phy_procedures_lte_eNb.c 66.8 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
21 22 23

/*! \file phy_procedures_lte_eNB.c
 * \brief Implementation of eNB procedures from 36.213 LTE specifications
24
 * \author R. Knopp, F. Kaltenberger, N. Nikaein, X. Foukas
25 26 27
 * \date 2011
 * \version 0.1
 * \company Eurecom
28
 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr,navid.nikaein@eurecom.fr, x.foukas@sms.ed.ac.uk
29 30 31 32 33 34 35 36
 * \note
 * \warning
 */

#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
#include "SCHED/extern.h"
37
#include "nfapi_interface.h"
38
#include "fapi_l1.h"
39 40 41
#include "UTIL/LOG/log.h"
#include "UTIL/LOG/vcd_signal_dumper.h"

42 43
#include "T.h"

44
#include "assertions.h"
gauthier's avatar
gauthier committed
45
#include "msc.h"
46

47 48
#include <time.h>

49
#if defined(ENABLE_ITTI)
gauthier's avatar
gauthier committed
50
#   include "intertask_interface.h"
51 52
#endif

53

54

55

56
void pmch_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,PHY_VARS_RN *rn,relaying_type_t r_type) {
57 58


Cedric Roux's avatar
Cedric Roux committed
59
#if defined(Rel10) || defined(Rel14)
knopp's avatar
knopp committed
60
  MCH_PDU *mch_pduP=NULL;
61
  MCH_PDU  mch_pdu;
62
  //  uint8_t sync_area=255;
63
#endif
64

65
  int subframe = proc->subframe_tx;
66

knopp's avatar
knopp committed
67 68
  AssertFatal(1==0,"pmch not tested for the moment, exiting\n");

69 70 71 72 73 74
  // This is DL-Cell spec pilots in Control region
  generate_pilots_slot(eNB,
		       eNB->common_vars.txdataF,
		       AMP,
		       subframe<<1,1);

75
  
Cedric Roux's avatar
Cedric Roux committed
76
#if defined(Rel10) || defined(Rel14)
77 78
  // if mcch is active, send regardless of the node type: eNB or RN
  // when mcch is active, MAC sched does not allow MCCH and MTCH multiplexing
79
  /*
80 81
  mch_pduP = mac_xface->get_mch_sdu(eNB->Mod_id,
				    eNB->CC_id,
82
				    proc->frame_tx,
83
				    subframe);
84
  */
85 86 87
  switch (r_type) {
  case no_relay:
    if ((mch_pduP->Pdu_size > 0) && (mch_pduP->sync_area == 0)) // TEST: only transmit mcch for sync area 0
knopp's avatar
knopp committed
88
      LOG_D(PHY,"[eNB%"PRIu8"] Frame %d subframe %d : Got MCH pdu for MBSFN (MCS %"PRIu8", TBS %d) \n",
89 90
	    eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->mcs,
	    eNB->dlsch_MCH->harq_processes[0]->TBS>>3);
91 92
    else {
      LOG_D(PHY,"[DeNB %"PRIu8"] Frame %d subframe %d : Do not transmit MCH pdu for MBSFN sync area %"PRIu8" (%s)\n",
93
	    eNB->Mod_id,proc->frame_tx,subframe,mch_pduP->sync_area,
94 95
	    (mch_pduP->Pdu_size == 0)? "Empty MCH PDU":"Let RN transmit for the moment");
      mch_pduP = NULL;
gauthier's avatar
gauthier committed
96
    }
97
    
98
    break;
99 100 101
    
  case multicast_relay:
    if ((mch_pduP->Pdu_size > 0) && ((mch_pduP->mcch_active == 1) || mch_pduP->msi_active==1)) {
knopp's avatar
knopp committed
102
      LOG_D(PHY,"[RN %"PRIu8"] Frame %d subframe %d: Got the MCH PDU for MBSFN  sync area %"PRIu8" (MCS %"PRIu8", TBS %"PRIu16")\n",
103 104 105 106 107 108 109 110 111
	    rn->Mod_id,rn->frame, subframe,
	    mch_pduP->sync_area,mch_pduP->mcs,mch_pduP->Pdu_size);
    } else if (rn->mch_avtive[subframe%5] == 1) { // SF2 -> SF7, SF3 -> SF8
      mch_pduP= &mch_pdu;
      memcpy(&mch_pduP->payload, // could be a simple copy
	     rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->b,
	     rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->TBS>>3);
      mch_pduP->Pdu_size = (uint16_t) (rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->TBS>>3);
      mch_pduP->mcs = rn->dlsch_rn_MCH[subframe%5]->harq_processes[0]->mcs;
knopp's avatar
knopp committed
112
      LOG_D(PHY,"[RN %"PRIu8"] Frame %d subframe %d: Forward the MCH PDU for MBSFN received on SF %d sync area %"PRIu8" (MCS %"PRIu8", TBS %"PRIu16")\n",
113 114
	    rn->Mod_id,rn->frame, subframe,subframe%5,
	    rn->sync_area[subframe%5],mch_pduP->mcs,mch_pduP->Pdu_size);
115
    } else {
116
      mch_pduP=NULL;
117
    }
118 119
    
    rn->mch_avtive[subframe]=0;
120
    break;
121
    
122
  default:
123
    LOG_W(PHY,"[eNB %"PRIu8"] Frame %d subframe %d: unknown relaying type %d \n",
124
	  eNB->Mod_id,proc->frame_tx,subframe,r_type);
125 126 127 128 129
    mch_pduP=NULL;
    break;
  }// switch
  
  if (mch_pduP) {
130
    fill_eNB_dlsch_MCH(eNB,mch_pduP->mcs,1,0);
131
    // Generate PMCH
132
    generate_mch(eNB,proc,(uint8_t*)mch_pduP->payload);
133
  } else {
134
    LOG_D(PHY,"[eNB/RN] Frame %d subframe %d: MCH not generated \n",proc->frame_tx,subframe);
135
  }
136
  
137
#endif
138
}
139

140
void common_signal_procedures (PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc) {
141

