eNB_scheduler_ulsch.c 58.5 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
21 22 23

/*! \file eNB_scheduler_ulsch.c
 * \brief eNB procedures for the ULSCH transport channel
24 25 26
 * \author Navid Nikaein and Raymond Knopp
 * \date 2010 - 2014
 * \email: navid.nikaein@eurecom.fr
27
 * \version 1.0
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57
 * @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

Cedric Roux's avatar
Cedric Roux committed
58 59
#include "T.h"

60
#define ENABLE_MAC_PAYLOAD_DEBUG
61 62 63 64 65
#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};

66 67 68 69 70 71 72 73 74
void rx_sdu(const module_id_t enb_mod_idP,
	    const int         CC_idP,
	    const frame_t     frameP,
	    const sub_frame_t subframeP,
	    const rnti_t      rntiP,
	    uint8_t          *sduP,
	    const uint16_t    sdu_lenP,
	    const int         harq_pidP,
	    uint8_t          *msg3_flagP)
75 76 77 78 79 80 81 82 83
{

  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;
84
  int crnti_rx=0;
85
  int old_buffer_info;
86 87 88 89

  start_meas(&eNB->rx_ulsch_sdu);

  if ((UE_id >  NUMBER_OF_UE_MAX) || (UE_id == -1)  )
90 91 92
    for(ii=0; ii<NB_RB_MAX; ii++) {
      rx_lengths[ii] = 0;
    }
93

gauthier's avatar
gauthier committed
94
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RX_SDU,1);
95
  if (opt_enabled == 1) {
96
    trace_pdu(0, sduP,sdu_lenP, 0, 3, rntiP, frameP, subframeP, 0,0);
97
    LOG_D(OPT,"[eNB %d][ULSCH] Frame %d  rnti %x  with size %d\n",
98
    		  enb_mod_idP, frameP, rntiP, sdu_lenP);
99
  }
100

101
  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);
102

gauthier's avatar
gauthier committed
103 104 105 106 107
  if (sduP==NULL) { // we've got an error after N rounds
    UE_list->UE_sched_ctrl[UE_id].ul_scheduled       &= (~(1<<harq_pidP));
    return;
  }

108
  if (UE_id!=-1) {
109
    UE_list->UE_sched_ctrl[UE_id].ul_inactivity_timer=0;
110 111 112
    UE_list->UE_sched_ctrl[UE_id].ul_failure_timer   =0;
    UE_list->UE_sched_ctrl[UE_id].ul_scheduled       &= (~(1<<harq_pidP));

113 114 115 116
    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));
    }
117
  }
gauthier's avatar
gauthier committed
118 119


120
  payload_ptr = parse_ulsch_header(sduP,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,sdu_lenP);
gauthier's avatar
gauthier committed
121

Cedric Roux's avatar
Cedric Roux committed
122 123
  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));
124 125
  T(T_ENB_MAC_UE_UL_PDU_WITH_DATA, 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), T_BUFFER(sduP, sdu_lenP));
gauthier's avatar
gauthier committed
126

127 128 129
  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;
130 131 132
  // control element
  for (i=0; i<num_ce; i++) {

Cedric Roux's avatar
Cedric Roux committed
133 134 135
    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]));

136 137 138 139
    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;
140 141
        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);
142
        UE_list->UE_template[CC_idP][UE_id].phr_info_configured=1;
143
	UE_list->UE_sched_ctrl[UE_id].phr_received = 1;
144 145 146 147 148
      }
      payload_ptr+=sizeof(POWER_HEADROOM_CMD);
      break;

    case CRNTI:
149
      UE_id = find_UE_id(enb_mod_idP,(((uint16_t)payload_ptr[0])<<8) + payload_ptr[1]);
150 151
      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);
152 153 154 155 156 157 158 159
      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]);
	}
      }
160
      crnti_rx=1;
161
      payload_ptr+=2;
162

163
      if (msg3_flagP != NULL) {
164
	*msg3_flagP = 0;
165
      }
166 167 168 169
      break;

    case TRUNCATED_BSR:
    case SHORT_BSR: {
170 171 172 173 174 175
      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);

176 177 178
      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);
179
      if (UE_id  != -1) {
180

181 182
        UE_list->UE_template[CC_idP][UE_id].bsr_info[lcgid] = (payload_ptr[0] & 0x3f);

183
	// update buffer info
184
	
185 186
	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]];

187
	UE_list->UE_template[CC_idP][UE_id].ul_total_buffer= UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[lcgid];
188 189

	PHY_vars_eNB_g[enb_mod_idP][CC_idP]->pusch_stats_bsr[UE_id][(frameP*10)+subframeP] = (payload_ptr[0] & 0x3f);
190 191
	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]);	
192
        if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[lcgid] == 0 ) {
193
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[lcgid]=frameP;
194
        }
gauthier's avatar
gauthier committed
195 196 197 198
	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]);	
199
      }
200
      else {
201

202
      }
203
      payload_ptr += 1;//sizeof(SHORT_BSR); // fixme
knopp's avatar
knopp committed
204
    }
205
    break;
gauthier's avatar
gauthier committed
206

207 208 209 210 211 212 213 214
    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);
215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249

	// 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;

250
        LOG_D(MAC, "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR LCGID0 = %u LCGID1 = "
251
              "%u LCGID2 = %u LCGID3 = %u\n",
252
              enb_mod_idP, CC_idP,
253 254 255 256 257
              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]);
258 259
      if (crnti_rx==1)
        LOG_I(MAC, "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR LCGID0 = %u LCGID1 = "
260
              "%u LCGID2 = %u LCGID3 = %u\n",
261
              enb_mod_idP, CC_idP,
262 263 264 265 266 267
              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]);

