eNB_scheduler_ulsch.c 57.2 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
  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
24
  OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr
nikaeinn's avatar
nikaeinn committed
25

ghaddab's avatar
ghaddab committed
26
  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
nikaeinn's avatar
nikaeinn committed
27

gauthier's avatar
   
gauthier committed
28
 *******************************************************************************/
nikaeinn's avatar
nikaeinn committed
29
30
31

/*! \file eNB_scheduler_ulsch.c
 * \brief eNB procedures for the ULSCH transport channel
32
33
34
 * \author Navid Nikaein and Raymond Knopp
 * \date 2010 - 2014
 * \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
 * @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 "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

66
#define ENABLE_MAC_PAYLOAD_DEBUG
67
68
69
70
71
#define DEBUG_eNB_SCHEDULER 1

// This table holds the allowable PRB sizes for ULSCH transmissions
uint8_t rb_table[33] = {1,2,3,4,5,6,8,9,10,12,15,16,18,20,24,25,27,30,32,36,40,45,48,50,54,60,72,75,80,81,90,96,100};

gauthier's avatar
gauthier committed
72
void rx_sdu(
73
74
75
  const module_id_t enb_mod_idP,
  const int         CC_idP,
  const frame_t     frameP,
gauthier's avatar
gauthier committed
76
  const sub_frame_t subframeP,
77
78
79
80
81
  const rnti_t      rntiP,
  uint8_t          *sduP,
  const uint16_t    sdu_lenP,
  const int         harq_pidP,
  uint8_t          *msg3_flagP)
82
83
84
85
86
87
88
89
90
{

  unsigned char  rx_ces[MAX_NUM_CE],num_ce,num_sdu,i,*payload_ptr;
  unsigned char  rx_lcids[NB_RB_MAX];
  unsigned short rx_lengths[NB_RB_MAX];
  int    UE_id = find_UE_id(enb_mod_idP,rntiP);
  int ii,j;
  eNB_MAC_INST *eNB = &eNB_mac_inst[enb_mod_idP];
  UE_list_t *UE_list= &eNB->UE_list;
91
  int crnti_rx=0;
92
  int old_buffer_info;
93
94
95
96

  start_meas(&eNB->rx_ulsch_sdu);

  if ((UE_id >  NUMBER_OF_UE_MAX) || (UE_id == -1)  )
97
98
99
    for(ii=0; ii<NB_RB_MAX; ii++) {
      rx_lengths[ii] = 0;
    }
100

gauthier's avatar
gauthier committed
101
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RX_SDU,1);
gauthier's avatar
gauthier committed
102
  if (opt_enabled == 1) {
nikaeinn's avatar
nikaeinn committed
103
    trace_pdu(0, sduP,sdu_lenP, 0, 3, rntiP,subframeP, 0,0);
gauthier's avatar
gauthier committed
104
    LOG_D(OPT,"[eNB %d][ULSCH] Frame %d  rnti %x  with size %d\n",
nikaeinn's avatar
nikaeinn committed
105
    		  enb_mod_idP, frameP, rntiP, sdu_lenP);
gauthier's avatar
gauthier committed
106
  }
107

108
  LOG_D(MAC,"[eNB %d] CC_id %d Received ULSCH sdu from PHY (rnti %x, UE_id %d), parsing header\n",enb_mod_idP,CC_idP,rntiP,UE_id);
109

gauthier's avatar
gauthier committed
110
111
112
113
114
  if (sduP==NULL) { // we've got an error after N rounds
    UE_list->UE_sched_ctrl[UE_id].ul_scheduled       &= (~(1<<harq_pidP));
    return;
  }

115
  if (UE_id!=-1) {
116
    UE_list->UE_sched_ctrl[UE_id].ul_inactivity_timer=0;
117
118
119
    UE_list->UE_sched_ctrl[UE_id].ul_failure_timer   =0;
    UE_list->UE_sched_ctrl[UE_id].ul_scheduled       &= (~(1<<harq_pidP));

Florian Kaltenberger's avatar
Florian Kaltenberger committed
120
121
122
123
    if (UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync > 0) {
      UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync=0;
      mac_eNB_rrc_ul_in_sync(enb_mod_idP,CC_idP,frameP,subframeP,UE_RNTI(enb_mod_idP,UE_id));
    }
124
  }
gauthier's avatar
gauthier committed
125
126


127
  payload_ptr = parse_ulsch_header(sduP,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,sdu_lenP);
Cédric Roux's avatar
Cédric Roux committed
128
129
130
131

  T(T_ENB_MAC_UE_UL_PDU, T_INT(enb_mod_idP), T_INT(CC_idP), T_INT(rntiP), T_INT(frameP), T_INT(subframeP),
    T_INT(harq_pidP), T_INT(sdu_lenP), T_INT(num_ce), T_INT(num_sdu));

132
133
134
  eNB->eNB_stats[CC_idP].ulsch_bytes_rx=sdu_lenP;
  eNB->eNB_stats[CC_idP].total_ulsch_bytes_rx+=sdu_lenP;
  eNB->eNB_stats[CC_idP].total_ulsch_pdus_rx+=1;
135
136
137
  // control element
  for (i=0; i<num_ce; i++) {

Cédric Roux's avatar
Cédric Roux committed
138
139
140
    T(T_ENB_MAC_UE_UL_CE, T_INT(enb_mod_idP), T_INT(CC_idP), T_INT(rntiP), T_INT(frameP), T_INT(subframeP),
      T_INT(rx_ces[i]));

