ue_procedures.c 124 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 24 25 26 27 28 29
/*! \file asn1_msg.c
 * \brief primitives to build the asn1 messages / primitives to build FeMBMS asn1  messages
 * \author Raymond Knopp, Navid Nikaein and Javier Morgade
 * \date 2011 / 2019
 * \version 1.0
 * \company Eurecom
 * \email: raymond.knopp@eurecom.fr, navid.nikaein@eurecom.fr javier.morgade@ieee.org
30
 */
31

32 33 34 35
#ifdef EXMIMO
#include <pthread.h>
#endif

36 37 38 39
#include "mac_extern.h"
#include "mac.h"
#include "mac_proto.h"
#include "SCHED_UE/sched_UE.h"
40
#include "PHY/impl_defs_top.h"
41
#include "PHY_INTERFACE/phy_interface_extern.h"
42
#include "COMMON/mac_rrc_primitives.h"
43 44
#include "PHY/INIT/phy_init.h"
#include "PHY/LTE_ESTIMATION/lte_estimation.h"
Cedric Roux's avatar
Cedric Roux committed
45 46

#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
47
#include "RRC/LTE/rrc_extern.h"
48 49
#include "common/utils/LOG/log.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
Cedric Roux's avatar
Cedric Roux committed
50
#include "UTIL/OPT/opt.h"
51 52
#include "OCG.h"
#include "OCG_extern.h"
53
#include "openair2/PHY_INTERFACE/phy_stub_UE.h"
Cedric Roux's avatar
Cedric Roux committed
54

55
#include "pdcp.h"
56

57
#if defined(ENABLE_ITTI)
58
#include "intertask_interface.h"
59 60
#endif

61 62
#include "assertions.h"

63
#include "SIMULATION/TOOLS/sim.h"	// for taus
64

65
#define DEBUG_HEADER_PARSING 1
66
#define ENABLE_MAC_PAYLOAD_DEBUG 1
67

fnabet's avatar
fnabet committed
68

69 70 71
extern UL_IND_t *UL_INFO;

extern uint8_t  nfapi_mode;
72 73
extern int next_ra_frame;
extern module_id_t next_Mod_id;
74

75
/*
76
 *
77 78 79
#ifndef USER_MODE
#define msg debug_msg
#endif
80
 */
81

82
mapping BSR_names[] = {
83 84 85 86 87 88
    {"NONE", 0},
    {"SHORT BSR", 1},
    {"TRUNCATED BSR", 2},
    {"LONG BSR", 3},
    {"PADDING BSR", 4},
    {NULL, -1}
89 90 91
};


92 93
void ue_init_mac(module_id_t module_idP)
{
94

95 96 97 98 99
    int i;
    // default values as deined in 36.331 sec 9.2.2
    LOG_I(MAC, "[UE%d] Applying default macMainConfig\n", module_idP);
    //UE_mac_inst[module_idP].scheduling_info.macConfig=NULL;
    UE_mac_inst[module_idP].scheduling_info.retxBSR_Timer =
100
	LTE_RetxBSR_Timer_r12_sf10240;
101
    UE_mac_inst[module_idP].scheduling_info.periodicBSR_Timer =
102
	LTE_PeriodicBSR_Timer_r12_infinity;
103
    UE_mac_inst[module_idP].scheduling_info.periodicPHR_Timer =
104
	LTE_MAC_MainConfig__phr_Config__setup__periodicPHR_Timer_sf20;
105
    UE_mac_inst[module_idP].scheduling_info.prohibitPHR_Timer =
106
	LTE_MAC_MainConfig__phr_Config__setup__prohibitPHR_Timer_sf20;
107
    UE_mac_inst[module_idP].scheduling_info.PathlossChange_db =
108
	LTE_MAC_MainConfig__phr_Config__setup__dl_PathlossChange_dB1;
109
    UE_mac_inst[module_idP].PHR_state =
110
	LTE_MAC_MainConfig__phr_Config_PR_setup;
111 112 113 114
    UE_mac_inst[module_idP].scheduling_info.SR_COUNTER = 0;
    UE_mac_inst[module_idP].scheduling_info.sr_ProhibitTimer = 0;
    UE_mac_inst[module_idP].scheduling_info.sr_ProhibitTimer_Running = 0;
    UE_mac_inst[module_idP].scheduling_info.maxHARQ_Tx =
115
	LTE_MAC_MainConfig__ul_SCH_Config__maxHARQ_Tx_n5;
116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
    UE_mac_inst[module_idP].scheduling_info.ttiBundling = 0;
    UE_mac_inst[module_idP].scheduling_info.extendedBSR_Sizes_r10 = 0;
    UE_mac_inst[module_idP].scheduling_info.extendedPHR_r10 = 0;
    UE_mac_inst[module_idP].scheduling_info.drx_config = NULL;
    UE_mac_inst[module_idP].scheduling_info.phr_config = NULL;
    // set init value 0xFFFF, make sure periodic timer and retx time counters are NOT active, after bsr transmission set the value configured by the NW.
    UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF =
	MAC_UE_BSR_TIMER_NOT_RUNNING;
    UE_mac_inst[module_idP].scheduling_info.retxBSR_SF =
	MAC_UE_BSR_TIMER_NOT_RUNNING;
    UE_mac_inst[module_idP].BSR_reporting_active = BSR_TRIGGER_NONE;

    UE_mac_inst[module_idP].scheduling_info.periodicPHR_SF =
	get_sf_perioidicPHR_Timer(UE_mac_inst[module_idP].
				  scheduling_info.periodicPHR_Timer);
    UE_mac_inst[module_idP].scheduling_info.prohibitPHR_SF =
	get_sf_prohibitPHR_Timer(UE_mac_inst[module_idP].
				 scheduling_info.prohibitPHR_Timer);
    UE_mac_inst[module_idP].scheduling_info.PathlossChange_db =
	get_db_dl_PathlossChange(UE_mac_inst[module_idP].
				 scheduling_info.PathlossChange);
    UE_mac_inst[module_idP].PHR_reporting_active = 0;

    for (i = 0; i < MAX_NUM_LCID; i++) {
	LOG_D(MAC,
	      "[UE%d] Applying default logical channel config for LCGID %d\n",
	      module_idP, i);
	UE_mac_inst[module_idP].scheduling_info.Bj[i] = -1;
	UE_mac_inst[module_idP].scheduling_info.bucket_size[i] = -1;

	if (i < DTCH) {		// initilize all control channels lcgid to 0
	    UE_mac_inst[module_idP].scheduling_info.LCGID[i] = 0;
	} else {		// initialize all the data channels lcgid to 1
	    UE_mac_inst[module_idP].scheduling_info.LCGID[i] = 1;
	}

	UE_mac_inst[module_idP].scheduling_info.LCID_status[i] =
	    LCID_EMPTY;
	UE_mac_inst[module_idP].scheduling_info.LCID_buffer_remain[i] = 0;
    }
156

157 158 159 160 161 162 163 164 165 166 167
  if(nfapi_mode == 3) {
	  pthread_mutex_init(&UE_mac_inst[module_idP].UL_INFO_mutex,NULL);
	  UE_mac_inst[module_idP].UE_mode[0] = NOT_SYNCHED; //PRACH;
	  UE_mac_inst[module_idP].first_ULSCH_Tx =0;
	  UE_mac_inst[module_idP].SI_Decoded = 0;
	  next_ra_frame = 0;
	  next_Mod_id = 0;
	  tx_request_pdu_list = NULL;
	  tx_req_num_elems = 0;


168
  }
169

170
#ifdef CBA
171

172 173 174 175
    for (i = 0; i < NUM_MAX_CBA_GROUP; i++) {
	UE_mac_inst[module_idP].cba_last_access[i] =
	    round(uniform_rngen(1, 30));
    }
176 177

#endif
178 179
}

Raymond Knopp's avatar
 
Raymond Knopp committed
180

181
unsigned char *parse_header(unsigned char *mac_header,
182 183 184 185 186 187
			    unsigned char *num_ce,
			    unsigned char *num_sdu,
			    unsigned char *rx_ces,
			    unsigned char *rx_lcids,
			    unsigned short *rx_lengths,
			    unsigned short tb_length)
188
{
189

190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222
    unsigned char not_done = 1, num_ces = 0, num_cont_res =
	0, num_padding = 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) {
	    //      printf("E=0\n");
	    not_done = 0;
	}

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

	if (lcid < UE_CONT_RES) {
	    //printf("[MAC][UE] header %x.%x.%x\n",mac_header_ptr[0],mac_header_ptr[1],mac_header_ptr[2]);
	    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_LONG *) mac_header_ptr)->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;
223
#ifdef DEBUG_HEADER_PARSING
224
		    LOG_D(MAC, "[UE] parse long sdu, size %x \n", length);
225
#endif
226

227 228 229 230 231
		} else {	//if (((SCH_SUBHEADER_SHORT *)mac_header_ptr)->F == 0) {
		    length = ((SCH_SUBHEADER_SHORT *) mac_header_ptr)->L;
		    mac_header_ptr += 2;
		}
	    }
232

233
#ifdef DEBUG_HEADER_PARSING
234 235
	    LOG_D(MAC, "[UE] sdu %d lcid %d length %d (offset now %ld)\n",
		  num_sdus, lcid, length, mac_header_ptr - mac_header);
236
#endif
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
	    rx_lcids[num_sdus] = lcid;
	    rx_lengths[num_sdus] = length;
	    num_sdus++;
	} else {		// This is a control element subheader
	    if (lcid == SHORT_PADDING) {
		num_padding++;
		mac_header_ptr++;
	    } else {
		rx_ces[num_ces] = lcid;
		num_ces++;
		mac_header_ptr++;

		if (lcid == TIMING_ADV_CMD) {
		    ce_len++;
		} else if (lcid == UE_CONT_RES) {

		    // FNA: check MAC Header is one of thoses defined in Annex B of 36.321
		    // Check there is only 1 Contention Resolution
		    if (num_cont_res) {
			LOG_W(MAC,
			      "[UE] Msg4 Wrong received format: More than 1 Contention Resolution\n");
			// exit parsing
			return NULL;

		    }
		    // UE_CONT_RES shall never be the last subheader unless this is the only MAC subheader
		    if ((not_done == 0)
			&& ((num_sdus) || (num_ces > 1) || (num_padding))) {
			LOG_W(MAC,
			      "[UE] Msg4 Wrong received format: Contention Resolution after num_ces=%d num_sdus=%d num_padding=%d\n",
			      num_ces, num_sdus, num_padding);
			// exit parsing
			return NULL;
		    }
		    num_cont_res++;
		    ce_len += 6;
		}
	    }
275

276
#ifdef DEBUG_HEADER_PARSING
277 278
	    LOG_D(MAC, "[UE] ce %d lcid %d (offset now %ld)\n", num_ces,
		  lcid, mac_header_ptr - mac_header);
279
#endif
280
	}
281 282
    }

283 284
    *num_ce = num_ces;
    *num_sdu = num_sdus;
285

286
    return (mac_header_ptr);
287 288
}

289 290 291
uint32_t
ue_get_SR(module_id_t module_idP, int CC_id, frame_t frameP,
	  uint8_t eNB_id, uint16_t rnti, sub_frame_t subframe)
292
{
293

294 295 296 297 298 299 300 301 302 303 304 305 306 307
    // no UL-SCH resources available for this tti && UE has a valid PUCCH resources for SR configuration for this tti
    //  int MGL=6;// measurement gap length in ms
    int MGRP = 0;		// measurement gap repetition period in ms
    int gapOffset = -1;
    int T = 0;

    DevCheck(module_idP < (int) NB_UE_INST, module_idP, NB_UE_INST, 0);

    AssertFatal(CC_id == 0,
		"Transmission on secondary CCs is not supported yet\n");

    // determin the measurement gap
    if (UE_mac_inst[module_idP].measGapConfig != NULL) {
	if (UE_mac_inst[module_idP].measGapConfig->choice.setup.
308
	    gapOffset.present == LTE_MeasGapConfig__setup__gapOffset_PR_gp0) {
309 310 311 312 313 314
	    MGRP = 40;
	    gapOffset =
		UE_mac_inst[module_idP].measGapConfig->choice.
		setup.gapOffset.choice.gp0;
	} else if (UE_mac_inst[module_idP].measGapConfig->choice.
		   setup.gapOffset.present ==
315
		   LTE_MeasGapConfig__setup__gapOffset_PR_gp1) {
316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334
	    MGRP = 80;
	    gapOffset =
		UE_mac_inst[module_idP].measGapConfig->choice.
		setup.gapOffset.choice.gp1;
	} else {
	    LOG_W(MAC, "Measurement GAP offset is unknown\n");
	}

	T = MGRP / 10;
	DevAssert(T != 0);

	//check the measurement gap and sr prohibit timer
	if ((subframe == gapOffset % 10)
	    && ((frameP % T) == (floor(gapOffset / 10)))
	    && (UE_mac_inst[module_idP].
		scheduling_info.sr_ProhibitTimer_Running == 0)) {
	    UE_mac_inst[module_idP].scheduling_info.SR_pending = 1;
	    return (0);
	}
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
    if ((UE_mac_inst[module_idP].physicalConfigDedicated != NULL) &&
	(UE_mac_inst[module_idP].scheduling_info.SR_pending == 1) &&
	(UE_mac_inst[module_idP].scheduling_info.SR_COUNTER <
	 (1 <<
	  (2 +
	   UE_mac_inst[module_idP].
	   physicalConfigDedicated->schedulingRequestConfig->choice.setup.
	   dsr_TransMax)))) {
	LOG_D(MAC,
	      "[UE %d][SR %x] Frame %d subframe %d PHY asks for SR (SR_COUNTER/dsr_TransMax %d/%d), SR_pending %d\n",
	      module_idP, rnti, frameP, subframe,
	      UE_mac_inst[module_idP].scheduling_info.SR_COUNTER,
	      (1 <<
	       (2 +
		UE_mac_inst[module_idP].
		physicalConfigDedicated->schedulingRequestConfig->choice.
		setup.dsr_TransMax)),
	      UE_mac_inst[module_idP].scheduling_info.SR_pending);

	UE_mac_inst[module_idP].scheduling_info.SR_COUNTER++;

	// start the sr-prohibittimer : rel 9 and above
	if (UE_mac_inst[module_idP].scheduling_info.sr_ProhibitTimer > 0) {	// timer configured
	    UE_mac_inst[module_idP].scheduling_info.sr_ProhibitTimer--;
	    UE_mac_inst[module_idP].scheduling_info.
		sr_ProhibitTimer_Running = 1;
	} else {
	    UE_mac_inst[module_idP].scheduling_info.
		sr_ProhibitTimer_Running = 0;
	}

	LOG_D(MAC,
	      "[UE %d][SR %x] Frame %d subframe %d send SR indication (SR_COUNTER/dsr_TransMax %d/%d), SR_pending %d\n",
	      module_idP, rnti, frameP, subframe,
	      UE_mac_inst[module_idP].scheduling_info.SR_COUNTER,
	      (1 <<
	       (2 +
		UE_mac_inst[module_idP].
		physicalConfigDedicated->schedulingRequestConfig->choice.
		setup.dsr_TransMax)),
	      UE_mac_inst[module_idP].scheduling_info.SR_pending);

	//UE_mac_inst[module_idP].ul_active =1;
	return (1);		//instruct phy to signal SR
381
    } else {
382 383 384 385 386 387 388 389 390 391 392 393 394 395 396
	// notify RRC to relase PUCCH/SRS
	// clear any configured dl/ul
	// initiate RA
	if (UE_mac_inst[module_idP].scheduling_info.SR_pending) {
	    // release all pucch resource
	    UE_mac_inst[module_idP].physicalConfigDedicated = NULL;
	    UE_mac_inst[module_idP].ul_active = 0;
	    UE_mac_inst[module_idP].BSR_reporting_active =
		BSR_TRIGGER_NONE;

	    LOG_I(MAC, "[UE %d] Release all SRs \n", module_idP);
	}
	UE_mac_inst[module_idP].scheduling_info.SR_pending = 0;
	UE_mac_inst[module_idP].scheduling_info.SR_COUNTER = 0;
	return (0);
397
    }
398 399
}

400 401
//------------------------------------------------------------------------------
void
402
ue_send_sdu(module_id_t module_idP,
403 404
	    uint8_t CC_id,
	    frame_t frameP,
405 406
	    sub_frame_t subframeP,
	    uint8_t * sdu, uint16_t sdu_len, uint8_t eNB_index)
fnabet's avatar
fnabet committed
407 408
//------------------------------------------------------------------------------
{
409

410 411 412 413
    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];
    unsigned char *tx_sdu;
gabrielC's avatar
gabrielC committed
414
#if UE_TIMING_TRACE
415
    start_meas(&UE_mac_inst[module_idP].rx_dlsch_sdu);
gabrielC's avatar
gabrielC committed
416
#endif
417 418
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SEND_SDU, VCD_FUNCTION_IN);
419 420


421
  //LOG_D(MAC,"sdu: %x.%x.%x\n",sdu[0],sdu[1],sdu[2]);
422

423
    if (opt_enabled) {
laurent's avatar
laurent committed
424
	trace_pdu(DIRECTION_DOWNLINK, sdu, sdu_len, module_idP, WS_C_RNTI,
425 426 427 428 429
		  UE_mac_inst[module_idP].crnti, frameP, subframeP, 0, 0);
	LOG_D(OPT,
	      "[UE %d][DLSCH] Frame %d trace pdu for rnti %x  with size %d\n",
	      module_idP, frameP, UE_mac_inst[module_idP].crnti, sdu_len);
    }
430

431 432 433
    payload_ptr =
	parse_header(sdu, &num_ce, &num_sdu, rx_ces, rx_lcids, rx_lengths,
		     sdu_len);
434 435

#ifdef DEBUG_HEADER_PARSING
436 437 438
    LOG_D(MAC,
	  "[UE %d] ue_send_sdu : Frame %d eNB_index %d : num_ce %d num_sdu %d\n",
	  module_idP, frameP, eNB_index, num_ce, num_sdu);
439 440 441
#endif

#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
442
    LOG_T(MAC, "[UE %d] First 32 bytes of DLSCH : \n", module_idP);
443

444 445 446
    for (i = 0; i < 32; i++) {
	LOG_T(MAC, "%x.", sdu[i]);
    }
447

448
    LOG_T(MAC, "\n");
449 450
#endif

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
    if (payload_ptr != NULL) {

	for (i = 0; i < num_ce; i++) {
	    //    printf("ce %d : %d\n",i,rx_ces[i]);
	    switch (rx_ces[i]) {
	    case UE_CONT_RES:

		LOG_I(MAC,
		      "[UE %d][RAPROC] Frame %d : received contention resolution msg: %x.%x.%x.%x.%x.%x, Terminating RA procedure\n",
		      module_idP, frameP, payload_ptr[0], payload_ptr[1],
		      payload_ptr[2], payload_ptr[3], payload_ptr[4],
		      payload_ptr[5]);

		if (UE_mac_inst[module_idP].RA_active == 1) {
		    LOG_I(MAC,
			  "[UE %d][RAPROC] Frame %d : Clearing RA_active flag\n",
			  module_idP, frameP);
		    UE_mac_inst[module_idP].RA_active = 0;
		    // check if RA procedure has finished completely (no contention)
		    tx_sdu = &UE_mac_inst[module_idP].CCCH_pdu.payload[3];

		    //Note: 3 assumes sizeof(SCH_SUBHEADER_SHORT) + PADDING CE, which is when UL-Grant has TBS >= 9 (64 bits)
		    // (other possibility is 1 for TBS=7 (SCH_SUBHEADER_FIXED), or 2 for TBS=8 (SCH_SUBHEADER_FIXED+PADDING or SCH_SUBHEADER_SHORT)
		    for (i = 0; i < 6; i++)
			if (tx_sdu[i] != payload_ptr[i]) {
			    LOG_E(MAC,
				  "[UE %d][RAPROC] Contention detected, RA failed\n",
				  module_idP);
479 480
			    if(nfapi_mode == 3) { // phy_stub mode
			    	//  Modification for phy_stub mode operation here. We only need to make sure that the ue_mode is back to
481 482 483 484 485 486 487 488
			    	// PRACH state.
			    	LOG_I(MAC, "nfapi_mode3: Setting UE_mode BACK to PRACH 1\n");
			    	UE_mac_inst[module_idP].UE_mode[eNB_index] = PRACH;
			    	//ra_failed(module_idP,CC_id,eNB_index);UE_mac_inst[module_idP].RA_contention_resolution_timer_active = 0;
			    	}
			    else{
			    	ra_failed(module_idP, CC_id, eNB_index);
			    }
489 490 491 492 493 494 495 496 497 498 499 500 501 502 503
			    UE_mac_inst
				[module_idP].
				RA_contention_resolution_timer_active = 0;
			    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
				(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SEND_SDU,
				 VCD_FUNCTION_OUT);
			    return;
			}

