eNB_scheduler_RA.c 71.3 KB
Newer Older
1
2
3
4
5
/*
 * 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
Cedric Roux's avatar
Cedric Roux committed
6
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 * 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
 */
knopp's avatar
   
knopp committed
21

22
/*! \file eNB_scheduler_RA.c
23
 * \brief primitives used for random access
knopp's avatar
   
knopp committed
24
25
26
27
28
29
30
31
 * \author  Navid Nikaein and Raymond Knopp
 * \date 2010 - 2014
 * \email: navid.nikaein@eurecom.fr
 * \version 1.0
 * @ingroup _mac

 */

32
33
34
/* indented with: indent -kr eNB_scheduler_RA.c */


knopp's avatar
   
knopp committed
35
#include "assertions.h"
36
#include "platform_types.h"
knopp's avatar
   
knopp committed
37
38
#include "PHY/defs.h"
#include "PHY/extern.h"
gauthier's avatar
gauthier committed
39
#include "msc.h"
knopp's avatar
   
knopp committed
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

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

#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/extern.h"

#include "LAYER2/MAC/proto.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 "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)
61
#include "intertask_interface.h"
knopp's avatar
   
knopp committed
62
63
#endif

64
#include "SIMULATION/TOOLS/defs.h"	// for taus
knopp's avatar
   
knopp committed
65

Cedric Roux's avatar
Cedric Roux committed
66
#include "T.h"
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
#ifdef UE_EXPANSION
enum SCH_UE_PRIORITY {
  SCH_PRIORITY_NONE,
  SCH_DL_SI,
  SCH_DL_PAGING,
  SCH_DL_MSG2,
  SCH_DL_MSG4,
  SCH_UL_PRACH,
  SCH_UL_MSG3,
  SCH_DL_RETRANS,
  SCH_UL_RETRANS,
  SCH_DL_FIRST,
  SCH_UL_FIRST,
  SCH_UL_INACTIVE
};
#endif
83
84
85
86
87
extern uint8_t nfapi_mode;
extern int oai_nfapi_hi_dci0_req(nfapi_hi_dci0_request_t *hi_dci0_req);

void add_subframe(uint16_t *frameP, uint16_t *subframeP, int offset)
{
Cedric Roux's avatar
Cedric Roux committed
88
    *frameP    = (*frameP + ((*subframeP + offset) / 10)) % 1024;
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

    *subframeP = ((*subframeP + offset) % 10);
}

uint16_t sfnsf_add_subframe(uint16_t frameP, uint16_t subframeP, int offset)
{
  add_subframe(&frameP, &subframeP, offset);
  return frameP<<4|subframeP;
}

void subtract_subframe(uint16_t *frameP, uint16_t *subframeP, int offset)
{
  if (*subframeP < offset)
  {
    *frameP = (*frameP+1024-1)%1024;
  }
  *subframeP = (*subframeP+10-offset)%10;
}

uint16_t sfnsf_subtract_subframe(uint16_t frameP, uint16_t subframeP, int offset)
{
  subtract_subframe(&frameP, &subframeP, offset);
  return frameP<<4|subframeP;
}

114
115
116
117
118
119
120
121
122
void
add_msg3(module_id_t module_idP, int CC_id, RA_t * ra, frame_t frameP,
	 sub_frame_t subframeP)
{
    eNB_MAC_INST *mac = RC.mac[module_idP];
    COMMON_channels_t *cc = &mac->common_channels[CC_id];
    uint8_t j;
    nfapi_ul_config_request_t *ul_req;
    nfapi_ul_config_request_body_t *ul_req_body;
123
    nfapi_ul_config_request_pdu_t *ul_config_pdu;
jftt_wangshanshan's avatar
jftt_wangshanshan committed
124
125
    nfapi_hi_dci0_request_t        *hi_dci0_req;
    nfapi_hi_dci0_request_body_t   *hi_dci0_req_body;
126
    nfapi_hi_dci0_request_pdu_t    *hi_dci0_pdu;
jftt_wangshanshan's avatar
jftt_wangshanshan committed
127
    uint8_t sf_ahead_dl;
128
    uint8_t rvseq[4] = { 0, 2, 3, 1 };
129
130


131
132
133
134
    ul_req = &mac->UL_req_tmp[CC_id][ra->Msg3_subframe];
    ul_req_body = &ul_req->ul_config_request_body;
    AssertFatal(ra->state != IDLE, "RA is not active for RA %X\n",
		ra->rnti);
135

136
#ifdef Rel14
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
    if (ra->rach_resource_type > 0) {
	LOG_D(MAC,
	      "[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d CE level %d is active, Msg3 in (%d,%d)\n",
	      module_idP, frameP, subframeP, CC_id,
	      ra->rach_resource_type - 1, ra->Msg3_frame,
	      ra->Msg3_subframe);
	LOG_D(MAC,
	      "Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d)\n",
	      frameP, subframeP, ra->Msg3_frame, ra->Msg3_subframe,
	      ra->msg3_nb_rb, ra->msg3_round);

	ul_config_pdu =
	    &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus];

	memset((void *) ul_config_pdu, 0,
	       sizeof(nfapi_ul_config_request_pdu_t));
	ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_ULSCH_PDU_TYPE;
	ul_config_pdu->pdu_size =
	    (uint8_t) (2 + sizeof(nfapi_ul_config_ulsch_pdu));
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.handle = mac->ul_handle++;
157
        ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_ULSCH_PDU_REL8_TAG;
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti = ra->rnti;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start =
	    narrowband_to_first_rb(cc,
				   ra->msg34_narrowband) +
	    ra->msg3_first_rb;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks =
	    ra->msg3_nb_rb;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.modulation_type = 2;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.cyclic_shift_2_for_drms =
	    0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.
	    frequency_hopping_enabled_flag = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_bits = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.new_data_indication = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.redundancy_version =
	    rvseq[ra->msg3_round];
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number =
	    ((10 * ra->Msg3_frame) + ra->Msg3_subframe) & 7;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.ul_tx_mode = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.current_tx_nb = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.n_srs = 1;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.size =
	    get_TBS_UL(ra->msg3_mcs, ra->msg3_nb_rb);
	// Re13 fields
182
        ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.tl.tag = NFAPI_UL_CONFIG_REQUEST_ULSCH_PDU_REL13_TAG;
183
184
185
186
187
188
189
190
191
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.ue_type =
	    ra->rach_resource_type > 2 ? 2 : 1;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.
	    total_number_of_repetitions = 1;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.repetition_number = 1;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.
	    initial_transmission_sf_io =
	    (ra->Msg3_frame * 10) + ra->Msg3_subframe;
	ul_req_body->number_of_pdus++;
192
193
194
        ul_req_body->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
        ul_req->sfn_sf = ra->Msg3_frame<<4|ra->Msg3_subframe;
        ul_req->header.message_id = NFAPI_UL_CONFIG_REQUEST;
195
196
    }				//  if (ra->rach_resource_type>0) {  
    else
197
#endif
198
    {
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
	LOG_D(MAC,
	      "[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d RA is active, Msg3 in (%d,%d)\n",
	      module_idP, frameP, subframeP, CC_id, ra->Msg3_frame,
	      ra->Msg3_subframe);

	LOG_D(MAC,
	      "Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d,%d)\n",
	      frameP, subframeP, ra->Msg3_frame, ra->Msg3_subframe,
	      ra->msg3_nb_rb, ra->msg3_first_rb, ra->msg3_round);

	ul_config_pdu =
	    &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus];

	memset((void *) ul_config_pdu, 0,
	       sizeof(nfapi_ul_config_request_pdu_t));
	ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_ULSCH_PDU_TYPE;
	ul_config_pdu->pdu_size =
	    (uint8_t) (2 + sizeof(nfapi_ul_config_ulsch_pdu));
217
        ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_ULSCH_PDU_REL8_TAG;
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.handle = mac->ul_handle++;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti = ra->rnti;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start =
	    ra->msg3_first_rb;
	AssertFatal(ra->msg3_nb_rb > 0, "nb_rb = 0\n");
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks =
	    ra->msg3_nb_rb;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.modulation_type = 2;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.cyclic_shift_2_for_drms =
	    0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.
	    frequency_hopping_enabled_flag = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_bits = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.new_data_indication = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.redundancy_version =
	    rvseq[ra->msg3_round];
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number =
	    subframe2harqpid(cc, ra->Msg3_frame, ra->Msg3_subframe);
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.ul_tx_mode = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.current_tx_nb = 0;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.n_srs = 1;
	ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.size =
	    get_TBS_UL(10, ra->msg3_nb_rb);
	ul_req_body->number_of_pdus++;
242
243
244
        ul_req_body->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
        ul_req->sfn_sf = ra->Msg3_frame<<4|ra->Msg3_subframe;
        ul_req->header.message_id = NFAPI_UL_CONFIG_REQUEST;
245
	// save UL scheduling information for preprocessor
246
247
248
	for (j = 0; j < ra->msg3_nb_rb; j++)
	    cc->vrb_map_UL[ra->msg3_first_rb + j] = 1;

