lte_init_ru.c 8.39 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
23
24
25
#include "phy_init.h"
#include "SCHED/sched_eNB.h"
#include "PHY/phy_extern.h"
#include "SIMULATION/TOOLS/sim.h"
26
27
28
29
#include "LTE_RadioResourceConfigCommonSIB.h"
#include "LTE_RadioResourceConfigDedicated.h"
#include "LTE_TDD-Config.h"
#include "LTE_MBSFN-SubframeConfigList.h"
30
#include "common/utils/LOG/vcd_signal_dumper.h"
31
32
33
#include "assertions.h"
#include <math.h>

34
void init_7_5KHz(void);
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
int phy_init_RU(RU_t *ru) {

  LTE_DL_FRAME_PARMS *fp = &ru->frame_parms;
  int i,j;
  int p;
  int re;

  LOG_I(PHY,"Initializing RU signal buffers (if_south %s) nb_tx %d\n",ru_if_types[ru->if_south],ru->nb_tx);

  if (ru->if_south <= REMOTE_IF5) { // this means REMOTE_IF5 or LOCAL_RF, so allocate memory for time-domain signals 
    // Time-domain signals
    ru->common.txdata        = (int32_t**)malloc16(ru->nb_tx*sizeof(int32_t*));
    ru->common.rxdata        = (int32_t**)malloc16(ru->nb_rx*sizeof(int32_t*) );


    for (i=0; i<ru->nb_tx; i++) {
      // Allocate 10 subframes of I/Q TX signal data (time) if not
      ru->common.txdata[i]  = (int32_t*)malloc16_clear( fp->samples_per_tti*10*sizeof(int32_t) );

      LOG_I(PHY,"[INIT] common.txdata[%d] = %p (%lu bytes)\n",i,ru->common.txdata[i],
	     fp->samples_per_tti*10*sizeof(int32_t));

    }
    for (i=0;i<ru->nb_rx;i++) {
      ru->common.rxdata[i] = (int32_t*)malloc16_clear( fp->samples_per_tti*10*sizeof(int32_t) );
    }
  } // IF5 or local RF
  else {
64
    //    LOG_I(PHY,"No rxdata/txdata for RU\n");
65
66
67
68
69
    ru->common.txdata        = (int32_t**)NULL;
    ru->common.rxdata        = (int32_t**)NULL;

  }
  if (ru->function != NGFI_RRU_IF5) { // we need to do RX/TX RU processing
70
    init_dfts();
71
    init_7_5KHz();
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
    LOG_I(PHY,"nb_tx %d\n",ru->nb_tx);
    ru->common.rxdata_7_5kHz = (int32_t**)malloc16(ru->nb_rx*sizeof(int32_t*) );
    for (i=0;i<ru->nb_rx;i++) {
      ru->common.rxdata_7_5kHz[i] = (int32_t*)malloc16_clear( 2*fp->samples_per_tti*2*sizeof(int32_t) );
      LOG_I(PHY,"rxdata_7_5kHz[%d] %p for RU %d\n",i,ru->common.rxdata_7_5kHz[i],ru->idx);
    }
  

    // allocate IFFT input buffers (TX)
    ru->common.txdataF_BF = (int32_t **)malloc16(ru->nb_tx*sizeof(int32_t*));
    LOG_I(PHY,"[INIT] common.txdata_BF= %p (%lu bytes)\n",ru->common.txdataF_BF,
	  ru->nb_tx*sizeof(int32_t*));
    for (i=0; i<ru->nb_tx; i++) {
      ru->common.txdataF_BF[i] = (int32_t*)malloc16_clear(fp->symbols_per_tti*fp->ofdm_symbol_size*sizeof(int32_t) );
      LOG_I(PHY,"txdataF_BF[%d] %p for RU %d\n",i,ru->common.txdataF_BF[i],ru->idx);
    }
    // allocate FFT output buffers (RX)
    ru->common.rxdataF     = (int32_t**)malloc16(ru->nb_rx*sizeof(int32_t*) );
    for (i=0; i<ru->nb_rx; i++) {    
      // allocate 2 subframes of I/Q signal data (frequency)
      ru->common.rxdataF[i] = (int32_t*)malloc16_clear(sizeof(int32_t)*(2*fp->ofdm_symbol_size*fp->symbols_per_tti) ); 
      LOG_I(PHY,"rxdataF[%d] %p for RU %d\n",i,ru->common.rxdataF[i],ru->idx);
    }

    /* number of elements of an array X is computed as sizeof(X) / sizeof(X[0]) */
97
98
    //    AssertFatal(ru->nb_rx <= sizeof(ru->prach_rxsigF) / sizeof(ru->prach_rxsigF[0]),
    //		"nb_antennas_rx too large");
99
100
101
102
103
104
    ru->prach_rxsigF = (int16_t**)malloc(ru->nb_rx * sizeof(int16_t*));
    for (j=0;j<4;j++) ru->prach_rxsigF_br[j] = (int16_t**)malloc(ru->nb_rx * sizeof(int16_t*));

    for (i=0; i<ru->nb_rx; i++) {
      ru->prach_rxsigF[i] = (int16_t*)malloc16_clear( fp->ofdm_symbol_size*12*2*sizeof(int16_t) );
      LOG_D(PHY,"[INIT] prach_vars->rxsigF[%d] = %p\n",i,ru->prach_rxsigF[i]);
105
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
106
107
108
109
110
111
112
113
114
115
      for (j=0;j<4;j++) {
	ru->prach_rxsigF_br[j][i] = (int16_t*)malloc16_clear( fp->ofdm_symbol_size*12*2*sizeof(int16_t) );
	LOG_D(PHY,"[INIT] prach_vars_br->rxsigF[%d] = %p\n",i,ru->prach_rxsigF_br[j][i]);
      }
#endif
    }
    