		    LOG_I(MAC,
			  "[UE %d][RAPROC] Frame %d : Clearing contention resolution timer\n",
			  module_idP, frameP);
		    UE_mac_inst
			[module_idP].
			RA_contention_resolution_timer_active = 0;
504 505
		    if(nfapi_mode == 3) // phy_stub mode
		    	{
506
		    	// Modification for phy_stub mode operation here. We only need to change the ue_mode to PUSCH
507 508 509 510 511
		    	UE_mac_inst[module_idP].UE_mode[eNB_index] = PUSCH;
		    	}
		    else { // Full stack mode
		    	ra_succeeded(module_idP,CC_id,eNB_index);
		    }
512
		}
513

514 515
		payload_ptr += 6;
		break;
516

517
	    case TIMING_ADV_CMD:
518
#ifdef DEBUG_HEADER_PARSING
519 520
		LOG_D(MAC, "[UE] CE %d : UE Timing Advance : %d\n", i,
		      payload_ptr[0]);
521
#endif
522

523
	  // Eliminate call to process_timing_advance for the phy_stub UE operation mode. Is this correct?
524 525 526 527
      if (nfapi_mode!=3)
      {
    	  process_timing_advance(module_idP,CC_id,payload_ptr[0]);
      }
528 529 530
      payload_ptr++;
      break;

531
	    case DRX_CMD:
532
#ifdef DEBUG_HEADER_PARSING
533
		LOG_D(MAC, "[UE] CE %d : UE DRX :", i);
534
#endif
535 536 537 538
		payload_ptr++;
		break;
	    }
	}
539

540
	for (i = 0; i < num_sdu; i++) {
541
#ifdef DEBUG_HEADER_PARSING
542 543
	    LOG_D(MAC, "[UE] SDU %d : LCID %d, length %d\n", i,
		  rx_lcids[i], rx_lengths[i]);
544
#endif
545
	    if (rx_lcids[i] == CCCH) {
546

547 548 549 550
		LOG_D(MAC,
		      "[UE %d] rnti %x Frame %d : DLSCH -> DL-CCCH, RRC message (eNB %d, %d bytes)\n",
		      module_idP, UE_mac_inst[module_idP].crnti, frameP,
		      eNB_index, rx_lengths[i]);
551 552

#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
553
		int j;
554

555 556 557
		for (j = 0; j < rx_lengths[i]; j++) {
		    LOG_T(MAC, "%x.", (uint8_t) payload_ptr[j]);
		}
558

559
		LOG_T(MAC, "\n");
560
#endif
561

562 563 564 565 566 567 568 569 570 571
      mac_rrc_data_ind_ue(module_idP,
			  CC_id,
			  frameP,subframeP,
			  UE_mac_inst[module_idP].crnti,
			  CCCH,
			  (uint8_t*)payload_ptr,
			  rx_lengths[i],
			  eNB_index,
			  0
			  );
572

573
    } else if ((rx_lcids[i] == DCCH) || (rx_lcids[i] == DCCH1)) {
574
      LOG_D(MAC,"[UE %d] Frame %d : DLSCH -> DL-DCCH%d, RRC message (eNB %d, %d bytes)\n", module_idP, frameP, rx_lcids[i],eNB_index,rx_lengths[i]);
575 576
      mac_rlc_data_ind(module_idP,
                       UE_mac_inst[module_idP].crnti,
577
		       eNB_index,
578 579 580
                       frameP,
                       ENB_FLAG_NO,
                       MBMS_FLAG_NO,
581
                       rx_lcids[i],
582 583 584 585
                       (char *)payload_ptr,
                       rx_lengths[i],
                       1,
                       NULL);
586 587 588
 
    } else if ((rx_lcids[i]  < NB_RB_MAX) && (rx_lcids[i] > DCCH1 )) {
      
589
      LOG_D(MAC,"[UE %d] Frame %d : DLSCH -> DL-DTCH%d (eNB %d, %d bytes)\n", module_idP, frameP,rx_lcids[i], eNB_index,rx_lengths[i]);
590 591

#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
592 593 594 595
		int j;
		for (j = 0; j < rx_lengths[i]; j++)
		    LOG_T(MAC, "%x.", (unsigned char) payload_ptr[j]);
		LOG_T(MAC, "\n");
596
#endif
597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615
		mac_rlc_data_ind(module_idP,
				 UE_mac_inst[module_idP].crnti,
				 eNB_index,
				 frameP,
				 ENB_FLAG_NO,
				 MBMS_FLAG_NO,
				 rx_lcids[i],
				 (char *) payload_ptr, rx_lengths[i], 1,
				 NULL);
	    } else {
		LOG_E(MAC, "[UE %d] Frame %d : unknown LCID %d (eNB %d)\n",
		      module_idP, frameP, rx_lcids[i], eNB_index);
	    }
	    payload_ptr += rx_lengths[i];
	}
    }				// end if (payload_ptr != NULL)

    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SEND_SDU, VCD_FUNCTION_OUT);
gabrielC's avatar
gabrielC committed
616
#if UE_TIMING_TRACE
617
    stop_meas(&UE_mac_inst[module_idP].rx_dlsch_sdu);
gabrielC's avatar
gabrielC committed
618
#endif
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
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
void
ue_decode_si_mbms(module_id_t module_idP, int CC_id, frame_t frameP,
            uint8_t eNB_index, void *pdu, uint16_t len)
{
#if UE_TIMING_TRACE
    start_meas(&UE_mac_inst[module_idP].rx_si);
#endif
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
       (VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_SI, VCD_FUNCTION_IN);

    LOG_D(MAC, "[UE %d] Frame %d Sending SI MBMS to RRC (LCID Id %d,len %d)\n",
         module_idP, frameP, BCCH, len);

    mac_rrc_data_ind_ue(module_idP, CC_id, frameP, 0,  // unknown subframe
                    SI_RNTI,
                    BCCH_SI_MBMS, (uint8_t *) pdu, len, eNB_index,
                    0);
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
       (VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_SI, VCD_FUNCTION_OUT);
#if UE_TIMING_TRACE
    stop_meas(&UE_mac_inst[module_idP].rx_si);
#endif
    if (opt_enabled == 1) {
       trace_pdu(DIRECTION_UPLINK,
                 (uint8_t *) pdu,
                 len,
                 module_idP,
                 WS_SI_RNTI,
                 0xffff,
                 UE_mac_inst[module_idP].rxFrame,
                 UE_mac_inst[module_idP].rxSubframe, 0, 0);
       LOG_D(OPT,
             "[UE %d][BCH] Frame %d trace pdu for CC_id %d rnti %x with size %d\n",
             module_idP, frameP, CC_id, 0xffff, len);
    }
}
#endif

660 661 662
void
ue_decode_si(module_id_t module_idP, int CC_id, frame_t frameP,
	     uint8_t eNB_index, void *pdu, uint16_t len)
663
{
gabrielC's avatar
gabrielC committed
664 665 666
#if UE_TIMING_TRACE
    start_meas(&UE_mac_inst[module_idP].rx_si);
#endif
667

668 669 670 671 672 673
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_SI, VCD_FUNCTION_IN);

    LOG_D(MAC, "[UE %d] Frame %d Sending SI to RRC (LCID Id %d,len %d)\n",
	  module_idP, frameP, BCCH, len);

674
    mac_rrc_data_ind_ue(module_idP, CC_id, frameP, 0,	// unknown subframe
675
		     SI_RNTI,
676
		     BCCH, (uint8_t *) pdu, len, eNB_index,
677 678 679
		     0);
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_SI, VCD_FUNCTION_OUT);
680

gabrielC's avatar
gabrielC committed
681
#if UE_TIMING_TRACE
682
    stop_meas(&UE_mac_inst[module_idP].rx_si);
gabrielC's avatar
gabrielC committed
683
#endif
684
    if (opt_enabled == 1) {
laurent's avatar
laurent committed
685
	trace_pdu(DIRECTION_UPLINK,
686 687 688
		  (uint8_t *) pdu,
		  len,
		  module_idP,
laurent's avatar
laurent committed
689
		  WS_SI_RNTI,
690 691 692 693 694 695 696
		  0xffff,
		  UE_mac_inst[module_idP].rxFrame,
		  UE_mac_inst[module_idP].rxSubframe, 0, 0);
	LOG_D(OPT,
	      "[UE %d][BCH] Frame %d trace pdu for CC_id %d rnti %x with size %d\n",
	      module_idP, frameP, CC_id, 0xffff, len);
    }
697 698
}

699 700 701
void
ue_decode_p(module_id_t module_idP, int CC_id, frame_t frameP,
	    uint8_t eNB_index, void *pdu, uint16_t len)
702
{
gabrielC's avatar
gabrielC committed
703 704 705
#if UE_TIMING_TRACE
    start_meas(&UE_mac_inst[module_idP].rx_p);
#endif
706

707 708 709 710 711 712 713
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_PCCH, VCD_FUNCTION_IN);

    LOG_D(MAC,
	  "[UE %d] Frame %d Sending Paging message to RRC (LCID Id %d,len %d)\n",
	  module_idP, frameP, PCCH, len);

714
    mac_rrc_data_ind_ue(module_idP, CC_id, frameP, 0,	// unknown subframe
715
		     P_RNTI,
716
		     PCCH, (uint8_t *) pdu, len, eNB_index,
717 718 719
		     0);
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_PCCH, VCD_FUNCTION_OUT);
720

gabrielC's avatar
gabrielC committed
721
#if UE_TIMING_TRACE
722
    stop_meas(&UE_mac_inst[module_idP].rx_p);
gabrielC's avatar
gabrielC committed
723
#endif
724
    if (opt_enabled == 1) {
laurent's avatar
laurent committed
725
	trace_pdu(DIRECTION_UPLINK ,
726 727 728
		  (uint8_t *) pdu,
		  len,
		  module_idP,
laurent's avatar
laurent committed
729
		  WS_SI_RNTI,
730 731 732 733 734 735 736
		  P_RNTI,
		  UE_mac_inst[module_idP].rxFrame,
		  UE_mac_inst[module_idP].rxSubframe, 0, 0);
	LOG_D(OPT,
	      "[UE %d][BCH] Frame %d trace pdu for CC_id %d rnti %x with size %d\n",
	      module_idP, frameP, CC_id, P_RNTI, len);
    }
737 738
}

739
#if (LTE_RRC_VERSION >= MAKE_VERSION(10, 0, 0))
740
unsigned char *parse_mch_header(unsigned char *mac_header,
741 742 743 744
				unsigned char *num_sdu,
				unsigned char *rx_lcids,
				unsigned short *rx_lengths,
				unsigned short tb_length)
745
{
746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786
    unsigned char not_done = 1, num_sdus = 0, lcid, i;
    unsigned char *mac_header_ptr = mac_header;
    unsigned short length;

    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 < SHORT_PADDING) {	// subheader for MSI, MCCH or MTCH
	    if (not_done == 0) {	// last MAC SDU, length is implicit
		mac_header_ptr++;
		length = tb_length - (mac_header_ptr - mac_header);

		for (i = 0; i < num_sdus; i++) {
		    length -= rx_lengths[i];
		}
	    } else {		// not the last MAC SDU
		if (((SCH_SUBHEADER_LONG *) mac_header_ptr)->F == 1) {	// subheader has length of 3octets
		    //    length = ((SCH_SUBHEADER_LONG *)mac_header_ptr)->L;
		    length =
			((((SCH_SUBHEADER_LONG *) mac_header_ptr)->
			  L_MSB & 0x7f)
			 << 8) | (((SCH_SUBHEADER_LONG *) mac_header_ptr)->
				  L_LSB & 0xff);
		    mac_header_ptr += 3;
		} else {	// subheader has length of 2octets
		    length = ((SCH_SUBHEADER_SHORT *) mac_header_ptr)->L;
		    mac_header_ptr += 2;
		}
	    }

	    rx_lcids[num_sdus] = lcid;
	    rx_lengths[num_sdus] = length;
	    num_sdus++;
	} else {		// subheader for padding
	    //     if (lcid == SHORT_PADDING)
	    mac_header_ptr++;
	}
787 788
    }

789 790
    *num_sdu = num_sdus;
    return (mac_header_ptr);
791 792 793
}

// this function is for sending mch_sdu from phy to mac
794 795 796 797
void
ue_send_mch_sdu(module_id_t module_idP, uint8_t CC_id, frame_t frameP,
		uint8_t * sdu, uint16_t sdu_len, uint8_t eNB_index,
		uint8_t sync_area)
798
{
799

800
    unsigned char num_sdu, i, j, *payload_ptr;
801 802
    unsigned char rx_lcids[NB_RB_MAX];
    unsigned short rx_lengths[NB_RB_MAX];
gabrielC's avatar
gabrielC committed
803
#if UE_TIMING_TRACE
804
    start_meas(&UE_mac_inst[module_idP].rx_mch_sdu);
gabrielC's avatar
gabrielC committed
805
#endif
806 807
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SEND_MCH_SDU, VCD_FUNCTION_IN);
808

809 810 811 812 813 814 815 816 817 818 819 820
    LOG_D(MAC,
	  "[UE %d] Frame %d : process the mch PDU for sync area %d \n",
	  module_idP, frameP, sync_area);
    LOG_D(MAC, "[UE %d] sdu: %x.%x\n", module_idP, sdu[0], sdu[1]);
    LOG_D(MAC, "[UE %d] parse_mch_header, demultiplex\n", module_idP);

    payload_ptr =
	parse_mch_header(sdu, &num_sdu, rx_lcids, rx_lengths, sdu_len);
    LOG_D(MAC, "[UE %d] parse_mch_header, found %d sdus\n", module_idP,
	  num_sdu);

    for (i = 0; i < num_sdu; i++) {
821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837
      if (rx_lcids[i] == MCH_SCHDL_INFO) {
        if (rx_lengths[i] & 0x01) {
          LOG_E(MAC,"MCH Scheduling Information MAC Control Element should have an even size\n");
        }

        LOG_D(MAC,"MCH Scheduling Information, len(%d)\n",rx_lengths[i]);

        for (j=0; j<rx_lengths[i]/2; j++) {
          uint16_t stop_mtch_val = ((uint16_t)(payload_ptr[2*j] & 0x07) << 8) | (uint16_t)payload_ptr[2*j+1];

          UE_mac_inst[module_idP].pmch_lcids[j] = (payload_ptr[2*j] & 0xF8) >> 3;
          UE_mac_inst[module_idP].pmch_stop_mtch[j] = stop_mtch_val;
          LOG_D(MAC,"lcid(%d),stop_mtch_val %d frameP(%d)\n", UE_mac_inst[module_idP].pmch_lcids[j], stop_mtch_val, frameP);

          if ((stop_mtch_val >= 2043) && (stop_mtch_val <= 2046)) {
            LOG_D(MAC,"(reserved)\n");
          }
838

839
          UE_mac_inst[module_idP].msi_status_v[j] = 0;
840

841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863
          if (UE_mac_inst[module_idP].mcch_status==1) {
            LOG_D(MAC,"[UE %d] Frame %d : MCH->MSI for sync area %d (eNB %d, %d bytes), i(%d)\n", module_idP, frameP, sync_area, eNB_index, rx_lengths[i], UE_mac_inst[module_idP].pmch_stop_mtch[j]);
            if (UE_mac_inst[module_idP].pmch_stop_mtch[j] < 2043) {
              UE_mac_inst[module_idP].pmch_stop_mtch[j] += UE_mac_inst[module_idP].msi_current_alloc;
              UE_mac_inst[module_idP].msi_status_v[j] = 1;
            }
          }
        }
      } else if (rx_lcids[i] == MCCH_LCHANID) {
        LOG_D(MAC,"[UE %d] Frame %d : SDU %d MCH->MCCH for sync area %d (eNB %d, %d bytes)\n",module_idP,frameP, i, sync_area, eNB_index, rx_lengths[i]);
        mac_rrc_data_ind_ue(module_idP,
                         CC_id,
                         frameP,0, // unknown subframe
                         M_RNTI,
                         MCCH,
                         payload_ptr + 1, // Skip RLC layer 1st byte
                         rx_lengths[i] - 1,
                         eNB_index,
                         sync_area);
      } else if (rx_lcids[i] <= 28) {
        for (j=0; j<28; j++) {
          if (rx_lcids[i] == UE_mac_inst[module_idP].pmch_lcids[j])
            break;
864
        }
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881

        if (j<28 && UE_mac_inst[module_idP].msi_status_v[j]==1) {
          LOG_D(MAC,"[UE %d] Frame %d : MCH->MTCH for sync area %d (eNB %d, %d bytes), j=%d\n", module_idP, frameP, sync_area, eNB_index, rx_lengths[i], j);

          mac_rlc_data_ind(
            module_idP,
            UE_mac_inst[module_idP].crnti,
            eNB_index,
            frameP,
            ENB_FLAG_NO,
            MBMS_FLAG_YES,
            rx_lcids[i], /*+ (maxDRB + 3),*/
            (char *)payload_ptr,
            rx_lengths[i],
            1,
            NULL);

882
        }
883 884 885 886 887
      } else {
        LOG_W(MAC,
              "[UE %d] Frame %d : unknown sdu %d rx_lcids[%d]=%d mcch status %d eNB %d \n",
              module_idP, frameP, rx_lengths[i], i, rx_lcids[i],
              UE_mac_inst[module_idP].mcch_status, eNB_index);
888
      }
889

890
      payload_ptr += rx_lengths[i];
891
    }
892

893 894
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SEND_MCH_SDU, VCD_FUNCTION_OUT);
gabrielC's avatar
gabrielC committed
895
#if UE_TIMING_TRACE
896
    stop_meas(&UE_mac_inst[module_idP].rx_mch_sdu);
gabrielC's avatar
gabrielC committed
897
#endif
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
void ue_send_sl_sdu(module_id_t module_idP,
		    uint8_t CC_id,
		    frame_t frameP,
		    sub_frame_t subframeP,
		    uint8_t* sdu,
		    uint16_t sdu_len,
		    uint8_t eNB_index,
		    sl_discovery_flag_t sl_discovery_flag
		    ) {

  int rlc_sdu_len;
  char *rlc_sdu;
  uint32_t destinationL2Id =0x00000000;

  if (sl_discovery_flag == SL_DISCOVERY_FLAG_NO) {

  // Notes: 1. no control elements are supported yet
  //        2. we exit with error if LCID != 3
  //        3. we exit with error if E=1 (more than one SDU/CE)
  // extract header
  SLSCH_SUBHEADER_24_Bit_DST_LONG *longh = (SLSCH_SUBHEADER_24_Bit_DST_LONG *)sdu;
  AssertFatal(longh->E==0,"E is non-zero\n");
  AssertFatal(((longh->LCID==3)|(longh->LCID==10)),"LCID is %d (not 3 or 10)\n",longh->LCID);
  //filter incoming packet based on destination address
  destinationL2Id = (longh->DST07<<16) | (longh->DST815 <<8) | (longh->DST1623);
  LOG_I( MAC, "[DestinationL2Id:  0x%08x]  \n", destinationL2Id );
  //in case of 1-n communication, verify that UE belongs to that group
  int i=0;
  for (i=0; i< MAX_NUM_DEST; i++)
     if (UE_mac_inst[module_idP].destinationList[i] == destinationL2Id) break;
  //match the destinationL2Id with UE L2Id or groupL2ID
  if (!((destinationL2Id == UE_mac_inst[module_idP].sourceL2Id) | (i < MAX_NUM_DEST))){
     LOG_I( MAC, "[Destination Id is neither matched with Source Id nor with Group Id, drop the packet!!! \n");
     return;
  }


  if (longh->F==1) {
    rlc_sdu_len = ((longh->L_MSB<<8)&0x7F00)|(longh->L_LSB&0xFF);
939
    rlc_sdu = (char *)sdu+sizeof(SLSCH_SUBHEADER_24_Bit_DST_LONG);
940 941 942
  }
  else {
    rlc_sdu_len = ((SLSCH_SUBHEADER_24_Bit_DST_SHORT *)sdu)->L;
943
    rlc_sdu = (char *)sdu+sizeof(SLSCH_SUBHEADER_24_Bit_DST_SHORT);
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
  }
  mac_rlc_data_ind(
		   module_idP,
		   0x1234,
		   eNB_index,
		   frameP,
		   ENB_FLAG_NO,
		   MBMS_FLAG_NO,
		   longh->LCID, //3/10
		   rlc_sdu,
		   rlc_sdu_len,
		   1,
		   NULL);
  } else { //SL_DISCOVERY
     uint16_t len = sdu_len;
     LOG_I( MAC, "SL DISCOVERY \n");
     mac_rrc_data_ind_ue(module_idP,
                           CC_id,
                           frameP,subframeP,
                           UE_mac_inst[module_idP].crnti,
                           SL_DISCOVERY,
                           sdu, //(uint8_t*)&UE_mac_inst[Mod_id].SL_Discovery[0].Rx_buffer.Payload[0],
                           len,
                           eNB_index,
                           0);

