phy_procedures_lte_ue.c 156 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_ue.c
 * \brief Implementation of UE procedures from 36.213 LTE specifications
24
 * \author R. Knopp, F. Kaltenberger, N. Nikaein
25
26
27
 * \date 2011
 * \version 0.1
 * \company Eurecom
28
 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr
29
30
31
32
 * \note
 * \warning
 */

33
#include "assertions.h"
34
35
36
37
38
39
40
41
42
43
#include "defs.h"
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
#include "SCHED/extern.h"

#ifdef EMOS
#include "SCHED/phy_procedures_emos.h"
#endif

Florian Kaltenberger's avatar
Florian Kaltenberger committed
44
#define DEBUG_PHY_PROC
45
46
47
48
49
50
51
52
53
54
55
56
57
58

#ifndef PUCCH
#define PUCCH
#endif

#include "LAYER2/MAC/extern.h"
#include "LAYER2/MAC/defs.h"
#include "UTIL/LOG/log.h"

#ifdef EMOS
fifo_dump_emos_UE emos_dump_UE;
#endif

#include "UTIL/LOG/vcd_signal_dumper.h"
59
#include "UTIL/OPT/opt.h"
60

61
62
63
64
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif

65
66
67
#include "PHY/defs.h"

#include "PHY/CODING/extern.h"
68

Bilel's avatar
Bilel committed
69
70
#include "T.h"

71
72
73
74
75
76
77
#define DLSCH_RB_ALLOC 0x1fbf  // skip DC RB (total 23/25 RBs)
#define DLSCH_RB_ALLOC_12 0x0aaa  // skip DC RB (total 23/25 RBs)

#define NS_PER_SLOT 500000

extern int oai_exit;

Bilel's avatar
Bilel committed
78
extern double cpuf;
79
80
81



Florian Kaltenberger's avatar
Florian Kaltenberger committed
82
#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR)
83
extern uint32_t downlink_frequency[MAX_NUM_CCs][4];
84
85
#endif

86

87

88
void dump_dlsch(PHY_VARS_UE *ue,UE_rxtx_proc_t *proc,uint8_t eNB_id,uint8_t subframe,uint8_t harq_pid)
89
{
90
  unsigned int coded_bits_per_codeword;
91
92
93
  uint8_t nsymb = (ue->frame_parms.Ncp == 0) ? 14 : 12;

  coded_bits_per_codeword = get_G(&ue->frame_parms,
Gabriel's avatar
Gabriel committed
94
95
96
97
                                  ue->dlsch[subframe_DL(&ue->frame_parms,subframe)&0x1][eNB_id][0]->harq_processes[harq_pid]->nb_rb,
                                  ue->dlsch[subframe_DL(&ue->frame_parms,subframe)&0x1][eNB_id][0]->harq_processes[harq_pid]->rb_alloc_even,
                                  ue->dlsch[subframe_DL(&ue->frame_parms,subframe)&0x1][eNB_id][0]->harq_processes[harq_pid]->Qm,
                                  ue->dlsch[subframe_DL(&ue->frame_parms,subframe)&0x1][eNB_id][0]->harq_processes[harq_pid]->Nl,
Bilel's avatar
Bilel committed
98
                                  ue->pdcch_vars[0&0x1][eNB_id]->num_pdcch_symbols,
99
                                  proc->frame_rx,
100
				  subframe,
101
				  ue->transmission_mode[eNB_id]<7?0:ue->transmission_mode[eNB_id]);
102

103
104
105
  write_output("rxsigF0.m","rxsF0", ue->common_vars.common_vars_rx_data_per_thread[subframe&0x1].rxdataF[0],2*nsymb*ue->frame_parms.ofdm_symbol_size,2,1);
  write_output("rxsigF0_ext.m","rxsF0_ext", ue->pdsch_vars[subframe&0x1][0]->rxdataF_ext[0],2*nsymb*ue->frame_parms.ofdm_symbol_size,1,1);
  write_output("dlsch00_ch0_ext.m","dl00_ch0_ext", ue->pdsch_vars[subframe&0x1][0]->dl_ch_estimates_ext[0],300*nsymb,1,1);
106
  /*
107
108
109
110
    write_output("dlsch01_ch0_ext.m","dl01_ch0_ext",pdsch_vars[0]->dl_ch_estimates_ext[1],300*12,1,1);
    write_output("dlsch10_ch0_ext.m","dl10_ch0_ext",pdsch_vars[0]->dl_ch_estimates_ext[2],300*12,1,1);
    write_output("dlsch11_ch0_ext.m","dl11_ch0_ext",pdsch_vars[0]->dl_ch_estimates_ext[3],300*12,1,1);
    write_output("dlsch_rho.m","dl_rho",pdsch_vars[0]->rho[0],300*12,1,1);
111
  */
112
113
  write_output("dlsch_rxF_comp0.m","dlsch0_rxF_comp0", ue->pdsch_vars[subframe&0x1][0]->rxdataF_comp0[0],300*12,1,1);
  write_output("dlsch_rxF_llr.m","dlsch_llr", ue->pdsch_vars[subframe&0x1][0]->llr[0],coded_bits_per_codeword,1,0);
114

115
116
  write_output("dlsch_mag1.m","dlschmag1",ue->pdsch_vars[subframe&0x1][0]->dl_ch_mag0,300*12,1,1);
  write_output("dlsch_mag2.m","dlschmag2",ue->pdsch_vars[subframe&0x1][0]->dl_ch_magb0,300*12,1,1);
117
118
}

119
void dump_dlsch_SI(PHY_VARS_UE *ue,UE_rxtx_proc_t *proc,uint8_t eNB_id,uint8_t subframe)
120
{
121
  unsigned int coded_bits_per_codeword;
122
  uint8_t nsymb = ((ue->frame_parms.Ncp == 0) ? 14 : 12);
123

124
125
126
  coded_bits_per_codeword = get_G(&ue->frame_parms,
                                  ue->dlsch_SI[eNB_id]->harq_processes[0]->nb_rb,
                                  ue->dlsch_SI[eNB_id]->harq_processes[0]->rb_alloc_even,
127
                                  2,
128
                                  1,
Bilel's avatar
Bilel committed
129
                                  ue->pdcch_vars[0&0x1][eNB_id]->num_pdcch_symbols,
130
                                  proc->frame_rx,
131
				  subframe,
132
				  0);
133
  LOG_D(PHY,"[UE %d] Dumping dlsch_SI : ofdm_symbol_size %d, nsymb %d, nb_rb %d, mcs %d, nb_rb %d, num_pdcch_symbols %d,G %d\n",
134
135
        ue->Mod_id,
	ue->frame_parms.ofdm_symbol_size,
136
	nsymb,
137
138
139
        ue->dlsch_SI[eNB_id]->harq_processes[0]->nb_rb,
        ue->dlsch_SI[eNB_id]->harq_processes[0]->mcs,
        ue->dlsch_SI[eNB_id]->harq_processes[0]->nb_rb,
Bilel's avatar
Bilel committed
140
        ue->pdcch_vars[0&0x1][eNB_id]->num_pdcch_symbols,
141
        coded_bits_per_codeword);
142

143
  write_output("rxsig0.m","rxs0", &ue->common_vars.rxdata[0][subframe*ue->frame_parms.samples_per_tti],ue->frame_parms.samples_per_tti,1,1);
144