142
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
143
  int **txdataF = eNB->common_vars.txdataF;
144
  uint8_t *pbch_pdu=&eNB->pbch_pdu[0];
145 146
  int subframe = proc->subframe_tx;
  int frame = proc->frame_tx;
147

148 149
  LOG_D(PHY,"common_signal_procedures: frame %d, subframe %d\n",frame,subframe); 

150
  // generate Cell-Specific Reference Signals for both slots
151 152 153 154 155 156 157
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_RS_TX,1);
  generate_pilots_slot(eNB,
		       txdataF,
		       AMP,
		       subframe<<1,0);
  // check that 2nd slot is for DL
  if (subframe_select(fp,subframe) == SF_DL)
158 159 160
    generate_pilots_slot(eNB,
			 txdataF,
			 AMP,
161 162 163 164
			 (subframe<<1)+1,0);
  
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_RS_TX,0);
      
165

166
  // First half of PSS/SSS (FDD, slot 0)
167
  if (subframe == 0) {
168
    if (fp->frame_type == FDD) {
169 170 171 172 173 174 175 176 177 178 179
      generate_pss(txdataF,
		   AMP,
		   fp,
		   (fp->Ncp==NORMAL) ? 6 : 5,
		   0);
      generate_sss(txdataF,
		   AMP,
		   fp,
		   (fp->Ncp==NORMAL) ? 5 : 4,
		   0);
      
180
    }
181
    
182 183


184 185 186
      
    /// First half of SSS (TDD, slot 1)
    
187
    if (fp->frame_type == TDD) {
188 189 190 191 192 193
      generate_sss(txdataF,
		   AMP,
		   fp,
		   (fp->Ncp==NORMAL) ? 6 : 5,
		   1);
    }
194

195 196
    // generate PBCH (Physical Broadcast CHannel) info

197
    /// generate PBCH
198 199 200
    if ((frame&3)==0) {
      AssertFatal(eNB->pbch_configured==1,"PBCH was not configured by MAC\n");
      eNB->pbch_configured=0;
201
    }
202 203 204 205 206 207 208
    generate_pbch(&eNB->pbch,
		  txdataF,
		  AMP,
		  fp,
		  pbch_pdu,
		  frame&3);
  
209
  }
210
  else if ((subframe == 1) &&
211
	   (fp->frame_type == TDD)){
212 213 214 215 216
    generate_pss(txdataF,
		 AMP,
		 fp,
		 2,
		 2);
217
  }
218 219 220
  
  // Second half of PSS/SSS (FDD, slot 10)
  else if ((subframe == 5) && 
221
	   (fp->frame_type == FDD)) {
222 223 224 225 226 227 228 229 230 231
    generate_pss(txdataF,
		 AMP,
		 &eNB->frame_parms,
		 (fp->Ncp==NORMAL) ? 6 : 5,
		 10);
    generate_sss(txdataF,
		 AMP,
		 &eNB->frame_parms,
		 (fp->Ncp==NORMAL) ? 5 : 4,
		 10);
232

233
  }
234

235 236
  //  Second-half of SSS (TDD, slot 11)
  else if ((subframe == 5) &&
237
	   (fp->frame_type == TDD)) {
238 239 240 241 242
    generate_sss(txdataF,
		 AMP,
		 fp,
		 (fp->Ncp==NORMAL) ? 6 : 5,
		 11);
243
  }
244

245 246
  // Second half of PSS (TDD, slot 12)
  else if ((subframe == 6) &&
247
	   (fp->frame_type == TDD)) { 
248 249 250 251 252 253
    generate_pss(txdataF,
		 AMP,
		 fp,
		 2,
		 12);
  }
254

255
}
256

257 258


259 260 261 262 263 264
void pdsch_procedures(PHY_VARS_eNB *eNB,
		      eNB_rxtx_proc_t *proc,
		      int harq_pid,
		      LTE_eNB_DLSCH_t *dlsch, 
		      LTE_eNB_DLSCH_t *dlsch1,
		      LTE_eNB_UE_stats *ue_stats,
265
		      int ra_flag) {
266

267 268
  int frame=proc->frame_tx;
  int subframe=proc->subframe_tx;
269 270
  LTE_DL_eNB_HARQ_t *dlsch_harq=dlsch->harq_processes[harq_pid];
  int input_buffer_length = dlsch_harq->TBS/8;
271
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
272

273
  if (dlsch->rnti == 0x02) {//frame < 200) {
274

275
    LOG_I(PHY,
276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295
	  "[eNB %"PRIu8"][PDSCH %"PRIx16"/%"PRIu8"] Frame %d, subframe %d: Generating PDSCH/DLSCH with input size = %"PRIu16", pdsch_start %d, G %d, nb_rb %"PRIu16", rb0 %x, rb1 %x, TBS %"PRIu16", pmi_alloc %"PRIx64", rv %"PRIu8" (round %"PRIu8")\n",
	  eNB->Mod_id, dlsch->rnti,harq_pid,
	  frame, subframe, input_buffer_length, dlsch_harq->pdsch_start,
	  get_G(fp,
		dlsch_harq->nb_rb,
		dlsch_harq->rb_alloc,
		dlsch_harq->Qm,
		dlsch_harq->Nl,
		dlsch_harq->pdsch_start,
		frame,
		subframe,
		dlsch_harq->mimo_mode==TM7?7:0),
	  dlsch_harq->nb_rb,
	  dlsch_harq->rb_alloc[0],
	  dlsch_harq->rb_alloc[1],
	  dlsch_harq->TBS,
	  pmi2hex_2Ar1(dlsch_harq->pmi_alloc),
	  dlsch_harq->rvidx,
	  dlsch_harq->round);
  }    
296
#if defined(MESSAGE_CHART_GENERATOR_PHY)
297 298 299
  MSC_LOG_TX_MESSAGE(
		     MSC_PHY_ENB,MSC_PHY_UE,
		     NULL,0,
300
		     "%05u:%02u PDSCH/DLSCH input size = %"PRIu16", G %d, nb_rb %"PRIu16", TBS %"PRIu16", pmi_alloc %"PRIx16", rv %"PRIu8" (round %"PRIu8")",
301 302 303 304 305
		     frame, subframe,
		     input_buffer_length,
		     get_G(fp,
			   dlsch_harq->nb_rb,
			   dlsch_harq->rb_alloc,
306
			   dlsch_harq->Qm,
307
			   dlsch_harq->Nl,
308
			   dlsch_harq->pdsch_start,
309 310 311
			   frame,
			   subframe,
			   dlsch_harq->mimo_mode==TM7?7:0),
312
		     dlsch_harq->nb_rb,
313
		     dlsch_harq->TBS,
314 315 316 317
		     pmi2hex_2Ar1(dlsch_harq->pmi_alloc),
		     dlsch_harq->rvidx,
		     dlsch_harq->round);
#endif
318 319
  
