eNB_scheduler_RA.c 71.4 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
 */
knopp's avatar
knopp committed
21

22
/*! \file eNB_scheduler_RA.c
23
 * \brief primitives used for random access
knopp's avatar
knopp committed
24 25 26 27 28 29 30 31 32
 * \author  Navid Nikaein and Raymond Knopp
 * \date 2010 - 2014
 * \email: navid.nikaein@eurecom.fr
 * \version 1.0
 * @ingroup _mac

 */

#include "assertions.h"
33
#include "platform_types.h"
knopp's avatar
knopp committed
34 35
#include "PHY/defs.h"
#include "PHY/extern.h"
gauthier's avatar
gauthier committed
36
#include "msc.h"
knopp's avatar
knopp committed
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

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

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

#include "LAYER2/MAC/proto.h"
#include "UTIL/LOG/log.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"

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

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

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

61
#include "SIMULATION/TOOLS/defs.h" // for taus
knopp's avatar
knopp committed
62

63
#include "T.h"
64

65
void add_msg3(module_id_t module_idP,int CC_id, RA_TEMPLATE *RA_template, frame_t frameP, sub_frame_t subframeP) {
66 67

  eNB_MAC_INST                    *eNB = RC.mac[module_idP];
68
  COMMON_channels_t               *cc  = &eNB->common_channels[CC_id];
69
  uint8_t                         j;
70
  nfapi_ul_config_request_t      *ul_req;
71
  nfapi_ul_config_request_pdu_t  *ul_config_pdu;
72
  nfapi_ul_config_request_body_t *ul_req_body;
73 74 75
  nfapi_hi_dci0_request_body_t   *hi_dci0_req;
  nfapi_hi_dci0_request_pdu_t    *hi_dci0_pdu;

76
  uint8_t rvseq[4] = {0,2,3,1};
77 78


79 80 81 82
  hi_dci0_req   = &eNB->HI_DCI0_req[CC_id].hi_dci0_request_body;
  ul_req        = &eNB->UL_req_tmp[CC_id][RA_template->Msg3_subframe];
  ul_req_body   = &ul_req->ul_config_request_body;
  AssertFatal(RA_template->RA_active == TRUE,"RA is not active for RA %X\n",RA_template->rnti);
83

84
#ifdef Rel14
85
  if (RA_template->rach_resource_type>0) {
86 87
    LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d CE level %d is active, Msg3 in (%d,%d)\n",
	  module_idP,frameP,subframeP,CC_id,RA_template->rach_resource_type-1,
88
	  RA_template->Msg3_frame,RA_template->Msg3_subframe);
89 90
    LOG_D(MAC,"Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d)\n",
	  frameP,subframeP,RA_template->Msg3_frame,RA_template->Msg3_subframe,RA_template->msg3_nb_rb,RA_template->msg3_round);
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120

    ul_config_pdu                                                                  = &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus]; 
    
    memset((void*)ul_config_pdu,0,sizeof(nfapi_ul_config_request_pdu_t));
    ul_config_pdu->pdu_type                                                        = NFAPI_UL_CONFIG_ULSCH_PDU_TYPE; 
    ul_config_pdu->pdu_size                                                        = (uint8_t)(2+sizeof(nfapi_ul_config_ulsch_pdu));
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.handle                                 = eNB->ul_handle++;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti                                   = RA_template->rnti;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start                   = narrowband_to_first_rb(cc,RA_template->msg34_narrowband)+RA_template->msg3_first_rb;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks              = RA_template->msg3_nb_rb;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.modulation_type                        = 2;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.cyclic_shift_2_for_drms                = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_enabled_flag         = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_bits                 = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.new_data_indication                    = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.redundancy_version                     = rvseq[RA_template->msg3_round];
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number                    = ((10*RA_template->Msg3_frame)+RA_template->Msg3_subframe)&7;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.ul_tx_mode                             = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.current_tx_nb                          = 0;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.n_srs                                  = 1;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.size                                   = get_TBS_UL(RA_template->msg3_mcs,
												RA_template->msg3_nb_rb);
    // Re13 fields
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.ue_type                               = RA_template->rach_resource_type>2 ? 2 : 1;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.total_number_of_repetitions           = 1;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.repetition_number                     = 1;
    ul_config_pdu->ulsch_pdu.ulsch_pdu_rel13.initial_transmission_sf_io            = (RA_template->Msg3_frame*10)+RA_template->Msg3_subframe;
    ul_req_body->number_of_pdus++;
  } //  if (RA_template->rach_resource_type>0) {	 
  else
121
#endif
122
    {
123 124
      LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d RA is active, Msg3 in (%d,%d)\n",
	    module_idP,frameP,subframeP,CC_id,RA_template->Msg3_frame,RA_template->Msg3_subframe);
125
	    
126 127 128
      LOG_D(MAC,"Frame %d, Subframe %d Adding Msg3 UL Config Request for (%d,%d) : (%d,%d,%d)\n",
	    frameP,subframeP,RA_template->Msg3_frame,RA_template->Msg3_subframe,
	    RA_template->msg3_nb_rb,RA_template->msg3_first_rb,RA_template->msg3_round);
129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167
      
      ul_config_pdu                                                                  = &ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus]; 
      
      memset((void*)ul_config_pdu,0,sizeof(nfapi_ul_config_request_pdu_t));
      ul_config_pdu->pdu_type                                                        = NFAPI_UL_CONFIG_ULSCH_PDU_TYPE; 
      ul_config_pdu->pdu_size                                                        = (uint8_t)(2+sizeof(nfapi_ul_config_ulsch_pdu));
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.handle                                 = eNB->ul_handle++;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti                                   = RA_template->rnti;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.resource_block_start                   = RA_template->msg3_first_rb;
      AssertFatal(RA_template->msg3_nb_rb > 0, "nb_rb = 0\n");
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.number_of_resource_blocks              = RA_template->msg3_nb_rb;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.modulation_type                        = 2;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.cyclic_shift_2_for_drms                = 0;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_enabled_flag         = 0;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.frequency_hopping_bits                 = 0;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.new_data_indication                    = 0;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.redundancy_version                     = rvseq[RA_template->msg3_round];
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.harq_process_number                    = subframe2harqpid(cc,RA_template->Msg3_frame,RA_template->Msg3_subframe);
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.ul_tx_mode                             = 0;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.current_tx_nb                          = 0;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.n_srs                                  = 1;
      ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.size                                   = get_TBS_UL(10,RA_template->msg3_nb_rb);
      ul_req_body->number_of_pdus++;
      // save UL scheduling information for preprocessor
      for (j=0;j<RA_template->msg3_nb_rb;j++) cc->vrb_map_UL[RA_template->msg3_first_rb+j]=1;
      
      
      if (RA_template->msg3_round != 0) { // program HI too
	hi_dci0_pdu                                                         = &hi_dci0_req->hi_dci0_pdu_list[hi_dci0_req->number_of_dci+hi_dci0_req->number_of_hi]; 	
	memset((void*)hi_dci0_pdu,0,sizeof(nfapi_hi_dci0_request_pdu_t));
	hi_dci0_pdu->pdu_type                                               = NFAPI_HI_DCI0_HI_PDU_TYPE; 
	hi_dci0_pdu->pdu_size                                               = 2+sizeof(nfapi_hi_dci0_hi_pdu);
	hi_dci0_pdu->hi_pdu.hi_pdu_rel8.resource_block_start                = RA_template->msg3_first_rb; 
	hi_dci0_pdu->hi_pdu.hi_pdu_rel8.cyclic_shift_2_for_drms             = 0;
	hi_dci0_pdu->hi_pdu.hi_pdu_rel8.hi_value                            = 0;
	hi_dci0_req->number_of_hi++;
	// save UL scheduling information for preprocessor
	for (j=0;j<RA_template->msg3_nb_rb;j++) cc->vrb_map_UL[RA_template->msg3_first_rb+j]=1;
	
168 169
	LOG_D(MAC,"[eNB %d][PUSCH-RA %x] CC_id %d Frame %d subframeP %d Scheduled (PHICH) RA (mcs %d, first rb %d, nb_rb %d,round %d)\n",
	      module_idP,RA_template->rnti,CC_id,frameP,subframeP,10,
170 171 172 173
	      1,1,
	      RA_template->msg3_round-1);
      } //       if (RA_template->msg3_round != 0) { // program HI too
    } // non-BL/CE UE case
174 175
}