145
  write_output("rxsigF0.m","rxsF0", ue->common_vars.common_vars_rx_data_per_thread[subframe&0x1].rxdataF[0],nsymb*ue->frame_parms.ofdm_symbol_size,1,1);
146
147
  write_output("rxsigF0_ext.m","rxsF0_ext", ue->pdsch_vars_SI[0]->rxdataF_ext[0],2*nsymb*ue->frame_parms.ofdm_symbol_size,1,1);
  write_output("dlsch00_ch0_ext.m","dl00_ch0_ext", ue->pdsch_vars_SI[0]->dl_ch_estimates_ext[0],ue->frame_parms.N_RB_DL*12*nsymb,1,1);
148
  /*
149
150
151
152
    write_output("dlsch01_ch0_ext.m","dl01_ch0_ext",pdsch_vars[0]->dl_ch_estimates_ext[1],300*12,1,1);
    write_output("dlsch10_ch0_ext.m","dl10_ch0_ext",pdsch_vars[0]->dl_ch_estimates_ext[2],300*12,1,1);
    write_output("dlsch11_ch0_ext.m","dl11_ch0_ext",pdsch_vars[0]->dl_ch_estimates_ext[3],300*12,1,1);
    write_output("dlsch_rho.m","dl_rho",pdsch_vars[0]->rho[0],300*12,1,1);
153
  */
154
155
  write_output("dlsch_rxF_comp0.m","dlsch0_rxF_comp0", ue->pdsch_vars_SI[0]->rxdataF_comp0[0],ue->frame_parms.N_RB_DL*12*nsymb,1,1);
  write_output("dlsch_rxF_llr.m","dlsch_llr", ue->pdsch_vars_SI[0]->llr[0],coded_bits_per_codeword,1,0);
156

157
158
  write_output("dlsch_mag1.m","dlschmag1",ue->pdsch_vars_SI[0]->dl_ch_mag0,300*nsymb,1,1);
  write_output("dlsch_mag2.m","dlschmag2",ue->pdsch_vars_SI[0]->dl_ch_magb0,300*nsymb,1,1);
159
  sleep(1);
160
161
162
  exit(-1);
}

Florian Kaltenberger's avatar
Florian Kaltenberger committed
163
#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR)
knopp's avatar
   
knopp committed
164
165
//unsigned int gain_table[31] = {100,112,126,141,158,178,200,224,251,282,316,359,398,447,501,562,631,708,794,891,1000,1122,1258,1412,1585,1778,1995,2239,2512,2818,3162};
/*
166
167
  unsigned int get_tx_amp_prach(int power_dBm, int power_max_dBm, int N_RB_UL)
  {
168

169
  int gain_dB = power_dBm - power_max_dBm;
knopp's avatar
   
knopp committed
170
171
172
173
  int amp_x_100;

  switch (N_RB_UL) {
  case 6:
174
175
  amp_x_100 = AMP;      // PRACH is 6 PRBS so no scale
  break;
knopp's avatar
   
knopp committed
176
  case 15:
177
178
  amp_x_100 = 158*AMP;  // 158 = 100*sqrt(15/6)
  break;
knopp's avatar
   
knopp committed
179
  case 25:
180
181
  amp_x_100 = 204*AMP;  // 204 = 100*sqrt(25/6)
  break;
knopp's avatar
   
knopp committed
182
  case 50:
183
184
  amp_x_100 = 286*AMP;  // 286 = 100*sqrt(50/6)
  break;
knopp's avatar
   
knopp committed
185
  case 75:
186
187
  amp_x_100 = 354*AMP;  // 354 = 100*sqrt(75/6)
  break;
knopp's avatar
   
knopp committed
188
  case 100:
189
190
  amp_x_100 = 408*AMP;  // 408 = 100*sqrt(100/6)
  break;
knopp's avatar
   
knopp committed
191
  default:
192
193
194
  LOG_E(PHY,"Unknown PRB size %d\n",N_RB_UL);
  mac_xface->macphy_exit("");
  break;
knopp's avatar
   
knopp committed
195
  }
196
  if (gain_dB < -30) {
197
  return(amp_x_100/3162);
198
  } else if (gain_dB>0)
199
  return(amp_x_100);
200
  else
201
202
  return(amp_x_100/gain_table[-gain_dB]);  // 245 corresponds to the factor sqrt(25/6)
  }
knopp's avatar
   
knopp committed
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
*/

unsigned int get_tx_amp(int power_dBm, int power_max_dBm, int N_RB_UL, int nb_rb)
{

  int gain_dB = power_dBm - power_max_dBm;
  double gain_lin;

  gain_lin = pow(10,.1*gain_dB);
  if ((nb_rb >0) && (nb_rb <= N_RB_UL)) {
    return((int)(AMP*sqrt(gain_lin*N_RB_UL/(double)nb_rb)));
  }
  else {
    LOG_E(PHY,"Illegal nb_rb/N_RB_UL combination (%d/%d)\n",nb_rb,N_RB_UL);
    mac_xface->macphy_exit("");
  }
  return(0);
}

222
223
#endif

224
void dump_dlsch_ra(PHY_VARS_UE *ue,UE_rxtx_proc_t *proc,uint8_t eNB_id,uint8_t subframe)
225
{
226
  unsigned int coded_bits_per_codeword;
227
  uint8_t nsymb = ((ue->frame_parms.Ncp == 0) ? 14 : 12);
228

229
230
231
  coded_bits_per_codeword = get_G(&ue->frame_parms,
                                  ue->dlsch_ra[eNB_id]->harq_processes[0]->nb_rb,
                                  ue->dlsch_ra[eNB_id]->harq_processes[0]->rb_alloc_even,
232
                                  2,
233
                                  1,
Bilel's avatar
Bilel committed
234
                                  ue->pdcch_vars[0&0x1][eNB_id]->num_pdcch_symbols,
235
                                  proc->frame_rx,
236
				  subframe,
237
				  0);
238
  LOG_D(PHY,"[UE %d] Dumping dlsch_ra : nb_rb %d, mcs %d, nb_rb %d, num_pdcch_symbols %d,G %d\n",
239
240
241
242
        ue->Mod_id,
        ue->dlsch_ra[eNB_id]->harq_processes[0]->nb_rb,
        ue->dlsch_ra[eNB_id]->harq_processes[0]->mcs,
        ue->dlsch_ra[eNB_id]->harq_processes[0]->nb_rb,
Bilel's avatar
Bilel committed
243
        ue->pdcch_vars[0&0x1][eNB_id]->num_pdcch_symbols,
244
        coded_bits_per_codeword);
245

246
  write_output("rxsigF0.m","rxsF0", ue->common_vars.common_vars_rx_data_per_thread[subframe&0x1].rxdataF[0],2*12*ue->frame_parms.ofdm_symbol_size,2,1);
247
248
  write_output("rxsigF0_ext.m","rxsF0_ext", ue->pdsch_vars_ra[0]->rxdataF_ext[0],2*12*ue->frame_parms.ofdm_symbol_size,1,1);
  write_output("dlsch00_ch0_ext.m","dl00_ch0_ext", ue->pdsch_vars_ra[0]->dl_ch_estimates_ext[0],300*nsymb,1,1);
249
  /*
250
251
252
253
    write_output("dlsch01_ch0_ext.m","dl01_ch0_ext",pdsch_vars[0]->dl_ch_estimates_ext[1],300*12,1,1);
    write_output("dlsch10_ch0_ext.m","dl10_ch0_ext",pdsch_vars[0]->dl_ch_estimates_ext[2],300*12,1,1);
    write_output("dlsch11_ch0_ext.m","dl11_ch0_ext",pdsch_vars[0]->dl_ch_estimates_ext[3],300*12,1,1);
    write_output("dlsch_rho.m","dl_rho",pdsch_vars[0]->rho[0],300*12,1,1);
254
  */
255
256
  write_output("dlsch_rxF_comp0.m","dlsch0_rxF_comp0", ue->pdsch_vars_ra[0]->rxdataF_comp0[0],300*nsymb,1,1);
  write_output("dlsch_rxF_llr.m","dlsch_llr", ue->pdsch_vars_ra[0]->llr[0],coded_bits_per_codeword,1,0);
257

