A Discrete-Event Network Simulator
API
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tdmt-ff-mac-scheduler.cc
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1/*
2 * Copyright (c) 2011 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
3 *
4 * SPDX-License-Identifier: GPL-2.0-only
5 *
6 * Author: Marco Miozzo <marco.miozzo@cttc.es>
7 * Modification: Dizhi Zhou <dizhi.zhou@gmail.com> // modify codes related to downlink scheduler
8 */
9
11
12#include "lte-amc.h"
14
15#include <ns3/boolean.h>
16#include <ns3/log.h>
17#include <ns3/math.h>
18#include <ns3/pointer.h>
19#include <ns3/simulator.h>
20
21#include <cfloat>
22#include <set>
23
24namespace ns3
25{
26
27NS_LOG_COMPONENT_DEFINE("TdMtFfMacScheduler");
28
29/// TDMT type 0 allocation RBG
30static const int TdMtType0AllocationRbg[4] = {
31 10, // RBG size 1
32 26, // RBG size 2
33 63, // RBG size 3
34 110, // RBG size 4
35}; // see table 7.1.6.1-1 of 36.213
36
37NS_OBJECT_ENSURE_REGISTERED(TdMtFfMacScheduler);
38
40 : m_cschedSapUser(nullptr),
41 m_schedSapUser(nullptr),
42 m_nextRntiUl(0)
43{
47}
48
53
54void
68
71{
72 static TypeId tid =
73 TypeId("ns3::TdMtFfMacScheduler")
75 .SetGroupName("Lte")
76 .AddConstructor<TdMtFfMacScheduler>()
77 .AddAttribute("CqiTimerThreshold",
78 "The number of TTIs a CQI is valid (default 1000 - 1 sec.)",
79 UintegerValue(1000),
82 .AddAttribute("HarqEnabled",
83 "Activate/Deactivate the HARQ [by default is active].",
84 BooleanValue(true),
87 .AddAttribute("UlGrantMcs",
88 "The MCS of the UL grant, must be [0..15] (default 0)",
92 return tid;
93}
94
95void
100
101void
106
112
118
119void
124
130
131void
143
144void
147{
148 NS_LOG_FUNCTION(this << " RNTI " << params.m_rnti << " txMode "
149 << (uint16_t)params.m_transmissionMode);
150 auto it = m_uesTxMode.find(params.m_rnti);
151 if (it == m_uesTxMode.end())
152 {
153 m_uesTxMode[params.m_rnti] = params.m_transmissionMode;
154 // generate HARQ buffers
155 m_dlHarqCurrentProcessId[params.m_rnti] = 0;
156 DlHarqProcessesStatus_t dlHarqPrcStatus;
157 dlHarqPrcStatus.resize(8, 0);
158 m_dlHarqProcessesStatus[params.m_rnti] = dlHarqPrcStatus;
159 DlHarqProcessesTimer_t dlHarqProcessesTimer;
160 dlHarqProcessesTimer.resize(8, 0);
161 m_dlHarqProcessesTimer[params.m_rnti] = dlHarqProcessesTimer;
163 dlHarqdci.resize(8);
164 m_dlHarqProcessesDciBuffer[params.m_rnti] = dlHarqdci;
165 DlHarqRlcPduListBuffer_t dlHarqRlcPdu;
166 dlHarqRlcPdu.resize(2);
167 dlHarqRlcPdu.at(0).resize(8);
168 dlHarqRlcPdu.at(1).resize(8);
169 m_dlHarqProcessesRlcPduListBuffer[params.m_rnti] = dlHarqRlcPdu;
170 m_ulHarqCurrentProcessId[params.m_rnti] = 0;
171 UlHarqProcessesStatus_t ulHarqPrcStatus;
172 ulHarqPrcStatus.resize(8, 0);
173 m_ulHarqProcessesStatus[params.m_rnti] = ulHarqPrcStatus;
175 ulHarqdci.resize(8);
176 m_ulHarqProcessesDciBuffer[params.m_rnti] = ulHarqdci;
177 }
178 else
179 {
180 (*it).second = params.m_transmissionMode;
181 }
182}
183
184void
187{
188 NS_LOG_FUNCTION(this << " New LC, rnti: " << params.m_rnti);
189
190 for (std::size_t i = 0; i < params.m_logicalChannelConfigList.size(); i++)
191 {
192 auto it = m_flowStatsDl.find(params.m_rnti);
193
194 if (it == m_flowStatsDl.end())
195 {
196 m_flowStatsDl.insert(params.m_rnti);
197 m_flowStatsUl.insert(params.m_rnti);
198 }
199 }
200}
201
202void
205{
206 NS_LOG_FUNCTION(this);
207 for (std::size_t i = 0; i < params.m_logicalChannelIdentity.size(); i++)
208 {
209 auto it = m_rlcBufferReq.begin();
210 while (it != m_rlcBufferReq.end())
211 {
212 if (((*it).first.m_rnti == params.m_rnti) &&
213 ((*it).first.m_lcId == params.m_logicalChannelIdentity.at(i)))
214 {
215 auto temp = it;
216 it++;
217 m_rlcBufferReq.erase(temp);
218 }
219 else
220 {
221 it++;
222 }
223 }
224 }
225}
226
227void
230{
231 NS_LOG_FUNCTION(this);
232
233 m_uesTxMode.erase(params.m_rnti);
234 m_dlHarqCurrentProcessId.erase(params.m_rnti);
235 m_dlHarqProcessesStatus.erase(params.m_rnti);
236 m_dlHarqProcessesTimer.erase(params.m_rnti);
237 m_dlHarqProcessesDciBuffer.erase(params.m_rnti);
238 m_dlHarqProcessesRlcPduListBuffer.erase(params.m_rnti);
239 m_ulHarqCurrentProcessId.erase(params.m_rnti);
240 m_ulHarqProcessesStatus.erase(params.m_rnti);
241 m_ulHarqProcessesDciBuffer.erase(params.m_rnti);
242 m_flowStatsDl.erase(params.m_rnti);
243 m_flowStatsUl.erase(params.m_rnti);
244 m_ceBsrRxed.erase(params.m_rnti);
245 auto it = m_rlcBufferReq.begin();
246 while (it != m_rlcBufferReq.end())
247 {
248 if ((*it).first.m_rnti == params.m_rnti)
249 {
250 auto temp = it;
251 it++;
252 m_rlcBufferReq.erase(temp);
253 }
254 else
255 {
256 it++;
257 }
258 }
259 if (m_nextRntiUl == params.m_rnti)
260 {
261 m_nextRntiUl = 0;
262 }
263}
264
265void
268{
269 NS_LOG_FUNCTION(this << params.m_rnti << (uint32_t)params.m_logicalChannelIdentity);
270 // API generated by RLC for updating RLC parameters on a LC (tx and retx queues)
271
272 LteFlowId_t flow(params.m_rnti, params.m_logicalChannelIdentity);
273
274 auto it = m_rlcBufferReq.find(flow);
275
276 if (it == m_rlcBufferReq.end())
277 {
278 m_rlcBufferReq[flow] = params;
279 }
280 else
281 {
282 (*it).second = params;
283 }
284}
285
286void
293
294void
301
302int
304{
305 for (int i = 0; i < 4; i++)
306 {
307 if (dlbandwidth < TdMtType0AllocationRbg[i])
308 {
309 return i + 1;
310 }
311 }
312
313 return -1;
314}
315
316unsigned int
318{
319 unsigned int lcActive = 0;
320 for (auto it = m_rlcBufferReq.begin(); it != m_rlcBufferReq.end(); it++)
321 {
322 if (((*it).first.m_rnti == rnti) && (((*it).second.m_rlcTransmissionQueueSize > 0) ||
323 ((*it).second.m_rlcRetransmissionQueueSize > 0) ||
324 ((*it).second.m_rlcStatusPduSize > 0)))
325 {
326 lcActive++;
327 }
328 if ((*it).first.m_rnti > rnti)
329 {
330 break;
331 }
332 }
333 return lcActive;
334}
335
336bool
338{
339 NS_LOG_FUNCTION(this << rnti);
340
341 auto it = m_dlHarqCurrentProcessId.find(rnti);
342 if (it == m_dlHarqCurrentProcessId.end())
343 {
344 NS_FATAL_ERROR("No Process Id found for this RNTI " << rnti);
345 }
346 auto itStat = m_dlHarqProcessesStatus.find(rnti);
347 if (itStat == m_dlHarqProcessesStatus.end())
348 {
349 NS_FATAL_ERROR("No Process Id Statusfound for this RNTI " << rnti);
350 }