249
        LOG_D(MAC, "MSG3: UL_CONFIG SFN/SF:%d number_of_pdus:%d ra->msg3_round:%d\n", NFAPI_SFNSF2DEC(ul_req->sfn_sf), ul_req_body->number_of_pdus, ra->msg3_round);
250
251

	if (ra->msg3_round != 0) {	// program HI too
jftt_wangshanshan's avatar
jftt_wangshanshan committed
252
253
254
	    sf_ahead_dl = ul_subframe2_k_phich(cc, subframeP);
	    hi_dci0_req = &mac->HI_DCI0_req[CC_id][(subframeP+sf_ahead_dl)%10];
	    hi_dci0_req_body = &hi_dci0_req->hi_dci0_request_body;
255
	    hi_dci0_pdu = &hi_dci0_req_body->hi_dci0_pdu_list[hi_dci0_req_body->number_of_dci + hi_dci0_req_body->number_of_hi];
256
257
258
259
	    memset((void *) hi_dci0_pdu, 0,
		   sizeof(nfapi_hi_dci0_request_pdu_t));
	    hi_dci0_pdu->pdu_type = NFAPI_HI_DCI0_HI_PDU_TYPE;
	    hi_dci0_pdu->pdu_size = 2 + sizeof(nfapi_hi_dci0_hi_pdu);
260
            hi_dci0_pdu->hi_pdu.hi_pdu_rel8.tl.tag = NFAPI_HI_DCI0_REQUEST_HI_PDU_REL8_TAG;
261
262
263
264
	    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.resource_block_start =
		ra->msg3_first_rb;
	    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.cyclic_shift_2_for_drms = 0;
	    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.hi_value = 0;
265
266
267
268
269
	    hi_dci0_req_body->number_of_hi++;

            hi_dci0_req_body->sfnsf = sfnsf_add_subframe(ra->Msg3_frame, ra->Msg3_subframe, 0);
            hi_dci0_req_body->tl.tag = NFAPI_HI_DCI0_REQUEST_BODY_TAG;

jftt_wangshanshan's avatar
jftt_wangshanshan committed
270
            hi_dci0_req->sfn_sf = hi_dci0_req->sfn_sf = sfnsf_add_subframe(frameP, subframeP, sf_ahead_dl);
271
272
273
274
275
276
277
278
279
            hi_dci0_req->header.message_id = NFAPI_HI_DCI0_REQUEST;

            if (nfapi_mode) {
              oai_nfapi_hi_dci0_req(hi_dci0_req);
              hi_dci0_req_body->number_of_hi=0;
            }

            LOG_D(MAC, "MSG3: HI_DCI0 SFN/SF:%d number_of_dci:%d number_of_hi:%d\n", NFAPI_SFNSF2DEC(hi_dci0_req->sfn_sf), hi_dci0_req_body->number_of_dci, hi_dci0_req_body->number_of_hi);

280
281
282
283
284
285
286
287
288
289
	    // save UL scheduling information for preprocessor
	    for (j = 0; j < ra->msg3_nb_rb; j++)
		cc->vrb_map_UL[ra->msg3_first_rb + j] = 1;

	    LOG_D(MAC,
		  "[eNB %d][PUSCH-RA %x] CC_id %d Frame %d subframeP %d Scheduled (PHICH) RA (mcs %d, first rb %d, nb_rb %d,round %d)\n",
		  module_idP, ra->rnti, CC_id, frameP, subframeP, 10, 1, 1,
		  ra->msg3_round - 1);
	}			//       if (ra->msg3_round != 0) { // program HI too
    }				// non-BL/CE UE case
290
291
}

292
293
294
295
296
297
298
void
generate_Msg2(module_id_t module_idP, int CC_idP, frame_t frameP,
	      sub_frame_t subframeP, RA_t * ra)
{

    eNB_MAC_INST *mac = RC.mac[module_idP];
    COMMON_channels_t *cc = mac->common_channels;
knopp's avatar
   
knopp committed
299

300
301
302
303
304
305
    uint8_t *vrb_map;
    int first_rb;
    int N_RB_DL;
    nfapi_dl_config_request_pdu_t *dl_config_pdu;
    nfapi_tx_request_pdu_t *TX_req;
    nfapi_dl_config_request_body_t *dl_req;
gauthier's avatar
   
gauthier committed
306

307
308
309
310
    vrb_map = cc[CC_idP].vrb_map;
    dl_req = &mac->DL_req[CC_idP].dl_config_request_body;
    dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu];
    N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);
311

312
#ifdef Rel14
313
314
315
316
317
318
319
320
321
322
323
324
325
    int rmax = 0;
    int rep = 0;
    int reps = 0;
    int num_nb = 0;

    first_rb = 0;
    struct PRACH_ConfigSIB_v1310 *ext4_prach;
    PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
    PRACH_ParametersCE_r13_t *p[4] = { NULL, NULL, NULL, NULL };

    uint16_t absSF = (10 * frameP) + subframeP;
    uint16_t absSF_Msg2 = (10 * ra->Msg2_frame) + ra->Msg2_subframe;

326
327
    LOG_D(MAC,"absSF:%d absSF_Msg2:%d ra->rach_resource_type:%d\n",absSF,absSF_Msg2,ra->rach_resource_type);

jftt_wangshanshan's avatar
jftt_wangshanshan committed
328
    if (absSF < absSF_Msg2)
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
	return;			// we're not ready yet, need to be to start ==  

    if (cc[CC_idP].radioResourceConfigCommon_BR) {

	ext4_prach =
	    cc[CC_idP].radioResourceConfigCommon_BR->ext4->
	    prach_ConfigCommon_v1310;
	prach_ParametersListCE_r13 =
	    &ext4_prach->prach_ParametersListCE_r13;

	switch (prach_ParametersListCE_r13->list.count) {
	case 4:
	    p[3] = prach_ParametersListCE_r13->list.array[3];
	case 3:
	    p[2] = prach_ParametersListCE_r13->list.array[2];
	case 2:
	    p[1] = prach_ParametersListCE_r13->list.array[1];
	case 1:
	    p[0] = prach_ParametersListCE_r13->list.array[0];
	    break;
	default:
	    AssertFatal(1 == 0,
			"Illegal count for prach_ParametersListCE_r13 %d\n",
			(int) prach_ParametersListCE_r13->list.count);
	    break;
354
	}
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
    }

    if (ra->rach_resource_type > 0) {

	// This uses an MPDCCH Type 2 common allocation according to Section 9.1.5 36-213
	// Parameters:
	//    p=2+4 PRB set (number of PRB pairs 3)
	//    rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3
	//    if CELevel = 0,1 => Table 9.1.5-1b for MPDCCH candidates
	//    if CELevel = 2,3 => Table 9.1.5-2b for MPDCCH candidates
	//    distributed transmission

	// rmax from SIB2 information
	AssertFatal(rmax < 9, "rmax>8!\n");
	rmax =
	    1 << p[ra->rach_resource_type -
		   1]->mpdcch_NumRepetition_RA_r13;
	// choose r1 by default for RAR (Table 9.1.5-5)
	rep = 0;
	// get actual repetition count from Table 9.1.5-3
	reps = (rmax <= 8) ? (1 << rep) : (rmax >> (3 - rep));
	// get narrowband according to higher-layer config 
	num_nb =
	    p[ra->rach_resource_type -
	      1]->mpdcch_NarrowbandsToMonitor_r13.list.count;
	ra->msg2_narrowband =
	    *p[ra->rach_resource_type -
	       1]->mpdcch_NarrowbandsToMonitor_r13.list.array[ra->
							      preamble_index
							      % num_nb];
	first_rb =
	    narrowband_to_first_rb(&cc[CC_idP], ra->msg2_narrowband);

	if ((ra->msg2_mpdcch_repetition_cnt == 0) &&
	    (mpdcch_sf_condition
	     (mac, CC_idP, frameP, subframeP, rmax, TYPE2, -1) > 0)) {
	    // MPDCCH configuration for RAR
	    LOG_D(MAC,
		  "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming MPDCCH %d repetitions\n",
		  module_idP, frameP, subframeP, reps);


