eNB_scheduler_primitives.c 18.3 KB
Newer Older
1
/*******************************************************************************
2 3
    OpenAirInterface
    Copyright(c) 1999 - 2014 Eurecom
4

5 6 7 8
    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
9 10


11 12 13 14
    OpenAirInterface is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
15

16 17 18 19
    You should have received a copy of the GNU General Public License
    along with OpenAirInterface.The full GNU General Public License is
   included in this distribution in the file called "COPYING". If not,
   see <http://www.gnu.org/licenses/>.
20 21

  Contact Information
22 23 24 25 26 27 28 29 30 31
  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
  OpenAirInterface Dev  : openair4g-devel@eurecom.fr

  Address      : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.

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

/*! \file eNB_scheduler_primitives.c
 * \brief primitives used by eNB for BCH, RACH, ULSCH, DLSCH scheduling
32 33 34
 * \author  Navid Nikaein and Raymond Knopp
 * \date 2010 - 2014
 * \email: navid.nikaein@eurecom.fr
35
 * \version 1.0
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92
 * @ingroup _mac

 */

#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/extern.h"

#include "LAYER2/MAC/proto.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"

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

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

#define ENABLE_MAC_PAYLOAD_DEBUG
#define DEBUG_eNB_SCHEDULER 1


void init_ue_sched_info(void){
  module_id_t 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;
      }
  }
}



Raymond Knopp's avatar
 
Raymond Knopp committed
93
unsigned char get_ue_weight(module_id_t module_idP, int ue_idP){
94

Raymond Knopp's avatar
 
Raymond Knopp committed
95
  return(eNB_dlsch_info[module_idP][ue_idP].weight);
96 97 98

}

Raymond Knopp's avatar
 
Raymond Knopp committed
99
DCI_PDU *get_dci_sdu(module_id_t module_idP, int CC_id,frame_t frameP, sub_frame_t subframeP) {
100

Raymond Knopp's avatar
 
Raymond Knopp committed
101
  return(&eNB_mac_inst[module_idP].common_channels[CC_id].DCI_pdu);
102 103 104

}

Raymond Knopp's avatar
 
Raymond Knopp committed
105
int find_UE_id(module_id_t mod_idP, rnti_t rntiP) {
106

Raymond Knopp's avatar
 
Raymond Knopp committed
107 108 109 110 111 112 113
  int UE_id;
  UE_list_t *UE_list = &eNB_mac_inst[mod_idP].UE_list;
  
  for (UE_id=UE_list->head;UE_id>=0;UE_id=UE_list->next[UE_id]){
    if (UE_list->UE_template[UE_PCCID(mod_idP,UE_id)][UE_id].rnti==rntiP) {
      return(UE_id);
    }
114
  }
Raymond Knopp's avatar
 
Raymond Knopp committed
115
  return(-1);
116 117 118

}

Raymond Knopp's avatar
 
Raymond Knopp committed
119 120 121
int UE_num_active_CC(UE_list_t *listP,int ue_idP) {
  return(listP->numactiveCCs[ue_idP]);
}
122

Raymond Knopp's avatar
 
Raymond Knopp committed
123 124 125
int UE_PCCID(module_id_t mod_idP,int ue_idP) {
  return(eNB_mac_inst[mod_idP].UE_list.pCC_id[ue_idP]);
}
126

Raymond Knopp's avatar
 
Raymond Knopp committed
127
rnti_t UE_RNTI(module_id_t mod_idP, int ue_idP) {
128

Raymond Knopp's avatar
 
Raymond Knopp committed
129
  rnti_t rnti = eNB_mac_inst[mod_idP].UE_list.UE_template[UE_PCCID(mod_idP,ue_idP)][ue_idP].rnti;
130

Raymond Knopp's avatar
 
Raymond Knopp committed
131 132 133 134 135
  if (rnti>0)
    return (rnti);
  LOG_E(MAC,"[eNB %d] Couldn't find RNTI for UE %d\n",mod_idP,ue_idP);
  mac_xface->macphy_exit("");
  return(0);
136
}
Raymond Knopp's avatar
 
Raymond Knopp committed
137 138 139

boolean_t is_UE_active(module_id_t mod_idP, int ue_idP){
  return(eNB_mac_inst[mod_idP].UE_list.active[ue_idP]);
140
}
Raymond Knopp's avatar
 
