eNB_scheduler_ulsch.c 61 KB
Newer Older
1 2 3 4 5
/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
6
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
7 8 9 10 11 12 13 14 15 16 17 18 19 20
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
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
 * @ingroup _mac

 */

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

34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
#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)
57
#include "intertask_interface.h"
58 59
#endif

60 61 62 63 64
#include "ENB_APP/flexran_agent_defs.h"
#include "flexran_agent_ran_api.h"
#include "header.pb-c.h"
#include "flexran.pb-c.h"
#include "flexran_agent_mac.h"
65
#include <dlfcn.h>
66

Cedric Roux's avatar
Cedric Roux committed
67 68
#include "T.h"

69
#define ENABLE_MAC_PAYLOAD_DEBUG
70 71
#define DEBUG_eNB_SCHEDULER 1

72 73 74 75 76 77 78 79
extern int oai_nfapi_hi_dci0_req(nfapi_hi_dci0_request_t *hi_dci0_req);
extern void add_subframe(uint16_t *frameP, uint16_t *subframeP, int offset);
extern uint16_t sfnsf_add_subframe(uint16_t frameP, uint16_t subframeP, int offset);
extern int oai_nfapi_ul_config_req(nfapi_ul_config_request_t *ul_config_req);
extern uint8_t nfapi_mode;

extern uint8_t nfapi_mode;

80
// This table holds the allowable PRB sizes for ULSCH transmissions
81
uint8_t rb_table[34] =
knopp's avatar
knopp committed
82
  { 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32,
83
    36, 40, 45, 48, 50, 54, 60, 64, 72, 75, 80, 81, 90, 96, 100
knopp's avatar
knopp committed
84
  };
85

86 87 88 89 90 91 92 93 94 95 96 97
/* number of active slices for  past and current time*/
int n_active_slices_uplink = 1;
int n_active_slices_current_uplink = 1;

/* RB share for each slice for past and current time*/
float avg_slice_percentage_uplink=0.25;
float slice_percentage_uplink[MAX_NUM_SLICES] = {1.0, 0.0, 0.0, 0.0};
float slice_percentage_current_uplink[MAX_NUM_SLICES] = {1.0, 0.0, 0.0, 0.0};
float total_slice_percentage_uplink = 0;
float total_slice_percentage_current_uplink = 0;

// MAX MCS for each slice for past and current time
98 99
int slice_maxmcs_uplink[MAX_NUM_SLICES] = {20, 20, 20, 20};
int slice_maxmcs_current_uplink[MAX_NUM_SLICES] = {20,20,20,20};
100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116

/*resource blocks allowed*/
uint16_t         nb_rbs_allowed_slice_uplink[MAX_NUM_CCs][MAX_NUM_SLICES];
/*Slice Update */
int update_ul_scheduler[MAX_NUM_SLICES] = {1, 1, 1, 1};
int update_ul_scheduler_current[MAX_NUM_SLICES] = {1, 1, 1, 1};

/* name of available scheduler*/
char *ul_scheduler_type[MAX_NUM_SLICES] = {"schedule_ulsch_rnti",
					   "schedule_ulsch_rnti",
					   "schedule_ulsch_rnti",
					   "schedule_ulsch_rnti"
};

/* Slice Function Pointer */
slice_scheduler_ul slice_sched_ul[MAX_NUM_SLICES] = {0};

117 118 119 120 121 122 123 124 125
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 uint16_t timing_advance, const uint8_t ul_cqi)
Cedric Roux's avatar
Cedric Roux committed
126
{
knopp's avatar
knopp committed
127 128 129 130 131 132 133 134 135 136
  int current_rnti = rntiP;
  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, current_rnti);
  int RA_id;
  int ii, j;
  eNB_MAC_INST *mac = RC.mac[enb_mod_idP];
  int harq_pid =
    subframe2harqpid(&mac->common_channels[CC_idP], frameP, subframeP);
137
  int lcgid_updated[4] = {0, 0, 0, 0};
knopp's avatar
knopp committed
138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189

  UE_list_t *UE_list = &mac->UE_list;
  int crnti_rx = 0;
  RA_t *ra =
    (RA_t *) & RC.mac[enb_mod_idP]->common_channels[CC_idP].ra[0];
  int first_rb = 0;

  start_meas(&mac->rx_ulsch_sdu);

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

  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
    (VCD_SIGNAL_DUMPER_FUNCTIONS_RX_SDU, 1);
  if (opt_enabled == 1) {
    trace_pdu(0, sduP, sdu_lenP, 0, 3, current_rnti, frameP, subframeP,
	      0, 0);
    LOG_D(OPT, "[eNB %d][ULSCH] Frame %d  rnti %x  with size %d\n",
	  enb_mod_idP, frameP, current_rnti, sdu_lenP);
  }

  if (UE_id != -1) {
    LOG_D(MAC,
	  "[eNB %d][PUSCH %d] CC_id %d Received ULSCH sdu round %d from PHY (rnti %x, UE_id %d) ul_cqi %d\n",
	  enb_mod_idP, harq_pid, CC_idP,
	  UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid],
	  current_rnti, UE_id, ul_cqi);

    AssertFatal(UE_list->UE_sched_ctrl[UE_id].
		round_UL[CC_idP][harq_pid] < 8, "round >= 8\n");
    if (sduP != NULL) {
      UE_list->UE_sched_ctrl[UE_id].ul_inactivity_timer = 0;
      UE_list->UE_sched_ctrl[UE_id].ul_failure_timer = 0;
      UE_list->UE_sched_ctrl[UE_id].ul_scheduled &= (~(1 << harq_pid));
      /* Update with smoothing: 3/4 of old value and 1/4 of new.
       * This is the logic that was done in the function
       * lte_est_timing_advance_pusch, maybe it's not necessary?
       * maybe it's even not correct at all?
       */
      UE_list->UE_sched_ctrl[UE_id].ta_update =	(UE_list->UE_sched_ctrl[UE_id].ta_update * 3 + timing_advance) / 4;
      UE_list->UE_sched_ctrl[UE_id].pusch_snr[CC_idP] = ul_cqi;
      UE_list->UE_sched_ctrl[UE_id].ul_consecutive_errors = 0;
      first_rb = UE_list->UE_template[CC_idP][UE_id].first_rb_ul[harq_pid];

      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));
      }
190 191 192 193 194

      /* update scheduled bytes */
      UE_list->UE_template[CC_idP][UE_id].scheduled_ul_bytes -= UE_list->UE_template[CC_idP][UE_id].TBS_UL[harq_pid];
      if (UE_list->UE_template[CC_idP][UE_id].scheduled_ul_bytes < 0)
        UE_list->UE_template[CC_idP][UE_id].scheduled_ul_bytes = 0;
knopp's avatar
knopp committed
195 196 197 198 199 200 201 202 203 204 205 206 207
    } else {		// we've got an error
      LOG_D(MAC,
	    "[eNB %d][PUSCH %d] CC_id %d ULSCH in error in round %d, ul_cqi %d\n",
	    enb_mod_idP, harq_pid, CC_idP,
	    UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid],
	    ul_cqi);

      //      AssertFatal(1==0,"ulsch in error\n");
      if (UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid] == 3) {
	UE_list->UE_sched_ctrl[UE_id].ul_scheduled &= (~(1 << harq_pid));
	UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid] = 0;
	if (UE_list->UE_sched_ctrl[UE_id].ul_consecutive_errors++ == 10)
	  UE_list->UE_sched_ctrl[UE_id].ul_failure_timer = 1;
208 209 210 211 212

        /* update scheduled bytes */
        UE_list->UE_template[CC_idP][UE_id].scheduled_ul_bytes -= UE_list->UE_template[CC_idP][UE_id].TBS_UL[harq_pid];
        if (UE_list->UE_template[CC_idP][UE_id].scheduled_ul_bytes < 0)
          UE_list->UE_template[CC_idP][UE_id].scheduled_ul_bytes = 0;
knopp's avatar
knopp committed
213 214
      } else
	UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid]++;
215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238

      first_rb = UE_list->UE_template[CC_idP][UE_id].first_rb_ul[harq_pid];

