nr_parms.c 10 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
/*
 * 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 1.1  (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
 */

22
#include "phy_init.h"
23
#include "common/utils/LOG/log.h"
24

25 26
/// Subcarrier spacings in Hz indexed by numerology index
uint32_t nr_subcarrier_spacing[MAX_NUM_SUBCARRIER_SPACING] = {15e3, 30e3, 60e3, 120e3, 240e3};
27
uint16_t nr_slots_per_subframe[MAX_NUM_SUBCARRIER_SPACING] = {1, 2, 4, 16, 32};
28

Raymond Knopp's avatar
Raymond Knopp committed
29

30 31 32 33 34 35 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
int nr_get_ssb_start_symbol(NR_DL_FRAME_PARMS *fp, uint8_t i_ssb, uint8_t half_frame_index)
{

  int mu = fp->numerology_index;
  int symbol = 0;
  uint8_t n, n_temp;
  nr_ssb_type_e type = fp->ssb_type;
  int case_AC[2] = {2,8};
  int case_BD[4] = {4,8,16,20};
  int case_E[8] = {8, 12, 16, 20, 32, 36, 40, 44};

  switch(mu) {

	case NR_MU_0: // case A
	    n = i_ssb >> 1;
	    symbol = case_AC[i_ssb % 2] + 14*n;
	break;

	case NR_MU_1: 
	    if (type == 1){ // case B
		n = i_ssb >> 2;
	    	symbol = case_BD[i_ssb % 4] + 28*n;
	    }
	    if (type == 2){ // case C
		n = i_ssb >> 1;
		symbol = case_AC[i_ssb % 2] + 14*n;
	    }
	 break;

	 case NR_MU_3: // case D
	    n_temp = i_ssb >> 2; 
	    n = n_temp + (n_temp >> 2);
	    symbol = case_BD[i_ssb % 4] + 28*n;
	 break;

	 case NR_MU_4:  // case E
	    n_temp = i_ssb >> 3; 
	    n = n_temp + (n_temp >> 2);
	    symbol = case_E[i_ssb % 8] + 56*n;
	 break;


	 default:
	      AssertFatal(0==1, "Invalid numerology index %d for the synchronization block\n", mu);
  }

  if (half_frame_index)
    symbol += (5 * fp->symbols_per_slot * fp->slots_per_subframe);

  return symbol;
}


83
int nr_init_frame_parms0(NR_DL_FRAME_PARMS *fp,
Raymond Knopp's avatar
Raymond Knopp committed
84
			 int mu,
85 86
			 int Ncp,
			 int N_RB_DL)
Raymond Knopp's avatar
Raymond Knopp committed
87

88 89
{

hongzhi wang's avatar
hongzhi wang committed
90
#if DISABLE_LOG_X
91
  printf("Initializing frame parms for mu %d, N_RB %d, Ncp %d\n",mu, N_RB_DL, Ncp);
hongzhi wang's avatar
hongzhi wang committed
92
#else
93
  LOG_I(PHY,"Initializing frame parms for mu %d, N_RB %d, Ncp %d\n",mu, N_RB_DL, Ncp);
hongzhi wang's avatar
hongzhi wang committed
94 95
#endif

Guy De Souza's avatar
Guy De Souza committed
96
  if (Ncp == NFAPI_CP_EXTENDED)
hongzhi wang's avatar
hongzhi wang committed
97 98
    AssertFatal(mu == NR_MU_2,"Invalid cyclic prefix %d for numerology index %d\n", Ncp, mu);

99 100 101
  fp->numerology_index = mu;
  fp->Ncp = Ncp;
  fp->N_RB_DL = N_RB_DL;
102

hongzhi wang's avatar
hongzhi wang committed
103 104 105
  switch(mu) {

    case NR_MU_0: //15kHz scs
Raymond Knopp's avatar
Raymond Knopp committed
106 107
      fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_0];
      fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_0];
108
      fp->ssb_type = nr_ssb_type_A;
hongzhi wang's avatar
hongzhi wang committed
109 110 111
      break;

    case NR_MU_1: //30kHz scs
Raymond Knopp's avatar
Raymond Knopp committed
112 113
      fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_1];
      fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_1];
hongzhi wang's avatar
hongzhi wang committed
114