176
void generate_Msg2(module_id_t module_idP,int CC_idP,frame_t frameP,sub_frame_t subframeP,RA_TEMPLATE *RA_template) {
knopp's avatar
knopp committed
177

178 179
  eNB_MAC_INST                    *eNB = RC.mac[module_idP];
  COMMON_channels_t               *cc  = eNB->common_channels;
180
 
181 182 183 184 185
  uint8_t                         *vrb_map;
  int                             first_rb;
  int                             N_RB_DL;
  nfapi_dl_config_request_pdu_t   *dl_config_pdu;
  nfapi_tx_request_pdu_t          *TX_req;
186
  nfapi_dl_config_request_body_t *dl_req;
gauthier's avatar
gauthier committed
187

188 189 190 191 192
  vrb_map       = cc[CC_idP].vrb_map;
  dl_req        = &eNB->DL_req[CC_idP].dl_config_request_body;
  dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu]; 
  N_RB_DL       = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);  

193 194 195 196 197
#ifdef Rel14
  int rmax            = 0;
  int rep             = 0; 
  int reps            = 0;
  int num_nb          = 0;
198

199
  first_rb        = 0;
200 201
  struct PRACH_ConfigSIB_v1310 *ext4_prach;
  PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
202
  PRACH_ParametersCE_r13_t *p[4]={NULL,NULL,NULL,NULL};
203

204 205 206 207 208
  uint16_t absSF      = (10*frameP)+subframeP;
  uint16_t absSF_Msg2 = (10*RA_template->Msg2_frame)+RA_template->Msg2_subframe;

  if (absSF>absSF_Msg2) return; // we're not ready yet, need to be to start ==  
  
209
  if (cc[CC_idP].radioResourceConfigCommon_BR) {
210

211
    ext4_prach                 = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
212 213 214 215 216 217 218 219 220 221 222
    prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;
        
    switch (prach_ParametersListCE_r13->list.count) {
    case 4:
      p[3]=prach_ParametersListCE_r13->list.array[3];
    case 3:
      p[2]=prach_ParametersListCE_r13->list.array[2];
    case 2:
      p[1]=prach_ParametersListCE_r13->list.array[1];
    case 1:
      p[0]=prach_ParametersListCE_r13->list.array[0];
223
      break;
224
    default:
225 226
      AssertFatal(1==0,"Illegal count for prach_ParametersListCE_r13 %d\n",(int)prach_ParametersListCE_r13->list.count);
      break;
227
    }
228
  }
229 230 231 232 233 234 235 236 237 238 239 240

  if (RA_template->rach_resource_type > 0) {
    
    // This uses an MPDCCH Type 2 common allocation according to Section 9.1.5 36-213
    // Parameters:
    //    p=2+4 PRB set (number of PRB pairs 3)
    //    rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3
    //    if CELevel = 0,1 => Table 9.1.5-1b for MPDCCH candidates
    //    if CELevel = 2,3 => Table 9.1.5-2b for MPDCCH candidates
    //    distributed transmission
    
    // rmax from SIB2 information
241 242 243 244
    AssertFatal(rmax<9,"rmax>8!\n");
    rmax           = 1<<p[RA_template->rach_resource_type-1]->mpdcch_NumRepetition_RA_r13;
    // choose r1 by default for RAR (Table 9.1.5-5)
    rep            = 0; 
245 246 247 248 249
    // get actual repetition count from Table 9.1.5-3
    reps           = (rmax<=8)?(1<<rep):(rmax>>(3-rep));
    // get narrowband according to higher-layer config 
    num_nb = p[RA_template->rach_resource_type-1]->mpdcch_NarrowbandsToMonitor_r13.list.count;
    RA_template->msg2_narrowband = *p[RA_template->rach_resource_type-1]->mpdcch_NarrowbandsToMonitor_r13.list.array[RA_template->preamble_index%num_nb];
250
    first_rb = narrowband_to_first_rb(&cc[CC_idP],RA_template->msg2_narrowband);
251 252
    
    if ((RA_template->msg2_mpdcch_repetition_cnt == 0) &&
253
	(mpdcch_sf_condition(eNB,CC_idP,frameP,subframeP,rmax,TYPE2,-1)>0)){
254
      // MPDCCH configuration for RAR
knopp's avatar
knopp committed
255
      LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming MPDCCH %d repetitions\n",
256
	    module_idP,frameP,subframeP,reps);
257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306
      
      
      memset((void*)dl_config_pdu,0,sizeof(nfapi_dl_config_request_pdu_t));
      dl_config_pdu->pdu_type                                                                  = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE; 
      dl_config_pdu->pdu_size                                                                  = (uint8_t)(2+sizeof(nfapi_dl_config_mpdcch_pdu));
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format                                    = (RA_template->rach_resource_type > 1) ? 11 : 10;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band                            = RA_template->msg2_narrowband;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_prb_pairs                           = 6;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment                     = 0; // Note: this can be dynamic
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_tansmission_type                       = 1; // imposed (9.1.5 in 213) for Type 2 Common search space  
      AssertFatal(cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13!=NULL,
		  "cc[CC_id].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 is null\n");
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol                                  = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index                                    = 0;  // Note: this should be dynamic
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level                             = 16; // OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type                                     = 2;  // RA-RNTI
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti                                          = RA_template->RA_rnti;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode                                       = (RA_template->rach_resource_type < 3) ? 1 : 2;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init                          = cc[CC_idP].physCellId;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.initial_transmission_sf_io                    = (frameP*10)+subframeP;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power                            = 6000; // 0dB
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding                         = getRIV(6,0,6);  // Note: still to be checked if it should not be (getRIV(N_RB_DL,first_rb,6)) : Check nFAPI specifications and what is done L1 with this parameter
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs                                           = 4; // adjust according to size of RAR, 208 bits with N1A_PRB=3
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels                        = 4; // fix to 4 for now
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version                            = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator                            = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process                                  = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length                                   = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi                                          = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag                                      = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi                                           = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_resource_offset                          = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_subframe_repetition_number                = rep; 
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc                                           = 1;// N1A_PRB=3 (36.212); => 208 bits for mcs=4, choose mcs according t message size TBD
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index_length              = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index                     = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.allocate_prach_flag                           = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index                                = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index                              = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level                             = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request                                   = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag    = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity         = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.frequency_hopping_enabled_flag                = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication                             = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding            = 0; // this is not needed by OAI L1, but should be filled in
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_tx_antenna_ports                    = 1;
      RA_template->msg2_mpdcch_repetition_cnt++;
      dl_req->number_pdu++;
307 308
      RA_template->Msg2_subframe = (RA_template->Msg2_subframe+9)%10;

309
    } //repetition_count==0 && SF condition met
310
    if (RA_template->msg2_mpdcch_repetition_cnt>0) { // we're in a stream of repetitions
knopp's avatar
knopp committed
311
      LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, MPDCCH repetition %d\n",
312 313
	    module_idP,frameP,subframeP,RA_template->msg2_mpdcch_repetition_cnt);

314 315 316 317 318 319 320 321 322 323
      if (RA_template->msg2_mpdcch_repetition_cnt==reps) { // this is the last mpdcch repetition
	if (cc[CC_idP].tdd_Config==NULL) { // FDD case
	  // wait 2 subframes for PDSCH transmission
	  if (subframeP>7) RA_template->Msg2_frame = (frameP+1)&1023;
	  else             RA_template->Msg2_frame = frameP;
	  RA_template->Msg2_subframe               = (subframeP+2)%10; // +2 is the "n+x" from Section 7.1.11  in 36.213
	}
	else {
	  AssertFatal(1==0,"TDD case not done yet\n");
	}
324 325 326
      }// mpdcch_repetition_count == reps
      RA_template->msg2_mpdcch_repetition_cnt++;	      