      // Program NACK for PHICH
      LOG_D(MAC,
	"Programming PHICH NACK for rnti %x harq_pid %d (first_rb %d)\n",
	current_rnti, harq_pid, first_rb);
      nfapi_hi_dci0_request_t *hi_dci0_req = &mac->HI_DCI0_req[CC_idP];
      nfapi_hi_dci0_request_body_t *hi_dci0_req_body = &hi_dci0_req->hi_dci0_request_body;
      nfapi_hi_dci0_request_pdu_t *hi_dci0_pdu =
        &hi_dci0_req_body->hi_dci0_pdu_list[hi_dci0_req_body->number_of_dci + hi_dci0_req_body->number_of_hi];
      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.tl.tag = NFAPI_HI_DCI0_REQUEST_HI_PDU_REL8_TAG;
      hi_dci0_pdu->hi_pdu.hi_pdu_rel8.resource_block_start = 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_body->number_of_hi++;
      hi_dci0_req_body->sfnsf = sfnsf_add_subframe(frameP,subframeP, 0);
      hi_dci0_req_body->tl.tag = NFAPI_HI_DCI0_REQUEST_BODY_TAG;
      hi_dci0_req->sfn_sf = sfnsf_add_subframe(frameP,subframeP, 4);
      hi_dci0_req->header.message_id = NFAPI_HI_DCI0_REQUEST;

knopp's avatar
knopp committed
239
      return;
240

241
    }
knopp's avatar
knopp committed
242 243 244 245 246 247 248 249
  } else if ((RA_id = find_RA_id(enb_mod_idP, CC_idP, current_rnti)) != -1) {	// Check if this is an RA process for the rnti
    AssertFatal(mac->common_channels[CC_idP].
		radioResourceConfigCommon->rach_ConfigCommon.
		maxHARQ_Msg3Tx > 1,
		"maxHARQ %d should be greater than 1\n",
		(int) mac->common_channels[CC_idP].
		radioResourceConfigCommon->rach_ConfigCommon.
		maxHARQ_Msg3Tx);
250

knopp's avatar
knopp committed
251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277
    LOG_D(MAC,
	  "[eNB %d][PUSCH %d] CC_id %d [RAPROC Msg3] Received ULSCH sdu round %d from PHY (rnti %x, RA_id %d) ul_cqi %d\n",
	  enb_mod_idP, harq_pid, CC_idP, ra[RA_id].msg3_round,
	  current_rnti, RA_id, ul_cqi);

    first_rb = ra->msg3_first_rb;

    if (sduP == NULL) {	// we've got an error on Msg3
      LOG_D(MAC,
	    "[eNB %d] CC_id %d, RA %d ULSCH in error in round %d/%d\n",
	    enb_mod_idP, CC_idP, RA_id,
	    ra[RA_id].msg3_round,
	    (int) mac->common_channels[CC_idP].
	    radioResourceConfigCommon->rach_ConfigCommon.
	    maxHARQ_Msg3Tx);
      if (ra[RA_id].msg3_round == mac->common_channels[CC_idP].radioResourceConfigCommon->rach_ConfigCommon.maxHARQ_Msg3Tx - 1) {
	cancel_ra_proc(enb_mod_idP, CC_idP, frameP, current_rnti);
      }

      else {
	first_rb = UE_list->UE_template[CC_idP][UE_id].first_rb_ul[harq_pid];
	ra[RA_id].msg3_round++;
	// prepare handling of retransmission
	ra[RA_id].Msg3_frame    = (ra[RA_id].Msg3_frame + ((ra[RA_id].Msg3_subframe > 1) ? 1 : 0)) % 1024;
	ra[RA_id].Msg3_subframe = (ra[RA_id].Msg3_subframe + 8) % 10;
	add_msg3(enb_mod_idP, CC_idP, &ra[RA_id], frameP, subframeP);
      }
278 279 280

      /* TODO: program NACK for PHICH? */

knopp's avatar
knopp committed
281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310
      return;
    }
  } else {
    LOG_W(MAC,
	  "Cannot find UE or RA corresponding to ULSCH rnti %x, dropping it\n",
	  current_rnti);
    return;
  }
  payload_ptr = parse_ulsch_header(sduP, &num_ce, &num_sdu, rx_ces, rx_lcids, rx_lengths, sdu_lenP);

  T(T_ENB_MAC_UE_UL_PDU, T_INT(enb_mod_idP), T_INT(CC_idP),
    T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
    T_INT(harq_pid), T_INT(sdu_lenP), T_INT(num_ce), T_INT(num_sdu));
  T(T_ENB_MAC_UE_UL_PDU_WITH_DATA, T_INT(enb_mod_idP), T_INT(CC_idP),
    T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
    T_INT(harq_pid), T_INT(sdu_lenP), T_INT(num_ce), T_INT(num_sdu),
    T_BUFFER(sduP, sdu_lenP));

  mac->eNB_stats[CC_idP].ulsch_bytes_rx = sdu_lenP;
  mac->eNB_stats[CC_idP].total_ulsch_bytes_rx += sdu_lenP;
  mac->eNB_stats[CC_idP].total_ulsch_pdus_rx += 1;

  UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid] = 0;

  // control element
  for (i = 0; i < num_ce; i++) {

    T(T_ENB_MAC_UE_UL_CE, T_INT(enb_mod_idP), T_INT(CC_idP),
      T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
      T_INT(rx_ces[i]));
311

knopp's avatar
knopp committed
312 313 314 315 316
    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;
317
	LOG_D(MAC,
knopp's avatar
knopp committed
318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360
	      "[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);
	UE_list->UE_template[CC_idP][UE_id].phr_info_configured =
	  1;
	UE_list->UE_sched_ctrl[UE_id].phr_received = 1;
      }
      payload_ptr += sizeof(POWER_HEADROOM_CMD);
      break;

    case CRNTI:
      {
	int old_rnti =
	  (((uint16_t) payload_ptr[0]) << 8) + payload_ptr[1];
	int old_UE_id = find_UE_id(enb_mod_idP, old_rnti);
	LOG_D(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",
	      enb_mod_idP, frameP, subframeP, CC_idP, rx_ces[i], i,
	      num_ce, old_rnti, old_UE_id);
	/* receiving CRNTI means that the current rnti has to go away */
	cancel_ra_proc(enb_mod_idP, CC_idP, frameP,
		       current_rnti);
	if (old_UE_id != -1) {
	  /* TODO: if the UE did random access (followed by a MAC uplink with
	   * CRNTI) because none of its scheduling request was granted, then
	   * according to 36.321 5.4.4 the UE's MAC will notify RRC to release
	   * PUCCH/SRS. According to 36.331 5.3.13 the UE will then apply
	   * default configuration for CQI reporting and scheduling requests,
	   * which basically means that the CQI requests won't work anymore and
	   * that the UE won't do any scheduling request anymore as long as the
	   * eNB doesn't reconfigure the UE.
	   * We have to take care of this. As the code is, nothing is done and
	   * the UE state in the eNB is wrong.
	   */
	  UE_id = old_UE_id;
	  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, old_rnti);
	  }
	  current_rnti = old_rnti;
361
	}
knopp's avatar
knopp committed
362 363 364 365 366 367 368 369 370 371
	crnti_rx = 1;
	payload_ptr += 2;
	break;
      }

    case TRUNCATED_BSR:
    case SHORT_BSR:
      {
	uint8_t lcgid;
	lcgid = (payload_ptr[0] >> 6);
372 373

	LOG_D(MAC,
knopp's avatar
knopp committed
374 375 376 377 378 379 380 381 382 383
	      "[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);

	if (crnti_rx == 1)
	  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);
	if (UE_id != -1) {
384
          int bsr = payload_ptr[0] & 0x3f;
385

386
          lcgid_updated[lcgid] = 1;
387

388 389
          // update buffer info
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[lcgid] = BSR_TABLE[bsr];
390

391 392 393 394 395 396
          UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer =
              UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[0] +
              UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[1] +
              UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[2] +
              UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[3];
          //UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer += UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer / 4;
397

knopp's avatar
knopp committed
398 399 400 401 402 403 404 405 406
	  RC.eNB[enb_mod_idP][CC_idP]->pusch_stats_bsr[UE_id][(frameP * 10) + subframeP] = (payload_ptr[0] & 0x3f);
	  if (UE_id == UE_list->head)
	    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_BSR,
						    RC.eNB[enb_mod_idP][CC_idP]->pusch_stats_bsr
						    [UE_id][(frameP * 10) + subframeP]);
	  if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[lcgid] == 0) {
	    UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[lcgid] = frameP;
	  }
	  if (mac_eNB_get_rrc_status(enb_mod_idP,UE_RNTI(enb_mod_idP, UE_id)) < RRC_CONNECTED)
407
	    LOG_D(MAC,
408
		  "[eNB %d] CC_id %d MAC CE_LCID %d : estimated_ul_buffer = %d (lcg increment %d)\n",
knopp's avatar
knopp committed
409
		  enb_mod_idP, CC_idP, rx_ces[i],
410 411
		  UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer,
		  UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[lcgid]);
knopp's avatar
knopp committed
412
	} else {
413 414