  
320
  if (ue_stats) ue_stats->dlsch_sliding_cnt++;
321
  
322 323 324
  if (dlsch_harq->round == 0) {
    if (ue_stats)
      ue_stats->dlsch_trials[harq_pid][0]++;
325 326 327 328 329 330 331 332
  } else {
    ue_stats->dlsch_trials[harq_pid][dlsch_harq->round]++;
#ifdef DEBUG_PHY_PROC
#ifdef DEBUG_DLSCH
    LOG_D(PHY,"[eNB] This DLSCH is a retransmission\n");
#endif
#endif
  }
333 334


335
  LOG_D(PHY,"Generating DLSCH/PDSCH %d\n",ra_flag);
336
  // 36-212 
337
  start_meas(&eNB->dlsch_encoding_stats);
338
  AssertFatal(dlsch_harq->pdu!=NULL,"dlsch_harq->pdu == NULL (rnti %x)\n",dlsch->rnti);
339

340 341
  eNB->te(eNB,
	  dlsch_harq->pdu,
342
	  dlsch_harq->pdsch_start,
343
	  dlsch,
Wang Tsu-Han's avatar
Wang Tsu-Han committed
344 345
	  frame,
	  subframe,
346 347
	  &eNB->dlsch_rate_matching_stats,
	  &eNB->dlsch_turbo_encoding_stats,
Wang Tsu-Han's avatar
Wang Tsu-Han committed
348
	  &eNB->dlsch_turbo_encoding_waiting_stats,
349
      &eNB->dlsch_turbo_encoding_main_stats,
350 351
      &eNB->dlsch_turbo_encoding_wakeup_stats0,
      &eNB->dlsch_turbo_encoding_wakeup_stats1,
352 353 354 355 356 357 358 359 360 361 362
	  &eNB->dlsch_interleaving_stats);
  stop_meas(&eNB->dlsch_encoding_stats);
  // 36-211
  start_meas(&eNB->dlsch_scrambling_stats);
  dlsch_scrambling(fp,
		   0,
		   dlsch,
		   harq_pid,
		   get_G(fp,
			 dlsch_harq->nb_rb,
			 dlsch_harq->rb_alloc,
363
			 dlsch_harq->Qm,
364
			 dlsch_harq->Nl,
365
			 dlsch_harq->pdsch_start,
366 367 368
			 frame,subframe,
			 0),
		   0,
369
		   frame,
370 371 372 373 374 375 376 377 378 379
		   subframe<<1);
  stop_meas(&eNB->dlsch_scrambling_stats);
  
  start_meas(&eNB->dlsch_modulation_stats);
  
  
  dlsch_modulation(eNB,
		   eNB->common_vars.txdataF,
		   AMP,
		   subframe,
380
		   dlsch_harq->pdsch_start,
381 382 383 384
		   dlsch,
		   dlsch1);
  
  stop_meas(&eNB->dlsch_modulation_stats);
385

386
  dlsch->active = 0;
387
  dlsch_harq->round++;
388
}
389 390


391

392
void phy_procedures_eNB_TX(PHY_VARS_eNB *eNB,
knopp's avatar
knopp committed
393
			   eNB_rxtx_proc_t *proc,
394
                           relaying_type_t r_type,
395 396
			   PHY_VARS_RN *rn,
			   int do_meas)
397 398
{
  UNUSED(rn);
399 400
  int frame=proc->frame_tx;
  int subframe=proc->subframe_tx;
401
  uint32_t i,aa;
402
  uint8_t harq_pid;
403
  int8_t UE_id=0;
404
  uint8_t num_pdcch_symbols=0;
405
  uint8_t num_dci=0;
406 407
  uint8_t ul_subframe;
  uint32_t ul_frame;
408
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
409
  LTE_UL_eNB_HARQ_t *ulsch_harq;
410

411
  int offset = eNB->CC_id;//proc == &eNB->proc.proc_rxtx[0] ? 0 : 1;
412

413
  if ((fp->frame_type == TDD) && (subframe_select(fp,subframe)==SF_UL)) return;
414

Raymond Knopp's avatar
Raymond Knopp committed
415
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX+offset,1);
416
  if (do_meas==1) start_meas(&eNB->phy_proc_tx);
417

418
  // clear the transmit data array for the current subframe
419 420 421
  for (aa=0; aa<fp->nb_antenna_ports_eNB; aa++) {      
    memset(&eNB->common_vars.txdataF[aa][subframe*fp->ofdm_symbol_size*(fp->symbols_per_tti)],
	   0,fp->ofdm_symbol_size*(fp->symbols_per_tti)*sizeof(int32_t));
422
  }
423
  
424

425
  if (is_pmch_subframe(frame,subframe,fp)) {
426
    pmch_procedures(eNB,proc,rn,r_type);
427 428 429
  }
  else {
    // this is not a pmch subframe, so generate PSS/SSS/PBCH
430
    common_signal_procedures(eNB,proc);
431
  }
432

433
  // clear existing ulsch dci allocations before applying info from MAC  (this is table
434
  ul_subframe = pdcch_alloc2ul_subframe(fp,subframe);
435
  ul_frame = pdcch_alloc2ul_frame(fp,frame,subframe);
436 437 438



439
  // clear previous allocation information for all UEs
440
  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
441 442
    if (eNB->dlsch[i][0])
      eNB->dlsch[i][0]->subframe_tx[subframe] = 0;
443
  }
444

