D(MAC,"[eNB %d] Frame %d Subframe %d: sync area %d SF alloc %d: msi flag %d, mcch flag %d, mtch flag %d\n",
		Mod_id, frame, subframe,i,j,msi_flag,mcch_flag,mtch_flag);
	  break;
1301
	}
1302 1303 1304
      }
      else {// four-frame format
      }
1305
    }
1306 1307 1308 1309
  } // end of for loop 
  eNB_mac_inst[Mod_id].msi_active=0;
  eNB_mac_inst[Mod_id].mcch_active=0;
  eNB_mac_inst[Mod_id].mtch_active=0;
1310
    // Calculate the mcs
1311 1312 1313 1314 1315 1316
  if ((msi_flag==1) || (mcch_flag==1)) {
    eNB_mac_inst[Mod_id].MCH_pdu.mcs = mcch_mcs;
  }
  else if (mtch_flag == 1) { // only MTCH in this subframe 
    eNB_mac_inst[Mod_id].MCH_pdu.mcs = eNB_mac_inst[Mod_id].pmch_Config[0]->dataMCS_r9;
  }
1317
  
1318 1319
  
  // 2nd: Create MSI, get MCCH from RRC and MTCHs from RLC
1320
 
1321
  // there is MSI (MCH Scheduling Info) 
1322
  if (msi_flag == 1) {
1323
    // Create MSI here
1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337
    u16 msi_control_element[29], *msi_ptr;
   
    msi_ptr = &msi_control_element[0];
    ((MSI_ELEMENT *) msi_ptr)->lcid = MCCH_LCHANID; //MCCH
    if (mcch_flag==1) {   
      ((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0;
      ((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0;
    }
    else {                    // no mcch for this MSP
      ((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0x7;// stop value is 2047
      ((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0xff;
    }
    msi_ptr+= sizeof(MSI_ELEMENT);

1338
         //Header for MTCHs
1339
    num_mtch = eNB_mac_inst[Mod_id].mbms_SessionList[0]->list.count;
1340 1341
    for (k=0;k<num_mtch;k++) { // loop for all session in this MCH (MCH[0]) at this moment
      ((MSI_ELEMENT *) msi_ptr)->lcid = eNB_mac_inst[Mod_id].mbms_SessionList[0]->list.array[k]->logicalChannelIdentity_r9;//mtch_lcid;
1342 1343 1344 1345 1346 1347 1348 1349 1350 1351
      ((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0; // last subframe of this mtch (only one mtch now)
      ((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0xB;
      msi_ptr+=sizeof(MSI_ELEMENT);
    }
    msi_length = msi_ptr-msi_control_element;
    if (msi_length<128)
      header_len_msi = 2;
    else 
      header_len_msi = 3;

1352 1353 1354
    LOG_D(MAC,"[eNB %d] Frame %d : MSI->MCH, length of MSI is %d bytes \n",Mod_id,frame,msi_length);
    //LOG_D(MAC,"Scheduler: MSI is transmitted in this subframe \n" );

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    //   LOG_D(MAC,"Scheduler: MSI length is %d bytes\n",msi_length);
    // Store MSI data to mch_buffer[0]
    memcpy((char *)&mch_buffer[sdu_length_total],
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	   msi_control_element,
	   msi_length);
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    sdu_lcids[num_sdus] = MCH_SCHDL_INFO;
    sdu_lengths[num_sdus] = msi_length;
    sdu_length_total += sdu_lengths[num_sdus];
    LOG_I(MAC,"[eNB %d] Create %d bytes for MSI\n",Mod_id,sdu_lengths[num_sdus]); 
    num_sdus++;
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    eNB_mac_inst[Mod_id].msi_active=1;
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  }
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  // there is MCCH
  if (mcch_flag == 1) {
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    LOG_D(MAC,"[eNB %d] Frame %d Subframe %d: Schedule MCCH MESSAGE (area %d, sfAlloc %d)\n",
	  Mod_id,frame, subframe, i, j);
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    mcch_sdu_length = mac_rrc_data_req(Mod_id,
				       frame,
				       MCCH,1,
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				       &eNB_mac_inst[Mod_id].MCCH_pdu.payload[0],
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				       1,// this is eNB
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				       Mod_id, // index 
				       i); // this is the mbsfn sync area index 