	}
knopp's avatar
knopp committed
415 416 417 418 419 420
	payload_ptr += 1;	//sizeof(SHORT_BSR); // fixme
      }
      break;

    case LONG_BSR:
      if (UE_id != -1) {
421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462
        int bsr0 = (payload_ptr[0] & 0xFC) >> 2;
        int bsr1 = ((payload_ptr[0] & 0x03) << 4) | ((payload_ptr[1] & 0xF0) >> 4);
        int bsr2 = ((payload_ptr[1] & 0x0F) << 2) | ((payload_ptr[2] & 0xC0) >> 6);
        int bsr3 = payload_ptr[2] & 0x3F;

        lcgid_updated[0] = 1;
        lcgid_updated[1] = 1;
        lcgid_updated[2] = 1;
        lcgid_updated[3] = 1;

        // update buffer info
        UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID0] = BSR_TABLE[bsr0];
        UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID1] = BSR_TABLE[bsr1];
        UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID2] = BSR_TABLE[bsr2];
        UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID3] = BSR_TABLE[bsr3];

        UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer =
            UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[0] +
            UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[1] +
            UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[2] +
            UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[3];
        //UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer += UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer / 4;

        LOG_D(MAC,
              "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR. Size is LCGID0 = %u LCGID1 = "
              "%u LCGID2 = %u LCGID3 = %u\n", enb_mod_idP, CC_idP,
              rx_ces[i],
              UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID0],
              UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID1],
              UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID2],
              UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID3]);
        if (crnti_rx == 1)
          LOG_D(MAC,
                "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR. Size is LCGID0 = %u LCGID1 = "
                "%u LCGID2 = %u LCGID3 = %u\n", enb_mod_idP,
                CC_idP, rx_ces[i],
                UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID0],
                UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID1],
                UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID2],
                UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID3]);

	if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID0] == 0) {
knopp's avatar
knopp committed
463 464 465 466
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID0] = 0;
	} else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID0] == 0) {
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID0] = frameP;
	}
467

468
	if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID1] == 0) {
knopp's avatar
knopp committed
469 470 471
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID1] = 0;
	} else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID1] == 0) {
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID1] = frameP;
472 473
	}

474
	if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID2] == 0) {
knopp's avatar
knopp committed
475 476 477 478
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID2] = 0;
	} else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID2] == 0) {
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID2] = frameP;
	}
479

480
	if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[LCGID3] == 0) {
knopp's avatar
knopp committed
481 482 483
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID3] = 0;
	} else if (UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID3] == 0) {
	  UE_list->UE_template[CC_idP][UE_id].ul_buffer_creation_time[LCGID3] = frameP;
484 485

	}
knopp's avatar
knopp committed
486 487 488 489 490 491 492 493 494 495
      }

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

    default:
      LOG_E(MAC,
	    "[eNB %d] CC_id %d Received unknown MAC header (0x%02x)\n",
	    enb_mod_idP, CC_idP, rx_ces[i]);
      break;
496
    }
knopp's avatar
knopp committed
497
  }
498

knopp's avatar
knopp committed
499 500 501 502 503
  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]);

    T(T_ENB_MAC_UE_UL_SDU, T_INT(enb_mod_idP), T_INT(CC_idP),
504
      T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
knopp's avatar
knopp committed
505 506
      T_INT(rx_lcids[i]), T_INT(rx_lengths[i]));
    T(T_ENB_MAC_UE_UL_SDU_WITH_DATA, T_INT(enb_mod_idP), T_INT(CC_idP),
507
      T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
knopp's avatar
knopp committed
508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529
      T_INT(rx_lcids[i]), T_INT(rx_lengths[i]), T_BUFFER(payload_ptr,
							 rx_lengths
							 [i]));

    switch (rx_lcids[i]) {
    case CCCH:
      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, sdu_len %d), dropping packet\n",
	      enb_mod_idP, CC_idP, frameP, rx_lengths[i],
	      CCCH_PAYLOAD_SIZE_MAX, sdu_lenP);
	break;
      }
      LOG_D(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, payload_ptr[0],
	    payload_ptr[1], payload_ptr[2], payload_ptr[3],
	    payload_ptr[4], payload_ptr[5], current_rnti);
      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);
      for (ii = 0; ii < NB_RA_PROC_MAX; ii++) {
	RA_t *ra = &mac->common_channels[CC_idP].ra[ii];
530

knopp's avatar
knopp committed
531 532 533 534
	LOG_D(MAC,
	      "[mac %d][RAPROC] CC_id %d Checking proc %d : rnti (%x, %x), state %d\n",
	      enb_mod_idP, CC_idP, ii, ra->rnti,
	      current_rnti, ra->state);
535

knopp's avatar
knopp committed
536
	if ((ra->rnti == current_rnti) && (ra->state != IDLE)) {
537

knopp's avatar
knopp committed
538
	  //payload_ptr = parse_ulsch_header(msg3,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,msg3_len);
539

knopp's avatar
knopp committed
540 541
	  if (UE_id < 0) {
	    memcpy(&ra->cont_res_id[0], payload_ptr, 6);
542
	    LOG_D(MAC,
knopp's avatar
knopp committed
543 544 545 546 547 548 549
		  "[eNB %d][RAPROC] CC_id %d Frame %d CCCH: Received Msg3: length %d, offset %ld\n",
		  enb_mod_idP, CC_idP, frameP, rx_lengths[i],
		  payload_ptr - sduP);

	    if ((UE_id = add_new_ue(enb_mod_idP, CC_idP,
				    mac->common_channels[CC_idP].
				    ra[ii].rnti, harq_pid
550
#ifdef Rel14
knopp's avatar
knopp committed
551 552 553
				    ,
				    mac->common_channels[CC_idP].
				    ra[ii].rach_resource_type
554
#endif
knopp's avatar
knopp committed
555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601
				    )) == -1) {
	      AssertFatal(1 == 0,
			  "[MAC][eNB] Max user count reached\n");
	      // kill RA procedure
	    } else
	      LOG_D(MAC,
		    "[eNB %d][RAPROC] CC_id %d Frame %d Added user with rnti %x => UE %d\n",
		    enb_mod_idP, CC_idP, frameP, ra->rnti,
		    UE_id);
	  } else {
	    LOG_D(MAC,
		  "[eNB %d][RAPROC] CC_id %d Frame %d CCCH: Received Msg3 from already registered UE %d: length %d, offset %ld\n",
		  enb_mod_idP, CC_idP, frameP, UE_id,
		  rx_lengths[i], payload_ptr - sduP);
	    // kill RA procedure
	  }

	  mac_rrc_data_ind(enb_mod_idP,
			   CC_idP,
			   frameP, subframeP,
			   current_rnti,
			   CCCH,
			   (uint8_t *) payload_ptr,
			   rx_lengths[i],
			   0);


	  if (num_ce > 0) {	// handle msg3 which is not RRCConnectionRequest
	    //  process_ra_message(msg3,num_ce,rx_lcids,rx_ces);
	  }
	  // prepare transmission of Msg4
	  ra->state = MSG4;



	  // Program Msg4 PDCCH+DLSCH/MPDCCH transmission 4 subframes from now, // Check if this is ok for BL/CE, or if the rule is different
	  ra->Msg4_frame = frameP + ((subframeP > 5) ? 1 : 0);
	  ra->Msg4_subframe = (subframeP + 4) % 10;

	}		// if process is active
      }			// loop on RA processes

      break;

    case DCCH:
    case DCCH1:
      //      if(eNB_mac_inst[module_idP][CC_idP].Dcch_lchan[UE_id].Active==1){
Cedric Roux's avatar
Cedric Roux committed
602

gauthier's avatar
gauthier committed
603

knopp's avatar
knopp committed
604
#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
knopp's avatar
knopp committed
605 606 607 608 609 610
      LOG_T(MAC, "offset: %d\n",
	    (unsigned char) ((unsigned char *) payload_ptr - sduP));
      for (j = 0; j < 32; j++) {
	LOG_T(MAC, "%x ", payload_ptr[j]);
      }
      LOG_T(MAC, "\n");
knopp's avatar
knopp committed
611
#endif
gauthier's avatar
gauthier committed
612

knopp's avatar
knopp committed
613
      if (UE_id != -1) {
614 615 616 617 618 619 620 621 622 623 624 625 626 627
        if (lcgid_updated[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] == 0) {
	  // 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])
	    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;

          UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer =
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[0] +
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[1] +
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[2] +
          UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[3];
          //UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer += UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer / 4;
        }
628

knopp's avatar
knopp committed
629 630 631 632
	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]);
633

knopp's avatar
knopp committed
634 635 636
	mac_rlc_data_ind(enb_mod_idP, current_rnti, 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];
637 638


knopp's avatar
knopp committed
639
      }
640

knopp's avatar
knopp committed
641 642 643
      /* UE_id != -1 */
      // }
      break;
644

knopp's avatar
knopp committed
645 646 647
      // all the DRBS
    case DTCH:
    default:
gauthier's avatar
gauthier committed
648

knopp's avatar
knopp committed
649
#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
knopp's avatar
knopp committed
650 651 652 653 654 655
      LOG_T(MAC, "offset: %d\n",
	    (unsigned char) ((unsigned char *) payload_ptr - sduP));
      for (j = 0; j < 32; j++) {
	LOG_T(MAC, "%x ", payload_ptr[j]);
      }
      LOG_T(MAC, "\n");
656
#endif
knopp's avatar
knopp committed
657 658 659 660 661
      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]);
662

knopp's avatar
knopp committed
663 664 665 666 667 668 669 670 671 672 673 674
	if (UE_id != -1) {
	  // adjust buffer occupancy of the correponding logical channel group
	  LOG_D(MAC,
		"[eNB %d] CC_id %d Frame %d : ULSCH -> UL-DTCH, received %d bytes from UE %d for lcid %d, removing from LCGID %ld, %d\n",
		enb_mod_idP, CC_idP, frameP, rx_lengths[i],
		UE_id, rx_lcids[i],
		UE_list->UE_template[CC_idP][UE_id].
		lcgidmap[rx_lcids[i]],
		UE_list->UE_template[CC_idP][UE_id].
		ul_buffer_info[UE_list->UE_template[CC_idP]
			       [UE_id].lcgidmap[rx_lcids[i]]]);

675 676 677 678 679 680 681 682 683 684 685 686 687 688
          if (lcgid_updated[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] == 0) {
	    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;

            UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer =
               UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[0] +
               UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[1] +
               UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[2] +
               UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[3];
            //UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer += UE_list->UE_template[CC_idP][UE_id].estimated_ul_buffer / 4;
          }

knopp's avatar
knopp committed
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706
	  if ((rx_lengths[i] < SCH_PAYLOAD_SIZE_MAX) && (rx_lengths[i] > 0)) {	// MAX SIZE OF transport block
	    mac_rlc_data_ind(enb_mod_idP, current_rnti, 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];
	    //clear uplane_inactivity_timer
	    UE_list->UE_sched_ctrl[UE_id].uplane_inactivity_timer = 0;
	  } 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);
707
	}
knopp's avatar
knopp committed
708
      }
709

knopp's avatar
knopp committed
710
      break;
knopp's avatar
knopp committed
711
    }
Cedric Roux's avatar
Cedric Roux committed
712

knopp's avatar
knopp committed
713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752
    payload_ptr += rx_lengths[i];
  }

  // Program ACK for PHICH
  LOG_D(MAC,
	"Programming PHICH ACK for rnti %x harq_pid %d (first_rb %d)\n",
	current_rnti, harq_pid, first_rb);
  nfapi_hi_dci0_request_t *hi_dci0_req = &mac->HI_DCI0_req[CC_idP];
  nfapi_hi_dci0_request_body_t *hi_dci0_req_body = &hi_dci0_req->hi_dci0_request_body;
  nfapi_hi_dci0_request_pdu_t *hi_dci0_pdu =
    &hi_dci0_req_body->hi_dci0_pdu_list[hi_dci0_req_body->number_of_dci + hi_dci0_req_body->number_of_hi];
  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.tl.tag = NFAPI_HI_DCI0_REQUEST_HI_PDU_REL8_TAG;
  hi_dci0_pdu->hi_pdu.hi_pdu_rel8.resource_block_start = 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 = 1;
  hi_dci0_req_body->number_of_hi++;
  hi_dci0_req_body->sfnsf = sfnsf_add_subframe(frameP,subframeP, 0);
  hi_dci0_req_body->tl.tag = NFAPI_HI_DCI0_REQUEST_BODY_TAG;
  hi_dci0_req->sfn_sf = sfnsf_add_subframe(frameP,subframeP, 4);
  hi_dci0_req->header.message_id = NFAPI_HI_DCI0_REQUEST;

  /* 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)) {
    if (UE_id != -1)
      UE_list->eNB_UE_stats[CC_idP][UE_id].total_num_errors_rx += 1;
    /*
      if (msg3_flagP != NULL) {
      if( *msg3_flagP == 1 ) {
      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);
      *msg3_flagP=0;
      }
      } */
  } else {
    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;
753
    }
knopp's avatar
knopp committed
754
  }
755

knopp's avatar
knopp committed
756 757
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RX_SDU, 0);
  stop_meas(&mac->rx_ulsch_sdu);
knopp's avatar
knopp committed
758 759
}

760 761
uint32_t bytes_to_bsr_index(int32_t nbytes)
{
knopp's avatar
knopp committed
762
  uint32_t i = 0;
763

knopp's avatar
knopp committed
764 765 766
  if (nbytes < 0) {
    return (0);
  }
767

knopp's avatar
knopp committed
768 769 770
  while ((i < BSR_TABLE_SIZE) && (BSR_TABLE[i] <= nbytes)) {
    i++;
  }
771

knopp's avatar
knopp committed
772
  return (i - 1);
773 774
}

775 776 777
void
add_ue_ulsch_info(module_id_t module_idP, int CC_id, int UE_id,
		  sub_frame_t subframeP, UE_ULSCH_STATUS status)
778
{
knopp's avatar
knopp committed
779 780 781
  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;
782

knopp's avatar
knopp committed
783
  eNB_ulsch_info[module_idP][CC_id][UE_id].serving_num++;
784 785 786
}

unsigned char *parse_ulsch_header(unsigned char *mac_header,
787 788 789 790 791 792
				  unsigned char *num_ce,
				  unsigned char *num_sdu,
				  unsigned char *rx_ces,
				  unsigned char *rx_lcids,
				  unsigned short *rx_lengths,
				  unsigned short tb_length)
793
{
knopp's avatar
knopp committed
794 795 796 797
  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;
798

knopp's avatar
knopp committed
799
  while (not_done == 1) {
800

knopp's avatar
knopp committed
801 802 803
    if (((SCH_SUBHEADER_FIXED *) mac_header_ptr)->E == 0) {
      not_done = 0;
    }
804

knopp's avatar
knopp committed
805
    lcid = ((SCH_SUBHEADER_FIXED *) mac_header_ptr)->LCID;
806

knopp's avatar
knopp committed
807 808 809 810
    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;
811

knopp's avatar
knopp committed
812 813 814
	for (num_sdu_cnt = 0; num_sdu_cnt < num_sdus;
	     num_sdu_cnt++) {
	  length -= rx_lengths[num_sdu_cnt];
815
	}
knopp's avatar
knopp committed
816 817 818 819 820 821 822 823 824 825
      } 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);
826
	}
knopp's avatar
knopp committed
827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856
      }

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

	if (lcid == LONG_BSR) {
	  ce_len += 3;
	} else if (lcid == CRNTI) {
	  ce_len += 2;
	} else if ((lcid == POWER_HEADROOM)
		   || (lcid == TRUNCATED_BSR)
		   || (lcid == SHORT_BSR)) {
	  ce_len++;
	} else {
	  LOG_E(MAC, "unknown CE %d \n", lcid);
	  AssertFatal(1 == 0, "unknown CE");
	}
      }
knopp's avatar
knopp committed
857
    }
knopp's avatar
knopp committed
858
  }
859

knopp's avatar
knopp committed
860 861
  *num_ce = num_ces;
  *num_sdu = num_sdus;
862

knopp's avatar
knopp committed
863
  return (mac_header_ptr);
864 865
}

866 867 868 869 870
/* 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).
 */
871
void
872
set_msg3_subframe(module_id_t mod_id,
873 874 875 876
		  int CC_id,
		  int frame,
		  int subframe, int rnti, int Msg3_frame,
		  int Msg3_subframe)
877
{
878
  eNB_MAC_INST *mac = RC.mac[mod_id];
knopp's avatar
knopp committed
879 880 881 882 883 884 885
  int i;
  for (i = 0; i < NB_RA_PROC_MAX; i++) {
    if (mac->common_channels[CC_id].ra[i].state != IDLE &&
	mac->common_channels[CC_id].ra[i].rnti == rnti) {
      mac->common_channels[CC_id].ra[i].Msg3_subframe =
	Msg3_subframe;
      break;
886
    }
knopp's avatar
knopp committed
887
  }
888
}
889