    AssertFatal(RC.nb_L1_inst <= NUMBER_OF_eNB_MAX,"eNB instances %d > %d\n",
		RC.nb_L1_inst,NUMBER_OF_eNB_MAX);

116
    LOG_D(PHY,"[INIT] %s() RC.nb_L1_inst:%d \n", __FUNCTION__, RC.nb_L1_inst);
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153

    for (i=0; i<RC.nb_L1_inst; i++) {
      for (p=0;p<15;p++) {
        LOG_D(PHY,"[INIT] %s() nb_antenna_ports_eNB:%d \n", __FUNCTION__, ru->eNB_list[i]->frame_parms.nb_antenna_ports_eNB);
	if (p<ru->eNB_list[i]->frame_parms.nb_antenna_ports_eNB || p==5) {
          LOG_D(PHY,"[INIT] %s() DO BEAM WEIGHTS nb_antenna_ports_eNB:%d nb_tx:%d\n", __FUNCTION__, ru->eNB_list[i]->frame_parms.nb_antenna_ports_eNB, ru->nb_tx);
	  ru->beam_weights[i][p] = (int32_t **)malloc16_clear(ru->nb_tx*sizeof(int32_t*));
	  for (j=0; j<ru->nb_tx; j++) {
	    ru->beam_weights[i][p][j] = (int32_t *)malloc16_clear(fp->ofdm_symbol_size*sizeof(int32_t));
	    // antenna ports 0-3 are mapped on antennas 0-3
	    // antenna port 4 is mapped on antenna 0
	    // antenna ports 5-14 are mapped on all antennas 
	    if (((p<4) && (p==j)) || ((p==4) && (j==0))) {
	      for (re=0; re<fp->ofdm_symbol_size; re++) 
              {
		ru->beam_weights[i][p][j][re] = 0x00007fff; 

                //LOG_D(PHY,"[INIT] lte_common_vars->beam_weights[%d][%d][%d][%d] = %d\n", i,p,j,re,ru->beam_weights[i][p][j][re]);
              }
	    }
	    else if (p>4) {
	      for (re=0; re<fp->ofdm_symbol_size; re++) 
              {
		ru->beam_weights[i][p][j][re] = 0x00007fff/ru->nb_tx; 
                //LOG_D(PHY,"[INIT] lte_common_vars->beam_weights[%d][%d][%d][%d] = %d\n", i,p,j,re,ru->beam_weights[i][p][j][re]);
              }
	    }  
	    //LOG_D(PHY,"[INIT] lte_common_vars->beam_weights[%d][%d] = %p (%lu bytes)\n", i,j,ru->beam_weights[i][p][j], fp->ofdm_symbol_size*sizeof(int32_t)); 
	  } // for (j=0
	} // if (p<ru
      } // for p
    } //for i
  } // !=IF5
  ru->common.sync_corr = (uint32_t*)malloc16_clear( LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*sizeof(uint32_t)*fp->samples_per_tti );

  return(0);
}
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182

void phy_free_RU(RU_t *ru)
{
  int i,j;
  int p;

  LOG_I(PHY, "Feeing RU signal buffers (if_south %s) nb_tx %d\n", ru_if_types[ru->if_south], ru->nb_tx);

  if (ru->if_south <= REMOTE_IF5) { // this means REMOTE_IF5 or LOCAL_RF, so free memory for time-domain signals
    for (i = 0; i < ru->nb_tx; i++) free_and_zero(ru->common.txdata[i]);
    for (i = 0; i < ru->nb_rx; i++) free_and_zero(ru->common.rxdata[i]);
    free_and_zero(ru->common.txdata);
    free_and_zero(ru->common.rxdata);
  } // else: IF5 or local RF -> nothing to free()

  if (ru->function != NGFI_RRU_IF5) { // we need to do RX/TX RU processing
    for (i = 0; i < ru->nb_rx; i++) free_and_zero(ru->common.rxdata_7_5kHz[i]);
    free_and_zero(ru->common.rxdata_7_5kHz);

    // free IFFT input buffers (TX)
    for (i = 0; i < ru->nb_tx; i++) free_and_zero(ru->common.txdataF_BF[i]);
    free_and_zero(ru->common.txdataF_BF);

    // free FFT output buffers (RX)
    for (i = 0; i < ru->nb_rx; i++) free_and_zero(ru->common.rxdataF[i]);
    free_and_zero(ru->common.rxdataF);

    for (i = 0; i < ru->nb_rx; i++) {
      free_and_zero(ru->prach_rxsigF[i]);
183
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
      for (j = 0; j < 4; j++) free_and_zero(ru->prach_rxsigF_br[j][i]);
#endif
    }
    for (j = 0; j < 4; j++) free_and_zero(ru->prach_rxsigF_br[j]);
    free_and_zero(ru->prach_rxsigF);
    /* ru->prach_rxsigF_br is not allocated -> don't free */

    for (i = 0; i < RC.nb_L1_inst; i++) {
      for (p = 0; p < 15; p++) {
	if (p < ru->eNB_list[i]->frame_parms.nb_antenna_ports_eNB || p == 5) {
	  for (j=0; j<ru->nb_tx; j++) free_and_zero(ru->beam_weights[i][p][j]);
	  free_and_zero(ru->beam_weights[i][p]);
	}
      }
    }
  }
  free_and_zero(ru->common.sync_corr);
}