327 328
      if ((RA_template->Msg2_frame == frameP) && (RA_template->Msg2_subframe == subframeP)) {
	// Program PDSCH
knopp's avatar
knopp committed
329
	LOG_D(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : In generate_Msg2, Programming PDSCH\n",
330
	      module_idP,frameP,subframeP);
331 332 333 334 335 336 337 338
	RA_template->generate_rar = 0;	      
	
	dl_config_pdu                                                                  = &dl_req->dl_config_pdu_list[dl_req->number_pdu]; 
	memset((void*)dl_config_pdu,0,sizeof(nfapi_dl_config_request_pdu_t));
	dl_config_pdu->pdu_type                                                        = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE; 
	dl_config_pdu->pdu_size                                                        = (uint8_t)(2+sizeof(nfapi_dl_config_dlsch_pdu));
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index                              = eNB->pdu_index[CC_idP];
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti                                   = RA_template->RA_rnti;
339
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type               = 2;   
340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;   // localized
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding                  = getRIV(N_RB_DL,first_rb,6);
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation                             = 2; //QPSK
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version                     = 0;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks                       = 1;// first block
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag  = 0;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme                    = (cc->p_eNB==1 ) ? 0 : 1;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers                       = 1;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands                     = 1;
	//	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index                         = ;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity                   = 1;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa                                     = 4; // 0 dB
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index               = 0;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap                                   = 0;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb                                   = get_subbandsize(cc->mib->message.dl_Bandwidth); // ignored
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode                      = (cc->p_eNB==1 ) ? 1 : 2;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband                 = 1;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector                          = 1;
	//	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector                    = ; 
359 360 361 362

	// Rel10 fields
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start                           = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
	// Rel13 fields
363 364 365 366 367 368 369 370
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type                               = (RA_template->rach_resource_type < 3) ? 1 : 2;;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type                    = 2;  // not SI message
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.initial_transmission_sf_io            = (10*frameP)+subframeP;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag                       = 0;
	dl_req->number_pdu++;
	
	// Program UL processing for Msg3, same as regular LTE
	get_Msg3alloc(&cc[CC_idP],subframeP,frameP,&RA_template->Msg3_frame,&RA_template->Msg3_subframe);
371
	add_msg3(module_idP,CC_idP, RA_template,frameP,subframeP);
372 373
	fill_rar_br(eNB,CC_idP,RA_template,frameP,subframeP,cc[CC_idP].RAR_pdu.payload,RA_template->rach_resource_type-1);
	// DL request
Cedric Roux's avatar
Cedric Roux committed
374
	eNB->TX_req[CC_idP].sfn_sf                                            = (frameP<<4)+subframeP;
375 376 377 378 379 380 381 382 383 384 385 386
	TX_req                                                                = &eNB->TX_req[CC_idP].tx_request_body.tx_pdu_list[eNB->TX_req[CC_idP].tx_request_body.number_of_pdus]; 		     
	TX_req->pdu_length                                                    = 7;  // This should be changed if we have more than 1 preamble 
	TX_req->pdu_index                                                     = eNB->pdu_index[CC_idP]++;
	TX_req->num_segments                                                  = 1;
	TX_req->segments[0].segment_length                                    = 7;
	TX_req->segments[0].segment_data                                      = cc[CC_idP].RAR_pdu.payload;
	eNB->TX_req[CC_idP].tx_request_body.number_of_pdus++;
      }
    }      
    
  }		
  else
387
#endif
388
    {
389

390
      if ((RA_template->Msg2_frame == frameP) && (RA_template->Msg2_subframe == subframeP)) {
391
	LOG_I(MAC,"[eNB %d] CC_id %d Frame %d, subframeP %d: Generating RAR DCI, RA_active %d format 1A (%d,%d))\n",
392 393 394 395 396
	      module_idP, CC_idP, frameP, subframeP,
	      RA_template->RA_active,
	      
	      RA_template->RA_dci_fmt1,
	      RA_template->RA_dci_size_bits1);
397 398

	// Allocate 4 PRBS starting in RB 0
399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421
	first_rb = 0;
	vrb_map[first_rb] = 1;
	vrb_map[first_rb+1] = 1;
	vrb_map[first_rb+2] = 1;
	vrb_map[first_rb+3] = 1;
	
	memset((void*)dl_config_pdu,0,sizeof(nfapi_dl_config_request_pdu_t));
	dl_config_pdu->pdu_type                                                          = NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE; 
	dl_config_pdu->pdu_size                                                          = (uint8_t)(2+sizeof(nfapi_dl_config_dci_dl_pdu));
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format                             = NFAPI_DL_DCI_FORMAT_1A;
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level                      = 4;
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti                                   = RA_template->RA_rnti;
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type                              = 2;    // RA-RNTI : see Table 4-10 from SCF082 - nFAPI specifications
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power                     = 6000; // equal to RS power
	
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process                           = 0;
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tpc                                    = 1; // no TPC
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.new_data_indicator_1                   = 1;
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_1                                  = 0;
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.redundancy_version_1                   = 0;
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.virtual_resource_block_assignment_flag = 0;
	
	dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding                  = getRIV(N_RB_DL,first_rb,4);      
422 423

	// This checks if the above DCI allocation is feasible in current subframe
424
	if (!CCE_allocation_infeasible(module_idP,CC_idP,0,subframeP,dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level,RA_template->RA_rnti)) {
425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459
	  LOG_D(MAC,"Frame %d: Subframe %d : Adding common DCI for RA_RNTI %x\n",
		frameP,subframeP,RA_template->RA_rnti);
	  dl_req->number_dci++;
	  dl_req->number_pdu++;
	  
	  dl_config_pdu                                                                  = &dl_req->dl_config_pdu_list[dl_req->number_pdu]; 
	  memset((void*)dl_config_pdu,0,sizeof(nfapi_dl_config_request_pdu_t));
	  dl_config_pdu->pdu_type                                                        = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE; 
	  dl_config_pdu->pdu_size                                                        = (uint8_t)(2+sizeof(nfapi_dl_config_dlsch_pdu));
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index                              = eNB->pdu_index[CC_idP];
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti                                   = RA_template->RA_rnti;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type               = 2;   // format 1A/1B/1D
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;   // localized
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding                  = getRIV(N_RB_DL,first_rb,4);
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation                             = 2; //QPSK
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version                     = 0;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks                       = 1;// first block
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag  = 0;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme                    = (cc->p_eNB==1 ) ? 0 : 1;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers                       = 1;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands                     = 1;
	  //	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index                         = ;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity                   = 1;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa                                     = 4; // 0 dB
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index               = 0;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap                                   = 0;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb                                   = get_subbandsize(cc->mib->message.dl_Bandwidth); // ignored
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode                      = (cc->p_eNB==1 ) ? 1 : 2;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband                 = 1;
	  dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector                          = 1;
	  //	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector                    = ; 
	  dl_req->number_pdu++;
	  
	  // Program UL processing for Msg3
	  get_Msg3alloc(&cc[CC_idP],subframeP,frameP,&RA_template->Msg3_frame,&RA_template->Msg3_subframe);
460

knopp's avatar
knopp committed
461
	  LOG_D(MAC,"Frame %d, Subframe %d: Setting Msg3 reception for Frame %d Subframe %d\n",
462
		frameP,subframeP,RA_template->Msg3_frame,RA_template->Msg3_subframe);
463 464
	  
	  fill_rar(module_idP,CC_idP,frameP,cc[CC_idP].RAR_pdu.payload,N_RB_DL,7);
465 466
	  add_msg3(module_idP,CC_idP, RA_template,frameP,subframeP);

467
	  // DL request
Cedric Roux's avatar
Cedric Roux committed
468
	  eNB->TX_req[CC_idP].sfn_sf                                             = (frameP<<4)+subframeP;
469 470 471 472 473 474 475 476 477 478 479
	  TX_req                                                                = &eNB->TX_req[CC_idP].tx_request_body.tx_pdu_list[eNB->TX_req[CC_idP].tx_request_body.number_of_pdus]; 		     
	  TX_req->pdu_length                                                    = 7;  // This should be changed if we have more than 1 preamble 
	  TX_req->pdu_index                                                     = eNB->pdu_index[CC_idP]++;
	  TX_req->num_segments                                                  = 1;
	  TX_req->segments[0].segment_length                                    = 7;
	  TX_req->segments[0].segment_data                                      = cc[CC_idP].RAR_pdu.payload;
	  eNB->TX_req[CC_idP].tx_request_body.number_of_pdus++;
	} // PDCCH CCE allocation is feasible
      } // Msg2 frame/subframe condition
    } // else BL/CE
}
480

481
void generate_Msg4(module_id_t module_idP,int CC_idP,frame_t frameP,sub_frame_t subframeP,RA_TEMPLATE *RA_template){
gauthier's avatar
gauthier committed
482