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    if (mcch_sdu_length > 0) {
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      LOG_D(MAC,"[eNB %d] Frame %d subframe %d : MCCH->MCH, Received %d bytes from RRC \n",Mod_id,frame,subframe,mcch_sdu_length);
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      header_len_mcch = 2; 
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      if (mac_xface->lte_frame_parms->frame_type == TDD) {
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	LOG_D(MAC,"[eNB %d] Frame %d subframe %d: Scheduling MCCH->MCH (TDD) for MCCH message %d bytes (mcs %d )\n", 
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	      Mod_id,
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	      frame,subframe, 
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	      mcch_sdu_length,
	      mcch_mcs);
      }
      else {
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	LOG_I(MAC,"[eNB %d] Frame %d subframe %d: Scheduling MCCH->MCH (FDD) for MCCH message %d bytes (mcs %d)\n",
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	      Mod_id,
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	      frame, subframe,
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	      mcch_sdu_length,
	      mcch_mcs); 
      }
      eNB_mac_inst[Mod_id].mcch_active=1;

      memcpy((char *)&mch_buffer[sdu_length_total], 
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	     &eNB_mac_inst[Mod_id].MCCH_pdu.payload[0], 
	     mcch_sdu_length);
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      sdu_lcids[num_sdus] = MCCH_LCHANID; 
      sdu_lengths[num_sdus] = mcch_sdu_length;
      if (sdu_lengths[num_sdus]>128)
	header_len_mcch = 3;
      sdu_length_total += sdu_lengths[num_sdus];
      LOG_D(MAC,"[eNB %d] Got %d bytes for MCCH from RRC \n",Mod_id,sdu_lengths[num_sdus]);
      num_sdus++;
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    } 
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  }
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  TBS = mac_xface->get_TBS_DL(eNB_mac_inst[Mod_id].MCH_pdu.mcs, mac_xface->lte_frame_parms->N_RB_DL);
#ifdef Rel10 
  // do not let mcch and mtch multiplexing when relaying is active 
  // for sync area 1, so not transmit data 
  //if ((i == 0) && ((eNB_mac_inst[Mod_id].MBMS_flag != multicast_relay) || (eNB_mac_inst[Mod_id].mcch_active==0))) {
#endif 
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     // there is MTCHs, loop if there are more than 1
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  if (mtch_flag == 1) {
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        // Calculate TBS
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    /* if ((msi_flag==1) || (mcch_flag==1)) {
       TBS = mac_xface->get_TBS(mcch_mcs, mac_xface->lte_frame_parms->N_RB_DL);
       }
       else { // only MTCH in this subframe 
       TBS = mac_xface->get_TBS(eNB_mac_inst[Mod_id].pmch_Config[0]->dataMCS_r9, mac_xface->lte_frame_parms->N_RB_DL);
       }
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    */
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    // get MTCH data from RLC (like for DTCH)
    LOG_D(MAC,"[eNB %d] Frame %d subframe %d: Schedule MTCH (area %d, sfAlloc %d)\n",Mod_id,frame,subframe,i,j);  
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    header_len_mtch = 3;
	  LOG_D(MAC,"[eNB %d], Frame %d, MTCH->MCH, Checking RLC status (rab %d, tbs %d, len %d)\n",
	  Mod_id,frame,MTCH,TBS,
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	  TBS-header_len_mcch-header_len_msi-sdu_length_total-header_len_mtch);
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    rlc_status = mac_rlc_status_ind(Mod_id,frame,1,RLC_MBMS_YES,MTCH+ (maxDRB + 3) * MAX_MOBILES_PER_RG,
				    TBS-header_len_mcch-header_len_msi-sdu_length_total-header_len_mtch);
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    //printf("frame %d, subframe %d,  rlc_status.bytes_in_buffer is %d\n",frame,subframe, rlc_status.bytes_in_buffer);
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    if (rlc_status.bytes_in_buffer >0) {
      LOG_I(MAC,"[eNB %d][MBMS USER-PLANE], Frame %d, MTCH->MCH, Requesting %d bytes from RLC (header len mtch %d)\n",
	    Mod_id,frame,TBS-header_len_mcch-header_len_msi-sdu_length_total-header_len_mtch,header_len_mtch);
      
