eNB_scheduler_ulsch.c 86.4 KB
Newer Older
1 2 3 4 5
/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
Cedric Roux's avatar
Cedric Roux committed
6
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
7 8 9 10 11 12 13 14 15 16 17 18 19 20
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
nikaeinn's avatar
nikaeinn committed
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
nikaeinn's avatar
nikaeinn committed
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

Cedric Roux's avatar
Cedric Roux committed
60 61
#include "T.h"

62
#define ENABLE_MAC_PAYLOAD_DEBUG
63 64
#define DEBUG_eNB_SCHEDULER 1

65 66 67 68 69 70 71 72
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;

73
// This table holds the allowable PRB sizes for ULSCH transmissions
74 75 76 77
uint8_t rb_table[34] =
    { 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32,
    36, 40, 45, 48, 50, 54, 60, 64, 72, 75, 80, 81, 90, 96, 100
};
Xu Bo's avatar
Xu Bo committed
78
extern mui_t    rrc_eNB_mui;
79 80 81 82 83 84 85 86 87 88

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
89
{
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121
    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);

    UE_list_t *UE_list = &mac->UE_list;
    int crnti_rx = 0;
    int old_buffer_info;
    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);
122
    }
123

124 125 126 127 128 129 130 131 132 133 134
    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;
135 136 137 138
            if (UE_list->UE_sched_ctrl[UE_id].ul_failure_timer > 0) {
              LOG_I(MAC, "UE %d rnti %x: UL Failure timer %d clear to 0\n", UE_id, rntiP,
              UE_list->UE_sched_ctrl[UE_id].ul_failure_timer);
            }
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
	    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));
	    }
	} 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);

168 169 170 171 172 173 174 175 176 177
      //      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;
        if(find_RA_id(enb_mod_idP, CC_idP, current_rnti) != -1)
          cancel_ra_proc(enb_mod_idP, CC_idP, frameP, current_rnti);
      } else
        UE_list->UE_sched_ctrl[UE_id].round_UL[CC_idP][harq_pid]++;
178 179 180 181 182 183 184 185 186 187 188 189 190
	    return;

	}
    } 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);

	LOG_D(MAC,
Cedric Roux's avatar
Cedric Roux committed
191
	      "[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",
192 193 194 195 196 197 198 199 200 201 202 203 204
	      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);
205
	    if (ra[RA_id].msg3_round >=
206 207 208 209 210 211 212 213 214 215 216
		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
jftt_wangshanshan's avatar
jftt_wangshanshan committed
217 218 219
		get_Msg3allocret(&mac->common_channels[CC_idP],
		                  ra[RA_id].Msg3_subframe, ra[RA_id].Msg3_frame,
		                  &ra[RA_id].Msg3_frame, &ra[RA_id].Msg3_subframe);
220 221 222 223 224 225 226 227 228 229
		add_msg3(enb_mod_idP, CC_idP, &ra[RA_id], frameP,
			 subframeP);
	    }
	    return;
	}
    } else {
	LOG_W(MAC,
	      "Cannot find UE or RA corresponding to ULSCH rnti %x, dropping it\n",
	      current_rnti);
	return;
knopp's avatar
 
knopp committed
230
    }
231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276
    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]));