	    memset((void *) dl_config_pdu, 0,
		   sizeof(nfapi_dl_config_request_pdu_t));
	    dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE;
	    dl_config_pdu->pdu_size =
		(uint8_t) (2 + sizeof(nfapi_dl_config_mpdcch_pdu));
402
            dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tl.tag = NFAPI_DL_CONFIG_REQUEST_MPDCCH_PDU_REL13_TAG;
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format =
		(ra->rach_resource_type > 1) ? 11 : 10;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band =
		ra->msg2_narrowband;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		number_of_prb_pairs = 6;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment = 0;	// Note: this can be dynamic
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_tansmission_type = 1;	// imposed (9.1.5 in 213) for Type 2 Common search space  
	    AssertFatal(cc[CC_idP].
			sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13
			!= NULL,
			"cc[CC_id].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 is null\n");
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol =
		cc[CC_idP].sib1_v13ext->
		bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index = 0;	// Note: this should be dynamic
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level = 16;	// OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type = 2;	// RA-RNTI
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = ra->RA_rnti;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode =
		(ra->rach_resource_type < 3) ? 1 : 2;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		drms_scrambling_init = cc[CC_idP].physCellId;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		initial_transmission_sf_io = (frameP * 10) + subframeP;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power = 6000;	// 0dB
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding = getRIV(6, 0, 6);	// Note: still to be checked if it should not be (getRIV(N_RB_DL,first_rb,6)) : Check nFAPI specifications and what is done L1 with this parameter
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs = 4;	// adjust according to size of RAR, 208 bits with N1A_PRB=3
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels = 4;	// fix to 4 for now
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		harq_resource_offset = 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.dci_subframe_repetition_number = rep;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc = 1;	// N1A_PRB=3 (36.212); => 208 bits for mcs=4, choose mcs according t message size TBD
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.downlink_assignment_index_length = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		downlink_assignment_index = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		allocate_prach_flag = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request = 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag
		= 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity = 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.frequency_hopping_enabled_flag = 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag
		= 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding = 0;	// this is not needed by OAI L1, but should be filled in
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		number_of_tx_antenna_ports = 1;
	    ra->msg2_mpdcch_repetition_cnt++;
	    dl_req->number_pdu++;
475
            dl_req->tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;
476
477
	    ra->Msg2_subframe = (ra->Msg2_subframe + 9) % 10;

478
479
            mac->DL_req[CC_idP].sfn_sf = sfnsf_add_subframe(ra->Msg2_frame, ra->Msg2_subframe, 4);	// nFAPI is runnning at TX SFN/SF - ie 4 ahead
            mac->DL_req[CC_idP].header.message_id = NFAPI_DL_CONFIG_REQUEST;
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
	}			//repetition_count==0 && SF condition met
	if (ra->msg2_mpdcch_repetition_cnt > 0) {	// we're in a stream of repetitions
	    LOG_D(MAC,
		  "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, MPDCCH repetition %d\n",
		  module_idP, frameP, subframeP,
		  ra->msg2_mpdcch_repetition_cnt);

	    if (ra->msg2_mpdcch_repetition_cnt == reps) {	// this is the last mpdcch repetition
		if (cc[CC_idP].tdd_Config == NULL) {	// FDD case
		    // wait 2 subframes for PDSCH transmission
		    if (subframeP > 7)
			ra->Msg2_frame = (frameP + 1) & 1023;
		    else
			ra->Msg2_frame = frameP;
		    ra->Msg2_subframe = (subframeP + 2) % 10;	// +2 is the "n+x" from Section 7.1.11  in 36.213
		} else {
		    AssertFatal(1 == 0, "TDD case not done yet\n");
		}
	    }			// mpdcch_repetition_count == reps
	    ra->msg2_mpdcch_repetition_cnt++;

	    if ((ra->Msg2_frame == frameP)
		&& (ra->Msg2_subframe == subframeP)) {
		// Program PDSCH
		LOG_D(MAC,
		      "[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming PDSCH\n",
		      module_idP, frameP, subframeP);
		ra->state = WAITMSG3;
Cedric Roux's avatar
Cedric Roux committed
508
                LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:WAITMSG3\n", module_idP, frameP, subframeP);
509
510
511
512
513
514
515
516

		dl_config_pdu =
		    &dl_req->dl_config_pdu_list[dl_req->number_pdu];
		memset((void *) dl_config_pdu, 0,
		       sizeof(nfapi_dl_config_request_pdu_t));
		dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
		dl_config_pdu->pdu_size =
		    (uint8_t) (2 + sizeof(nfapi_dl_config_dlsch_pdu));
517
                dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL8_TAG;
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index =
		    mac->pdu_index[CC_idP];
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->RA_rnti;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    resource_allocation_type = 2;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;	// localized
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    resource_block_coding = getRIV(N_RB_DL, first_rb, 6);
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2;	//QPSK
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    redundancy_version = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1;	// first block
		dl_config_pdu->dlsch_pdu.
		    dlsch_pdu_rel8.transport_block_to_codeword_swap_flag =
		    0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    transmission_scheme = (cc->p_eNB == 1) ? 0 : 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers =
		    1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    number_of_subbands = 1;
		//      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index                         = ;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    ue_category_capacity = 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4;	// 0 dB
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    delta_power_offset_index = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize(cc->mib->message.dl_Bandwidth);	// ignored
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode =
		    (cc->p_eNB == 1) ? 1 : 2;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    num_bf_prb_per_subband = 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1;
		//      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector                    = ; 

		// Rel10 fields
555
                dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.tl.tag = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL10_TAG;
556
557
558
559
560
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start =
		    cc[CC_idP].
		    sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->
		    startSymbolBR_r13;
		// Rel13 fields
561
                dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.tl.tag = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL13_TAG;
562
563
564
565
566
567
568
569
570
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type =
		    (ra->rach_resource_type < 3) ? 1 : 2;;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type = 2;	// not SI message
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.
		    initial_transmission_sf_io = (10 * frameP) + subframeP;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag =
		    0;
		dl_req->number_pdu++;

571
572
573
                mac->DL_req[CC_idP].sfn_sf = (frameP<<4)+subframeP;
                mac->DL_req[CC_idP].header.message_id = NFAPI_DL_CONFIG_REQUEST;

Cedric Roux's avatar
Cedric Roux committed
574
                LOG_D(MAC,"DL_CONFIG SFN/SF:%d/%d MESSAGE2\n", frameP, subframeP);
575

576
577
578
579
580
581
582
583
		// Program UL processing for Msg3, same as regular LTE
		get_Msg3alloc(&cc[CC_idP], subframeP, frameP,
			      &ra->Msg3_frame, &ra->Msg3_subframe);
		add_msg3(module_idP, CC_idP, ra, frameP, subframeP);
		fill_rar_br(mac, CC_idP, ra, frameP, subframeP,
			    cc[CC_idP].RAR_pdu.payload,
			    ra->rach_resource_type - 1);
		// DL request
584
585
                mac->TX_req[CC_idP].tx_request_body.tl.tag = NFAPI_TX_REQUEST_BODY_TAG;
                mac->TX_req[CC_idP].header.message_id = NFAPI_TX_REQUEST;
586
587
588
589
590
591
592
593
594
595
596
597
598
		mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
		TX_req =
		    &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->
								     TX_req
								     [CC_idP].
								     tx_request_body.number_of_pdus];
		TX_req->pdu_length = 7;	// This should be changed if we have more than 1 preamble 
		TX_req->pdu_index = mac->pdu_index[CC_idP]++;
		TX_req->num_segments = 1;
		TX_req->segments[0].segment_length = 7;
		TX_req->segments[0].segment_data =
		    cc[CC_idP].RAR_pdu.payload;
		mac->TX_req[CC_idP].tx_request_body.number_of_pdus++;
Xu Bo's avatar
Xu Bo committed
599
#ifdef UE_EXPANSION
600
        set_dl_ue_select(CC_idP, SCH_DL_MSG2, 4, -1, ra->rnti);
Xu Bo's avatar
Xu Bo committed
601
#endif
602
	    }
603
	}
604
605

    } else
606
#endif
607
    {
608

609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
	if ((ra->Msg2_frame == frameP) && (ra->Msg2_subframe == subframeP)) {
	    LOG_D(MAC,
		  "[eNB %d] CC_id %d Frame %d, subframeP %d: Generating RAR DCI, state %d\n",
		  module_idP, CC_idP, frameP, subframeP, ra->state);

	    // Allocate 4 PRBS starting in RB 0
	    first_rb = 0;
	    vrb_map[first_rb] = 1;
	    vrb_map[first_rb + 1] = 1;
	    vrb_map[first_rb + 2] = 1;
	    vrb_map[first_rb + 3] = 1;

	    memset((void *) dl_config_pdu, 0,
		   sizeof(nfapi_dl_config_request_pdu_t));
	    dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE;
	    dl_config_pdu->pdu_size =
		(uint8_t) (2 + sizeof(nfapi_dl_config_dci_dl_pdu));
626
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DCI_DL_PDU_REL8_TAG;
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format =
		NFAPI_DL_DCI_FORMAT_1A;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level =
		4;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti = ra->RA_rnti;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type = 2;	// RA-RNTI : see Table 4-10 from SCF082 - nFAPI specifications
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power = 6000;	// equal to RS power

	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process = 0;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tpc = 1;	// no TPC
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.
		new_data_indicator_1 = 1;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_1 = 0;
	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.
		redundancy_version_1 = 0;
	    dl_config_pdu->dci_dl_pdu.
		dci_dl_pdu_rel8.virtual_resource_block_assignment_flag = 0;

	    dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.
		resource_block_coding = getRIV(N_RB_DL, first_rb, 4);