      sdu_lengths[num_sdus] = mac_rlc_data_req(Mod_id,frame, RLC_MBMS_YES,
					       MTCH + (maxDRB + 3) * MAX_MOBILES_PER_RG,
					       (char*)&mch_buffer[sdu_length_total]);
      //sdu_lengths[num_sdus] = mac_rlc_data_req(Mod_id,frame, RLC_MBMS_NO,  MTCH+(MAX_NUM_RB*(NUMBER_OF_UE_MAX+1)), (char*)&mch_buffer[sdu_length_total]);
      LOG_I(MAC,"[eNB %d][MBMS USER-PLANE] Got %d bytes for MTCH %d\n",Mod_id,sdu_lengths[num_sdus],MTCH);
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      eNB_mac_inst[Mod_id].mtch_active=1;
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      sdu_lcids[num_sdus] = MTCH;
      sdu_length_total += sdu_lengths[num_sdus];
      if (sdu_lengths[num_sdus] < 128)
	header_len_mtch = 2;
      num_sdus++;
    }
    else {
      header_len_mtch = 0;    
    }
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  }
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#ifdef Rel10
  //  }
#endif
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  // FINAL STEP: Prepare and multiplexe MSI, MCCH and MTCHs
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  if ((sdu_length_total + header_len_msi + header_len_mcch + header_len_mtch) >0) {
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    // Adjust the last subheader
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    /*                                 if ((msi_flag==1) || (mcch_flag==1)) {
                                         eNB_mac_inst[Mod_id].MCH_pdu.mcs = mcch_mcs;
                                          }
                                        else if (mtch_flag == 1) { // only MTCH in this subframe 
                                       eNB_mac_inst[Mod_id].MCH_pdu.mcs = eNB_mac_inst[Mod_id].pmch_Config[0]->dataMCS_r9;
                                          }
    */
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    header_len_mtch_temp = header_len_mtch;
    header_len_mcch_temp = header_len_mcch;
    header_len_msi_temp = header_len_msi;
    if (header_len_mtch>0)
      header_len_mtch=1;         // remove Length field in the  subheader for the last PDU
    else if (header_len_mcch>0)
      header_len_mcch=1;
    else header_len_msi=1;
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    // Calculate the padding
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    if ((TBS - header_len_mtch - header_len_mcch - header_len_msi - sdu_length_total) <= 2) {
      padding = (TBS - header_len_mtch - header_len_mcch - header_len_msi - sdu_length_total);
      post_padding = 0;
    }
    else {// using post_padding, give back the Length field of subheader  for the last PDU
      padding = 0;
      if (header_len_mtch>0)
	header_len_mtch = header_len_mtch_temp;
      else if (header_len_mcch>0)
	header_len_mcch = header_len_mcch_temp;
      else header_len_msi = header_len_msi_temp;
      post_padding = TBS - sdu_length_total - header_len_msi - header_len_mcch - header_len_mtch;
    }
    // Generate the MAC Header for MCH
    // here we use the function for DLSCH because DLSCH & MCH have the same Header structure
    offset = generate_dlsch_header((unsigned char*)eNB_mac_inst[Mod_id].MCH_pdu.payload,
				   num_sdus, 
				   sdu_lengths, 
				   sdu_lcids,
				   255,    // no drx
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				   0,  // no timing advance
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				   NULL,  // no contention res id
				   padding,                        
				   post_padding);