351 uint8_t i = (*it).second;
352 do
353 {
354 i = (i + 1) % HARQ_PROC_NUM;
355 } while (((*itStat).second.at(i) != 0) && (i != (*it).second));
356
357 return (*itStat).second.at(i) == 0;
358}
359
360uint8_t
362{
363 NS_LOG_FUNCTION(this << rnti);
364
365 if (!m_harqOn)
366 {
367 return 0;
368 }
369
370 auto it = m_dlHarqCurrentProcessId.find(rnti);
371 if (it == m_dlHarqCurrentProcessId.end())
372 {
373 NS_FATAL_ERROR("No Process Id found for this RNTI " << rnti);
374 }
375 auto itStat = m_dlHarqProcessesStatus.find(rnti);
376 if (itStat == m_dlHarqProcessesStatus.end())
377 {
378 NS_FATAL_ERROR("No Process Id Statusfound for this RNTI " << rnti);
379 }
380 uint8_t i = (*it).second;
381 do
382 {
383 i = (i + 1) % HARQ_PROC_NUM;
384 } while (((*itStat).second.at(i) != 0) && (i != (*it).second));
385 if ((*itStat).second.at(i) == 0)
386 {
387 (*it).second = i;
388 (*itStat).second.at(i) = 1;
389 }
390 else
391 {
392 NS_FATAL_ERROR("No HARQ process available for RNTI "
393 << rnti << " check before update with HarqProcessAvailability");
394 }
395
396 return (*it).second;
397}
398
399void
401{
402 NS_LOG_FUNCTION(this);
403
404 for (auto itTimers = m_dlHarqProcessesTimer.begin(); itTimers != m_dlHarqProcessesTimer.end();
405 itTimers++)
406 {
407 for (uint16_t i = 0; i < HARQ_PROC_NUM; i++)
408 {
409 if ((*itTimers).second.at(i) == HARQ_DL_TIMEOUT)
410 {
411 // reset HARQ process
412
413 NS_LOG_DEBUG(this << " Reset HARQ proc " << i << " for RNTI " << (*itTimers).first);
414 auto itStat = m_dlHarqProcessesStatus.find((*itTimers).first);
415 if (itStat == m_dlHarqProcessesStatus.end())
416 {
417 NS_FATAL_ERROR("No Process Id Status found for this RNTI "
418 << (*itTimers).first);
419 }
420 (*itStat).second.at(i) = 0;
421 (*itTimers).second.at(i) = 0;
422 }
423 else
424 {
425 (*itTimers).second.at(i)++;
426 }
427 }
428 }
429}
430
431void
434{
435 NS_LOG_FUNCTION(this << " Frame no. " << (params.m_sfnSf >> 4) << " subframe no. "
436 << (0xF & params.m_sfnSf));
437 // API generated by RLC for triggering the scheduling of a DL subframe
438
439 // evaluate the relative channel quality indicator for each UE per each RBG
440 // (since we are using allocation type 0 the small unit of allocation is RBG)
441 // Resource allocation type 0 (see sec 7.1.6.1 of 36.213)
442
444
446 int rbgNum = m_cschedCellConfig.m_dlBandwidth / rbgSize;
447 std::map<uint16_t, std::vector<uint16_t>> allocationMap; // RBs map per RNTI
448 std::vector<bool> rbgMap; // global RBGs map
449 uint16_t rbgAllocatedNum = 0;
450 std::set<uint16_t> rntiAllocated;
451 rbgMap.resize(m_cschedCellConfig.m_dlBandwidth / rbgSize, false);
453
454 // update UL HARQ proc id
455 for (auto itProcId = m_ulHarqCurrentProcessId.begin();
456 itProcId != m_ulHarqCurrentProcessId.end();
457 itProcId++)
458 {
459 (*itProcId).second = ((*itProcId).second + 1) % HARQ_PROC_NUM;
460 }
461
462 // RACH Allocation
464 uint16_t rbStart = 0;
465 for (auto itRach = m_rachList.begin(); itRach != m_rachList.end(); itRach++)
466 {
468 (*itRach).m_estimatedSize,
469 " Default UL Grant MCS does not allow to send RACH messages");
471 newRar.m_rnti = (*itRach).m_rnti;
472 // DL-RACH Allocation
473 // Ideal: no needs of configuring m_dci
474 // UL-RACH Allocation
475 newRar.m_grant.m_rnti = newRar.m_rnti;
476 newRar.m_grant.m_mcs = m_ulGrantMcs;
477 uint16_t rbLen = 1;
478 uint16_t tbSizeBits = 0;
479 // find lowest TB size that fits UL grant estimated size
480 while ((tbSizeBits < (*itRach).m_estimatedSize) &&
481 (rbStart + rbLen < m_cschedCellConfig.m_ulBandwidth))
482 {
483 rbLen++;
484 tbSizeBits = m_amc->GetUlTbSizeFromMcs(m_ulGrantMcs, rbLen);
485 }
486 if (tbSizeBits < (*itRach).m_estimatedSize)
487 {
488 // no more allocation space: finish allocation
489 break;
490 }
491 newRar.m_grant.m_rbStart = rbStart;
492 newRar.m_grant.m_rbLen = rbLen;
493 newRar.m_grant.m_tbSize = tbSizeBits / 8;
494 newRar.m_grant.m_hopping = false;
495 newRar.m_grant.m_tpc = 0;
496 newRar.m_grant.m_cqiRequest = false;
497 newRar.m_grant.m_ulDelay = false;
498 NS_LOG_INFO(this << " UL grant allocated to RNTI " << (*itRach).m_rnti << " rbStart "
499 << rbStart << " rbLen " << rbLen << " MCS " << m_ulGrantMcs << " tbSize "
500 << newRar.m_grant.m_tbSize);
501 for (uint16_t i = rbStart; i < rbStart + rbLen; i++)
502 {
503 m_rachAllocationMap.at(i) = (*itRach).m_rnti;
504 }
505
506 if (m_harqOn)
507 {
508 // generate UL-DCI for HARQ retransmissions
509 UlDciListElement_s uldci;
510 uldci.m_rnti = newRar.m_rnti;
511 uldci.m_rbLen = rbLen;
512 uldci.m_rbStart = rbStart;
513 uldci.m_mcs = m_ulGrantMcs;
514 uldci.m_tbSize = tbSizeBits / 8;
515 uldci.m_ndi = 1;
516 uldci.m_cceIndex = 0;
517 uldci.m_aggrLevel = 1;
518 uldci.m_ueTxAntennaSelection = 3; // antenna selection OFF
519 uldci.m_hopping = false;
520 uldci.m_n2Dmrs = 0;
521 uldci.m_tpc = 0; // no power control
522 uldci.m_cqiRequest = false; // only period CQI at this stage
523 uldci.m_ulIndex = 0; // TDD parameter
524 uldci.m_dai = 1; // TDD parameter
525 uldci.m_freqHopping = 0;
526 uldci.m_pdcchPowerOffset = 0; // not used
527
528 uint8_t harqId = 0;
529 auto itProcId = m_ulHarqCurrentProcessId.find(uldci.m_rnti);
530 if (itProcId == m_ulHarqCurrentProcessId.end())
531 {
532 NS_FATAL_ERROR("No info find in HARQ buffer for UE " << uldci.m_rnti);
533 }
534 harqId = (*itProcId).second;
535 auto itDci = m_ulHarqProcessesDciBuffer.find(uldci.m_rnti);
536 if (itDci == m_ulHarqProcessesDciBuffer.end())
537 {
538 NS_FATAL_ERROR("Unable to find RNTI entry in UL DCI HARQ buffer for RNTI "
539 << uldci.m_rnti);
540 }
541 (*itDci).second.at(harqId) = uldci;
542 }
543
544 rbStart = rbStart + rbLen;
545 ret.m_buildRarList.push_back(newRar);
546 }
547 m_rachList.clear();
548
549 // Process DL HARQ feedback
551 // retrieve past HARQ retx buffered
552 if (!m_dlInfoListBuffered.empty())
553 {
554 if (!params.m_dlInfoList.empty())
555 {
556 NS_LOG_INFO(this << " Received DL-HARQ feedback");
558 params.m_dlInfoList.begin(),
559 params.m_dlInfoList.end());
560 }
561 }
562 else
563 {
564 if (!params.m_dlInfoList.empty())
565 {
566 m_dlInfoListBuffered = params.m_dlInfoList;
567 }
568 }
569 if (!m_harqOn)
570 {
571 // Ignore HARQ feedback