890 891 892
void
schedule_ulsch(module_id_t module_idP, frame_t frameP,
	       sub_frame_t subframeP)
Cedric Roux's avatar
Cedric Roux committed
893
{
knopp's avatar
knopp committed
894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969
  uint16_t first_rb[MAX_NUM_CCs], i;
  int CC_id;
  eNB_MAC_INST *mac = RC.mac[module_idP];
  COMMON_channels_t *cc;

  start_meas(&mac->schedule_ulsch);

  int sched_subframe = (subframeP + 4) % 10;

  cc = &mac->common_channels[0];
  int tdd_sfa;
  // for TDD: check subframes where we have to act and return if nothing should be done now
  if (cc->tdd_Config) {
    tdd_sfa = cc->tdd_Config->subframeAssignment;
    switch (subframeP) {
    case 0:
      if ((tdd_sfa == 0) || (tdd_sfa == 3) || (tdd_sfa == 6))
	sched_subframe = 4;
      else
	return;
      break;
    case 1:
      if ((tdd_sfa == 0) || (tdd_sfa == 1))
	sched_subframe = 7;
      else if (tdd_sfa == 6)
	sched_subframe = 8;
      break;
    default:
      return;

    case 2:		// Don't schedule UL in subframe 2 for TDD
      return;
    case 3:
      if (tdd_sfa == 2)
	sched_subframe = 7;
      else
	return;
      break;
    case 4:
      if (tdd_sfa == 1)
	sched_subframe = 8;
      else
	return;
      break;
    case 5:
      if (tdd_sfa == 0)
	sched_subframe = 9;
      else if (tdd_sfa == 6)
	sched_subframe = 3;
      else
	return;
      break;
    case 6:
      if (tdd_sfa == 1)
	sched_subframe = 2;
      else if (tdd_sfa == 6)
	sched_subframe = 3;
      else
	return;
      break;
    case 7:
      return;
    case 8:
      if ((tdd_sfa >= 2) || (tdd_sfa <= 5))
	sched_subframe = 2;
      else
	return;
      break;
    case 9:
      if ((tdd_sfa == 1) || (tdd_sfa == 3) || (tdd_sfa == 4))
	sched_subframe = 3;
      else if (tdd_sfa == 6)
	sched_subframe = 4;
      else
	return;
      break;
970
    }
knopp's avatar
knopp committed
971 972
  }
  for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
gauthier's avatar
gauthier committed
973

974 975


knopp's avatar
knopp committed
976 977
    //leave out first RB for PUCCH
    first_rb[CC_id] = 1;
gauthier's avatar
gauthier committed
978

knopp's avatar
knopp committed
979 980 981 982
    // 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
983

knopp's avatar
knopp committed
984 985
    // default function for default scheduling
    //
gauthier's avatar
gauthier committed
986

knopp's avatar
knopp committed
987 988 989 990
    // 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
991

knopp's avatar
knopp committed
992 993 994 995 996 997 998
    for (i = 0; i < NB_RA_PROC_MAX; i++) {
      if ((cc->ra[i].state == WAITMSG3) &&
	  (cc->ra[i].Msg3_subframe == sched_subframe)) {
	first_rb[CC_id]++;
	//    cc->ray[i].Msg3_subframe = -1;
	break;
      }
knopp's avatar
knopp committed
999
    }
knopp's avatar
knopp committed
1000
  }
1001

1002
  // perform slice-specifc operations
1003

1004 1005
  total_slice_percentage_uplink=0;
  avg_slice_percentage_uplink=1.0/n_active_slices_uplink;
1006 1007

  // reset the slice percentage for inactive slices
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
  for (i = n_active_slices_uplink; i< MAX_NUM_SLICES; i++) {
    slice_percentage_uplink[i]=0;
  }
  for (i = 0; i < n_active_slices_uplink; i++) {
    if (slice_percentage_uplink[i] < 0 ){
      LOG_W(MAC, "[eNB %d] frame %d subframe %d:invalid slice %d percentage %f. resetting to zero",
            module_idP, frameP, subframeP, i, slice_percentage_uplink[i]);
      slice_percentage_uplink[i]=0;
    }
    total_slice_percentage_uplink+=slice_percentage_uplink[i];
  }

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

    // Load any updated functions
    if (update_ul_scheduler[i] > 0 ) {
      slice_sched_ul[i] = dlsym(NULL, ul_scheduler_type[i]);
      update_ul_scheduler[i] = 0;
      update_ul_scheduler_current[i] = 0;
      //slice_percentage_current_uplink[i]= slice_percentage_uplink[i];
      //total_slice_percentage_current_uplink+=slice_percentage_uplink[i];
      //if (total_slice_percentage_current_uplink> 1)
      //total_slice_percentage_current_uplink=1;
      LOG_N(MAC,"update ul scheduler slice %d\n", i);
    }
    // the new total RB share is within the range
    if (total_slice_percentage_uplink <= 1.0){

      // check if the number of slices has changed, and log
      if (n_active_slices_current_uplink != n_active_slices_uplink ){
        if ((n_active_slices_uplink > 0) && (n_active_slices_uplink <= MAX_NUM_SLICES)) {
          LOG_N(MAC,"[eNB %d]frame %d subframe %d: number of active UL slices has changed: %d-->%d\n",
                module_idP, frameP, subframeP, n_active_slices_current_uplink, n_active_slices_uplink);
          n_active_slices_current_uplink = n_active_slices_uplink;
        } else {
          LOG_W(MAC,"invalid number of UL slices %d, revert to the previous value %d\n",
                n_active_slices_uplink, n_active_slices_current_uplink);
          n_active_slices_uplink = n_active_slices_current_uplink;
        }
      }

      // check if the slice rb share has changed, and log the console
      if (slice_percentage_current_uplink[i] != slice_percentage_uplink[i]){
        LOG_N(MAC,"[eNB %d][SLICE %d][UL] frame %d subframe %d: total percentage %f-->%f, slice RB percentage has changed: %f-->%f\n",
              module_idP, i, frameP, subframeP, total_slice_percentage_current_uplink,
              total_slice_percentage_uplink, slice_percentage_current_uplink[i], slice_percentage_uplink[i]);
        total_slice_percentage_current_uplink = total_slice_percentage_uplink;
        slice_percentage_current_uplink[i] = slice_percentage_uplink[i];
      }

      // check if the slice max MCS, and log the console
      if (slice_maxmcs_current_uplink[i] != slice_maxmcs_uplink[i]){
        if ((slice_maxmcs_uplink[i] >= 0) && (slice_maxmcs_uplink[i] <= 16)){
          LOG_N(MAC,"[eNB %d][SLICE %d][UL] frame %d subframe %d: slice MAX MCS has changed: %d-->%d\n",
                module_idP, i, frameP, subframeP, slice_maxmcs_current_uplink[i], slice_maxmcs_uplink[i]);
          slice_maxmcs_current_uplink[i] = slice_maxmcs_uplink[i];
        } else {
          LOG_W(MAC,"[eNB %d][SLICE %d][UL] invalid slice max mcs %d, revert the previous value %d\n",
                module_idP, i, slice_maxmcs_uplink[i],slice_maxmcs_current_uplink[i]);
          slice_maxmcs_uplink[i] = slice_maxmcs_current_uplink[i];
        }
      }

      // check if a new scheduler, and log the console
      if (update_ul_scheduler_current[i] != update_ul_scheduler[i]){
        LOG_N(MAC,"[eNB %d][SLICE %d][UL] frame %d subframe %d: UL scheduler for this slice is updated: %s \n",
              module_idP, i, frameP, subframeP, ul_scheduler_type[i]);
        update_ul_scheduler_current[i] = update_ul_scheduler[i];
      }
    } else {
      if (n_active_slices_uplink == n_active_slices_current_uplink) {
        LOG_W(MAC,"[eNB %d][SLICE %d][UL] invalid total RB share (%f->%f), reduce proportionally the RB share by 0.1\n",
              module_idP, i, total_slice_percentage_current_uplink, total_slice_percentage_uplink);
        if (slice_percentage_uplink[i] > avg_slice_percentage_uplink) {
          slice_percentage_uplink[i] -= 0.1;
          total_slice_percentage_uplink -= 0.1;
        }
      } else {
        // here we can correct the values, e.g. reduce proportionally
        LOG_W(MAC,"[eNB %d][SLICE %d][UL] invalid total RB share (%f->%f), revert the  number of slice to its previous value (%d->%d)\n",
              module_idP, i, total_slice_percentage_current_uplink,
              total_slice_percentage_uplink, n_active_slices_uplink,
              n_active_slices_current_uplink);
        n_active_slices_uplink = n_active_slices_current_uplink;
        slice_percentage_uplink[i] = slice_percentage_current_uplink[i];
      }
    }
1095