483

484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502
  eNB_MAC_INST                    *eNB = RC.mac[module_idP];
  COMMON_channels_t               *cc  = eNB->common_channels;
  int16_t                         rrc_sdu_length;
  int                             UE_id           = -1;
  uint16_t                        msg4_padding;
  uint16_t                        msg4_post_padding;
  uint16_t                        msg4_header;

  uint8_t                         *vrb_map;
  int                             first_rb;
  int                             N_RB_DL;
  nfapi_dl_config_request_pdu_t   *dl_config_pdu;
  nfapi_ul_config_request_pdu_t   *ul_config_pdu;
  nfapi_tx_request_pdu_t          *TX_req;
  UE_list_t                       *UE_list=&eNB->UE_list;
  nfapi_dl_config_request_body_t *dl_req;
  nfapi_ul_config_request_body_t *ul_req;
  uint8_t                         lcid;
  uint8_t                         offset;
503

gauthier's avatar
gauthier committed
504

505 506 507 508
#ifdef Rel14
  int rmax            = 0;
  int rep             = 0; 
  int reps            = 0;
gauthier's avatar
gauthier committed
509

510

511 512 513 514 515 516 517 518
  first_rb        = 0;
  struct PRACH_ConfigSIB_v1310 *ext4_prach;
  struct PUCCH_ConfigCommon_v1310 *ext4_pucch;
  PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13;
  struct N1PUCCH_AN_InfoList_r13 *pucch_N1PUCCH_AN_InfoList_r13;
  PRACH_ParametersCE_r13_t *p[4]={NULL,NULL,NULL,NULL};
  int pucchreps[4]={1,1,1,1};
  int n1pucchan[4]={0,0,0,0};
gauthier's avatar
gauthier committed
519

520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564
  if (cc[CC_idP].radioResourceConfigCommon_BR) {

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

    switch (prach_ParametersListCE_r13->list.count) {
    case 4:
      p[3]         = prach_ParametersListCE_r13->list.array[3];
      n1pucchan[3] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[3]; 
      AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level3_r13!=NULL,"pucch_NumRepetitionCE_Msg4_Level3 shouldn't be NULL\n");
      pucchreps[3] = (int)(4<<*ext4_pucch->pucch_NumRepetitionCE_Msg4_Level3_r13);
      
    case 3:
      p[2]         = prach_ParametersListCE_r13->list.array[2];
      n1pucchan[2] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[2]; 
      AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13!=NULL,"pucch_NumRepetitionCE_Msg4_Level2 shouldn't be NULL\n");
      pucchreps[2] = (int)(4<<*ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13);
    case 2:
      p[1]         =prach_ParametersListCE_r13->list.array[1];
      n1pucchan[1] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[1]; 
      AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13!=NULL,"pucch_NumRepetitionCE_Msg4_Level1 shouldn't be NULL\n");
      pucchreps[1] = (int)(1<<*ext4_pucch->pucch_NumRepetitionCE_Msg4_Level1_r13);
    case 1:
      p[0]         = prach_ParametersListCE_r13->list.array[0];
      n1pucchan[0] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[0]; 
      AssertFatal(ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13!=NULL,"pucch_NumRepetitionCE_Msg4_Level0 shouldn't be NULL\n");
      pucchreps[0] = (int)(1<<*ext4_pucch->pucch_NumRepetitionCE_Msg4_Level0_r13);
    default:
      AssertFatal(1==0,"Illegal count for prach_ParametersListCE_r13 %d\n",prach_ParametersListCE_r13->list.count);
    }
  }
#endif

  vrb_map       = cc[CC_idP].vrb_map;
  
  dl_req        = &eNB->DL_req[CC_idP].dl_config_request_body;
  dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu]; 
  N_RB_DL       = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);
565

566 567 568
  UE_id = find_UE_id(module_idP,RA_template->rnti);
  AssertFatal(UE_id>=0,"Can't find UE for t-crnti\n");
  
569 570
  // set HARQ process round to 0 for this UE
  
571 572
  if (cc->tdd_Config) RA_template->harq_pid = ((frameP*10)+subframeP)%10;
  else RA_template->harq_pid = ((frameP*10)+subframeP)&7;
573

574 575 576 577 578 579 580 581 582 583 584 585
  
  // Get RRCConnectionSetup for Piggyback
  rrc_sdu_length = mac_rrc_data_req(module_idP,
				    CC_idP,
				    frameP,
				    CCCH,
				    1, // 1 transport block
				    &cc[CC_idP].CCCH_pdu.payload[0],
				    ENB_FLAG_YES,
				    module_idP,
				    0); // not used in this case
  
586
  AssertFatal(rrc_sdu_length>0,
587 588 589
	      "[MAC][eNB Scheduler] CCCH not allocated\n");
  
  
knopp's avatar
knopp committed
590
  LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: UE_id %d, rrc_sdu_length %d\n",
591 592
	module_idP, CC_idP, frameP, subframeP,UE_id, rrc_sdu_length);
  
593 594
  
#ifdef Rel14
595 596 597
  if (RA_template->rach_resource_type>0) {
    
    // Generate DCI + repetitions first
598
    // This uses an MPDCCH Type 2 allocation according to Section 9.1.5 36-213, Type2 common allocation according to Table 7.1-8 (36-213)
599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614
    // Parameters:
    //    p=2+4 PRB set (number of PRB pairs 6)
    //    rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3
    //    if CELevel = 0,1 => Table 9.1.5-1b for MPDCCH candidates
    //    if CELevel = 2,3 => Table 9.1.5-2b for MPDCCH candidates
    //    distributed transmission
    
    // rmax from SIB2 information
    rmax           = p[RA_template->rach_resource_type-1]->mpdcch_NumRepetition_RA_r13;
    AssertFatal(rmax>=4,"choose rmax>=4 for enough repeititions, or reduce rep to 1 or 2\n");

    // choose r3 by default for Msg4 (this is ok from table 9.1.5-3 for rmax = >=4, if we choose rmax <4 it has to be less
    rep            = 2; 
    // get actual repetition count from Table 9.1.5-3
    reps           = (rmax<=8)?(1<<rep):(rmax>>(3-rep));
    // get first narrowband
615 616
    first_rb = narrowband_to_first_rb(&cc[CC_idP],RA_template->msg34_narrowband);

617
    if ((RA_template->msg4_mpdcch_repetition_cnt == 0) &&
618
    (mpdcch_sf_condition(eNB,CC_idP,frameP,subframeP,rmax,TYPE2,-1)>0)){
619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644
      // MPDCCH configuration for RAR
      
      memset((void*)dl_config_pdu,0,sizeof(nfapi_dl_config_request_pdu_t));
      dl_config_pdu->pdu_type                                                                  = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE; 
      dl_config_pdu->pdu_size                                                                  = (uint8_t)(2+sizeof(nfapi_dl_config_mpdcch_pdu));
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format                                    = (RA_template->rach_resource_type > 1) ? 11 : 10;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band                            = RA_template->msg34_narrowband;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_prb_pairs                           = 6;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment                     = 0; // Note: this can be dynamic
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_tansmission_type                       = 1;
      AssertFatal(cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13!=NULL,
		  "cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13 is null\n");
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol                                  = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index                                    = 0;  // Note: this should be dynamic
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level                             = 16; // OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type                                     = 0;  // t-C-RNTI
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti                                          = RA_template->RA_rnti;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode                                       = (RA_template->rach_resource_type < 3) ? 1 : 2;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init                          = cc[CC_idP].physCellId;  /// Check this is still N_id_cell for type2 common
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.initial_transmission_sf_io                    = (frameP*10)+subframeP;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power                            = 6000; // 0dB
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding                         = getRIV(6,0,6);// check if not getRIV(N_RB_DL,first_rb,6);
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs                                           = 4; // adjust according to size of Msg4, 208 bits with N1A_PRB=3
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels                        = 4; // fix to 4 for now
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version                            = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator                            = 0;
645
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process                                  = RA_template->harq_pid;
646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length                                   = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi                                          = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag                                      = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi                                           = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_resource_offset                          = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_subframe_repetition_number                = rep; 
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc                                           = 1;// N1A_PRB=3; => 208 bits
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index_length              = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index                     = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.allocate_prach_flag                           = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index                                = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index                              = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level                             = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request                                   = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag    = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity         = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.frequency_hopping_enabled_flag                = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication                             = 0;
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding            = 0; // this is not needed by OAI L1, but should be filled in
      dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_tx_antenna_ports                    = 1;
      RA_template->msg4_mpdcch_repetition_cnt++;
      dl_req->number_pdu++;
      