141
142
143
144
    switch (rx_ces[i]) { // implement and process BSR + CRNTI +
    case POWER_HEADROOM:
      if (UE_id != -1) {
        UE_list->UE_template[CC_idP][UE_id].phr_info =  (payload_ptr[0] & 0x3f) - PHR_MAPPING_OFFSET;
145
146
        LOG_D(MAC, "[eNB %d] CC_id %d MAC CE_LCID %d : Received PHR PH = %d (db)\n",
              enb_mod_idP, CC_idP, rx_ces[i], UE_list->UE_template[CC_idP][UE_id].phr_info);
147
148
        UE_list->UE_template[CC_idP][UE_id].phr_info_configured=1;
      }
149
      UE_list->UE_sched_ctrl[UE_id].phr_received = 1;
150
151
152
153
154

      payload_ptr+=sizeof(POWER_HEADROOM_CMD);
      break;

    case CRNTI:
155
      UE_id = find_UE_id(enb_mod_idP,(((uint16_t)payload_ptr[0])<<8) + payload_ptr[1]);
156
157
      LOG_I(MAC, "[eNB %d] Frame %d, Subframe %d CC_id %d MAC CE_LCID %d (ce %d/%d): CRNTI %x (UE_id %d) in Msg3\n",
	    frameP,subframeP,enb_mod_idP, CC_idP, rx_ces[i], i,num_ce,(((uint16_t)payload_ptr[0])<<8) + payload_ptr[1],UE_id);
Florian Kaltenberger's avatar
Florian Kaltenberger committed
158
159
160
161
162
163
164
165
      if (UE_id!=-1) {
	UE_list->UE_sched_ctrl[UE_id].ul_inactivity_timer=0;
	UE_list->UE_sched_ctrl[UE_id].ul_failure_timer=0;
	if (UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync > 0) {
	  UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync=0;
	  mac_eNB_rrc_ul_in_sync(enb_mod_idP,CC_idP,frameP,subframeP,(((uint16_t)payload_ptr[0])<<8) + payload_ptr[1]);
	}
      }
166
      crnti_rx=1;
roux's avatar
roux committed
167
      payload_ptr+=2;
168

roux's avatar
roux committed
169
      if (msg3_flagP != NULL) {
170
	*msg3_flagP = 0;
roux's avatar
roux committed
171
      }
172
173
174
175
      break;

    case TRUNCATED_BSR:
    case SHORT_BSR: {
176
177
178
179
180
181
      uint8_t lcgid;
      lcgid = (payload_ptr[0] >> 6);

      LOG_D(MAC, "[eNB %d] CC_id %d MAC CE_LCID %d : Received short BSR LCGID = %u bsr = %d\n",
	    enb_mod_idP, CC_idP, rx_ces[i], lcgid, payload_ptr[0] & 0x3f);

182
183
184
      if (crnti_rx==1)
	LOG_I(MAC, "[eNB %d] CC_id %d MAC CE_LCID %d : Received short BSR LCGID = %u bsr = %d\n",
	      enb_mod_idP, CC_idP, rx_ces[i], lcgid, payload_ptr[0] & 0x3f);
185
      if (UE_id  != -1) {
186

187
188
        UE_list->UE_template[CC_idP][UE_id].bsr_info[lcgid] = (payload_ptr[0] & 0x3f);

189
	// update buffer info
190
	
191
192
	UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[lcgid]=BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].bsr_info[lcgid]];

193
	UE_list->UE_template[CC_idP][UE_id].ul_total_buffer= UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[lcgid];
194
195

	PHY_vars_eNB_g[enb_mod_idP][CC_idP]->pusch_stats_bsr[UE_id][(frameP*10)+subframeP] = (payload_ptr[0] & 0x3f);
196
197
	if (UE_id == UE_list->head)
	  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_BSR,PHY_vars_eNB_g[enb_mod_idP][CC_idP]->pusch_stats_bsr[UE_id][(frameP*10)+subframeP]);	
198
        if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[lcgid] == 0 ) {
199
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[lcgid]=frameP;
200
        }
gauthier's avatar
gauthier committed
201
202
203
204
	if (mac_eNB_get_rrc_status(enb_mod_idP,UE_RNTI(enb_mod_idP,UE_id)) < RRC_CONNECTED)
	  LOG_I(MAC, "[eNB %d] CC_id %d MAC CE_LCID %d : ul_total_buffer = %d (lcg increment %d)\n",
		enb_mod_idP, CC_idP, rx_ces[i], UE_list->UE_template[CC_idP][UE_id].ul_total_buffer,
		UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[lcgid]);	
205
      }
206
      else {
207

208
      }
209
      payload_ptr += 1;//sizeof(SHORT_BSR); // fixme
knopp's avatar
   
knopp committed
210
    }
211
    break;
gauthier's avatar
   
gauthier committed
212

213
214
215
216
217
218
219
220
    case LONG_BSR:
      if (UE_id  != -1) {
        UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0] = ((payload_ptr[0] & 0xFC) >> 2);
        UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1] =
          ((payload_ptr[0] & 0x03) << 4) | ((payload_ptr[1] & 0xF0) >> 4);
        UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2] =
          ((payload_ptr[1] & 0x0F) << 2) | ((payload_ptr[2] & 0xC0) >> 6);
        UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3] = (payload_ptr[2] & 0x3F);
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255

	// update buffer info
	old_buffer_info = UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID0];
	UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID0]=BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0]];

	UE_list->UE_template[CC_idP][UE_id].ul_total_buffer+= UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID0];
	if (UE_list->UE_template[CC_idP][UE_id].ul_total_buffer >= old_buffer_info)
	  UE_list->UE_template[CC_idP][UE_id].ul_total_buffer -= old_buffer_info;
	else
	  UE_list->UE_template[CC_idP][UE_id].ul_total_buffer = 0;

	old_buffer_info = UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID1];
	UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID1]=BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1]];
	UE_list->UE_template[CC_idP][UE_id].ul_total_buffer+= UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID1];
	if (UE_list->UE_template[CC_idP][UE_id].ul_total_buffer >= old_buffer_info)
	  UE_list->UE_template[CC_idP][UE_id].ul_total_buffer -= old_buffer_info;
	else
	  UE_list->UE_template[CC_idP][UE_id].ul_total_buffer = 0;

	old_buffer_info = UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID2];
	UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID2]=BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2]];
	UE_list->UE_template[CC_idP][UE_id].ul_total_buffer+= UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID2];
	if (UE_list->UE_template[CC_idP][UE_id].ul_total_buffer >= old_buffer_info)
	  UE_list->UE_template[CC_idP][UE_id].ul_total_buffer -= old_buffer_info;
	else
	  UE_list->UE_template[CC_idP][UE_id].ul_total_buffer = 0;

	old_buffer_info = UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID3];
	UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID3]=BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3]];
	UE_list->UE_template[CC_idP][UE_id].ul_total_buffer+= UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID3];
	if (UE_list->UE_template[CC_idP][UE_id].ul_total_buffer >= old_buffer_info)
	  UE_list->UE_template[CC_idP][UE_id].ul_total_buffer -= old_buffer_info;
	else
	  UE_list->UE_template[CC_idP][UE_id].ul_total_buffer = 0;