	    // This checks if the above DCI allocation is feasible in current subframe
	    if (!CCE_allocation_infeasible
		(module_idP, CC_idP, 0, subframeP,
		 dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.
		 aggregation_level, ra->RA_rnti)) {
		LOG_D(MAC,
		      "Frame %d: Subframe %d : Adding common DCI for RA_RNTI %x\n",
		      frameP, subframeP, ra->RA_rnti);
		dl_req->number_dci++;
		dl_req->number_pdu++;

		dl_config_pdu =
		    &dl_req->dl_config_pdu_list[dl_req->number_pdu];
		memset((void *) dl_config_pdu, 0,
		       sizeof(nfapi_dl_config_request_pdu_t));
		dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
		dl_config_pdu->pdu_size =
		    (uint8_t) (2 + sizeof(nfapi_dl_config_dlsch_pdu));
666
                dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL8_TAG;
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
692
693
694
695
696
697
698
699
700
701
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index =
		    mac->pdu_index[CC_idP];
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->RA_rnti;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2;	// format 1A/1B/1D
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;	// localized
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    resource_block_coding = getRIV(N_RB_DL, first_rb, 4);
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2;	//QPSK
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    redundancy_version = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1;	// first block
		dl_config_pdu->dlsch_pdu.
		    dlsch_pdu_rel8.transport_block_to_codeword_swap_flag =
		    0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    transmission_scheme = (cc->p_eNB == 1) ? 0 : 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers =
		    1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    number_of_subbands = 1;
		//    dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index                         = ;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    ue_category_capacity = 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4;	// 0 dB
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    delta_power_offset_index = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize(cc->mib->message.dl_Bandwidth);	// ignored
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode =
		    (cc->p_eNB == 1) ? 1 : 2;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    num_bf_prb_per_subband = 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1;
		//    dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector                    = ; 
		dl_req->number_pdu++;
702
                mac->DL_req[CC_idP].sfn_sf = frameP<<4 | subframeP;
703
704
705
706
707
708
709
710
711
712
713
714
715
716

		// Program UL processing for Msg3
		get_Msg3alloc(&cc[CC_idP], subframeP, frameP,
			      &ra->Msg3_frame, &ra->Msg3_subframe);

		LOG_D(MAC,
		      "Frame %d, Subframe %d: Setting Msg3 reception for Frame %d Subframe %d\n",
		      frameP, subframeP, ra->Msg3_frame,
		      ra->Msg3_subframe);

		fill_rar(module_idP, CC_idP, ra, frameP,
			 cc[CC_idP].RAR_pdu.payload, N_RB_DL, 7);
		add_msg3(module_idP, CC_idP, ra, frameP, subframeP);
		ra->state = WAITMSG3;
Cedric Roux's avatar
Cedric Roux committed
717
                LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:WAITMSG3\n", module_idP, frameP, subframeP);
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732

		// DL request
		mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
		TX_req =
		    &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->
								     TX_req
								     [CC_idP].
								     tx_request_body.number_of_pdus];
		TX_req->pdu_length = 7;	// This should be changed if we have more than 1 preamble 
		TX_req->pdu_index = mac->pdu_index[CC_idP]++;
		TX_req->num_segments = 1;
		TX_req->segments[0].segment_length = 7;
		TX_req->segments[0].segment_data =
		    cc[CC_idP].RAR_pdu.payload;
		mac->TX_req[CC_idP].tx_request_body.number_of_pdus++;
Xu Bo's avatar
Xu Bo committed
733
#ifdef UE_EXPANSION
734
        set_dl_ue_select(CC_idP, SCH_DL_MSG2, 4, -1, ra->rnti);
Xu Bo's avatar
Xu Bo committed
735
#endif
736
737
738
	    }			// PDCCH CCE allocation is feasible
	}			// Msg2 frame/subframe condition
    }				// else BL/CE
739
}
740
741
742
743
void
generate_Msg4(module_id_t module_idP, int CC_idP, frame_t frameP,
	      sub_frame_t subframeP, RA_t * ra)
{
gauthier's avatar
   
gauthier committed
744

745

746
747
748
749
750
751
752
    eNB_MAC_INST *mac = RC.mac[module_idP];
    COMMON_channels_t *cc = mac->common_channels;
    int16_t rrc_sdu_length;
    int UE_id = -1;
    uint16_t msg4_padding;
    uint16_t msg4_post_padding;
    uint16_t msg4_header;
753

754
755
756
757
758
759
760
761
762
763
764
765
766
  uint8_t                         *vrb_map;
  int                             first_rb;
  int                             N_RB_DL;
  nfapi_dl_config_request_pdu_t   *dl_config_pdu;
  nfapi_ul_config_request_pdu_t   *ul_config_pdu;
  nfapi_tx_request_pdu_t          *TX_req;
  UE_list_t                       *UE_list=&mac->UE_list;
  nfapi_dl_config_request_t      *dl_req;
  nfapi_dl_config_request_body_t *dl_req_body;
  nfapi_ul_config_request_body_t *ul_req_body;
  nfapi_ul_config_request_t      *ul_req;
  uint8_t                         lcid;
  uint8_t                         offset;
767

gauthier's avatar
   
gauthier committed
768

769
#ifdef Rel14
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
    int rmax = 0;
    int rep = 0;
    int reps = 0;


    first_rb = 0;
    struct PRACH_ConfigSIB_v1310 *ext4_prach;
    struct PUCCH_ConfigCommon_v1310 *ext4_pucch;
    PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
    struct N1PUCCH_AN_InfoList_r13 *pucch_N1PUCCH_AN_InfoList_r13;
    PRACH_ParametersCE_r13_t *p[4] = { NULL, NULL, NULL, NULL };
    int pucchreps[4] = { 1, 1, 1, 1 };
    int n1pucchan[4] = { 0, 0, 0, 0 };

    if (cc[CC_idP].radioResourceConfigCommon_BR) {

	ext4_prach =
	    cc[CC_idP].radioResourceConfigCommon_BR->ext4->
	    prach_ConfigCommon_v1310;
	ext4_pucch =
	    cc[CC_idP].radioResourceConfigCommon_BR->ext4->
	    pucch_ConfigCommon_v1310;
	prach_ParametersListCE_r13 =
	    &ext4_prach->prach_ParametersListCE_r13;
	pucch_N1PUCCH_AN_InfoList_r13 =
	    ext4_pucch->n1PUCCH_AN_InfoList_r13;
	AssertFatal(prach_ParametersListCE_r13 != NULL,
		    "prach_ParametersListCE_r13 is null\n");
	AssertFatal(pucch_N1PUCCH_AN_InfoList_r13 != NULL,
		    "pucch_N1PUCCH_AN_InfoList_r13 is null\n");
	// check to verify CE-Level compatibility in SIB2_BR
	AssertFatal(prach_ParametersListCE_r13->list.count ==
		    pucch_N1PUCCH_AN_InfoList_r13->list.count,
		    "prach_ParametersListCE_r13->list.count!= pucch_N1PUCCH_AN_InfoList_r13->list.count\n");

	switch (prach_ParametersListCE_r13->list.count) {
	case 4:
	    p[3] = prach_ParametersListCE_r13->list.array[3];
	    n1pucchan[3] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[3];
	    AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level3_r13
			!= NULL,
			"pucch_NumRepetitionCE_Msg4_Level3 shouldn't be NULL\n");
	    pucchreps[3] =
		(int) (4 << *ext4_pucch->
		       pucch_NumRepetitionCE_Msg4_Level3_r13);

	case 3:
	    p[2] = prach_ParametersListCE_r13->list.array[2];
	    n1pucchan[2] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[2];
	    AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13
			!= NULL,
			"pucch_NumRepetitionCE_Msg4_Level2 shouldn't be NULL\n");
	    pucchreps[2] =
		(int) (4 << *ext4_pucch->
		       pucch_NumRepetitionCE_Msg4_Level2_r13);
	case 2:
	    p[1] = prach_ParametersListCE_r13->list.array[1];
	    n1pucchan[1] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[1];
	    AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13
			!= NULL,
			"pucch_NumRepetitionCE_Msg4_Level1 shouldn't be NULL\n");
	    pucchreps[1] =
		(int) (1 << *ext4_pucch->
		       pucch_NumRepetitionCE_Msg4_Level1_r13);
	case 1:
	    p[0] = prach_ParametersListCE_r13->list.array[0];
	    n1pucchan[0] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[0];
	    AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13
			!= NULL,
			"pucch_NumRepetitionCE_Msg4_Level0 shouldn't be NULL\n");
	    pucchreps[0] =
		(int) (1 << *ext4_pucch->
		       pucch_NumRepetitionCE_Msg4_Level0_r13);
	default:
	    AssertFatal(1 == 0,
			"Illegal count for prach_ParametersListCE_r13 %d\n",
			prach_ParametersListCE_r13->list.count);
	}
848
849
850
    }
#endif

851
852
    vrb_map = cc[CC_idP].vrb_map;

853
854
    dl_req        = &mac->DL_req[CC_idP];
    dl_req_body   = &dl_req->dl_config_request_body;
Cedric Roux's avatar
Cedric Roux committed
855
    dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
856
857
858
859
860
861
862
    N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);