572 m_dlInfoListBuffered.clear();
573 }
574 std::vector<DlInfoListElement_s> dlInfoListUntxed;
575 for (std::size_t i = 0; i < m_dlInfoListBuffered.size(); i++)
576 {
577 auto itRnti = rntiAllocated.find(m_dlInfoListBuffered.at(i).m_rnti);
578 if (itRnti != rntiAllocated.end())
579 {
580 // RNTI already allocated for retx
581 continue;
582 }
583 auto nLayers = m_dlInfoListBuffered.at(i).m_harqStatus.size();
584 std::vector<bool> retx;
585 NS_LOG_INFO(this << " Processing DLHARQ feedback");
586 if (nLayers == 1)
587 {
588 retx.push_back(m_dlInfoListBuffered.at(i).m_harqStatus.at(0) ==
590 retx.push_back(false);
591 }
592 else
593 {
594 retx.push_back(m_dlInfoListBuffered.at(i).m_harqStatus.at(0) ==
596 retx.push_back(m_dlInfoListBuffered.at(i).m_harqStatus.at(1) ==
598 }
599 if (retx.at(0) || retx.at(1))
600 {
601 // retrieve HARQ process information
602 uint16_t rnti = m_dlInfoListBuffered.at(i).m_rnti;
603 uint8_t harqId = m_dlInfoListBuffered.at(i).m_harqProcessId;
604 NS_LOG_INFO(this << " HARQ retx RNTI " << rnti << " harqId " << (uint16_t)harqId);
605 auto itHarq = m_dlHarqProcessesDciBuffer.find(rnti);
606 if (itHarq == m_dlHarqProcessesDciBuffer.end())
607 {
608 NS_FATAL_ERROR("No info find in HARQ buffer for UE " << rnti);
609 }
610
611 DlDciListElement_s dci = (*itHarq).second.at(harqId);
612 int rv = 0;
613 if (dci.m_rv.size() == 1)
614 {
615 rv = dci.m_rv.at(0);
616 }
617 else
618 {
619 rv = (dci.m_rv.at(0) > dci.m_rv.at(1) ? dci.m_rv.at(0) : dci.m_rv.at(1));
620 }
621
622 if (rv == 3)
623 {
624 // maximum number of retx reached -> drop process
625 NS_LOG_INFO("Maximum number of retransmissions reached -> drop process");
626 auto it = m_dlHarqProcessesStatus.find(rnti);
627 if (it == m_dlHarqProcessesStatus.end())
628 {
629 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) "
630 << m_dlInfoListBuffered.at(i).m_rnti);
631 }
632 (*it).second.at(harqId) = 0;
633 auto itRlcPdu = m_dlHarqProcessesRlcPduListBuffer.find(rnti);
634 if (itRlcPdu == m_dlHarqProcessesRlcPduListBuffer.end())
635 {
636 NS_FATAL_ERROR("Unable to find RlcPdcList in HARQ buffer for RNTI "
637 << m_dlInfoListBuffered.at(i).m_rnti);
638 }
639 for (std::size_t k = 0; k < (*itRlcPdu).second.size(); k++)
640 {
641 (*itRlcPdu).second.at(k).at(harqId).clear();
642 }
643 continue;
644 }
645 // check the feasibility of retransmitting on the same RBGs
646 // translate the DCI to Spectrum framework
647 std::vector<int> dciRbg;
648 uint32_t mask = 0x1;
649 NS_LOG_INFO("Original RBGs " << dci.m_rbBitmap << " rnti " << dci.m_rnti);
650 for (int j = 0; j < 32; j++)
651 {
652 if (((dci.m_rbBitmap & mask) >> j) == 1)
653 {
654 dciRbg.push_back(j);
655 NS_LOG_INFO("\t" << j);
656 }
657 mask = (mask << 1);
658 }
659 bool free = true;
660 for (std::size_t j = 0; j < dciRbg.size(); j++)
661 {
662 if (rbgMap.at(dciRbg.at(j)))
663 {
664 free = false;
665 break;
666 }
667 }
668 if (free)
669 {
670 // use the same RBGs for the retx
671 // reserve RBGs
672 for (std::size_t j = 0; j < dciRbg.size(); j++)
673 {
674 rbgMap.at(dciRbg.at(j)) = true;
675 NS_LOG_INFO("RBG " << dciRbg.at(j) << " assigned");
676 rbgAllocatedNum++;
677 }
678
679 NS_LOG_INFO(this << " Send retx in the same RBGs");
680 }
681 else
682 {
683 // find RBGs for sending HARQ retx
684 uint8_t j = 0;
685 uint8_t rbgId = (dciRbg.at(dciRbg.size() - 1) + 1) % rbgNum;
686 uint8_t startRbg = dciRbg.at(dciRbg.size() - 1);
687 std::vector<bool> rbgMapCopy = rbgMap;
688 while ((j < dciRbg.size()) && (startRbg != rbgId))
689 {
690 if (!rbgMapCopy.at(rbgId))
691 {
692 rbgMapCopy.at(rbgId) = true;
693 dciRbg.at(j) = rbgId;
694 j++;
695 }
696 rbgId = (rbgId + 1) % rbgNum;
697 }
698 if (j == dciRbg.size())
699 {
700 // find new RBGs -> update DCI map
701 uint32_t rbgMask = 0;
702 for (std::size_t k = 0; k < dciRbg.size(); k++)
703 {
704 rbgMask = rbgMask + (0x1 << dciRbg.at(k));
705 rbgAllocatedNum++;
706 }
707 dci.m_rbBitmap = rbgMask;
708 rbgMap = rbgMapCopy;
709 NS_LOG_INFO(this << " Move retx in RBGs " << dciRbg.size());
710 }
711 else
712 {
713 // HARQ retx cannot be performed on this TTI -> store it
714 dlInfoListUntxed.push_back(m_dlInfoListBuffered.at(i));
715 NS_LOG_INFO(this << " No resource for this retx -> buffer it");
716 }
717 }
718 // retrieve RLC PDU list for retx TBsize and update DCI
720 auto itRlcPdu = m_dlHarqProcessesRlcPduListBuffer.find(rnti);
721 if (itRlcPdu == m_dlHarqProcessesRlcPduListBuffer.end())
722 {
723 NS_FATAL_ERROR("Unable to find RlcPdcList in HARQ buffer for RNTI " << rnti);
724 }
725 for (std::size_t j = 0; j < nLayers; j++)
726 {
727 if (retx.at(j))
728 {
729 if (j >= dci.m_ndi.size())
730 {
731 // for avoiding errors in MIMO transient phases
732 dci.m_ndi.push_back(0);
733 dci.m_rv.push_back(0);
734 dci.m_mcs.push_back(0);
735 dci.m_tbsSize.push_back(0);
736 NS_LOG_INFO(this << " layer " << (uint16_t)j
737 << " no txed (MIMO transition)");
738 }
739 else
740 {
741 dci.m_ndi.at(j) = 0;
742 dci.m_rv.at(j)++;
743 (*itHarq).second.at(harqId).m_rv.at(j)++;
744 NS_LOG_INFO(this << " layer " << (uint16_t)j << " RV "
745 << (uint16_t)dci.m_rv.at(j));
746 }
747 }
748 else
749 {
750 // empty TB of layer j
751 dci.m_ndi.at(j) = 0;
752 dci.m_rv.at(j) = 0;
753 dci.m_mcs.at(j) = 0;
754 dci.m_tbsSize.at(j) = 0;
755 NS_LOG_INFO(this << " layer " << (uint16_t)j << " no retx");
756 }
757 }
758 for (std::size_t k = 0; k < (*itRlcPdu).second.at(0).at(dci.m_harqProcess).size(); k++)
759 {
760 std::vector<RlcPduListElement_s> rlcPduListPerLc;
761 for (std::size_t j = 0; j < nLayers; j++)
762 {
763 if (retx.at(j))
764 {
765 if (j < dci.m_ndi.size())
766 {
767 NS_LOG_INFO(" layer " << (uint16_t)j << " tb size "
768 << dci.m_tbsSize.at(j));
769 rlcPduListPerLc.push_back(
770 (*itRlcPdu).second.at(j).at(dci.m_harqProcess).at(k));
771 }
772 }
773 else
774 { // if no retx needed on layer j, push an RlcPduListElement_s object with
775 // m_size=0 to keep the size of rlcPduListPerLc vector = 2 in case of MIMO
776 NS_LOG_INFO(" layer " << (uint16_t)j << " tb size " << dci.m_tbsSize.at(j));
777 RlcPduListElement_s emptyElement;
778 emptyElement.m_logicalChannelIdentity = (*itRlcPdu)
779 .second.at(j)
780 .at(dci.m_harqProcess)
781 .at(k)