256
        LOG_D(MAC, "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR LCGID0 = %u LCGID1 = "
257
258
259
260
261
262
263
264
265
              "%u LCGID2 = %u LCGID3 = %u\n",
              enb_mod_idP, CC_idP,
              rx_ces[i],
              UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0],
              UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1],
              UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2],
              UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3]);
      if (crnti_rx==1)
        LOG_I(MAC, "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR LCGID0 = %u LCGID1 = "
266
              "%u LCGID2 = %u LCGID3 = %u\n",
267
              enb_mod_idP, CC_idP,
268
269
270
271
272
273
              rx_ces[i],
              UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0],
              UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1],
              UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2],
              UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3]);

274
        if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0] == 0 ) {
275
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID0]=0;
276
        } else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID0] == 0) {
277
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID0]=frameP;
278
        }
279

280
        if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1] == 0 ) {
281
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID1]=0;
282
        } else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID1] == 0) {
283
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID1]=frameP;
284
        }
285

286
        if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2] == 0 ) {
287
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID2]=0;
288
        } else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID2] == 0) {
289
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID2]=frameP;
290
        }
291

292
        if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3] == 0 ) {
293
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID3]= 0;
294
        } else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID3] == 0) {
295
296
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID3]=frameP;

297
        }
298
299
300
301
302
303
      }

      payload_ptr += 3;////sizeof(LONG_BSR);
      break;

    default:
304
      LOG_E(MAC, "[eNB %d] CC_id %d Received unknown MAC header (0x%02x)\n", enb_mod_idP, CC_idP, rx_ces[i]);
305
306
307
308
309
310
311
      break;
    }
  }

  for (i=0; i<num_sdu; i++) {
    LOG_D(MAC,"SDU Number %d MAC Subheader SDU_LCID %d, length %d\n",i,rx_lcids[i],rx_lengths[i]);

Cédric Roux's avatar
Cédric Roux committed
312
313
314
    T(T_ENB_MAC_UE_UL_SDU, T_INT(enb_mod_idP), T_INT(CC_idP), T_INT(rntiP), T_INT(frameP), T_INT(subframeP),
      T_INT(rx_lcids[i]), T_INT(rx_lengths[i]));

315
316
    switch (rx_lcids[i]) {
    case CCCH :
Cédric Roux's avatar
Cédric Roux committed
317
318
319
320
321
322
      if (rx_lengths[i] > CCCH_PAYLOAD_SIZE_MAX) {
        LOG_E(MAC, "[eNB %d/%d] frame %d received CCCH of size %d (too big, maximum allowed is %d), dropping packet\n",
              enb_mod_idP, CC_idP, frameP, rx_lengths[i], CCCH_PAYLOAD_SIZE_MAX);
        break;
      }

323
324
      LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, Received CCCH:  %x.%x.%x.%x.%x.%x, Terminating RA procedure for UE rnti %x\n",
            enb_mod_idP,CC_idP,frameP,
325
            payload_ptr[0],payload_ptr[1],payload_ptr[2],payload_ptr[3],payload_ptr[4], payload_ptr[5], rntiP);
326
327
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_TERMINATE_RA_PROC,1);
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_TERMINATE_RA_PROC,0);
328
      for (ii=0; ii<NB_RA_PROC_MAX; ii++) {
329
        LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Checking proc %d : rnti (%x, %x), active %d\n",
330
              enb_mod_idP, CC_idP, ii,
331
332
              eNB->common_channels[CC_idP].RA_template[ii].rnti, rntiP,
              eNB->common_channels[CC_idP].RA_template[ii].RA_active);
gauthier's avatar
   
gauthier committed
333

334
335
        if ((eNB->common_channels[CC_idP].RA_template[ii].rnti==rntiP) &&
            (eNB->common_channels[CC_idP].RA_template[ii].RA_active==TRUE)) {
gauthier's avatar
   
gauthier committed
336

337
          //payload_ptr = parse_ulsch_header(msg3,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,msg3_len);
gauthier's avatar
   
gauthier committed
338

339
340
          if (UE_id < 0) {
            memcpy(&eNB->common_channels[CC_idP].RA_template[ii].cont_res_id[0],payload_ptr,6);
knopp's avatar
knopp committed
341
            LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d CCCH: Received Msg3: length %d, offset %d\n",
342
                  enb_mod_idP,CC_idP,frameP,rx_lengths[i],payload_ptr-sduP);
gauthier's avatar
   
gauthier committed
343

344
            if ((UE_id=add_new_ue(enb_mod_idP,CC_idP,eNB->common_channels[CC_idP].RA_template[ii].rnti,harq_pidP)) == -1 ) {
345
              mac_xface->macphy_exit("[MAC][eNB] Max user count reached\n");
kaltenbe's avatar
kaltenbe committed
346
	      // kill RA procedure
347
            } else
348
349
              LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Added user with rnti %x => UE %d\n",
                    enb_mod_idP,CC_idP,frameP,eNB->common_channels[CC_idP].RA_template[ii].rnti,UE_id);
350
          } else {
knopp's avatar
knopp committed
351
            LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d CCCH: Received Msg3 from already registered UE %d: length %d, offset %d\n",
352
                  enb_mod_idP,CC_idP,frameP,UE_id,rx_lengths[i],payload_ptr-sduP);
kaltenbe's avatar
kaltenbe committed
353
	    // kill RA procedure
354
          }
gauthier's avatar
   