    UE_id = find_UE_id(module_idP, ra->rnti);
    AssertFatal(UE_id >= 0, "Can't find UE for t-crnti\n");

    // set HARQ process round to 0 for this UE

jftt_wangshanshan's avatar
jftt_wangshanshan committed
863
    ra->harq_pid = frame_subframe2_dl_harq_pid(cc->tdd_Config,frameP ,subframeP);
864
865
866
867

    // Get RRCConnectionSetup for Piggyback
    rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH, 1,	// 1 transport block
				      &cc[CC_idP].CCCH_pdu.payload[0], ENB_FLAG_YES, module_idP, 0);	// not used in this case
868
869
870
871
872
873
874
  
    if(rrc_sdu_length <= 0) {
      LOG_D(MAC,"[MAC][eNB Scheduler] CCCH not allocated\n %d",rrc_sdu_length);
      return;
    }
    //AssertFatal(rrc_sdu_length > 0,
		//"[MAC][eNB Scheduler] CCCH not allocated\n");
875
876
877
878
879
880
881


    LOG_D(MAC,
	  "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: UE_id %d, rrc_sdu_length %d\n",
	  module_idP, CC_idP, frameP, subframeP, UE_id, rrc_sdu_length);


882
#ifdef Rel14
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
    if (ra->rach_resource_type > 0) {

	// Generate DCI + repetitions first
	// This uses an MPDCCH Type 2 allocation according to Section 9.1.5 36-213, Type2 common allocation according to Table 7.1-8 (36-213)
	// Parameters:
	//    p=2+4 PRB set (number of PRB pairs 6)
	//    rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3
	//    if CELevel = 0,1 => Table 9.1.5-1b for MPDCCH candidates
	//    if CELevel = 2,3 => Table 9.1.5-2b for MPDCCH candidates
	//    distributed transmission

	// rmax from SIB2 information
	rmax = p[ra->rach_resource_type - 1]->mpdcch_NumRepetition_RA_r13;
	AssertFatal(rmax >= 4,
		    "choose rmax>=4 for enough repeititions, or reduce rep to 1 or 2\n");

	// choose r3 by default for Msg4 (this is ok from table 9.1.5-3 for rmax = >=4, if we choose rmax <4 it has to be less
	rep = 2;
	// get actual repetition count from Table 9.1.5-3
	reps = (rmax <= 8) ? (1 << rep) : (rmax >> (3 - rep));
	// get first narrowband
	first_rb =
	    narrowband_to_first_rb(&cc[CC_idP], ra->msg34_narrowband);

	if ((ra->msg4_mpdcch_repetition_cnt == 0) &&
	    (mpdcch_sf_condition
	     (mac, CC_idP, frameP, subframeP, rmax, TYPE2, -1) > 0)) {
	    // MPDCCH configuration for RAR

	    memset((void *) dl_config_pdu, 0,
		   sizeof(nfapi_dl_config_request_pdu_t));
	    dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE;
	    dl_config_pdu->pdu_size =
		(uint8_t) (2 + sizeof(nfapi_dl_config_mpdcch_pdu));
917
            dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tl.tag = NFAPI_DL_CONFIG_REQUEST_MPDCCH_PDU_REL13_TAG;
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format =
		(ra->rach_resource_type > 1) ? 11 : 10;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band =
		ra->msg34_narrowband;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		number_of_prb_pairs = 6;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment = 0;	// Note: this can be dynamic
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		mpdcch_tansmission_type = 1;
	    AssertFatal(cc[CC_idP].
			sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13
			!= NULL,
			"cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 is null\n");
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol =
		cc[CC_idP].sib1_v13ext->
		bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index = 0;	// Note: this should be dynamic
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level = 16;	// OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type = 0;	// t-C-RNTI
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = ra->RA_rnti;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode =
		(ra->rach_resource_type < 3) ? 1 : 2;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init = cc[CC_idP].physCellId;	/// Check this is still N_id_cell for type2 common
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		initial_transmission_sf_io = (frameP * 10) + subframeP;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power = 6000;	// 0dB
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding = getRIV(6, 0, 6);	// check if not getRIV(N_RB_DL,first_rb,6);
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs = 4;	// adjust according to size of Msg4, 208 bits with N1A_PRB=3
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels = 4;	// fix to 4 for now
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process =
		ra->harq_pid;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		harq_resource_offset = 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.dci_subframe_repetition_number = rep;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc = 1;	// N1A_PRB=3; => 208 bits
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.downlink_assignment_index_length = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		downlink_assignment_index = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		allocate_prach_flag = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index = 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request = 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag
		= 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity = 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.frequency_hopping_enabled_flag = 0;
	    dl_config_pdu->mpdcch_pdu.
		mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag
		= 0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication =
		0;
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding = 0;	// this is not needed by OAI L1, but should be filled in
	    dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.
		number_of_tx_antenna_ports = 1;
	    ra->msg4_mpdcch_repetition_cnt++;
990
991
992
993
994
	    dl_req_body->number_pdu++;
            dl_req_body->tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;

            dl_req->sfn_sf = (ra->Msg4_frame<<4)+ra->Msg4_subframe;
            dl_req->header.message_id = NFAPI_DL_CONFIG_REQUEST;
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
1022
1023
	}			//repetition_count==0 && SF condition met
	else if (ra->msg4_mpdcch_repetition_cnt > 0) {	// we're in a stream of repetitions
	    ra->msg4_mpdcch_repetition_cnt++;
	    if (ra->msg4_mpdcch_repetition_cnt == reps) {	// this is the last mpdcch repetition
		if (cc[CC_idP].tdd_Config == NULL) {	// FDD case
		    // wait 2 subframes for PDSCH transmission
		    if (subframeP > 7)
			ra->Msg4_frame = (frameP + 1) & 1023;
		    else
			ra->Msg4_frame = frameP;
		    ra->Msg4_subframe = (subframeP + 2) % 10;
		} else {
		    AssertFatal(1 == 0, "TDD case not done yet\n");
		}
	    }			// mpdcch_repetition_count == reps
	    if ((ra->Msg4_frame == frameP)
		&& (ra->Msg4_subframe == subframeP)) {

		// Program PDSCH

		LOG_D(MAC,
		      "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating Msg4 BR with RRC Piggyback (ce_level %d RNTI %x)\n",
		      module_idP, CC_idP, frameP, subframeP,
		      ra->rach_resource_type - 1, ra->rnti);

		AssertFatal(1 == 0,
			    "Msg4 generation not finished for BL/CE UE\n");
		dl_config_pdu =
1024
		    &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
1025
1026
1027
1028
1029
		memset((void *) dl_config_pdu, 0,
		       sizeof(nfapi_dl_config_request_pdu_t));
		dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
		dl_config_pdu->pdu_size =
		    (uint8_t) (2 + sizeof(nfapi_dl_config_dlsch_pdu));
1030
                dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL8_TAG;
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
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index =
		    mac->pdu_index[CC_idP];
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = ra->rnti;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2;	// format 1A/1B/1D
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;	// localized
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV(N_RB_DL, first_rb, 6);	// check that this isn't getRIV(6,0,6)
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2;	//QPSK
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    redundancy_version = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1;	// first block
		dl_config_pdu->dlsch_pdu.
		    dlsch_pdu_rel8.transport_block_to_codeword_swap_flag =
		    0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    transmission_scheme = (cc->p_eNB == 1) ? 0 : 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers =
		    1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    number_of_subbands = 1;
		//      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index                         = ;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    ue_category_capacity = 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4;	// 0 dB
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    delta_power_offset_index = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize(cc->mib->message.dl_Bandwidth);	// ignored
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode =
		    (cc->p_eNB == 1) ? 1 : 2;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.
		    num_bf_prb_per_subband = 1;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1;
		//      dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector                    = ; 

1065
                dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.tl.tag = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL10_TAG;
1066
1067
1068
1069
1070
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start =
		    cc[CC_idP].
		    sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->
		    startSymbolBR_r13;

1071
                dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.tl.tag = NFAPI_DL_CONFIG_REQUEST_DLSCH_PDU_REL13_TAG;
1072
1073
1074
1075
1076
1077
1078
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type =
		    (ra->rach_resource_type < 3) ? 1 : 2;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type = 2;	// not SI message
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.
		    initial_transmission_sf_io = (10 * frameP) + subframeP;
		dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag =
		    0;
1079
1080
		dl_req_body->number_pdu++;
                dl_req_body->tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;
1081

1082
1083
1084
                mac->DL_req[CC_idP].sfn_sf = (frameP<<4)+subframeP;
                mac->DL_req[CC_idP].header.message_id = NFAPI_DL_CONFIG_REQUEST;
	
1085
		ra->state = WAITMSG4ACK;
Cedric Roux's avatar
Cedric Roux committed
1086
                LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:WAITMSG4ACK\n", module_idP, frameP, subframeP);
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128

		lcid = 0;