268
        if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0] == 0 ) {
269
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID0]=0;
270
        } else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID0] == 0) {
271
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID0]=frameP;
272
        }
273

274
        if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1] == 0 ) {
275
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID1]=0;
276
        } else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID1] == 0) {
277
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID1]=frameP;
278
        }
279

280
        if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2] == 0 ) {
281
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID2]=0;
282
        } else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID2] == 0) {
283
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID2]=frameP;
284
        }
285

286
        if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3] == 0 ) {
287
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID3]= 0;
288
        } else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID3] == 0) {
289 290
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID3]=frameP;

291
        }
292 293 294 295 296 297
      }

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

    default:
298
      LOG_E(MAC, "[eNB %d] CC_id %d Received unknown MAC header (0x%02x)\n", enb_mod_idP, CC_idP, rx_ces[i]);
299 300 301 302 303 304 305
      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]);

Cedric Roux's avatar
Cedric Roux committed
306 307
    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]));
308 309
    T(T_ENB_MAC_UE_UL_SDU_WITH_DATA, 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]), T_BUFFER(payload_ptr, rx_lengths[i]));
Cedric Roux's avatar
Cedric Roux committed
310

311 312
    switch (rx_lcids[i]) {
    case CCCH :
Cedric Roux's avatar
Cedric Roux committed
313 314 315 316 317
      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;
      }
318 319
      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,
320
            payload_ptr[0],payload_ptr[1],payload_ptr[2],payload_ptr[3],payload_ptr[4], payload_ptr[5], rntiP);
321 322
      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);
323
      for (ii=0; ii<NB_RA_PROC_MAX; ii++) {
324
        LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Checking proc %d : rnti (%x, %x), active %d\n",
325
              enb_mod_idP, CC_idP, ii,
326 327
              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
328

329 330
        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
331

332
          //payload_ptr = parse_ulsch_header(msg3,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,msg3_len);
gauthier's avatar
gauthier committed
333

334 335
          if (UE_id < 0) {
            memcpy(&eNB->common_channels[CC_idP].RA_template[ii].cont_res_id[0],payload_ptr,6);
Cedric Roux's avatar
Cedric Roux committed
336
            LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d CCCH: Received Msg3: length %d, offset %ld\n",
337
                  enb_mod_idP,CC_idP,frameP,rx_lengths[i],payload_ptr-sduP);
gauthier's avatar
gauthier committed
338

339
            if ((UE_id=add_new_ue(enb_mod_idP,CC_idP,eNB->common_channels[CC_idP].RA_template[ii].rnti,harq_pidP)) == -1 ) {
340
              mac_xface->macphy_exit("[MAC][eNB] Max user count reached\n");
kaltenbe's avatar
kaltenbe committed
341
	      // kill RA procedure
342
            } else
343 344
              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);
345
          } else {
Cedric Roux's avatar
Cedric Roux committed
346
            LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d CCCH: Received Msg3 from already registered UE %d: length %d, offset %ld\n",
347
                  enb_mod_idP,CC_idP,frameP,UE_id,rx_lengths[i],payload_ptr-sduP);
kaltenbe's avatar
kaltenbe committed
348
	    // kill RA procedure
349
          }
gauthier's avatar
gauthier committed
350

351
          if (Is_rrc_registered == 1)
352 353
            mac_rrc_data_ind(
              enb_mod_idP,
354
              CC_idP,
355
              frameP,subframeP,
356 357 358
              rntiP,
              CCCH,
              (uint8_t*)payload_ptr,
359
              rx_lengths[i],
360 361 362
              ENB_FLAG_YES,
              enb_mod_idP,
              0);
gauthier's avatar
gauthier committed
363 364


365 366 367
          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
368

369 370
          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
371

372 373
        } // if process is active
      } // loop on RA processes
nikaeinn's avatar
nikaeinn committed
374 375
      
      break ;
gauthier's avatar
gauthier committed
376

nikaeinn's avatar
nikaeinn committed
377
    case DCCH :
378 379
    case DCCH1 :
      //      if(eNB_mac_inst[module_idP][CC_idP].Dcch_lchan[UE_id].Active==1){
380
      
gauthier's avatar
gauthier committed
381

knopp's avatar
knopp committed
382
#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
383
      LOG_T(MAC,"offset: %d\n",(unsigned char)((unsigned char*)payload_ptr-sduP));
384
      for (j=0; j<32; j++) {
385
        LOG_T(MAC,"%x ",payload_ptr[j]);
386
      }
387
      LOG_T(MAC,"\n");
knopp's avatar
knopp committed
388
#endif
gauthier's avatar
gauthier committed
389

390
      if (UE_id != -1) {
391 392
	// 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])
393
	  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];
394 395 396
	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;

397 398 399 400
          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(
401 402 403 404 405 406 407 408 409 410 411
			   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);
412 413 414
          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 */
nikaeinn's avatar
nikaeinn committed
415 416
 