Raymond Knopp committed
141 142 143

/*
uint8_t find_active_UEs(module_id_t module_idP,int CC_id){
144 145 146 147 148 149 150

  module_id_t        ue_mod_id      = 0;
  rnti_t        rnti         = 0;
  uint8_t            nb_active_ue = 0;

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

Raymond Knopp's avatar
 
Raymond Knopp committed
151
      if (((rnti=eNB_mac_inst[module_idP][CC_id].UE_template[ue_mod_id].rnti) !=0)&&(eNB_mac_inst[module_idP][CC_id].UE_template[ue_mod_id].ul_active==TRUE)){
152 153

          if (mac_xface->get_eNB_UE_stats(module_idP,rnti) != NULL){ // check at the phy enb_ue state for this rnti
Raymond Knopp's avatar
 
Raymond Knopp committed
154
	    nb_active_ue++;
155 156
          }
          else { // this ue is removed at the phy => remove it at the mac as well
Raymond Knopp's avatar
 
Raymond Knopp committed
157
	    mac_remove_ue(module_idP, CC_id, ue_mod_id);
158 159 160 161 162
          }
      }
  }
  return(nb_active_ue);
}
Raymond Knopp's avatar
 
Raymond Knopp committed
163
*/
164 165 166


// get aggregatiob form phy for a give UE
Raymond Knopp's avatar
 
Raymond Knopp committed
167
unsigned char process_ue_cqi (module_id_t module_idP, int ue_idP) {
168 169 170 171 172
  unsigned char aggregation=2;
  // check the MCS and SNR and set the aggregation accordingly
  return aggregation;
}
#ifdef CBA
Raymond Knopp's avatar
 
Raymond Knopp committed
173
uint8_t find_num_active_UEs_in_cbagroup(module_id_t module_idP, int CC_id,unsigned char group_id){
174 175 176 177 178 179

  module_id_t    UE_id;
  rnti_t    rnti;
  unsigned char nb_ue_in_pusch=0;
  LTE_eNB_UE_stats* eNB_UE_stats;

Raymond Knopp's avatar
 
Raymond Knopp committed
180
  for (UE_id=group_id;UE_id<NUMBER_OF_UE_MAX;UE_id+=eNB_mac_inst[module_idP][CC_id].num_active_cba_groups) {
181

Raymond Knopp's avatar
 
Raymond Knopp committed
182 183
      if (((rnti=eNB_mac_inst[module_idP][CC_id].UE_template[UE_id].rnti) !=0) &&
          (eNB_mac_inst[module_idP][CC_id].UE_template[UE_id].ul_active==TRUE)    &&
184
          (mac_get_rrc_status(module_idP,1,UE_id) > RRC_CONNECTED)){
Raymond Knopp's avatar
 
Raymond Knopp committed
185 186 187 188 189 190 191
	//  && (UE_is_to_be_scheduled(module_idP,UE_id)))
	// check at the phy enb_ue state for this rnti
	if ((eNB_UE_stats= mac_xface->get_eNB_UE_stats(module_idP,CC_id,rnti)) != NULL){
	  if ((eNB_UE_stats->mode == PUSCH) && (UE_is_to_be_scheduled(module_idP,UE_id) == 0)){
	    nb_ue_in_pusch++;
	  }
	}
192 193 194 195 196
      }
  }
  return(nb_ue_in_pusch);
}
#endif
Raymond Knopp's avatar
 
Raymond Knopp committed
197 198 199
int add_new_ue(module_id_t mod_idP, int cc_idP, rnti_t rntiP) {
  int UE_id;
  int j;
200

Raymond Knopp's avatar
 
Raymond Knopp committed
201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
  UE_list_t *UE_list = &eNB_mac_inst[mod_idP].UE_list;
  
  LOG_D(MAC,"[eNB %d, CC_id %d] Adding UE with rnti %x (next avail %d, num_UEs %d)\n",mod_idP,cc_idP,rntiP,UE_list->avail,UE_list->num_UEs);

  if (UE_list->avail>=0) {
    UE_id = UE_list->avail;
    UE_list->avail = UE_list->next[UE_list->avail];
    UE_list->next[UE_id] = UE_list->head;
    UE_list->head = UE_id;
 
