eNB_scheduler_bch.c 5.91 KB
Newer Older
1
/*******************************************************************************
nikaeinn's avatar
nikaeinn committed
2
3
    OpenAirInterface
    Copyright(c) 1999 - 2014 Eurecom
4

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


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

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

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

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

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

/*! \file eNB_scheduler_bch.c
 * \brief procedures related to eNB for the BCH transport channel
32
 * \author  Navid Nikaein and Raymond Knopp
nikaeinn's avatar
nikaeinn committed
33
 * \date 2010 - 2014
34
 * \email: navid.nikaein@eurecom.fr
nikaeinn's avatar
nikaeinn committed
35
 * \version 1.0
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
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
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
183
184
185
186
187
188
189
 * @ingroup _mac

 */

#include "assertions.h"
#include "PHY/defs.h"
#include "PHY/extern.h"

#include "SCHED/defs.h"
#include "SCHED/extern.h"

#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/proto.h"
#include "LAYER2/MAC/extern.h"
#include "UTIL/LOG/log.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "ARCH/CBMIMO1/DEVICE_DRIVER/extern.h"
#include "ARCH/CBMIMO1/DEVICE_DRIVER/defs.h"
#include "ARCH/CBMIMO1/DEVICE_DRIVER/from_grlib_softregs.h"

#include "RRC/LITE/extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"

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

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

#define ENABLE_MAC_PAYLOAD_DEBUG
#define DEBUG_eNB_SCHEDULER 1


void schedule_SI(module_id_t module_idP,frame_t frameP, unsigned char *nprb,unsigned int *nCCE) {

  start_meas(&eNB_mac_inst[module_idP].schedule_si);

  unsigned char bcch_sdu_length;
  int mcs = -1;
  void *BCCH_alloc_pdu=(void*)&eNB_mac_inst[module_idP].BCCH_alloc_pdu;

  bcch_sdu_length = mac_rrc_data_req(module_idP,
      frameP,
      BCCH,1,
      &eNB_mac_inst[module_idP].BCCH_pdu.payload[0],
      1,
      module_idP,
      0); // not used in this case
  if (bcch_sdu_length > 0) {
      LOG_D(MAC,"[eNB %d] Frame %d : BCCH->DLSCH, Received %d bytes \n",module_idP,frameP,bcch_sdu_length);


      if (bcch_sdu_length <= (mac_xface->get_TBS_DL(0,3)))
        mcs=0;
      else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(1,3)))
        mcs=1;
      else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(2,3)))
        mcs=2;
      else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(3,3)))
        mcs=3;
      else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(4,3)))
        mcs=4;
      else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(5,3)))
        mcs=5;
      else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(6,3)))
        mcs=6;
      else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(7,3)))
        mcs=7;
      else if (bcch_sdu_length <= (mac_xface->get_TBS_DL(8,3)))
        mcs=8;

      if (mac_xface->lte_frame_parms->frame_type == TDD) {
          switch (mac_xface->lte_frame_parms->N_RB_DL) {
          case 6:
            ((DCI1A_1_5MHz_TDD_1_6_t*)BCCH_alloc_pdu)->mcs = mcs;
            break;
          case 25:
            ((DCI1A_5MHz_TDD_1_6_t*)BCCH_alloc_pdu)->mcs = mcs;
            break;
          case 50:
            ((DCI1A_10MHz_TDD_1_6_t*)BCCH_alloc_pdu)->mcs = mcs;
            break;
          case 100:
            ((DCI1A_20MHz_TDD_1_6_t*)BCCH_alloc_pdu)->mcs = mcs;
            break;

          }
      }
      else {
          switch (mac_xface->lte_frame_parms->N_RB_DL) {
          case 6:
            ((DCI1A_1_5MHz_FDD_t*)BCCH_alloc_pdu)->mcs = mcs;
            break;
          case 25:
            ((DCI1A_5MHz_FDD_t*)BCCH_alloc_pdu)->mcs = mcs;
            break;
          case 50:
            ((DCI1A_10MHz_FDD_t*)BCCH_alloc_pdu)->mcs = mcs;
            break;
          case 100:
            ((DCI1A_20MHz_FDD_t*)BCCH_alloc_pdu)->mcs = mcs;
            break;

          }
      }

#if defined(USER_MODE) && defined(OAI_EMU)
      if (oai_emulation.info.opt_enabled) {
        trace_pdu(1,
                  &eNB_mac_inst[module_idP].BCCH_pdu.payload[0],
                  bcch_sdu_length,
                  0xffff,
                  4,
                  0xffff,
                  eNB_mac_inst[module_idP].subframe,
                  0,
                  0);
      }
      LOG_D(OPT,"[eNB %d][BCH] Frame %d trace pdu for rnti %x with size %d\n",
                 module_idP, frameP, 0xffff, bcch_sdu_length);
#endif

      if (mac_xface->lte_frame_parms->frame_type == TDD) {
          LOG_D(MAC,"[eNB] Frame %d : Scheduling BCCH->DLSCH (TDD) for SI %d bytes (mcs %d, rb 3, TBS %d)\n",
              frameP,
              bcch_sdu_length,
              mcs,
              mac_xface->get_TBS_DL(mcs,3));
      }
      else {
          LOG_D(MAC,"[eNB] Frame %d : Scheduling BCCH->DLSCH (FDD) for SI %d bytes (mcs %d, rb 3, TBS %d)\n",
              frameP,
              bcch_sdu_length,
              mcs,
              mac_xface->get_TBS_DL(mcs,3));
      }
      eNB_mac_inst[module_idP].bcch_active=1;
      *nprb=3;
      *nCCE=4;
  }
  else {
    eNB_mac_inst[module_idP].bcch_active=0;
    *nprb=0;
    *nCCE=0;
    //LOG_D(MAC,"[eNB %d] Frame %d : BCCH not active \n",Mod_id,frame);
  }
  // this might be misleading when bcch is inactive
  stop_meas(&eNB_mac_inst[module_idP].schedule_si);
  return;
}