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    eNB_mac_inst[Mod_id].MCH_pdu.Pdu_size=TBS;
    eNB_mac_inst[Mod_id].MCH_pdu.sync_area=i;
    eNB_mac_inst[Mod_id].MCH_pdu.msi_active= eNB_mac_inst[Mod_id].msi_active;
    eNB_mac_inst[Mod_id].MCH_pdu.mcch_active= eNB_mac_inst[Mod_id].mcch_active;
    eNB_mac_inst[Mod_id].MCH_pdu.mtch_active= eNB_mac_inst[Mod_id].mtch_active;
    LOG_D(MAC," MCS for this sf is %d (mcch active %d, mtch active %d)\n", eNB_mac_inst[Mod_id].MCH_pdu.mcs,
	  eNB_mac_inst[Mod_id].MCH_pdu.mcch_active,eNB_mac_inst[Mod_id].MCH_pdu.mtch_active );
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    LOG_I(MAC,"[eNB %d][MBMS USER-PLANE ] Generate header : sdu_length_total %d, num_sdus %d, sdu_lengths[0] %d, sdu_lcids[0] %d => payload offset %d,padding %d,post_padding %d (mcs %d, TBS %d), header MTCH %d, header MCCH %d, header MSI %d\n",
	  Mod_id,sdu_length_total,num_sdus,sdu_lengths[0],sdu_lcids[0],offset,padding,post_padding,eNB_mac_inst[Mod_id].MCH_pdu.mcs,TBS,header_len_mtch, header_len_mcch, header_len_msi);
    // copy SDU to mch_pdu after the MAC Header
    memcpy(&eNB_mac_inst[Mod_id].MCH_pdu.payload[offset],mch_buffer,sdu_length_total);
    // filling remainder of MCH with random data if necessery
    for (j=0;j<(TBS-sdu_length_total-offset);j++)
      eNB_mac_inst[Mod_id].MCH_pdu.payload[offset+sdu_length_total+j] = (char)(taus()&0xff);
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#if defined(USER_MODE) && defined(OAI_EMU)
        /* Tracing of PDU is done on UE side */
	if (oai_emulation.info.opt_enabled)
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            trace_pdu(1, (uint8_t *)eNB_mac_inst[Mod_id].MCH_pdu.payload,
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		      TBS, Mod_id, 6, 0xffff,  // M_RNTI = 6 in wirehsark
		      eNB_mac_inst[Mod_id].subframe,0,0);
	LOG_D(OPT,"[eNB %d][MCH] Frame %d : MAC PDU with size %d\n", 
	      Mod_id, frame, TBS);
#endif
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/*    
   for (j=0;j<sdu_length_total;j++)
      printf("%2x.",eNB_mac_inst[Mod_id].MCH_pdu.payload[j+offset]);
      printf(" \n");*/
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    return 1;
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  } 
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  else {
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    eNB_mac_inst[Mod_id].MCH_pdu.Pdu_size=0;
    eNB_mac_inst[Mod_id].MCH_pdu.sync_area=0;
    eNB_mac_inst[Mod_id].MCH_pdu.msi_active=0;
    eNB_mac_inst[Mod_id].MCH_pdu.mcch_active=0;
    eNB_mac_inst[Mod_id].MCH_pdu.mtch_active=0;
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    // for testing purpose, fill with random data 
    //for (j=0;j<(TBS-sdu_length_total-offset);j++)
    //  eNB_mac_inst[Mod_id].MCH_pdu.payload[offset+sdu_length_total+j] = (char)(taus()&0xff);
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    return 0;
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  }
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  //this is for testing 
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  /*  
  if (mtch_flag == 1) {
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  //  LOG_D(MAC,"DUY: mch_buffer length so far is : %ld\n", &mch_buffer[sdu_length_total]-&mch_buffer[0]);
  return 1;
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  }
  else 
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  return 0;
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  */
}

MCH_PDU *get_mch_sdu(uint8_t Mod_id,uint32_t frame, uint32_t subframe) {
  //  eNB_mac_inst[Mod_id].MCH_pdu.mcs=0;
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  //LOG_D(MAC," MCH_pdu.mcs is %d\n", eNB_mac_inst[Mod_id].MCH_pdu.mcs);
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  return(&eNB_mac_inst[Mod_id].MCH_pdu);
}

#endif
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// First stage of Random-Access Scheduling
void schedule_RA(unsigned char Mod_id,u32 frame, unsigned char subframe,unsigned char Msg3_subframe,unsigned char *nprb,unsigned int *nCCE) {

  RA_TEMPLATE *RA_template = (RA_TEMPLATE *)&eNB_mac_inst[Mod_id].RA_template[0];
  unsigned char i;//,harq_pid,round;
  u16 rrc_sdu_length;
  unsigned char lcid,offset;
  s8 UE_id;
  unsigned short TBsize,msg4_padding,msg4_post_padding,msg4_header;