258
259
  write_output("dlsch_mag1.m","dlschmag1",ue->pdsch_vars_ra[0]->dl_ch_mag0,300*nsymb,1,1);
  write_output("dlsch_mag2.m","dlschmag2",ue->pdsch_vars_ra[0]->dl_ch_magb0,300*nsymb,1,1);
260
}
261

262
void phy_reset_ue(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index)
263
{
264
265
266

  // This flushes ALL DLSCH and ULSCH harq buffers of ALL connected eNBs...add the eNB_index later
  // for more flexibility
267

268
  uint8_t i,j,k,s;
269
  PHY_VARS_UE *ue = PHY_vars_UE_g[Mod_id][CC_id];
270

Bilel's avatar
Bilel committed
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
  //[NUMBER_OF_RX_THREAD=2][NUMBER_OF_CONNECTED_eNB_MAX][2];
  for(int l=0; l<2; l++) {
      for(i=0; i<NUMBER_OF_CONNECTED_eNB_MAX; i++) {
          for(j=0; j<2; j++) {
              //DL HARQ
              if(ue->dlsch[l][i][j]) {
                  for(k=0; k<NUMBER_OF_HARQ_PID_MAX && ue->dlsch[l][i][j]->harq_processes[k]; k++) {
                      ue->dlsch[l][i][j]->harq_processes[k]->status = SCH_IDLE;
                      for (s=0; s<10; s++) {
                          // reset ACK/NACK bit to DTX for all subframes s = 0..9
                          ue->dlsch[l][i][j]->harq_ack[s].ack = 2;
                          ue->dlsch[l][i][j]->harq_ack[s].send_harq_status = 0;
                          ue->dlsch[l][i][j]->harq_ack[s].vDAI_UL = 0xff;
                          ue->dlsch[l][i][j]->harq_ack[s].vDAI_DL = 0xff;
                      }
                  }
              }
288
          }
289

Bilel's avatar
Bilel committed
290
291
292
293
294
295
          //UL HARQ
          if(ue->ulsch[i]) {
              for(k=0; k<NUMBER_OF_HARQ_PID_MAX && ue->ulsch[i]->harq_processes[k]; k++) {
                  ue->ulsch[i]->harq_processes[k]->status = SCH_IDLE;
                  //Set NDIs for all UL HARQs to 0
                  //  ue->ulsch[i]->harq_processes[k]->Ndi = 0;
296

Bilel's avatar
Bilel committed
297
298
              }
          }
299

Bilel's avatar
Bilel committed
300
301
          // flush Msg3 buffer
          ue->ulsch_Msg3_active[i] = 0;
302

Bilel's avatar
Bilel committed
303
      }
304
305
306
  }
}

307
308
void ra_failed(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index)
{
309
310

  // if contention resolution fails, go back to PRACH
knopp's avatar
   
knopp committed
311
  PHY_vars_UE_g[Mod_id][CC_id]->UE_mode[eNB_index] = PRACH;
Bilel's avatar
Bilel committed
312
313
314
315
  PHY_vars_UE_g[Mod_id][CC_id]->pdcch_vars[0][eNB_index]->crnti_is_temporary = 0;
  PHY_vars_UE_g[Mod_id][CC_id]->pdcch_vars[0][eNB_index]->crnti = 0;
  PHY_vars_UE_g[Mod_id][CC_id]->pdcch_vars[1][eNB_index]->crnti_is_temporary = 0;
  PHY_vars_UE_g[Mod_id][CC_id]->pdcch_vars[1][eNB_index]->crnti = 0;
316
  LOG_E(PHY,"[UE %d] Random-access procedure fails, going back to PRACH, setting SIStatus = 0, discard temporary C-RNTI and State RRC_IDLE\n",Mod_id);
317
318
319
  //mac_xface->macphy_exit("");
}

320
321
void ra_succeeded(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index)
{
322
323
324

  int i;

325
  LOG_I(PHY,"[UE %d][RAPROC] Random-access procedure succeeded. Set C-RNTI = Temporary C-RNTI\n",Mod_id);
326

Bilel's avatar
Bilel committed
327
328
  PHY_vars_UE_g[Mod_id][CC_id]->pdcch_vars[0][eNB_index]->crnti_is_temporary = 0;
  PHY_vars_UE_g[Mod_id][CC_id]->pdcch_vars[1][eNB_index]->crnti_is_temporary = 0;
329
  PHY_vars_UE_g[Mod_id][CC_id]->ulsch_Msg3_active[eNB_index] = 0;
knopp's avatar
   
knopp committed
330
  PHY_vars_UE_g[Mod_id][CC_id]->UE_mode[eNB_index] = PUSCH;
331

332
  for (i=0; i<8; i++) {
333
334
    if (PHY_vars_UE_g[Mod_id][CC_id]->ulsch[eNB_index]->harq_processes[i]) {
      PHY_vars_UE_g[Mod_id][CC_id]->ulsch[eNB_index]->harq_processes[i]->status=IDLE;
Bilel's avatar
Bilel committed
335
336
      PHY_vars_UE_g[Mod_id][CC_id]->dlsch[0][eNB_index][0]->harq_processes[i]->round=0;
      PHY_vars_UE_g[Mod_id][CC_id]->dlsch[1][eNB_index][0]->harq_processes[i]->round=0;
337
    }
338
339
340
341
342
  }


}

343
344
UE_MODE_t get_ue_mode(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index)
{
345

knopp's avatar
   
knopp committed
346
  return(PHY_vars_UE_g[Mod_id][CC_id]->UE_mode[eNB_index]);
347
348

}
349
void process_timing_advance_rar(PHY_VARS_UE *ue,UE_rxtx_proc_t *proc,uint16_t timing_advance) {
350

351
  ue->timing_advance = timing_advance*4;
352
353


354
#ifdef DEBUG_PHY_PROC
Cedric Roux's avatar
Cedric Roux committed
355
356
357
  /* TODO: fix this log, what is 'HW timing advance'? */
  /*LOG_I(PHY,"[UE %d] AbsoluteSubFrame %d.%d, received (rar) timing_advance %d, HW timing advance %d\n",ue->Mod_id,proc->frame_rx, proc->subframe_rx, ue->timing_advance);*/
  LOG_I(PHY,"[UE %d] AbsoluteSubFrame %d.%d, received (rar) timing_advance %d\n",ue->Mod_id,proc->frame_rx, proc->subframe_rx, ue->timing_advance);
358
359
360
361
#endif

}

362
363
void process_timing_advance(uint8_t Mod_id,uint8_t CC_id,int16_t timing_advance)
{
364

gauthier's avatar
gauthier committed
365
  //  uint32_t frame = PHY_vars_UE_g[Mod_id]->frame;
366

367
  // timing advance has Q1.5 format
368
  timing_advance = timing_advance - 31;
369

370
371
  PHY_vars_UE_g[Mod_id][CC_id]->timing_advance = PHY_vars_UE_g[Mod_id][CC_id]->timing_advance+timing_advance*4; //this is for 25RB only!!!