    } //repetition_count==0 && SF condition met
    else if (RA_template->msg4_mpdcch_repetition_cnt>0) { // we're in a stream of repetitions
      RA_template->msg4_mpdcch_repetition_cnt++;	      
      if (RA_template->msg4_mpdcch_repetition_cnt==reps) { // this is the last mpdcch repetition
	if (cc[CC_idP].tdd_Config==NULL) { // FDD case
	  // wait 2 subframes for PDSCH transmission
	  if (subframeP>7) RA_template->Msg4_frame = (frameP+1)&1023;
	  else             RA_template->Msg4_frame = frameP;
	  RA_template->Msg4_subframe               = (subframeP+2)%10; 
	}
	else {
	  AssertFatal(1==0,"TDD case not done yet\n");
	}
      } // mpdcch_repetition_count == reps
      if ((RA_template->Msg4_frame == frameP) && (RA_template->Msg4_subframe == subframeP)) {
	
	// Program PDSCH
	
knopp's avatar
knopp committed
688
	LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating Msg4 BR with RRC Piggyback (ce_level %d RNTI %x)\n",
689
	      module_idP, CC_idP, frameP, subframeP,RA_template->rach_resource_type-1,RA_template->rnti);
690

691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717
	AssertFatal(1==0,"Msg4 generation not finished for BL/CE UE\n");
	dl_config_pdu                                                                  = &dl_req->dl_config_pdu_list[dl_req->number_pdu]; 
	memset((void*)dl_config_pdu,0,sizeof(nfapi_dl_config_request_pdu_t));
	dl_config_pdu->pdu_type                                                        = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE; 
	dl_config_pdu->pdu_size                                                        = (uint8_t)(2+sizeof(nfapi_dl_config_dlsch_pdu));
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index                              = eNB->pdu_index[CC_idP];
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti                                   = RA_template->rnti;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type               = 2;   // format 1A/1B/1D
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;   // localized
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding                  = getRIV(N_RB_DL,first_rb,6);  // check that this isn't getRIV(6,0,6)
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation                             = 2; //QPSK
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version                     = 0;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks                       = 1;// first block
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag  = 0;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme                    = (cc->p_eNB==1 ) ? 0 : 1;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers                       = 1;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands                     = 1;
	//	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index                         = ;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity                   = 1;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa                                     = 4; // 0 dB
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index               = 0;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap                                   = 0;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb                                   = get_subbandsize(cc->mib->message.dl_Bandwidth); // ignored
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode                      = (cc->p_eNB==1 ) ? 1 : 2;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband                 = 1;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector                          = 1;
	//	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector                    = ; 
718 719

	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start                           = cc[CC_idP].sib1_v13ext->bandwidthReducedAccessRelatedInfo_r13->startSymbolBR_r13;
720 721 722 723 724 725 726 727 728
	
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type                               = (RA_template->rach_resource_type < 3) ? 1 : 2;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type                    = 2;  // not SI message
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.initial_transmission_sf_io            = (10*frameP)+subframeP;
	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag                       = 0;
	dl_req->number_pdu++;
	
	RA_template->generate_Msg4=0;
	RA_template->wait_ack_Msg4=1;
729

730 731
	lcid=0;
	
732
	UE_list->UE_sched_ctrl[UE_id].round[CC_idP][RA_template->harq_pid] = 0;
733 734
	msg4_header = 1+6+1;  // CR header, CR CE, SDU header
	
735 736
	if ((RA_template->msg4_TBsize - rrc_sdu_length - msg4_header) <= 2) {
	  msg4_padding = RA_template->msg4_TBsize - rrc_sdu_length - msg4_header;
737 738 739
	  msg4_post_padding = 0;
	} else {
	  msg4_padding = 0;
740
	  msg4_post_padding = RA_template->msg4_TBsize - rrc_sdu_length - msg4_header -1;
741 742
	}
	
knopp's avatar
knopp committed
743
	LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d subframeP %d Msg4 : TBS %d, sdu_len %d, msg4_header %d, msg4_padding %d, msg4_post_padding %d\n",
744
	      module_idP,CC_idP,frameP,subframeP,RA_template->msg4_TBsize,rrc_sdu_length,msg4_header,msg4_padding,msg4_post_padding);
745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761
	DevAssert( UE_id != UE_INDEX_INVALID ); // FIXME not sure how to gracefully return
	// CHECK THIS: &cc[CC_idP].CCCH_pdu.payload[0]
	offset = generate_dlsch_header((unsigned char*)eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0],
				       1,                           //num_sdus
				       (unsigned short*)&rrc_sdu_length,             //
				       &lcid,                       // sdu_lcid
				       255,                         // no drx
				       0,                           // no timing advance
				       RA_template->cont_res_id,  // contention res id
				       msg4_padding,                // no padding
				       msg4_post_padding);
	
	memcpy((void*)&eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0][(unsigned char)offset],
	       &cc[CC_idP].CCCH_pdu.payload[0],
	       rrc_sdu_length);
	
	// DL request
Cedric Roux's avatar
Cedric Roux committed
762
	eNB->TX_req[CC_idP].sfn_sf                                             = (frameP<<4)+subframeP;
763 764 765 766 767 768 769
	TX_req                                                                = &eNB->TX_req[CC_idP].tx_request_body.tx_pdu_list[eNB->TX_req[CC_idP].tx_request_body.number_of_pdus]; 		     	      
	TX_req->pdu_length                                                    = rrc_sdu_length;
	TX_req->pdu_index                                                     = eNB->pdu_index[CC_idP]++;
	TX_req->num_segments                                                  = 1;
	TX_req->segments[0].segment_length                                    = rrc_sdu_length;
	TX_req->segments[0].segment_data                                      = eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0];
	eNB->TX_req[CC_idP].tx_request_body.number_of_pdus++;
770

771 772 773 774
	// Program ACK/NAK for Msg4 PDSCH
	int absSF = (RA_template->Msg3_frame*10)+RA_template->Msg3_subframe;
	// see Section 10.2 from 36.213
	int ackNAK_absSF = absSF + reps + 4;
775 776 777 778
	AssertFatal(reps>2,"Have to handle programming of ACK when PDSCH repetitions is > 2\n");
	ul_req        = &eNB->UL_req_tmp[CC_idP][ackNAK_absSF%10].ul_config_request_body;
	ul_config_pdu = &ul_req->ul_config_pdu_list[ul_req->number_of_pdus]; 

779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800
	ul_config_pdu->pdu_type                                                                     = NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE; 
	ul_config_pdu->pdu_size                                                                     = (uint8_t)(2+sizeof(nfapi_ul_config_uci_harq_pdu));
	ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.handle                       = 0; // don't know how to use this
	ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.rnti                         = RA_template->rnti;
	ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.ue_type                     = (RA_template->rach_resource_type < 3) ? 1 : 2;
	ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.empty_symbols               = 0;
	ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.total_number_of_repetitions = pucchreps[RA_template->rach_resource_type-1];
	ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.repetition_number           = 0;
	// Note need to keep sending this across reptitions!!!! Not really for PUCCH, to ask small-cell forum, we'll see for the other messages, maybe parameters change across repetitions and FAPI has to provide for that
	if (cc[CC_idP].tdd_Config==NULL) { // FDD case
	  ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel8_fdd.n_pucch_1_0   = n1pucchan[RA_template->rach_resource_type-1];
	  // NOTE: How to fill in the rest of the n_pucch_1_0 information 213 Section 10.1.2.1 in the general case
	  // = N_ECCE_q + Delta_ARO + n1pucchan[ce_level]
	  // higher in the MPDCCH configuration, N_ECCE_q is hard-coded to 0, and harq resource offset to 0 =>
	  // Delta_ARO = 0 from Table 10.1.2.1-1
	  ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel8_fdd.harq_size     = 1;  // 1-bit ACK/NAK
	}
	else {
	  AssertFatal(1==0,"PUCCH configuration for ACK/NAK not handled yet for TDD BL/CE case\n");
	}
	ul_req->number_of_pdus++;
	T(T_ENB_MAC_UE_DL_PDU_WITH_DATA, T_INT(module_idP), T_INT(CC_idP), T_INT(RA_template->rnti), T_INT(frameP), T_INT(subframeP),
801
	  T_INT(0 /*harq_pid always 0?*/), T_BUFFER(&eNB->UE_list.DLSCH_pdu[CC_idP][0][UE_id].payload[0], RA_template->msg4_TBsize));
802 803 804 805 806 807 808 809 810 811 812 813
	
	if (opt_enabled==1) {
	  trace_pdu(1, (uint8_t *)eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0],
		    rrc_sdu_length, UE_id, 3, UE_RNTI(module_idP, UE_id),
		    eNB->frame, eNB->subframe,0,0);
	  LOG_D(OPT,"[eNB %d][DLSCH] CC_id %d Frame %d trace pdu for rnti %x with size %d\n",
		module_idP, CC_idP, frameP, UE_RNTI(module_idP,UE_id), rrc_sdu_length);
	}
      } // Msg4 frame/subframe
    } // msg4_mpdcch_repetition_count
  } // rach_resource_type > 0 
  else
814
#endif
815 816
    { // This is normal LTE case
      if ((RA_template->Msg4_frame == frameP) && (RA_template->Msg4_subframe == subframeP)) {	      
817
	LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating Msg4 with RRC Piggyback (RNTI %x)\n",
818 819
	      module_idP, CC_idP, frameP, subframeP,RA_template->rnti);
	