782 .m_logicalChannelIdentity;
783 emptyElement.m_size = 0;
784 rlcPduListPerLc.push_back(emptyElement);
785 }
786 }
787
788 if (!rlcPduListPerLc.empty())
789 {
790 newEl.m_rlcPduList.push_back(rlcPduListPerLc);
791 }
792 }
793 newEl.m_rnti = rnti;
794 newEl.m_dci = dci;
795 (*itHarq).second.at(harqId).m_rv = dci.m_rv;
796 // refresh timer
797 auto itHarqTimer = m_dlHarqProcessesTimer.find(rnti);
798 if (itHarqTimer == m_dlHarqProcessesTimer.end())
799 {
800 NS_FATAL_ERROR("Unable to find HARQ timer for RNTI " << (uint16_t)rnti);
801 }
802 (*itHarqTimer).second.at(harqId) = 0;
803 ret.m_buildDataList.push_back(newEl);
804 rntiAllocated.insert(rnti);
805 }
806 else
807 {
808 // update HARQ process status
809 NS_LOG_INFO(this << " HARQ received ACK for UE " << m_dlInfoListBuffered.at(i).m_rnti);
810 auto it = m_dlHarqProcessesStatus.find(m_dlInfoListBuffered.at(i).m_rnti);
811 if (it == m_dlHarqProcessesStatus.end())
812 {
813 NS_FATAL_ERROR("No info find in HARQ buffer for UE "
814 << m_dlInfoListBuffered.at(i).m_rnti);
815 }
816 (*it).second.at(m_dlInfoListBuffered.at(i).m_harqProcessId) = 0;
817 auto itRlcPdu =
819 if (itRlcPdu == m_dlHarqProcessesRlcPduListBuffer.end())
820 {
821 NS_FATAL_ERROR("Unable to find RlcPdcList in HARQ buffer for RNTI "
822 << m_dlInfoListBuffered.at(i).m_rnti);
823 }
824 for (std::size_t k = 0; k < (*itRlcPdu).second.size(); k++)
825 {
826 (*itRlcPdu).second.at(k).at(m_dlInfoListBuffered.at(i).m_harqProcessId).clear();
827 }
828 }
829 }
830 m_dlInfoListBuffered.clear();
831 m_dlInfoListBuffered = dlInfoListUntxed;
832
833 if (rbgAllocatedNum == rbgNum)
834 {
835 // all the RBGs are already allocated -> exit
836 if (!ret.m_buildDataList.empty() || !ret.m_buildRarList.empty())
837 {
839 }
840 return;
841 }
842
843 auto itMax = m_flowStatsDl.end();
844 double metricMax = 0.0;
845 for (auto it = m_flowStatsDl.begin(); it != m_flowStatsDl.end(); it++)
846 {
847 auto itRnti = rntiAllocated.find(*it);
848 if (itRnti != rntiAllocated.end() || !HarqProcessAvailability(*it))
849 {
850 // UE already allocated for HARQ or without HARQ process available -> drop it
851 if (itRnti != rntiAllocated.end())
852 {
853 NS_LOG_DEBUG(this << " RNTI discarded for HARQ tx" << (uint16_t)(*it));
854 }
855 if (!HarqProcessAvailability(*it))
856 {
857 NS_LOG_DEBUG(this << " RNTI discarded for HARQ id" << (uint16_t)(*it));
858 }
859
860 continue;
861 }
862
863 auto itTxMode = m_uesTxMode.find(*it);
864 if (itTxMode == m_uesTxMode.end())
865 {
866 NS_FATAL_ERROR("No Transmission Mode info on user " << (*it));
867 }
868 auto nLayer = TransmissionModesLayers::TxMode2LayerNum((*itTxMode).second);
869 auto itCqi = m_p10CqiRxed.find(*it);
870 uint8_t wbCqi = 0;
871 if (itCqi != m_p10CqiRxed.end())
872 {
873 wbCqi = (*itCqi).second;
874 }
875 else
876 {
877 wbCqi = 1; // lowest value for trying a transmission
878 }
879
880 if (wbCqi != 0)
881 {
882 // CQI == 0 means "out of range" (see table 7.2.3-1 of 36.213)
883 if (LcActivePerFlow(*it) > 0)
884 {
885 // this UE has data to transmit
886 double achievableRate = 0.0;
887 for (uint8_t k = 0; k < nLayer; k++)
888 {
889 uint8_t mcs = 0;
890 mcs = m_amc->GetMcsFromCqi(wbCqi);
891 achievableRate +=
892 ((m_amc->GetDlTbSizeFromMcs(mcs, rbgSize) / 8) / 0.001); // = TB size / TTI
893
894 NS_LOG_DEBUG(this << " RNTI " << (*it) << " MCS " << (uint32_t)mcs
895 << " achievableRate " << achievableRate);
896 }
897
898 double metric = achievableRate;
899
900 if (metric > metricMax)
901 {
902 metricMax = metric;
903 itMax = it;
904 }
905 } // LcActivePerFlow
906
907 } // cqi
908
909 } // end for m_flowStatsDl
910
911 if (itMax == m_flowStatsDl.end())
912 {
913 // no UE available for downlink
914 NS_LOG_INFO(this << " any UE found");
915 }
916 else
917 {
918 // assign all free RBGs to this UE
919 std::vector<uint16_t> tempMap;
920 for (int i = 0; i < rbgNum; i++)
921 {
922 NS_LOG_INFO(this << " ALLOCATION for RBG " << i << " of " << rbgNum);
923 NS_LOG_DEBUG(this << " ALLOCATION for RBG " << i << " of " << rbgNum);
924 if (!rbgMap.at(i))
925 {
926 rbgMap.at(i) = true;
927 tempMap.push_back(i);
928 } // end for RBG free
929
930 } // end for RBGs
931 if (!tempMap.empty())
932 {
933 allocationMap[*itMax] = tempMap;
934 }
935 }
936
937 // generate the transmission opportunities by grouping the RBGs of the same RNTI and
938 // creating the correspondent DCIs
939 auto itMap = allocationMap.begin();
940 while (itMap != allocationMap.end())
941 {
942 // create new BuildDataListElement_s for this LC
944 newEl.m_rnti = (*itMap).first;
945 // create the DlDciListElement_s
946 DlDciListElement_s newDci;
947 newDci.m_rnti = (*itMap).first;
948 newDci.m_harqProcess = UpdateHarqProcessId((*itMap).first);
949
950 uint16_t lcActives = LcActivePerFlow((*itMap).first);
951 NS_LOG_INFO(this << "Allocate user " << newEl.m_rnti << " rbg " << lcActives);
952 if (lcActives == 0)
953 {
954 // Set to max value, to avoid divide by 0 below
955 lcActives = (uint16_t)65535; // UINT16_MAX;
956 }
957 uint16_t RbgPerRnti = (*itMap).second.size();
958 auto itCqi = m_p10CqiRxed.find((*itMap).first);
959 auto itTxMode = m_uesTxMode.find((*itMap).first);
960 if (itTxMode == m_uesTxMode.end())
961 {
962 NS_FATAL_ERROR("No Transmission Mode info on user " << (*itMap).first);
963 }
964 auto nLayer = TransmissionModesLayers::TxMode2LayerNum((*itTxMode).second);
965 for (uint8_t j = 0; j < nLayer; j++)
966 {
967 if (itCqi == m_p10CqiRxed.end())
968 {
969 newDci.m_mcs.push_back(0); // no info on this user -> lowest MCS
970 }
971 else
972 {
973 newDci.m_mcs.push_back(m_amc->GetMcsFromCqi((*itCqi).second));
974 }
975
976 int tbSize = (m_amc->GetDlTbSizeFromMcs(newDci.m_mcs.at(j), RbgPerRnti * rbgSize) /
977 8); // (size of TB in bytes according to table 7.1.7.2.1-1 of 36.213)
978 newDci.m_tbsSize.push_back(tbSize);
979 }
980
981 newDci.m_resAlloc = 0; // only allocation type 0 at this stage
982 newDci.m_rbBitmap = 0; // TBD (32 bit bitmap see 7.1.6 of 36.213)
983 uint32_t rbgMask = 0;
984 for (std::size_t k = 0; k < (*itMap).second.size(); k++)
985 {
986 rbgMask = rbgMask + (0x1 << (*itMap).second.at(k));
987 NS_LOG_INFO(this << " Allocated RBG " << (*itMap).second.at(k));
988 }