gauthier committed
355

356
          if (Is_rrc_registered == 1)
357
358
            mac_rrc_data_ind(
              enb_mod_idP,
359
              CC_idP,
gauthier's avatar
gauthier committed
360
              frameP,subframeP,
361
362
363
              rntiP,
              CCCH,
              (uint8_t*)payload_ptr,
364
              rx_lengths[i],
365
366
367
              ENB_FLAG_YES,
              enb_mod_idP,
              0);
gauthier's avatar
   
gauthier committed
368
369


370
371
372
          if (num_ce >0) {  // handle msg3 which is not RRCConnectionRequest
            //  process_ra_message(msg3,num_ce,rx_lcids,rx_ces);
          }
gauthier's avatar
   
gauthier committed
373

374
375
          eNB->common_channels[CC_idP].RA_template[ii].generate_Msg4 = 1;
          eNB->common_channels[CC_idP].RA_template[ii].wait_ack_Msg4 = 0;
gauthier's avatar
   
gauthier committed
376

377
378
        } // if process is active
      } // loop on RA processes
gauthier's avatar
   
gauthier committed
379

380
      break;
gauthier's avatar
   
gauthier committed
381

382
383
384
    case  DCCH :
    case DCCH1 :
      //      if(eNB_mac_inst[module_idP][CC_idP].Dcch_lchan[UE_id].Active==1){
385
      
gauthier's avatar
   
gauthier committed
386

knopp's avatar
   
knopp committed
387
#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
388
      LOG_T(MAC,"offset: %d\n",(unsigned char)((unsigned char*)payload_ptr-sduP));
389
      
390
      for (j=0; j<32; j++) {
391
        LOG_T(MAC,"%x ",payload_ptr[j]);
392
      }
393
394

      LOG_T(MAC,"\n");
knopp's avatar
   
knopp committed
395
#endif
gauthier's avatar
   
gauthier committed
396

roux's avatar
roux committed
397
      if (UE_id != -1) {
398
399
	// adjust buffer occupancy of the correponding logical channel group
	if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] >= rx_lengths[i])
400
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] -= rx_lengths[i];
401
402
403
	else
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] = 0;

roux's avatar
roux committed
404
405
406
407
          LOG_D(MAC,"[eNB %d] CC_id %d Frame %d : ULSCH -> UL-DCCH, received %d bytes form UE %d on LCID %d \n",
                enb_mod_idP,CC_idP,frameP, rx_lengths[i], UE_id, rx_lcids[i]);

          mac_rlc_data_ind(
408
409
410
411
412
413
414
415
416
417
418
			   enb_mod_idP,
			   rntiP,
			   enb_mod_idP,
			   frameP,
			   ENB_FLAG_YES,
			   MBMS_FLAG_NO,
			   rx_lcids[i],
			   (char *)payload_ptr,
			   rx_lengths[i],
			   1,
			   NULL);//(unsigned int*)crc_status);
roux's avatar
roux committed
419
420
421
          UE_list->eNB_UE_stats[CC_idP][UE_id].num_pdu_rx[rx_lcids[i]]+=1;
          UE_list->eNB_UE_stats[CC_idP][UE_id].num_bytes_rx[rx_lcids[i]]+=rx_lengths[i];
      } /* UE_id != -1 */
422
423
424
425
426
427

      //      }
      break;

    case DTCH: // default DRB
      //      if(eNB_mac_inst[module_idP][CC_idP].Dcch_lchan[UE_id].Active==1){
gauthier's avatar
   
gauthier committed
428

knopp's avatar
   
knopp committed
429
#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
430
      LOG_T(MAC,"offset: %d\n",(unsigned char)((unsigned char*)payload_ptr-sduP));
gauthier's avatar
   
gauthier committed
431

432
      for (j=0; j<32; j++) {
433
        LOG_T(MAC,"%x ",payload_ptr[j]);
434
      }
gauthier's avatar
   
gauthier committed
435

436
437
438
      LOG_T(MAC,"\n");
#endif

439
440
      LOG_D(MAC,"[eNB %d] CC_id %d Frame %d : ULSCH -> UL-DTCH, received %d bytes from UE %d for lcid %d\n",
            enb_mod_idP,CC_idP,frameP, rx_lengths[i], UE_id,rx_lcids[i]);
441

roux's avatar
roux committed
442
      if (UE_id != -1) {
443
444
445
446
447
448
449
	// adjust buffer occupancy of the correponding logical channel group
	LOG_D(MAC,"[eNB %d] CC_id %d Frame %d : ULSCH -> UL-DTCH, received %d bytes from UE %d for lcid %d, removing from LCGID %d, %d\n",
	      enb_mod_idP,CC_idP,frameP, rx_lengths[i], UE_id,rx_lcids[i],
	      UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]],
	      UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]]);

	if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] >= rx_lengths[i])
450
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] -= rx_lengths[i];
451
452
453
	else
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] = 0;

roux's avatar
roux committed
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
        if ((rx_lengths[i] <SCH_PAYLOAD_SIZE_MAX) &&  (rx_lengths[i] > 0) ) {   // MAX SIZE OF transport block
          mac_rlc_data_ind(
            enb_mod_idP,
            rntiP,
            enb_mod_idP,
            frameP,
            ENB_FLAG_YES,
            MBMS_FLAG_NO,
            DTCH,
            (char *)payload_ptr,
            rx_lengths[i],
            1,
            NULL);//(unsigned int*)crc_status);
          UE_list->eNB_UE_stats[CC_idP][UE_id].num_pdu_rx[rx_lcids[i]]+=1;
          UE_list->eNB_UE_stats[CC_idP][UE_id].num_bytes_rx[rx_lcids[i]]+=rx_lengths[i];
        }
      } /* UE_id != -1 */
471
472
473
474
475