	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;
		LOG_D(MAC,
		      "[eNB %d] CC_id %d MAC CE_LCID %d : Received PHR PH = %d (db)\n",
		      enb_mod_idP, CC_idP, rx_ces[i],
		      UE_list->UE_template[CC_idP][UE_id].phr_info);
		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);
Haruki Naoi's avatar
Haruki Naoi committed
277
		LOG_I(MAC,
278 279 280
		      "[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);
281
		/* receiving CRNTI means that the current rnti has to go away */
Xu Bo's avatar
Xu Bo committed
282 283
		//cancel_ra_proc(enb_mod_idP, CC_idP, frameP,
		//	       current_rnti);
284 285 286 287 288 289 290 291 292 293 294 295
		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.
		     */
Xu Bo's avatar
Xu Bo committed
296 297 298 299 300 301 302 303 304 305 306 307 308
          for (ii = 0; ii < NB_RA_PROC_MAX; ii++) {
            ra = &mac->common_channels[CC_idP].ra[ii];
            if ((ra->rnti == current_rnti) && (ra->state != IDLE)) {
                mac_rrc_data_ind(enb_mod_idP,
                                CC_idP,
                                frameP, subframeP,
                                old_rnti,
                                DCCH,
                                (uint8_t *) payload_ptr,
                                rx_lengths[i],
                                ENB_FLAG_YES, enb_mod_idP, 0);
                // prepare transmission of Msg4(RRCConnectionReconfiguration)
                ra->state = MSGCRNTI;
Haruki Naoi's avatar
Haruki Naoi committed
309
                LOG_I(MAC,
310
                     "[eNB %d] Frame %d, Subframe %d CC_id %d : (rnti %x UE_id %d) RRCConnectionReconfiguration(Msg4)\n",
Xu Bo's avatar
Xu Bo committed
311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334
                     enb_mod_idP, frameP, subframeP, CC_idP, old_rnti, old_UE_id);
                //
                UE_id = old_UE_id;
                current_rnti = old_rnti;
                ra->rnti = old_rnti;
                ra->crnti_rrc_mui = rrc_eNB_mui-1;
                ra->crnti_harq_pid = -1;
                //clear timer
                UE_list->UE_sched_ctrl[UE_id].uplane_inactivity_timer = 0;
                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);
                }
                UE_list->UE_template[CC_idP][UE_id].ul_SR = 1;
                UE_list->UE_sched_ctrl[UE_id].crnti_reconfigurationcomplete_flag = 1;
                break;
              }
          }
        }else{
          cancel_ra_proc(enb_mod_idP, CC_idP, frameP,current_rnti);
        }
335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564
		crnti_rx = 1;
		payload_ptr += 2;
		break;
	    }

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

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

		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) {

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

		    // update buffer info

		    UE_list->UE_template[CC_idP][UE_id].
			ul_buffer_info[lcgid] =
			BSR_TABLE[UE_list->UE_template[CC_idP][UE_id].
				  bsr_info[lcgid]];

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

		    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)
			LOG_D(MAC,
			      "[eNB %d] CC_id %d MAC CE_LCID %d : ul_total_buffer = %d (lcg increment %d)\n",
			      enb_mod_idP, CC_idP, rx_ces[i],
			      UE_list->UE_template[CC_idP][UE_id].
			      ul_total_buffer,
			      UE_list->UE_template[CC_idP][UE_id].
			      ul_buffer_info[lcgid]);
		} else {

		}
		payload_ptr += 1;	//sizeof(SHORT_BSR); // fixme
	    }
	    break;

	case LONG_BSR:
	    if (UE_id != -1) {
		UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0] =
		    ((payload_ptr[0] & 0xFC) >> 2);
		UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1] =
		    ((payload_ptr[0] & 0x03) << 4) |
		    ((payload_ptr[1] & 0xF0) >> 4);
		UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2] =
		    ((payload_ptr[1] & 0x0F) << 2) |
		    ((payload_ptr[2] & 0xC0) >> 6);
		UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3] =
		    (payload_ptr[2] & 0x3F);

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

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

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

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

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

		LOG_D(MAC,
		      "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR 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].bsr_info[LCGID0],
		      UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1],
		      UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2],
		      UE_list->UE_template[CC_idP][UE_id].
		      bsr_info[LCGID3]);
		if (crnti_rx == 1)
		    LOG_D(MAC,
			  "[eNB %d] CC_id %d MAC CE_LCID %d: Received long BSR 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].
			  bsr_info[LCGID0],
			  UE_list->UE_template[CC_idP][UE_id].
			  bsr_info[LCGID1],
			  UE_list->UE_template[CC_idP][UE_id].
			  bsr_info[LCGID2],
			  UE_list->UE_template[CC_idP][UE_id].
			  bsr_info[LCGID3]);

		if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID0] ==
		    0) {
		    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;
		}

		if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID1] ==
		    0) {
		    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;
		}

		if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID2] ==
		    0) {
		    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;
		}

		if (UE_list->UE_template[CC_idP][UE_id].bsr_info[LCGID3] ==
		    0) {
		    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;