820
	/// Choose first 4 RBs for Msg4, should really check that these are free!
821 822 823 824 825 826 827 828
	first_rb=0;
	
	vrb_map[first_rb] = 1;
	vrb_map[first_rb+1] = 1;
	vrb_map[first_rb+2] = 1;
	vrb_map[first_rb+3] = 1;
	
	
829
	// Compute MCS/TBS for 3 PRB (coded on 4 vrb)
830 831 832
	msg4_header = 1+6+1;  // CR header, CR CE, SDU header
	
	if ((rrc_sdu_length+msg4_header) <= 22) {
833 834
	  RA_template->msg4_mcs                       = 4;
	  RA_template->msg4_TBsize = 22;
835
	} else if ((rrc_sdu_length+msg4_header) <= 28) {
836 837
	  RA_template->msg4_mcs                       = 5;
	  RA_template->msg4_TBsize = 28;
838
	} else if ((rrc_sdu_length+msg4_header) <= 32) {
839 840
	  RA_template->msg4_mcs                       = 6;
	  RA_template->msg4_TBsize = 32;
841
	} else if ((rrc_sdu_length+msg4_header) <= 41) {
842 843
	  RA_template->msg4_mcs                       = 7;
	  RA_template->msg4_TBsize = 41;
844
	} else if ((rrc_sdu_length+msg4_header) <= 49) {
845 846
	  RA_template->msg4_mcs                       = 8;
	  RA_template->msg4_TBsize = 49;
847
	} else if ((rrc_sdu_length+msg4_header) <= 57) {
848 849
	  RA_template->msg4_mcs    = 9;
	  RA_template->msg4_TBsize = 57;
850 851
	}

852 853 854 855
	fill_nfapi_dl_dci_1A(dl_config_pdu,
			     4,                           // aggregation_level
			     RA_template->rnti,           // rnti
			     1,                           // rnti_type, CRNTI
856
			     RA_template->harq_pid,       // harq_process
857 858 859 860 861 862
			     1,                           // tpc, none
			     getRIV(N_RB_DL,first_rb,4),  // resource_block_coding
			     RA_template->msg4_mcs,       // mcs
			     1,                           // ndi
			     0,                           // rv
			     0);                          // vrb_flag
863 864 865 866 867 868 869 870 871 872 873 874
    LOG_I(MAC,"Frame %d, subframe %d: Msg4 DCI pdu_num %d (rnti %x,rnti_type %d,harq_pid %d, resource_block_coding (%p) %d\n",
		  frameP,
	      subframeP,
          dl_req->number_pdu,
          dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti,
          dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type,
          dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process,
          &dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding,
          dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding);
    AssertFatal(dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding < 8192,
				"resource_block_coding %u < 8192\n",
                dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding);	
875
	if (!CCE_allocation_infeasible(module_idP,CC_idP,1,
876 877
				       subframeP,dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level,
				       RA_template->rnti)) {
878 879
	  dl_req->number_dci++;
	  dl_req->number_pdu++;
880
	  
881 882
	  RA_template->generate_Msg4=0;
	  RA_template->wait_ack_Msg4=1;
883 884
	  
	  // increment Absolute subframe by 8 for Msg4 retransmission
885
	  LOG_D(MAC,"Frame %d, Subframe %d: Preparing for Msg4 retransmission currently %d.%d\n",
886 887
		frameP,subframeP,RA_template->Msg4_frame,RA_template->Msg4_subframe);
	  if (RA_template->Msg4_subframe > 1) RA_template->Msg4_frame++;
888
	  RA_template->Msg4_frame&=1023;
889
	  RA_template->Msg4_subframe = (RA_template->Msg4_subframe+8)%10;
890
	  LOG_D(MAC,"Frame %d, Subframe %d: Msg4 retransmission in %d.%d\n",
891
		frameP,subframeP,RA_template->Msg4_frame,RA_template->Msg4_subframe);
892
	  lcid=0;
893
	  
894 895 896 897
	  // put HARQ process round to 0
	  if (cc->tdd_Config) RA_template->harq_pid = ((frameP*10)+subframeP)%10;
	  else RA_template->harq_pid = ((frameP*10)+subframeP)&7;
	  UE_list->UE_sched_ctrl[UE_id].round[CC_idP][RA_template->harq_pid] = 0;
898
	  
899 900
	  if ((RA_template->msg4_TBsize - rrc_sdu_length - msg4_header) <= 2) {
	    msg4_padding = RA_template->msg4_TBsize - rrc_sdu_length - msg4_header;
901 902 903
	    msg4_post_padding = 0;
	  } else {
	    msg4_padding = 0;
904
	    msg4_post_padding = RA_template->msg4_TBsize - rrc_sdu_length - msg4_header -1;
905
	  }
906
	  
knopp's avatar
knopp committed
907
	  LOG_D(MAC,"[eNB %d][RAPROC] CC_idP %d Frame %d subframeP %d Msg4 : TBS %d, sdu_len %d, msg4_header %d, msg4_padding %d, msg4_post_padding %d\n",
908
		module_idP,CC_idP,frameP,subframeP,RA_template->msg4_TBsize,rrc_sdu_length,msg4_header,msg4_padding,msg4_post_padding);
909 910 911 912 913 914 915 916 917 918 919
	  DevAssert( UE_id != UE_INDEX_INVALID ); // FIXME not sure how to gracefully return
	  // CHECK THIS: &cc[CC_idP].CCCH_pdu.payload[0]
	  offset = generate_dlsch_header((unsigned char*)eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0],
					 1,                           //num_sdus
					 (unsigned short*)&rrc_sdu_length,             //
					 &lcid,                       // sdu_lcid
					 255,                         // no drx
					 0,                           // no timing advance
					 RA_template->cont_res_id,  // contention res id
					 msg4_padding,                // no padding
					 msg4_post_padding);
920
	  
921 922 923
	  memcpy((void*)&eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0][(unsigned char)offset],
		 &cc[CC_idP].CCCH_pdu.payload[0],
		 rrc_sdu_length);
924
	  
925 926 927 928
	  // DLSCH Config
	  fill_nfapi_dlsch_config(eNB,
				  dl_req,
				  RA_template->msg4_TBsize,
929
				  eNB->pdu_index[CC_idP],
930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949
				  RA_template->rnti,
				  2,                           // resource_allocation_type : format 1A/1B/1D
				  0,                           // virtual_resource_block_assignment_flag : localized
				  getRIV(N_RB_DL,first_rb,4),  // resource_block_coding : RIV, 4 PRB
				  2,                           // modulation: QPSK
				  0,                           // redundancy version
				  1,                           // transport_blocks
				  0,                           // transport_block_to_codeword_swap_flag (0)
				  (cc->p_eNB==1 ) ? 0 : 1,     // transmission_scheme
				  1,                           // number of layers
				  1,                           // number of subbands
				  //0,                         // codebook index 
				  1,                           // ue_category_capacity
				  4,                           // pa: 0 dB
				  0,                           // delta_power_offset_index
				  0,                           // ngap
				  1,                           // NPRB = 3 like in DCI
				  (cc->p_eNB==1 ) ? 1 : 2,     // transmission mode
				  1,                           // num_bf_prb_per_subband
				  1);                          // num_bf_vector
950
      LOG_I(MAC,"Filled DLSCH config, pdu number %d, non-dci pdu_index %d\n",dl_req->number_pdu,eNB->pdu_index[CC_idP]);
951