      //      }
      break;

    default :  //if (rx_lcids[i] >= DTCH) {
roux's avatar
roux committed
476
477
      if (UE_id != -1)
        UE_list->eNB_UE_stats[CC_idP][UE_id].num_errors_rx+=1;
478
479
      LOG_E(MAC,"[eNB %d] CC_id %d Frame %d : received unsupported or unknown LCID %d from UE %d ",
            enb_mod_idP, CC_idP, frameP, rx_lcids[i], UE_id);
480
      break;
knopp's avatar
   
knopp committed
481
    }
482
483
484
485
486
487

    payload_ptr+=rx_lengths[i];
  }

  /* NN--> FK: we could either check the payload, or use a phy helper to detect a false msg3 */
  if ((num_sdu == 0) && (num_ce==0)) {
roux's avatar
roux committed
488
489
    if (UE_id != -1)
      UE_list->eNB_UE_stats[CC_idP][UE_id].total_num_errors_rx+=1;
490
491
492

    if (msg3_flagP != NULL) {
      if( *msg3_flagP == 1 ) {
493
        LOG_N(MAC,"[eNB %d] CC_id %d frame %d : false msg3 detection: signal phy to canceling RA and remove the UE\n", enb_mod_idP, CC_idP, frameP);
494
495
        *msg3_flagP=0;
      }
496
    }
497
  } else {
roux's avatar
roux committed
498
499
500
501
502
    if (UE_id != -1) {
      UE_list->eNB_UE_stats[CC_idP][UE_id].pdu_bytes_rx=sdu_lenP;
      UE_list->eNB_UE_stats[CC_idP][UE_id].total_pdu_bytes_rx+=sdu_lenP;
      UE_list->eNB_UE_stats[CC_idP][UE_id].total_num_pdus_rx+=1;
    }
503
504
  }

gauthier's avatar
gauthier committed
505
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RX_SDU,0);
506
  stop_meas(&eNB->rx_ulsch_sdu);
knopp's avatar
   
knopp committed
507
508
509
}


510
511
uint32_t bytes_to_bsr_index(int32_t nbytes)
{
512

513
  uint32_t i=0;
514

515
  if (nbytes<0) {
516
    return(0);
517
  }
518

519
520
521
522
523
524
  while ((i<BSR_TABLE_SIZE)&&
         (BSR_TABLE[i]<=nbytes)) {
    i++;
  }

  return(i-1);
525
526
}

527
528
void add_ue_ulsch_info(module_id_t module_idP, int CC_id, int UE_id, sub_frame_t subframeP, UE_ULSCH_STATUS status)
{
529

530
531
532
  eNB_ulsch_info[module_idP][CC_id][UE_id].rnti             = UE_RNTI(module_idP,UE_id);
  eNB_ulsch_info[module_idP][CC_id][UE_id].subframe         = subframeP;
  eNB_ulsch_info[module_idP][CC_id][UE_id].status           = status;
533

534
  eNB_ulsch_info[module_idP][CC_id][UE_id].serving_num++;
535
536
537
538

}

unsigned char *parse_ulsch_header(unsigned char *mac_header,
gauthier's avatar
   
gauthier committed
539
540
541
542
543
                                  unsigned char *num_ce,
                                  unsigned char *num_sdu,
                                  unsigned char *rx_ces,
                                  unsigned char *rx_lcids,
                                  unsigned short *rx_lengths,
544
545
546
547
548
549
550
551
552
                                  unsigned short tb_length)
{

  unsigned char not_done=1,num_ces=0,num_sdus=0,lcid,num_sdu_cnt;
  unsigned char *mac_header_ptr = mac_header;
  unsigned short length, ce_len=0;

  while (not_done==1) {

553
    if (((SCH_SUBHEADER_FIXED*)mac_header_ptr)->E == 0) {
554
      not_done = 0;
555
    }
556
557
558
559
560
561
562
563

    lcid = ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID;

    if (lcid < EXTENDED_POWER_HEADROOM) {
      if (not_done==0) { // last MAC SDU, length is implicit
        mac_header_ptr++;
        length = tb_length-(mac_header_ptr-mac_header)-ce_len;

564
        for (num_sdu_cnt=0; num_sdu_cnt < num_sdus ; num_sdu_cnt++) {
565
          length -= rx_lengths[num_sdu_cnt];
566
        }
567
568
569
570
571
572
573
      } else {
        if (((SCH_SUBHEADER_SHORT *)mac_header_ptr)->F == 0) {
          length = ((SCH_SUBHEADER_SHORT *)mac_header_ptr)->L;
          mac_header_ptr += 2;//sizeof(SCH_SUBHEADER_SHORT);
        } else { // F = 1
          length = ((((SCH_SUBHEADER_LONG *)mac_header_ptr)->L_MSB & 0x7f ) << 8 ) | (((SCH_SUBHEADER_LONG *)mac_header_ptr)->L_LSB & 0xff);
          mac_header_ptr += 3;//sizeof(SCH_SUBHEADER_LONG);
gauthier's avatar
   
gauthier committed
574
        }
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
      }

      LOG_D(MAC,"[eNB] sdu %d lcid %d tb_length %d length %d (offset now %d)\n",
            num_sdus,lcid,tb_length, length,mac_header_ptr-mac_header);
      rx_lcids[num_sdus] = lcid;
      rx_lengths[num_sdus] = length;
      num_sdus++;
    } else { // This is a control element subheader POWER_HEADROOM, BSR and CRNTI
      if (lcid == SHORT_PADDING) {
        mac_header_ptr++;
      } else {
        rx_ces[num_ces] = lcid;
        num_ces++;
        mac_header_ptr++;