      // } 
417 418
      break;

nikaeinn's avatar
nikaeinn committed
419 420 421
      // all the DRBS
    case DTCH:
    default :
gauthier's avatar
gauthier committed
422

knopp's avatar
knopp committed
423
#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
424
      LOG_T(MAC,"offset: %d\n",(unsigned char)((unsigned char*)payload_ptr-sduP));
425
      for (j=0; j<32; j++) {
426
        LOG_T(MAC,"%x ",payload_ptr[j]);
427
      }
428 429
      LOG_T(MAC,"\n");
#endif
nikaeinn's avatar
nikaeinn committed
430 431 432 433 434
      if (rx_lcids[i]  < NB_RB_MAX ) {
	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]);
	
	if (UE_id != -1) {
nikaeinn's avatar
nikaeinn committed
435
	  // adjust buffer occupancy of the correponding logical channel group
Cedric Roux's avatar
Cedric Roux committed
436
	  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 %ld, %d\n",
nikaeinn's avatar
nikaeinn committed
437 438 439 440 441 442 443 444
		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])
	    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];
	  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;
nikaeinn's avatar
nikaeinn committed
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
	  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,
			     rx_lcids[i],
			     (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];
	  }
	  else { /* rx_length[i] */
	    UE_list->eNB_UE_stats[CC_idP][UE_id].num_errors_rx+=1;
	    LOG_E(MAC,"[eNB %d] CC_id %d Frame %d : Max size of transport block reached LCID %d from UE %d ",
		  enb_mod_idP, CC_idP, frameP, rx_lcids[i], UE_id);
	  }
	}    
	else {/*(UE_id != -1*/ 
	  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);
	}
      }
473 474

      break;
knopp's avatar
knopp committed
475
    }
nikaeinn's avatar
nikaeinn committed
476
  
477 478 479 480 481
    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)) {
482 483
    if (UE_id != -1)
      UE_list->eNB_UE_stats[CC_idP][UE_id].total_num_errors_rx+=1;
484 485 486

    if (msg3_flagP != NULL) {
      if( *msg3_flagP == 1 ) {
487
        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);
488 489
        *msg3_flagP=0;
      }
490
    }
491
  } else {
492 493 494 495 496
    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;
    }
497 498
  }

gauthier's avatar
gauthier committed
499
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RX_SDU,0);
500
  stop_meas(&eNB->rx_ulsch_sdu);
knopp's avatar
knopp committed
501 502 503
}


504 505
uint32_t bytes_to_bsr_index(int32_t nbytes)
{
506

507
  uint32_t i=0;
508

509
  if (nbytes<0) {
510
    return(0);
511
  }
512

513 514 515 516 517 518
  while ((i<BSR_TABLE_SIZE)&&
         (BSR_TABLE[i]<=nbytes)) {
    i++;
  }

  return(i-1);
519 520
}

521 522
void add_ue_ulsch_info(module_id_t module_idP, int CC_id, int UE_id, sub_frame_t subframeP, UE_ULSCH_STATUS status)
{
523

524 525 526
  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;
527

528
  eNB_ulsch_info[module_idP][CC_id][UE_id].serving_num++;
529 530 531 532

}

unsigned char *parse_ulsch_header(unsigned char *mac_header,
gauthier's avatar
gauthier committed
533 534 535 536 537
                                  unsigned char *num_ce,
                                  unsigned char *num_sdu,
                                  unsigned char *rx_ces,
                                  unsigned char *rx_lcids,
                                  unsigned short *rx_lengths,
538 539 540 541 542 543 544 545 546
                                  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) {

547
    if (((SCH_SUBHEADER_FIXED*)mac_header_ptr)->E == 0) {
548
      not_done = 0;
549
    }
550 551 552 553 554 555 556 557

    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;

558
        for (num_sdu_cnt=0; num_sdu_cnt < num_sdus ; num_sdu_cnt++) {
559
          length -= rx_lengths[num_sdu_cnt];
560
        }
561 562 563 564 565 566 567
      } 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
568
        }
569 570
      }

Cedric Roux's avatar
Cedric Roux committed
571
      LOG_D(MAC,"[eNB] sdu %d lcid %d tb_length %d length %d (offset now %ld)\n",
572 573 574 575 576 577 578 579 580 581 582 583
            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++;

584
        if (lcid==LONG_BSR) {
585
          ce_len+=3;
586
        } else if (lcid==CRNTI) {
587
          ce_len+=2;
588
        } else if ((lcid==POWER_HEADROOM) || (lcid==TRUNCATED_BSR)|| (lcid== SHORT_BSR)) {
589
          ce_len++;
590
        } else {
591 592
          LOG_E(MAC,"unknown CE %d \n", lcid);
          mac_xface->macphy_exit("unknown CE");
gauthier's avatar
gauthier committed
593
        }
594
      }
knopp's avatar
knopp committed
595
    }
596
  }
597

598 599 600 601
  *num_ce = num_ces;
  *num_sdu = num_sdus;

  return(mac_header_ptr);
602 603
}

604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626
/* This function is called by PHY layer when it schedules some
 * uplink for a random access message 3.
 * The MAC scheduler has to skip the RBs used by this message 3
 * (done below in schedule_ulsch).
 */
void set_msg3_subframe(module_id_t Mod_id,
                       int CC_id,
                       int frame,
                       int subframe,
                       int rnti,
                       int Msg3_frame,
                       int Msg3_subframe)
{
  eNB_MAC_INST *eNB=&eNB_mac_inst[Mod_id];
  int i;
  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].rnti == rnti) {
      eNB->common_channels[CC_id].RA_template[i].Msg3_subframe = Msg3_subframe;
      break;
    }
  }
}
627

628 629 630 631 632 633
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
634 635


636 637 638
  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
639

640
  start_meas(&eNB->schedule_ulsch);
gauthier's avatar
gauthier committed
641 642


643
  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
gauthier's avatar
gauthier committed
644