115 116 117 118 119 120 121 122 123 124
      // selection of SS block pattern according to TS 38101-1 Table 5.4.3.3-1 for SCS 30kHz
      if (fp->eutra_band == 5 || fp->eutra_band == 66) 
	      fp->ssb_type = nr_ssb_type_B;
      else{  
      	if (fp->eutra_band == 41 || ( fp->eutra_band > 76 && fp->eutra_band < 80) )
		fp->ssb_type = nr_ssb_type_C;
	else
		AssertFatal(1==0,"NR Operating Band n%d not available for SS block SCS with mu=%d\n", fp->eutra_band, mu);
      }

125
      switch(N_RB_DL){
hongzhi wang's avatar
hongzhi wang committed
126 127 128 129 130 131 132 133
        case 11:
        case 24:
        case 38:
        case 78:
        case 51:
        case 65:

        case 106: //40 MHz
Raymond Knopp's avatar
Raymond Knopp committed
134 135 136 137 138
          if (fp->threequarter_fs) {
            fp->ofdm_symbol_size = 1536;
            fp->first_carrier_offset = 900; //1536 - 636
            fp->nb_prefix_samples0 = 132;
            fp->nb_prefix_samples = 108;
hongzhi wang's avatar
hongzhi wang committed
139 140
          }
          else {
Raymond Knopp's avatar
Raymond Knopp committed
141 142 143 144
            fp->ofdm_symbol_size = 2048;
            fp->first_carrier_offset = 1412; //2048 - 636
            fp->nb_prefix_samples0 = 176;
            fp->nb_prefix_samples = 144;
hongzhi wang's avatar
hongzhi wang committed
145 146 147 148 149 150 151 152
          }
          break;

        case 133:
        case 162:
        case 189:

        case 217: //80 MHz
Raymond Knopp's avatar
Raymond Knopp committed
153 154 155 156 157
          if (fp->threequarter_fs) {
            fp->ofdm_symbol_size = 3072;
            fp->first_carrier_offset = 1770; //3072 - 1302
            fp->nb_prefix_samples0 = 264;
            fp->nb_prefix_samples = 216;
hongzhi wang's avatar
hongzhi wang committed
158
          }
Raymond Knopp's avatar
Raymond Knopp committed
159
	  else {
Raymond Knopp's avatar
Raymond Knopp committed
160 161 162 163
	    fp->ofdm_symbol_size = 4096;
	    fp->first_carrier_offset = 2794; //4096 - 1302
	    fp->nb_prefix_samples0 = 352;
	    fp->nb_prefix_samples = 288;
Raymond Knopp's avatar
Raymond Knopp committed
164
	  }
hongzhi wang's avatar
hongzhi wang committed
165 166 167
          break;

        case 245:
168
	  AssertFatal(fp->threequarter_fs==0,"3/4 sampling impossible for N_RB %d and MU %d\n",N_RB_DL,mu); 
Raymond Knopp's avatar
Raymond Knopp committed
169 170 171 172
	  fp->ofdm_symbol_size = 4096;
	  fp->first_carrier_offset = 2626; //4096 - 1478
	  fp->nb_prefix_samples0 = 352;
	  fp->nb_prefix_samples = 288;
Raymond Knopp's avatar
Raymond Knopp committed
173
	  break;
hongzhi wang's avatar
hongzhi wang committed
174
        case 273:
175
	  AssertFatal(fp->threequarter_fs==0,"3/4 sampling impossible for N_RB %d and MU %d\n",N_RB_DL,mu); 
Raymond Knopp's avatar
Raymond Knopp committed
176 177 178 179
	  fp->ofdm_symbol_size = 4096;
	  fp->first_carrier_offset = 2458; //4096 - 1638
	  fp->nb_prefix_samples0 = 352;
	  fp->nb_prefix_samples = 288;
Raymond Knopp's avatar
Raymond Knopp committed
180
	  break;
hongzhi wang's avatar
hongzhi wang committed
181
      default:
182
        AssertFatal(1==0,"Number of resource blocks %d undefined for mu %d, frame parms = %p\n", N_RB_DL, mu, fp);
hongzhi wang's avatar
hongzhi wang committed
183 184 185 186
      }
      break;

    case NR_MU_2: //60kHz scs
Raymond Knopp's avatar
Raymond Knopp committed
187 188
      fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_2];
      fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_2];
hongzhi wang's avatar
hongzhi wang committed
189