372

373
  LOG_D(PHY,"[UE %d] Got timing advance %d from MAC, new value %d\n",Mod_id, timing_advance, PHY_vars_UE_g[Mod_id][CC_id]->timing_advance);
374

375
376
377

}

378
uint8_t is_SR_TXOp(PHY_VARS_UE *ue,UE_rxtx_proc_t *proc,uint8_t eNB_id)
379
380
{

381
382
  int subframe=proc->subframe_tx;

383
  LOG_D(PHY,"[UE %d][SR %x] Frame %d subframe %d Checking for SR TXOp (sr_ConfigIndex %d)\n",
Bilel's avatar
Bilel committed
384
        ue->Mod_id,ue->pdcch_vars[proc->subframe_rx & 0x1][eNB_id]->crnti,proc->frame_tx,subframe,
385
        ue->scheduling_request_config[eNB_id].sr_ConfigIndex);
386

387
388
  if (ue->scheduling_request_config[eNB_id].sr_ConfigIndex <= 4) {        // 5 ms SR period
    if ((subframe%5) == ue->scheduling_request_config[eNB_id].sr_ConfigIndex)
389
      return(1);
390
391
  } else if (ue->scheduling_request_config[eNB_id].sr_ConfigIndex <= 14) { // 10 ms SR period
    if (subframe==(ue->scheduling_request_config[eNB_id].sr_ConfigIndex-5))
392
      return(1);
393
  } else if (ue->scheduling_request_config[eNB_id].sr_ConfigIndex <= 34) { // 20 ms SR period
394
    if ((10*(proc->frame_tx&1)+subframe) == (ue->scheduling_request_config[eNB_id].sr_ConfigIndex-15))
395
      return(1);
396
  } else if (ue->scheduling_request_config[eNB_id].sr_ConfigIndex <= 74) { // 40 ms SR period
397
    if ((10*(proc->frame_tx&3)+subframe) == (ue->scheduling_request_config[eNB_id].sr_ConfigIndex-35))
398
      return(1);
399
  } else if (ue->scheduling_request_config[eNB_id].sr_ConfigIndex <= 154) { // 80 ms SR period
400
    if ((10*(proc->frame_tx&7)+subframe) == (ue->scheduling_request_config[eNB_id].sr_ConfigIndex-75))
401
402
403
404
405
406
      return(1);
  }

  return(0);
}

407
408
409
410
411
412
413
414
415
416
417
uint8_t is_cqi_TXOp(PHY_VARS_UE *ue,UE_rxtx_proc_t *proc,uint8_t eNB_id)
{
  int subframe = proc->subframe_tx;
  int frame    = proc->frame_tx;
  CQI_REPORTPERIODIC *cqirep = &ue->cqi_report_config[eNB_id].CQI_ReportPeriodic;

  //LOG_I(PHY,"[UE %d][CRNTI %x] AbsSubFrame %d.%d Checking for CQI TXOp (cqi_ConfigIndex %d) isCQIOp %d\n",
  //      ue->Mod_id,ue->pdcch_vars[eNB_id]->crnti,frame,subframe,
  //      cqirep->cqi_PMI_ConfigIndex,
  //      (((10*frame + subframe) % cqirep->Npd) == cqirep->N_OFFSET_CQI));

418
419
420
  if (cqirep->cqi_PMI_ConfigIndex==-1)
    return(0);
  else if (((10*frame + subframe) % cqirep->Npd) == cqirep->N_OFFSET_CQI)
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
    return(1);
  else
    return(0);
}
uint8_t is_ri_TXOp(PHY_VARS_UE *ue,UE_rxtx_proc_t *proc,uint8_t eNB_id)
{


  int subframe = proc->subframe_tx;
  int frame    = proc->frame_tx;
  CQI_REPORTPERIODIC *cqirep = &ue->cqi_report_config[eNB_id].CQI_ReportPeriodic;
  int log2Mri = cqirep->ri_ConfigIndex/161;
  int N_OFFSET_RI = cqirep->ri_ConfigIndex % 161;

  //LOG_I(PHY,"[UE %d][CRNTI %x] AbsSubFrame %d.%d Checking for RI TXOp (ri_ConfigIndex %d) isRIOp %d\n",
  //      ue->Mod_id,ue->pdcch_vars[eNB_id]->crnti,frame,subframe,
  //      cqirep->ri_ConfigIndex,
  //      (((10*frame + subframe + cqirep->N_OFFSET_CQI - N_OFFSET_RI) % (cqirep->Npd<<log2Mri)) == 0));
439
440
441
  if (cqirep->ri_ConfigIndex==-1)
    return(0);
  else if (((10*frame + subframe + cqirep->N_OFFSET_CQI - N_OFFSET_RI) % (cqirep->Npd<<log2Mri)) == 0)
442
443
444
445
446
    return(1);
  else
    return(0);
}

Bilel's avatar
Bilel committed
447
448
449
450
451
452
453
454
455
void compute_cqi_ri_resources(PHY_VARS_UE *ue,
                              LTE_UE_ULSCH_t *ulsch,
                              uint8_t eNB_id,
                              uint16_t rnti,
                              uint16_t p_rnti,
                              uint16_t cba_rnti,
                              uint8_t cqi_status,
                              uint8_t ri_status)
{
456
457
    //PHY_MEASUREMENTS *meas = &ue->measurements;
    //uint8_t transmission_mode = ue->transmission_mode[eNB_id];
Bilel's avatar
Bilel committed
458
459


460
    //LOG_I(PHY,"compute_cqi_ri_resources O_RI %d O %d uci format %d \n",ulsch->O_RI,ulsch->O,ulsch->uci_format);
Bilel's avatar
Bilel committed
461
462
463
464
465
    if (cqi_status == 1 || ri_status == 1)
    {
        ulsch->O = 4;
    }
}
Bilel's avatar
Bilel committed
466

467
void ue_compute_srs_occasion(PHY_VARS_UE *ue,UE_rxtx_proc_t *proc,uint8_t eNB_id,uint8_t isSubframeSRS) 
Bilel's avatar
Bilel committed
468
{
469
470
471
472
473
474
475
476
477
  
  LTE_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
  int frame_tx    = proc->frame_tx;
  int subframe_tx = proc->subframe_tx;
  SOUNDINGRS_UL_CONFIG_DEDICATED *pSoundingrs_ul_config_dedicated=&ue->soundingrs_ul_config_dedicated[eNB_id];
  uint16_t srsPeriodicity;
  uint16_t srsOffset;
  uint8_t is_pucch2_subframe = 0;
  uint8_t is_sr_an_subframe  = 0;
Bilel's avatar
Bilel committed
478
479
480

  // check for SRS opportunity
  pSoundingrs_ul_config_dedicated->srsUeSubframe   = 0;
481
  pSoundingrs_ul_config_dedicated->srsCellSubframe = isSubframeSRS;
Bilel's avatar
Bilel committed
482

483
484
  if (isSubframeSRS) {  
    LOG_D(PHY," SrsDedicatedSetup: %d \n",pSoundingrs_ul_config_dedicated->srsConfigDedicatedSetup);
fnabet's avatar
fnabet committed
485
486
      if(pSoundingrs_ul_config_dedicated->srsConfigDedicatedSetup)
      {
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
          compute_srs_pos(frame_parms->frame_type, pSoundingrs_ul_config_dedicated->srs_ConfigIndex, &srsPeriodicity, &srsOffset);

          LOG_D(PHY," srsPeriodicity: %d srsOffset: %d isSubframeSRS %d \n",srsPeriodicity,srsOffset,isSubframeSRS);

          // transmit SRS if the four following constraints are respected:
          // - UE is configured to transmit SRS
          // - SRS are configured in current subframe
          // - UE is configured to send SRS in this subframe