970
  }
971 972 973 974
}


int8_t ue_get_mbsfn_sf_alloction (module_id_t module_idP, uint8_t mbsfn_sync_area, unsigned char eNB_index)
975 976

{
977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992
    // currently there is one-to-one mapping between sf allocation pattern and sync area
    if (mbsfn_sync_area >= MAX_MBSFN_AREA) {
	LOG_W(MAC,
	      "[UE %" PRIu8 "] MBSFN synchronization area %" PRIu8
	      " out of range for eNB %" PRIu8 "\n", module_idP,
	      mbsfn_sync_area, eNB_index);
	return -1;
    } else if (UE_mac_inst[module_idP].
	       mbsfn_SubframeConfig[mbsfn_sync_area] != NULL) {
	return mbsfn_sync_area;
    } else {
	LOG_W(MAC,
	      "[UE %" PRIu8 "] MBSFN Subframe Config pattern %" PRIu8
	      " not found \n", module_idP, mbsfn_sync_area);
	return -1;
    }
993 994
}

995
int ue_query_p_mch_info(module_id_t module_idP, uint32_t frameP, uint32_t subframe, int commonSFAlloc_period, int commonSFAlloc_offset, int num_sf_alloc, int *mtch_active, int *msi_active, uint8_t *mch_lcid)
996
{
997 998 999
  int i, mtch_mcs = -1;
  int mtch_flag = 0;
  int msi_flag = 0;
1000

1001 1002 1003
  for (i = 0; i < 4; i++) {
    if (UE_mac_inst[module_idP].pmch_Config[i] == NULL)
      continue;
1004

1005 1006
    int mch_scheduling_period = 8 << UE_mac_inst[module_idP].pmch_Config[i]->mch_SchedulingPeriod_r9;
    uint8_t  sf_AllocEnd_r9   = UE_mac_inst[module_idP].pmch_Config[i]->sf_AllocEnd_r9;
1007

1008 1009 1010
    if (sf_AllocEnd_r9 == 2047) {
      msi_flag = 1;
      break;
1011
    }
1012

1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030
    if ((frameP % mch_scheduling_period) == (commonSFAlloc_offset + (frameP % 4))) {
      if (i == 0) {
        //msi and mtch are mutally excluded then the break is safe
        if ((num_sf_alloc == 0) && (sf_AllocEnd_r9 >= 1)) {
          msi_flag = 1;
          LOG_D(MAC,"msi(%d) should be allocated:frame(%d),submframe(%d),num_sf_alloc(%d),sf_AllocEnd_r9(%d),common_num_sf_alloc(%d)\n",i,frameP,subframe,num_sf_alloc,sf_AllocEnd_r9,UE_mac_inst[module_idP].common_num_sf_alloc);
          UE_mac_inst[module_idP].msi_current_alloc = num_sf_alloc;
          UE_mac_inst[module_idP].msi_pmch = i;
        }
      } else { //more that one MCH ?? check better this condition
        //msi and mtch are mutally excluded then the break is safe
        if ((num_sf_alloc ==  UE_mac_inst[module_idP].pmch_Config[i-1]->sf_AllocEnd_r9 + 1) && (sf_AllocEnd_r9 >= (num_sf_alloc+1))) {
          //msi should be just after 
          msi_flag = 1;
          LOG_D(MAC,"msi(%d) should be allocated:frame(%d),submframe(%d),num_sf_alloc(%d),sf_AllocEnd_r9(%d),common_num_sf_alloc(%d)\n",i,frameP,subframe,num_sf_alloc,sf_AllocEnd_r9,UE_mac_inst[module_idP].common_num_sf_alloc);
          UE_mac_inst[module_idP].msi_current_alloc = num_sf_alloc;
          UE_mac_inst[module_idP].msi_pmch = i;
        }
1031
      }
1032
    }
1033
  }
1034

1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
  for (i = 0; i < 28; i++) {
    if (UE_mac_inst[module_idP].pmch_stop_mtch[i] >= num_sf_alloc) {
      if (UE_mac_inst[module_idP].pmch_stop_mtch[i] != 2047) {
        mtch_flag = 1;
        if (UE_mac_inst[module_idP].pmch_Config[UE_mac_inst[module_idP].msi_pmch] != NULL)
          mtch_mcs = UE_mac_inst[module_idP].pmch_Config[UE_mac_inst[module_idP].msi_pmch]->dataMCS_r9;
        else
          mtch_mcs = -1;
        *mch_lcid = (uint8_t)i;
        LOG_D(MAC,"mtch should be allocated:frame(%d),submframe(%d),num_sf_alloc(%d),mtch_mcs(%d),pmch_stop_mtch(%d),lcid(%d),msi_pmch(%d)\n",frameP,subframe,num_sf_alloc,mtch_mcs,UE_mac_inst[module_idP].pmch_stop_mtch[i],UE_mac_inst[module_idP].pmch_lcids[i],UE_mac_inst[module_idP].msi_pmch);
        break;
      }
    }
1048 1049
  }

1050 1051
  *mtch_active = mtch_flag;
  *msi_active = msi_flag;
1052

1053
  return mtch_mcs;
1054 1055
}

1056
int ue_query_p_mch(module_id_t module_idP, uint32_t frameP, uint32_t subframe, int *mtch_active, int *msi_active, uint8_t *mch_lcid)
1057
{
1058 1059 1060 1061 1062 1063 1064 1065 1066
  int i, j, mtch_mcs = -1;
  int mtch_flag = 0;

  // Acount for sf_allocable in CSA
  int num_sf_alloc = 0;
  for (i = 0; i < 8; i++) {
    if (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i] == NULL)
      continue;

1067
    if (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.present == LTE_MBSFN_SubframeConfig__subframeAllocation_PR_oneFrame) // one-frameP format
1068 1069 1070 1071 1072 1073 1074 1075 1076
      continue;

    // four-frameP format
    uint32_t common_mbsfn_SubframeConfig = UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.choice.oneFrame.buf[2] |
                                          (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.choice.oneFrame.buf[1]<<8) |
                                          (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.choice.oneFrame.buf[0]<<16);
    for (j = 0; j < 24; j++)
      num_sf_alloc += ((common_mbsfn_SubframeConfig & (0x800000 >> j)) == (0x800000 >> j));
  }
1077

1078 1079 1080 1081
  for (i = 0; i < 8; i++ ) {
    if (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i] == NULL)
      continue;

1082
    if (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.present == LTE_MBSFN_SubframeConfig__subframeAllocation_PR_oneFrame) // one-frameP format
1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153
      continue;

    // four-frameP format
    int common_mbsfn_alloc_offset = UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->radioframeAllocationOffset;
    int common_mbsfn_period  = 1 << UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->radioframeAllocationPeriod;
    int commonSF_AllocPeriod = 4 << UE_mac_inst[module_idP].commonSF_AllocPeriod_r9;

    uint32_t common_mbsfn_SubframeConfig = UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.choice.oneFrame.buf[2] |
                                          (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.choice.oneFrame.buf[1]<<8) |
                                          (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.choice.oneFrame.buf[0]<<16);

    int jj = frameP % 4;
    if ((frameP % common_mbsfn_period) != (common_mbsfn_alloc_offset + jj))
      continue;

    if(UE_mac_inst[module_idP].tdd_Config == NULL){
      switch (subframe) {
      case 1:
        if ((common_mbsfn_SubframeConfig & (0x800000 >> (jj*6))) == (0x800000 >> (jj*6))) {
          mtch_flag = 1;
          mtch_mcs = ue_query_p_mch_info(module_idP,frameP,subframe,common_mbsfn_period,common_mbsfn_alloc_offset,UE_mac_inst[module_idP].common_num_sf_alloc,mtch_active,msi_active,mch_lcid);
          UE_mac_inst[module_idP].common_num_sf_alloc++;
          UE_mac_inst[module_idP].common_num_sf_alloc = UE_mac_inst[module_idP].common_num_sf_alloc % (num_sf_alloc * commonSF_AllocPeriod / common_mbsfn_period);//48;
        }
        break;
      case 2:
        if ((common_mbsfn_SubframeConfig & (0x400000 >> (jj*6))) == (0x400000 >> (jj*6))) {
          mtch_flag = 1;
          mtch_mcs = ue_query_p_mch_info(module_idP,frameP,subframe,common_mbsfn_period,common_mbsfn_alloc_offset,UE_mac_inst[module_idP].common_num_sf_alloc,mtch_active,msi_active,mch_lcid);
          UE_mac_inst[module_idP].common_num_sf_alloc++;
          UE_mac_inst[module_idP].common_num_sf_alloc = UE_mac_inst[module_idP].common_num_sf_alloc % (num_sf_alloc * commonSF_AllocPeriod / common_mbsfn_period);//48;
        }
        break;
      case 3:
        if ((common_mbsfn_SubframeConfig & (0x200000 >> (jj*6))) == (0x200000 >> (jj*6))) {
          mtch_flag = 1;
          mtch_mcs = ue_query_p_mch_info(module_idP,frameP,subframe,common_mbsfn_period,common_mbsfn_alloc_offset,UE_mac_inst[module_idP].common_num_sf_alloc,mtch_active,msi_active,mch_lcid);
          UE_mac_inst[module_idP].common_num_sf_alloc++;
          UE_mac_inst[module_idP].common_num_sf_alloc = UE_mac_inst[module_idP].common_num_sf_alloc % (num_sf_alloc * commonSF_AllocPeriod / common_mbsfn_period);//48;
        }
        break;
      case 6:
        if ((common_mbsfn_SubframeConfig & (0x100000 >> (jj*6))) == (0x100000 >> (jj*6))) {
          mtch_flag = 1;
          mtch_mcs = ue_query_p_mch_info(module_idP,frameP,subframe,common_mbsfn_period,common_mbsfn_alloc_offset,UE_mac_inst[module_idP].common_num_sf_alloc,mtch_active,msi_active,mch_lcid);
          UE_mac_inst[module_idP].common_num_sf_alloc++;
          UE_mac_inst[module_idP].common_num_sf_alloc = UE_mac_inst[module_idP].common_num_sf_alloc % (num_sf_alloc * commonSF_AllocPeriod / common_mbsfn_period);//48;
        }
        break;
      case 7:
        if ((common_mbsfn_SubframeConfig & (0x80000 >> (jj*6))) == (0x80000 >> (jj*6))) {
          mtch_flag = 1;
          mtch_mcs = ue_query_p_mch_info(module_idP,frameP,subframe,common_mbsfn_period,common_mbsfn_alloc_offset,UE_mac_inst[module_idP].common_num_sf_alloc,mtch_active,msi_active,mch_lcid);
          UE_mac_inst[module_idP].common_num_sf_alloc++;
          UE_mac_inst[module_idP].common_num_sf_alloc = UE_mac_inst[module_idP].common_num_sf_alloc % (num_sf_alloc * commonSF_AllocPeriod / common_mbsfn_period);//48;
        }
        break;
      case 8:
        if ((common_mbsfn_SubframeConfig & (0x40000 >> (jj*6))) == (0x40000 >> (jj*6))) {
          mtch_flag = 1;
          mtch_mcs = ue_query_p_mch_info(module_idP,frameP,subframe,common_mbsfn_period,common_mbsfn_alloc_offset,UE_mac_inst[module_idP].common_num_sf_alloc,mtch_active,msi_active,mch_lcid);
          UE_mac_inst[module_idP].common_num_sf_alloc++;
          UE_mac_inst[module_idP].common_num_sf_alloc = UE_mac_inst[module_idP].common_num_sf_alloc% ( num_sf_alloc*commonSF_AllocPeriod/common_mbsfn_period);//48;
        }
        break;
      }
    } else {
      // TODO TDD
    }
    if (mtch_flag == 1)
      break;
1154
  }
1155

1156
   return mtch_mcs;
1157
}
1158

1159 1160
int ue_query_mch(module_id_t module_idP, uint8_t CC_id, uint32_t frameP, uint32_t subframe, uint8_t eNB_index,uint8_t *sync_area, uint8_t *mcch_active)
{
1161

1162 1163 1164 1165
  int i = 0, j = 0, ii = 0, jj = 0, msi_pos = 0, mcch_mcs = -1, mtch_mcs = -1;
  int mcch_flag = 0, mtch_flag = 0, msi_flag = 0;
  long mch_scheduling_period = -1;
  uint8_t mch_lcid = 0;
1166

gabrielC's avatar
gabrielC committed
1167
#if UE_TIMING_TRACE
1168
  start_meas(&UE_mac_inst[module_idP].ue_query_mch);
gabrielC's avatar
gabrielC committed
1169
#endif
1170

1171
  if (UE_mac_inst[module_idP].pmch_Config[0]) {
1172
    mch_scheduling_period = 8 << UE_mac_inst[module_idP].pmch_Config[0]->mch_SchedulingPeriod_r9;
1173
  }
1174

1175 1176 1177 1178
  for (i = 0;
       i < UE_mac_inst[module_idP].num_active_mbsfn_area;
       i++ )
  {
1179
    // assume, that there is always a mapping
1180
    if ((j = ue_get_mbsfn_sf_alloction(module_idP,i,eNB_index)) == -1) {
1181
      return -1; // continue;
1182
    }
1183

1184 1185 1186 1187 1188 1189 1190
    ii = 0;
    msi_pos = 0;
    
    long mbsfn_period =  1 << UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->radioframeAllocationPeriod;
    long mbsfn_alloc_offset = UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->radioframeAllocationOffset;
    long mcch_period  = 32 << UE_mac_inst[module_idP].mbsfn_AreaInfo[j]->mcch_Config_r9.mcch_RepetitionPeriod_r9;
    long mcch_offset        = UE_mac_inst[module_idP].mbsfn_AreaInfo[j]->mcch_Config_r9.mcch_Offset_r9;
1191

1192
    LOG_D(MAC,
1193
          "[UE %d] Frame %d subframe %d: Checking MBSFN Sync Area %d/%d with SF allocation %d/%d for MCCH and MTCH (mbsfn period %ld, mcch period %ld,mac sched period (%ld,%ld))\n",
1194
          module_idP,frameP, subframe,i,UE_mac_inst[module_idP].num_active_mbsfn_area,
1195
          j,UE_mac_inst[module_idP].num_sf_allocation_pattern,mbsfn_period,mcch_period,
1196
          mcch_offset,mbsfn_alloc_offset);
1197

1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216
    // get the real MCS value
    switch (UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.signallingMCS_r9) {
    case 0:
      mcch_mcs = 2;
      break;

    case 1:
      mcch_mcs = 7;
      break;

    case 2:
      mcch_mcs = 13;
      break;

    case 3:
      mcch_mcs = 19;
      break;
    }

1217
    if (UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.present == LTE_MBSFN_SubframeConfig__subframeAllocation_PR_oneFrame) { // one-frameP format
1218
      if (frameP % mbsfn_period == mbsfn_alloc_offset) { // MBSFN frameP
1219 1220 1221

        if (UE_mac_inst[module_idP].pmch_Config[0]) {
          //  Find the first subframe in this MCH to transmit MSI
1222
          if (frameP % mch_scheduling_period == mbsfn_alloc_offset) {
1223
            while (ii == 0) {
1224
              ii = UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & (0x80 >> msi_pos);
1225 1226 1227 1228 1229 1230 1231 1232
              msi_pos++;
            }
          }
        }

        // Check if the subframe is for MSI, MCCH or MTCHs and Set the correspoding flag to 1
        switch (subframe) {
        case 1:
1233
          if (UE_mac_inst[module_idP].tdd_Config == NULL) {
1234
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF1) == MBSFN_FDD_SF1) {
1235
              if (msi_pos == 1) {
1236
                msi_flag = 1;
1237
              }
1238

1239 1240
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF1) == MBSFN_FDD_SF1)) {
1241
                mcch_flag = 1;
1242
              }
1243 1244 1245 1246 1247 1248 1249 1250

              mtch_flag = 1;
            }
          }

          break;

        case 2:
1251
          if (UE_mac_inst[module_idP].tdd_Config == NULL) {
1252
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF2) == MBSFN_FDD_SF2) {
1253
              if (msi_pos == 2) {
1254
                msi_flag = 1;
1255
              }
1256

1257 1258
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF2) == MBSFN_FDD_SF2)) {
1259
                mcch_flag = 1;
1260
              }
1261 1262 1263 1264

              mtch_flag = 1;
            }
          }
1265

1266 1267 1268
          break;

        case 3:
1269
          if (UE_mac_inst[module_idP].tdd_Config != NULL) { // TDD
1270
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF3) == MBSFN_TDD_SF3) {
1271
              if (msi_pos == 1) {
1272
                msi_flag = 1;
1273
              }
1274

1275 1276
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF3) == MBSFN_TDD_SF3)) {
1277
                mcch_flag = 1;
1278
              }
1279 1280 1281 1282 1283

              mtch_flag = 1;
            }
          } else { // FDD
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF3) == MBSFN_FDD_SF3) {
1284
              if (msi_pos == 3) {
1285
                msi_flag = 1;
1286
              }
1287

1288 1289
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF3) == MBSFN_FDD_SF3)) {
1290
                mcch_flag = 1;
1291
              }
1292 1293 1294 1295 1296 1297 1298 1299

              mtch_flag = 1;
            }
          }

          break;

        case 4:
1300
          if (UE_mac_inst[module_idP].tdd_Config != NULL) {
1301
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF4) == MBSFN_TDD_SF4) {
1302
              if (msi_pos == 2) {
1303
                msi_flag = 1;
1304
              }
1305

1306 1307
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF4) == MBSFN_TDD_SF4)) {
1308
                mcch_flag = 1;
1309
              }
1310 1311 1312 1313 1314 1315 1316 1317

              mtch_flag = 1;
            }
          }

          break;

        case 6:
1318
          if (UE_mac_inst[module_idP].tdd_Config == NULL) {
1319
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF6) == MBSFN_FDD_SF6) {
1320
              if (msi_pos == 4) {
1321
                msi_flag = 1;
1322
              }
1323

1324 1325
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF6) == MBSFN_FDD_SF6)) {
1326
                mcch_flag = 1;
1327
              }
1328 1329 1330

              mtch_flag = 1;
            }
1331
          }
1332 1333 1334 1335

          break;

        case 7:
1336
          if (UE_mac_inst[module_idP].tdd_Config != NULL) { // TDD
1337
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF7) == MBSFN_TDD_SF7) {
1338
              if (msi_pos == 3) {
1339
                msi_flag = 1;
1340
              }
1341

1342 1343
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF7) == MBSFN_TDD_SF7)) {
1344
                mcch_flag = 1;
1345
              }
1346 1347 1348 1349 1350

              mtch_flag = 1;
            }
          } else { // FDD
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF7) == MBSFN_FDD_SF7) {
1351
              if (msi_pos == 5) {
1352
                msi_flag = 1;
1353
              }
1354

1355 1356
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF7) == MBSFN_FDD_SF7)) {
1357
                mcch_flag = 1;
1358
              }
1359 1360 1361

              mtch_flag = 1;
            }
1362
          }
1363 1364 1365 1366

          break;

        case 8:
1367
          if (UE_mac_inst[module_idP].tdd_Config != NULL) { //TDD
1368
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF8) == MBSFN_TDD_SF8) {
1369
              if (msi_pos == 4) {
1370
                msi_flag = 1;
1371
              }
1372