989 newDci.m_rbBitmap = rbgMask; // (32 bit bitmap see 7.1.6 of 36.213)
990
991 // create the rlc PDUs -> equally divide resources among actives LCs
992 for (auto itBufReq = m_rlcBufferReq.begin(); itBufReq != m_rlcBufferReq.end(); itBufReq++)
993 {
994 if (((*itBufReq).first.m_rnti == (*itMap).first) &&
995 (((*itBufReq).second.m_rlcTransmissionQueueSize > 0) ||
996 ((*itBufReq).second.m_rlcRetransmissionQueueSize > 0) ||
997 ((*itBufReq).second.m_rlcStatusPduSize > 0)))
998 {
999 std::vector<RlcPduListElement_s> newRlcPduLe;
1000 for (uint8_t j = 0; j < nLayer; j++)
1001 {
1002 RlcPduListElement_s newRlcEl;
1003 newRlcEl.m_logicalChannelIdentity = (*itBufReq).first.m_lcId;
1004 newRlcEl.m_size = newDci.m_tbsSize.at(j) / lcActives;
1005 NS_LOG_INFO(this << " LCID " << (uint32_t)newRlcEl.m_logicalChannelIdentity
1006 << " size " << newRlcEl.m_size << " layer " << (uint16_t)j);
1007 newRlcPduLe.push_back(newRlcEl);
1009 newRlcEl.m_logicalChannelIdentity,
1010 newRlcEl.m_size);
1011 if (m_harqOn)
1012 {
1013 // store RLC PDU list for HARQ
1014 auto itRlcPdu = m_dlHarqProcessesRlcPduListBuffer.find((*itMap).first);
1015 if (itRlcPdu == m_dlHarqProcessesRlcPduListBuffer.end())
1016 {
1017 NS_FATAL_ERROR("Unable to find RlcPdcList in HARQ buffer for RNTI "
1018 << (*itMap).first);
1019 }
1020 (*itRlcPdu).second.at(j).at(newDci.m_harqProcess).push_back(newRlcEl);
1021 }
1022 }
1023 newEl.m_rlcPduList.push_back(newRlcPduLe);
1024 }
1025 if ((*itBufReq).first.m_rnti > (*itMap).first)
1026 {
1027 break;
1028 }
1029 }
1030 for (uint8_t j = 0; j < nLayer; j++)
1031 {
1032 newDci.m_ndi.push_back(1);
1033 newDci.m_rv.push_back(0);
1034 }
1035
1036 newDci.m_tpc = 1; // 1 is mapped to 0 in Accumulated Mode and to -1 in Absolute Mode
1037
1038 newEl.m_dci = newDci;
1039
1040 if (m_harqOn)
1041 {
1042 // store DCI for HARQ
1043 auto itDci = m_dlHarqProcessesDciBuffer.find(newEl.m_rnti);
1044 if (itDci == m_dlHarqProcessesDciBuffer.end())
1045 {
1046 NS_FATAL_ERROR("Unable to find RNTI entry in DCI HARQ buffer for RNTI "
1047 << newEl.m_rnti);
1048 }
1049 (*itDci).second.at(newDci.m_harqProcess) = newDci;
1050 // refresh timer
1051 auto itHarqTimer = m_dlHarqProcessesTimer.find(newEl.m_rnti);
1052 if (itHarqTimer == m_dlHarqProcessesTimer.end())
1053 {
1054 NS_FATAL_ERROR("Unable to find HARQ timer for RNTI " << (uint16_t)newEl.m_rnti);
1055 }
1056 (*itHarqTimer).second.at(newDci.m_harqProcess) = 0;
1057 }
1058
1059 // ...more parameters -> ignored in this version
1060
1061 ret.m_buildDataList.push_back(newEl);
1062
1063 itMap++;
1064 } // end while allocation
1065 ret.m_nrOfPdcchOfdmSymbols = 1; /// \todo check correct value according the DCIs txed
1066
1068}
1069
1070void
1078
1079void
1082{
1083 NS_LOG_FUNCTION(this);
1084
1085 for (unsigned int i = 0; i < params.m_cqiList.size(); i++)
1086 {
1087 if (params.m_cqiList.at(i).m_cqiType == CqiListElement_s::P10)
1088 {
1089 NS_LOG_LOGIC("wideband CQI " << (uint32_t)params.m_cqiList.at(i).m_wbCqi.at(0)
1090 << " reported");
1091 uint16_t rnti = params.m_cqiList.at(i).m_rnti;
1092 auto it = m_p10CqiRxed.find(rnti);
1093 if (it == m_p10CqiRxed.end())
1094 {
1095 // create the new entry
1096 m_p10CqiRxed[rnti] =
1097 params.m_cqiList.at(i).m_wbCqi.at(0); // only codeword 0 at this stage (SISO)
1098 // generate correspondent timer
1100 }
1101 else
1102 {
1103 // update the CQI value and refresh correspondent timer
1104 (*it).second = params.m_cqiList.at(i).m_wbCqi.at(0);
1105 // update correspondent timer
1106 auto itTimers = m_p10CqiTimers.find(rnti);
1107 (*itTimers).second = m_cqiTimersThreshold;
1108 }
1109 }
1110 else if (params.m_cqiList.at(i).m_cqiType == CqiListElement_s::A30)
1111 {
1112 // subband CQI reporting high layer configured
1113 uint16_t rnti = params.m_cqiList.at(i).m_rnti;
1114 auto it = m_a30CqiRxed.find(rnti);
1115 if (it == m_a30CqiRxed.end())
1116 {
1117 // create the new entry
1118 m_a30CqiRxed[rnti] = params.m_cqiList.at(i).m_sbMeasResult;
1120 }
1121 else
1122 {
1123 // update the CQI value and refresh correspondent timer
1124 (*it).second = params.m_cqiList.at(i).m_sbMeasResult;
1125 auto itTimers = m_a30CqiTimers.find(rnti);
1126 (*itTimers).second = m_cqiTimersThreshold;
1127 }
1128 }
1129 else
1130 {
1131 NS_LOG_ERROR(this << " CQI type unknown");
1132 }
1133 }
1134}
1135
1136double
1137TdMtFfMacScheduler::EstimateUlSinr(uint16_t rnti, uint16_t rb)
1138{
1139 auto itCqi = m_ueCqi.find(rnti);
1140 if (itCqi == m_ueCqi.end())
1141 {
1142 // no cqi info about this UE
1143 return NO_SINR;
1144 }
1145 else
1146 {
1147 // take the average SINR value among the available
1148 double sinrSum = 0;
1149 unsigned int sinrNum = 0;
1150 for (uint32_t i = 0; i < m_cschedCellConfig.m_ulBandwidth; i++)
1151 {
1152 double sinr = (*itCqi).second.at(i);
1153 if (sinr != NO_SINR)
1154 {
1155 sinrSum += sinr;
1156 sinrNum++;
1157 }
1158 }
1159 double estimatedSinr = (sinrNum > 0) ? (sinrSum / sinrNum) : DBL_MAX;
1160 // store the value
1161 (*itCqi).second.at(rb) = estimatedSinr;
1162 return estimatedSinr;
1163 }
1164}
1165
1166void
1169{
1170 NS_LOG_FUNCTION(this << " UL - Frame no. " << (params.m_sfnSf >> 4) << " subframe no. "
1171 << (0xF & params.m_sfnSf) << " size " << params.m_ulInfoList.size());
1172
1174
1175 // Generate RBs map
1177 std::vector<bool> rbMap;
1178 std::set<uint16_t> rntiAllocated;
1179 std::vector<uint16_t> rbgAllocationMap;
1180 // update with RACH allocation map
1181 rbgAllocationMap = m_rachAllocationMap;
1182 // rbgAllocationMap.resize (m_cschedCellConfig.m_ulBandwidth, 0);
1183 m_rachAllocationMap.clear();
1185
1186 rbMap.resize(m_cschedCellConfig.m_ulBandwidth, false);
1187 // remove RACH allocation
1188 for (uint16_t i = 0; i < m_cschedCellConfig.m_ulBandwidth; i++)
1189 {
1190 if (rbgAllocationMap.at(i) != 0)
1191 {
1192 rbMap.at(i) = true;
1193 NS_LOG_DEBUG(this << " Allocated for RACH " << i);
1194 }
1195 }
1196
1197 if (m_harqOn)
1198 {
1199 // Process UL HARQ feedback
1200 for (std::size_t i = 0; i < params.m_ulInfoList.size(); i++)
1201 {
1202 if (params.m_ulInfoList.at(i).m_receptionStatus == UlInfoListElement_s::NotOk)
1203 {
1204 // retx correspondent block: retrieve the UL-DCI