445 446
  /* save old HARQ information needed for PHICH generation */
  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
447
    harq_pid = subframe2harq_pid(fp,ul_frame,ul_subframe);
448
    if (eNB->ulsch[i]) {
449 450
      ulsch_harq = eNB->ulsch[i]->harq_processes[harq_pid];

451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470
      /* Store first_rb and n_DMRS for correct PHICH generation below.
       * For PHICH generation we need "old" values of last scheduling
       * for this HARQ process. 'generate_eNB_dlsch_params' below will
       * overwrite first_rb and n_DMRS and 'generate_phich_top', done
       * after 'generate_eNB_dlsch_params', would use the "new" values
       * instead of the "old" ones.
       *
       * This has been tested for FDD only, may be wrong for TDD.
       *
       * TODO: maybe we should restructure the code to be sure it
       *       is done correctly. The main concern is if the code
       *       changes and first_rb and n_DMRS are modified before
       *       we reach here, then the PHICH processing will be wrong,
       *       using wrong first_rb and n_DMRS values to compute
       *       ngroup_PHICH and nseq_PHICH.
       *
       * TODO: check if that works with TDD.
       */
      if ((subframe_select(fp,ul_subframe)==SF_UL) ||
          (fp->frame_type == FDD)) {
471 472
        ulsch_harq->previous_first_rb = ulsch_harq->first_rb;
        ulsch_harq->previous_n_DMRS   = ulsch_harq->n_DMRS;
473 474 475 476
      }
    }
  }

477

478

479 480 481 482 483
  //  num_pdcch_symbols = DCI_pdu->num_pdcch_symbols;
  num_pdcch_symbols = eNB->pdcch_vars[subframe&1].num_pdcch_symbols;
  num_dci           = eNB->pdcch_vars[subframe&1].num_dci;
  //  LOG_D(PHY,"num_pdcch_symbols %"PRIu8",(dci common %"PRIu8", dci uespec %"PRIu8"\n",num_pdcch_symbols,
  //        DCI_pdu->Num_common_dci,DCI_pdu->Num_ue_spec_dci);
484
  LOG_D(PHY,"num_pdcch_symbols %"PRIu8",(number dci %"PRIu8"\n",num_pdcch_symbols,
485 486
	num_dci);
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,num_pdcch_symbols);
487

488

489 490
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,(frame*10)+subframe);

491
  if (num_dci > 0)
knopp's avatar
knopp committed
492
    LOG_D(PHY,"[eNB %"PRIu8"] Frame %d, subframe %d: Calling generate_dci_top (pdcch) (num_dci %"PRIu8")\n",eNB->Mod_id,frame, subframe,
493
	  num_dci);
494

495
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PDCCH_TX,1);    
496 497 498 499 500 501 502 503 504
  generate_dci_top(num_pdcch_symbols,
		   num_dci,
		   &eNB->pdcch_vars[subframe&1].dci_alloc[0],
		   0,
		   AMP,
		   fp,
		   eNB->common_vars.txdataF,
		   subframe);
  
505

gauthier's avatar
gauthier committed
506
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PDCCH_TX,0);
507

508
  // Now scan UE specific DLSCH
509
  LTE_eNB_DLSCH_t *dlsch0,*dlsch1;
510
  for (UE_id=0; UE_id<NUMBER_OF_UE_MAX; UE_id++)
511
    {
512 513 514 515 516 517
      dlsch0 = eNB->dlsch[(uint8_t)UE_id][0]; 
      dlsch1 = eNB->dlsch[(uint8_t)UE_id][1]; 

      if ((dlsch0)&&
	  (dlsch0->rnti>0)&&
	  (dlsch0->active == 1)) {
518

519
	// get harq_pid
520
	harq_pid = dlsch0->harq_ids[subframe];
521 522 523 524 525
	AssertFatal(harq_pid>=0,"harq_pid is negative\n");
	// generate pdsch
	pdsch_procedures(eNB,
			 proc,
			 harq_pid,
526 527
			 dlsch0,
			 dlsch1,
528
			 &eNB->UE_stats[(uint32_t)UE_id],
529
			 0);
530 531


532
      }
533

gauthier's avatar
gauthier committed
534

535 536 537
      else if ((dlsch0)&&
	       (dlsch0->rnti>0)&&
	       (dlsch0->active == 0)) {
538

539
	// clear subframe TX flag since UE is not scheduled for PDSCH in this subframe (so that we don't look for PUCCH later)
540
	dlsch0->subframe_tx[subframe]=0;
541
      }
542
    }
543

544 545


546 547 548
  generate_phich_top(eNB,
		     proc,
		     AMP);
549

Raymond Knopp's avatar
Raymond Knopp committed
550
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX+offset,0);
551
  if (do_meas==1) stop_meas(&eNB->phy_proc_tx);
552
  
553 554
}

555

556 557 558 559 560 561
void prach_procedures(PHY_VARS_eNB *eNB,
#ifdef Rel14
		      int br_flag
#endif
		      ) {
  uint16_t max_preamble[4],max_preamble_energy[4],max_preamble_delay[4];
562
  uint16_t i;
563
  int frame,subframe;
knopp's avatar
knopp committed
564 565
  LTE_eNB_PRACH *prach_vars=NULL;

566 567 568 569
#ifdef Rel14
  if (br_flag==1) {
    subframe = eNB->proc.subframe_prach_br;
    frame = eNB->proc.frame_prach_br;
570 571 572
    pthread_mutex_lock(&eNB->UL_INFO_mutex);
    eNB->UL_INFO.rach_ind_br.number_of_preambles=0;
    pthread_mutex_unlock(&eNB->UL_INFO_mutex);
573 574 575 576
  }
  else
#endif
    {
577 578 579
      pthread_mutex_lock(&eNB->UL_INFO_mutex);
      eNB->UL_INFO.rach_ind.number_of_preambles=0;
      pthread_mutex_unlock(&eNB->UL_INFO_mutex);
580 581 582
      subframe = eNB->proc.subframe_prach;
      frame = eNB->proc.frame_prach;
    }
583 584 585
  RU_t *ru;
  int aa=0;
  int ru_aa;
586