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

    if (RA_template[i].RA_active == 1) {

      LOG_I(MAC,"[eNB %d][RAPROC] RA %d is active (generate RAR %d, generate_Msg4 %d, wait_ack_Msg4 %d, rnti %x)\n",
	    Mod_id,i,RA_template[i].generate_rar,RA_template[i].generate_Msg4,RA_template[i].wait_ack_Msg4, RA_template[i].rnti);

      if (RA_template[i].generate_rar == 1) {
	*nprb= (*nprb) + 3;
	*nCCE = (*nCCE) + 4;
	RA_template[i].Msg3_subframe=Msg3_subframe;
      }
      else if (RA_template[i].generate_Msg4 == 1) {

	// check for Msg4 Message
	UE_id = find_UE_id(Mod_id,RA_template[i].rnti);
	if (Is_rrc_registered == 1) {

	  // Get RRCConnectionSetup for Piggyback
	  rrc_sdu_length = mac_rrc_data_req(Mod_id,
					    frame,
					    CCCH,1,
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					    &eNB_mac_inst[Mod_id].CCCH_pdu.payload[0],
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					    1,
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					    Mod_id,
					    0); // not used in this case 
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	  if (rrc_sdu_length == -1)
	    mac_xface->macphy_exit("[MAC][eNB Scheduler] CCCH not allocated\n");
	  else {
	    //msg("[MAC][eNB %d] Frame %d, subframe %d: got %d bytes from RRC\n",Mod_id,frame, subframe,rrc_sdu_length);
	  }
	}

	LOG_I(MAC,"[eNB %d][RAPROC] Frame %d, subframe %d: UE_id %d, Is_rrc_registered %d, rrc_sdu_length %d\n",
	      Mod_id,frame, subframe,UE_id, Is_rrc_registered,rrc_sdu_length);

	if (rrc_sdu_length>0) {
	  LOG_I(MAC,"[eNB %d][RAPROC] Frame %d, subframe %d: Generating Msg4 with RRC Piggyback (RA proc %d, RNTI %x)\n",
		Mod_id,frame, subframe,i,RA_template[i].rnti);

	  //msg("[MAC][eNB %d][RAPROC] Frame %d, subframe %d: Received %d bytes for Msg4: \n",Mod_id,frame,subframe,rrc_sdu_length);
	  //	  for (j=0;j<rrc_sdu_length;j++)
	  //	    msg("%x ",(unsigned char)eNB_mac_inst[Mod_id].CCCH_pdu.payload[j]);
	  //	  msg("\n");
	  //	  msg("[MAC][eNB] Frame %d, subframe %d: Generated DLSCH (Msg4) DCI, format 1A, for UE %d\n",frame, subframe,UE_id);
	  // Schedule Reflection of Connection request



	  // Compute MCS for 3 PRB
	  msg4_header = 1+6+1;  // CR header, CR CE, SDU header
	  if (mac_xface->lte_frame_parms->frame_type == TDD) {

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	    switch (mac_xface->lte_frame_parms->N_RB_DL) {
	    case 6:
	      ((DCI1A_1_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->ndi=1;
	      
	      if ((rrc_sdu_length+msg4_header) <= 22) {
		((DCI1A_1_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=4;
		TBsize = 22;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 28) {
		((DCI1A_1_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=5;
		TBsize = 28;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 32) {
		((DCI1A_1_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=6;
		TBsize = 32;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 41) {
		((DCI1A_1_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=7;
		TBsize = 41;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 49) {
		((DCI1A_1_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=8;
		TBsize = 49;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 57) {
		((DCI1A_1_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=9;
		TBsize = 57;
	      }
	      break;
	    case 25:
	      
	      ((DCI1A_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->ndi=1;
	      
	      if ((rrc_sdu_length+msg4_header) <= 22) {
		((DCI1A_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=4;
		TBsize = 22;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 28) {
		((DCI1A_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=5;
		TBsize = 28;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 32) {
		((DCI1A_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=6;
		TBsize = 32;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 41) {
		((DCI1A_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=7;
		TBsize = 41;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 49) {
		((DCI1A_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=8;
		TBsize = 49;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 57) {
		((DCI1A_5MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=9;
		TBsize = 57;
	      }
	      break;
	    case 50:
	      