    UE_list->UE_template[cc_idP][UE_id].rnti = rntiP;
    UE_list->numactiveCCs[UE_id]             = 1;
    UE_list->numactiveULCCs[UE_id]           = 1;
    UE_list->pCC_id[UE_id]                   = cc_idP;
    UE_list->ordered_CCids[0][UE_id]         = cc_idP;
    UE_list->ordered_ULCCids[0][UE_id]       = cc_idP;
    UE_list->num_UEs++;
    UE_list->active[UE_id]                   = TRUE;

    for (j=0;j<8;j++) {
      UE_list->UE_template[cc_idP][UE_id].oldNDI[j]    = 0;
      UE_list->UE_template[cc_idP][UE_id].oldNDI_UL[j] = 0;
    }
    eNB_ulsch_info[mod_idP][UE_id].status = S_UL_WAITING;
    eNB_dlsch_info[mod_idP][UE_id].status = S_UL_WAITING;
    LOG_D(MAC,"[eNB %d] Add UE_id %d on Primary CC_id %d: rnti %x\n",mod_idP,UE_id,cc_idP,rntiP);
    return(UE_id);
228 229 230 231
  }
  return(-1);
}

Raymond Knopp's avatar
 
Raymond Knopp committed
232 233 234 235 236 237
int mac_remove_ue(module_id_t mod_idP, int ue_idP) {

  int prev,i;

  UE_list_t *UE_list = &eNB_mac_inst[mod_idP].UE_list;
  int pCC_id = UE_PCCID(mod_idP,ue_idP);
238

Raymond Knopp's avatar
 
Raymond Knopp committed
239
  LOG_I(MAC,"Removing UE %d from Primary CC_id %d (rnti %x)\n",ue_idP,pCC_id, UE_list->UE_template[pCC_id][ue_idP].rnti);
240 241

  // clear all remaining pending transmissions
Raymond Knopp's avatar
 
Raymond Knopp committed
242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277
  UE_list->UE_template[pCC_id][ue_idP].bsr_info[LCGID0]  = 0;
  UE_list->UE_template[pCC_id][ue_idP].bsr_info[LCGID1]  = 0;
  UE_list->UE_template[pCC_id][ue_idP].bsr_info[LCGID2]  = 0;
  UE_list->UE_template[pCC_id][ue_idP].bsr_info[LCGID3]  = 0;

  UE_list->UE_template[pCC_id][ue_idP].ul_SR             = 0;
  UE_list->UE_template[pCC_id][ue_idP].rnti              = 0;
  UE_list->UE_template[pCC_id][ue_idP].ul_active         = FALSE;
  eNB_ulsch_info[mod_idP][ue_idP].rnti                        = 0;
  eNB_ulsch_info[mod_idP][ue_idP].status                      = S_UL_NONE;
  eNB_dlsch_info[mod_idP][ue_idP].rnti                        = 0;
  eNB_dlsch_info[mod_idP][ue_idP].status                      = S_DL_NONE;

  rrc_eNB_free_UE_index(mod_idP,ue_idP);

  prev = UE_list->head;
  for (i=UE_list->head;i>=0;i=UE_list->next[i]) {
    if (i == ue_idP) {
      // link prev to next in Active list
      if (prev==UE_list->head)
	UE_list->head = UE_list->next[i];
      else
	UE_list->next[prev] = UE_list->next[i];
      // add UE id (i)to available 
      UE_list->next[i] = UE_list->avail;
      UE_list->avail = i;
      UE_list->active[i] = FALSE;
      return(0);
    }
    prev=i;
  }

  UE_list->num_UEs--;

  return(-1);

278 279 280
}


Raymond Knopp's avatar
 
Raymond Knopp committed
281 282
int prev(UE_list_t *listP, int nodeP) {
  int j;
283

Raymond Knopp's avatar
 
Raymond Knopp committed
284 285 286 287 288 289 290 291 292
  if (nodeP==listP->head)
    return(nodeP);
  for (j=listP->head;j>=0;j=listP->next[j]) {
    if (listP->next[j]==nodeP)
      return(j);
  }
  LOG_E(MAC,"error in prev(), could not find previous in UE_list, should never happen\n");
  return(-1);
}
293

Raymond Knopp's avatar
 
Raymond Knopp committed
294
void swap_UEs(UE_list_t *listP,int nodeiP, int nodejP) {
295