1373 1374
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF8) == MBSFN_TDD_SF8)) {
1375
                mcch_flag = 1;
1376
              }
1377 1378 1379 1380 1381

              mtch_flag = 1;
            }
          } else { // FDD
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_FDD_SF8) == MBSFN_FDD_SF8) {
1382
              if (msi_pos == 6) {
1383
                msi_flag = 1;
1384
              }
1385

1386 1387
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_FDD_SF8) == MBSFN_FDD_SF8)) {
1388
                mcch_flag = 1;
1389
              }
1390 1391 1392 1393 1394 1395 1396 1397

              mtch_flag = 1;
            }
          }

          break;

        case 9:
1398
          if (UE_mac_inst[module_idP].tdd_Config != NULL) {
1399
            if ((UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0] & MBSFN_TDD_SF9) == MBSFN_TDD_SF9) {
1400
              if (msi_pos == 5) {
1401
                msi_flag = 1;
1402
              }
1403

1404 1405
              if ((frameP % mcch_period == mcch_offset) &&
                  ((UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0] & MBSFN_TDD_SF9) == MBSFN_TDD_SF9)) {
1406
                mcch_flag = 1;
1407
              }
1408 1409 1410 1411 1412 1413 1414 1415

              mtch_flag = 1;
            }
          }

          break;
        }// end switch

1416 1417 1418 1419 1420 1421
        // Acount for sf_allocable in CSA
        int num_sf_alloc = 0;
        for (i = 0; i < 8; i++) {
          if (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i] == NULL)
            continue;

1422
          if (UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.present != LTE_MBSFN_SubframeConfig__subframeAllocation_PR_oneFrame)
1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442
            continue;

          uint32_t common_mbsfn_SubframeConfig = UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i]->subframeAllocation.choice.oneFrame.buf[0];
          for (j = 0; j < 6; j++)
            num_sf_alloc += ((common_mbsfn_SubframeConfig & (0x80 >> j)) == (0x80 >> j));
        }

        for (i = 0; i < 28; i++) {
          if (UE_mac_inst[module_idP].pmch_stop_mtch[i] >= num_sf_alloc) {
            if (UE_mac_inst[module_idP].pmch_stop_mtch[i] != 2047) {
              if (UE_mac_inst[module_idP].pmch_Config[UE_mac_inst[module_idP].msi_pmch] != NULL)
                mtch_mcs = UE_mac_inst[module_idP].pmch_Config[UE_mac_inst[module_idP].msi_pmch]->dataMCS_r9;
              else
                mtch_mcs = -1;
              mch_lcid = (uint8_t)i;
              break;
            }
          }
        }

1443 1444 1445 1446 1447 1448 1449 1450
        // sf allocation is non-overlapping
        if ((msi_flag==1) || (mcch_flag==1) || (mtch_flag==1)) {
          LOG_D(MAC,"[UE %d] Frame %d Subframe %d: sync area %d SF alloc %d: msi flag %d, mcch flag %d, mtch flag %d\n",
                module_idP, frameP, subframe,i,j,msi_flag,mcch_flag,mtch_flag);

          *sync_area=i;
          break;
        }
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 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543
      }
    } else { // four-frameP format
      uint32_t mbsfn_SubframeConfig = UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[2] |
                                     (UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[1]<<8) |
                                     (UE_mac_inst[module_idP].mbsfn_SubframeConfig[j]->subframeAllocation.choice.oneFrame.buf[0]<<16);
      uint32_t MCCH_mbsfn_SubframeConfig = /* UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[2] |
                                          (UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[1]<<8) | */
                                          (UE_mac_inst[module_idP].mbsfn_AreaInfo[i]->mcch_Config_r9.sf_AllocInfo_r9.buf[0]<<16);

      jj=frameP%4;
      if ((frameP % mbsfn_period) == (mbsfn_alloc_offset+jj)) {
        if (UE_mac_inst[module_idP].tdd_Config == NULL) {
          switch (subframe) {
          case 1:
            if ((mbsfn_SubframeConfig & (0x800000>>(jj*6))) == (0x800000>>(jj*6))) {
              if ((frameP % mcch_period == (mcch_offset+jj)) && ((MCCH_mbsfn_SubframeConfig & (0x800000>>(jj*6))) == (0x800000>>(jj*6)))) {
                mcch_flag=1;
                LOG_D(MAC,"frameP(%d),mcch_period(%ld),mbsfn_SubframeConfig(%x),MCCH_mbsfn_SubframeConfig(%x),mask(%x),jj(%d),num_sf_alloc(%d)\n",
                      frameP, mcch_period, mbsfn_SubframeConfig, MCCH_mbsfn_SubframeConfig, (0x800000>>(jj*6)), jj, UE_mac_inst[module_idP].common_num_sf_alloc);
                if(UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[0]==NULL)
                  UE_mac_inst[module_idP].common_num_sf_alloc++;
              }
            }
            break;
          case 2:
            if ((mbsfn_SubframeConfig & (0x400000>>(jj*6))) == (0x400000>>(jj*6))) {
              if ((frameP % mcch_period == (mcch_offset+jj)) && ((MCCH_mbsfn_SubframeConfig & (0x400000>>(jj*6))) == (0x400000>>(jj*6)))) {
                mcch_flag=1;
                LOG_D(MAC,"frameP(%d),mcch_period(%ld),mbsfn_SubframeConfig(%x),MCCH_mbsfn_SubframeConfig(%x),mask(%x),jj(%d),num_sf_alloc(%d)\n",
                      frameP, mcch_period, mbsfn_SubframeConfig, MCCH_mbsfn_SubframeConfig, (0x400000>>(jj*6)), jj, UE_mac_inst[module_idP].common_num_sf_alloc);
                if(UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[0]==NULL)
                  UE_mac_inst[module_idP].common_num_sf_alloc++;
              }
            }
            break;
          case 3:
            if ((mbsfn_SubframeConfig & (0x200000>>(jj*6))) == (0x200000>>(jj*6))) {
              if ((frameP % mcch_period == (mcch_offset+jj)) && ((MCCH_mbsfn_SubframeConfig & (0x200000>>(jj*6))) == (0x200000>>(jj*6)))) {
                LOG_D(MAC,"frameP(%d),mcch_period(%ld),mbsfn_SubframeConfig(%x),MCCH_mbsfn_SubframeConfig(%x),mask(%x),jj(%d),num_sf_alloc(%d)\n",
                      frameP, mcch_period, mbsfn_SubframeConfig, MCCH_mbsfn_SubframeConfig, (0x200000>>(jj*6)), jj, UE_mac_inst[module_idP].common_num_sf_alloc);
                mcch_flag=1;
                if(UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[0]==NULL)
                  UE_mac_inst[module_idP].common_num_sf_alloc++;
              }
            }
            break;
          case 6:
            if ((mbsfn_SubframeConfig & (0x100000>>(jj*6))) == (0x100000>>(jj*6))) {
              if ((frameP % mcch_period == (mcch_offset+jj)) && ((MCCH_mbsfn_SubframeConfig & (0x100000>>(jj*6))) == (0x100000>>(jj*6)))) {
                LOG_D(MAC,"frameP(%d),mcch_period(%ld),mbsfn_SubframeConfig(%x),MCCH_mbsfn_SubframeConfig(%x),mask(%x),jj(%d),num_sf_alloc(%d)\n",
                      frameP, mcch_period, mbsfn_SubframeConfig, MCCH_mbsfn_SubframeConfig, (0x100000>>(jj*6)), jj, UE_mac_inst[module_idP].common_num_sf_alloc);
                mcch_flag=1;
                if(UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[0]==NULL)
                  UE_mac_inst[module_idP].common_num_sf_alloc++;
              }
            }
            break;
          case 7:
            if ((mbsfn_SubframeConfig & (0x80000>>(jj*6))) == (0x80000>>(jj*6))) {
              if ((frameP % mcch_period == (mcch_offset+jj)) && ((MCCH_mbsfn_SubframeConfig & (0x80000>>(jj*6))) == (0x80000>>(jj*6)))) {
                LOG_D(MAC,"frameP(%d),mcch_period(%ld),mbsfn_SubframeConfig(%x),MCCH_mbsfn_SubframeConfig(%x),mask(%x),jj(%d),num_sf_alloc(%d)\n",
                      frameP, mcch_period, mbsfn_SubframeConfig, MCCH_mbsfn_SubframeConfig, (0x80000>>(jj*6)), jj, UE_mac_inst[module_idP].common_num_sf_alloc);
                if(UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[0]==NULL)
                  UE_mac_inst[module_idP].common_num_sf_alloc++;
                mcch_flag=1;
              }
            }
            break;
          case 8:
            if ((mbsfn_SubframeConfig & (0x40000>>(jj*6))) == (0x40000>>(jj*6))) {
              if ((frameP % mcch_period == (mcch_offset+jj)) && ((MCCH_mbsfn_SubframeConfig & (0x40000>>(jj*6))) == (0x40000>>(jj*6)))) {
                LOG_D(MAC,"frameP(%d),mcch_period(%ld),mbsfn_SubframeConfig(%x),MCCH_mbsfn_SubframeConfig(%x),mask(%x),jj(%d),num_sf_alloc(%d)\n",
                      frameP, mcch_period, mbsfn_SubframeConfig, MCCH_mbsfn_SubframeConfig, (0x40000>>(jj*6)), jj, UE_mac_inst[module_idP].common_num_sf_alloc);
                if(UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[0]==NULL)
                  UE_mac_inst[module_idP].common_num_sf_alloc++;
                mcch_flag=1;
              }
            }
            break;
          }// end switch
        } else {
          // TODO TDD
        }

        mtch_mcs = ue_query_p_mch(module_idP, frameP, subframe, &mtch_flag, &msi_flag, &mch_lcid);

        // sf allocation is non-overlapping
        if ((msi_flag==1) || (mcch_flag==1) || (mtch_flag==1)) {
          LOG_D(MAC,"[UE %d] Frame %d Subframe %d: sync area %d SF alloc %d: msi flag %d, mcch flag %d, mtch flag %d\n",
                module_idP, frameP, subframe,i,j,msi_flag,mcch_flag,mtch_flag);
          *sync_area=i;
          break;
        }
1544
      }
1545
    }
1546
  } // end of for
1547

gabrielC's avatar
gabrielC committed
1548
#if UE_TIMING_TRACE
1549
  stop_meas(&UE_mac_inst[module_idP].ue_query_mch);
gabrielC's avatar
gabrielC committed
1550
#endif
1551

1552 1553
  if ((mcch_flag == 1)) {	// || (msi_flag==1))
    *mcch_active = 1;
1554
  }
1555

1556
  if ( (mcch_flag==1) || ((msi_flag==1) && (UE_mac_inst[module_idP].mcch_status==1)) ) {
1557 1558 1559 1560 1561 1562 1563 1564 1565 1566
    if (msi_flag!=1) {
      for (i=0; i<8; i++)
        UE_mac_inst[module_idP].commonSF_Alloc_r9_mbsfn_SubframeConfig[i] = NULL;
      for (i=0; i<15; i++)
        UE_mac_inst[module_idP].pmch_Config[i] = NULL;
      for (i=0; i<28 ;i++) {
        UE_mac_inst[module_idP].pmch_lcids[i] = -1;
        UE_mac_inst[module_idP].pmch_stop_mtch[i] = 2047;
        UE_mac_inst[module_idP].msi_status_v[i] = 0;
      }
1567
    } else {
1568 1569 1570 1571 1572
      for (i=0; i<28; i++) {
        UE_mac_inst[module_idP].pmch_lcids[i] = -1;
        UE_mac_inst[module_idP].pmch_stop_mtch[i] = 2047;
        UE_mac_inst[module_idP].msi_status_v[i] = 0;
      }
1573
    }
1574
    return mcch_mcs;
1575 1576
  } else if ((mtch_flag==1) && (UE_mac_inst[module_idP].msi_status_v[(mch_lcid > 27) ? 27 : mch_lcid] == 1)) {
    return mtch_mcs;
1577
  } else {
1578
    return -1;
1579
  }
1580 1581 1582 1583
}

#endif

1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594
unsigned char
generate_ulsch_header(uint8_t * mac_header,
		      uint8_t num_sdus,
		      uint8_t short_padding,
		      uint16_t * sdu_lengths,
		      uint8_t * sdu_lcids,
		      POWER_HEADROOM_CMD * power_headroom,
		      uint16_t * crnti,
		      BSR_SHORT * truncated_bsr,
		      BSR_SHORT * short_bsr,
		      BSR_LONG * long_bsr, unsigned short post_padding)
1595
{
1596

1597 1598 1599 1600
    SCH_SUBHEADER_FIXED *mac_header_ptr =
	(SCH_SUBHEADER_FIXED *) mac_header;
    unsigned char first_element = 0, last_size = 0, i;
    unsigned char mac_header_control_elements[16], *ce_ptr;
1601

1602
    LOG_D(MAC, "[UE] Generate ULSCH : num_sdus %d\n", num_sdus);
1603
#ifdef DEBUG_HEADER_PARSING
1604

1605 1606 1607 1608
    for (i = 0; i < num_sdus; i++) {
	LOG_T(MAC, "[UE] sdu %d : lcid %d length %d", i, sdu_lcids[i],
	      sdu_lengths[i]);
    }
1609

1610
    LOG_T(MAC, "\n");
1611
#endif
1612 1613 1614 1615 1616 1617 1618 1619 1620
    ce_ptr = &mac_header_control_elements[0];

    if ((short_padding == 1) || (short_padding == 2)) {
	mac_header_ptr->R = 0;
	mac_header_ptr->E = 0;
	mac_header_ptr->LCID = SHORT_PADDING;
	first_element = 1;
	last_size = 1;
    }
1621

1622 1623 1624 1625 1626 1627 1628
    if (short_padding == 2) {
	mac_header_ptr->E = 1;
	mac_header_ptr++;
	mac_header_ptr->R = 0;
	mac_header_ptr->E = 0;
	mac_header_ptr->LCID = SHORT_PADDING;
	last_size = 1;
1629 1630
    }

1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646
    if (power_headroom) {
	if (first_element > 0) {
	    mac_header_ptr->E = 1;
	    mac_header_ptr++;
	} else {
	    first_element = 1;
	}

	mac_header_ptr->R = 0;
	mac_header_ptr->E = 0;
	mac_header_ptr->LCID = POWER_HEADROOM;
	last_size = 1;
	*((POWER_HEADROOM_CMD *) ce_ptr) = (*power_headroom);
	ce_ptr += sizeof(POWER_HEADROOM_CMD);
	LOG_D(MAC, "phr header size %zu\n", sizeof(POWER_HEADROOM_CMD));
    }
1647

1648
    if (crnti) {
1649
#ifdef DEBUG_HEADER_PARSING
1650 1651
	LOG_D(MAC, "[UE] CRNTI : %x (first_element %d)\n", *crnti,
	      first_element);
1652
#endif
1653

1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667
	if (first_element > 0) {
	    mac_header_ptr->E = 1;
	    mac_header_ptr++;
	} else {
	    first_element = 1;
	}

	mac_header_ptr->R = 0;
	mac_header_ptr->E = 0;
	mac_header_ptr->LCID = CRNTI;
	last_size = 1;
	*((uint16_t *) ce_ptr) = (*crnti);
	ce_ptr += sizeof(uint16_t);
	//    printf("offset %d\n",ce_ptr-mac_header_control_elements);
1668 1669
    }

1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682
    if (truncated_bsr) {
	if (first_element > 0) {
	    mac_header_ptr->E = 1;
	    /*
	       printf("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
	       ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
	       ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
	       ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
	     */
	    mac_header_ptr++;
	} else {
	    first_element = 1;
	}
1683 1684

#ifdef DEBUG_HEADER_PARSING
1685
	LOG_D(MAC, "[UE] Scheduler Truncated BSR Header\n");
1686
#endif
1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707
	mac_header_ptr->R = 0;
	mac_header_ptr->E = 0;
	mac_header_ptr->LCID = TRUNCATED_BSR;
	last_size = 1;
	*((BSR_TRUNCATED *) ce_ptr) = (*truncated_bsr);
	ce_ptr += sizeof(BSR_TRUNCATED);
	//    printf("(cont_res) : offset %d\n",ce_ptr-mac_header_control_elements);

    } else if (short_bsr) {
	if (first_element > 0) {
	    mac_header_ptr->E = 1;
	    /*
	       printf("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
	       ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
	       ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
	       ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
	     */
	    mac_header_ptr++;
	} else {
	    first_element = 1;
	}
1708

1709
#ifdef DEBUG_HEADER_PARSING
1710
	LOG_D(MAC, "[UE] Scheduler SHORT BSR Header\n");
1711
#endif
1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732
	mac_header_ptr->R = 0;
	mac_header_ptr->E = 0;
	mac_header_ptr->LCID = SHORT_BSR;
	last_size = 1;
	*((BSR_SHORT *) ce_ptr) = (*short_bsr);
	ce_ptr += sizeof(BSR_SHORT);

	//    printf("(cont_res) : offset %d\n",ce_ptr-mac_header_control_elements);
    } else if (long_bsr) {
	if (first_element > 0) {
	    mac_header_ptr->E = 1;
	    /*
	       printf("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
	       ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
	       ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
	       ((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
	     */
	    mac_header_ptr++;
	} else {
	    first_element = 1;
	}
1733

1734
#ifdef DEBUG_HEADER_PARSING
1735
	LOG_D(MAC, "[UE] Scheduler Long BSR Header\n");
1736
#endif
1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754
	mac_header_ptr->R = 0;
	mac_header_ptr->E = 0;
	mac_header_ptr->LCID = LONG_BSR;
	last_size = 1;

	*(ce_ptr) =
	    (long_bsr->
	     Buffer_size0 << 2) | ((long_bsr->Buffer_size1 & 0x30) >> 4);
	*(ce_ptr + 1) =
	    ((long_bsr->Buffer_size1 & 0x0F) << 4) | ((long_bsr->
						       Buffer_size2 & 0x3C)
						      >> 2);
	*(ce_ptr + 2) =
	    ((long_bsr->
	      Buffer_size2 & 0x03) << 2) | (long_bsr->Buffer_size3 & 0x3F);
	ce_ptr += BSR_LONG_SIZE;

	//    printf("(cont_res) : offset %d\n",ce_ptr-mac_header_control_elements);
1755
    }
1756
    //  printf("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
1757

1758
    for (i = 0; i < num_sdus; i++) {
1759
#ifdef DEBUG_HEADER_PARSING
1760 1761
	LOG_T(MAC, "[UE] sdu subheader %d (lcid %d, %d bytes)\n", i,
	      sdu_lcids[i], sdu_lengths[i]);
1762
#endif
1763

1764 1765 1766 1767
	if ((i == (num_sdus - 1))
	    && ((short_padding) || (post_padding == 0))) {
	    if (first_element > 0) {
		mac_header_ptr->E = 1;
1768
#ifdef DEBUG_HEADER_PARSING
1769 1770 1771 1772 1773
		LOG_D(MAC, "[UE] last subheader : %x (R%d,E%d,LCID%d)\n",
		      *(unsigned char *) mac_header_ptr,
		      ((SCH_SUBHEADER_FIXED *) mac_header_ptr)->R,
		      ((SCH_SUBHEADER_FIXED *) mac_header_ptr)->E,
		      ((SCH_SUBHEADER_FIXED *) mac_header_ptr)->LCID);
1774
#endif
1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834
		mac_header_ptr += last_size;
	    }
	    mac_header_ptr->R = 0;
	    mac_header_ptr->E = 0;
	    mac_header_ptr->LCID = sdu_lcids[i];
	} else {
	    if ((first_element > 0)) {
		mac_header_ptr->E = 1;
#ifdef DEBUG_HEADER_PARSING
		LOG_D(MAC, "[UE] last subheader : %x (R%d,E%d,LCID%d)\n",
		      *(unsigned char *) mac_header_ptr,
		      ((SCH_SUBHEADER_FIXED *) mac_header_ptr)->R,
		      ((SCH_SUBHEADER_FIXED *) mac_header_ptr)->E,
		      ((SCH_SUBHEADER_FIXED *) mac_header_ptr)->LCID);
#endif
		mac_header_ptr += last_size;
		//      printf("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
	    } else {
		first_element = 1;