		UE_list->UE_sched_ctrl[UE_id].round[CC_idP][ra->harq_pid] =
		    0;
		msg4_header = 1 + 6 + 1;	// CR header, CR CE, SDU header

		if ((ra->msg4_TBsize - rrc_sdu_length - msg4_header) <= 2) {
		    msg4_padding =
			ra->msg4_TBsize - rrc_sdu_length - msg4_header;
		    msg4_post_padding = 0;
		} else {
		    msg4_padding = 0;
		    msg4_post_padding =
			ra->msg4_TBsize - rrc_sdu_length - msg4_header - 1;
		}

		LOG_D(MAC,
		      "[eNB %d][RAPROC] CC_id %d Frame %d subframeP %d Msg4 : TBS %d, sdu_len %d, msg4_header %d, msg4_padding %d, msg4_post_padding %d\n",
		      module_idP, CC_idP, frameP, subframeP,
		      ra->msg4_TBsize, rrc_sdu_length, msg4_header,
		      msg4_padding, msg4_post_padding);
		DevAssert(UE_id != UE_INDEX_INVALID);	// FIXME not sure how to gracefully return
		// CHECK THIS: &cc[CC_idP].CCCH_pdu.payload[0]
		offset = generate_dlsch_header((unsigned char *) mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], 1,	//num_sdus
					       (unsigned short *) &rrc_sdu_length,	//
					       &lcid,	// sdu_lcid
					       255,	// no drx
					       31,	// no timing advance
					       ra->cont_res_id,	// contention res id
					       msg4_padding,	// no padding
					       msg4_post_padding);

		memcpy((void *) &mac->UE_list.
		       DLSCH_pdu[CC_idP][0][(unsigned char)
					    UE_id].payload[0][(unsigned
							       char)
							      offset],
		       &cc[CC_idP].CCCH_pdu.payload[0], rrc_sdu_length);

		// DL request
		mac->TX_req[CC_idP].sfn_sf = (frameP << 4) + subframeP;
1129
1130
1131
                mac->TX_req[CC_idP].tx_request_body.tl.tag  = NFAPI_TX_REQUEST_BODY_TAG;
                mac->TX_req[CC_idP].header.message_id 	    = NFAPI_TX_REQUEST;

1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
		TX_req =
		    &mac->TX_req[CC_idP].tx_request_body.tx_pdu_list[mac->
								     TX_req
								     [CC_idP].
								     tx_request_body.number_of_pdus];
		TX_req->pdu_length = rrc_sdu_length;
		TX_req->pdu_index = mac->pdu_index[CC_idP]++;
		TX_req->num_segments = 1;
		TX_req->segments[0].segment_length = rrc_sdu_length;
		TX_req->segments[0].segment_data =
		    mac->UE_list.
		    DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0];
		mac->TX_req[CC_idP].tx_request_body.number_of_pdus++;

		// Program ACK/NAK for Msg4 PDSCH
		int absSF = (ra->Msg3_frame * 10) + ra->Msg3_subframe;
		// see Section 10.2 from 36.213
		int ackNAK_absSF = absSF + reps + 4;
		AssertFatal(reps > 2,
			    "Have to handle programming of ACK when PDSCH repetitions is > 2\n");
1152
1153
1154
		ul_req = &mac->UL_req_tmp[CC_idP][ackNAK_absSF % 10];
		ul_req_body = &ul_req->ul_config_request_body;
		ul_config_pdu = &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus];
1155
1156
1157
1158
1159

		ul_config_pdu->pdu_type =
		    NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE;
		ul_config_pdu->pdu_size =
		    (uint8_t) (2 + sizeof(nfapi_ul_config_uci_harq_pdu));
1160
                ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL8_TAG;
1161
1162
1163
		ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.handle = 0;	// don't know how to use this
		ul_config_pdu->uci_harq_pdu.
		    ue_information.ue_information_rel8.rnti = ra->rnti;
1164
                ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL13_TAG;
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
		ul_config_pdu->uci_harq_pdu.
		    ue_information.ue_information_rel13.ue_type =
		    (ra->rach_resource_type < 3) ? 1 : 2;
		ul_config_pdu->uci_harq_pdu.
		    ue_information.ue_information_rel13.empty_symbols = 0;
		ul_config_pdu->uci_harq_pdu.ue_information.
		    ue_information_rel13.total_number_of_repetitions =
		    pucchreps[ra->rach_resource_type - 1];
		ul_config_pdu->uci_harq_pdu.
		    ue_information.ue_information_rel13.repetition_number =
		    0;
1176
1177
1178
1179
1180
1181
1182
1183

                ul_req_body->tl.tag                                                                         = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;

                ul_req->sfn_sf  									    = sfnsf_add_subframe(ra->Msg3_frame, ra->Msg3_subframe, 4);
                ul_req->header.message_id  								    = NFAPI_UL_CONFIG_REQUEST;

                LOG_D(MAC,"UL_req_tmp[CC_idP:%d][ackNAK_absSF mod 10:%d] ra->Msg3_frame:%d ra->Msg3_subframe:%d + 4 sfn_sf:%d\n", CC_idP, ackNAK_absSF%10, ra->Msg3_frame, ra->Msg3_subframe, NFAPI_SFNSF2DEC(ul_req->sfn_sf));

1184
1185
		// Note need to keep sending this across reptitions!!!! Not really for PUCCH, to ask small-cell forum, we'll see for the other messages, maybe parameters change across repetitions and FAPI has to provide for that
		if (cc[CC_idP].tdd_Config == NULL) {	// FDD case
1186
                  ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel8_fdd.tl.tag = NFAPI_UL_CONFIG_REQUEST_HARQ_INFORMATION_REL8_FDD_TAG;
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
		    ul_config_pdu->uci_harq_pdu.
			harq_information.harq_information_rel8_fdd.
			n_pucch_1_0 =
			n1pucchan[ra->rach_resource_type - 1];
		    // NOTE: How to fill in the rest of the n_pucch_1_0 information 213 Section 10.1.2.1 in the general case
		    // = N_ECCE_q + Delta_ARO + n1pucchan[ce_level]
		    // higher in the MPDCCH configuration, N_ECCE_q is hard-coded to 0, and harq resource offset to 0 =>
		    // Delta_ARO = 0 from Table 10.1.2.1-1
		    ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel8_fdd.harq_size = 1;	// 1-bit ACK/NAK
		} else {
		    AssertFatal(1 == 0,
				"PUCCH configuration for ACK/NAK not handled yet for TDD BL/CE case\n");
		}
1200
		ul_req_body->number_of_pdus++;
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
		T(T_ENB_MAC_UE_DL_PDU_WITH_DATA, T_INT(module_idP),
		  T_INT(CC_idP), T_INT(ra->rnti), T_INT(frameP),
		  T_INT(subframeP), T_INT(0 /*harq_pid always 0? */ ),
		  T_BUFFER(&mac->UE_list.DLSCH_pdu[CC_idP][0][UE_id].
			   payload[0], ra->msg4_TBsize));

		if (opt_enabled == 1) {
		    trace_pdu(1,
			      (uint8_t *) mac->
			      UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)
							   UE_id].payload
			      [0], rrc_sdu_length, UE_id, 3,
			      UE_RNTI(module_idP, UE_id), mac->frame,
			      mac->subframe, 0, 0);
		    LOG_D(OPT,
			  "[eNB %d][DLSCH] CC_id %d Frame %d trace pdu for rnti %x with size %d\n",
			  module_idP, CC_idP, frameP, UE_RNTI(module_idP,
							      UE_id),
			  rrc_sdu_length);
		}
Xu Bo's avatar
Xu Bo committed
1221
#ifdef UE_EXPANSION
1222
        set_dl_ue_select(CC_idP, SCH_DL_MSG4, 4, UE_id, ra->rnti);
Xu Bo's avatar
Xu Bo committed
1223
#endif
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
	    }			// Msg4 frame/subframe
	}			// msg4_mpdcch_repetition_count
    }				// rach_resource_type > 0 
    else
#endif
    {				// This is normal LTE case
	if ((ra->Msg4_frame == frameP) && (ra->Msg4_subframe == subframeP)) {
	    LOG_D(MAC,
		  "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating Msg4 with RRC Piggyback (RNTI %x)\n",
		  module_idP, CC_idP, frameP, subframeP, ra->rnti);

	    /// Choose first 4 RBs for Msg4, should really check that these are free!
	    first_rb = 0;

	    vrb_map[first_rb] = 1;
	    vrb_map[first_rb + 1] = 1;
	    vrb_map[first_rb + 2] = 1;
	    vrb_map[first_rb + 3] = 1;