590
        if (lcid==LONG_BSR) {
591
          ce_len+=3;
592
        } else if (lcid==CRNTI) {
593
          ce_len+=2;
594
        } else if ((lcid==POWER_HEADROOM) || (lcid==TRUNCATED_BSR)|| (lcid== SHORT_BSR)) {
595
          ce_len++;
596
        } else {
597
598
          LOG_E(MAC,"unknown CE %d \n", lcid);
          mac_xface->macphy_exit("unknown CE");
gauthier's avatar
   
gauthier committed
599
        }
600
      }
knopp's avatar
   
knopp committed
601
    }
602
  }
603

604
605
606
607
  *num_ce = num_ces;
  *num_sdu = num_sdus;

  return(mac_header_ptr);
608
609
610
}


611
612
613
614
615
616
void schedule_ulsch(module_id_t module_idP, 
		    frame_t frameP,
		    unsigned char cooperation_flag,
		    sub_frame_t subframeP, 
		    unsigned char sched_subframe) {

gauthier's avatar
   
gauthier committed
617
618


619
620
621
  uint16_t first_rb[MAX_NUM_CCs],i;
  int CC_id;
  eNB_MAC_INST *eNB=&eNB_mac_inst[module_idP];
gauthier's avatar
   
gauthier committed
622

623
  start_meas(&eNB->schedule_ulsch);
gauthier's avatar
   
gauthier committed
624
625


626
  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
gauthier's avatar
   
gauthier committed
627

628
    first_rb[CC_id] = 1;
gauthier's avatar
   
gauthier committed
629

630
631
632
633
    // UE data info;
    // check which UE has data to transmit
    // function to decide the scheduling
    // e.g. scheduling_rslt = Greedy(granted_UEs, nb_RB)
gauthier's avatar
   
gauthier committed
634

635
636
    // default function for default scheduling
    //
gauthier's avatar
   
gauthier committed
637

638
639
640
641
    // output of scheduling, the UE numbers in RBs, where it is in the code???
    // check if RA (Msg3) is active in this subframeP, if so skip the PRBs used for Msg3
    // Msg3 is using 1 PRB so we need to increase first_rb accordingly
    // not sure about the break (can there be more than 1 active RA procedure?)
gauthier's avatar
   
gauthier committed
642

643
644
645
646
    for (i=0; i<NB_RA_PROC_MAX; i++) {
      if ((eNB->common_channels[CC_id].RA_template[i].RA_active == TRUE) &&
          (eNB->common_channels[CC_id].RA_template[i].generate_rar == 0) &&
          (eNB->common_channels[CC_id].RA_template[i].Msg3_subframe == sched_subframe)) {
knopp's avatar
knopp committed
647
	//leave out first RB for PUCCH
648
649
650
        first_rb[CC_id]++;
        break;
      }
knopp's avatar
   
knopp committed
651
    }
knopp's avatar
knopp committed
652
653
654
655
656
657

    /*
    if (mac_xface->is_prach_subframe(&(mac_xface->lte_frame_parms),frameP,subframeP)) {
      first_rb[CC_id] = (mac_xface->get_prach_prb_offset(&(mac_xface->lte_frame_parms),
    */

658
  }
659

660
  schedule_ulsch_rnti(module_idP, cooperation_flag, frameP, subframeP, sched_subframe,first_rb);
gauthier's avatar
   
gauthier committed
661

662
#ifdef CBA
663
  schedule_ulsch_cba_rnti(module_idP, cooperation_flag, frameP, subframeP, sched_subframe, first_rb);
664
665
#endif

knopp's avatar
   
knopp committed
666

667
  stop_meas(&eNB->schedule_ulsch);
gauthier's avatar
   
gauthier committed
668

669
670
671
672
673
674
675
676
677
}



void schedule_ulsch_rnti(module_id_t   module_idP,
                         unsigned char cooperation_flag,
                         frame_t       frameP,
                         sub_frame_t   subframeP,
                         unsigned char sched_subframe,
678
679
680
681
682
683
684
685
686
687
688
689
690
                         uint16_t     *first_rb)
{

  int                UE_id;
  uint8_t            aggregation    = 2;
  rnti_t             rnti           = -1;
  uint8_t            round          = 0;
  uint8_t            harq_pid       = 0;
  void              *ULSCH_dci      = NULL;
  LTE_eNB_UE_stats  *eNB_UE_stats   = NULL;
  DCI_PDU           *DCI_pdu;
  uint8_t                 status         = 0;
  uint8_t                 rb_table_index = -1;
knopp's avatar
knopp committed
691
  uint16_t                TBS = 0;
692
693
  //  int32_t                buffer_occupancy=0;
  uint32_t                cqi_req,cshift,ndi,mcs=0,rballoc,tpc;
694
695
696
  int32_t                 normalized_rx_power, target_rx_power=-90;
  static int32_t          tpc_accumulated=0;

697
  int n,CC_id = 0;
698
699
700
  eNB_MAC_INST      *eNB=&eNB_mac_inst[module_idP];
  UE_list_t         *UE_list=&eNB->UE_list;
  UE_TEMPLATE       *UE_template;
701
  UE_sched_ctrl     *UE_sched_ctrl;
702

703
  //  int                rvidx_tab[4] = {0,2,3,1};
704
  LTE_DL_FRAME_PARMS   *frame_parms;
705
  int drop_ue=0;
706
707
708
709
710
711
712

  //  LOG_I(MAC,"entering ulsch preprocesor\n");

  ulsch_scheduler_pre_processor(module_idP,
                                frameP,
                                subframeP,
                                first_rb,
713
                                aggregation);
714
715
716
717
718
719
720

  //  LOG_I(MAC,"exiting ulsch preprocesor\n");

  // loop over all active UEs
  for (UE_id=UE_list->head_ul; UE_id>=0; UE_id=UE_list->next_ul[UE_id]) {

    // don't schedule if Msg4 is not received yet
721
    if (UE_list->UE_template[UE_PCCID(module_idP,UE_id)][UE_id].configured==FALSE) {
722
723
      LOG_I(MAC,"[eNB %d] frame %d subfarme %d, UE %d: not configured, skipping UE scheduling \n", 
	    module_idP,frameP,subframeP,UE_id);
724
      continue;
725
    }
726
727
728

    rnti = UE_RNTI(module_idP,UE_id);

729
    if (rnti==NOT_A_RNTI) {
730
      LOG_W(MAC,"[eNB %d] frame %d subfarme %d, UE %d: no RNTI \n", module_idP,frameP,subframeP,UE_id);
731
732
      continue;
    }
gauthier's avatar
   
gauthier committed
733

734
735
736
737
738
739
    // loop over all active UL CC_ids for this UE
    for (n=0; n<UE_list->numactiveULCCs[UE_id]; n++) {
      // This is the actual CC_id in the list
      CC_id = UE_list->ordered_ULCCids[n][UE_id];
      frame_parms = mac_xface->get_lte_frame_parms(module_idP,CC_id);
      eNB_UE_stats = mac_xface->get_eNB_UE_stats(module_idP,CC_id,rnti);
gauthier's avatar
   
gauthier committed
740

741
      if (eNB_UE_stats==NULL) {
742
743
        LOG_W(MAC,"[eNB %d] frame %d subframe %d, UE %d/%x CC %d: no PHY context\n", module_idP,frameP,subframeP,UE_id,rnti,CC_id);
	drop_ue=1;
744
745
746
        continue; // mac_xface->macphy_exit("[MAC][eNB] Cannot find eNB_UE_stats\n");
      }