	    }

	    if (sdu_lengths[i] < 128) {
		((SCH_SUBHEADER_SHORT *) mac_header_ptr)->R = 0;	// 3
		((SCH_SUBHEADER_SHORT *) mac_header_ptr)->E = 0;
		((SCH_SUBHEADER_SHORT *) mac_header_ptr)->F = 0;
		((SCH_SUBHEADER_SHORT *) mac_header_ptr)->LCID =
		    sdu_lcids[i];
		((SCH_SUBHEADER_SHORT *) mac_header_ptr)->L =
		    (unsigned char) sdu_lengths[i];
		last_size = 2;
#ifdef DEBUG_HEADER_PARSING
		LOG_D(MAC, "[UE] short sdu\n");
		LOG_T(MAC,
		      "[UE] last subheader : %x (R%d,E%d,LCID%d,F%d,L%d)\n",
		      ((uint16_t *) mac_header_ptr)[0],
		      ((SCH_SUBHEADER_SHORT *) mac_header_ptr)->R,
		      ((SCH_SUBHEADER_SHORT *) mac_header_ptr)->E,
		      ((SCH_SUBHEADER_SHORT *) mac_header_ptr)->LCID,
		      ((SCH_SUBHEADER_SHORT *) mac_header_ptr)->F,
		      ((SCH_SUBHEADER_SHORT *) mac_header_ptr)->L);
#endif
	    } else {
		((SCH_SUBHEADER_LONG *) mac_header_ptr)->R = 0;
		((SCH_SUBHEADER_LONG *) mac_header_ptr)->E = 0;
		((SCH_SUBHEADER_LONG *) mac_header_ptr)->F = 1;
		((SCH_SUBHEADER_LONG *) mac_header_ptr)->LCID =
		    sdu_lcids[i];
		((SCH_SUBHEADER_LONG *) mac_header_ptr)->L_MSB =
		    ((unsigned short) sdu_lengths[i] >> 8) & 0x7f;
		((SCH_SUBHEADER_LONG *) mac_header_ptr)->L_LSB =
		    (unsigned short) sdu_lengths[i] & 0xff;
		((SCH_SUBHEADER_LONG *) mac_header_ptr)->padding = 0x00;
		last_size = 3;
#ifdef DEBUG_HEADER_PARSING
		LOG_D(MAC, "[UE] long sdu\n");
#endif
	    }
	}
    }
1835

1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848
    if (post_padding > 0) {	// we have lots of padding at the end of the packet
	mac_header_ptr->E = 1;
	mac_header_ptr += last_size;
	// add a padding element
	mac_header_ptr->R = 0;
	mac_header_ptr->E = 0;
	mac_header_ptr->LCID = SHORT_PADDING;
	mac_header_ptr++;
    } else {			// no end of packet padding
	// last SDU subhead is of fixed type (sdu length implicitly to be computed at UE)
	mac_header_ptr++;
	//mac_header_ptr=last_size; // FIXME: should be ++
    }
1849

1850

1851 1852 1853 1854 1855 1856
    if ((ce_ptr - mac_header_control_elements) > 0) {
	memcpy((void *) mac_header_ptr, mac_header_control_elements,
	       ce_ptr - mac_header_control_elements);
	mac_header_ptr +=
	    (unsigned char) (ce_ptr - mac_header_control_elements);
    }
1857
#ifdef DEBUG_HEADER_PARSING
1858
    LOG_T(MAC, " [UE] header : ");
1859

1860 1861
    for (i = 0; i < ((unsigned char *) mac_header_ptr - mac_header); i++) {
	LOG_T(MAC, "%2x.", mac_header[i]);
1862 1863
    }

1864
    LOG_T(MAC, "\n");
1865
#endif
1866
    return ((unsigned char *) mac_header_ptr - mac_header);
1867 1868 1869

}

1870 1871 1872 1873
void
ue_get_sdu(module_id_t module_idP, int CC_id, frame_t frameP,
	   sub_frame_t subframe, uint8_t eNB_index,
	   uint8_t * ulsch_buffer, uint16_t buflen, uint8_t * access_mode)
1874
{
1875

1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911
    uint8_t total_rlc_pdu_header_len = 0, rlc_pdu_header_len_last = 0;
    uint16_t buflen_remain = 0;
    uint8_t bsr_len = 0, bsr_ce_len = 0, bsr_header_len = 0;
    uint8_t phr_header_len = 0, phr_ce_len = 0, phr_len = 0;
    uint8_t lcid = 0, lcid_rlc_pdu_count = 0;
    boolean_t is_lcid_processed = FALSE;
    boolean_t is_all_lcid_processed = FALSE;
    uint16_t sdu_lengths[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
    uint8_t sdu_lcids[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
    uint8_t payload_offset = 0, num_sdus = 0;
    uint8_t ulsch_buff[MAX_ULSCH_PAYLOAD_BYTES];
    uint16_t sdu_length_total = 0;
    BSR_SHORT bsr_short, bsr_truncated;
    BSR_LONG bsr_long;
    BSR_SHORT *bsr_s = &bsr_short;
    BSR_LONG *bsr_l = &bsr_long;
    BSR_SHORT *bsr_t = &bsr_truncated;
    POWER_HEADROOM_CMD phr;
    POWER_HEADROOM_CMD *phr_p = &phr;
    unsigned short short_padding = 0, post_padding = 0, padding_len = 0;
    int j;			// used for padding
    // Compute header length
    int lcg_id = 0;
    int lcg_id_bsr_trunc = 0;
    int highest_priority = 16;
    int num_lcg_id_with_data = 0;
    rlc_buffer_occupancy_t lcid_buffer_occupancy_old =
	0, lcid_buffer_occupancy_new = 0;

    LOG_D(MAC,
	  "[UE %d] MAC PROCESS UL TRANSPORT BLOCK at frame%d subframe %d TBS=%d\n",
	  module_idP, frameP, subframe, buflen);


    AssertFatal(CC_id == 0,
		"Transmission on secondary CCs is not supported yet\n");
1912

gabrielC's avatar
gabrielC committed
1913
#if UE_TIMING_TRACE
1914
    start_meas(&UE_mac_inst[module_idP].tx_ulsch_sdu);
gabrielC's avatar
gabrielC committed
1915
#endif
1916 1917
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_GET_SDU, VCD_FUNCTION_IN);
1918

Cedric Roux's avatar
Cedric Roux committed
1919
#ifdef CBA
1920

1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936
    if (*access_mode == CBA_ACCESS) {
	LOG_D(MAC, "[UE %d] frameP %d subframe %d try CBA transmission\n",
	      module_idP, frameP, subframe);

	//if (UE_mac_inst[module_idP].scheduling_info.LCID_status[DTCH] == LCID_EMPTY)
	if (cba_access(module_idP, frameP, subframe, eNB_index, buflen) ==
	    0) {
	    *access_mode = POSTPONED_ACCESS;
	    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
		(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_GET_SDU, VCD_FUNCTION_OUT);
	    return;
	}

	LOG_I(MAC,
	      "[UE %d] frameP %d subframe %d CBA transmission oppurtunity, tbs %d\n",
	      module_idP, frameP, subframe, buflen);
1937
    }
1938
#endif
1939 1940 1941 1942 1943 1944 1945 1946
    bsr_header_len = 0;
    phr_header_len = 1;		//sizeof(SCH_SUBHEADER_FIXED);

    while (lcg_id < MAX_NUM_LCGID) {
	if (UE_mac_inst[module_idP].scheduling_info.BSR_bytes[lcg_id]) {
	    num_lcg_id_with_data++;
	}
	lcg_id++;
hbilel's avatar
hbilel committed
1947 1948
    }

1949 1950 1951 1952 1953 1954 1955 1956 1957
    if (num_lcg_id_with_data) {
	LOG_D(MAC,
	      "[UE %d] MAC Tx data pending at frame%d subframe %d nb LCG =%d Bytes for LCG0=%d LCG1=%d LCG2=%d LCG3=%d BSR Trigger status =%d TBS=%d\n",
	      module_idP, frameP, subframe, num_lcg_id_with_data,
	      UE_mac_inst[module_idP].scheduling_info.BSR_bytes[0],
	      UE_mac_inst[module_idP].scheduling_info.BSR_bytes[1],
	      UE_mac_inst[module_idP].scheduling_info.BSR_bytes[2],
	      UE_mac_inst[module_idP].scheduling_info.BSR_bytes[3],
	      UE_mac_inst[module_idP].BSR_reporting_active, buflen);
1958

1959
    }
1960 1961 1962 1963 1964 1965 1966 1967 1968
    //Restart ReTxBSR Timer at new grant indication (36.321)
    if (UE_mac_inst[module_idP].scheduling_info.retxBSR_SF !=
	MAC_UE_BSR_TIMER_NOT_RUNNING) {
	UE_mac_inst[module_idP].scheduling_info.retxBSR_SF =
	    get_sf_retxBSRTimer(UE_mac_inst[module_idP].
				scheduling_info.retxBSR_Timer);
    }
    // periodicBSR-Timer expires, trigger BSR
    if ((UE_mac_inst[module_idP].scheduling_info.periodicBSR_Timer !=
1969
	  LTE_PeriodicBSR_Timer_r12_infinity)
1970 1971 1972 1973 1974 1975 1976 1977
	&& (UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF == 0)) {
	// Trigger BSR Periodic
	UE_mac_inst[module_idP].BSR_reporting_active |=
	    BSR_TRIGGER_PERIODIC;

	LOG_D(MAC,
	      "[UE %d] MAC BSR Triggered PeriodicBSR Timer expiry at frame%d subframe %d TBS=%d\n",
	      module_idP, frameP, subframe, buflen);
hbilel's avatar
hbilel committed
1978

1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
    }
    //Compute BSR Length if Regular or Periodic BSR is triggered
    //WARNING: if BSR long is computed, it may be changed to BSR short during or after multiplexing if there remains less than 1 LCGROUP with data after Tx
    if (UE_mac_inst[module_idP].BSR_reporting_active) {

	AssertFatal((UE_mac_inst[module_idP].BSR_reporting_active &
		     BSR_TRIGGER_PADDING) == 0,
		    "Inconsistent BSR Trigger=%d !\n",
		    UE_mac_inst[module_idP].BSR_reporting_active);

	if (buflen >= 4) {
	    //A Regular or Periodic BSR can only be sent if TBS >= 4 as transmitting only a BSR is not allowed if UE has data to transmit
	    bsr_header_len = 1;

	    if (num_lcg_id_with_data <= 1) {
		bsr_ce_len = sizeof(BSR_SHORT);	//1 byte
	    } else {
		bsr_ce_len = BSR_LONG_SIZE;	//3 bytes
	    }
	}
    }
2000

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
    bsr_len = bsr_ce_len + bsr_header_len;

    phr_ce_len =
	(UE_mac_inst[module_idP].PHR_reporting_active ==
	 1) ? 1 /* sizeof(POWER_HEADROOM_CMD) */ : 0;
    if ((phr_ce_len > 0)
	&& ((phr_ce_len + phr_header_len + bsr_len) <= buflen)) {
	phr_len = phr_ce_len + phr_header_len;
	LOG_D(MAC,
	      "[UE %d] header size info: PHR len %d (ce%d,hdr%d) buff_len %d\n",
	      module_idP, phr_len, phr_ce_len, phr_header_len, buflen);
    } else {
	phr_len = 0;
	phr_header_len = 0;
	phr_ce_len = 0;
    }
2017

2018
    // check for UL bandwidth requests and add SR control element
2019

2020
    // check for UL bandwidth requests and add SR control element
2021

2022
    // Check for DCCH first
2023
// TO DO: Multiplex in the order defined by the logical channel prioritization
2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069
    for (lcid = DCCH;
	 (lcid < MAX_NUM_LCID) && (is_all_lcid_processed == FALSE); lcid++)
    {
	if (UE_mac_inst[module_idP].scheduling_info.LCID_status[lcid] ==
	    LCID_NOT_EMPTY) {

	    lcid_rlc_pdu_count = 0;
	    is_lcid_processed = FALSE;
	    lcid_buffer_occupancy_old =
		mac_rlc_get_buffer_occupancy_ind(module_idP,
						 UE_mac_inst[module_idP].
						 crnti, eNB_index, frameP,
						 subframe, ENB_FLAG_NO,
						 lcid);

	    lcid_buffer_occupancy_new = lcid_buffer_occupancy_old;

	    AssertFatal(lcid_buffer_occupancy_new ==
			UE_mac_inst[module_idP].
			scheduling_info.LCID_buffer_remain[lcid],
			"LCID=%d RLC has BO %d bytes but MAC has stored %d bytes\n",
			lcid, lcid_buffer_occupancy_new,
			UE_mac_inst[module_idP].
			scheduling_info.LCID_buffer_remain[lcid]);

	    AssertFatal(lcid_buffer_occupancy_new <=
			UE_mac_inst[module_idP].
			scheduling_info.BSR_bytes[UE_mac_inst[module_idP].
						  scheduling_info.LCGID
						  [lcid]],
			"LCID=%d RLC has more BO %d bytes than BSR = %d bytes\n",
			lcid, lcid_buffer_occupancy_new,
			UE_mac_inst[module_idP].
			scheduling_info.BSR_bytes[UE_mac_inst[module_idP].
						  scheduling_info.LCGID
						  [lcid]]);


	    //Multiplex all available DCCH RLC PDUs considering to multiplex the last PDU each time for maximize the data
	    //Adjust at the end of the loop
	    while ((!is_lcid_processed) && (lcid_buffer_occupancy_new)
		   && (bsr_len + phr_len + total_rlc_pdu_header_len +
		       sdu_length_total + MIN_MAC_HDR_RLC_SIZE <= buflen))
	    {

		// Workaround for issue in OAI eNB or EPC which are not able to process SRB2 message multiplexed with SRB1 on the same MAC PDU
2070
		if (( get_softmodem_params()->usim_test == 0) && (lcid == DCCH1)
2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098
		    && (lcid_rlc_pdu_count == 0) && (num_sdus)) {

		    // Skip SRB2 multiplex if at least one SRB1 SDU is already multiplexed
		    break;
		}

		buflen_remain =
		    buflen - (bsr_len + phr_len +
			      total_rlc_pdu_header_len + sdu_length_total +
			      1);


		LOG_D(MAC,
		      "[UE %d] Frame %d : UL-DXCH -> ULSCH, RLC %d has %d bytes to "
		      "send (Transport Block size %d BSR size=%d PHR=%d SDU Length Total %d , mac header len %d BSR byte before Tx=%d)\n",
		      module_idP, frameP, lcid, lcid_buffer_occupancy_new,
		      buflen, bsr_len, phr_len, sdu_length_total,
		      total_rlc_pdu_header_len,
		      UE_mac_inst[module_idP].
		      scheduling_info.BSR_bytes[UE_mac_inst[module_idP].
						scheduling_info.LCGID
						[lcid]]);


		sdu_lengths[num_sdus] = mac_rlc_data_req(module_idP,
							 UE_mac_inst
							 [module_idP].
							 crnti, eNB_index,
2099 2100 2101 2102 2103
							 frameP,
							 ENB_FLAG_NO,
							 MBMS_FLAG_NO,
							 lcid,
							 buflen_remain,
2104
							 (char *)&ulsch_buff[sdu_length_total]
2105
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
2106 2107 2108 2109 2110
							 ,0,
                              0
#endif
                         	 );

2111 2112 2113 2114 2115 2116 2117 2118 2119 2120


		AssertFatal(buflen_remain >= sdu_lengths[num_sdus],
			    "LCID=%d RLC has segmented %d bytes but MAC has max=%d\n",
			    lcid, sdu_lengths[num_sdus], buflen_remain);


		if (sdu_lengths[num_sdus]) {
		    sdu_length_total += sdu_lengths[num_sdus];
		    sdu_lcids[num_sdus] = lcid;
2121
		    LOG_I(MAC,
2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145
			  "[UE %d] TX Multiplex RLC PDU TX Got %d bytes for LcId%d\n",
			  module_idP, sdu_lengths[num_sdus], lcid);

		    if (buflen ==
			(bsr_len + phr_len + total_rlc_pdu_header_len +
			 sdu_length_total + 1)) {
			//No more remaining TBS after this PDU
			//exit the function
			rlc_pdu_header_len_last = 1;
			is_lcid_processed = TRUE;
			is_all_lcid_processed = TRUE;
		    } else {
			rlc_pdu_header_len_last =
			    (sdu_lengths[num_sdus] > 128) ? 3 : 2;

			//Change to 1 byte if it does not fit in the TBS, ie last PDU
			if (buflen <=
			    (bsr_len + phr_len + total_rlc_pdu_header_len +
			     rlc_pdu_header_len_last + sdu_length_total)) {
			    rlc_pdu_header_len_last = 1;
			    is_lcid_processed = TRUE;
			    is_all_lcid_processed = TRUE;
			}
		    }
2146

2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205
		    //Update number of SDU
		    num_sdus++;

		    //Update total MAC Header size for RLC PDUs and save last one
		    total_rlc_pdu_header_len += rlc_pdu_header_len_last;

		    lcid_rlc_pdu_count++;
		} else {
		    /* avoid infinite loop ... */
		    is_lcid_processed = TRUE;
		}

		/* Get updated BO after multiplexing this PDU */
		lcid_buffer_occupancy_new =
		    mac_rlc_get_buffer_occupancy_ind(module_idP,
						     UE_mac_inst
						     [module_idP].crnti,
						     eNB_index, frameP,
						     subframe, ENB_FLAG_NO,
						     lcid);

		is_lcid_processed = (is_lcid_processed)
		    || (lcid_buffer_occupancy_new <= 0);
	    }

	    //Update Buffer remain and BSR bytes after transmission

	    AssertFatal(lcid_buffer_occupancy_new <=
			lcid_buffer_occupancy_old,
			"MAC UE Tx error : Buffer Occupancy After Tx=%d greater than before=%d BO! for LCID=%d RLC PDU nb=%d Frame %d Subrame %d\n",
			lcid_buffer_occupancy_new,
			lcid_buffer_occupancy_old, lcid,
			lcid_rlc_pdu_count, frameP, subframe);

	    UE_mac_inst[module_idP].scheduling_info.
		LCID_buffer_remain[lcid] = lcid_buffer_occupancy_new;
	    UE_mac_inst[module_idP].
		scheduling_info.BSR_bytes[UE_mac_inst[module_idP].
					  scheduling_info.LCGID[lcid]] +=
		(lcid_buffer_occupancy_new - lcid_buffer_occupancy_old);

	    //Update the number of LCGID with data as BSR shall reflect status after BSR transmission
	    if ((num_lcg_id_with_data > 1)
		&& (UE_mac_inst[module_idP].
		    scheduling_info.BSR_bytes[UE_mac_inst[module_idP].
					      scheduling_info.LCGID[lcid]]
		    == 0)) {
		num_lcg_id_with_data--;
		// Change BSR size to BSR SHORT if num_lcg_id_with_data becomes to 1
		if ((bsr_len) && (num_lcg_id_with_data == 1)) {
		    bsr_ce_len = sizeof(BSR_SHORT);
		    bsr_len = bsr_ce_len + bsr_header_len;
		}
	    }


	    UE_mac_inst[module_idP].scheduling_info.LCID_status[lcid] =
		LCID_EMPTY;
	}
2206
    }
hbilel's avatar
hbilel committed
2207 2208 2209



2210 2211 2212 2213 2214 2215 2216 2217 2218
    // Compute BSR Values and update Nb LCGID with data after multiplexing
    num_lcg_id_with_data = 0;
    lcg_id_bsr_trunc = 0;
    for (lcg_id = 0; lcg_id < MAX_NUM_LCGID; lcg_id++) {
	UE_mac_inst[module_idP].scheduling_info.BSR[lcg_id] =
	    locate_BsrIndexByBufferSize(BSR_TABLE, BSR_TABLE_SIZE,
					UE_mac_inst
					[module_idP].scheduling_info.
					BSR_bytes[lcg_id]);
fnabet's avatar
fnabet committed
2219

2220 2221 2222 2223 2224
	if (UE_mac_inst[module_idP].scheduling_info.BSR_bytes[lcg_id]) {
	    num_lcg_id_with_data++;
	    lcg_id_bsr_trunc = lcg_id;
	}
    }
2225

hbilel's avatar
hbilel committed
2226

2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247
    if (bsr_ce_len) {
	//Print updated BSR when sent
	LOG_D(MAC,
	      "[UE %d] Remaining Buffer after Tx frame%d subframe %d nb LCG =%d Bytes for LCG0=%d LCG1=%d LCG2=%d LCG3=%d BSR Trigger status =%d TBS=%d\n",
	      module_idP, frameP, subframe, num_lcg_id_with_data,
	      UE_mac_inst[module_idP].scheduling_info.BSR_bytes[0],
	      UE_mac_inst[module_idP].scheduling_info.BSR_bytes[1],
	      UE_mac_inst[module_idP].scheduling_info.BSR_bytes[2],
	      UE_mac_inst[module_idP].scheduling_info.BSR_bytes[3],
	      UE_mac_inst[module_idP].BSR_reporting_active, buflen);