1096 1097 1098
    // Run each enabled slice-specific schedulers one by one
    slice_sched_ul[i](module_idP, i, frameP, subframeP, sched_subframe, first_rb);
  }
gauthier's avatar
gauthier committed
1099

knopp's avatar
knopp committed
1100
  stop_meas(&mac->schedule_ulsch);
1101 1102
}

1103 1104
void
schedule_ulsch_rnti(module_id_t module_idP,
1105
					slice_id_t slice_id,
1106 1107 1108
		    frame_t frameP,
		    sub_frame_t subframeP,
		    unsigned char sched_subframeP, uint16_t * first_rb)
1109
{
knopp's avatar
knopp committed
1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133
  int UE_id;
  uint8_t aggregation = 2;
  rnti_t rnti = -1;
  uint8_t round = 0;
  uint8_t harq_pid = 0;
  uint8_t status = 0;
  uint8_t rb_table_index = -1;
  uint32_t cqi_req, cshift, ndi, tpc;
  int32_t normalized_rx_power;
  int32_t target_rx_power = -90;
  static int32_t tpc_accumulated = 0;
  int n;
  int CC_id = 0;
  int drop_ue = 0;
  int N_RB_UL;
  eNB_MAC_INST *mac = RC.mac[module_idP];
  COMMON_channels_t *cc = mac->common_channels;
  UE_list_t *UE_list = &mac->UE_list;
  UE_TEMPLATE *UE_template;
  UE_sched_ctrl *UE_sched_ctrl;
  int sched_frame = frameP;
  int rvidx_tab[4] = { 0, 2, 3, 1 };

  if (sched_subframeP < subframeP)
1134
      sched_frame++;
knopp's avatar
knopp committed
1135 1136 1137 1138 1139 1140 1141 1142 1143

  nfapi_hi_dci0_request_t        *hi_dci0_req = &mac->HI_DCI0_req[CC_id];
  nfapi_hi_dci0_request_body_t   *hi_dci0_req_body = &hi_dci0_req->hi_dci0_request_body;
  nfapi_hi_dci0_request_pdu_t    *hi_dci0_pdu;

  nfapi_ul_config_request_t *ul_req_tmp            = &mac->UL_req_tmp[CC_id][sched_subframeP];
  nfapi_ul_config_request_body_t *ul_req_tmp_body  = &ul_req_tmp->ul_config_request_body;

  //LOG_D(MAC, "entering ulsch preprocesor\n");
1144
  ulsch_scheduler_pre_processor(module_idP, slice_id, frameP, subframeP, first_rb);
knopp's avatar
knopp committed
1145 1146 1147 1148 1149 1150 1151 1152 1153

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

  hi_dci0_req->sfn_sf = (frameP << 4) + subframeP;

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

1154
    if (!ue_slice_membership(UE_id, slice_id))
1155 1156
        continue;

knopp's avatar
knopp committed
1157 1158
    // don't schedule if Msg4 is not received yet
    if (UE_list->UE_template[UE_PCCID(module_idP, UE_id)][UE_id].
1159 1160 1161 1162 1163
        configured == FALSE) {
        LOG_D(MAC,
              "[eNB %d] frame %d subfarme %d, UE %d: not configured, skipping UE scheduling \n",
              module_idP, frameP, subframeP, UE_id);
        continue;
knopp's avatar
knopp committed
1164
    }
1165

knopp's avatar
knopp committed
1166
    rnti = UE_RNTI(module_idP, UE_id);
1167

knopp's avatar
knopp committed
1168 1169 1170 1171 1172
    if (rnti == NOT_A_RNTI) {
      LOG_W(MAC, "[eNB %d] frame %d subfarme %d, UE %d: no RNTI \n",
	    module_idP, frameP, subframeP, UE_id);
      continue;
    }
1173

knopp's avatar
knopp committed
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 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
    drop_ue = 0;
    /* let's drop the UE if get_eNB_UE_stats returns NULL when calling it with any of the UE's active UL CCs */
    /* TODO: refine?

       for (n=0; n<UE_list->numactiveULCCs[UE_id]; n++) {
       CC_id = UE_list->ordered_ULCCids[n][UE_id];

       if (mac_xface->get_eNB_UE_stats(module_idP,CC_id,rnti) == NULL) {
       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;
       break;
       }
       } */
    if (drop_ue == 1) {
      /* we can't come here, ulsch_scheduler_pre_processor won't put in the list a UE with no PHY context */
      abort();
      /* TODO: this is a hack. Sometimes the UE has no PHY context but
       * is still present in the MAC with 'ul_failure_timer' = 0 and
       * 'ul_out_of_sync' = 0. It seems wrong and the UE stays there forever. Let's
       * start an UL out of sync procedure in this case.
       * The root cause of this problem has to be found and corrected.
       * In the meantime, this hack...
       */
      if (UE_list->UE_sched_ctrl[UE_id].ul_failure_timer == 0 &&
	  UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync == 0) {
	LOG_W(MAC,
	      "[eNB %d] frame %d subframe %d, UE %d/%x CC %d: UE in weird state, let's put it 'out of sync'\n",
	      module_idP, frameP, subframeP, UE_id, rnti, CC_id);
	// inform RRC of failure and clear timer
	mac_eNB_rrc_ul_failure(module_idP, CC_id, frameP,
			       subframeP, rnti);
	UE_list->UE_sched_ctrl[UE_id].ul_failure_timer = 0;
	UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync = 1;
      }
      continue;
    }
    // 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];
      N_RB_UL = to_prb(cc[CC_id].ul_Bandwidth);

      /*
	aggregation=get_aggregation(get_bw_index(module_idP,CC_id),
	eNB_UE_stats->dl_cqi,
	format0);
      */

      if (CCE_allocation_infeasible
	  (module_idP, CC_id, 1, 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);
	continue;	// break;
      }

      /* be sure that there are some free RBs */
      if (first_rb[CC_id] >= N_RB_UL - 1) {
	LOG_W(MAC,
	      "[eNB %d] frame %d subframe %d, UE %d/%x CC %d: dropping, not enough RBs\n",
	      module_idP, frameP, subframeP, UE_id, rnti, CC_id);
	continue;
      }
      //      if (eNB_UE_stats->mode == PUSCH) { // ue has a ulsch channel

      UE_template = &UE_list->UE_template[CC_id][UE_id];
      UE_sched_ctrl = &UE_list->UE_sched_ctrl[UE_id];
      harq_pid = subframe2harqpid(&cc[CC_id], sched_frame, sched_subframeP);
      round = UE_sched_ctrl->round_UL[CC_id][harq_pid];
      AssertFatal(round < 8, "round %d > 7 for UE %d/%x\n", round,
		  UE_id, rnti);
      LOG_D(MAC,
	    "[eNB %d] frame %d subframe %d (sched_frame %d, sched_subframe %d), Checking PUSCH %d for UE %d/%x CC %d : aggregation level %d, N_RB_UL %d\n",
	    module_idP, frameP, subframeP, sched_frame, sched_subframeP, harq_pid, UE_id, rnti,
	    CC_id, aggregation, N_RB_UL);

1250
      RC.eNB[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP * 10) + subframeP] = UE_template->estimated_ul_buffer;
knopp's avatar
knopp committed
1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273
      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_BO,RC.eNB[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP *
							   10) +
							  subframeP]);
      if (UE_is_to_be_scheduled(module_idP, CC_id, UE_id) > 0 || round > 0)	// || ((frameP%10)==0))
	// 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
	{
	  LOG_D(MAC,
		"[eNB %d][PUSCH %d] Frame %d subframe %d Scheduling UE %d/%x in round %d(SR %d,UL_inactivity timer %d,UL_failure timer %d,cqi_req_timer %d)\n",
		module_idP, harq_pid, frameP, subframeP, UE_id, rnti,
		round, UE_template->ul_SR,
		UE_sched_ctrl->ul_inactivity_timer,
		UE_sched_ctrl->ul_failure_timer,
		UE_sched_ctrl->cqi_req_timer);
	  // reset the scheduling request
	  UE_template->ul_SR = 0;
	  status = mac_eNB_get_rrc_status(module_idP, rnti);
	  if (status < RRC_CONNECTED)
	    cqi_req = 0;
	  else if (UE_sched_ctrl->cqi_req_timer > 30) {
	    if (nfapi_mode) {
	      cqi_req = 0;
	    } else {
	      cqi_req = 1;
1274
	    }
knopp's avatar
knopp committed
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
	    UE_sched_ctrl->cqi_req_timer = 0;
	  } else
	    cqi_req = 0;