645
    //leave out first RB for PUCCH
646
    first_rb[CC_id] = 1;
gauthier's avatar
gauthier committed
647

648 649 650 651
    // 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
652

653 654
    // default function for default scheduling
    //
gauthier's avatar
gauthier committed
655

656 657 658 659
    // 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
660

661 662 663
    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) &&
664 665
          (eNB->common_channels[CC_id].RA_template[i].generate_Msg4 == 0) &&
          (eNB->common_channels[CC_id].RA_template[i].wait_ack_Msg4 == 0) &&
666 667
          (eNB->common_channels[CC_id].RA_template[i].Msg3_subframe == sched_subframe)) {
        first_rb[CC_id]++;
668
        eNB->common_channels[CC_id].RA_template[i].Msg3_subframe = -1;
669 670
        break;
      }
knopp's avatar
knopp committed
671
    }
672 673 674 675 676 677

    /*
    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),
    */

678
  }
679

680
  schedule_ulsch_rnti(module_idP, cooperation_flag, frameP, subframeP, sched_subframe,first_rb);
gauthier's avatar
gauthier committed
681

682
#ifdef CBA
683
  schedule_ulsch_cba_rnti(module_idP, cooperation_flag, frameP, subframeP, sched_subframe, first_rb);
684 685
#endif

knopp's avatar
knopp committed
686

687
  stop_meas(&eNB->schedule_ulsch);
gauthier's avatar
gauthier committed
688

689 690 691 692 693 694 695 696 697
}



void schedule_ulsch_rnti(module_id_t   module_idP,
                         unsigned char cooperation_flag,
                         frame_t       frameP,
                         sub_frame_t   subframeP,
                         unsigned char sched_subframe,
698 699 700 701 702 703 704 705 706 707 708 709 710
                         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;
711
  uint16_t                TBS = 0;
712 713
  //  int32_t                buffer_occupancy=0;
  uint32_t                cqi_req,cshift,ndi,mcs=0,rballoc,tpc;
714 715 716
  int32_t                 normalized_rx_power, target_rx_power=-90;
  static int32_t          tpc_accumulated=0;

717
  int n,CC_id = 0;
718 719 720
  eNB_MAC_INST      *eNB=&eNB_mac_inst[module_idP];
  UE_list_t         *UE_list=&eNB->UE_list;
  UE_TEMPLATE       *UE_template;
721
  UE_sched_ctrl     *UE_sched_ctrl;
722

723
  //  int                rvidx_tab[4] = {0,2,3,1};
724
  LTE_DL_FRAME_PARMS   *frame_parms;
725
  int drop_ue=0;
726 727 728 729 730 731 732

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

  ulsch_scheduler_pre_processor(module_idP,
                                frameP,
                                subframeP,
                                first_rb,
733
                                aggregation);
734 735 736 737 738 739 740

  //  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
741
    if (UE_list->UE_template[UE_PCCID(module_idP,UE_id)][UE_id].configured==FALSE) {
742 743
      LOG_I(MAC,"[eNB %d] frame %d subfarme %d, UE %d: not configured, skipping UE scheduling \n", 
	    module_idP,frameP,subframeP,UE_id);
744
      continue;
745
    }
746 747 748

    rnti = UE_RNTI(module_idP,UE_id);

749
    if (rnti==NOT_A_RNTI) {
750
      LOG_W(MAC,"[eNB %d] frame %d subfarme %d, UE %d: no RNTI \n", module_idP,frameP,subframeP,UE_id);
751 752
      continue;
    }
gauthier's avatar
gauthier committed
753

754 755 756 757 758 759
    // 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
760

761
      if (eNB_UE_stats==NULL) {
762 763
        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;
764 765 766
        continue; // mac_xface->macphy_exit("[MAC][eNB] Cannot find eNB_UE_stats\n");
      }

767 768 769
      if (drop_ue==1)
	continue;

770 771
      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);
772 773
        continue; // break;
      }
gauthier's avatar
gauthier committed
774

775

776
      //      printf("UE %d/%x is feasible, mode %s\n",UE_id,rnti,mode_string[eNB_UE_stats->mode]);
gauthier's avatar
gauthier committed
777

778
      if (eNB_UE_stats->mode == PUSCH) { // ue has a ulsch channel
gauthier's avatar
gauthier committed
779

780
        DCI_pdu = &eNB->common_channels[CC_id].DCI_pdu;
781 782
        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
783

784
        if (mac_xface->get_ue_active_harq_pid(module_idP,CC_id,rnti,frameP,subframeP,&harq_pid,&round,openair_harq_UL) == -1 ) {
785
          LOG_W(MAC,"[eNB %d] Scheduler Frame %d, subframeP %d: candidate harq_pid from PHY for UE %d CC %d RNTI %x\n",
786 787 788
                module_idP,frameP,subframeP, UE_id, CC_id, rnti);
          continue;
        } else
789 790
          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
791

792
	PHY_vars_eNB_g[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP*10)+subframeP] = UE_template->ul_total_buffer;
793
	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]);	
794
        if (((UE_is_to_be_scheduled(module_idP,CC_id,UE_id)>0)) || (round>0))// || ((frameP%10)==0))
795 796
          // 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
        {
797 798
	  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,
799 800
		UE_sched_ctrl->ul_inactivity_timer,
		UE_sched_ctrl->ul_failure_timer);
801 802
          // reset the scheduling request
          UE_template->ul_SR = 0;
803
          aggregation = process_ue_cqi(module_idP,UE_id); 
804
          status = mac_eNB_get_rrc_status(module_idP,rnti);
805 806
	  if (status < RRC_CONNECTED)
	    cqi_req = 0;
807
	  else if (UE_sched_ctrl->cqi_req_timer>30) {
808
	    cqi_req = 1;
809
	    UE_sched_ctrl->cqi_req_timer=0;
810 811 812
	  }
	  else
	    cqi_req = 0;
813 814 815 816 817 818