	LOG_D(MAC,
	      "[UE %d] Frame %d Subframe %d TX BSR Regular or Periodic size=%d BSR0=%d BSR1=%d BSR2=%d BSR3=%d\n",
	      module_idP, frameP, subframe, bsr_ce_len,
	      UE_mac_inst[module_idP].scheduling_info.BSR[0],
	      UE_mac_inst[module_idP].scheduling_info.BSR[1],
	      UE_mac_inst[module_idP].scheduling_info.BSR[2],
	      UE_mac_inst[module_idP].scheduling_info.BSR[3]);
    }
    // build PHR and update the timers
    if (phr_ce_len == sizeof(POWER_HEADROOM_CMD)) {
2248
    	if(nfapi_mode ==3){
2249
    		//Substitute with a static value for the MAC layer abstraction (phy_stub mode)
2250 2251 2252 2253 2254 2255 2256
    		phr_p->PH = 40;
    	}
    	else{
    		phr_p->PH = get_phr_mapping(module_idP, CC_id, eNB_index);
    	}


2257 2258 2259 2260 2261 2262 2263 2264 2265
	phr_p->R = 0;
	LOG_D(MAC,
	      "[UE %d] Frame %d report PHR with mapping (%d->%d) for LCID %d\n",
	      module_idP, frameP, get_PHR(module_idP, CC_id, eNB_index),
	      phr_p->PH, POWER_HEADROOM);
	update_phr(module_idP, CC_id);
    } else {
	phr_p = NULL;
    }
2266

2267 2268
    LOG_T(MAC, "[UE %d] Frame %d: bsr s %p bsr_l %p, phr_p %p\n",
	  module_idP, frameP, bsr_s, bsr_l, phr_p);
hbilel's avatar
hbilel committed
2269

2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284
    // Check BSR padding: it is done after PHR according to Logical Channel Prioritization order
    // Check for max padding size, ie MAC Hdr for last RLC PDU = 1
    /* For Padding BSR:
       -  if the number of padding bits is equal to or larger than the size of the Short BSR plus its subheader but smaller than the size of the Long BSR plus its subheader:
       -  if more than one LCG has data available for transmission in the TTI where the BSR is transmitted: report Truncated BSR of the LCG with the highest priority logical channel with data available for transmission;
       -  else report Short BSR.
       -  else if the number of padding bits is equal to or larger than the size of the Long BSR plus its subheader, report Long BSR.
     */
    if (sdu_length_total) {
	padding_len =
	    buflen - (bsr_len + phr_len + total_rlc_pdu_header_len -
		      rlc_pdu_header_len_last + sdu_length_total + 1);
    } else {
	padding_len = buflen - (bsr_len + phr_len);
    }
2285 2286


2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396
    if ((padding_len) && (bsr_len == 0)) {
	/* if the number of padding bits is equal to or larger than the size of the Long BSR plus its subheader, report Long BSR */
	if (padding_len >= (1 + BSR_LONG_SIZE)) {
	    bsr_ce_len = BSR_LONG_SIZE;
	    bsr_header_len = 1;
	    // Trigger BSR Padding
	    UE_mac_inst[module_idP].BSR_reporting_active |=
		BSR_TRIGGER_PADDING;


	} else if (padding_len >= (1 + sizeof(BSR_SHORT))) {
	    bsr_ce_len = sizeof(BSR_SHORT);
	    bsr_header_len = 1;

	    if (num_lcg_id_with_data > 1) {
		// REPORT TRUNCATED BSR
		//Get LCGID of highest priority LCID with data
		for (lcid = DCCH; lcid < MAX_NUM_LCID; lcid++) {
		    if (UE_mac_inst[module_idP].
			logicalChannelConfig[lcid] != NULL) {
			lcg_id =
			    UE_mac_inst[module_idP].scheduling_info.
			    LCGID[lcid];

			if ((lcg_id < MAX_NUM_LCGID)
			    && (UE_mac_inst[module_idP].
				scheduling_info.BSR_bytes[lcg_id])
			    &&
			    (UE_mac_inst[module_idP].logicalChannelConfig
			     [lcid]->ul_SpecificParameters->priority <=
			     highest_priority)) {
			    highest_priority =
				UE_mac_inst[module_idP].
				logicalChannelConfig[lcid]->
				ul_SpecificParameters->priority;
			    lcg_id_bsr_trunc = lcg_id;
			}
		    }
		}
	    } else {
		//Report SHORT BSR, clear bsr_t
		bsr_t = NULL;
	    }

	    // Trigger BSR Padding
	    UE_mac_inst[module_idP].BSR_reporting_active |=
		BSR_TRIGGER_PADDING;
	}
	bsr_len = bsr_header_len + bsr_ce_len;
    }
    //Fill BSR Infos
    if (bsr_ce_len == 0) {
	bsr_s = NULL;
	bsr_l = NULL;
	bsr_t = NULL;
    } else if (bsr_ce_len == BSR_LONG_SIZE) {
	bsr_s = NULL;
	bsr_t = NULL;
	bsr_l->Buffer_size0 =
	    UE_mac_inst[module_idP].scheduling_info.BSR[LCGID0];
	bsr_l->Buffer_size1 =
	    UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1];
	bsr_l->Buffer_size2 =
	    UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2];
	bsr_l->Buffer_size3 =
	    UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3];

	LOG_D(MAC,
	      "[UE %d] Frame %d subframe %d BSR Trig=%d report long BSR (level LCGID0 %d,level LCGID1 %d,level LCGID2 %d,level LCGID3 %d)\n",
	      module_idP, frameP, subframe,
	      UE_mac_inst[module_idP].BSR_reporting_active,
	      UE_mac_inst[module_idP].scheduling_info.BSR[LCGID0],
	      UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1],
	      UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2],
	      UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3]);

    } else if (bsr_ce_len == sizeof(BSR_SHORT)) {
	bsr_l = NULL;
	if ((bsr_t != NULL)
	    && (UE_mac_inst[module_idP].BSR_reporting_active &
		BSR_TRIGGER_PADDING)) {
	    //Truncated BSR
	    bsr_s = NULL;
	    bsr_t->LCGID = lcg_id_bsr_trunc;
	    bsr_t->Buffer_size =
		UE_mac_inst[module_idP].scheduling_info.
		BSR[lcg_id_bsr_trunc];

	    LOG_D(MAC,
		  "[UE %d] Frame %d subframe %d BSR Trig=%d report TRUNCATED BSR with level %d for LCGID %d\n",
		  module_idP, frameP, subframe,
		  UE_mac_inst[module_idP].BSR_reporting_active,
		  UE_mac_inst[module_idP].
		  scheduling_info.BSR[lcg_id_bsr_trunc], lcg_id_bsr_trunc);

	} else {
	    bsr_t = NULL;
	    bsr_s->LCGID = lcg_id_bsr_trunc;
	    bsr_s->Buffer_size =
		UE_mac_inst[module_idP].scheduling_info.
		BSR[lcg_id_bsr_trunc];

	    LOG_D(MAC,
		  "[UE %d] Frame %d subframe %d BSR Trig=%d report SHORT BSR with level %d for LCGID %d\n",
		  module_idP, frameP, subframe,
		  UE_mac_inst[module_idP].BSR_reporting_active,
		  UE_mac_inst[module_idP].
		  scheduling_info.BSR[lcg_id_bsr_trunc], lcg_id_bsr_trunc);
	}
    }
hbilel's avatar
hbilel committed
2397 2398 2399
// 1-bit padding or 2-bit padding  special padding subheader
// Check for max padding size, ie MAC Hdr for last RLC PDU = 1
    if (sdu_length_total) {
2400 2401 2402 2403 2404
	padding_len =
	    buflen - (bsr_len + phr_len + total_rlc_pdu_header_len -
		      rlc_pdu_header_len_last + sdu_length_total + 1);
    } else {
	padding_len = buflen - (bsr_len + phr_len);
2405 2406
    }

2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433
    if (padding_len <= 2) {
	short_padding = padding_len;
	// only add padding header
	post_padding = 0;
	//update total MAC Hdr size for RLC data
	if (sdu_length_total) {
	    total_rlc_pdu_header_len =
		total_rlc_pdu_header_len - rlc_pdu_header_len_last + 1;
	    rlc_pdu_header_len_last = 1;
	}
    } else if (sdu_length_total) {
	post_padding =
	    buflen - (bsr_len + phr_len + total_rlc_pdu_header_len +
		      sdu_length_total + 1);
	// If by adding MAC Hdr for last RLC PDU the padding is 0 then set MAC Hdr for last RLC PDU = 1 and compute 1 or 2 byte padding
	if (post_padding == 0) {
	    total_rlc_pdu_header_len -= rlc_pdu_header_len_last;
	    padding_len =
		buflen - (bsr_len + phr_len + total_rlc_pdu_header_len +
			  sdu_length_total + 1);
	    short_padding = padding_len;
	    total_rlc_pdu_header_len++;
	}
    } else {
	if (padding_len == buflen) {	// nona mac pdu
	    *access_mode = CANCELED_ACCESS;
	}
2434

2435
	short_padding = 0;
2436

2437 2438 2439 2440
	post_padding =
	    buflen - (bsr_len + phr_len + total_rlc_pdu_header_len +
		      sdu_length_total + 1);
    }
2441

2442 2443
    // Generate header
    // if (num_sdus>0) {
2444

2445 2446 2447 2448 2449 2450 2451 2452 2453 2454
    payload_offset = generate_ulsch_header(ulsch_buffer,	// mac header
					   num_sdus,	// num sdus
					   short_padding,	// short pading
					   sdu_lengths,	// sdu length
					   sdu_lcids,	// sdu lcid
					   phr_p,	// power headroom
					   NULL,	// crnti
					   bsr_t,	// truncated bsr
					   bsr_s,	// short bsr
					   bsr_l, post_padding);	// long_bsr
2455

2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496
    LOG_D(MAC,
	  "[UE %d] Generate header :bufflen %d  sdu_length_total %d, num_sdus %d, sdu_lengths[0] %d, sdu_lcids[0] %d => payload offset %d,  total_rlc_pdu_header_len %d, padding %d,post_padding %d, bsr len %d, phr len %d, reminder %d \n",
	  module_idP, buflen, sdu_length_total, num_sdus, sdu_lengths[0],
	  sdu_lcids[0], payload_offset, total_rlc_pdu_header_len,
	  short_padding, post_padding, bsr_len, phr_len,
	  buflen - sdu_length_total - payload_offset);
    // cycle through SDUs and place in ulsch_buffer
    if (sdu_length_total) {
	memcpy(&ulsch_buffer[payload_offset], ulsch_buff,
	       sdu_length_total);
    }
    // fill remainder of DLSCH with random data
    if (post_padding) {
	for (j = 0; j < (buflen - sdu_length_total - payload_offset); j++) {
	    ulsch_buffer[payload_offset + sdu_length_total + j] =
		(char) (taus() & 0xff);
	}
    }
    LOG_D(MAC,
	  "[UE %d][SR] Gave SDU to PHY, clearing any scheduling request\n",
	  module_idP);
    UE_mac_inst[module_idP].scheduling_info.SR_pending = 0;
    UE_mac_inst[module_idP].scheduling_info.SR_COUNTER = 0;

    /* Actions when a BSR is sent */
    if (bsr_ce_len) {
	LOG_D(MAC,
	      "[UE %d] MAC BSR Sent !! bsr (ce%d,hdr%d) buff_len %d\n",
	      module_idP, bsr_ce_len, bsr_header_len, buflen);

	// Reset ReTx BSR Timer
	UE_mac_inst[module_idP].scheduling_info.retxBSR_SF =
	    get_sf_retxBSRTimer(UE_mac_inst[module_idP].
				scheduling_info.retxBSR_Timer);

	LOG_D(MAC, "[UE %d] MAC ReTx BSR Timer Reset =%d\n", module_idP,
	      UE_mac_inst[module_idP].scheduling_info.retxBSR_SF);

	// Reset Periodic Timer except when BSR is truncated
	if ((bsr_t == NULL)
	    && (UE_mac_inst[module_idP].scheduling_info.
2497
		periodicBSR_Timer != LTE_PeriodicBSR_Timer_r12_infinity)) {
2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510
	    UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF =
		get_sf_periodicBSRTimer(UE_mac_inst
					[module_idP].scheduling_info.
					periodicBSR_Timer);

	    LOG_D(MAC, "[UE %d] MAC Periodic BSR Timer Reset =%d\n",
		  module_idP,
		  UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF);

	}
	// Reset BSR Trigger flags
	UE_mac_inst[module_idP].BSR_reporting_active = BSR_TRIGGER_NONE;
    }
2511

2512 2513
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_GET_SDU, VCD_FUNCTION_OUT);
gabrielC's avatar
gabrielC committed
2514
#if UE_TIMING_TRACE
2515
    stop_meas(&UE_mac_inst[module_idP].tx_ulsch_sdu);
gabrielC's avatar
gabrielC committed
2516
#endif
2517 2518

    if (opt_enabled) {
laurent's avatar
laurent committed
2519
	trace_pdu(DIRECTION_UPLINK, ulsch_buffer, buflen, module_idP, WS_C_RNTI,
2520 2521 2522 2523 2524 2525 2526 2527
		  UE_mac_inst[module_idP].crnti,
		  UE_mac_inst[module_idP].txFrame,
		  UE_mac_inst[module_idP].txSubframe, 0, 0);
	LOG_D(OPT,
	      "[UE %d][ULSCH] Frame %d subframe %d trace pdu for rnti %x  with size %d\n",
	      module_idP, frameP, subframe, UE_mac_inst[module_idP].crnti,
	      buflen);
    }
2528 2529
}

2530 2531


2532
//------------------------------------------------------------------------------
2533 2534 2535 2536 2537 2538 2539
// called at each subframe
// Performs :
// 1. Trigger PDCP every 5ms
// 2. Call RRC for link status return to PHY
// 3. Perform SR/BSR procedures for scheduling feedback
// 4. Perform PHR procedures

2540
UE_L2_STATE_t
2541 2542 2543 2544 2545 2546 2547
ue_scheduler(const module_id_t module_idP,
	     const frame_t rxFrameP,
	     const sub_frame_t rxSubframeP,
	     const frame_t txFrameP,
	     const sub_frame_t txSubframeP,
	     const lte_subframe_t directionP,
	     const uint8_t eNB_indexP, const int CC_id)
2548
//------------------------------------------------------------------------------
2549
{
2550 2551 2552 2553 2554 2555
    int lcid;			// lcid index
    int TTI = 1;
    int bucketsizeduration = -1;
    int bucketsizeduration_max = -1;
    // mac_rlc_status_resp_t rlc_status[MAX_NUM_LCGID]; // 4
    // int8_t lcg_id;
2556 2557
    struct LTE_RACH_ConfigCommon *rach_ConfigCommon =
	(struct LTE_RACH_ConfigCommon *) NULL;
2558
    protocol_ctxt_t ctxt;
GabrirelCouturier's avatar
GabrirelCouturier committed
2559

2560
#if defined(ENABLE_ITTI)
2561 2562
    MessageDef *msg_p;
    int result;
2563
#endif
gabrielC's avatar
gabrielC committed
2564
#if UE_TIMING_TRACE
2565
    start_meas(&UE_mac_inst[module_idP].ue_scheduler);
gabrielC's avatar
gabrielC committed
2566
#endif
2567 2568
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_IN);
2569

2570 2571 2572
    PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, ENB_FLAG_NO,
				   UE_mac_inst[module_idP].crnti, txFrameP,
				   txSubframeP, eNB_indexP);
2573
#if defined(ENABLE_ITTI)
2574 2575 2576 2577
    if(module_idP == 0){
      do {
	  // Checks if a message has been sent to MAC sub-task
	  itti_poll_msg(TASK_MAC_UE, &msg_p);
2578

2579
	    if (msg_p != NULL) {
2580

2581 2582 2583 2584 2585 2586 2587
	      switch (ITTI_MSG_ID(msg_p)) {
	      case RRC_MAC_CCCH_DATA_REQ:
		  LOG_I(MAC,
		        "Received %s from %s: instance %d, frameP %d, eNB_index %d\n",
		        ITTI_MSG_NAME(msg_p), ITTI_MSG_ORIGIN_NAME(msg_p), ITTI_MSG_INSTANCE(msg_p),
		        RRC_MAC_CCCH_DATA_REQ(msg_p).frame,
		        RRC_MAC_CCCH_DATA_REQ(msg_p).enb_index);
2588

2589 2590
		  // TODO process CCCH data req.
		  break;
2591

2592

2593 2594 2595 2596
	      default:
		  LOG_E(MAC, "Received unexpected message %s\n", ITTI_MSG_NAME(msg_p));
		  break;
	      }
2597

2598 2599 2600
	      result = itti_free(ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
	      AssertFatal(result == EXIT_SUCCESS,
			  "Failed to free memory (%d)!\n", result);
2601
	    }
2602
      }
2603
    while (msg_p != NULL);
2604
    }
2605 2606
#endif

2607 2608 2609 2610
    //Mac_rlc_xface->frameP=frameP;
    //Rrc_xface->Frame_index=Mac_rlc_xface->frameP;
    //if (subframe%5 == 0)
    //LG#ifdef EXMIMO
Y_Tomita's avatar
Y_Tomita committed
2611 2612 2613 2614

    // data to/from NETLINK is treated in pdcp_run.
    // one socket is used in multiple UE's L2 FAPI simulator and
    // only first UE need to do this.
2615 2616 2617
    if(module_idP == 0){
      pdcp_run(&ctxt);
    }
2618 2619 2620 2621 2622
    //#endif
    UE_mac_inst[module_idP].txFrame = txFrameP;
    UE_mac_inst[module_idP].txSubframe = txSubframeP;
    UE_mac_inst[module_idP].rxFrame = rxFrameP;
    UE_mac_inst[module_idP].rxSubframe = rxSubframeP;
2623 2624

#ifdef CELLULAR
2625
    rrc_rx_tx_ue(module_idP, txFrameP, 0, eNB_indexP);
2626
#else
2627

2628
    switch (rrc_rx_tx_ue(&ctxt, eNB_indexP, CC_id)) {
2629 2630
    case RRC_OK:
	break;
2631

2632 2633 2634 2635
    case RRC_ConnSetup_failed:
	LOG_E(MAC, "RRCConnectionSetup failed, returning to IDLE state\n");
	VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	    (VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_OUT);
gabrielC's avatar
gabrielC committed
2636
#if UE_TIMING_TRACE
2637
	stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
gabrielC's avatar
gabrielC committed
2638
#endif
2639 2640
	return (CONNECTION_LOST);
	break;
2641

2642 2643 2644 2645
    case RRC_PHY_RESYNCH:
	LOG_E(MAC, "RRC Loss of synch, returning PHY_RESYNCH\n");
	VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	    (VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_OUT);
gabrielC's avatar
gabrielC committed
2646
#if UE_TIMING_TRACE
2647
	stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
gabrielC's avatar
gabrielC committed
2648
#endif
2649 2650 2651
	return (PHY_RESYNCH);

    case RRC_Handover_failed:
2652
	LOG_I(MAC, "Handover failure for UE %d eNB_index %d\n", module_idP,
2653 2654 2655
	      eNB_indexP);
	//Invalid...need to add another MAC UE state for re-connection procedure
	phy_config_afterHO_ue(module_idP, 0, eNB_indexP,
2656
			      (LTE_MobilityControlInfo_t *) NULL, 1);
2657 2658 2659 2660 2661 2662 2663 2664
	//return(3);
	break;

    case RRC_HO_STARTED:
	LOG_I(MAC,
	      "RRC handover, Instruct PHY to start the contention-free PRACH and synchronization\n");
	VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	    (VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_OUT);
gabrielC's avatar
gabrielC committed
2665
#if UE_TIMING_TRACE
2666
	stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
gabrielC's avatar
gabrielC committed
2667
#endif
2668
	return (PHY_HO_PRACH);
2669