		}
	    }

	    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;
	}
565
    }
Cedric Roux's avatar
Cedric Roux committed
566

567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660
    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),
	  T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
	  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),
	  T_INT(current_rnti), T_INT(frameP), T_INT(subframeP),
	  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];

		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);

		if ((ra->rnti == current_rnti) && (ra->state != IDLE)) {

		    //payload_ptr = parse_ulsch_header(msg3,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,msg3_len);

		    if (UE_id < 0) {
			memcpy(&ra->cont_res_id[0], payload_ptr, 6);
			LOG_D(MAC,
			      "[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
#ifdef Rel14
					,
					mac->common_channels[CC_idP].
					ra[ii].rach_resource_type
#endif
			     )) == -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],
				     ENB_FLAG_YES, enb_mod_idP, 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;



jftt_wangshanshan's avatar
jftt_wangshanshan committed
661
		    if(mac->common_channels[CC_idP].tdd_Config!=NULL){
662 663 664 665 666 667 668
		        switch(mac->common_channels[CC_idP].tdd_Config->subframeAssignment){
		          case 1:
		            ra->Msg4_frame = frameP + ((subframeP > 2) ? 1 : 0);
		            ra->Msg4_subframe = (subframeP + 7) % 10;
		            break;
		          // TODO need to be complete for other tdd configs.
		        }
jftt_wangshanshan's avatar
jftt_wangshanshan committed
669
		    }else{
670
		    // Program Msg4 PDCCH+DLSCH/MPDCCH transmission 4 subframes from now, // Check if this is ok for BL/CE, or if the rule is different
jftt_wangshanshan's avatar
jftt_wangshanshan committed
671 672 673 674
		      ra->Msg4_frame = frameP + ((subframeP > 5) ? 1 : 0);
		      ra->Msg4_subframe = (subframeP + 4) % 10;
		    }

Xu Bo's avatar
Xu Bo committed
675
                    UE_list->UE_sched_ctrl[UE_id].crnti_reconfigurationcomplete_flag = 0;
676 677 678 679 680 681 682 683
		}		// 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
684

gauthier's avatar
 
gauthier committed
685

knopp's avatar
 
knopp committed
686
#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
687 688 689 690 691 692
	    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
693
#endif
gauthier's avatar
 
gauthier committed
694

695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731
	    if (UE_id != -1) {
		// 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;

		LOG_D(MAC,
		      "[eNB %d] CC_id %d Frame %d : ULSCH -> UL-DCCH, received %d bytes form UE %d on LCID %d \n",
		      enb_mod_idP, CC_idP, frameP, rx_lengths[i], UE_id,
		      rx_lcids[i]);

		mac_rlc_data_ind(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];


	    }

	    /* UE_id != -1 */
	    // }
	    break;

	    // all the DRBS
	case DTCH:
	default:
gauthier's avatar
 
gauthier committed
732

knopp's avatar
 
knopp committed
733
#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
734 735 736 737 738 739
	    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");
740
#endif
741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778
	    if (rx_lcids[i] < NB_RB_MAX) {
		LOG_D(MAC,
		      "[eNB %d] CC_id %d Frame %d : ULSCH -> UL-DTCH, received %d bytes from UE %d for lcid %d\n",
		      enb_mod_idP, CC_idP, frameP, rx_lengths[i], UE_id,
		      rx_lcids[i]);

		if (UE_id != -1) {
		    // 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]]]);

		    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;
		    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];
779 780
                        //clear uplane_inactivity_timer
	                UE_list->UE_sched_ctrl[UE_id].uplane_inactivity_timer = 0;
781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799
		    } 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);
		}
	    }

	    break;
	}

	payload_ptr += rx_lengths[i];
knopp's avatar
 
knopp committed
800
    }
Cedric Roux's avatar
Cedric Roux committed
801

802 803 804 805
    // 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);
jftt_wangshanshan's avatar
jftt_wangshanshan committed
806 807 808 809
    nfapi_hi_dci0_request_t *hi_dci0_req;
    uint8_t sf_ahead_dl = ul_subframe2_k_phich(&mac->common_channels[CC_idP] , subframeP);
    hi_dci0_req = &mac->HI_DCI0_req[CC_idP][(subframeP+sf_ahead_dl)%10];