1205 uint16_t rnti = params.m_ulInfoList.at(i).m_rnti;
1206 auto itProcId = m_ulHarqCurrentProcessId.find(rnti);
1207 if (itProcId == m_ulHarqCurrentProcessId.end())
1208 {
1209 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) " << rnti);
1210 }
1211 uint8_t harqId = (uint8_t)((*itProcId).second - HARQ_PERIOD) % HARQ_PROC_NUM;
1212 NS_LOG_INFO(this << " UL-HARQ retx RNTI " << rnti << " harqId " << (uint16_t)harqId
1213 << " i " << i << " size " << params.m_ulInfoList.size());
1214 auto itHarq = m_ulHarqProcessesDciBuffer.find(rnti);
1215 if (itHarq == m_ulHarqProcessesDciBuffer.end())
1216 {
1217 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) " << rnti);
1218 continue;
1219 }
1220 UlDciListElement_s dci = (*itHarq).second.at(harqId);
1221 auto itStat = m_ulHarqProcessesStatus.find(rnti);
1222 if (itStat == m_ulHarqProcessesStatus.end())
1223 {
1224 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) " << rnti);
1225 }
1226 if ((*itStat).second.at(harqId) >= 3)
1227 {
1228 NS_LOG_INFO("Max number of retransmissions reached (UL)-> drop process");
1229 continue;
1230 }
1231 bool free = true;
1232 for (int j = dci.m_rbStart; j < dci.m_rbStart + dci.m_rbLen; j++)
1233 {
1234 if (rbMap.at(j))
1235 {
1236 free = false;
1237 NS_LOG_INFO(this << " BUSY " << j);
1238 }
1239 }
1240 if (free)
1241 {
1242 // retx on the same RBs
1243 for (int j = dci.m_rbStart; j < dci.m_rbStart + dci.m_rbLen; j++)
1244 {
1245 rbMap.at(j) = true;
1246 rbgAllocationMap.at(j) = dci.m_rnti;
1247 NS_LOG_INFO("\tRB " << j);
1248 }
1249 NS_LOG_INFO(this << " Send retx in the same RBs " << (uint16_t)dci.m_rbStart
1250 << " to " << dci.m_rbStart + dci.m_rbLen << " RV "
1251 << (*itStat).second.at(harqId) + 1);
1252 }
1253 else
1254 {
1255 NS_LOG_INFO("Cannot allocate retx due to RACH allocations for UE " << rnti);
1256 continue;
1257 }
1258 dci.m_ndi = 0;
1259 // Update HARQ buffers with new HarqId
1260 (*itStat).second.at((*itProcId).second) = (*itStat).second.at(harqId) + 1;
1261 (*itStat).second.at(harqId) = 0;
1262 (*itHarq).second.at((*itProcId).second) = dci;
1263 ret.m_dciList.push_back(dci);
1264 rntiAllocated.insert(dci.m_rnti);
1265 }
1266 else
1267 {
1268 NS_LOG_INFO(this << " HARQ-ACK feedback from RNTI "
1269 << params.m_ulInfoList.at(i).m_rnti);
1270 }
1271 }
1272 }
1273
1274 std::map<uint16_t, uint32_t>::iterator it;
1275 int nflows = 0;
1276
1277 for (it = m_ceBsrRxed.begin(); it != m_ceBsrRxed.end(); it++)
1278 {
1279 auto itRnti = rntiAllocated.find((*it).first);
1280 // select UEs with queues not empty and not yet allocated for HARQ
1281 if (((*it).second > 0) && (itRnti == rntiAllocated.end()))
1282 {
1283 nflows++;
1284 }
1285 }
1286
1287 if (nflows == 0)
1288 {
1289 if (!ret.m_dciList.empty())
1290 {
1291 m_allocationMaps[params.m_sfnSf] = rbgAllocationMap;
1293 }
1294
1295 return; // no flows to be scheduled
1296 }
1297
1298 // Divide the remaining resources equally among the active users starting from the subsequent
1299 // one served last scheduling trigger
1300 uint16_t rbPerFlow = (m_cschedCellConfig.m_ulBandwidth) / (nflows + rntiAllocated.size());
1301 if (rbPerFlow < 3)
1302 {
1303 rbPerFlow = 3; // at least 3 rbg per flow (till available resource) to ensure TxOpportunity
1304 // >= 7 bytes
1305 }
1306 int rbAllocated = 0;
1307
1308 if (m_nextRntiUl != 0)
1309 {
1310 for (it = m_ceBsrRxed.begin(); it != m_ceBsrRxed.end(); it++)
1311 {
1312 if ((*it).first == m_nextRntiUl)
1313 {
1314 break;
1315 }
1316 }
1317 if (it == m_ceBsrRxed.end())
1318 {
1319 NS_LOG_ERROR(this << " no user found");
1320 }
1321 }
1322 else
1323 {
1324 it = m_ceBsrRxed.begin();
1325 m_nextRntiUl = (*it).first;
1326 }
1327 do
1328 {
1329 auto itRnti = rntiAllocated.find((*it).first);
1330 if ((itRnti != rntiAllocated.end()) || ((*it).second == 0))
1331 {
1332 // UE already allocated for UL-HARQ -> skip it
1333 NS_LOG_DEBUG(this << " UE already allocated in HARQ -> discarded, RNTI "
1334 << (*it).first);
1335 it++;
1336 if (it == m_ceBsrRxed.end())
1337 {
1338 // restart from the first
1339 it = m_ceBsrRxed.begin();
1340 }
1341 continue;
1342 }
1343 if (rbAllocated + rbPerFlow - 1 > m_cschedCellConfig.m_ulBandwidth)
1344 {
1345 // limit to physical resources last resource assignment
1346 rbPerFlow = m_cschedCellConfig.m_ulBandwidth - rbAllocated;
1347 // at least 3 rbg per flow to ensure TxOpportunity >= 7 bytes
1348 if (rbPerFlow < 3)
1349 {
1350 // terminate allocation
1351 rbPerFlow = 0;
1352 }
1353 }
1354
1355 UlDciListElement_s uldci;
1356 uldci.m_rnti = (*it).first;
1357 uldci.m_rbLen = rbPerFlow;
1358 bool allocated = false;
1359 NS_LOG_INFO(this << " RB Allocated " << rbAllocated << " rbPerFlow " << rbPerFlow
1360 << " flows " << nflows);
1361 while ((!allocated) && ((rbAllocated + rbPerFlow - m_cschedCellConfig.m_ulBandwidth) < 1) &&
1362 (rbPerFlow != 0))
1363 {
1364 // check availability
1365 bool free = true;
1366 for (int j = rbAllocated; j < rbAllocated + rbPerFlow; j++)
1367 {
1368 if (rbMap.at(j))
1369 {
1370 free = false;
1371 break;
1372 }
1373 }
1374 if (free)
1375 {
1376 uldci.m_rbStart = rbAllocated;
1377
1378 for (int j = rbAllocated; j < rbAllocated + rbPerFlow; j++)
1379 {
1380 rbMap.at(j) = true;
1381 // store info on allocation for managing ul-cqi interpretation
1382 rbgAllocationMap.at(j) = (*it).first;
1383 }
1384 rbAllocated += rbPerFlow;
1385 allocated = true;
1386 break;
1387 }
1388 rbAllocated++;
1389 if (rbAllocated + rbPerFlow - 1 > m_cschedCellConfig.m_ulBandwidth)
1390 {
1391 // limit to physical resources last resource assignment
1392 rbPerFlow = m_cschedCellConfig.m_ulBandwidth - rbAllocated;
1393 // at least 3 rbg per flow to ensure TxOpportunity >= 7 bytes
1394 if (rbPerFlow < 3)
1395 {
1396 // terminate allocation
1397 rbPerFlow = 0;
1398 }
1399 }
1400 }
1401 if (!allocated)
1402 {
1403 // unable to allocate new resource: finish scheduling
1404 m_nextRntiUl = (*it).first;
1405 if (!ret.m_dciList.empty())
1406 {
1408 }
1409 m_allocationMaps[params.m_sfnSf] = rbgAllocationMap;
1410 return;
1411 }
1412
1413 auto itCqi = m_ueCqi.find((*it).first);
1414 int cqi = 0;
1415 if (itCqi == m_ueCqi.end())
1416 {
1417 // no cqi info about this UE