          // 36.213 8.2
          // 1- A UE shall not transmit SRS whenever SRS and PUCCH format 2/2a/2b transmissions happen to coincide in the same subframe
          // 2- A UE shall not transmit SRS whenever SRS transmit
          //    on and PUCCH transmission carrying ACK/NACK and/or
          //    positive SR happen to coincide in the same subframe if the parameter
          //    Simultaneous-AN-and-SRS is FALSE

          // check PUCCH format 2/2a/2b transmissions
          is_pucch2_subframe = is_cqi_TXOp(ue,proc,eNB_id) && (ue->cqi_report_config[eNB_id].CQI_ReportPeriodic.cqi_PMI_ConfigIndex>0);
          is_pucch2_subframe = (is_ri_TXOp(ue,proc,eNB_id) && (ue->cqi_report_config[eNB_id].CQI_ReportPeriodic.ri_ConfigIndex>0)) || is_pucch2_subframe;

          // check ACK/SR transmission
          if(frame_parms->soundingrs_ul_config_common.ackNackSRS_SimultaneousTransmission == FALSE)
          {
              if(is_SR_TXOp(ue,proc,eNB_id))
              {
                  uint32_t SR_payload = 0;
                  if (ue->mac_enabled==1)
                  {
                      int Mod_id = ue->Mod_id;
                      int CC_id = ue->CC_id;
                      SR_payload = mac_xface->ue_get_SR(Mod_id,
                              CC_id,
                              frame_tx,
                              eNB_id,
Bilel's avatar
Bilel committed
521
                              ue->pdcch_vars[proc->subframe_rx & 0x1][eNB_id]->crnti,
522
523
524
525
526
527
528
529
530
                              subframe_tx); // subframe used for meas gap

                      if (SR_payload > 0)
                          is_sr_an_subframe = 1;
                  }
              }

              uint8_t pucch_ack_payload[2];
              if (get_ack(&ue->frame_parms,
Gabriel's avatar
Gabriel committed
531
                      ue->dlsch[subframe_DL(&ue->frame_parms,proc->subframe_rx)&0x1][eNB_id][0]->harq_ack,
Bilel's avatar
Bilel committed
532
                      subframe_tx,proc->subframe_rx,pucch_ack_payload,0) > 0)
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
              {
                  is_sr_an_subframe = 1;
              }
          }

          // check SRS UE opportunity
          if( isSubframeSRS  &&
                  (((10*frame_tx+subframe_tx) % srsPeriodicity) == srsOffset)
          )
          {
              if ((is_pucch2_subframe == 0) && (is_sr_an_subframe == 0))
              {
                  pSoundingrs_ul_config_dedicated->srsUeSubframe = 1;
                  ue->ulsch[eNB_id]->srs_active   = 1;
                  ue->ulsch[eNB_id]->Nsymb_pusch  = 12-(frame_parms->Ncp<<1)- ue->ulsch[eNB_id]->srs_active;
              }
              else
              {
                  LOG_I(PHY,"DROP UE-SRS-TX for this subframe %d.%d: collision with PUCCH2 or SR/AN: PUCCH2-occasion: %d, SR-AN-occasion[simSRS-SR-AN %d]: %d  \n", frame_tx, subframe_tx, is_pucch2_subframe, frame_parms->soundingrs_ul_config_common.ackNackSRS_SimultaneousTransmission, is_sr_an_subframe);
              }
          }
fnabet's avatar
fnabet committed
554
      }
fnabet's avatar
fnabet committed
555
      LOG_D(PHY," srsCellSubframe: %d, srsUeSubframe: %d, Nsymb-pusch: %d \n", pSoundingrs_ul_config_dedicated->srsCellSubframe, pSoundingrs_ul_config_dedicated->srsUeSubframe, ue->ulsch[eNB_id]->Nsymb_pusch);
Bilel's avatar
Bilel committed
556
557
558
  }
}

559

knopp's avatar
knopp committed
560
561
562
563
564
565
566
567
568
569
570
571
void get_cqipmiri_params(PHY_VARS_UE *ue,uint8_t eNB_id)
{

  CQI_REPORTPERIODIC *cqirep = &ue->cqi_report_config[eNB_id].CQI_ReportPeriodic;
  int cqi_PMI_ConfigIndex = cqirep->cqi_PMI_ConfigIndex;

  if (ue->frame_parms.frame_type == FDD) {
    if (cqi_PMI_ConfigIndex <= 1) {        // 2 ms CQI_PMI period
      cqirep->Npd = 2;
      cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex;
    } else if (cqi_PMI_ConfigIndex <= 6) { // 5 ms CQI_PMI period
      cqirep->Npd = 5;
572
      cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-2;
knopp's avatar
knopp committed
573
574
    } else if (cqi_PMI_ConfigIndex <=16) { // 10ms CQI_PMI period
      cqirep->Npd = 10;
575
      cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-7;
knopp's avatar
knopp committed
576
577
    } else if (cqi_PMI_ConfigIndex <= 36) { // 20 ms CQI_PMI period
      cqirep->Npd = 20;
578
      cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-17;
knopp's avatar
knopp committed
579
580
    } else if (cqi_PMI_ConfigIndex <= 76) { // 40 ms CQI_PMI period
      cqirep->Npd = 40;
581
      cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-37;
knopp's avatar
knopp committed
582
583
    } else if (cqi_PMI_ConfigIndex <= 156) { // 80 ms CQI_PMI period
      cqirep->Npd = 80;
584
      cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-77;
knopp's avatar
knopp committed
585
586
    } else if (cqi_PMI_ConfigIndex <= 316) { // 160 ms CQI_PMI period
      cqirep->Npd = 160;
587
      cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-157;
knopp's avatar
knopp committed
588
589
590
591
592
    }
    else if (cqi_PMI_ConfigIndex > 317) {
      
      if (cqi_PMI_ConfigIndex <= 349) { // 32 ms CQI_PMI period
	cqirep->Npd = 32;
593
      cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-318;
knopp's avatar
knopp committed
594
595
596
      }
      else if (cqi_PMI_ConfigIndex <= 413) { // 64 ms CQI_PMI period
	cqirep->Npd = 64;
597
	cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-350;
knopp's avatar
knopp committed
598
599
600
      }
      else if (cqi_PMI_ConfigIndex <= 541) { // 128 ms CQI_PMI period
	cqirep->Npd = 128;
601
	cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-414;
knopp's avatar
knopp committed
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
      }  
    }
  }
  else { // TDD
   if (cqi_PMI_ConfigIndex == 0) {        // all UL subframes
     cqirep->Npd = 1;
     cqirep->N_OFFSET_CQI = 0;
   } else if (cqi_PMI_ConfigIndex <= 6) { // 5 ms CQI_PMI period
     cqirep->Npd = 5;
     cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-1;
   } else if (cqi_PMI_ConfigIndex <=16) { // 10ms CQI_PMI period
     cqirep->Npd = 10;
     cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-6;
   } else if (cqi_PMI_ConfigIndex <= 36) { // 20 ms CQI_PMI period
     cqirep->Npd = 20;
     cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-16;
   } else if (cqi_PMI_ConfigIndex <= 76) { // 40 ms CQI_PMI period
     cqirep->Npd = 40;
     cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-36;
   } else if (cqi_PMI_ConfigIndex <= 156) { // 80 ms CQI_PMI period
     cqirep->Npd = 80;
     cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-76;
   } else if (cqi_PMI_ConfigIndex <= 316) { // 160 ms CQI_PMI period
     cqirep->Npd = 160;
     cqirep->N_OFFSET_CQI = cqi_PMI_ConfigIndex-156;
   }
  }
}