          //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];
819
          target_rx_power = mac_xface->get_target_pusch_rx_power(module_idP,CC_id);
820 821

          // this assumes accumulated tpc
kaltenbe's avatar
kaltenbe committed
822
	  // make sure that we are only sending a tpc update once a frame, otherwise the control loop will freak out
823 824 825 826
	  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
	    {
827 828
	    UE_template->pusch_tpc_tx_frame=frameP;
	    UE_template->pusch_tpc_tx_subframe=subframeP;
829 830 831 832 833 834
            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++;
835
            } else {
836
              tpc = 1; //0
837 838
            }
          } else {
839
            tpc = 1; //0
840
          }
841

842
	  if (tpc!=1) {
navid's avatar
navid committed
843
	    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",
844 845 846 847
		  module_idP,frameP,subframeP,harq_pid,tpc,
		  tpc_accumulated,normalized_rx_power,target_rx_power);
	  }

848 849 850 851 852
          // new transmission
          if (round==0) {

            ndi = 1-UE_template->oldNDI_UL[harq_pid];
            UE_template->oldNDI_UL[harq_pid]=ndi;
853 854 855
	    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;
856
            mcs = UE_template->pre_assigned_mcs_ul;//cmin (UE_template->pre_assigned_mcs_ul, openair_daq_vars.target_ue_ul_mcs); // adjust, based on user-defined MCS
857
            if (UE_template->pre_allocated_rb_table_index_ul >=0) {
858
              rb_table_index=UE_template->pre_allocated_rb_table_index_ul;
859
            } else {
860
	      mcs=10;//cmin (10, openair_daq_vars.target_ue_ul_mcs);
861
              rb_table_index=5; // for PHR
862
	    }
863 864

            UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs2=mcs;
865
	    //            buffer_occupancy = UE_template->ul_total_buffer;
866

867
            while (((rb_table[rb_table_index]>(frame_parms->N_RB_UL-1-first_rb[CC_id])) ||
868
		    (rb_table[rb_table_index]>45)) &&
869 870 871 872 873
                   (rb_table_index>0)) {
              rb_table_index--;
            }

            TBS = mac_xface->get_TBS_UL(mcs,rb_table[rb_table_index]);
874 875
	    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;
876
	    //            buffer_occupancy -= TBS;
877 878 879
            rballoc = mac_xface->computeRIV(frame_parms->N_RB_UL,
                                            first_rb[CC_id],
                                            rb_table[rb_table_index]);
880 881 882

            T(T_ENB_MAC_UE_UL_SCHEDULE, T_INT(module_idP), T_INT(CC_id), T_INT(rnti), T_INT(frameP),
              T_INT(subframeP), T_INT(harq_pid), T_INT(mcs), T_INT(first_rb[CC_id]), T_INT(rb_table[rb_table_index]),
Cedric Roux's avatar
Cedric Roux committed
883
              T_INT(TBS), T_INT(ndi));
884

885
	    // bad indices : 20 (40 PRB), 21 (45 PRB), 22 (48 PRB)
886 887 888 889
            // 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];
890
	    UE_sched_ctrl->ul_scheduled |= (1<<harq_pid);
891 892
	    if (UE_id == UE_list->head)
	      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_SCHEDULED,UE_sched_ctrl->ul_scheduled);
893

894 895 896 897 898
	    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);
899

900 901 902 903 904 905 906
	    // 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);
907
	    // Cyclic shift for DM RS
908 909
	    cshift = 0;// values from 0 to 7 can be used for mapping the cyclic shift (36.211 , Table 5.5.2.1.1-1)
	    	    
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 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 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 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107
	    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      = mcs;
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->ndi      = ndi;
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->TPC      = tpc;
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->cshift   = cshift;
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->padding  = 0;
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->dai      = UE_template->DAI_ul[sched_subframe];
		((DCI0_10MHz_TDD_1_6_t *)ULSCH_dci)->cqi_req  = cqi_req;
		
		add_ue_spec_dci(DCI_pdu,
				ULSCH_dci,
				rnti,
				sizeof(DCI0_10MHz_TDD_1_6_t),
				aggregation,
				sizeof_DCI0_10MHz_TDD_1_6_t,
				format0,
				0);
		break;
		
	      case 100:
		ULSCH_dci = UE_template->ULSCH_DCI[harq_pid];
		
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->type     = 0;
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->hopping  = 0;
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->rballoc  = rballoc;
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->mcs      = mcs;
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->ndi      = ndi;
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->TPC      = tpc;
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->cshift   = cshift;
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->padding  = 0;
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->dai      = UE_template->DAI_ul[sched_subframe];
		((DCI0_20MHz_TDD_1_6_t *)ULSCH_dci)->cqi_req  = cqi_req;
		
		add_ue_spec_dci(DCI_pdu,
				ULSCH_dci,
				rnti,
				sizeof(DCI0_20MHz_TDD_1_6_t),
				aggregation,
				sizeof_DCI0_20MHz_TDD_1_6_t,
				format0,
				0);
		break;
	      }
	    } // TDD
	    else { //FDD
	      switch (frame_parms->N_RB_UL) {
	      case 25:
	      default:
		
		ULSCH_dci          = UE_template->ULSCH_DCI[harq_pid];
		