Raymond Knopp's avatar
 
Raymond Knopp committed
296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329
  int prev_i,prev_j,next_i;

  prev_i = prev(listP,nodeiP);
  prev_j = prev(listP,nodejP);

  next_i = listP->next[nodeiP];
  listP->next[nodeiP] = listP->next[nodejP];
  listP->next[nodejP] = next_i;

  if (nodeiP==listP->head) {
    listP->head=nodejP;
  }
  else {
    listP->next[prev_i] = nodejP;
  }

  if (nodejP==listP->head) {
    listP->head=nodeiP;
  }
  else {
    listP->next[prev_j] = nodeiP;
  }
 
}

void SR_indication(module_id_t mod_idP, int cc_idP, frame_t frameP, rnti_t rntiP, sub_frame_t subframeP) {

  int UE_id = find_UE_id(mod_idP, rntiP);
  UE_list_t *UE_list = &eNB_mac_inst[mod_idP].UE_list;

  if (UE_id  != UE_INDEX_INVALID ) {
    LOG_D(MAC,"[eNB %d][SR %x] Frame %d subframeP %d Signaling SR for UE %d on CC_id %d\n",mod_idP,rntiP,frameP,subframeP, UE_id,cc_idP);
      UE_list->UE_template[cc_idP][UE_id].ul_SR = 1;
      UE_list->UE_template[cc_idP][UE_id].ul_active = TRUE;
330 331
  } else {
    //     AssertFatal(0, "find_UE_id(%u,rnti %d) not found", enb_mod_idP, rntiP);
Raymond Knopp's avatar
 
Raymond Knopp committed
332
    //    AssertError(0, 0, "Frame %d: find_UE_id(%u,rnti %d) not found\n", frameP, enb_mod_idP, rntiP);
Raymond Knopp's avatar
 
Raymond Knopp committed
333
    LOG_D(MAC,"[eNB %d][SR %x] Frame %d subframeP %d Signaling SR for UE %d (unknown UEid) \n",mod_idP,rntiP,frameP,subframeP, UE_id);
334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489
  }
}




/*
  #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) {

  SCH_SUBHEADER_FIXED *mac_header_ptr = (SCH_SUBHEADER_FIXED *)mac_header;
  uint8_t first_element=0,last_size=0,i;
  uint8_t mac_header_control_elements[2*num_sdus],*ce_ptr;

  ce_ptr = &mac_header_control_elements[0];

  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;
  }

  // SUBHEADER for MSI CE
  if (msi != 0) {// there is MSI MAC Control Element
  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
  }

  // SUBHEADER for MAC SDU (MCCH+MTCHs)
  for (i=0;i<num_sdus;i++) {
  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;
  }
  }

  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++;
  }

  // Copy MSI Control Element to the end of the MAC Header if it presents
  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);
  }

  return((unsigned char*)mac_header_ptr - mac_header);
  }
  #endif
 */
void add_common_dci(DCI_PDU *DCI_pdu,
    void *pdu,
    rnti_t rnti,
    unsigned char dci_size_bytes,
    unsigned char aggregation,
    unsigned char dci_size_bits,
    unsigned char dci_fmt,
    uint8_t 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++;
  LOG_D(MAC,"add common dci format %d for rnti %d \n",dci_fmt,rnti);
}

void add_ue_spec_dci(DCI_PDU *DCI_pdu,void *pdu,rnti_t rnti,unsigned char dci_size_bytes,unsigned char aggregation,unsigned char dci_size_bits,unsigned char dci_fmt,uint8_t 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++;
}





// This has to be updated to include BSR information
Raymond Knopp's avatar
 
Raymond Knopp committed
490
uint8_t UE_is_to_be_scheduled(module_id_t module_idP,int CC_id,uint8_t UE_id) {
491

Raymond Knopp's avatar
 
Raymond Knopp committed
492
  UE_TEMPLATE *UE_template = &eNB_mac_inst[module_idP].UE_list.UE_template[CC_id][UE_id];
493 494 495 496

  //  LOG_D(MAC,"[eNB %d][PUSCH] Frame %d subframeP %d Scheduling UE %d\n",module_idP,rnti,frameP,subframeP,
  //	UE_id);