190
      switch(N_RB_DL){ //FR1 bands only
hongzhi wang's avatar
hongzhi wang committed
191 192 193 194 195 196 197 198 199 200 201 202 203
        case 11:
        case 18:
        case 38:
        case 24:
        case 31:
        case 51:
        case 65:
        case 79:
        case 93:
        case 107:
        case 121:
        case 135:
      default:
204
        AssertFatal(1==0,"Number of resource blocks %d undefined for mu %d, frame parms = %p\n", N_RB_DL, mu, fp);
hongzhi wang's avatar
hongzhi wang committed
205 206 207 208
      }
      break;

    case NR_MU_3:
Raymond Knopp's avatar
Raymond Knopp committed
209 210
      fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_3];
      fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_3];
211
      fp->ssb_type = nr_ssb_type_D;
hongzhi wang's avatar
hongzhi wang committed
212 213 214
      break;

    case NR_MU_4:
Raymond Knopp's avatar
Raymond Knopp committed
215 216
      fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_4];
      fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_4];
217
      fp->ssb_type = nr_ssb_type_E;
hongzhi wang's avatar
hongzhi wang committed
218 219 220 221 222 223
      break;

  default:
    AssertFatal(1==0,"Invalid numerology index %d", mu);
  }

Raymond Knopp's avatar
Raymond Knopp committed
224
  fp->slots_per_frame = 10* fp->slots_per_subframe;
225 226 227

  fp->nb_antenna_ports_eNB = 1; // default value until overwritten by RRCConnectionReconfiguration

Raymond Knopp's avatar
Raymond Knopp committed
228 229 230
  fp->symbols_per_slot = ((Ncp == NORMAL)? 14 : 12); // to redefine for different slot formats
  fp->samples_per_subframe_wCP = fp->ofdm_symbol_size * fp->symbols_per_slot * fp->slots_per_subframe;
  fp->samples_per_frame_wCP = 10 * fp->samples_per_subframe_wCP;
231 232
  fp->samples_per_slot_wCP = fp->symbols_per_slot*fp->ofdm_symbol_size; 
  fp->samples_per_slot = fp->nb_prefix_samples0 + ((fp->symbols_per_slot-1)*fp->nb_prefix_samples) + (fp->symbols_per_slot*fp->ofdm_symbol_size); 
Raymond Knopp's avatar
Raymond Knopp committed
233 234 235 236
  fp->samples_per_subframe = (fp->samples_per_subframe_wCP + (fp->nb_prefix_samples0 * fp->slots_per_subframe) +
                                      (fp->nb_prefix_samples * fp->slots_per_subframe * (fp->symbols_per_slot - 1)));
  fp->samples_per_frame = 10 * fp->samples_per_subframe;
  fp->freq_range = (fp->dl_CarrierFreq < 6e9)? nr_FR1 : nr_FR2;
hongzhi wang's avatar
hongzhi wang committed
237

238 239 240 241 242 243 244 245 246 247
  // definition of Lmax according to ts 38.213 section 4.1
  if (fp->dl_CarrierFreq < 6e9){
	if(fp->frame_type && (fp->ssb_type==2))
		fp->Lmax = (fp->dl_CarrierFreq < 2.4e9)? 4 : 8;
	else
		fp->Lmax = (fp->dl_CarrierFreq < 3e9)? 4 : 8;
  }  
  else
    fp->Lmax = 64;

Guy De Souza's avatar
Guy De Souza committed
248
  // Initial bandwidth part configuration -- full carrier bandwidth
Raymond Knopp's avatar
Raymond Knopp committed
249 250 251 252
  fp->initial_bwp_dl.bwp_id = 0;
  fp->initial_bwp_dl.scs = fp->subcarrier_spacing;
  fp->initial_bwp_dl.location = 0;
  fp->initial_bwp_dl.N_RB = fp->N_RB_DL;
253
  fp->initial_bwp_dl.cyclic_prefix = fp->Ncp;
Raymond Knopp's avatar
Raymond Knopp committed
254
  fp->initial_bwp_dl.ofdm_symbol_size = fp->ofdm_symbol_size;
Guy De Souza's avatar
Guy De Souza committed
255

hongzhi wang's avatar
hongzhi wang committed
256 257 258
  return 0;
}

Raymond Knopp's avatar
Raymond Knopp committed
259
int nr_init_frame_parms(nfapi_nr_config_request_t* config,
yilmazt's avatar
yilmazt committed
260 261
                        NR_DL_FRAME_PARMS *fp)
{
262