	      ((DCI1A_10MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->ndi=1;
	      
	      if ((rrc_sdu_length+msg4_header) <= 22) {
		((DCI1A_10MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=4;
		TBsize = 22;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 28) {
		((DCI1A_10MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=5;
		TBsize = 28;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 32) {
		((DCI1A_10MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=6;
		TBsize = 32;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 41) {
		((DCI1A_10MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=7;
		TBsize = 41;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 49) {
		((DCI1A_10MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=8;
		TBsize = 49;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 57) {
		((DCI1A_10MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=9;
		TBsize = 57;
	      }
	      break;
	    case 100:
	      
	      ((DCI1A_20MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->ndi=1;
	      
	      if ((rrc_sdu_length+msg4_header) <= 22) {
		((DCI1A_20MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=4;
		TBsize = 22;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 28) {
		((DCI1A_20MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=5;
		TBsize = 28;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 32) {
		((DCI1A_20MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=6;
		TBsize = 32;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 41) {
		((DCI1A_20MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=7;
		TBsize = 41;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 49) {
		((DCI1A_20MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=8;
		TBsize = 49;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 57) {
		((DCI1A_20MHz_TDD_1_6_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=9;
		TBsize = 57;
	      }
	      break;
1749 1750 1751
	    }
	  }
	  else { // FDD DCI
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	    switch (mac_xface->lte_frame_parms->N_RB_DL) {
	    case 6:
	      ((DCI1A_1_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->ndi=1;
	      
	      if ((rrc_sdu_length+msg4_header) <= 22) {
		((DCI1A_1_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=4;
		TBsize = 22;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 28) {
		((DCI1A_1_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=5;
		TBsize = 28;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 32) {
		((DCI1A_1_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=6;
		TBsize = 32;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 41) {
		((DCI1A_1_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=7;
		TBsize = 41;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 49) {
		((DCI1A_1_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=8;
		TBsize = 49;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 57) {
		((DCI1A_1_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=9;
		TBsize = 57;
	      }
	      break;
	    case 25:
	      ((DCI1A_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->ndi=1;
	      
	      if ((rrc_sdu_length+msg4_header) <= 22) {
		((DCI1A_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=4;
		TBsize = 22;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 28) {
		((DCI1A_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=5;
		TBsize = 28;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 32) {
		((DCI1A_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=6;
		TBsize = 32;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 41) {
		((DCI1A_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=7;
		TBsize = 41;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 49) {
		((DCI1A_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=8;
		TBsize = 49;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 57) {
		((DCI1A_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=9;
		TBsize = 57;
	      }
	      break;
	    case 50:
	      ((DCI1A_10MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->ndi=1;
	      
	      if ((rrc_sdu_length+msg4_header) <= 22) {
		((DCI1A_10MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=4;
		TBsize = 22;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 28) {
		((DCI1A_10MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=5;
		TBsize = 28;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 32) {
		((DCI1A_10MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=6;
		TBsize = 32;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 41) {
		((DCI1A_10MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=7;
		TBsize = 41;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 49) {
		((DCI1A_10MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=8;
		TBsize = 49;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 57) {
		((DCI1A_5MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=9;
		TBsize = 57;
	      }
	      break;
	    case 100:
	      ((DCI1A_20MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->ndi=1;
	      
	      if ((rrc_sdu_length+msg4_header) <= 22) {
		((DCI1A_20MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=4;
		TBsize = 22;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 28) {
		((DCI1A_20MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=5;
		TBsize = 28;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 32) {
		((DCI1A_20MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=6;
		TBsize = 32;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 41) {
		((DCI1A_20MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=7;
		TBsize = 41;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 49) {
		((DCI1A_20MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=8;
		TBsize = 49;
	      }
	      else if ((rrc_sdu_length+msg4_header) <= 57) {
		((DCI1A_20MHz_FDD_t*)&RA_template[i].RA_alloc_pdu2[0])->mcs=9;
		TBsize = 57;
	      }
	      break;
1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896
	    }
	  }
	  RA_template[i].generate_Msg4=0;
	  RA_template[i].generate_Msg4_dci=1;
	  RA_template[i].wait_ack_Msg4=1;
	  RA_template[i].RA_active = 0;
	  lcid=0;