587
 
588
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PRACH_RX,1);
589

590 591


592 593
  for (i=0;i<eNB->num_RU;i++) {
    ru=eNB->RU_list[i];
594
    for (ru_aa=0,aa=0;ru_aa<ru->nb_rx;ru_aa++,aa++) {
595
      eNB->prach_vars.rxsigF[0][aa] = eNB->RU_list[i]->prach_rxsigF[ru_aa];
596 597 598 599
#ifdef Rel14
      int ce_level;

      if (br_flag==1)
600
	for (ce_level=0;ce_level<4;ce_level++) eNB->prach_vars_br.rxsigF[ce_level][aa] = eNB->RU_list[i]->prach_rxsigF_br[ce_level][ru_aa];
601 602
#endif
    }
603
  }
604

605 606
  rx_prach(eNB,
	   eNB->RU_list[0],
607 608 609
	   &max_preamble[0],
	   &max_preamble_energy[0],
	   &max_preamble_delay[0],
610
	   frame,
611 612 613 614 615
	   0
#ifdef Rel14
	   ,br_flag
#endif
	   );
616

617
  //#ifdef DEBUG_PHY_PROC
knopp's avatar
knopp committed
618
  LOG_D(PHY,"[RAPROC] Frame %d, subframe %d : Most likely preamble %d, energy %d dB delay %d\n",
619
        frame,subframe,
620
	max_preamble[0],
621
        max_preamble_energy[0]/10,
622
        max_preamble_delay[0]);
623
  //q#endif
624

625 626
#ifdef Rel14
  if (br_flag==1) {
627

628 629 630 631 632 633
    prach_vars = &eNB->prach_vars_br;
    int prach_mask;
      
    prach_mask = is_prach_subframe(&eNB->frame_parms,eNB->proc.frame_prach_br,eNB->proc.subframe_prach_br);
    
    eNB->UL_INFO.rach_ind_br.preamble_list                              = eNB->preamble_list_br;
634 635 636
    int ind=0;
    int ce_level=0;
    /* Save for later, it doesn't work    
637
    for (int ind=0,ce_level=0;ce_level<4;ce_level++) {
638 639 640
      
      if ((eNB->frame_parms.prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[ce_level]==1)&&
	  (prach_mask&(1<<(1+ce_level)) > 0) && // prach is active and CE level has finished its repetitions
641 642
	  (eNB->prach_vars_br.repetition_number[ce_level]==
	   eNB->frame_parms.prach_emtc_config_common.prach_ConfigInfo.prach_numRepetitionPerPreambleAttempt[ce_level])) {
643
    */ 
644 645 646 647 648 649 650 651 652 653
    if (eNB->frame_parms.prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[0]==1){ 
      if (max_preamble_energy[0] > 350) {
	eNB->UL_INFO.rach_ind_br.number_of_preambles++;
	
	eNB->preamble_list_br[ind].preamble_rel8.timing_advance        = max_preamble_delay[ind];//
	eNB->preamble_list_br[ind].preamble_rel8.preamble              = max_preamble[ind];
	// note: fid is implicitly 0 here, this is the rule for eMTC RA-RNTI from 36.321, Section 5.1.4
	eNB->preamble_list_br[ind].preamble_rel8.rnti                  = 1+subframe+(eNB->prach_vars_br.first_frame[ce_level]%40);  
	eNB->preamble_list_br[ind].instance_length                     = 0; //don't know exactly what this is
	eNB->preamble_list_br[ind].preamble_rel13.rach_resource_type   = 1+ce_level;  // CE Level
knopp's avatar
knopp committed
654
	LOG_D(PHY,"Filling NFAPI indication for RACH %d CELevel %d (mask %x) : TA %d, Preamble %d, rnti %x, rach_resource_type %d\n",
655 656 657 658 659 660 661 662 663
	      ind,
	      ce_level,
	      prach_mask,
	      eNB->preamble_list_br[ind].preamble_rel8.timing_advance,
	      eNB->preamble_list_br[ind].preamble_rel8.preamble,
	      eNB->preamble_list_br[ind].preamble_rel8.rnti,
	      eNB->preamble_list_br[ind].preamble_rel13.rach_resource_type);
      }
      /*
664 665
	ind++;
      }
666 667
      } */// ce_level
    }
668 669 670
  }
  else
#endif
Cedric Roux's avatar
Cedric Roux committed
671

672
    {
673
      if (max_preamble_energy[0] > 350) {
674

675
	LOG_D(PHY,"[eNB %d/%d][RAPROC] Frame %d, subframe %d Initiating RA procedure with preamble %d, energy %d.%d dB, delay %d\n",
676 677 678 679 680 681 682 683
	      eNB->Mod_id,
	      eNB->CC_id,
	      frame,
	      subframe,
	      max_preamble[0],
	      max_preamble_energy[0]/10,
	      max_preamble_energy[0]%10,
	      max_preamble_delay[0]);
684
	
Cedric Roux's avatar
Cedric Roux committed
685
	    T(T_ENB_PHY_INITIATE_RA_PROCEDURE, T_INT(eNB->Mod_id), T_INT(frame), T_INT(subframe),
686 687
	      T_INT(max_preamble[0]), T_INT(max_preamble_energy[0]), T_INT(max_preamble_delay[0]));
	    
688 689 690 691 692 693 694 695 696 697 698 699 700 701
	    prach_vars = &eNB->prach_vars;
	    
	    
	    pthread_mutex_lock(&eNB->UL_INFO_mutex);
	    
	    eNB->UL_INFO.rach_ind.number_of_preambles                 = 1;
	    eNB->UL_INFO.rach_ind.preamble_list                       = eNB->preamble_list;
	    
	    eNB->preamble_list[0].preamble_rel8.timing_advance        = max_preamble_delay[0];
	    eNB->preamble_list[0].preamble_rel8.preamble              = max_preamble[0];
	    eNB->preamble_list[0].preamble_rel8.rnti                  = 1+subframe;  // note: fid is implicitly 0 here
	    eNB->preamble_list[0].preamble_rel13.rach_resource_type   = 0;
	    eNB->preamble_list[0].instance_length                     = 0; //don't know exactly what this is
	    
knopp's avatar
knopp committed
702
	    LOG_D(PHY,"Filling NFAPI indication for RACH : TA %d, Preamble %d, rnti %x, rach_resource_type %d\n",
703 704 705 706 707 708
		  eNB->preamble_list[0].preamble_rel8.timing_advance,
		  eNB->preamble_list[0].preamble_rel8.preamble,
		  eNB->preamble_list[0].preamble_rel8.rnti,
		  eNB->preamble_list[0].preamble_rel13.rach_resource_type);	    
	    pthread_mutex_unlock(&eNB->UL_INFO_mutex);
      