810
    nfapi_hi_dci0_request_body_t *hi_dci0_req_body = &hi_dci0_req->hi_dci0_request_body;
811
    nfapi_hi_dci0_request_pdu_t *hi_dci0_pdu =
812
	&hi_dci0_req_body->hi_dci0_pdu_list[hi_dci0_req_body->number_of_dci + hi_dci0_req_body->number_of_hi];
813 814 815
    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);
816
    hi_dci0_pdu->hi_pdu.hi_pdu_rel8.tl.tag = NFAPI_HI_DCI0_REQUEST_HI_PDU_REL8_TAG;
817 818 819
    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;
820 821 822
    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;
jftt_wangshanshan's avatar
jftt_wangshanshan committed
823
    hi_dci0_req->sfn_sf = sfnsf_add_subframe(frameP,subframeP,sf_ahead_dl);
824
    hi_dci0_req->header.message_id = NFAPI_HI_DCI0_REQUEST;
825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843

    /* 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;
	}
roux's avatar
roux committed
844
    }
845

846 847 848
    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
849 850
}

851 852
uint32_t bytes_to_bsr_index(int32_t nbytes)
{
853
    uint32_t i = 0;
854

855 856 857
    if (nbytes < 0) {
	return (0);
    }
858

859 860 861
    while ((i < BSR_TABLE_SIZE) && (BSR_TABLE[i] <= nbytes)) {
	i++;
    }
862

863
    return (i - 1);
864 865
}

866 867 868
void
add_ue_ulsch_info(module_id_t module_idP, int CC_id, int UE_id,
		  sub_frame_t subframeP, UE_ULSCH_STATUS status)
869
{
870 871 872 873
    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;
874

875
    eNB_ulsch_info[module_idP][CC_id][UE_id].serving_num++;
876 877 878
}

unsigned char *parse_ulsch_header(unsigned char *mac_header,
879 880 881 882 883 884
				  unsigned char *num_ce,
				  unsigned char *num_sdu,
				  unsigned char *rx_ces,
				  unsigned char *rx_lcids,
				  unsigned short *rx_lengths,
				  unsigned short tb_length)
885
{
886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950
    unsigned char not_done = 1, num_ces = 0, num_sdus =
	0, lcid, num_sdu_cnt;
    unsigned char *mac_header_ptr = mac_header;
    unsigned short length, ce_len = 0;

    while (not_done == 1) {

	if (((SCH_SUBHEADER_FIXED *) mac_header_ptr)->E == 0) {
	    not_done = 0;
	}

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

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

		for (num_sdu_cnt = 0; num_sdu_cnt < num_sdus;
		     num_sdu_cnt++) {
		    length -= rx_lengths[num_sdu_cnt];
		}
	    } 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);
		}
	    }

	    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");
		}
	    }
	}
951
    }
952

953 954
    *num_ce = num_ces;
    *num_sdu = num_sdus;
955

956
    return (mac_header_ptr);
957 958
}

959 960 961 962 963
/* 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).
 */
964 965 966 967 968 969
void
set_msg3_subframe(module_id_t Mod_id,
		  int CC_id,
		  int frame,
		  int subframe, int rnti, int Msg3_frame,
		  int Msg3_subframe)
970
{
971 972 973 974 975 976 977 978 979
    eNB_MAC_INST *mac = RC.mac[Mod_id];
    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;
	}
980 981
    }
}
982

983

984 985 986
void
schedule_ulsch(module_id_t module_idP, frame_t frameP,
	       sub_frame_t subframeP)
Cedric Roux's avatar
Cedric Roux committed
987
{
Xu Bo's avatar
Xu Bo committed
988 989 990 991
#ifndef UE_EXPANSION
  uint16_t first_rb[MAX_NUM_CCs];
#endif
  uint16_t i;
992
  int CC_id;
Xu Bo's avatar
Xu Bo committed
993
  eNB_MAC_INST *mac = RC.mac[module_idP];
994
  COMMON_channels_t *cc;
Xu Bo's avatar
Xu Bo committed
995
  int sched_frame=frameP;
gauthier's avatar
 
gauthier committed
996

Xu Bo's avatar
Xu Bo committed
997
  start_meas(&mac->schedule_ulsch);
gauthier's avatar
 
gauthier committed
998

999
  int sched_subframe = (subframeP+4)%10;
Xu Bo's avatar
Xu Bo committed
1000
  if (sched_subframe < subframeP) sched_frame++;
1001