631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
PUCCH_FMT_t get_pucch_format(lte_frame_type_t frame_type,
                             lte_prefix_type_t cyclic_prefix_type,
                             uint8_t SR_payload,
                             uint8_t nb_cw,
                             uint8_t cqi_status,
                             uint8_t ri_status)
{
  if((cqi_status == 0) && (ri_status==0))
  {
      // PUCCH Format 1 1a 1b
      // 1- SR only ==> PUCCH format 1
      // 2- 1bit Ack/Nack with/without SR  ==> PUCCH format 1a
      // 3- 2bits Ack/Nack with/without SR ==> PUCCH format 1b
      if(nb_cw == 1)
      {
          return pucch_format1a;
      }
      if(nb_cw == 2)
      {
          return pucch_format1b;
      }
      if(SR_payload == 1)
      {
Gabriel's avatar
Gabriel committed
654
655
          return pucch_format1;
          /*
656
657
658
659
660
661
          if (frame_type == FDD) {
              return pucch_format1;
          } else if (frame_type == TDD) {
              return pucch_format1b;
          } else {
	      AssertFatal(1==0,"Unknown frame_type");
Gabriel's avatar
Gabriel committed
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
      }
  }
  else
  {
      // PUCCH Format 2 2a 2b
      // 1- CQI only or RI only  ==> PUCCH format 2
      // 2- CQI or RI + 1bit Ack/Nack for normal CP  ==> PUCCH format 2a
      // 3- CQI or RI + 2bits Ack/Nack for normal CP ==> PUCCH format 2b
      // 4- CQI or RI + Ack/Nack for extended CP ==> PUCCH format 2
      if(nb_cw == 0)
      {
          return pucch_format2;
      }
      if(cyclic_prefix_type == NORMAL)
      {
          if(nb_cw == 1)
          {
              return pucch_format2a;
          }
          if(nb_cw == 2)
          {
              return pucch_format2b;
          }
      }
      else
      {
          return pucch_format2;
      }
  }
Bilel's avatar
Bilel committed
692
  return pucch_format1a;
693
}
694
uint16_t get_n1_pucch(PHY_VARS_UE *ue,
695
		      UE_rxtx_proc_t *proc,
696
                      harq_status_t *harq_ack,
697
698
699
700
                      uint8_t eNB_id,
                      uint8_t *b,
                      uint8_t SR)
{
701

702
  LTE_DL_FRAME_PARMS *frame_parms=&ue->frame_parms;
gauthier's avatar
gauthier committed
703
  uint8_t nCCE0,nCCE1,harq_ack1,harq_ack0;
704
  ANFBmode_t bundling_flag;
gauthier's avatar
gauthier committed
705
  uint16_t n1_pucch0=0,n1_pucch1=0;
706
707
  static uint8_t candidate_dl[9]; // which downlink(s) the current ACK/NACK is associating to
  uint8_t last_dl=0xff; // the last downlink with valid DL-DCI. for calculating the PUCCH resource index
708
709
710
  int sf;
  int M;
  // clear this, important for case where n1_pucch selection is not used
711
  int subframe=proc->subframe_tx;
712

713
  ue->pucch_sel[subframe] = 0;
714
715
716

  if (frame_parms->frame_type == FDD ) { // FDD
    sf = (subframe<4)? subframe+6 : subframe-4;
Bilel's avatar
Bilel committed
717
    LOG_D(PHY,"n1_pucch_UE: subframe %d, nCCE %d\n",sf,ue->pdcch_vars[proc->subframe_rx&0x1][eNB_id]->nCCE[sf]);
718
719

    if (SR == 0)
Bilel's avatar
Bilel committed
720
      return(frame_parms->pucch_config_common.n1PUCCH_AN + ue->pdcch_vars[proc->subframe_rx & 0x1][eNB_id]->nCCE[sf]);
721
    else
722
      return(ue->scheduling_request_config[eNB_id].sr_PUCCH_ResourceIndex);
723
  } else {
724

725
    bundling_flag = ue->pucch_config_dedicated[eNB_id].tdd_AckNackFeedbackMode;
726
#ifdef DEBUG_PHY_PROC
727
728

    if (bundling_flag==bundling) {
729
      LOG_D(PHY,"[UE%d] Frame %d subframe %d : get_n1_pucch, bundling, SR %d/%d\n",ue->Mod_id,proc->frame_tx,subframe,SR,
730
            ue->scheduling_request_config[eNB_id].sr_PUCCH_ResourceIndex);
731
    } else {
732
      LOG_D(PHY,"[UE%d] Frame %d subframe %d : get_n1_pucch, multiplexing, SR %d/%d\n",ue->Mod_id,proc->frame_tx,subframe,SR,
733
            ue->scheduling_request_config[eNB_id].sr_PUCCH_ResourceIndex);
734
    }
735

736
#endif
737

738
739
740
741
742
    switch (frame_parms->tdd_config) {
    case 1:  // DL:S:UL:UL:DL:DL:S:UL:UL:DL

      harq_ack0 = 2; // DTX
      M=1;
743

744
      // This is the offset for a particular subframe (2,3,4) => (0,2,4)
745
746
747
      if (subframe == 2) {  // ACK subframes 5,6
        candidate_dl[0] = 6;
        candidate_dl[1] = 5;
748
749
        M=2;
      } else if (subframe == 3) { // ACK subframe 9
750
751
752
753
        candidate_dl[0] = 9;
      } else if (subframe == 7) { // ACK subframes 0,1
        candidate_dl[0] = 1;
        candidate_dl[1] = 0;
754
755
        M=2;
      } else if (subframe == 8) { // ACK subframes 4
756
        candidate_dl[0] = 4;
757
      } else {
758
        LOG_E(PHY,"[UE%d] : Frame %d phy_procedures_lte.c: get_n1pucch, illegal tx-subframe %d for tdd_config %d\n",
759
              ue->Mod_id,proc->frame_tx,subframe,frame_parms->tdd_config);
760
        return(0);
761
762
      }

763
764
765
766
767
768
769
770
771
      // checking which downlink candidate is the last downlink with valid DL-DCI
      int k;
      for (k=0;k<M;k++) {
        if (harq_ack[candidate_dl[k]].send_harq_status>0) {
          last_dl = candidate_dl[k];
          break;
        }
      }
      if (last_dl >= 10) {
772
773
        LOG_E(PHY,"[UE%d] : Frame %d phy_procedures_lte.c: get_n1pucch, illegal rx-subframe %d (tx-subframe %d) for tdd_config %d\n",
              ue->Mod_id,proc->frame_tx,last_dl,subframe,frame_parms->tdd_config);
774
775
776
777
778
779
780
        return (0);
      }

      LOG_D(PHY,"SFN/SF %d/%d calculating n1_pucch0 from last_dl=%d\n",
          proc->frame_tx%1024,
          proc->subframe_tx,
          last_dl);
781
782

      // i=0
Bilel's avatar
Bilel committed
783
      nCCE0 = ue->pdcch_vars[proc->subframe_rx & 0x1][eNB_id]->nCCE[last_dl];
784
      n1_pucch0 = get_Np(frame_parms->N_RB_DL,nCCE0,0) + nCCE0+ frame_parms->pucch_config_common.n1PUCCH_AN;
785