747
748
749
      if (drop_ue==1)
	continue;

750
751
      if (CCE_allocation_infeasible(module_idP,CC_id,0,subframeP,aggregation,rnti)) {
        LOG_W(MAC,"[eNB %d] frame %d subframe %d, UE %d/%x CC %d: not enough nCCE\n", module_idP,frameP,subframeP,UE_id,rnti,CC_id);
752
753
        continue; // break;
      }
gauthier's avatar
   
gauthier committed
754

755

756
      //      printf("UE %d/%x is feasible, mode %s\n",UE_id,rnti,mode_string[eNB_UE_stats->mode]);
gauthier's avatar
   
gauthier committed
757

758
      if (eNB_UE_stats->mode == PUSCH) { // ue has a ulsch channel
gauthier's avatar
   
gauthier committed
759

760
        DCI_pdu = &eNB->common_channels[CC_id].DCI_pdu;
761
762
        UE_template   = &UE_list->UE_template[CC_id][UE_id];
        UE_sched_ctrl = &UE_list->UE_sched_ctrl[UE_id];
gauthier's avatar
   
gauthier committed
763

764
        if (mac_xface->get_ue_active_harq_pid(module_idP,CC_id,rnti,frameP,subframeP,&harq_pid,&round,1) == -1 ) {
765
          LOG_W(MAC,"[eNB %d] Scheduler Frame %d, subframeP %d: candidate harq_pid from PHY for UE %d CC %d RNTI %x\n",
766
767
768
                module_idP,frameP,subframeP, UE_id, CC_id, rnti);
          continue;
        } else
769
770
          LOG_T(MAC,"[eNB %d] Frame %d, subframeP %d, UE %d CC %d : got harq pid %d  round %d (rnti %x,mode %s)\n",
                module_idP,frameP,subframeP,UE_id,CC_id, harq_pid, round,rnti,mode_string[eNB_UE_stats->mode]);
gauthier's avatar
   
gauthier committed
771

772
	PHY_vars_eNB_g[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP*10)+subframeP] = UE_template->ul_total_buffer;
773
	VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_BO,PHY_vars_eNB_g[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP*10)+subframeP]);	
774
        if (((UE_is_to_be_scheduled(module_idP,CC_id,UE_id)>0)) || (round>0))// || ((frameP%10)==0))
775
776
          // if there is information on bsr of DCCH, DTCH or if there is UL_SR, or if there is a packet to retransmit, or we want to schedule a periodic feedback every 10 frames
        {
Florian Kaltenberger's avatar
Florian Kaltenberger committed
777
778
	  LOG_D(MAC,"[eNB %d][PUSCH] Frame %d subframe %d Scheduling UE %d/%x in round %d(SR %d,UL_inactivity timer %d,UL_failure timer %d)\n",
		module_idP,frameP,subframeP,UE_id,rnti,round,UE_template->ul_SR,
779
780
		UE_sched_ctrl->ul_inactivity_timer,
		UE_sched_ctrl->ul_failure_timer);
781
782
          // reset the scheduling request
          UE_template->ul_SR = 0;
783
          aggregation = process_ue_cqi(module_idP,UE_id); 
784
          status = mac_eNB_get_rrc_status(module_idP,rnti);
785
786
	  if (status < RRC_CONNECTED)
	    cqi_req = 0;
787
	  else if (UE_sched_ctrl->cqi_req_timer>30) {
788
	    cqi_req = 1;
789
	    UE_sched_ctrl->cqi_req_timer=0;
790
791
792
	  }
	  else
	    cqi_req = 0;
793
794
795
796
797
798

          //power control
          //compute the expected ULSCH RX power (for the stats)

          // this is the normalized RX power and this should be constant (regardless of mcs
          normalized_rx_power = eNB_UE_stats->UL_rssi[0];
knopp's avatar
knopp committed
799
          target_rx_power = mac_xface->get_target_pusch_rx_power(module_idP,CC_id);
800
801

          // this assumes accumulated tpc
kaltenbe's avatar
kaltenbe committed
802
	  // make sure that we are only sending a tpc update once a frame, otherwise the control loop will freak out
803
804
805
806
	  int32_t framex10psubframe = UE_template->pusch_tpc_tx_frame*10+UE_template->pusch_tpc_tx_subframe;
          if (((framex10psubframe+10)<=(frameP*10+subframeP)) || //normal case
	      ((framex10psubframe>(frameP*10+subframeP)) && (((10240-framex10psubframe+frameP*10+subframeP)>=10)))) //frame wrap-around
	    {
knopp's avatar
knopp committed
807
808
	    UE_template->pusch_tpc_tx_frame=frameP;
	    UE_template->pusch_tpc_tx_subframe=subframeP;
809
810
811
812
813
814
            if (normalized_rx_power>(target_rx_power+1)) {
              tpc = 0; //-1
              tpc_accumulated--;
            } else if (normalized_rx_power<(target_rx_power-1)) {
              tpc = 2; //+1
              tpc_accumulated++;
815
            } else {
816
              tpc = 1; //0
817
818
            }
          } else {
819
            tpc = 1; //0
820
          }
821

822
	  if (tpc!=1) {
navid's avatar
navid committed
823
	    LOG_D(MAC,"[eNB %d] ULSCH scheduler: frame %d, subframe %d, harq_pid %d, tpc %d, accumulated %d, normalized/target rx power %d/%d\n",
824
825
826
827
		  module_idP,frameP,subframeP,harq_pid,tpc,
		  tpc_accumulated,normalized_rx_power,target_rx_power);
	  }