Xu Bo's avatar
Xu Bo committed
1002
  cc = &mac->common_channels[0];
1003 1004 1005 1006 1007 1008 1009
  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)||
jftt_wangshanshan's avatar
jftt_wangshanshan committed
1010 1011
          (tdd_sfa == 3)) sched_subframe = 4;
      else if (tdd_sfa==6) sched_subframe = 7;
1012 1013 1014 1015
      else return;
      break;
    case 1:
      if ((tdd_sfa==0)||
Cedric Roux's avatar
Cedric Roux committed
1016
          (tdd_sfa==1)) sched_subframe = 7;
1017
      else if (tdd_sfa==6) sched_subframe = 8;
jftt_wangshanshan's avatar
jftt_wangshanshan committed
1018
      else return;
1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031
      break;
    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;
jftt_wangshanshan's avatar
jftt_wangshanshan committed
1032
      else if (tdd_sfa==6) sched_subframe = 2;
1033 1034 1035
      else return;
      break;
    case 6:
jftt_wangshanshan's avatar
jftt_wangshanshan committed
1036
      if (tdd_sfa==0 || tdd_sfa==1)      sched_subframe = 2;
1037 1038 1039 1040 1041 1042
      else if (tdd_sfa==6) sched_subframe = 3;
      else return;
      break;
    case 7:
      return;
    case 8:
jftt_wangshanshan's avatar
jftt_wangshanshan committed
1043
      if ((tdd_sfa>=2) && (tdd_sfa<=5)) sched_subframe=2;
1044 1045 1046 1047 1048 1049 1050 1051 1052
      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;
    }
  }
Xu Bo's avatar
Xu Bo committed
1053 1054

#ifndef UE_EXPANSION
1055
  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
gauthier's avatar
 
gauthier committed
1056

1057 1058


gauthier's avatar
 
gauthier committed
1059

1060 1061
	//leave out first RB for PUCCH
	first_rb[CC_id] = 1;
gauthier's avatar
 
gauthier committed
1062

1063 1064 1065 1066
	// 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
1067

1068 1069
	// default function for default scheduling
	//
gauthier's avatar
 
gauthier committed
1070

1071 1072 1073 1074
	// 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?)
Cedric Roux's avatar
Cedric Roux committed
1075

1076 1077 1078 1079 1080 1081 1082 1083
	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
1084
    }
1085

1086
  schedule_ulsch_rnti(module_idP, frameP, subframeP, sched_subframe,first_rb);
Xu Bo's avatar
Xu Bo committed
1087 1088 1089 1090 1091 1092 1093
#else
  ULSCH_UE_SELECT ulsch_ue_select[MAX_NUM_CCs];
  memset(ulsch_ue_select, 0, sizeof(ulsch_ue_select));

  LTE_DL_FRAME_PARMS *frame_parms ;

  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
Xu Bo's avatar
Xu Bo committed
1094
    cc = &mac->common_channels[CC_id];
Xu Bo's avatar
Xu Bo committed
1095 1096 1097 1098 1099 1100
    frame_parms= &RC.eNB[module_idP][CC_id]->frame_parms;
    // 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?)
    for (i=0; i<NB_RA_PROC_MAX; i++) {
Xu Bo's avatar
Xu Bo committed
1101
      if ((cc->ra[i].state == WAITMSG3) &&(cc->ra[i].Msg3_subframe == sched_subframe)) {  
Xu Bo's avatar
Xu Bo committed
1102
        ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].ue_priority = SCH_UL_MSG3;
1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121
        if (cc->tdd_Config == NULL) {
            if(frame_parms->N_RB_UL == 25){
              ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].start_rb = 1;
            }else{
              ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].start_rb = 2;
            }
        } else {
            switch(frame_parms->N_RB_UL){
            case 25:
            default:
              ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].start_rb = 1;
              break;
            case 50:
              ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].start_rb = 2;
              break;
            case 100:
              ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].start_rb = 3;
              break;
            }
1122
        }
Xu Bo's avatar
Xu Bo committed
1123 1124 1125 1126 1127 1128
        ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].nb_rb = 1;
        ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].UE_id = -1;
        ulsch_ue_select[CC_id].ue_num++;
        break;
      }
    }
gauthier's avatar
 