952
	  // DL request
953 954 955
	  eNB->TX_req[CC_idP].sfn_sf = fill_nfapi_tx_req(&eNB->TX_req[CC_idP].tx_request_body,
							 (frameP*10)+subframeP,
							 rrc_sdu_length,
956
							 eNB->pdu_index[CC_idP],
957
							 eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0]); 
958
	  eNB->pdu_index[CC_idP]++;
959

960
	  LOG_D(MAC,"Filling UCI ACK/NAK information, cce_idx %d\n",dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx);
961
	  // Program PUCCH1a for ACK/NAK
962 963 964 965 966 967
	  // Program ACK/NAK for Msg4 PDSCH
	  fill_nfapi_uci_acknak(module_idP,
				CC_idP,
				RA_template->rnti,
				(frameP*10)+subframeP,
				dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx);
968

969
	  
970
	  T(T_ENB_MAC_UE_DL_PDU_WITH_DATA, T_INT(module_idP), T_INT(CC_idP), T_INT(RA_template->rnti), T_INT(frameP), T_INT(subframeP),
971
	    T_INT(0 /*harq_pid always 0?*/), T_BUFFER(&eNB->UE_list.DLSCH_pdu[CC_idP][0][UE_id].payload[0], RA_template->msg4_TBsize));
972
	  
973 974 975 976 977 978 979
	  if (opt_enabled==1) {
	    trace_pdu(1, (uint8_t *)eNB->UE_list.DLSCH_pdu[CC_idP][0][(unsigned char)UE_id].payload[0],
		      rrc_sdu_length, UE_id, 3, UE_RNTI(module_idP, UE_id),
		      eNB->frame, eNB->subframe,0,0);
	    LOG_D(OPT,"[eNB %d][DLSCH] CC_id %d Frame %d trace pdu for rnti %x with size %d\n",
		  module_idP, CC_idP, frameP, UE_RNTI(module_idP,UE_id), rrc_sdu_length);
	  }
980
	  
981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996
	} // CCE Allocation feasible
      } // msg4 frame/subframe
    } // else rach_resource_type
}

void check_Msg4_retransmission(module_id_t module_idP,int CC_idP,frame_t frameP,sub_frame_t subframeP,RA_TEMPLATE *RA_template) {
 
  eNB_MAC_INST                    *eNB = RC.mac[module_idP];
  COMMON_channels_t               *cc  = eNB->common_channels;
  int                             UE_id           = -1;
  uint8_t                         *vrb_map;
  int                             first_rb;
  int                             N_RB_DL;
  nfapi_dl_config_request_pdu_t   *dl_config_pdu;
  UE_list_t                       *UE_list=&eNB->UE_list;
  nfapi_dl_config_request_body_t *dl_req;
997

998
  int                             round;
999
  /*
1000
#ifdef Rel14
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
  COMMON_channels_t               *cc  = eNB->common_channels;

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

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

  if (cc[CC_idP].radioResourceConfigCommon_BR) {

    ext4_prach                 = cc[CC_idP].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
    prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;
        
    switch (prach_ParametersListCE_r13->list.count) {
    case 4:
      p[3]=prach_ParametersListCE_r13->list.array[3];
    case 3:
      p[2]=prach_ParametersListCE_r13->list.array[2];
    case 2:
      p[1]=prach_ParametersListCE_r13->list.array[1];
    case 1:
      p[0]=prach_ParametersListCE_r13->list.array[0];
    default:
      AssertFatal(1==0,"Illegal count for prach_ParametersListCE_r13 %d\n",prach_ParametersListCE_r13->list.count);
    }
  }
#endif
  */

  // check HARQ status and retransmit if necessary
1034

1035 1036 1037
  
  UE_id = find_UE_id(module_idP,RA_template->rnti);
  AssertFatal(UE_id>=0,"Can't find UE for t-crnti\n");
1038

1039
  round = UE_list->UE_sched_ctrl[UE_id].round[CC_idP][RA_template->harq_pid];
1040 1041 1042 1043 1044 1045
  vrb_map       = cc[CC_idP].vrb_map;
  
  dl_req        = &eNB->DL_req[CC_idP].dl_config_request_body;
  dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu]; 
  N_RB_DL       = to_prb(cc[CC_idP].mib->message.dl_Bandwidth);
  
1046 1047
  LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Checking if Msg4 for harq_pid %d was acknowledged (round %d)\n",
	module_idP,CC_idP,frameP,subframeP,RA_template->harq_pid,round);
1048 1049

  if (round!=8) {
1050 1051
    
#ifdef Rel14
1052 1053 1054 1055
    if (RA_template->rach_resource_type>0) {
      AssertFatal(1==0,"Msg4 Retransmissions not handled yet for BL/CE UEs\n");
    }
    else
1056
#endif 
1057 1058
      {
	if ( (RA_template->Msg4_frame == frameP) && (RA_template->Msg4_subframe == subframeP)) {	       
1059
	  
1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
	  //RA_template->wait_ack_Msg4++;
	  // we have to schedule a retransmission
	  
	  first_rb=0;
	  vrb_map[first_rb] = 1;
	  vrb_map[first_rb+1] = 1;
	  vrb_map[first_rb+2] = 1;
	  vrb_map[first_rb+3] = 1;
	  
	  fill_nfapi_dl_dci_1A(dl_config_pdu,
			       4,                           // aggregation_level
			       RA_template->rnti,           // rnti
			       1,                           // rnti_type, CRNTI
1073
			       RA_template->harq_pid,       // harq_process
1074 1075 1076 1077
			       1,                           // tpc, none
			       getRIV(N_RB_DL,first_rb,4),  // resource_block_coding
			       RA_template->msg4_mcs,       // mcs
			       1,                           // ndi
1078
			       round&3,                       // rv
1079 1080
			       0);                          // vrb_flag
	  
1081
	  if (!CCE_allocation_infeasible(module_idP,CC_idP,1,subframeP,dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level,RA_template->rnti)) {
1082 1083 1084
	    dl_req->number_dci++;
	    dl_req->number_pdu++;
	    
1085
	    LOG_I(MAC,"msg4 retransmission for rnti %x (round %d) fsf %d/%d\n", RA_template->rnti, round, frameP, subframeP);
1086 1087 1088 1089
	    	  // DLSCH Config
	    fill_nfapi_dlsch_config(eNB,
				    dl_req,
				    RA_template->msg4_TBsize,
1090
				    -1                           /* retransmission, no pdu_index */,
1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
				    RA_template->rnti,
				    2,                           // resource_allocation_type : format 1A/1B/1D
				    0,                           // virtual_resource_block_assignment_flag : localized
				    getRIV(N_RB_DL,first_rb,4),  // resource_block_coding : RIV, 4 PRB
				    2,                           // modulation: QPSK
				    round&3,                     // redundancy version
				    1,                           // transport_blocks
				    0,                           // transport_block_to_codeword_swap_flag (0)
				    (cc->p_eNB==1 ) ? 0 : 1,     // transmission_scheme
				    1,                           // number of layers
				    1,                           // number of subbands
				    //0,                         // codebook index 
				    1,                           // ue_category_capacity
				    4,                           // pa: 0 dB
				    0,                           // delta_power_offset_index
				    0,                           // ngap
				    1,                           // NPRB = 3 like in DCI
				    (cc->p_eNB==1 ) ? 1 : 2,     // transmission mode
				    1,                           // num_bf_prb_per_subband
				    1);                          // num_bf_vector
1111 1112
	  }
	  else
knopp's avatar
knopp committed
1113
	    LOG_D(MAC,"msg4 retransmission for rnti %x (round %d) fsf %d/%d CCE allocation failed!\n", RA_template->rnti, round, frameP, subframeP);
1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124
	  
	  
	  // Program PUCCH1a for ACK/NAK
	  

	  fill_nfapi_uci_acknak(module_idP,CC_idP,
				RA_template->rnti,
				(frameP*10)+subframeP,
				dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx);
	  
	  // prepare frame for retransmission
1125
	  if (RA_template->Msg4_subframe>1) RA_template->Msg4_frame++;
1126
	  RA_template->Msg4_frame&=1023;
1127 1128 1129 1130 1131
	  RA_template->Msg4_subframe=(RA_template->Msg4_subframe+8)%10;