709
      } // max_preamble_energy > 350
710
    } // else br_flag
711
      /*
712
	mac_xface->initiate_ra_proc(eNB->Mod_id,
713 714 715 716 717 718 719 720 721 722 723 724
	eNB->CC_id,
	frame,
	preamble_max,
	preamble_delay_list[preamble_max]*update_TA/update_TA2,
	0,subframe,0);*/
      
    
    /*  } else {
    MSC_LOG_EVENT(MSC_PHY_ENB, "0 RA Failed add user, too many");
    LOG_I(PHY,"[eNB %d][RAPROC] frame %d, subframe %d: Unable to add user, max user count reached\n",
	  eNB->Mod_id,frame, subframe);
	  }*/
725

726
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_PRACH_RX,0);
727 728
}

729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760
void srs_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc) {

  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
  const int subframe = proc->subframe_rx;
  const int frame = proc->frame_rx;

  int i;

  if (is_srs_occasion_common(fp,frame,subframe)) { 
  
  // Do SRS processing 
  // check if there is SRS and we have to use shortened format
  // TODO: check for exceptions in transmission of SRS together with ACK/NACK
    for (i=0;i<NUMBER_OF_UE_MAX;i++) {

      if (eNB->soundingrs_ul_config_dedicated[i].active==1) {

      
	if (lte_srs_channel_estimation(fp,
				       &eNB->common_vars,
				       &eNB->srs_vars[i],
				       &eNB->soundingrs_ul_config_dedicated[i],
				       subframe,
				       0/*eNB_id*/)) {
	  LOG_E(PHY,"problem processing SRS\n");
	}
	eNB->soundingrs_ul_config_dedicated[i].active=0;
      }
    }
  }
}

761 762
void fill_sr_indication(PHY_VARS_eNB *eNB,uint16_t rnti,int frame,int subframe,uint32_t stat) {
  
763 764 765 766 767 768 769
  pthread_mutex_lock(&eNB->UL_INFO_mutex);
  nfapi_sr_indication_pdu_t *pdu =   &eNB->UL_INFO.sr_ind.sr_pdu_list[eNB->UL_INFO.sr_ind.number_of_srs];

  pdu->instance_length                                = 0; // don't know what to do with this
  //  pdu->rx_ue_information.handle                       = handle;
  pdu->rx_ue_information.rnti                         = rnti;

770 771 772 773 774 775 776 777
  int SNRtimes10 = dB_fixed_times10(stat) - 200;//(10*eNB->measurements.n0_power_dB[0]);


  if      (SNRtimes10 < -640) pdu->ul_cqi_information.ul_cqi=0;
  else if (SNRtimes10 >  635) pdu->ul_cqi_information.ul_cqi=255;
  else                        pdu->ul_cqi_information.ul_cqi=(640+SNRtimes10)/5;
  pdu->ul_cqi_information.channel = 0;

778 779 780 781 782
  eNB->UL_INFO.sr_ind.number_of_srs++;
  pthread_mutex_unlock(&eNB->UL_INFO_mutex);
}

void uci_procedures(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc)
Cedric Roux's avatar
Cedric Roux committed
783
{
784
  LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
785 786
  uint8_t SR_payload = 0,pucch_b0b1[4][2]= {{0,0},{0,0},{0,0},{0,0}},harq_ack[4]={0,0,0,0};
  int32_t metric[4]={0,0,0,0},metric_SR=0,max_metric;
787 788
  const int subframe = proc->subframe_rx;
  const int frame = proc->frame_rx;
789 790 791 792
  int i;
  LTE_eNB_UCI *uci;
  uint16_t tdd_multiplexing_mask=0;
  int res;
793

794
  for (i=0;i<NUMBER_OF_UE_MAX;i++) {
Cedric Roux's avatar
Cedric Roux committed
795

796 797 798 799
    uci = &eNB->uci_vars[i];
    if ((uci->active == 1) &&
	(uci->frame == frame) &&
	(uci->subframe == subframe)) {
800

801
      LOG_D(PHY,"Frame %d, subframe %d: Running uci procedures (type %d) for %d \n",frame,subframe,uci->type,i);
802
      uci->active=0;
Cedric Roux's avatar
Cedric Roux committed
803

knopp's avatar
knopp committed
804 805 806
      // Null out PUCCH PRBs for noise measurement
      switch(fp->N_RB_UL) {
      case 6:
Cedric Roux's avatar
Cedric Roux committed
807 808
        eNB->rb_mask_ul[0] |= (0x1 | (1<<5)); //position 5
        break;
knopp's avatar
knopp committed
809
      case 15:
Cedric Roux's avatar
Cedric Roux committed
810 811
        eNB->rb_mask_ul[0] |= (0x1 | (1<<14)); // position 14
        break;
knopp's avatar
knopp committed
812
      case 25:
Cedric Roux's avatar
Cedric Roux committed
813 814
        eNB->rb_mask_ul[0] |= (0x1 | (1<<24)); // position 24
        break;
knopp's avatar
knopp committed
815
      case 50:
Cedric Roux's avatar
Cedric Roux committed
816 817 818
        eNB->rb_mask_ul[0] |= 0x1;
        eNB->rb_mask_ul[1] |= (1<<17); // position 49 (49-32)
        break;
knopp's avatar
knopp committed
819
      case 75:
Cedric Roux's avatar
Cedric Roux committed
820 821 822
        eNB->rb_mask_ul[0] |= 0x1;
        eNB->rb_mask_ul[2] |= (1<<10); // position 74 (74-64)
        break;
knopp's avatar
knopp committed
823
      case 100:
Cedric Roux's avatar
Cedric Roux committed
824 825 826
        eNB->rb_mask_ul[0] |= 0x1;
        eNB->rb_mask_ul[3] |= (1<<3); // position 99 (99-96)
        break;
knopp's avatar
knopp committed
827
      default:
Cedric Roux's avatar
Cedric Roux committed
828 829
        LOG_E(PHY,"Unknown number for N_RB_UL %d\n",fp->N_RB_UL);
        break;
knopp's avatar
knopp committed
830
      }
831