828
829
830
831
832
          // new transmission
          if (round==0) {

            ndi = 1-UE_template->oldNDI_UL[harq_pid];
            UE_template->oldNDI_UL[harq_pid]=ndi;
833
834
835
	    UE_list->eNB_UE_stats[CC_id][UE_id].normalized_rx_power=normalized_rx_power;
	    UE_list->eNB_UE_stats[CC_id][UE_id].target_rx_power=target_rx_power;
	    UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs1=UE_template->pre_assigned_mcs_ul;
836
            mcs = cmin (UE_template->pre_assigned_mcs_ul, openair_daq_vars.target_ue_ul_mcs); // adjust, based on user-defined MCS
837
	    if ((cqi_req==1) && (mcs>19)) {
838
839
		mcs=19;
	    }
840
            if (UE_template->pre_allocated_rb_table_index_ul >=0) {
841
              rb_table_index=UE_template->pre_allocated_rb_table_index_ul;
842
            } else {
843
	      mcs=cmin (10, openair_daq_vars.target_ue_ul_mcs);
844
              rb_table_index=5; // for PHR
845
	    }
846
847

            UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs2=mcs;
848
	    //            buffer_occupancy = UE_template->ul_total_buffer;
849

850
            while (((rb_table[rb_table_index]>(frame_parms->N_RB_UL-1-first_rb[CC_id])) ||
851
		    (rb_table[rb_table_index]>45)) &&
852
853
854
855
856
                   (rb_table_index>0)) {
              rb_table_index--;
            }

            TBS = mac_xface->get_TBS_UL(mcs,rb_table[rb_table_index]);
857
858
	    UE_list->eNB_UE_stats[CC_id][UE_id].total_rbs_used_rx+=rb_table[rb_table_index];
	    UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_TBS=TBS;
859
	    //            buffer_occupancy -= TBS;
860
861
862
            rballoc = mac_xface->computeRIV(frame_parms->N_RB_UL,
                                            first_rb[CC_id],
                                            rb_table[rb_table_index]);
863
	    // bad indices : 20 (40 PRB), 21 (45 PRB), 22 (48 PRB)
864
865
866
867
            // increment for next UE allocation
            first_rb[CC_id]+=rb_table[rb_table_index];
            //store for possible retransmission
            UE_template->nb_rb_ul[harq_pid] = rb_table[rb_table_index];
868
	    UE_sched_ctrl->ul_scheduled |= (1<<harq_pid);
869
870
	    if (UE_id == UE_list->head)
	      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_SCHEDULED,UE_sched_ctrl->ul_scheduled);
871

872
873
874
875
876
877
	    if (mac_eNB_get_rrc_status(module_idP,rnti) < RRC_CONNECTED)
	      LOG_I(MAC,"[eNB %d][PUSCH %d/%x] CC_id %d Frame %d subframeP %d Scheduled UE %d (mcs %d, first rb %d, nb_rb %d, rb_table_index %d, TBS %d, harq_pid %d)\n",
		    module_idP,harq_pid,rnti,CC_id,frameP,subframeP,UE_id,mcs,
		    first_rb[CC_id],rb_table[rb_table_index],
		    rb_table_index,TBS,harq_pid);
	    
878
879
880
881
882
883
884
	    // adjust total UL buffer status by TBS, wait for UL sdus to do final update
	    LOG_D(MAC,"[eNB %d] CC_id %d UE %d/%x : adjusting ul_total_buffer, old %d, TBS %d\n", module_idP,CC_id,UE_id,rnti,UE_template->ul_total_buffer,TBS);
	    if (UE_template->ul_total_buffer > TBS)
	      UE_template->ul_total_buffer -= TBS;
	    else
	      UE_template->ul_total_buffer = 0;
	    LOG_D(MAC,"ul_total_buffer, new %d\n", UE_template->ul_total_buffer);
885
	    // Cyclic shift for DM RS
886
887
	    cshift = 0;// values from 0 to 7 can be used for mapping the cyclic shift (36.211 , Table 5.5.2.1.1-1)
	    	    
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
917
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
990
991
992
993
994
995
996
997
998
999
1000
	    if (frame_parms->frame_type == TDD) {
	      switch (frame_parms->N_RB_UL) {
	      case 6:
		ULSCH_dci = UE_template->ULSCH_DCI[harq_pid];
		
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->type     = 0;
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->hopping  = 0;
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->rballoc  = rballoc;
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->mcs      = mcs;
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->ndi      = ndi;
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->TPC      = tpc;
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->cshift   = cshift;
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->padding  = 0;
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->dai      = UE_template->DAI_ul[sched_subframe];
		((DCI0_1_5MHz_TDD_1_6_t *)ULSCH_dci)->cqi_req  = cqi_req;
		
		add_ue_spec_dci(DCI_pdu,
				ULSCH_dci,
				rnti,
				sizeof(DCI0_1_5MHz_TDD_1_6_t),
				aggregation,
				sizeof_DCI0_1_5MHz_TDD_1_6_t,
				format0,
				0);
		break;
		
	      default:
	      case 25:
		ULSCH_dci = UE_template->ULSCH_DCI[harq_pid];
		
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->type     = 0;
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->hopping  = 0;
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->rballoc  = rballoc;
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->mcs      = mcs;
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->ndi      = ndi;
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->TPC      = tpc;
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->cshift   = cshift;
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->padding  = 0;
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->dai      = UE_template->DAI_ul[sched_subframe];
		((DCI0_5MHz_TDD_1_6_t *)ULSCH_dci)->cqi_req  = cqi_req;
		
		add_ue_spec_dci(DCI_pdu,
				ULSCH_dci,
				rnti,
				sizeof(DCI0_5MHz_TDD_1_6_t),
				aggregation,
				sizeof_DCI0_5MHz_TDD_1_6_t,
				format0,
				0);
		break;
		
	      case 50:
		ULSCH_dci = UE_template->ULSCH_DCI[harq_pid];
		
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->type     = 0;
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->hopping  = 0;
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->rballoc  = rballoc;
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->mcs      =