		((DCI0_5MHz_FDD_t *)ULSCH_dci)->type     = 0;
		((DCI0_5MHz_FDD_t *)ULSCH_dci)->hopping  = 0;
		((DCI0_5MHz_FDD_t *)ULSCH_dci)->rballoc  = rballoc;
		((DCI0_5MHz_FDD_t *)ULSCH_dci)->mcs      = mcs;
		((DCI0_5MHz_FDD_t *)ULSCH_dci)->ndi      = ndi;
		((DCI0_5MHz_FDD_t *)ULSCH_dci)->TPC      = tpc;
		((DCI0_5MHz_FDD_t *)ULSCH_dci)->cshift   = cshift;
		((DCI0_5MHz_FDD_t *)ULSCH_dci)->padding  = 0;
		((DCI0_5MHz_FDD_t *)ULSCH_dci)->cqi_req  = cqi_req;
		
		add_ue_spec_dci(DCI_pdu,
				ULSCH_dci,
				rnti,
				sizeof(DCI0_5MHz_FDD_t),
				aggregation,
				sizeof_DCI0_5MHz_FDD_t,
				format0,
				0);
		break;
		
	      case 6:
		ULSCH_dci          = UE_template->ULSCH_DCI[harq_pid];
		
		((DCI0_1_5MHz_FDD_t *)ULSCH_dci)->type     = 0;
		((DCI0_1_5MHz_FDD_t *)ULSCH_dci)->hopping  = 0;
		((DCI0_1_5MHz_FDD_t *)ULSCH_dci)->rballoc  = rballoc;
		((DCI0_1_5MHz_FDD_t *)ULSCH_dci)->mcs      = mcs;
		((DCI0_1_5MHz_FDD_t *)ULSCH_dci)->ndi      = ndi;
		((DCI0_1_5MHz_FDD_t *)ULSCH_dci)->TPC      = tpc;
		((DCI0_1_5MHz_FDD_t *)ULSCH_dci)->cshift   = cshift;
		((DCI0_1_5MHz_FDD_t *)ULSCH_dci)->padding  = 0;
		((DCI0_1_5MHz_FDD_t *)ULSCH_dci)->cqi_req  = cqi_req;
		
		add_ue_spec_dci(DCI_pdu,
				ULSCH_dci,
				rnti,
				sizeof(DCI0_1_5MHz_FDD_t),
				aggregation,
				sizeof_DCI0_1_5MHz_FDD_t,
				format0,
				0);
		break;
		
	      case 50:
		ULSCH_dci          = UE_template->ULSCH_DCI[harq_pid];
		
		((DCI0_10MHz_FDD_t *)ULSCH_dci)->type     = 0;
		((DCI0_10MHz_FDD_t *)ULSCH_dci)->hopping  = 0;
		((DCI0_10MHz_FDD_t *)ULSCH_dci)->rballoc  = rballoc;
		((DCI0_10MHz_FDD_t *)ULSCH_dci)->mcs      = mcs;
		((DCI0_10MHz_FDD_t *)ULSCH_dci)->ndi      = ndi;
		((DCI0_10MHz_FDD_t *)ULSCH_dci)->TPC      = tpc;
		((DCI0_10MHz_FDD_t *)ULSCH_dci)->padding  = 0;
		((DCI0_10MHz_FDD_t *)ULSCH_dci)->cshift   = cshift;
		((DCI0_10MHz_FDD_t *)ULSCH_dci)->cqi_req  = cqi_req;
		
		add_ue_spec_dci(DCI_pdu,
				ULSCH_dci,
				rnti,
				sizeof(DCI0_10MHz_FDD_t),
				aggregation,
				sizeof_DCI0_10MHz_FDD_t,
				format0,
				0);
		break;
		
	      case 100:
		ULSCH_dci          = UE_template->ULSCH_DCI[harq_pid];
		
		((DCI0_20MHz_FDD_t *)ULSCH_dci)->type     = 0;
		((DCI0_20MHz_FDD_t *)ULSCH_dci)->hopping  = 0;
		((DCI0_20MHz_FDD_t *)ULSCH_dci)->rballoc  = rballoc;
		((DCI0_20MHz_FDD_t *)ULSCH_dci)->mcs      = mcs;
		((DCI0_20MHz_FDD_t *)ULSCH_dci)->ndi      = ndi;
		((DCI0_20MHz_FDD_t *)ULSCH_dci)->TPC      = tpc;
		((DCI0_20MHz_FDD_t *)ULSCH_dci)->padding  = 0;
		((DCI0_20MHz_FDD_t *)ULSCH_dci)->cshift   = cshift;
		((DCI0_20MHz_FDD_t *)ULSCH_dci)->cqi_req  = cqi_req;
		
		add_ue_spec_dci(DCI_pdu,
				ULSCH_dci,
				rnti,
				sizeof(DCI0_20MHz_FDD_t),
				aggregation,
				sizeof_DCI0_20MHz_FDD_t,
				format0,
				0);
		break;
		
	      }
	    }
1108

1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122

	    add_ue_ulsch_info(module_idP,
			      CC_id,
			      UE_id,
			      subframeP,
			      S_UL_SCHEDULED);
	    
	    LOG_D(MAC,"[eNB %d] CC_id %d Frame %d, subframeP %d: Generated ULSCH DCI for next UE_id %d, format 0\n", module_idP,CC_id,frameP,subframeP,UE_id);
#ifdef DEBUG
	    dump_dci(frame_parms, &DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci-1]);
#endif
	    