gauthier committed
1129

Xu Bo's avatar
Xu Bo committed
1130
    //PRACH
Xu Bo's avatar
Xu Bo committed
1131
    if (is_prach_subframe(frame_parms,sched_frame,sched_subframe)==1) {
Xu Bo's avatar
Xu Bo committed
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146
      ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].ue_priority = SCH_UL_PRACH;
      ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].start_rb = get_prach_prb_offset(
    		                                                                 frame_parms,
    		                                                                 frame_parms->prach_config_common.prach_ConfigInfo.prach_ConfigIndex,
    		                                                                 frame_parms->prach_config_common.prach_ConfigInfo.prach_FreqOffset,
    		                                                                 0,//tdd_mapindex
    		                                                                 frameP); //Nf
      ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].nb_rb = 6;
      ulsch_ue_select[CC_id].list[ulsch_ue_select[CC_id].ue_num].UE_id = -1;
      ulsch_ue_select[CC_id].ue_num++;
    }
  }

  schedule_ulsch_rnti(module_idP, frameP, subframeP, sched_subframe,ulsch_ue_select);
#endif
Xu Bo's avatar
Xu Bo committed
1147
  stop_meas(&mac->schedule_ulsch);
1148
}
Xu Bo's avatar
Xu Bo committed
1149
#ifndef UE_EXPANSION
1150 1151 1152 1153 1154
void
schedule_ulsch_rnti(module_id_t module_idP,
		    frame_t frameP,
		    sub_frame_t subframeP,
		    unsigned char sched_subframeP, uint16_t * first_rb)
1155
{
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181
    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)
	sched_frame++;

jftt_wangshanshan's avatar
jftt_wangshanshan committed
1182
    nfapi_hi_dci0_request_t        *hi_dci0_req = &mac->HI_DCI0_req[CC_id][subframeP];
1183 1184
    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;
1185

1186 1187
    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;
1188

1189
    //LOG_D(MAC, "entering ulsch preprocesor\n");
Xu Bo's avatar
Xu Bo committed
1190
    ulsch_scheduler_pre_processor(module_idP, frameP, subframeP,sched_subframeP, first_rb);
1191

1192
    //LOG_D(MAC, "exiting ulsch preprocesor\n");
1193

1194
    hi_dci0_req->sfn_sf = (frameP << 4) + subframeP;
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

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

	// don't schedule if Msg4 is not received yet
	if (UE_list->UE_template[UE_PCCID(module_idP, UE_id)][UE_id].
	    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;
	}

	rnti = UE_RNTI(module_idP, UE_id);

	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;
	}

	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) {
1231
/* we can't come here, ulsch_scheduler_pre_processor won't put in the list a UE with no PHY context */
1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247
	    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);
1248 1249 1250 1251
                if (UE_list->UE_sched_ctrl[UE_id].ul_failure_timer > 0) {
                  LOG_I(MAC, "UE %d rnti %x: UL Failure timer %d clear to 0\n", UE_id, rnti,
                  UE_list->UE_sched_ctrl[UE_id].ul_failure_timer);
                }
1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 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 1319 1320 1321 1322
		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,Checking PUSCH %d for UE %d/%x CC %d : aggregation level %d, N_RB_UL %d\n",
		  module_idP, frameP, subframeP, harq_pid, UE_id, rnti,
		  CC_id, aggregation, N_RB_UL);

	    RC.eNB[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP *
							      10) +
							     subframeP] =
		UE_template->ul_total_buffer;
	    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) {
1323 1324 1325 1326 1327
                    if (nfapi_mode) {
                      cqi_req = 0;
                    } else {
                      cqi_req = 1;
                    }
1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 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 1441 1442 1443 1444 1445 1446 1447 1448 1449