	  if ((TBsize - rrc_sdu_length - msg4_header) <= 2) {
	    msg4_padding = TBsize - rrc_sdu_length - msg4_header;
	    msg4_post_padding = 0;
	  }
	  else {
	    msg4_padding = 0;
	    msg4_post_padding = TBsize - rrc_sdu_length - msg4_header -1;
	  }
	  LOG_I(MAC,"[eNB %d][RAPROC] Frame %d subframe %d Msg4 : TBS %d, sdu_len %d, msg4_header %d, msg4_padding %d, msg4_post_padding %d\n",
		Mod_id,frame,subframe,TBsize,rrc_sdu_length,msg4_header,msg4_padding,msg4_post_padding); 
	  offset = generate_dlsch_header((unsigned char*)eNB_mac_inst[Mod_id].DLSCH_pdu[(unsigned char)UE_id][0].payload[0],
					 1,                           //num_sdus
					 &rrc_sdu_length,             //
					 &lcid,                       // sdu_lcid
					 255,                         // no drx
					 0,                           // no timing advance
					 RA_template[i].cont_res_id,  // contention res id
					 msg4_padding,                // no padding
					 msg4_post_padding);

	  memcpy((void*)&eNB_mac_inst[Mod_id].DLSCH_pdu[(unsigned char)UE_id][0].payload[0][(unsigned char)offset],
		 &eNB_mac_inst[Mod_id].CCCH_pdu.payload[0],
		 rrc_sdu_length);

1897 1898
#if defined(USER_MODE) && defined(OAI_EMU)
	  if (oai_emulation.info.opt_enabled){
1899
	    trace_pdu(1, (uint8_t *)eNB_mac_inst[Mod_id].DLSCH_pdu[(unsigned char)UE_id][0].payload[0],
1900 1901 1902 1903 1904 1905
                  rrc_sdu_length, UE_id, 3, find_UE_RNTI(Mod_id, UE_id),
                  eNB_mac_inst[Mod_id].subframe,0,0);
	    LOG_D(OPT,"[eNB %d][DLSCH] Frame %d trace pdu for rnti %x with size %d\n",
		  Mod_id, frame, find_UE_RNTI(Mod_id,UE_id), rrc_sdu_length);
	  }
#endif
1906 1907 1908 1909 1910 1911
	  *nprb= (*nprb) + 3;
	  *nCCE = (*nCCE) + 4;
	}
	//try here
      } 
      /*
1912
	else if (eNB_mac_inst[Mod_id].RA_template[i].wait_ack_Msg4==1) {
1913 1914 1915 1916 1917
	// check HARQ status and retransmit if necessary
	LOG_I(MAC,"[eNB %d][RAPROC] Frame %d, subframe %d: Checking if Msg4 was acknowledged :\n",Mod_id,frame,subframe);
	// Get candidate harq_pid from PHY
	mac_xface->get_ue_active_harq_pid(Mod_id,eNB_mac_inst[Mod_id].RA_template[i].rnti,subframe,&harq_pid,&round,0);
	if (round>0) {
1918 1919 1920
	*nprb= (*nprb) + 3;
	*nCCE = (*nCCE) + 4;
	}
1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964
	}
      */
    }
  }
}

// This has to be updated to include BSR information
u8 UE_is_to_be_scheduled(u8 Mod_id,u8 UE_id) {


  //  LOG_D(MAC,"[eNB %d][PUSCH] Frame %d subframe %d Scheduling UE %d\n",Mod_id,rnti,frame,subframe,
  //	UE_id);

  if ((eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID0]>0) ||
      (eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID1]>0) ||
      (eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID2]>0) || 
      (eNB_mac_inst[Mod_id].UE_template[UE_id].bsr_info[LCGID3]>0) || 
      (eNB_mac_inst[Mod_id].UE_template[UE_id].ul_SR>0)) // uplink scheduling request
    return(1);
  else 
    return(0);
}

u32 bytes_to_bsr_index(s32 nbytes) {

  u32 i=0;

  if (nbytes<0)
    return(0);

  while ((i<BSR_TABLE_SIZE)&&
	 (BSR_TABLE[i]<=nbytes)){
    i++;
  }
  return(i-1);
}