          }
	  else {
1123
            T(T_ENB_MAC_UE_UL_SCHEDULE_RETRANSMISSION, T_INT(module_idP), T_INT(CC_id), T_INT(rnti), T_INT(frameP),
Cedric Roux's avatar
Cedric Roux committed
1124
              T_INT(subframeP), T_INT(harq_pid), T_INT(mcs), T_INT(first_rb[CC_id]), T_INT(rb_table[rb_table_index]),
1125
              T_INT(round));
Cedric Roux's avatar
Cedric Roux committed
1126

1127
            LOG_D(MAC,"[eNB %d][PUSCH %d/%x] CC_id %d Frame %d subframeP %d Scheduled (PHICH) UE %d (mcs %d, first rb %d, nb_rb %d, rb_table_index %d, TBS %d, harq_pid %d,round %d)\n",
1128
                  module_idP,harq_pid,rnti,CC_id,frameP,subframeP,UE_id,mcs,
1129
                  first_rb[CC_id],rb_table[rb_table_index],
1130 1131 1132
                  rb_table_index,TBS,harq_pid,round);
	  }/* 
	  else if (round > 0) { //we schedule a retransmission
1133 1134 1135

            ndi = UE_template->oldNDI_UL[harq_pid];

1136
            if ((round&3)==0) {
1137
              mcs = openair_daq_vars.target_ue_ul_mcs;
1138
            } else {
1139 1140
              mcs = rvidx_tab[round&3] + 28; //not correct for round==4!

1141
            }
1142

1143
            LOG_I(MAC,"[eNB %d][PUSCH %d/%x] CC_id %d Frame %d subframeP %d Scheduled UE retransmission (mcs %d, first rb %d, nb_rb %d, harq_pid %d, round %d)\n",
1144
                  module_idP,UE_id,rnti,CC_id,frameP,subframeP,mcs,
1145
                  first_rb[CC_id],UE_template->nb_rb_ul[harq_pid],
1146
		  harq_pid, round);
1147 1148 1149 1150 1151

            rballoc = mac_xface->computeRIV(frame_parms->N_RB_UL,
                                            first_rb[CC_id],
                                            UE_template->nb_rb_ul[harq_pid]);
            first_rb[CC_id]+=UE_template->nb_rb_ul[harq_pid];  // increment for next UE allocation
1152 1153 1154 1155 1156 1157 1158
         
	    UE_list->eNB_UE_stats[CC_id][UE_id].num_retransmission_rx+=1;
	    UE_list->eNB_UE_stats[CC_id][UE_id].rbs_used_retx_rx=UE_template->nb_rb_ul[harq_pid];
	    UE_list->eNB_UE_stats[CC_id][UE_id].total_rbs_used_rx+=UE_template->nb_rb_ul[harq_pid];
	    UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs1=mcs;
	    UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs2=mcs;
	  }
1159
	   */
gauthier's avatar
gauthier committed
1160

1161 1162 1163 1164
        } // UE_is_to_be_scheduled
      } // UE is in PUSCH
    } // loop over UE_id
  } // loop of CC_id
1165 1166 1167
}

#ifdef CBA
1168
void schedule_ulsch_cba_rnti(module_id_t module_idP, unsigned char cooperation_flag, frame_t frameP, sub_frame_t subframeP, unsigned char sched_subframe, uint16_t *first_rb)
1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206
{

  eNB_MAC_INST *eNB = &eNB_mac_inst[module_idP];
  UE_list_t         *UE_list=&eNB->UE_list;
  //UE_TEMPLATE       *UE_template;
  void              *ULSCH_dci      = NULL;
  DCI_PDU *DCI_pdu;
  uint8_t CC_id=0;
  uint8_t rb_table_index=0, aggregation=2;
  uint32_t rballoc;
  uint8_t cba_group, cba_resources;
  uint8_t required_rbs[NUM_MAX_CBA_GROUP];
  int8_t num_cba_resources[NUM_MAX_CBA_GROUP];// , weight[NUM_MAX_CBA_GROUP]
  // the following vars should become a vector [MAX_NUM_CCs]
  LTE_DL_FRAME_PARMS   *frame_parms;
  int8_t available_rbs=0;
  uint8_t remaining_rbs=0;
  uint8_t allocated_rbs=0;
  uint8_t total_UEs=UE_list->num_UEs;
  uint8_t active_UEs[NUM_MAX_CBA_GROUP];
  uint8_t total_groups=eNB_mac_inst[module_idP].common_channels[CC_id].num_active_cba_groups;
  int     min_rb_unit=2;
  uint8_t cba_policy=CBA_ES;
  int     UE_id;
  uint8_t mcs[NUM_MAX_CBA_GROUP];
  uint32_t total_cba_resources=0;
  uint32_t total_rbs=0;
  // We compute the weight of each group and initialize some variables

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

  for (cba_group=0; cba_group<total_groups; cba_group++) {
    // UEs in PUSCH with traffic
    //    weight[cba_group] = 0;
    required_rbs[cba_group] = 0;
    num_cba_resources[cba_group]=0;
    active_UEs[cba_group]=0;
1207
    mcs[cba_group]=10;//openair_daq_vars.target_ue_ul_mcs;
1208 1209 1210 1211 1212
  }

  //LOG_D(MAC, "[eNB ] CBA granted ues are %d\n",granted_UEs );

  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
gauthier's avatar
gauthier committed
1213