786
      harq_ack0 = b[0];
787
788

      if (harq_ack0!=2) {  // DTX
789
790
791
792
        if (frame_parms->frame_type == FDD ) {
          if (SR == 0) {  // last paragraph pg 68 from 36.213 (v8.6), m=0
            b[0]=(M==2) ? 1-harq_ack0 : harq_ack0;
            b[1]=harq_ack0;   // in case we use pucch format 1b (subframes 2,7)
793
          ue->pucch_sel[subframe] = 0;
794
795
796
            return(n1_pucch0);
          } else { // SR and only 0 or 1 ACKs (first 2 entries in Table 7.3-1 of 36.213)
            b[0]=harq_ack0;
797
          return(ue->scheduling_request_config[eNB_id].sr_PUCCH_ResourceIndex);
798
799
800
801
802
803
804
805
806
807
808
809
          }
        } else {
          if (SR == 0) {
            b[0] = harq_ack0;
            b[1] = harq_ack0;
            ue->pucch_sel[subframe] = 0;
            return(n1_pucch0);
          } else {
            b[0] = harq_ack0;
            b[1] = harq_ack0;
            return(ue->scheduling_request_config[eNB_id].sr_PUCCH_ResourceIndex);
          }
810
        }
811
812
813
814
      }


      break;
815

816
817
818
819
820
821
822
    case 3:  // DL:S:UL:UL:UL:DL:DL:DL:DL:DL
      // in this configuration we have M=2 from pg 68 of 36.213 (v8.6)
      // Note: this doesn't allow using subframe 1 for PDSCH transmission!!! (i.e. SF 1 cannot be acked in SF 2)
      // set ACK/NAKs to DTX
      harq_ack1 = 2; // DTX
      harq_ack0 = 2; // DTX
      // This is the offset for a particular subframe (2,3,4) => (0,2,4)
823
      last_dl = (subframe-2)<<1;
824
      // i=0
Bilel's avatar
Bilel committed
825
      nCCE0 = ue->pdcch_vars[proc->subframe_rx & 0x1][eNB_id]->nCCE[5+last_dl];
826
      n1_pucch0 = get_Np(frame_parms->N_RB_DL,nCCE0,0) + nCCE0+ frame_parms->pucch_config_common.n1PUCCH_AN;
827
      // i=1
Bilel's avatar
Bilel committed
828
      nCCE1 = ue->pdcch_vars[proc->subframe_rx & 0x1][eNB_id]->nCCE[(6+last_dl)%10];
829
      n1_pucch1 = get_Np(frame_parms->N_RB_DL,nCCE1,1) + nCCE1 + frame_parms->pucch_config_common.n1PUCCH_AN;
830
831

      // set ACK/NAK to values if not DTX
Gabriel's avatar
Gabriel committed
832
833
      if (ue->dlsch[subframe_DL(&ue->frame_parms,proc->subframe_rx)&0x1][eNB_id][0]->harq_ack[(6+last_dl)%10].send_harq_status>0)  // n-6 // subframe 6 is to be ACK/NAKed
        harq_ack1 = ue->dlsch[subframe_DL(&ue->frame_parms,proc->subframe_rx)&0x1][eNB_id][0]->harq_ack[(6+last_dl)%10].ack;
834

Gabriel's avatar
Gabriel committed
835
836
      if (ue->dlsch[subframe_DL(&ue->frame_parms,proc->subframe_rx)&0x1][eNB_id][0]->harq_ack[5+last_dl].send_harq_status>0)  // n-6 // subframe 5 is to be ACK/NAKed
        harq_ack0 = ue->dlsch[subframe_DL(&ue->frame_parms,proc->subframe_rx)&0x1][eNB_id][0]->harq_ack[5+last_dl].ack;
837

838
839

      if (harq_ack1!=2) { // n-6 // subframe 6,8,0 and maybe 5,7,9 is to be ACK/NAKed
840
841
842
843
844
845
846
847
848

        if ((bundling_flag==bundling)&&(SR == 0)) {  // This is for bundling without SR,
          // n1_pucch index takes value of smallest element in set {0,1}
          // i.e. 0 if harq_ack0 is not DTX, otherwise 1
          b[0] = harq_ack1;

          if (harq_ack0!=2)
            b[0]=b[0]&harq_ack0;

849
          ue->pucch_sel[subframe] = 1;
850
851
852
853
854
855
856
857
858
859
          return(n1_pucch1);

        } else if ((bundling_flag==multiplexing)&&(SR==0)) { // Table 10.1
          if (harq_ack0 == 2)
            harq_ack0 = 0;

          b[1] = harq_ack0;
          b[0] = (harq_ack0!=harq_ack1)?0:1;

          if ((harq_ack0 == 1) && (harq_ack1 == 0)) {
860
            ue->pucch_sel[subframe] = 0;
861
862
            return(n1_pucch0);
          } else {
863
            ue->pucch_sel[subframe] = 1;
864
865
866
867
868
869
870
871
872
            return(n1_pucch1);
          }
        } else if (SR==1) { // SR and 0,1,or 2 ACKS, (first 3 entries in Table 7.3-1 of 36.213)
          // this should be number of ACKs (including
          if (harq_ack0 == 2)
            harq_ack0 = 0;

          b[0]= harq_ack1 | harq_ack0;
          b[1]= harq_ack1 ^ harq_ack0;
873
          return(ue->scheduling_request_config[eNB_id].sr_PUCCH_ResourceIndex);
874
875
876
877
        }
      } else if (harq_ack0!=2) { // n-7  // subframe 5,7,9 only is to be ACK/NAKed
        if ((bundling_flag==bundling)&&(SR == 0)) {  // last paragraph pg 68 from 36.213 (v8.6), m=0
          b[0]=harq_ack0;
878
          ue->pucch_sel[subframe] = 0;
879
880
881
882
          return(n1_pucch0);
        } else if ((bundling_flag==multiplexing)&&(SR==0)) { // Table 10.1 with i=1 set to DTX
          b[0] = harq_ack0;
          b[1] = 1-b[0];
883
          ue->pucch_sel[subframe] = 0;
884
885
886
887
          return(n1_pucch0);
        } else if (SR==1) { // SR and only 0 or 1 ACKs (first 2 entries in Table 7.3-1 of 36.213)
          b[0]=harq_ack0;
          b[1]=b[0];
888
          return(ue->scheduling_request_config[eNB_id].sr_PUCCH_ResourceIndex);
889
        }
890
      }
891

892
893
      break;

894
    }  // switch tdd_config
895
  }
896

Cedric Roux's avatar
Cedric Roux committed
897
  LOG_E(PHY,"[UE%d] : Frame %d phy_procedures_lte.c: get_n1pucch, exit without proper return\n", ue->Mod_id, proc->frame_tx);
898
899
900
901
902
903
  return(-1);
}


#ifdef EMOS
/*
904
  void phy_procedures_emos_UE_TX(uint8_t next_slot,uint8_t eNB_id) {
gauthier's avatar
gauthier committed
905
  uint8_t harq_pid;
906

907
908

  if (next_slot%2==0) {
909
910
911
912
913
914
915
  // get harq_pid from subframe relationship
  harq_pid = subframe2harq_pid(&ue->frame_parms,ue->frame,(next_slot>>1));
  if (harq_pid==255) {
  LOG_E(PHY,"[UE%d] Frame %d : FATAL ERROR: illegal harq_pid, returning\n",
  0,ue->frame);
  return;
  }
916