832 833 834 835 836 837 838 839
      switch (uci->type) {
      case SR:
      case HARQ_SR:
		
	metric_SR = rx_pucch(eNB,
			      uci->pucch_fmt,
			      i,
			      uci->n_pucch_1_0_sr[0],
840
			      0, // n2_pucch
841
			      uci->srs_active, // shortened format
842 843 844 845
			      &SR_payload,
			      frame,
			      subframe,
			      PUCCH1_THRES);
knopp's avatar
knopp committed
846
	LOG_D(PHY,"[eNB %d][SR %x] Frame %d subframe %d Checking SR is %d (SR n1pucch is %d)\n",
847
	      eNB->Mod_id,
848
	      uci->rnti,
849 850 851
	      frame,
	      subframe,
	      SR_payload,
852 853 854
	      uci->n_pucch_1_0_sr[0]);
	if (uci->type == SR) {
	  if (SR_payload == 1) {
855
	    fill_sr_indication(eNB,uci->rnti,frame,subframe,metric_SR);
856 857 858 859 860 861 862 863
	    return;
	  }
	  else {
	    return;
	  }
	}
      case HARQ:
	if (fp->frame_type == FDD) {
864
	  LOG_D(PHY,"Frame %d Subframe %d Demodulating PUCCH (UCI %d) for ACK/NAK (uci->pucch_fmt %d,uci->type %d.uci->frame %d, uci->subframe %d): n1_pucch0 %d SR_payload %d\n",
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883
		frame,subframe,i,
		uci->pucch_fmt,uci->type,
		uci->frame,uci->subframe,uci->n_pucch_1[0][0],
		SR_payload);
	  
	  metric[0] = rx_pucch(eNB,
			       uci->pucch_fmt,
			       i,
			       uci->n_pucch_1[0][0],
			       0, //n2_pucch
			       uci->srs_active, // shortened format
			       pucch_b0b1[0],
			       frame,
			       subframe,
			       PUCCH1a_THRES);
	  
	  
	  /* cancel SR detection if reception on n1_pucch0 is better than on SR PUCCH resource index, otherwise send it up to MAC */
	  if (uci->type==HARQ_SR && metric[0] > metric_SR) SR_payload = 0;
884
	  else if (SR_payload == 1) fill_sr_indication(eNB,uci->rnti,frame,subframe,metric_SR);
885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901
 
	  if (uci->type==HARQ_SR && metric[0] <= metric_SR) {
	    /* when transmitting ACK/NACK on SR PUCCH resource index, SR payload is always 1 */
	    SR_payload = 1;
	    
	    metric[0]=rx_pucch(eNB,
			       uci->pucch_fmt,
			       i,
			       uci->n_pucch_1_0_sr[0],
			       0, //n2_pucch
			       uci->srs_active, // shortened format
			       pucch_b0b1[0],
			       frame,
			       subframe,
			       PUCCH1a_THRES);
	  }
	  
902

903
	  LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d pucch1a (FDD) payload %d (metric %d)\n",
904 905 906
		eNB->Mod_id,
		uci->rnti,
		frame,subframe,
907 908
		pucch_b0b1[0][0],metric[0]);

909
      uci->stat = metric[0]; 	  
910
	  fill_uci_harq_indication(eNB,uci,frame,subframe,pucch_b0b1[0],0,0xffff);
911

912 913
	}
	else { // frame_type == TDD
knopp's avatar
knopp committed
914

915

916 917
	  // if SR was detected, use the n1_pucch from SR
	  if (SR_payload==1) {
918
#ifdef DEBUG_PHY_PROC
919 920 921 922
	    LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d Checking ACK/NAK (%d,%d,%d,%d) format %d with SR\n",eNB->Mod_id,
		  eNB->dlsch[UE_id][0]->rnti,
		  frame,subframe,
		  n1_pucch0,n1_pucch1,n1_pucch2,n1_pucch3,format);
923
#endif
924 925 926 927 928 929 930 931 932 933 934 935
	    
	    metric[0] = rx_pucch(eNB,
				 pucch_format1b,
				 i,
				 uci->n_pucch_1_0_sr[0],
				 0, //n2_pucch
				 uci->srs_active, // shortened format
				 pucch_b0b1[0],
				 frame,
				 subframe,
				 PUCCH1a_THRES);
	  } else { //using assigned pucch resources
936
#ifdef DEBUG_PHY_PROC
937 938 939 940 941 942 943 944 945
	    LOG_D(PHY,"[eNB %d][PDSCH %x] Frame %d subframe %d Checking ACK/NAK M=%d (%d,%d,%d,%d) format %d\n",eNB->Mod_id,
		  eNB->dlsch[UE_id][0]->rnti,
		  frame,subframe,
		  uci->num_pucch_resources,
		  uci->n_pucch_1[res][0],
		  uci->n_pucch_1[res][1],
		  uci->n_pucch_1[res][2],
		  uci->n_pucch_1[res][3],
		  uci->pucch_fmt);
946
#endif
947 948 949 950 951 952 953 954 955 956 957 958 959 960 961
	    for (res=0;res<uci->num_pucch_resources;res++)
	      metric[res] = rx_pucch(eNB,
				     uci->pucch_fmt,
				     i,
				     uci->n_pucch_1[res][0],
				     0, // n2_pucch
				     uci->srs_active, // shortened format
				     pucch_b0b1[res],
				     frame,
				     subframe,
				     PUCCH1a_THRES);
	  	  
	    