Raymond Knopp's avatar
 
Raymond Knopp committed
497 498 499 500 501
  if ((UE_template->bsr_info[LCGID0]>0) ||
      (UE_template->bsr_info[LCGID1]>0) ||
      (UE_template->bsr_info[LCGID2]>0) ||
      (UE_template->bsr_info[LCGID3]>0) ||
      (UE_template->ul_SR>0)) // uplink scheduling request
502 503 504 505 506 507 508 509
    return(1);
  else
    return(0);
}




Raymond Knopp's avatar
 
Raymond Knopp committed
510
uint32_t allocate_prbs(int UE_id,unsigned char nb_rb, uint32_t *rballoc) {
511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580

  int i;
  uint32_t rballoc_dci=0;
  unsigned char nb_rb_alloc=0;

  for (i=0;i<(mac_xface->lte_frame_parms->N_RB_DL-2);i+=2) {
      if (((*rballoc>>i)&3)==0) {
          *rballoc |= (3<<i);
          rballoc_dci |= (1<<((12-i)>>1));
          nb_rb_alloc+=2;
      }
      if (nb_rb_alloc==nb_rb)
        return(rballoc_dci);
  }

  if ((mac_xface->lte_frame_parms->N_RB_DL&1)==1) {
      if ((*rballoc>>(mac_xface->lte_frame_parms->N_RB_DL-1)&1)==0) {
          *rballoc |= (1<<(mac_xface->lte_frame_parms->N_RB_DL-1));
          rballoc_dci |= 1;//(1<<(mac_xface->lte_frame_parms->N_RB_DL>>1));
      }
  }
  return(rballoc_dci);
}


uint32_t allocate_prbs_sub(int nb_rb, uint8_t *rballoc) {

  int check=0;//check1=0,check2=0;
  uint32_t rballoc_dci=0;
  //uint8_t number_of_subbands=13;

  LOG_T(MAC,"*****Check1RBALLOC****: %d%d%d%d (nb_rb %d,N_RBGS %d)\n",
      rballoc[3],rballoc[2],rballoc[1],rballoc[0],nb_rb,mac_xface->lte_frame_parms->N_RBGS);
  while((nb_rb >0) && (check < mac_xface->lte_frame_parms->N_RBGS)){
      //printf("rballoc[%d] %d\n",check,rballoc[check]);
      if(rballoc[check] == 1){
          rballoc_dci |= (1<<((mac_xface->lte_frame_parms->N_RBGS-1)-check));
          switch (mac_xface->lte_frame_parms->N_RB_DL) {
          case 6:
            nb_rb--;
          case 25:
            if ((check == mac_xface->lte_frame_parms->N_RBGS-1))
              nb_rb--;
            else
              nb_rb-=2;
            break;
          case 50:
            if ((check == mac_xface->lte_frame_parms->N_RBGS-1))
              nb_rb-=2;
            else
              nb_rb-=3;
            break;
          case 100:
            nb_rb-=4;
            break;
          }
      }
      //printf("rb_alloc %x\n",rballoc_dci);
      check = check+1;
      //    check1 = check1+2;
  }
  // rballoc_dci = (rballoc_dci)&(0x1fff);
  LOG_T(MAC,"*********RBALLOC : %x\n",rballoc_dci);
  // exit(-1);
  return (rballoc_dci);
}




Raymond Knopp's avatar
 
Raymond Knopp committed
581
void update_ul_dci(module_id_t module_idP,int CC_id,rnti_t rnti,uint8_t dai) {
582

Raymond Knopp's avatar
 
Raymond Knopp committed
583
  DCI_PDU             *DCI_pdu   = &eNB_mac_inst[module_idP].common_channels[CC_id].DCI_pdu;
584 585 586 587 588 589 590 591 592 593 594 595 596
  int                  i;
  DCI0_5MHz_TDD_1_6_t *ULSCH_dci = NULL;;

  if (mac_xface->lte_frame_parms->frame_type == TDD) {
      for (i=0;i<DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci;i++) {
          ULSCH_dci = (DCI0_5MHz_TDD_1_6_t *)DCI_pdu->dci_alloc[i].dci_pdu;
          if ((DCI_pdu->dci_alloc[i].format == format0) && (DCI_pdu->dci_alloc[i].rnti == rnti))
            ULSCH_dci->dai = (dai-1)&3;
      }
  }
  //  printf("Update UL DCI: DAI %d\n",dai);
}