	    // Compute MCS/TBS for 3 PRB (coded on 4 vrb)
	    msg4_header = 1 + 6 + 1;	// CR header, CR CE, SDU header

	    if ((rrc_sdu_length + msg4_header) <= 22) {
		ra->msg4_mcs = 4;
		ra->msg4_TBsize = 22;
	    } else if ((rrc_sdu_length + msg4_header) <= 28) {
		ra->msg4_mcs = 5;
		ra->msg4_TBsize = 28;
	    } else if ((rrc_sdu_length + msg4_header) <= 32) {
		ra->msg4_mcs = 6;
		ra->msg4_TBsize = 32;
	    } else if ((rrc_sdu_length + msg4_header) <= 41) {
		ra->msg4_mcs = 7;
		ra->msg4_TBsize = 41;
	    } else if ((rrc_sdu_length + msg4_header) <= 49) {
		ra->msg4_mcs = 8;
		ra->msg4_TBsize = 49;
	    } else if ((rrc_sdu_length + msg4_header) <= 57) {
		ra->msg4_mcs = 9;
		ra->msg4_TBsize = 57;
	    }

	    fill_nfapi_dl_dci_1A(dl_config_pdu, 4,	// aggregation_level
				 ra->rnti,	// rnti
				 1,	// rnti_type, CRNTI
				 ra->harq_pid,	// harq_process
				 1,	// tpc, none
				 getRIV(N_RB_DL, first_rb, 4),	// resource_block_coding
				 ra->msg4_mcs,	// mcs
				 1,	// ndi
				 0,	// rv
				 0);	// vrb_flag
1277

1278
1279
	    LOG_D(MAC,
		  "Frame %d, subframe %d: Msg4 DCI pdu_num %d (rnti %x,rnti_type %d,harq_pid %d, resource_block_coding (%p) %d\n",
1280
		  frameP, subframeP, dl_req_body->number_pdu,
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
		  dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti,
		  dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type,
		  dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process,
		  &dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.
		  resource_block_coding,
		  dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.
		  resource_block_coding);
	    AssertFatal(dl_config_pdu->dci_dl_pdu.
			dci_dl_pdu_rel8.resource_block_coding < 8192,
			"resource_block_coding %u < 8192\n",
			dl_config_pdu->dci_dl_pdu.
			dci_dl_pdu_rel8.resource_block_coding);
	    if (!CCE_allocation_infeasible
		(module_idP, CC_idP, 1, subframeP,
		 dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.
		 aggregation_level, ra->rnti)) {
1297
1298
		dl_req_body->number_dci++;
		dl_req_body->number_pdu++;
1299
1300

		ra->state = WAITMSG4ACK;
Cedric Roux's avatar
Cedric Roux committed
1301
                LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:WAITMSG4ACK\n", module_idP, frameP, subframeP);
1302
1303
1304
1305
1306
1307

		// increment Absolute subframe by 8 for Msg4 retransmission
		LOG_D(MAC,
		      "Frame %d, Subframe %d: Preparing for Msg4 retransmission currently %d.%d\n",
		      frameP, subframeP, ra->Msg4_frame,
		      ra->Msg4_subframe);
jftt_wangshanshan's avatar
jftt_wangshanshan committed
1308
1309
		get_retransmission_timing(mac->common_channels[CC_idP].tdd_Config,&ra->Msg4_frame,&ra->Msg4_subframe);

1310
1311
1312
1313
1314
1315
1316
		LOG_D(MAC,
		      "Frame %d, Subframe %d: Msg4 retransmission in %d.%d\n",
		      frameP, subframeP, ra->Msg4_frame,
		      ra->Msg4_subframe);
		lcid = 0;

		// put HARQ process round to 0
1317
1318
		ra->harq_pid = frame_subframe2_dl_harq_pid(cc->tdd_Config,frameP ,subframeP);

1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
		UE_list->UE_sched_ctrl[UE_id].round[CC_idP][ra->harq_pid] =
		    0;

		if ((ra->msg4_TBsize - rrc_sdu_length - msg4_header) <= 2) {
		    msg4_padding =
			ra->msg4_TBsize - rrc_sdu_length - msg4_header;
		    msg4_post_padding = 0;
		} else {
		    msg4_padding = 0;
		    msg4_post_padding =
			ra->msg4_TBsize - rrc_sdu_length - msg4_header - 1;
		}

		LOG_D(MAC,
		      "[eNB %d][RAPROC] CC_idP %d Frame %d subframeP %d Msg4 : TBS %d, sdu_len %d, msg4_header %d, msg4_padding %d, msg4_post_padding %d\n",
		      module_idP, CC_idP, frameP, subframeP,
		      ra->msg4_TBsize, rrc_sdu_length, msg4_header,
		      msg4_padding, msg4_post_padding);
		DevAssert(UE_id != UE_INDEX_INVALID);	// FIXME not sure how to gracefully return
		// CHECK THIS: &cc[CC_idP].CCCH_pdu.payload[0]
		offset = generate_dlsch_header((unsigned char *) mac->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char) UE_id].payload[0], 1,	//num_sdus
					       (unsigned short *) &rrc_sdu_length,	//
					       &lcid,	// sdu_lcid
					       255,	// no drx
					       31,	// no timing advance
					       ra->cont_res_id,	// contention res id
					       msg4_padding,	// no padding
					       msg4_post_padding);

		memcpy((void *) &mac->UE_list.
		       DLSCH_pdu[CC_idP][0][(unsigned char)
					    UE_id].payload[0][(unsigned
							       char)
							      offset],
		       &cc[CC_idP].CCCH_pdu.payload[0], rrc_sdu_length);

		// DLSCH Config
1356
		fill_nfapi_dlsch_config(mac, dl_req_body, ra->msg4_TBsize, mac->pdu_index[CC_idP], ra->rnti, 2,	// resource_allocation_type : format 1A/1B/1D
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
					0,	// virtual_resource_block_assignment_flag : localized
					getRIV(N_RB_DL, first_rb, 4),	// resource_block_coding : RIV, 4 PRB
					2,	// modulation: QPSK
					0,	// redundancy version
					1,	// transport_blocks
					0,	// transport_block_to_codeword_swap_flag (0)
					(cc->p_eNB == 1) ? 0 : 1,	// transmission_scheme
					1,	// number of layers
					1,	// number of subbands
					//0,                         // codebook index 
					1,	// ue_category_capacity
					4,	// pa: 0 dB
					0,	// delta_power_offset_index
					0,	// ngap
					1,	// NPRB = 3 like in DCI
					(cc->p_eNB == 1) ? 1 : 2,	// transmission mode
					1,	// num_bf_prb_per_subband
					1);	// num_bf_vector
		LOG_D(MAC,
		      "Filled DLSCH config, pdu number %d, non-dci pdu_index %d\n",
1377
		      dl_req_body->number_pdu, mac->pdu_index[CC_idP]);
1378

1379
		// Tx request
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
		mac->TX_req[CC_idP].sfn_sf =
		    fill_nfapi_tx_req(&mac->TX_req[CC_idP].tx_request_body,
				      (frameP * 10) + subframeP,
				      rrc_sdu_length,
				      mac->pdu_index[CC_idP],
				      mac->UE_list.
				      DLSCH_pdu[CC_idP][0][(unsigned char)
							   UE_id].payload
				      [0]);
		mac->pdu_index[CC_idP]++;

1391
1392
                dl_req->sfn_sf = mac->TX_req[CC_idP].sfn_sf;

1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
		LOG_D(MAC, "Filling UCI ACK/NAK information, cce_idx %d\n",
		      dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx);
		// Program PUCCH1a for ACK/NAK
		// Program ACK/NAK for Msg4 PDSCH
		fill_nfapi_uci_acknak(module_idP,
				      CC_idP,
				      ra->rnti,
				      (frameP * 10) + subframeP,
				      dl_config_pdu->dci_dl_pdu.
				      dci_dl_pdu_rel8.cce_idx);


		T(T_ENB_MAC_UE_DL_PDU_WITH_DATA, T_INT(module_idP),
		  T_INT(CC_idP), T_INT(ra->rnti), T_INT(frameP),
		  T_INT(subframeP), T_INT(0 /*harq_pid always 0? */ ),
		  T_BUFFER(&mac->UE_list.DLSCH_pdu[CC_idP][0][UE_id].
			   payload[0], ra->msg4_TBsize));

		if (opt_enabled == 1) {
		    trace_pdu(1,
			      (uint8_t *) mac->
			      UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)
							   UE_id].payload
			      [0], rrc_sdu_length, UE_id, 3,
			      UE_RNTI(module_idP, UE_id), mac->frame,
			      mac->subframe, 0, 0);
		    LOG_D(OPT,
			  "[eNB %d][DLSCH] CC_id %d Frame %d trace pdu for rnti %x with size %d\n",
			  module_idP, CC_idP, frameP, UE_RNTI(module_idP,
							      UE_id),
			  rrc_sdu_length);
		}
Xu Bo's avatar
Xu Bo committed
1425
#ifdef UE_EXPANSION
1426
        set_dl_ue_select(CC_idP, SCH_DL_MSG4, 4, UE_id, ra->rnti);
Xu Bo's avatar
Xu Bo committed
1427
#endif
1428
1429
1430
	    }			// CCE Allocation feasible
	}			// msg4 frame/subframe
    }				// else rach_resource_type
1431
1432
}