	  }
962

963
	  
964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979
	  if (SR_payload == 1) { // this implements Table 7.3.1 from 36.213
	    if (pucch_b0b1[0][0] == 4) { // there isn't a likely transmission
	      harq_ack[0] = 4; // DTX
	    }
	    else if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] == 1) { // 1/4/7 ACKs
	      harq_ack[0] = 1;
	    }
	    else if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1) { // 2/5/8 ACKs
	      harq_ack[0] = 2;
	    }
	    else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1) { // 3/6/9 ACKs
	      harq_ack[0] = 3;
	    }
	    else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] != 1) { // 0 ACKs, or at least one DL assignment missed
	      harq_ack[0] = 0;
	    }
980
        uci->stat = metric[0];
981 982
	    fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,2,0xffff); // special_bundling mode
	  } 
knopp's avatar
knopp committed
983
	  else if ((uci->tdd_bundling == 0) && (uci->num_pucch_resources==2)){ // multiplexing + no SR, implement Table 10.1.3-5 (Rel14) for multiplexing with M=2
984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
	    if (pucch_b0b1[0][0] == 4 ||
		pucch_b0b1[1][0] == 4) { // there isn't a likely transmission
	      harq_ack[0] = 4; // DTX
	      harq_ack[1] = 6; // NACK/DTX
	    } 
	    else {
	      if (metric[1]>metric[0]) {
		if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1){
		  harq_ack[0] = 1; // ACK
		  harq_ack[1] = 1; // ACK
		  tdd_multiplexing_mask = 0x3;
		}
		else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1){
		  harq_ack[0] = 6; // NACK/DTX
		  harq_ack[1] = 1; // ACK
		  tdd_multiplexing_mask = 0x2;
		}
		else {
		  harq_ack[0] = 4; // DTX
		  harq_ack[1] = 4; // DTX
		}
	      }
	      else {
		if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] == 1){
		  harq_ack[0] = 1; // ACK
		  harq_ack[1] = 6; // NACK/DTX
		  tdd_multiplexing_mask = 0x1;
		}
		else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] != 1){
		  harq_ack[0] = 2; // NACK
		  harq_ack[1] = 6; // NACK/DTX
		}
		else {
		  harq_ack[0] = 4; // DTX
		  harq_ack[1] = 4; // DTX
		}
	      }
	    }
1022
        uci->stat = max(metric[0],metric[1]);
1023
	    fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,1,tdd_multiplexing_mask); // multiplexing mode
knopp's avatar
knopp committed
1024
	  } //else if ((uci->tdd_bundling == 0) && (res==2))
knopp's avatar
knopp committed
1025
	  else if ((uci->tdd_bundling == 0) && (uci->num_pucch_resources==3)){ // multiplexing + no SR, implement Table 10.1.3-6 (Rel14) for multiplexing with M=3
1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102
	    
	    if (harq_ack[0] == 4 ||
		harq_ack[1] == 4 ||
		harq_ack[2] == 4) { // there isn't a likely transmission
	      harq_ack[0] = 4; // DTX
	      harq_ack[1] = 6; // NACK/DTX
	      harq_ack[2] = 6; // NACK/DTX
	      
	    } 
	    else {
	      
	      max_metric = max(metric[0],max(metric[1],metric[2]));
	      
	      if (metric[0]==max_metric) {
		if (pucch_b0b1[0][0] == 1 && pucch_b0b1[0][1] == 1){
		  harq_ack[0] = 1; // ACK
		  harq_ack[1] = 6; // NACK/DTX
		  harq_ack[2] = 6; // NACK/DTX
		  tdd_multiplexing_mask = 0x1;
		}
		else if (pucch_b0b1[0][0] != 1 && pucch_b0b1[0][1] != 1){
		  harq_ack[0] = 2; // NACK
		  harq_ack[1] = 6; // NACK/DTX
		  harq_ack[2] = 6; // NACK/DTX
		}
		else {
		  harq_ack[0] = 4; // DTX
		  harq_ack[1] = 4; // DTX
		  harq_ack[2] = 4; // DTX
		}
	      } // if (metric[0]==max_metric) {
	      else if (metric[1]==max_metric) {
	      
	        if (pucch_b0b1[1][0] == 1 && pucch_b0b1[1][1] != 1){
		  harq_ack[0] = 1; // ACK
		  harq_ack[1] = 1; // ACK
		  harq_ack[2] = 6; // NACK/DTX
		  tdd_multiplexing_mask = 0x3;
		}
		else if (pucch_b0b1[1][0] != 1 && pucch_b0b1[1][1] == 1 ) {
		  harq_ack[0] = 6; // NACK/DTX
		  harq_ack[1] = 1; // ACK
		  harq_ack[2] = 6; // NACK/DTX
		  tdd_multiplexing_mask = 0x2;
		}
		else {
		  harq_ack[0] = 4; // DTX
		  harq_ack[1] = 4; // DTX
		  harq_ack[2] = 4; // DTX
		}
	      } // if (metric[1]==max_metric) {
	      else {
  	        if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] == 1){
		  harq_ack[0] = 1; // ACK
		  harq_ack[1] = 1; // ACK
		  harq_ack[2] = 1; // ACK
		  tdd_multiplexing_mask = 0x7;
		}
		else if (pucch_b0b1[2][0] == 1 && pucch_b0b1[2][1] != 1 ) {
		  harq_ack[0] = 1; // ACK
		  harq_ack[1] = 6; // NACK/DTX
		  harq_ack[2] = 1; // ACK
		  tdd_multiplexing_mask = 0x5;
		}
		else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] == 1 ) {
		  harq_ack[0] = 6; // NACK/DTX
		  harq_ack[1] = 1; // ACK
		  harq_ack[2] = 1; // ACK
		  tdd_multiplexing_mask = 0x6;
		}
		else if (pucch_b0b1[2][0] != 1 && pucch_b0b1[2][1] != 1 ) {
		  harq_ack[0] = 6; // NACK/DTX
		  harq_ack[1] = 6; // NACK/DTX
		  harq_ack[2] = 1; // ACK
		  tdd_multiplexing_mask = 0x4;
		}
	      }
1103 1104
            uci->stat = max_metric;
            fill_uci_harq_indication(eNB,uci,frame,subframe,harq_ack,1,tdd_multiplexing_mask); // multiplexing mode
1105
	    }
knopp's avatar
knopp committed
1106
	  } //else if ((uci->tdd_bundling == 0) && (res==3)) 
knopp's avatar