917
918
919
920
921
922
923
924
925
926
927
928
929
  if (ulsch[eNB_id]->harq_processes[harq_pid]->subframe_scheduling_flag == 1) {
  emos_dump_UE.uci_cnt[next_slot>>1] = 1;
  memcpy(emos_dump_UE.UCI_data[0][next_slot>>1].o,ulsch[eNB_id]->o,MAX_CQI_BITS*sizeof(char));
  emos_dump_UE.UCI_data[0][next_slot>>1].O = ulsch[eNB_id]->O;
  memcpy(emos_dump_UE.UCI_data[0][next_slot>>1].o_RI,ulsch[eNB_id]->o_RI,2*sizeof(char));
  emos_dump_UE.UCI_data[0][next_slot>>1].O_RI = ulsch[eNB_id]->O_RI;
  memcpy(emos_dump_UE.UCI_data[0][next_slot>>1].o_ACK,ulsch[eNB_id]->o_ACK,4*sizeof(char));
  emos_dump_UE.UCI_data[0][next_slot>>1].O_ACK = ulsch[eNB_id]->harq_processes[harq_pid]->O_ACK;
  }
  else {
  emos_dump_UE.uci_cnt[next_slot>>1] = 0;
  }
  }
930
931
932
933
  }
*/
#endif

Bilel's avatar
Bilel committed
934
void ulsch_common_procedures(PHY_VARS_UE *ue, UE_rxtx_proc_t *proc, uint8_t empty_subframe) {
935

936
  int aa;
937
  LTE_DL_FRAME_PARMS *frame_parms=&ue->frame_parms;
938

939
940
941
942
  int nsymb;
  int subframe_tx = proc->subframe_tx;
  int frame_tx = proc->frame_tx;
  int ulsch_start;
943
  int overflow=0;
944
#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR)
945
  int k,l;
946
  int dummy_tx_buffer[frame_parms->samples_per_tti] __attribute__((aligned(16)));
947
948
#endif

949
950
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_UE_TX_ULSCH_COMMON,VCD_FUNCTION_IN);

951
952
953
954
955
  start_meas(&ue->ofdm_mod_stats);
  nsymb = (frame_parms->Ncp == 0) ? 14 : 12;
  
#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR)//this is the EXPRESS MIMO case
  ulsch_start = (ue->rx_offset+subframe_tx*frame_parms->samples_per_tti-
Gabriel's avatar
Gabriel committed
956
957
958
959
960
961
962
963
964
965
966
967
         ue->hw_timing_advance-
         ue->timing_advance-
         ue->N_TA_offset+5);
  //LOG_E(PHY,"ul-signal [subframe: %d, ulsch_start %d]\n",subframe_tx, ulsch_start);

  if(ulsch_start < 0)
      ulsch_start = ulsch_start + (LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*frame_parms->samples_per_tti);

  if (ulsch_start > (LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*frame_parms->samples_per_tti))
      ulsch_start = ulsch_start % (LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*frame_parms->samples_per_tti);

  //LOG_E(PHY,"ul-signal [subframe: %d, ulsch_start %d]\n",subframe_tx, ulsch_start);
968
969
970
#else //this is the normal case
  ulsch_start = (frame_parms->samples_per_tti*subframe_tx)-ue->N_TA_offset; //-ue->timing_advance;
#endif //else EXMIMO
Bilel's avatar
Bilel committed
971

972
//#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR)
Bilel's avatar
Bilel committed
973
974
975
976
977
978
  if (empty_subframe)
  {
//#if 1
      overflow = ulsch_start - 9*frame_parms->samples_per_tti;
      for (aa=0; aa<frame_parms->nb_antennas_tx; aa++) {

979
980
981
982
983
984
985
986
987
          if (overflow > 0)
		 {
			 memset(&ue->common_vars.txdata[aa][ulsch_start],0,4*(frame_parms->samples_per_tti-overflow));
			 memset(&ue->common_vars.txdata[aa][0],0,4*overflow);
		 }
		 else
		 {
			 memset(&ue->common_vars.txdata[aa][ulsch_start],0,4*frame_parms->samples_per_tti);
		 }
Bilel's avatar
Bilel committed
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
      }
/*#else
      overflow = ulsch_start - 9*frame_parms->samples_per_tti;
      for (aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
          for (k=ulsch_start; k<cmin(frame_parms->samples_per_tti*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME,ulsch_start+frame_parms->samples_per_tti); k++) {
              ((short*)ue->common_vars.txdata[aa])[2*k] = 0;
              ((short*)ue->common_vars.txdata[aa])[2*k+1] = 0;
          }

          for (k=0; k<overflow; k++) {
              ((short*)ue->common_vars.txdata[aa])[2*k] = 0;
              ((short*)ue->common_vars.txdata[aa])[2*k+1] = 0;
          }
      }
#endif*/
      return;
  }
1005
//#endif
Bilel's avatar
Bilel committed
1006

1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
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
  if ((frame_tx%100) == 0)
    LOG_D(PHY,"[UE %d] Frame %d, subframe %d: ulsch_start = %d (rxoff %d, HW TA %d, timing advance %d, TA_offset %d\n",
	  ue->Mod_id,frame_tx,subframe_tx,
	  ulsch_start,
	  ue->rx_offset,
	  ue->hw_timing_advance,
	  ue->timing_advance,
	  ue->N_TA_offset);
  
  
  for (aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
    if (frame_parms->Ncp == 1)
      PHY_ofdm_mod(&ue->common_vars.txdataF[aa][subframe_tx*nsymb*frame_parms->ofdm_symbol_size],
#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR)
		   dummy_tx_buffer,
#else
		   &ue->common_vars.txdata[aa][ulsch_start],
#endif
		   frame_parms->ofdm_symbol_size,
		   nsymb,
		   frame_parms->nb_prefix_samples,
		   CYCLIC_PREFIX);
    else
      normal_prefix_mod(&ue->common_vars.txdataF[aa][subframe_tx*nsymb*frame_parms->ofdm_symbol_size],
#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR)
			dummy_tx_buffer,
#else
			&ue->common_vars.txdata[aa][ulsch_start],
#endif
			nsymb,
			&ue->frame_parms);
    
    
#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR)
    apply_7_5_kHz(ue,dummy_tx_buffer,0);
    apply_7_5_kHz(ue,dummy_tx_buffer,1);
#else
    apply_7_5_kHz(ue,&ue->common_vars.txdata[aa][ulsch_start],0);
    apply_7_5_kHz(ue,&ue->common_vars.txdata[aa][ulsch_start],1);
#endif
    
    
#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR)
    overflow = ulsch_start - 9*frame_parms->samples_per_tti;
    
    
    for (k=ulsch_start,l=0; k<cmin(frame_parms->samples_per_tti*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME,ulsch_start+frame_parms->samples_per_tti); k++,l++) {
      ((short*)ue->common_vars.txdata[aa])[2*k] = ((short*)dummy_tx_buffer)[2*l]<<4;
      ((short*)ue->common_vars.txdata[aa])[2*k+1] = ((short*)dummy_tx_buffer)[2*l+1]<<4;
    }
    
    for (k=0; k<overflow; k++,l++) {
      ((short*)ue->common_vars.txdata[aa])[2*k] = ((short*)dummy_tx_buffer)[2*l]<<4;
      ((short*)ue->common_vars.txdata[aa])[2*k+1] = ((short*)dummy_tx_buffer)[2*l+1]<<4;
    }
#if defined(EXMIMO)
    // handle switch before 1st TX subframe, guarantee that the slot prior to transmission is switch on
    for (k=ulsch_start - (frame_parms->samples_per_tti>>1) ; k<ulsch_start ; k++) {
      if (k<0)
	ue->common_vars.txdata[aa][k+frame_parms->samples_per_tti*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME] &= 0xFFFEFFFE;
      else if (k>(frame_parms->samples_per_tti*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME))
	ue->common_vars.txdata[aa][k-frame_parms->samples_per_tti*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME] &= 0xFFFEFFFE;
      else
	ue->common_vars.txdata[aa][k] &= 0xFFFEFFFE;
    }
1072
#endif