	  //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 = UE_sched_ctrl->pusch_snr[CC_id];
	  target_rx_power = 178;

	  // this assumes accumulated tpc
	  // make sure that we are only sending a tpc update once a frame, otherwise the control loop will freak out
	  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
	    {
	      UE_template->pusch_tpc_tx_frame = frameP;
	      UE_template->pusch_tpc_tx_subframe = subframeP;
	      if (normalized_rx_power > (target_rx_power + 4)) {
		tpc = 0;	//-1
		tpc_accumulated--;
	      } else if (normalized_rx_power < (target_rx_power - 4)) {
		tpc = 2;	//+1
		tpc_accumulated++;
	      } else {
		tpc = 1;	//0
	      }
	    } else {
	    tpc = 1;	//0
	  }
	  //tpc = 1;
	  if (tpc != 1) {
	    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",
		  module_idP, frameP, subframeP, harq_pid, tpc,
		  tpc_accumulated, normalized_rx_power,
		  target_rx_power);
	  }
	  // new transmission
	  if (round == 0) {

	    ndi = 1 - UE_template->oldNDI_UL[harq_pid];
	    UE_template->oldNDI_UL[harq_pid] = ndi;
nikaeinn's avatar
nikaeinn committed
1319
	    UE_list->eNB_UE_stats[CC_id][UE_id].normalized_rx_power = normalized_rx_power;
knopp's avatar
knopp committed
1320
	    UE_list->eNB_UE_stats[CC_id][UE_id].target_rx_power = target_rx_power;
nikaeinn's avatar
nikaeinn committed
1321 1322 1323
		UE_template->mcs_UL[harq_pid] = cmin(UE_template->pre_assigned_mcs_ul, slice_maxmcs_uplink[slice_id]);
		UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs1= UE_template->mcs_UL[harq_pid];
		//cmin (UE_template->pre_assigned_mcs_ul, openair_daq_vars.target_ue_ul_mcs); // adjust, based on user-defined MCS
knopp's avatar
knopp committed
1324
	    if (UE_template->pre_allocated_rb_table_index_ul >= 0) {
1325
	      rb_table_index = UE_template->pre_allocated_rb_table_index_ul;
knopp's avatar
knopp committed
1326 1327 1328
	    } else {
	      UE_template->mcs_UL[harq_pid] = 10;	//cmin (10, openair_daq_vars.target_ue_ul_mcs);
	      rb_table_index = 5;	// for PHR
1329 1330
	    }

knopp's avatar
knopp committed
1331 1332 1333 1334
	    UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs2 = UE_template->mcs_UL[harq_pid];
	    //            buffer_occupancy = UE_template->ul_total_buffer;


1335 1336 1337
	    while (((rb_table[rb_table_index] > (N_RB_UL - 1 - first_rb[CC_id]))
                    || (rb_table[rb_table_index] > 45))
                    && (rb_table_index > 0)) {
knopp's avatar
knopp committed
1338
	      rb_table_index--;
1339
	    }
knopp's avatar
knopp committed
1340 1341 1342 1343 1344

	    UE_template->TBS_UL[harq_pid] = get_TBS_UL(UE_template->mcs_UL[harq_pid],
						       rb_table[rb_table_index]);
	    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 = UE_template->TBS_UL[harq_pid];
1345
            UE_list->eNB_UE_stats[CC_id][UE_id].total_ulsch_TBS += UE_template->TBS_UL[harq_pid];
knopp's avatar
knopp committed
1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375
	    //            buffer_occupancy -= TBS;

	    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(UE_template->mcs_UL[harq_pid]),
	      T_INT(first_rb[CC_id]),
	      T_INT(rb_table[rb_table_index]),
	      T_INT(UE_template->TBS_UL[harq_pid]), T_INT(ndi));

	    if (mac_eNB_get_rrc_status(module_idP, rnti) < RRC_CONNECTED)
	      LOG_D(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,
		    UE_template->mcs_UL[harq_pid],
		    first_rb[CC_id], rb_table[rb_table_index],
		    rb_table_index,
		    UE_template->TBS_UL[harq_pid], harq_pid);

	    // bad indices : 20 (40 PRB), 21 (45 PRB), 22 (48 PRB)
	    //store for possible retransmission
	    UE_template->nb_rb_ul[harq_pid] = rb_table[rb_table_index];
	    UE_template->first_rb_ul[harq_pid] = first_rb[CC_id];

	    UE_sched_ctrl->ul_scheduled |= (1 << harq_pid);
	    if (UE_id == UE_list->head)
	      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_SCHEDULED,
						      UE_sched_ctrl->ul_scheduled);

1376
	    // adjust scheduled UL bytes by TBS, wait for UL sdus to do final update
1377
	    LOG_D(MAC,
1378
		  "[eNB %d] CC_id %d UE %d/%x : adjusting scheduled_ul_bytes, old %d, TBS %d\n",
knopp's avatar
knopp committed
1379
		  module_idP, CC_id, UE_id, rnti,
1380
		  UE_template->scheduled_ul_bytes,
knopp's avatar
knopp committed
1381
		  UE_template->TBS_UL[harq_pid]);
1382 1383 1384 1385 1386

            UE_template->scheduled_ul_bytes += UE_template->TBS_UL[harq_pid];

            LOG_D(MAC, "scheduled_ul_bytes, new %d\n", UE_template->scheduled_ul_bytes);

knopp's avatar
knopp committed
1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440
	    // Cyclic shift for DM RS
	    cshift = 0;	// values from 0 to 7 can be used for mapping the cyclic shift (36.211 , Table 5.5.2.1.1-1)
	    // save it for a potential retransmission
	    UE_template->cshift[harq_pid] = cshift;

	    hi_dci0_pdu = &hi_dci0_req_body->hi_dci0_pdu_list[hi_dci0_req_body->number_of_dci + hi_dci0_req_body->number_of_hi];
	    memset((void *) hi_dci0_pdu, 0,sizeof(nfapi_hi_dci0_request_pdu_t));
	    hi_dci0_pdu->pdu_type = NFAPI_HI_DCI0_DCI_PDU_TYPE;
	    hi_dci0_pdu->pdu_size = 2 + sizeof(nfapi_hi_dci0_dci_pdu);
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.tl.tag = NFAPI_HI_DCI0_REQUEST_DCI_PDU_REL8_TAG;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.dci_format = NFAPI_UL_DCI_FORMAT_0;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.aggregation_level = aggregation;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.rnti = rnti;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.transmission_power = 6000;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.resource_block_start = first_rb[CC_id];
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.number_of_resource_block = rb_table[rb_table_index];
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.mcs_1 = UE_template->mcs_UL[harq_pid];
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.cyclic_shift_2_for_drms = cshift;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.frequency_hopping_enabled_flag = 0;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.new_data_indication_1 = ndi;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.tpc = tpc;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.cqi_csi_request = cqi_req;
	    hi_dci0_pdu->dci_pdu.dci_pdu_rel8.dl_assignment_index = UE_template->DAI_ul[sched_subframeP];

	    hi_dci0_req_body->number_of_dci++;
	    hi_dci0_req_body->sfnsf = sfnsf_add_subframe(frameP, subframeP, 4);
	    hi_dci0_req_body->tl.tag = NFAPI_HI_DCI0_REQUEST_BODY_TAG;

	    hi_dci0_req->sfn_sf = frameP<<4|subframeP; // sfnsf_add_subframe(sched_frame, sched_subframeP, 0); // sunday!
	    hi_dci0_req->header.message_id = NFAPI_HI_DCI0_REQUEST;


	    LOG_D(MAC,
		  "[PUSCH %d] Frame %d, Subframe %d: Adding UL CONFIG.Request for UE %d/%x, ulsch_frame %d, ulsch_subframe %d\n",
		  harq_pid, frameP, subframeP, UE_id, rnti,
		  sched_frame, sched_subframeP);