2670 2671 2672
    default:
	break;
    }
2673

2674
#endif
2675

2676 2677
    // Check Contention resolution timer (put in a function later)
    if (UE_mac_inst[module_idP].RA_contention_resolution_timer_active == 1) {
2678

2679 2680 2681 2682 2683 2684 2685 2686 2687
	if (UE_mac_inst[module_idP].radioResourceConfigCommon) {
	    rach_ConfigCommon =
		&UE_mac_inst[module_idP].
		radioResourceConfigCommon->rach_ConfigCommon;
	} else {
	    LOG_E(MAC, "FATAL: radioResourceConfigCommon is NULL!!!\n");
	    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
		(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER,
		 VCD_FUNCTION_OUT);
2688

2689 2690
	    stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
	    AssertFatal(1 == 0, "");
2691

gabrielC's avatar
gabrielC committed
2692
#if UE_TIMING_TRACE
2693
	    stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
gabrielC's avatar
gabrielC committed
2694
#endif
2695

2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718
	    //return(RRC_OK);
	}

	LOG_I(MAC, "Frame %d: Contention resolution timer %d/%ld\n",
	      txFrameP,
	      UE_mac_inst[module_idP].RA_contention_resolution_cnt,
	      ((1 +
		rach_ConfigCommon->
		ra_SupervisionInfo.mac_ContentionResolutionTimer) << 3));

	UE_mac_inst[module_idP].RA_contention_resolution_cnt++;

	if (UE_mac_inst[module_idP].RA_contention_resolution_cnt ==
	    ((1 +
	      rach_ConfigCommon->
	      ra_SupervisionInfo.mac_ContentionResolutionTimer) << 3)) {
	    UE_mac_inst[module_idP].RA_active = 0;
	    UE_mac_inst[module_idP].RA_contention_resolution_timer_active =
		0;
	    // Signal PHY to quit RA procedure
	    LOG_E(MAC,
		  "Module id %u Contention resolution timer expired, RA failed\n",
		  module_idP);
2719 2720
	    if(nfapi_mode == 3) { // phy_stub mode
	    	// Modification for phy_stub mode operation here. We only need to make sure that the ue_mode is back to
2721 2722 2723 2724 2725 2726 2727 2728 2729
	    	// PRACH state.
	    	LOG_I(MAC, "nfapi_mode3: Setting UE_mode to PRACH 2 \n");
	    	UE_mac_inst[module_idP].UE_mode[eNB_indexP] = PRACH;
	    	//ra_failed(module_idP,CC_id,eNB_index);UE_mac_inst[module_idP].RA_contention_resolution_timer_active = 0;
	    	}
	    else{
	    	ra_failed(module_idP, CC_id, eNB_indexP);
	    }
	    //ra_failed(module_idP, 0, eNB_indexP);
2730
	}
2731
    }
2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773
    // Get RLC status info and update Bj for all lcids that are active
    for (lcid = DCCH; lcid < MAX_NUM_LCID; lcid++) {
	if (UE_mac_inst[module_idP].logicalChannelConfig[lcid]) {
	    // meausre the Bj
	    if ((directionP == SF_UL)
		&& (UE_mac_inst[module_idP].scheduling_info.Bj[lcid] >= 0)) {
		if (UE_mac_inst[module_idP].
		    logicalChannelConfig[lcid]->ul_SpecificParameters) {
		    bucketsizeduration =
			UE_mac_inst[module_idP].logicalChannelConfig
			[lcid]->ul_SpecificParameters->prioritisedBitRate *
			TTI;
		    bucketsizeduration_max =
			get_ms_bucketsizeduration(UE_mac_inst
						  [module_idP].logicalChannelConfig
						  [lcid]->ul_SpecificParameters->bucketSizeDuration);
		} else {
		    LOG_E(MAC,
			  "[UE %d] lcid %d, NULL ul_SpecificParameters\n",
			  module_idP, lcid);
		    AssertFatal(1 == 0, "");
		}

		if (UE_mac_inst[module_idP].scheduling_info.Bj[lcid] >
		    bucketsizeduration_max) {
		    UE_mac_inst[module_idP].scheduling_info.Bj[lcid] =
			bucketsizeduration_max;
		} else {
		    UE_mac_inst[module_idP].scheduling_info.Bj[lcid] =
			bucketsizeduration;
		}
	    }


	    /*
	       if (lcid == DCCH) {    
	       LOG_D(MAC,"[UE %d][SR] Frame %d subframe %d Pending data for SRB1=%d for LCGID %d \n",                  
	       module_idP, txFrameP,txSubframeP,UE_mac_inst[module_idP].scheduling_info.BSR[UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]],                  
	       //         UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]);
	       }
	     */
	}
2774
    }
GabrirelCouturier's avatar
GabrirelCouturier committed
2775

2776
    // Call BSR procedure as described in Section 5.4.5 in 36.321
2777

2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810
    // First check ReTxBSR Timer because it is always configured
    // Decrement ReTxBSR Timer if it is running and not null
    if ((UE_mac_inst[module_idP].scheduling_info.retxBSR_SF !=
	 MAC_UE_BSR_TIMER_NOT_RUNNING)
	&& (UE_mac_inst[module_idP].scheduling_info.retxBSR_SF != 0)) {
	UE_mac_inst[module_idP].scheduling_info.retxBSR_SF--;
    }
    // Decrement Periodic Timer if it is running and not null
    if ((UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF !=
	 MAC_UE_BSR_TIMER_NOT_RUNNING)
	&& (UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF != 0)) {
	UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF--;
    }
    //Check whether Regular BSR is triggered
    if (update_bsr(module_idP, txFrameP, txSubframeP, eNB_indexP) == TRUE) {
	// call SR procedure to generate pending SR and BSR for next PUCCH/PUSCH TxOp.  This should implement the procedures
	// outlined in Sections 5.4.4 an 5.4.5 of 36.321
	UE_mac_inst[module_idP].scheduling_info.SR_pending = 1;
	// Regular BSR trigger
	UE_mac_inst[module_idP].BSR_reporting_active |=
	    BSR_TRIGGER_REGULAR;
	LOG_D(MAC,
	      "[UE %d][BSR] Regular BSR Triggered Frame %d subframe %d SR for PUSCH is pending\n",
	      module_idP, txFrameP, txSubframeP);
    }
    // UE has no valid phy config dedicated ||  no valid/released  SR
    if ((UE_mac_inst[module_idP].physicalConfigDedicated == NULL)) {
	// cancel all pending SRs
	UE_mac_inst[module_idP].scheduling_info.SR_pending = 0;
	UE_mac_inst[module_idP].ul_active = 0;
	LOG_T(MAC, "[UE %d] Release all SRs \n", module_idP);
	VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	    (VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_OUT);
gabrielC's avatar
gabrielC committed
2811
#if UE_TIMING_TRACE
2812
	stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
gabrielC's avatar
gabrielC committed
2813
#endif
2814 2815
	return (CONNECTION_OK);
    }
2816

2817 2818 2819 2820
    if ((UE_mac_inst[module_idP].
	 physicalConfigDedicated->schedulingRequestConfig == NULL)
	|| (UE_mac_inst[module_idP].
	    physicalConfigDedicated->schedulingRequestConfig->present ==
2821
	    LTE_SchedulingRequestConfig_PR_release)) {
2822

2823
	// initiate RA with CRNTI included in msg3 (no contention) as descibed in 36.321 sec 5.1.5
2824

2825 2826 2827 2828 2829 2830 2831
	// cancel all pending SRs
	UE_mac_inst[module_idP].scheduling_info.SR_pending = 0;
	UE_mac_inst[module_idP].ul_active = 0;
	LOG_T(MAC, "[UE %d] Release all SRs \n", module_idP);
    }
    // Put this in a function
    // Call PHR procedure as described in Section 5.4.6 in 36.321
2832
    if (UE_mac_inst[module_idP].PHR_state == LTE_MAC_MainConfig__phr_Config_PR_setup) {	// normal operation
2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865

	if (UE_mac_inst[module_idP].PHR_reconfigured == 1) {	// upon (re)configuration of the power headroom reporting functionality by upper layers
	    UE_mac_inst[module_idP].PHR_reporting_active = 1;
	    UE_mac_inst[module_idP].PHR_reconfigured = 0;
	} else {
	    //LOG_D(MAC,"PHR normal operation %d active %d \n", UE_mac_inst[module_idP].scheduling_info.periodicPHR_SF, UE_mac_inst[module_idP].PHR_reporting_active);
	    if ((UE_mac_inst[module_idP].scheduling_info.prohibitPHR_SF <=
		 0)
		&&
		((get_PL(module_idP, 0, eNB_indexP) <
		  UE_mac_inst[module_idP].scheduling_info.
		  PathlossChange_db)
		 || (UE_mac_inst[module_idP].power_backoff_db[eNB_indexP] >
		     UE_mac_inst[module_idP].
		     scheduling_info.PathlossChange_db)))
		// trigger PHR and reset the timer later when the PHR report is sent
	    {
		UE_mac_inst[module_idP].PHR_reporting_active = 1;
	    } else if (UE_mac_inst[module_idP].PHR_reporting_active == 0) {
		UE_mac_inst[module_idP].scheduling_info.prohibitPHR_SF--;
	    }

	    if (UE_mac_inst[module_idP].scheduling_info.periodicPHR_SF <=
		0)
		// trigger PHR and reset the timer later when the PHR report is sent
	    {
		UE_mac_inst[module_idP].PHR_reporting_active = 1;
	    } else if (UE_mac_inst[module_idP].PHR_reporting_active == 0) {
		UE_mac_inst[module_idP].scheduling_info.periodicPHR_SF--;
	    }
	}
    } else {			// release / nothing
	UE_mac_inst[module_idP].PHR_reporting_active = 0;	// release PHR
2866
    }
2867

2868 2869 2870
    //If the UE has UL resources allocated for new transmission for this TTI here:
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
	(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_OUT);
gabrielC's avatar
gabrielC committed
2871 2872 2873
#if UE_TIMING_TRACE
    stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
#endif
2874
    return (CONNECTION_OK);
2875 2876 2877 2878
}

// to be improved
#ifdef CBA
2879
extern int cba_backoff;
2880 2881
double uniform_rngen(int min, int max)
{
2882 2883
    double random = (double) taus() / ((double) 0xffffffff);
    return (max - min) * random + min;
2884 2885
}

2886 2887 2888
int
cba_access(module_id_t module_idP, frame_t frameP,
	   sub_frame_t subframe, uint8_t eNB_index, uint16_t buflen)
2889
{
2890

2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930
    mac_rlc_status_resp_t rlc_status;
    int header_offset = 4;
    int rv = 0;

    /*
       if (( ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1]>0)&&(UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1]<64))   ||
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2]>0)&&(UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2]<64))   ||
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3]>0)&&(UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3]<64)) )
       //  && (UE_mac_inst[module_idP].ul_active == 0) // check if the ul is acrtive
       && (UE_mac_inst[module_idP].cba_last_access[0] <= 0) ) { // backoff
       //  LOG_D(MAC,"[UE %d] Frame %d Subframe %d: the current CBA backoff is %d \n", module_idP, frameP, subframe,
       //  UE_mac_inst[module_idP].cba_last_access[0] );

       UE_mac_inst[module_idP].cba_last_access[0]= round(uniform_rngen(1,40));
       LOG_D(MAC,"[UE %d] Frame %d Subframe %d: start a new CBA backoff  %d UL active state %d \n", module_idP, frameP, subframe,
       UE_mac_inst[module_idP].cba_last_access[0], UE_mac_inst[module_idP].ul_active);

       rv=1;
       } else if (( ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1]> 0 ))   ||
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2]> 0 ))   ||
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3]> 0 )) )
       // && (UE_mac_inst[module_idP].ul_active == 0) // check if the ul is acrtive
       && (UE_mac_inst[module_idP].cba_last_access[0]> 0) ){

       UE_mac_inst[module_idP].cba_last_access[0]-=1;
       LOG_D(MAC,"[UE %d] Frame %d Subframe %d: CBA backoff is decreased by one to %d UL active state %d \n",
       module_idP, frameP, subframe,
       UE_mac_inst[module_idP].cba_last_access[0], UE_mac_inst[module_idP].ul_active);

       } else if (( ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1] == 0 ))   &&
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2] == 0 ))   &&
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3] ==  0 )) )
       && (UE_mac_inst[module_idP].cba_last_access[0]> 0) ){
       UE_mac_inst[module_idP].cba_last_access[0]-=1;
       } */

    if ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID0] > 0)
	&& (UE_mac_inst[module_idP].scheduling_info.BSR[LCGID0] < 64)) {
	return 0;
    }
2931

2932 2933 2934 2935 2936
    if ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1] <= 0) &&
	(UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2] <= 0) &&
	(UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3] <= 0)) {
	return 0;
    }
2937

2938 2939
    if (cba_backoff == 0) {	// apply probablisitc method
	UE_mac_inst[module_idP].cba_last_access[0] = uniform_rngen(0, 1);
2940

2941 2942 2943 2944 2945
	if (uniform_rngen(0, 1) > 0.6) {
	    LOG_I(MAC,
		  "[UE %d] Frame %d Subframe %d: CBA probability-based backoff (%d), UL active state %d \n",
		  module_idP, frameP, subframe, cba_backoff,
		  UE_mac_inst[module_idP].ul_active);
2946

2947 2948
	    rv = 1;
	}
2949
    } else {
2950

2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987
	if (UE_mac_inst[module_idP].cba_last_access[0] <= 0) {
	    UE_mac_inst[module_idP].cba_last_access[0] =
		round(uniform_rngen(1, cba_backoff));

	    LOG_I(MAC,
		  "[UE %d] Frame %d Subframe %d: start a new CBA backoff  %d/%d UL active state %d \n",
		  module_idP, frameP, subframe,
		  UE_mac_inst[module_idP].cba_last_access[0], cba_backoff,
		  UE_mac_inst[module_idP].ul_active);

	    rv = 1;
	    /*
	       rlc_status = mac_rlc_status_ind(module_idP, UE_mac_inst[module_idP].crnti,frameP,ENB_FLAG_NO,MBMS_FLAG_NO, // eNB_index
	       DTCH,
	       0);

	       if ((
	       //  (rlc_status.pdus_in_buffer > 0 )           &&
	       // (UE_mac_inst[module_idP].ul_active == 0)  && // check if the ul is acrtive
	       (rlc_status.head_sdu_is_segmented  == 0 )          &&
	       ((rlc_status.head_sdu_remaining_size_to_send + header_offset ) <= buflen )
	       )){
	       rv = 1;

	       UE_mac_inst[module_idP].cba_last_access[0]= round(uniform_rngen(1,30));
	       LOG_D(MAC,"[UE %d] Frame %d Subframe %d: start a new CBA backoff  %d UL active state %d \n", module_idP, frameP, subframe,
	       UE_mac_inst[module_idP].cba_last_access[0], UE_mac_inst[module_idP].ul_active);
	     */
	} else {
	    UE_mac_inst[module_idP].cba_last_access[0] -= 1;
	    LOG_D(MAC,
		  "[UE %d] Frame %d Subframe %d: wait for backoff to expire (%d) CBA UL active state %d \n",
		  module_idP, frameP, subframe,
		  UE_mac_inst[module_idP].cba_last_access[0],
		  UE_mac_inst[module_idP].ul_active);
	}
    }
2988

2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036
    return rv;
    /*
       if (( ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1]>0)&&(UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1]<64))   ||
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2]>0)&&(UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2]<64))   ||
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3]>0)&&(UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3]<64)) )
       //  && (UE_mac_inst[module_idP].ul_active == 0) // check if the ul is acrtive
       && (UE_mac_inst[module_idP].cba_last_access[0] <= 0) ) {

       UE_mac_inst[module_idP].cba_last_access[0]= round(uniform_rngen(1,cba_backoff));

       LOG_I(MAC,"[UE %d] Frame %d Subframe %d: start a new CBA backoff  %d/%d UL active state %d \n", module_idP, frameP, subframe,
       UE_mac_inst[module_idP].cba_last_access[0], cba_backoff,UE_mac_inst[module_idP].ul_active);

       rv = 1;

       rlc_status = mac_rlc_status_ind(module_idP, UE_mac_inst[module_idP].crnti,frameP,ENB_FLAG_NO,MBMS_FLAG_NO, // eNB_index
       DTCH,
       0);

       if ((
       // (rlc_status.pdus_in_buffer > 0 )           &&
       // (UE_mac_inst[module_idP].ul_active == 0)  && // check if the ul is acrtive
       (rlc_status.head_sdu_is_segmented  == 0 )          &&
       ((rlc_status.head_sdu_remaining_size_to_send + header_offset ) <= buflen )
       )){
       rv = 1;

       UE_mac_inst[module_idP].cba_last_access[0]= round(uniform_rngen(1,30));
       LOG_D(MAC,"[UE %d] Frame %d Subframe %d: start a new CBA backoff  %d UL active state %d \n", module_idP, frameP, subframe,
       UE_mac_inst[module_idP].cba_last_access[0], UE_mac_inst[module_idP].ul_active);
       } else
       UE_mac_inst[module_idP].cba_last_access[0]= round(uniform_rngen(1,5));


       } else if (( ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1]> 0 ))   ||
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2]> 0 ))   ||
       ((UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3]> 0 )) )
       // && (UE_mac_inst[module_idP].ul_active == 0) // check if the ul is acrtive
       && (UE_mac_inst[module_idP].cba_last_access[0]> 0) )
       {

       UE_mac_inst[module_idP].cba_last_access[0]-=1;
       LOG_D(MAC,"[UE %d] Frame %d Subframe %d: wait for backoff to expire (%d) CBA UL active state %d \n",
       module_idP, frameP, subframe,
       UE_mac_inst[module_idP].cba_last_access[0], UE_mac_inst[module_idP].ul_active);
       }
       }
     */
3037

3038 3039 3040 3041
}
#endif


3042 3043 3044
boolean_t
update_bsr(module_id_t module_idP, frame_t frameP,
	   sub_frame_t subframeP, eNB_index_t eNB_index)
3045
{
3046 3047

  mac_rlc_status_resp_t rlc_status;
3048 3049 3050 3051 3052
  boolean_t bsr_regular_triggered = FALSE;
  uint8_t lcid;
  uint8_t lcgid;
  uint8_t num_lcid_with_data = 0; // for LCID with data only if LCGID is defined
  uint16_t lcgid_buffer_remain[MAX_NUM_LCGID] = {0,0,0,0};
3053
  int32_t lcid_bytes_in_buffer[MAX_NUM_LCID];
3054 3055 3056 3057 3058 3059 3060 3061
  /* Array for ordering LCID with data per decreasing priority order */
  uint8_t lcid_reordered_array[MAX_NUM_LCID]=
  {MAX_NUM_LCID,MAX_NUM_LCID,MAX_NUM_LCID,MAX_NUM_LCID,MAX_NUM_LCID,MAX_NUM_LCID,MAX_NUM_LCID,MAX_NUM_LCID,MAX_NUM_LCID,MAX_NUM_LCID,MAX_NUM_LCID};
  uint8_t pos_next = 0;
  uint8_t highest_priority = 16;
  uint8_t array_index = 0;

  // Reset All BSR Infos
hbilel's avatar
hbilel committed
3062
  lcid_bytes_in_buffer[0] = 0;
3063 3064 3065 3066 3067
  for (lcid=DCCH; lcid < MAX_NUM_LCID; lcid++)
  {
	  // Reset transmission status
	  lcid_bytes_in_buffer[lcid] = 0;
	  UE_mac_inst[module_idP].scheduling_info.LCID_status[lcid]=LCID_EMPTY;
3068
  }
3069

hbilel's avatar
hbilel committed
3070
  for (lcgid=0; lcgid < MAX_NUM_LCGID; lcgid++)
3071 3072 3073 3074
  {
	  // Reset Buffer Info
	  UE_mac_inst[module_idP].scheduling_info.BSR[lcgid]=0;
	  UE_mac_inst[module_idP].scheduling_info.BSR_bytes[lcgid]=0;
3075
  }
Raymond Knopp's avatar
 
Raymond Knopp committed
3076

3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089
  //Get Buffer Occupancy and fill lcid_reordered_array
  for (lcid=DCCH; lcid < MAX_NUM_LCID; lcid++)
  {
	  if (UE_mac_inst[module_idP].logicalChannelConfig[lcid])
	  {
		  	lcgid = UE_mac_inst[module_idP].scheduling_info.LCGID[lcid];