// This table holds the allowable PRB sizes for ULSCH transmissions
u8 rb_table[33] = {1,2,3,4,5,6,8,9,10,12,15,16,18,20,24,25,27,30,32,36,40,45,48,50,54,60,72,75,80,81,90,96,100};

void schedule_ulsch(unsigned char Mod_id,u32 frame,unsigned char cooperation_flag,unsigned char subframe,unsigned char sched_subframe,unsigned int *nCCE) {//,int calibration_flag) {

  unsigned char granted_UEs;
  unsigned int nCCE_available;
1965 1966


1967 1968 1969 1970 1971
  u16 first_rb=1,i;

  granted_UEs = find_ulgranted_UEs(Mod_id);
  nCCE_available = mac_xface->get_nCCE_max(Mod_id) - *nCCE;
 
1972 1973 1974 1975
  // UE data info;
  // check which UE has data to transmit
  // function to decide the scheduling
  // e.g. scheduling_rslt = Greedy(granted_UEs, nb_RB)
1976

1977 1978
  // default function for default scheduling
  // 
1979

1980
  // output of scheduling, the UE numbers in RBs, where it is in the code???
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  // check if RA (Msg3) is active in this subframe, 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++) {
    if ((eNB_mac_inst[Mod_id].RA_template[i].RA_active == 1) && 
	(eNB_mac_inst[Mod_id].RA_template[i].generate_rar == 0) &&
	(eNB_mac_inst[Mod_id].RA_template[i].Msg3_subframe == sched_subframe)) {  
      first_rb++; 
      break;
    }
  }
  
  schedule_ulsch_rnti(Mod_id, cooperation_flag, frame, subframe, sched_subframe, granted_UEs, nCCE, &nCCE_available, &first_rb);

#ifdef CBA
  if ((eNB_mac_inst[Mod_id].num_active_cba_groups > 0) && (*nCCE == 0))
    schedule_ulsch_cba_rnti(Mod_id, cooperation_flag, frame, subframe, sched_subframe, granted_UEs, nCCE, &nCCE_available, &first_rb);
#endif   
 
}
#ifdef CBA
void schedule_ulsch_cba_rnti(u8 Mod_id, unsigned char cooperation_flag, u32 frame, unsigned char subframe, unsigned char sched_subframe, u8 granted_UEs, unsigned int *nCCE, unsigned int *nCCE_available, u16 *first_rb){ 

  DCI0_5MHz_TDD_1_6_t *ULSCH_dci_tdd16;
  DCI0_5MHz_FDD_t *ULSCH_dci_fdd;
  DCI_PDU *DCI_pdu= &eNB_mac_inst[Mod_id].DCI_pdu;
  
  u8 rb_table_index=0, aggregation=2;
  u32 rballoc;
  u8 cba_group, cba_resources;
  u8 required_rbs[NUM_MAX_CBA_GROUP], weight[NUM_MAX_CBA_GROUP], num_cba_resources[NUM_MAX_CBA_GROUP];
  u8 available_rbs= ceil(mac_xface->lte_frame_parms->N_RB_UL-1-*first_rb);
  u8 remaining_rbs= available_rbs;
  u8 allocated_rbs;
  // We compute the weight of each group and initialize some variables
  for (cba_group=0;cba_group<eNB_mac_inst[Mod_id].num_active_cba_groups;cba_group++) {
    // UEs in PUSCH with traffic 
    weight[cba_group] = find_num_active_UEs_in_cbagroup(Mod_id, cba_group);
    required_rbs[cba_group] = 0;
    num_cba_resources[cba_group]=0;
  }
  //LOG_D(MAC, "[eNB ] CBA granted ues are %d\n",granted_UEs );
  for (cba_group=0;cba_group<eNB_mac_inst[Mod_id].num_active_cba_groups  && (*nCCE_available > (1<<aggregation));cba_group++) {
    if (remaining_rbs <= 0 ) 
      break;
    // If the group n