	    // Add UL_config PDUs
	    fill_nfapi_ulsch_config_request_rel8(&ul_req_tmp_body->ul_config_pdu_list[ul_req_tmp_body->number_of_pdus], cqi_req, cc, UE_template->physicalConfigDedicated, get_tmode(module_idP, CC_id, UE_id), mac->ul_handle, rnti, first_rb[CC_id],	// resource_block_start
						 rb_table[rb_table_index],	// number_of_resource_blocks
						 UE_template->mcs_UL[harq_pid], cshift,	// cyclic_shift_2_for_drms
						 0,	// frequency_hopping_enabled_flag
						 0,	// frequency_hopping_bits
						 ndi,	// new_data_indication
						 0,	// redundancy_version
						 harq_pid,	// harq_process_number
						 0,	// ul_tx_mode
						 0,	// current_tx_nb
						 0,	// n_srs
						 get_TBS_UL
						 (UE_template->
						  mcs_UL[harq_pid],
						  rb_table
						  [rb_table_index]));
1441
#ifdef Rel14
knopp's avatar
knopp committed
1442 1443 1444 1445 1446 1447 1448
	    if (UE_template->rach_resource_type > 0) {	// This is a BL/CE UE allocation
	      fill_nfapi_ulsch_config_request_emtc(&ul_req_tmp_body->ul_config_pdu_list[ul_req_tmp_body->number_of_pdus], UE_template->rach_resource_type > 2 ? 2 : 1, 1,	//total_number_of_repetitions
						   1,	//repetition_number
						   (frameP *
						    10) +
						   subframeP);
	    }
1449
#endif
knopp's avatar
knopp committed
1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477
	    ul_req_tmp->header.message_id = NFAPI_UL_CONFIG_REQUEST;
	    ul_req_tmp_body->number_of_pdus++;
	    ul_req_tmp_body->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
	    mac->ul_handle++;

	    uint16_t ul_sched_frame = sched_frame;
	    uint16_t ul_sched_subframeP = sched_subframeP;

	    add_subframe(&ul_sched_frame, &ul_sched_subframeP, 2);
	    ul_req_tmp->sfn_sf = ul_sched_frame<<4|ul_sched_subframeP;

	    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);
	    LOG_D(MAC,"[PUSCH %d] SFN/SF:%04d%d UL_CFG:SFN/SF:%04d%d CQI:%d for UE %d/%x\n", harq_pid,frameP,subframeP,ul_sched_frame,ul_sched_subframeP,cqi_req,UE_id,rnti);

	    // increment first rb for next UE allocation
	    first_rb[CC_id] += rb_table[rb_table_index];
	  } else {	// round > 0 => retransmission
	    T(T_ENB_MAC_UE_UL_SCHEDULE_RETRANSMISSION,
	      T_INT(module_idP), T_INT(CC_id), T_INT(rnti),
	      T_INT(frameP), T_INT(subframeP), T_INT(harq_pid),
	      T_INT(UE_template->mcs_UL[harq_pid]),
	      T_INT(first_rb[CC_id]),
	      T_INT(rb_table[rb_table_index]), T_INT(round));

1478 1479 1480 1481
#if 0
            /* This is done in rx_sdu, as it has to.
             * Since the code is a bit different, let's keep this version here for review, in case of problem.
             */
knopp's avatar
knopp committed
1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504
	    // fill in NAK information

	    hi_dci0_pdu = &hi_dci0_req_body->hi_dci0_pdu_list[hi_dci0_req_body->number_of_dci + hi_dci0_req_body->number_of_hi];
	    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.tl.tag = NFAPI_HI_DCI0_REQUEST_HI_PDU_REL8_TAG;
	    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.resource_block_start = UE_template->first_rb_ul[harq_pid];
	    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.cyclic_shift_2_for_drms = UE_template->cshift[harq_pid];
	    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.hi_value = 0;
	    hi_dci0_req_body->number_of_hi++;
	    hi_dci0_req_body->sfnsf = sfnsf_add_subframe(sched_frame, sched_subframeP, 0);
	    hi_dci0_req->sfn_sf = frameP<<4|subframeP;
	    hi_dci0_req->header.message_id = NFAPI_HI_DCI0_REQUEST;

	    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, TBS %d, round %d)\n",
		  module_idP, harq_pid, rnti, CC_id, frameP,
		  subframeP, UE_id, UE_template->mcs_UL[harq_pid],
		  UE_template->first_rb_ul[harq_pid],
		  UE_template->nb_rb_ul[harq_pid],
		  UE_template->TBS_UL[harq_pid], round);
1505
#endif
knopp's avatar
knopp committed
1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523
	    // Add UL_config PDUs
	    LOG_D(MAC,
		  "[PUSCH %d] Frame %d, Subframe %d: Adding UL CONFIG.Request for UE %d/%x, ulsch_frame %d, ulsch_subframe %d\n",
		  harq_pid, frameP, subframeP, UE_id, rnti,
		  sched_frame, sched_subframeP);
	    fill_nfapi_ulsch_config_request_rel8(&ul_req_tmp_body->ul_config_pdu_list[ul_req_tmp_body->number_of_pdus], cqi_req, cc, UE_template->physicalConfigDedicated, get_tmode(module_idP, CC_id, UE_id), mac->ul_handle, rnti, UE_template->first_rb_ul[harq_pid],	// resource_block_start
						 UE_template->nb_rb_ul[harq_pid],	// number_of_resource_blocks
						 UE_template->mcs_UL[harq_pid], cshift,	// cyclic_shift_2_for_drms
						 0,	// frequency_hopping_enabled_flag
						 0,	// frequency_hopping_bits
						 UE_template->oldNDI_UL[harq_pid],	// new_data_indication
						 rvidx_tab[round & 3],	// redundancy_version
						 harq_pid,	// harq_process_number
						 0,	// ul_tx_mode
						 0,	// current_tx_nb
						 0,	// n_srs
						 UE_template->
						 TBS_UL[harq_pid]);
1524
#ifdef Rel14
knopp's avatar
knopp committed
1525 1526 1527 1528 1529 1530 1531
	    if (UE_template->rach_resource_type > 0) {	// This is a BL/CE UE allocation
	      fill_nfapi_ulsch_config_request_emtc(&ul_req_tmp_body->ul_config_pdu_list[ul_req_tmp_body->number_of_pdus], UE_template->rach_resource_type > 2 ? 2 : 1, 1,	//total_number_of_repetitions
						   1,	//repetition_number
						   (frameP *
						    10) +
						   subframeP);
	    }
1532
#endif
knopp's avatar
knopp committed
1533 1534
	    ul_req_tmp_body->number_of_pdus++;
	    mac->ul_handle++;
1535

knopp's avatar
knopp committed
1536
	    ul_req_tmp_body->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
1537

knopp's avatar
knopp committed
1538 1539
	    ul_req_tmp->sfn_sf = sched_frame<<4|sched_subframeP;
	    ul_req_tmp->header.message_id = NFAPI_UL_CONFIG_REQUEST;
1540

knopp's avatar
knopp committed
1541 1542 1543 1544
	    LOG_D(MAC,"[PUSCH %d] Frame %d, Subframe %d: Adding UL CONFIG.Request for UE %d/%x, ulsch_frame %d, ulsch_subframe %d cqi_req %d\n",
		  harq_pid,frameP,subframeP,UE_id,rnti,sched_frame,sched_subframeP,cqi_req);
	  }		/*
			  else if (round > 0) { //we schedule a retransmission
1545

knopp's avatar
knopp committed
1546
			  ndi = UE_template->oldNDI_UL[harq_pid];
1547

knopp's avatar
knopp committed
1548 1549 1550 1551
			  if ((round&3)==0) {
			  mcs = openair_daq_vars.target_ue_ul_mcs;
			  } else {
			  mcs = rvidx_tab[round&3] + 28; //not correct for round==4!
1552

knopp's avatar
knopp committed
1553
			  }
1554

knopp's avatar
knopp committed
1555 1556 1557 1558
			  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",
			  module_idP,UE_id,rnti,CC_id,frameP,subframeP,mcs,
			  first_rb[CC_id],UE_template->nb_rb_ul[harq_pid],
			  harq_pid, round);
1559

knopp's avatar
knopp committed
1560 1561 1562 1563
			  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
1564

knopp's avatar
knopp committed
1565 1566 1567 1568 1569 1570 1571
			  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;
			  }
			*/
1572

knopp's avatar
knopp committed
1573 1574 1575
	}			// UE_is_to_be_scheduled
    }			// loop over UE_id
  }				// loop of CC_id
1576
}