1214 1215 1216 1217 1218
    frame_parms=mac_xface->get_lte_frame_parms(module_idP,CC_id);
    available_rbs=frame_parms->N_RB_DL-1-first_rb[CC_id];
    remaining_rbs=available_rbs;
    total_groups=eNB_mac_inst[module_idP].common_channels[CC_id].num_active_cba_groups;
    min_rb_unit=get_min_rb_unit(module_idP,CC_id);
gauthier's avatar
gauthier committed
1219

1220 1221
    if (available_rbs  < min_rb_unit )
      continue;
gauthier's avatar
gauthier committed
1222

1223 1224 1225 1226
    // remove this condition later
    // cba group template uses the exisitng UE template, and thus if a UE
    // is scheduled, the correspodning group can't be used for CBA
    // this can be fixed later
1227
    if (total_groups > 0)  {
1228 1229 1230
      DCI_pdu = &eNB_mac_inst[module_idP].common_channels[CC_id].DCI_pdu;

      for (cba_group=0;
1231
           (cba_group<total_groups)   > (1<<aggregation));
1232 1233 1234 1235 1236
           cba_group++) {
        // equal weight
        //weight[cba_group] = floor(total_UEs/active_groups);//find_num_active_UEs_in_cbagroup(module_idP, cba_group);

        for (UE_id=UE_list->head_ul; UE_id>=0; UE_id=UE_list->next_ul[UE_id]) {
1237
          if (UE_RNTI(module_idP,UE_id)==NOT_A_RNTI)
gauthier's avatar
gauthier committed
1238 1239
            continue;

1240 1241
          // simple UE identity based grouping
          if ((UE_id % total_groups) == cba_group) { // this could be simplifed to  active_UEs[UE_id % total_groups]++;
1242
            if ((mac_eNB_get_rrc_status(module_idP,rnti) > RRC_CONNECTED) &&
1243
                (UE_is_to_be_scheduled(module_idP,CC_id,UE_id) == 0)) {
1244
              active_UEs[cba_group]++;
1245
            }
1246 1247
          }

1248
          if (UE_list->UE_template[CC_id][UE_id].pre_assigned_mcs_ul <= 2) {
1249
            mcs[cba_group]= 8; // apply fixed scheduling
1250
          } else if ((UE_id % total_groups) == cba_group) {
1251
            mcs[cba_group]= cmin(mcs[cba_group],UE_list->UE_template[CC_id][UE_id].pre_assigned_mcs_ul);
1252
          }
1253 1254
        }

1255
        mcs[cba_group]= mcs[cba_group];//cmin(mcs[cba_group],openair_daq_vars.target_ue_ul_mcs);
1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318

        if (available_rbs < min_rb_unit )
          break;

        // If the group needs some resource
        // determine the total number of allocations (one or multiple DCIs): to be refined
        if ((active_UEs[cba_group] > 0) && (eNB_mac_inst[module_idP].common_channels[CC_id].cba_rnti[cba_group] != 0)) {
          // to be refined in case of : total_UEs >> weight[cba_group]*available_rbs

          switch(cba_policy) {
          case CBA_ES:
            required_rbs[cba_group] = (uint8_t)floor(available_rbs/total_groups); // allocate equally among groups
            num_cba_resources[cba_group]=1;
            break;

            // can't have more than one allocation for the same group/UE
            /*  case CBA_ES_S:
            required_rbs[cba_group] = (uint8_t)floor(available_rbs/total_groups); // allocate equally among groups
            if (required_rbs[cba_group] > min_rb_unit)
            num_cba_resources[cba_group]=(uint8_t)(required_rbs[cba_group]/ min_rb_unit);
            break;*/
          case CBA_PF:
            required_rbs[cba_group] = (uint8_t)floor((active_UEs[cba_group]*available_rbs)/total_UEs);
            num_cba_resources[cba_group]=1;
            break;
            /* case CBA_PF_S:
            required_rbs[cba_group] = (uint8_t)ceil((active_UEs[cba_group]*available_rbs)/total_UEs);
            if (required_rbs[cba_group] > min_rb_unit)
            num_cba_resources[cba_group]=(uint8_t) floor(required_rbs[cba_group] / min_rb_unit);
            break;*/

          default:
            LOG_W(MAC,"unknown CBA policy\n");
            break;
          }

          total_cba_resources+=num_cba_resources[cba_group];
          total_rbs+=required_rbs[cba_group];

          /*  while ((remaining_rbs < required_rbs[cba_group]) &&
          (required_rbs[cba_group] > 0) &&
          (required_rbs[cba_group] < min_rb_unit ))
          required_rbs[cba_group]--;
           */

          /*
          while (rb_table[rb_table_index] < required_rbs[cba_group])
          rb_table_index++;

          while (rb_table[rb_table_index] > remaining_rbs )
          rb_table_index--;

          remaining_rbs-=rb_table[rb_table_index];
          required_rbs[cba_group]=rb_table[rb_table_index];
           */
          //    num_cba_resources[cba_group]=1;

        }
      }

      // phase 2 reduce the number of cba allocations among the groups
      cba_group=0;

1319
      if (total_cba_resources <= 0) {
1320
        return;
1321
      }
1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334

      // increase rb if any left: to be done
      cba_group=0;

      while (total_rbs  < available_rbs - 1 ) {
        required_rbs[cba_group%total_groups]++;
        total_rbs++;
        cba_group++;
      }

      // phase 3:
      for (cba_group=0; cba_group<total_groups; cba_group++) {

1335
        LOG_N(MAC,
1336
              "[eNB %d] CC_id %d Frame %d, subframe %d: cba group %d active_ues %d total groups %d mcs %d, available/required rb (%d/%d), num resources %d, ncce required %d \n",