1418 uldci.m_mcs = 0; // MCS 0 -> UL-AMC TBD
1419 }
1420 else
1421 {
1422 // take the lowest CQI value (worst RB)
1423 NS_ABORT_MSG_IF((*itCqi).second.empty(),
1424 "CQI of RNTI = " << (*it).first << " has expired");
1425 double minSinr = (*itCqi).second.at(uldci.m_rbStart);
1426 if (minSinr == NO_SINR)
1427 {
1428 minSinr = EstimateUlSinr((*it).first, uldci.m_rbStart);
1429 }
1430 for (uint16_t i = uldci.m_rbStart; i < uldci.m_rbStart + uldci.m_rbLen; i++)
1431 {
1432 double sinr = (*itCqi).second.at(i);
1433 if (sinr == NO_SINR)
1434 {
1435 sinr = EstimateUlSinr((*it).first, i);
1436 }
1437 if (sinr < minSinr)
1438 {
1439 minSinr = sinr;
1440 }
1441 }
1442
1443 // translate SINR -> cqi: WILD ACK: same as DL
1444 double s = log2(1 + (std::pow(10, minSinr / 10) / ((-std::log(5.0 * 0.00005)) / 1.5)));
1445 cqi = m_amc->GetCqiFromSpectralEfficiency(s);
1446 if (cqi == 0)
1447 {
1448 it++;
1449 if (it == m_ceBsrRxed.end())
1450 {
1451 // restart from the first
1452 it = m_ceBsrRxed.begin();
1453 }
1454 NS_LOG_DEBUG(this << " UE discarded for CQI = 0, RNTI " << uldci.m_rnti);
1455 // remove UE from allocation map
1456 for (uint16_t i = uldci.m_rbStart; i < uldci.m_rbStart + uldci.m_rbLen; i++)
1457 {
1458 rbgAllocationMap.at(i) = 0;
1459 }
1460 continue; // CQI == 0 means "out of range" (see table 7.2.3-1 of 36.213)
1461 }
1462 uldci.m_mcs = m_amc->GetMcsFromCqi(cqi);
1463 }
1464
1465 uldci.m_tbSize = (m_amc->GetUlTbSizeFromMcs(uldci.m_mcs, rbPerFlow) / 8);
1467 uldci.m_ndi = 1;
1468 uldci.m_cceIndex = 0;
1469 uldci.m_aggrLevel = 1;
1470 uldci.m_ueTxAntennaSelection = 3; // antenna selection OFF
1471 uldci.m_hopping = false;
1472 uldci.m_n2Dmrs = 0;
1473 uldci.m_tpc = 0; // no power control
1474 uldci.m_cqiRequest = false; // only period CQI at this stage
1475 uldci.m_ulIndex = 0; // TDD parameter
1476 uldci.m_dai = 1; // TDD parameter
1477 uldci.m_freqHopping = 0;
1478 uldci.m_pdcchPowerOffset = 0; // not used
1479 ret.m_dciList.push_back(uldci);
1480 // store DCI for HARQ_PERIOD
1481 uint8_t harqId = 0;
1482 if (m_harqOn)
1483 {
1484 auto itProcId = m_ulHarqCurrentProcessId.find(uldci.m_rnti);
1485 if (itProcId == m_ulHarqCurrentProcessId.end())
1486 {
1487 NS_FATAL_ERROR("No info find in HARQ buffer for UE " << uldci.m_rnti);
1488 }
1489 harqId = (*itProcId).second;
1490 auto itDci = m_ulHarqProcessesDciBuffer.find(uldci.m_rnti);
1491 if (itDci == m_ulHarqProcessesDciBuffer.end())
1492 {
1493 NS_FATAL_ERROR("Unable to find RNTI entry in UL DCI HARQ buffer for RNTI "
1494 << uldci.m_rnti);
1495 }
1496 (*itDci).second.at(harqId) = uldci;
1497 // Update HARQ process status (RV 0)
1498 auto itStat = m_ulHarqProcessesStatus.find(uldci.m_rnti);
1499 if (itStat == m_ulHarqProcessesStatus.end())
1500 {
1501 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) "
1502 << uldci.m_rnti);
1503 }
1504 (*itStat).second.at(harqId) = 0;
1505 }
1506
1507 NS_LOG_INFO(this << " UE Allocation RNTI " << (*it).first << " startPRB "
1508 << (uint32_t)uldci.m_rbStart << " nPRB " << (uint32_t)uldci.m_rbLen
1509 << " CQI " << cqi << " MCS " << (uint32_t)uldci.m_mcs << " TBsize "
1510 << uldci.m_tbSize << " RbAlloc " << rbAllocated << " harqId "
1511 << (uint16_t)harqId);
1512
1513 it++;
1514 if (it == m_ceBsrRxed.end())
1515 {
1516 // restart from the first
1517 it = m_ceBsrRxed.begin();
1518 }
1519 if ((rbAllocated == m_cschedCellConfig.m_ulBandwidth) || (rbPerFlow == 0))
1520 {
1521 // Stop allocation: no more PRBs
1522 m_nextRntiUl = (*it).first;
1523 break;
1524 }
1525 } while (((*it).first != m_nextRntiUl) && (rbPerFlow != 0));
1526
1527 m_allocationMaps[params.m_sfnSf] = rbgAllocationMap;
1529}
1530
1531void
1537
1538void
1544
1545void
1548{
1549 NS_LOG_FUNCTION(this);
1550
1551 for (unsigned int i = 0; i < params.m_macCeList.size(); i++)
1552 {
1553 if (params.m_macCeList.at(i).m_macCeType == MacCeListElement_s::BSR)
1554 {
1555 // buffer status report
1556 // note that this scheduler does not differentiate the
1557 // allocation according to which LCGs have more/less bytes
1558 // to send.
1559 // Hence the BSR of different LCGs are just summed up to get
1560 // a total queue size that is used for allocation purposes.
1561
1562 uint32_t buffer = 0;
1563 for (uint8_t lcg = 0; lcg < 4; ++lcg)
1564 {
1565 uint8_t bsrId = params.m_macCeList.at(i).m_macCeValue.m_bufferStatus.at(lcg);
1566 buffer += BufferSizeLevelBsr::BsrId2BufferSize(bsrId);
1567 }
1568
1569 uint16_t rnti = params.m_macCeList.at(i).m_rnti;
1570 NS_LOG_LOGIC(this << "RNTI=" << rnti << " buffer=" << buffer);
1571 auto it = m_ceBsrRxed.find(rnti);
1572 if (it == m_ceBsrRxed.end())
1573 {
1574 // create the new entry
1575 m_ceBsrRxed[rnti] = buffer;
1576 }
1577 else
1578 {
1579 // update the buffer size value
1580 (*it).second = buffer;
1581 }
1582 }
1583 }
1584}
1585
1586void
1589{
1590 NS_LOG_FUNCTION(this);
1591 // retrieve the allocation for this subframe
1592 switch (m_ulCqiFilter)
1593 {
1595 // filter all the CQIs that are not SRS based
1596 if (params.m_ulCqi.m_type != UlCqi_s::SRS)
1597 {
1598 return;
1599 }
1600 }
1601 break;
1603 // filter all the CQIs that are not SRS based
1604 if (params.m_ulCqi.m_type != UlCqi_s::PUSCH)
1605 {
1606 return;
1607 }
1608 }
1609 break;
1610 default:
1611 NS_FATAL_ERROR("Unknown UL CQI type");
1612 }
1613
1614 switch (params.m_ulCqi.m_type)
1615 {
1616 case UlCqi_s::PUSCH: {
1617 NS_LOG_DEBUG(this << " Collect PUSCH CQIs of Frame no. " << (params.m_sfnSf >> 4)
1618 << " subframe no. " << (0xF & params.m_sfnSf));
1619 auto itMap = m_allocationMaps.find(params.m_sfnSf);
1620 if (itMap == m_allocationMaps.end())
1621 {
1622 return;
1623 }
1624 for (uint32_t i = 0; i < (*itMap).second.size(); i++)
1625 {
1626 // convert from fixed point notation Sxxxxxxxxxxx.xxx to double
1627 double sinr = LteFfConverter::fpS11dot3toDouble(params.m_ulCqi.m_sinr.at(i));
1628 auto itCqi = m_ueCqi.find((*itMap).second.at(i));
1629 if (itCqi == m_ueCqi.end())
1630 {
1631 // create a new entry
1632 std::vector<double> newCqi;
1633 for (uint32_t j = 0; j < m_cschedCellConfig.m_ulBandwidth; j++)
1634 {
1635 if (i == j)
1636 {
1637 newCqi.push_back(sinr);
1638 }
1639 else
1640 {
1641 // initialize with NO_SINR value.