		  	// Store already available data to transmit per Group
		  	if (lcgid < MAX_NUM_LCGID)
		  	{
			  	lcgid_buffer_remain[lcgid] += UE_mac_inst[module_idP].scheduling_info.LCID_buffer_remain[lcid];
		  	}

3090
		    rlc_status = mac_rlc_status_ind(module_idP, UE_mac_inst[module_idP].crnti,eNB_index,frameP,subframeP,ENB_FLAG_NO,MBMS_FLAG_NO,
3091
		                                    lcid,
3092
		                                    0xFFFF //TBS is not used in RLC at this step, set a special value for debug
3093
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
3094 3095 3096
                                          ,0, 0
#endif
                                          );
3097 3098 3099 3100 3101

		    lcid_bytes_in_buffer[lcid] = rlc_status.bytes_in_buffer;

		    if (rlc_status.bytes_in_buffer > 0)
		    {
hbilel's avatar
hbilel committed
3102 3103
		          LOG_D(MAC,"[UE %d] PDCCH Tick : LCID%d LCGID%d has data to transmit =%d bytes at frame %d subframe %d\n",
		                              module_idP, lcid,lcgid,rlc_status.bytes_in_buffer,frameP,subframeP);
3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132

		         UE_mac_inst[module_idP].scheduling_info.LCID_status[lcid] = LCID_NOT_EMPTY;
		         //Update BSR_bytes and position in lcid_reordered_array only if Group is defined
		         if (lcgid < MAX_NUM_LCGID)
		         {
		        	 num_lcid_with_data ++;
			         // sum lcid buffer which has same lcgid
			         UE_mac_inst[module_idP].scheduling_info.BSR_bytes[lcgid] += rlc_status.bytes_in_buffer;

			         //Fill in the array
			         array_index = 0;
			         do
					{
			        	 if (UE_mac_inst[module_idP].logicalChannelConfig[lcid]->ul_SpecificParameters->priority <= highest_priority)
			        	 {
			        		 //Insert if priority is higher or equal (lower or equal in value)
			        		 for (pos_next=num_lcid_with_data-1; pos_next > array_index; pos_next--)
			        		 {
			        			 lcid_reordered_array[pos_next] = lcid_reordered_array[pos_next - 1];

			        		 }
			        		 lcid_reordered_array[array_index] = lcid;
			        		 break;

			        	 }
			        	 array_index ++;
					}
			         while ((array_index < num_lcid_with_data) && (array_index < MAX_NUM_LCID));
		         }
3133 3134
	    }
	}
3135

3136
    }
3137

3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189
    // Check whether a regular BSR can be triggered according to the first cases in 36.321
    if (num_lcid_with_data) {
	LOG_D(MAC,
	      "[UE %d] PDCCH Tick at frame %d subframe %d: NumLCID with data=%d Reordered LCID0=%d LCID1=%d LCID2=%d\n",
	      module_idP, frameP, subframeP, num_lcid_with_data,
	      lcid_reordered_array[0], lcid_reordered_array[1],
	      lcid_reordered_array[2]);

	for (array_index = 0; array_index < num_lcid_with_data;
	     array_index++) {
	    lcid = lcid_reordered_array[array_index];
	    /* UL data, for a logical channel which belongs to a LCG, becomes available for transmission in the RLC entity
	       either the data belongs to a logical channel with higher priority than the priorities of the logical channels
	       which belong to any LCG and for which data is already available for transmission
	     */
	    if ((UE_mac_inst[module_idP].
		 scheduling_info.LCID_buffer_remain[lcid] == 0)
		/* or there is no data available for any of the logical channels which belong to a LCG */
		||
		(lcgid_buffer_remain
		 [UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]] ==
		 0)) {
		bsr_regular_triggered = TRUE;

		LOG_D(MAC,
		      "[UE %d] PDCCH Tick : MAC BSR Triggered LCID%d LCGID%d data become available at frame %d subframe %d\n",
		      module_idP, lcid,
		      UE_mac_inst[module_idP].scheduling_info.LCGID[lcid],
		      frameP, subframeP);

		break;
	    }
	}

	// Trigger Regular BSR if ReTxBSR Timer has expired and UE has data for transmission
	if (UE_mac_inst[module_idP].scheduling_info.retxBSR_SF == 0) {
	    bsr_regular_triggered = TRUE;

	    if ((UE_mac_inst[module_idP].BSR_reporting_active &
		 BSR_TRIGGER_REGULAR) == 0) {
		LOG_I(MAC,
		      "[UE %d] PDCCH Tick : MAC BSR Triggered ReTxBSR Timer expiry at frame %d subframe %d\n",
		      module_idP, frameP, subframeP);
	    }

	}
    }
    //Store Buffer Occupancy in remain buffers for next TTI
    for (lcid = DCCH; lcid < MAX_NUM_LCID; lcid++) {
	UE_mac_inst[module_idP].scheduling_info.LCID_buffer_remain[lcid] =
	    lcid_bytes_in_buffer[lcid];
    }
3190

3191
    return bsr_regular_triggered;
3192 3193
}

3194 3195
uint8_t
locate_BsrIndexByBufferSize(const uint32_t * table, int size, int value)
3196
{
3197

3198 3199
    uint8_t ju, jm, jl;
    int ascend;
3200

3201 3202
    DevAssert(size > 0);
    DevAssert(size <= 256);
3203

3204 3205 3206
    if (value == 0) {
	return 0;		//elseif (value > 150000) return 63;
    }
3207

3208 3209 3210
    jl = 0;			// lower bound
    ju = size - 1;		// upper bound
    ascend = (table[ju] >= table[jl]) ? 1 : 0;	// determine the order of the the table:  1 if ascending order of table, 0 otherwise
3211

3212 3213
    while (ju - jl > 1) {	//If we are not yet done,
	jm = (ju + jl) >> 1;	//compute a midpoint,
3214

3215 3216 3217 3218 3219
	if ((value >= table[jm]) == ascend) {
	    jl = jm;		// replace the lower limit
	} else {
	    ju = jm;		//replace the upper limit
	}
3220

3221 3222 3223 3224
	LOG_T(MAC,
	      "[UE] searching BSR index %d for (BSR TABLE %d < value %d)\n",
	      jm, table[jm], value);
    }
3225

3226 3227 3228 3229 3230
    if (value == table[jl]) {
	return jl;
    } else {
	return jl + 1;		//equally  ju
    }
3231 3232 3233

}

3234 3235
int get_sf_periodicBSRTimer(uint8_t sf_offset)
{
3236

3237
    switch (sf_offset) {
3238
    case LTE_PeriodicBSR_Timer_r12_sf5:
3239 3240
	return 5;
	break;
3241

3242
    case LTE_PeriodicBSR_Timer_r12_sf10:
3243 3244
	return 10;
	break;
3245

3246
    case LTE_PeriodicBSR_Timer_r12_sf16:
3247 3248
	return 16;
	break;
3249

3250
    case LTE_PeriodicBSR_Timer_r12_sf20:
3251 3252
	return 20;
	break;
3253

3254
    case LTE_PeriodicBSR_Timer_r12_sf32:
3255 3256
	return 32;
	break;
3257

3258
    case LTE_PeriodicBSR_Timer_r12_sf40:
3259 3260
	return 40;
	break;
3261

3262
    case LTE_PeriodicBSR_Timer_r12_sf64:
3263 3264
	return 64;
	break;
3265

3266
    case LTE_PeriodicBSR_Timer_r12_sf80:
3267 3268
	return 80;
	break;
3269

3270
    case LTE_PeriodicBSR_Timer_r12_sf128:
3271 3272
	return 128;
	break;
3273

3274
    case LTE_PeriodicBSR_Timer_r12_sf160:
3275 3276
	return 160;
	break;
3277

3278
    case LTE_PeriodicBSR_Timer_r12_sf320:
3279 3280
	return 320;
	break;
3281

3282
    case LTE_PeriodicBSR_Timer_r12_sf640:
3283 3284
	return 640;
	break;
3285

3286
    case LTE_PeriodicBSR_Timer_r12_sf1280:
3287 3288
	return 1280;
	break;
3289

3290
    case LTE_PeriodicBSR_Timer_r12_sf2560:
3291 3292
	return 2560;
	break;
3293

3294
    case LTE_PeriodicBSR_Timer_r12_infinity:
3295 3296 3297 3298
    default:
	return 0xFFFF;
	break;
    }
3299 3300
}

3301 3302
int get_sf_retxBSRTimer(uint8_t sf_offset)
{
3303

3304
    switch (sf_offset) {
3305
    case LTE_RetxBSR_Timer_r12_sf320:
3306 3307
	return 320;
	break;
3308

3309
    case LTE_RetxBSR_Timer_r12_sf640:
3310 3311
	return 640;
	break;
3312

3313
    case LTE_RetxBSR_Timer_r12_sf1280:
3314 3315
	return 1280;
	break;
3316

3317
    case LTE_RetxBSR_Timer_r12_sf2560:
3318 3319
	return 2560;
	break;
3320

3321
    case LTE_RetxBSR_Timer_r12_sf5120:
3322 3323
	return 5120;
	break;
3324

3325
    case LTE_RetxBSR_Timer_r12_sf10240:
3326 3327
	return 10240;
	break;
3328

3329 3330 3331 3332
    default:
	return -1;
	break;
    }
3333
}
3334

3335 3336
int get_ms_bucketsizeduration(uint8_t bucketsizeduration)
{
3337

3338
    switch (bucketsizeduration) {
3339
    case LTE_LogicalChannelConfig__ul_SpecificParameters__bucketSizeDuration_ms50:
3340 3341 3342 3343
	return
	    50;
	break;

3344
    case LTE_LogicalChannelConfig__ul_SpecificParameters__bucketSizeDuration_ms100:
3345 3346 3347 3348
	return
	    100;
	break;

3349
    case LTE_LogicalChannelConfig__ul_SpecificParameters__bucketSizeDuration_ms150:
3350 3351 3352 3353
	return
	    150;
	break;

3354
    case LTE_LogicalChannelConfig__ul_SpecificParameters__bucketSizeDuration_ms300:
3355 3356 3357 3358
	return
	    300;
	break;

3359
    case LTE_LogicalChannelConfig__ul_SpecificParameters__bucketSizeDuration_ms500:
3360 3361 3362 3363
	return
	    500;
	break;

3364
    case LTE_LogicalChannelConfig__ul_SpecificParameters__bucketSizeDuration_ms1000:
3365 3366 3367 3368 3369 3370 3371 3372
	return
	    1000;
	break;

    default:
	return 0;
	break;
    }
3373 3374
}

3375
void update_phr(module_id_t module_idP, int CC_id)
3376
{
Raymond Knopp's avatar
 
Raymond Knopp committed
3377

3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388
    AssertFatal(CC_id == 0,
		"Transmission on secondary CCs is not supported yet\n");

    UE_mac_inst[module_idP].PHR_reporting_active = 0;
    UE_mac_inst[module_idP].scheduling_info.periodicPHR_SF =
	get_sf_perioidicPHR_Timer(UE_mac_inst[module_idP].
				  scheduling_info.periodicPHR_Timer);
    UE_mac_inst[module_idP].scheduling_info.prohibitPHR_SF =
	get_sf_prohibitPHR_Timer(UE_mac_inst[module_idP].
				 scheduling_info.prohibitPHR_Timer);
    // LOG_D(MAC,"phr %d %d\n ",UE_mac_inst[module_idP].scheduling_info.periodicPHR_SF, UE_mac_inst[module_idP].scheduling_info.prohibitPHR_SF);
3389
}
3390 3391 3392

uint8_t
get_phr_mapping(module_id_t module_idP, int CC_id, uint8_t eNB_index)
3393
{
3394

3395 3396
    AssertFatal(CC_id == 0,
		"Transmission on secondary CCs is not supported yet\n");
3397

3398 3399 3400 3401 3402 3403 3404 3405 3406
    //power headroom reporting range is from -23 ...+40 dB, as described in 36313
    //note: mac_xface->get_Po_NOMINAL_PUSCH(module_idP) is float
    if (get_PHR(module_idP, CC_id, eNB_index) < -23) {
	return 0;
    } else if (get_PHR(module_idP, CC_id, eNB_index) >= 40) {
	return 63;
    } else {			// -23 to 40
	return (uint8_t) get_PHR(module_idP, CC_id,
				 eNB_index) + PHR_MAPPING_OFFSET;
3407

3408
    }
3409
}
3410

3411 3412
int get_sf_perioidicPHR_Timer(uint8_t perioidicPHR_Timer)
{
3413
    return (perioidicPHR_Timer + 1) * 10;
3414 3415 3416
}


3417 3418
int get_sf_prohibitPHR_Timer(uint8_t prohibitPHR_Timer)
{
3419
    return (prohibitPHR_Timer) * 10;
3420 3421
}

3422 3423
int get_db_dl_PathlossChange(uint8_t dl_PathlossChange)
{
3424
    switch (dl_PathlossChange) {
3425
    case LTE_MAC_MainConfig__phr_Config__setup__dl_PathlossChange_dB1:
3426 3427 3428
	return 1;
	break;

3429
    case LTE_MAC_MainConfig__phr_Config__setup__dl_PathlossChange_dB3:
3430 3431 3432
	return 3;
	break;

3433
    case LTE_MAC_MainConfig__phr_Config__setup__dl_PathlossChange_dB6:
3434 3435 3436
	return 6;
	break;

3437
    case LTE_MAC_MainConfig__phr_Config__setup__dl_PathlossChange_infinity:
3438 3439 3440 3441
    default:
	return -1;
	break;
    }
3442
}
3443 3444


3445
SLSS_t *ue_get_slss(module_id_t Mod_id,int CC_id,frame_t frame_tx,sub_frame_t subframe_tx) {
3446

3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533
  return((SLSS_t*)NULL);
}

SLDCH_t *ue_get_sldch(module_id_t Mod_id,int CC_id,frame_t frame_tx,sub_frame_t subframe_tx) {

    //UE_MAC_INST *ue = &UE_mac_inst[Mod_id];
    SLDCH_t *sldch = &UE_mac_inst[Mod_id].sldch;

    sldch->payload_length = mac_rrc_data_req_ue(Mod_id,
                CC_id,
                frame_tx,
                SL_DISCOVERY,
                1,
                (uint8_t*)(sldch->payload), //&UE_mac_inst[Mod_id].SL_Discovery[0].Tx_buffer.Payload[0],
                0, //eNB_indexP
                0);



   if (sldch->payload_length >0 ) {
     LOG_I(MAC,"Got %d bytes from RRC for SLDCH @ %p\n",sldch->payload_length,sldch);
     return (sldch);
   }
   else

   return((SLDCH_t*)NULL);
}


SLSCH_t *ue_get_slsch(module_id_t module_idP,int CC_id,frame_t frameP,sub_frame_t subframeP) {

   mac_rlc_status_resp_t rlc_status; //, rlc_status_data;
   uint32_t absSF = (frameP*10)+subframeP;
   UE_MAC_INST *ue = &UE_mac_inst[module_idP];
   int rvtab[4] = {0,2,3,1};
   int sdu_length;
   //uint8_t sl_lcids[2] = {3, 10}; //list of lcids for SL - hardcoded
   int i = 0;

   // Note: this is hard-coded for now for the default SL configuration (4 SF PSCCH, 36 SF PSSCH)
   SLSCH_t *slsch = &UE_mac_inst[module_idP].slsch;

   LOG_D(MAC,"Checking SLSCH for absSF %d\n",absSF);
   if ((absSF%40) == 0) { // fill PSCCH data later in first subframe of SL period
      ue->sltx_active = 0;

      for (i = 0; i < MAX_NUM_LCID; i++){
         if (ue->SL_LCID[i] > 0) {
            for (int j = 0; j < ue->numCommFlows; j++){
               if ((ue->sourceL2Id > 0) && (ue->destinationList[j] >0) ){
                  rlc_status = mac_rlc_status_ind(module_idP, 0x1234,0,frameP,subframeP,ENB_FLAG_NO,MBMS_FLAG_NO,
                        ue->SL_LCID[i], 0xFFFF, ue->sourceL2Id, ue->destinationList[j]);
                  if (rlc_status.bytes_in_buffer > 2){
                     LOG_I(MAC,"SFN.SF %d.%d: Scheduling for %d bytes in Sidelink buffer\n",frameP,subframeP,rlc_status.bytes_in_buffer);
                     // Fill in group id for off-network communications
                     ue->sltx_active = 1;
                     //store LCID, destinationL2Id
                     ue->slsch_lcid =  ue->SL_LCID[i];
                     ue->destinationL2Id = ue->destinationList[j];
                     break;
                  }
               }
            }
         }
         if ( ue->sltx_active == 1) break;
      }
   } // we're not in the SCCH period
   else if (((absSF & 3) == 0 ) &&
         (ue->sltx_active == 1)) { // every 4th subframe, check for new data from RLC
      // 10 PRBs, mcs 19
      int TBS = 4584/8;
      int req;


      if (TBS <= rlc_status.bytes_in_buffer) req = TBS;
      else req = rlc_status.bytes_in_buffer;

      if (req>0) {
         sdu_length = mac_rlc_data_req(module_idP,
               0x1234,
               0,
               frameP,
               ENB_FLAG_NO,
               MBMS_FLAG_NO,
               ue->slsch_lcid,
               req,
               (char*)(ue->slsch_pdu.payload + sizeof(SLSCH_SUBHEADER_24_Bit_DST_LONG))
3534
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592
               ,ue->sourceL2Id,
               ue->destinationL2Id
#endif
         );

         // Notes: 1. hard-coded to 24-bit destination format for now
         if (sdu_length > 0) {

            LOG_I(MAC,"SFN.SF %d.%d : got %d bytes from Sidelink buffer (%d requested)\n",frameP,subframeP,sdu_length,req);
            LOG_I(MAC,"sourceL2Id: 0x%08x \n",ue->sourceL2Id);
            LOG_I(MAC,"groupL2Id/destinationL2Id: 0x%08x \n",ue->destinationL2Id);

            slsch->payload = (unsigned char*)ue->slsch_pdu.payload;
            if (sdu_length < 128) {
               slsch->payload++;
               SLSCH_SUBHEADER_24_Bit_DST_SHORT *shorth= (SLSCH_SUBHEADER_24_Bit_DST_SHORT *)slsch->payload;
               shorth->F = 0;
               shorth->L = sdu_length;
               shorth->E = 0;
               shorth->LCID = ue->slsch_lcid;
               shorth->SRC07 = (ue->sourceL2Id>>16) & 0x000000ff;
               shorth->SRC815 = (ue->sourceL2Id>>8) & 0x000000ff;
               shorth->SRC1623 = ue->sourceL2Id & 0x000000ff;
               shorth->DST07 = (ue->destinationL2Id >>16) & 0x000000ff;
               shorth->DST815 = (ue->destinationL2Id >>8) & 0x000000ff;
               shorth->DST1623 = ue->destinationL2Id & 0x000000ff;
               shorth->V = 0x1;
            }
            else {
               SLSCH_SUBHEADER_24_Bit_DST_LONG *longh= (SLSCH_SUBHEADER_24_Bit_DST_LONG *)slsch->payload;
               longh->F = 1;
               longh->L_LSB = sdu_length&0xff;
               longh->L_MSB = (sdu_length>>8)&0x7f;
               longh->E = 0;
               longh->LCID = ue->slsch_lcid;
               longh->SRC07 = (ue->sourceL2Id >>16) & 0x000000ff;
               longh->SRC815 = (ue->sourceL2Id>>8) & 0x000000ff;
               longh->SRC1623 = ue->sourceL2Id & 0x000000ff;
               longh->DST07 = (ue->destinationL2Id >>16) & 0x000000ff;
               longh->DST815 = (ue->destinationL2Id>>8) & 0x000000ff;
               longh->DST1623 = ue->destinationL2Id & 0x000000ff;
               longh->V = 0x1;
            }
            slsch->rvidx = 0;
            slsch->payload_length = TBS;
            // fill in SLSCH configuration
            return(&ue->slsch);
         }
         else ue->sltx_active = 0;
      }

   } else if ((absSF%40)>3 && ue->sltx_active == 1) { // handle retransmission of SDU
      LOG_I(MAC,"SFN.SF %d.%d : retransmission\n",frameP,subframeP);
      slsch->rvidx = rvtab[absSF&3];
      return(&ue->slsch);
   }

  return(NULL);
3593
}