263 264
  fp->eutra_band = config->nfapi_config.rf_bands.rf_band[0];
  fp->frame_type = !(config->subframe_config.duplex_mode.value);
265
  fp->L_ssb = config->sch_config.ssb_scg_position_in_burst.value;
266
  return nr_init_frame_parms0(fp,
267 268 269
			      config->subframe_config.numerology_index_mu.value,
			      config->subframe_config.dl_cyclic_prefix_type.value,
			      config->rf_config.dl_carrier_bandwidth.value);
Raymond Knopp's avatar
Raymond Knopp committed
270
}
hongzhi wang's avatar
hongzhi wang committed
271

Raymond Knopp's avatar
Raymond Knopp committed
272
int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *fp,
Raymond Knopp's avatar
Raymond Knopp committed
273
			   int mu, 
Raymond Knopp's avatar
Raymond Knopp committed
274
			   int Ncp,
275
			   int N_RB_DL,
Raymond Knopp's avatar
Raymond Knopp committed
276 277
			   int n_ssb_crb,
			   int ssb_subcarrier_offset) 
Raymond Knopp's avatar
Raymond Knopp committed
278
{
279
  /*n_ssb_crb and ssb_subcarrier_offset are given in 15kHz SCS*/
280
  nr_init_frame_parms0(fp,mu,Ncp,N_RB_DL);
281
  fp->ssb_start_subcarrier = (12 * n_ssb_crb + ssb_subcarrier_offset)/(1<<mu);
282 283 284
  return 0;
}

Raymond Knopp's avatar
Raymond Knopp committed
285
void nr_dump_frame_parms(NR_DL_FRAME_PARMS *fp)
286
{
Raymond Knopp's avatar
Raymond Knopp committed
287 288 289 290 291 292 293 294 295 296 297 298 299 300 301
  LOG_I(PHY,"fp->scs=%d\n",fp->subcarrier_spacing);
  LOG_I(PHY,"fp->ofdm_symbol_size=%d\n",fp->ofdm_symbol_size);
  LOG_I(PHY,"fp->nb_prefix_samples0=%d\n",fp->nb_prefix_samples0);
  LOG_I(PHY,"fp->nb_prefix_samples=%d\n",fp->nb_prefix_samples);
  LOG_I(PHY,"fp->slots_per_subframe=%d\n",fp->slots_per_subframe);
  LOG_I(PHY,"fp->samples_per_subframe_wCP=%d\n",fp->samples_per_subframe_wCP);
  LOG_I(PHY,"fp->samples_per_frame_wCP=%d\n",fp->samples_per_frame_wCP);
  LOG_I(PHY,"fp->samples_per_subframe=%d\n",fp->samples_per_subframe);
  LOG_I(PHY,"fp->samples_per_frame=%d\n",fp->samples_per_frame);
  LOG_I(PHY,"fp->initial_bwp_dl.bwp_id=%d\n",fp->initial_bwp_dl.bwp_id);
  LOG_I(PHY,"fp->initial_bwp_dl.scs=%d\n",fp->initial_bwp_dl.scs);
  LOG_I(PHY,"fp->initial_bwp_dl.N_RB=%d\n",fp->initial_bwp_dl.N_RB);
  LOG_I(PHY,"fp->initial_bwp_dl.cyclic_prefix=%d\n",fp->initial_bwp_dl.cyclic_prefix);
  LOG_I(PHY,"fp->initial_bwp_dl.location=%d\n",fp->initial_bwp_dl.location);
  LOG_I(PHY,"fp->initial_bwp_dl.ofdm_symbol_size=%d\n",fp->initial_bwp_dl.ofdm_symbol_size);
302
}
303 304 305