1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
void
check_Msg4_retransmission(module_id_t module_idP, int CC_idP,
			  frame_t frameP, sub_frame_t subframeP, RA_t * ra)
{

    eNB_MAC_INST *mac = RC.mac[module_idP];
    COMMON_channels_t *cc = mac->common_channels;
    int UE_id = -1;
    uint8_t *vrb_map;
    int first_rb;
    int N_RB_DL;
    nfapi_dl_config_request_pdu_t *dl_config_pdu;
    UE_list_t *UE_list = &mac->UE_list;
1446
1447
    nfapi_dl_config_request_t *dl_req;
    nfapi_dl_config_request_body_t *dl_req_body;
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492

    int round;
    /*
       #ifdef Rel14
       COMMON_channels_t               *cc  = mac->common_channels;

       int rmax            = 0;
       int rep             = 0; 
       int reps            = 0;

       first_rb        = 0;
       struct PRACH_ConfigSIB_v1310 *ext4_prach;
       PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
       PRACH_ParametersCE_r13_t *p[4];

       if (cc[CC_idP].radioResourceConfigCommon_BR) {

       ext4_prach                 = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
       prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;

       switch (prach_ParametersListCE_r13->list.count) {
       case 4:
       p[3]=prach_ParametersListCE_r13->list.array[3];
       case 3:
       p[2]=prach_ParametersListCE_r13->list.array[2];
       case 2:
       p[1]=prach_ParametersListCE_r13->list.array[1];
       case 1:
       p[0]=prach_ParametersListCE_r13->list.array[0];
       default:
       AssertFatal(1==0,"Illegal count for prach_ParametersListCE_r13 %d\n",prach_ParametersListCE_r13->list.count);
       }
       }
       #endif
     */

    // check HARQ status and retransmit if necessary


    UE_id = find_UE_id(module_idP, ra->rnti);
    AssertFatal(UE_id >= 0, "Can't find UE for t-crnti\n");

    round = UE_list->UE_sched_ctrl[UE_id].round[CC_idP][ra->harq_pid];
    vrb_map = cc[CC_idP].vrb_map;

1493
1494
1495
    dl_req = &mac->DL_req[CC_idP];
    dl_req_body = &dl_req->dl_config_request_body;
    dl_config_pdu = &dl_req_body->dl_config_pdu_list[dl_req_body->number_pdu];
1496
1497
1498
1499
1500
1501
1502
1503
    N_RB_DL = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);

    LOG_D(MAC,
	  "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Checking if Msg4 for harq_pid %d was acknowledged (round %d)\n",
	  module_idP, CC_idP, frameP, subframeP, ra->harq_pid, round);

    if (round != 8) {

1504
#ifdef Rel14
1505
1506
1507
1508
	if (ra->rach_resource_type > 0) {
	    AssertFatal(1 == 0,
			"Msg4 Retransmissions not handled yet for BL/CE UEs\n");
	} else
1509
#endif
1510
1511
1512
1513
1514
1515
1516
	{
	    if ((ra->Msg4_frame == frameP)
		&& (ra->Msg4_subframe == subframeP)) {

		//ra->wait_ack_Msg4++;
		// we have to schedule a retransmission

1517
1518
                dl_req->sfn_sf = frameP<<4 | subframeP;

1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
		first_rb = 0;
		vrb_map[first_rb] = 1;
		vrb_map[first_rb + 1] = 1;
		vrb_map[first_rb + 2] = 1;
		vrb_map[first_rb + 3] = 1;

		fill_nfapi_dl_dci_1A(dl_config_pdu, 4,	// aggregation_level
				     ra->rnti,	// rnti
				     1,	// rnti_type, CRNTI
				     ra->harq_pid,	// harq_process
				     1,	// tpc, none
				     getRIV(N_RB_DL, first_rb, 4),	// resource_block_coding
				     ra->msg4_mcs,	// mcs
				     1,	// ndi
				     round & 3,	// rv
				     0);	// vrb_flag

		if (!CCE_allocation_infeasible
		    (module_idP, CC_idP, 1, subframeP,
		     dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.
		     aggregation_level, ra->rnti)) {
1540
1541
1542
		    dl_req_body->number_dci++;
		    dl_req_body->number_pdu++;
                    dl_req_body->tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;
1543
1544
1545
1546
1547

		    LOG_D(MAC,
			  "msg4 retransmission for rnti %x (round %d) fsf %d/%d\n",
			  ra->rnti, round, frameP, subframeP);
		    // DLSCH Config
1548
1549
                    //DJP - fix this pdu_index = -1
		    fill_nfapi_dlsch_config(mac, dl_req_body, ra->msg4_TBsize,
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
					    -1
					    /* retransmission, no pdu_index */
					    , ra->rnti, 2,	// resource_allocation_type : format 1A/1B/1D
					    0,	// virtual_resource_block_assignment_flag : localized
					    getRIV(N_RB_DL, first_rb, 4),	// resource_block_coding : RIV, 4 PRB
					    2,	// modulation: QPSK
					    round & 3,	// redundancy version
					    1,	// transport_blocks
					    0,	// transport_block_to_codeword_swap_flag (0)
					    (cc->p_eNB == 1) ? 0 : 1,	// transmission_scheme
					    1,	// number of layers
					    1,	// number of subbands
					    //0,                         // codebook index 
					    1,	// ue_category_capacity
					    4,	// pa: 0 dB
					    0,	// delta_power_offset_index
					    0,	// ngap
					    1,	// NPRB = 3 like in DCI
					    (cc->p_eNB == 1) ? 1 : 2,	// transmission mode
					    1,	// num_bf_prb_per_subband
					    1);	// num_bf_vector
Xu Bo's avatar
Xu Bo committed
1571
#ifdef UE_EXPANSION
1572
        set_dl_ue_select(CC_idP, SCH_DL_MSG4, 4, UE_id, ra->rnti);
Xu Bo's avatar
Xu Bo committed
1573
#endif
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
		} else
		    LOG_D(MAC,
			  "msg4 retransmission for rnti %x (round %d) fsf %d/%d CCE allocation failed!\n",
			  ra->rnti, round, frameP, subframeP);


		// Program PUCCH1a for ACK/NAK


		fill_nfapi_uci_acknak(module_idP, CC_idP,
				      ra->rnti,
				      (frameP * 10) + subframeP,
				      dl_config_pdu->dci_dl_pdu.
				      dci_dl_pdu_rel8.cce_idx);

		// prepare frame for retransmission
jftt_wangshanshan's avatar
jftt_wangshanshan committed
1590
		get_retransmission_timing(mac->common_channels[CC_idP].tdd_Config,&ra->Msg4_frame,&ra->Msg4_subframe);
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603

		LOG_W(MAC,
		      "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Msg4 not acknowledged, adding ue specific dci (rnti %x) for RA (Msg4 Retransmission round %d in %d.%d)\n",
		      module_idP, CC_idP, frameP, subframeP, ra->rnti,
		      round, ra->Msg4_frame, ra->Msg4_subframe);

	    }			// Msg4 frame/subframe
	}			// regular LTE case
    } else {
	LOG_D(MAC,
	      "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d : Msg4 acknowledged\n",
	      module_idP, CC_idP, frameP, subframeP);
	ra->state = IDLE;
Cedric Roux's avatar
Cedric Roux committed
1604
        LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d: state:IDLE\n", module_idP, frameP, subframeP);
1605
1606
1607
1608
	UE_id = find_UE_id(module_idP, ra->rnti);
	DevAssert(UE_id != -1);
	mac->UE_list.UE_template[UE_PCCID(module_idP, UE_id)][UE_id].
	    configured = TRUE;
1609
        cancel_ra_proc(module_idP, CC_idP, frameP, ra->rnti);
1610
    }
1611
}
1612

1613
1614
1615
void
schedule_RA(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP)
{
1616

1617
1618
1619
1620
1621
    int CC_id;
    eNB_MAC_INST *mac = RC.mac[module_idP];
    COMMON_channels_t *cc = mac->common_channels;
    RA_t *ra;
    uint8_t i;
1622

1623
    start_meas(&mac->schedule_ra);
1624
1625


1626
1627
1628
1629
    for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
	// skip UL component carriers if TDD
	if (is_UL_sf(&cc[CC_id], subframeP) == 1)
	    continue;
1630
1631


1632
	for (i = 0; i < NB_RA_PROC_MAX; i++) {
1633

1634
	    ra = (RA_t *) & cc[CC_id].ra[i];
1635

1636
1637
            //LOG_D(MAC,"RA[state:%d]\n",ra->state);

1638
1639
	    if (ra->state == MSG2)
		generate_Msg2(module_idP, CC_id, frameP, subframeP, ra);
jftt_wangshanshan's avatar
jftt_wangshanshan committed
1640
	    else if (ra->state == MSG4 && ra->Msg4_frame == frameP && ra->Msg4_subframe == subframeP )
1641
1642
1643
1644
		generate_Msg4(module_idP, CC_id, frameP, subframeP, ra);
	    else if (ra->state == WAITMSG4ACK)
		check_Msg4_retransmission(module_idP, CC_id, frameP,
					  subframeP, ra);
1645

1646
1647
	}			// for i=0 .. N_RA_PROC-1 
    }				// CC_id
1648