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

1132 1133
	} // Msg4 frame/subframe
      } // regular LTE case
1134
  } else {
1135
    LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d : Msg4 acknowledged\n",module_idP,CC_idP,frameP,subframeP);
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
    RA_template->wait_ack_Msg4=0;
    RA_template->RA_active=FALSE;
    UE_id = find_UE_id(module_idP,RA_template->rnti);
    DevAssert( UE_id != -1 );
    eNB->UE_list.UE_template[UE_PCCID(module_idP,UE_id)][UE_id].configured=TRUE;
  }
} 

void schedule_RA(module_id_t module_idP,frame_t frameP, sub_frame_t subframeP)
{

  int                             CC_id;
  eNB_MAC_INST                    *eNB = RC.mac[module_idP];
  COMMON_channels_t               *cc  = eNB->common_channels;
  RA_TEMPLATE                     *RA_template;
  uint8_t                         i;

  start_meas(&eNB->schedule_ra);

1155

1156
  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
1157
    // skip UL component carriers if TDD
1158 1159 1160 1161 1162 1163 1164 1165 1166
    if (is_UL_sf(&cc[CC_id],subframeP)==1) continue;


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

      RA_template = (RA_TEMPLATE *)&cc[CC_id].RA_template[i];

      if (RA_template->RA_active == TRUE) {

1167
        LOG_I(MAC,"[eNB %d][RAPROC] Frame %d, Subframe %d : CC_id %d RA %d is active (generate RAR %d, generate_Msg4 %d, wait_ack_Msg4 %d, rnti %x)\n",
1168
              module_idP,frameP,subframeP,CC_id,i,RA_template->generate_rar,RA_template->generate_Msg4,RA_template->wait_ack_Msg4, RA_template->rnti);
1169 1170 1171 1172 1173 1174

        if      (RA_template->generate_rar == 1)  generate_Msg2(module_idP,CC_id,frameP,subframeP,RA_template);
	else if (RA_template->generate_Msg4 == 1) generate_Msg4(module_idP,CC_id,frameP,subframeP,RA_template);
 	else if (RA_template->wait_ack_Msg4==1)   check_Msg4_retransmission(module_idP,CC_id,frameP,subframeP,RA_template);


1175
      } // RA_active == TRUE
1176 1177
    } // for i=0 .. N_RA_PROC-1 
  } // CC_id
1178
  
1179 1180
  stop_meas(&eNB->schedule_ra);
}
gauthier's avatar
gauthier committed
1181

1182

1183
// handles the event of MSG1 reception
1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195
void initiate_ra_proc(module_id_t module_idP, 
		      int CC_id,
		      frame_t frameP, 
		      sub_frame_t subframeP,
		      uint16_t preamble_index,
		      int16_t timing_offset,
		      uint16_t ra_rnti
#ifdef Rel14
		      ,
		      uint8_t rach_resource_type
#endif
		      )
1196 1197 1198 1199
{

  uint8_t i;

1200 1201 1202
  COMMON_channels_t   *cc  = &RC.mac[module_idP]->common_channels[CC_id];
  RA_TEMPLATE *RA_template = &cc->RA_template[0];

1203 1204
  struct PRACH_ConfigSIB_v1310 *ext4_prach = NULL;
  PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13 = NULL;
1205

1206 1207 1208 1209
  if (cc->radioResourceConfigCommon_BR && cc->radioResourceConfigCommon_BR->ext4) {
    ext4_prach=cc->radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
    prach_ParametersListCE_r13= &ext4_prach->prach_ParametersListCE_r13;
  }
1210
  LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, Subframe %d  Initiating RA procedure for preamble index %d\n",module_idP,CC_id,frameP,subframeP,preamble_index);
1211
#ifdef Rel14
knopp's avatar
knopp committed
1212
  LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, Subframe %d  PRACH resource type %d\n",module_idP,CC_id,frameP,subframeP,rach_resource_type);
1213
#endif
1214

1215 1216
  if (prach_ParametersListCE_r13 && 
      prach_ParametersListCE_r13->list.count<rach_resource_type) {
1217 1218 1219 1220 1221 1222 1223
    LOG_E(MAC,"[eNB %d][RAPROC] CC_id %d Received impossible PRACH resource type %d, only %d CE levels configured\n",
	  module_idP,CC_id,
	  rach_resource_type,
	  (int)prach_ParametersListCE_r13->list.count);
    return;
  }

1224 1225 1226
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC,1);
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC,0);

1227
  for (i=0; i<NB_RA_PROC_MAX; i++) {
1228 1229
    if (RA_template[i].RA_active==FALSE &&
        RA_template[i].wait_ack_Msg4 == 0) {
1230
      int loop = 0;
1231
      LOG_D(MAC,"Frame %d, Subframe %d: Activating RA process %d\n",frameP,subframeP,i);
1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242
      RA_template[i].RA_active          = TRUE;
      RA_template[i].generate_rar       = 1;
      RA_template[i].generate_Msg4      = 0;
      RA_template[i].wait_ack_Msg4      = 0;
      RA_template[i].timing_offset      = timing_offset;
      RA_template[i].preamble_subframe  = subframeP;
#ifdef Rel14
      RA_template[i].rach_resource_type = rach_resource_type;
      RA_template[i].msg2_mpdcch_repetition_cnt = 0;		      
      RA_template[i].msg4_mpdcch_repetition_cnt = 0;		      
#endif
1243 1244
      RA_template[i].Msg2_frame         = frameP+((subframeP>5)?1:0);
      RA_template[i].Msg2_subframe      = (subframeP+4)%10;
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256
      /* TODO: find better procedure to allocate RNTI */
      do {
        RA_template[i].rnti = taus();
        loop++;
      } while (loop != 100 &&
               /* TODO: this is not correct, the rnti may be in use without
                * being in the MAC yet. To be refined.
                */
               !(find_UE_id(module_idP, RA_template[i].rnti) == -1 &&
                 /* 1024 and 60000 arbirarily chosen, not coming from standard */
                 RA_template[i].rnti >= 1024 && RA_template[i].rnti < 60000));
      if (loop == 100) { printf("%s:%d:%s: FATAL ERROR! contact the authors\n", __FILE__, __LINE__, __FUNCTION__); abort(); }
1257
      RA_template[i].RA_rnti        = ra_rnti;
1258
      RA_template[i].preamble_index = preamble_index;
knopp's avatar
knopp committed
1259
      LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Activating RAR generation in Frame %d, subframe %d for process %d, rnti %x, RA_active %d\n",
1260 1261 1262 1263
            module_idP,CC_id,frameP,
	    RA_template[i].Msg2_frame,
	    RA_template[i].Msg2_subframe,
	    i,RA_template[i].rnti,
1264 1265 1266 1267 1268
            RA_template[i].RA_active);

      return;
    }
  }
Cedric Roux's avatar
Cedric Roux committed
1269 1270

  LOG_E(MAC,"[eNB %d][RAPROC] FAILURE: CC_id %d Frame %d Initiating RA procedure for preamble index %d\n",module_idP,CC_id,frameP,preamble_index);
1271
}
gauthier's avatar
gauthier committed
1272

1273 1274 1275
void cancel_ra_proc(module_id_t module_idP, int CC_id, frame_t frameP, rnti_t rnti)
{
  unsigned char i;
1276
  RA_TEMPLATE *RA_template = (RA_TEMPLATE *)&RC.mac[module_idP]->common_channels[CC_id].RA_template[0];
1277

gauthier's avatar
gauthier committed
1278
  MSC_LOG_EVENT(MSC_PHY_ENB, "RA Cancelling procedure ue %"PRIx16" ", rnti);
1279
  LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Cancelling RA procedure for UE rnti %x\n",module_idP,CC_id,frameP,rnti);
1280 1281 1282 1283 1284 1285 1286 1287 1288 1289

  for (i=0; i<NB_RA_PROC_MAX; i++) {
    if (rnti == RA_template[i].rnti) {
      RA_template[i].RA_active=FALSE;
      RA_template[i].generate_rar=0;
      RA_template[i].generate_Msg4=0;
      RA_template[i].wait_ack_Msg4=0;
      RA_template[i].timing_offset=0;
      RA_template[i].RRC_timer=20;
      RA_template[i].rnti = 0;
1290
      RA_template[i].msg3_round = 0;
knopp's avatar
knopp committed
1291
    }
1292
  }
knopp's avatar
knopp committed
1293 1294
}