1642 newCqi.push_back(NO_SINR);
1643 }
1644 }
1645 m_ueCqi[(*itMap).second.at(i)] = newCqi;
1646 // generate correspondent timer
1647 m_ueCqiTimers[(*itMap).second.at(i)] = m_cqiTimersThreshold;
1648 }
1649 else
1650 {
1651 // update the value
1652 (*itCqi).second.at(i) = sinr;
1653 NS_LOG_DEBUG(this << " RNTI " << (*itMap).second.at(i) << " RB " << i << " SINR "
1654 << sinr);
1655 // update correspondent timer
1656 auto itTimers = m_ueCqiTimers.find((*itMap).second.at(i));
1657 (*itTimers).second = m_cqiTimersThreshold;
1658 }
1659 }
1660 // remove obsolete info on allocation
1661 m_allocationMaps.erase(itMap);
1662 }
1663 break;
1664 case UlCqi_s::SRS: {
1665 // get the RNTI from vendor specific parameters
1666 uint16_t rnti = 0;
1667 NS_ASSERT(!params.m_vendorSpecificList.empty());
1668 for (std::size_t i = 0; i < params.m_vendorSpecificList.size(); i++)
1669 {
1670 if (params.m_vendorSpecificList.at(i).m_type == SRS_CQI_RNTI_VSP)
1671 {
1672 Ptr<SrsCqiRntiVsp> vsp =
1673 DynamicCast<SrsCqiRntiVsp>(params.m_vendorSpecificList.at(i).m_value);
1674 rnti = vsp->GetRnti();
1675 }
1676 }
1677 auto itCqi = m_ueCqi.find(rnti);
1678 if (itCqi == m_ueCqi.end())
1679 {
1680 // create a new entry
1681 std::vector<double> newCqi;
1682 for (uint32_t j = 0; j < m_cschedCellConfig.m_ulBandwidth; j++)
1683 {
1684 double sinr = LteFfConverter::fpS11dot3toDouble(params.m_ulCqi.m_sinr.at(j));
1685 newCqi.push_back(sinr);
1686 NS_LOG_INFO(this << " RNTI " << rnti << " new SRS-CQI for RB " << j << " value "
1687 << sinr);
1688 }
1689 m_ueCqi[rnti] = newCqi;
1690 // generate correspondent timer
1692 }
1693 else
1694 {
1695 // update the values
1696 for (uint32_t j = 0; j < m_cschedCellConfig.m_ulBandwidth; j++)
1697 {
1698 double sinr = LteFfConverter::fpS11dot3toDouble(params.m_ulCqi.m_sinr.at(j));
1699 (*itCqi).second.at(j) = sinr;
1700 NS_LOG_INFO(this << " RNTI " << rnti << " update SRS-CQI for RB " << j << " value "
1701 << sinr);
1702 }
1703 // update correspondent timer
1704 auto itTimers = m_ueCqiTimers.find(rnti);
1705 (*itTimers).second = m_cqiTimersThreshold;
1706 }
1707 }
1708 break;
1709 case UlCqi_s::PUCCH_1:
1710 case UlCqi_s::PUCCH_2:
1711 case UlCqi_s::PRACH: {
1712 NS_FATAL_ERROR("TdMtFfMacScheduler supports only PUSCH and SRS UL-CQIs");
1713 }
1714 break;
1715 default:
1716 NS_FATAL_ERROR("Unknown type of UL-CQI");
1717 }
1718}
1719
1720void
1722{
1723 // refresh DL CQI P01 Map
1724 auto itP10 = m_p10CqiTimers.begin();
1725 while (itP10 != m_p10CqiTimers.end())
1726 {
1727 NS_LOG_INFO(this << " P10-CQI for user " << (*itP10).first << " is "
1728 << (uint32_t)(*itP10).second << " thr " << (uint32_t)m_cqiTimersThreshold);
1729 if ((*itP10).second == 0)
1730 {
1731 // delete correspondent entries
1732 auto itMap = m_p10CqiRxed.find((*itP10).first);
1733 NS_ASSERT_MSG(itMap != m_p10CqiRxed.end(),
1734 " Does not find CQI report for user " << (*itP10).first);
1735 NS_LOG_INFO(this << " P10-CQI expired for user " << (*itP10).first);
1736 m_p10CqiRxed.erase(itMap);
1737 auto temp = itP10;
1738 itP10++;
1739 m_p10CqiTimers.erase(temp);
1740 }
1741 else
1742 {
1743 (*itP10).second--;
1744 itP10++;
1745 }
1746 }
1747
1748 // refresh DL CQI A30 Map
1749 auto itA30 = m_a30CqiTimers.begin();
1750 while (itA30 != m_a30CqiTimers.end())
1751 {
1752 NS_LOG_INFO(this << " A30-CQI for user " << (*itA30).first << " is "
1753 << (uint32_t)(*itA30).second << " thr " << (uint32_t)m_cqiTimersThreshold);
1754 if ((*itA30).second == 0)
1755 {
1756 // delete correspondent entries
1757 auto itMap = m_a30CqiRxed.find((*itA30).first);
1758 NS_ASSERT_MSG(itMap != m_a30CqiRxed.end(),
1759 " Does not find CQI report for user " << (*itA30).first);
1760 NS_LOG_INFO(this << " A30-CQI expired for user " << (*itA30).first);
1761 m_a30CqiRxed.erase(itMap);
1762 auto temp = itA30;
1763 itA30++;
1764 m_a30CqiTimers.erase(temp);
1765 }
1766 else
1767 {
1768 (*itA30).second--;
1769 itA30++;
1770 }
1771 }
1772}
1773
1774void
1776{
1777 // refresh UL CQI Map
1778 auto itUl = m_ueCqiTimers.begin();
1779 while (itUl != m_ueCqiTimers.end())
1780 {
1781 NS_LOG_INFO(this << " UL-CQI for user " << (*itUl).first << " is "
1782 << (uint32_t)(*itUl).second << " thr " << (uint32_t)m_cqiTimersThreshold);
1783 if ((*itUl).second == 0)
1784 {
1785 // delete correspondent entries
1786 auto itMap = m_ueCqi.find((*itUl).first);
1787 NS_ASSERT_MSG(itMap != m_ueCqi.end(),
1788 " Does not find CQI report for user " << (*itUl).first);
1789 NS_LOG_INFO(this << " UL-CQI exired for user " << (*itUl).first);
1790 (*itMap).second.clear();
1791 m_ueCqi.erase(itMap);
1792 auto temp = itUl;
1793 itUl++;
1794 m_ueCqiTimers.erase(temp);
1795 }
1796 else
1797 {
1798 (*itUl).second--;
1799 itUl++;
1800 }
1801 }
1802}
1803
1804void
1805TdMtFfMacScheduler::UpdateDlRlcBufferInfo(uint16_t rnti, uint8_t lcid, uint16_t size)
1806{
1807 LteFlowId_t flow(rnti, lcid);
1808 auto it = m_rlcBufferReq.find(flow);
1809 if (it != m_rlcBufferReq.end())
1810 {
1811 NS_LOG_INFO(this << " UE " << rnti << " LC " << (uint16_t)lcid << " txqueue "
1812 << (*it).second.m_rlcTransmissionQueueSize << " retxqueue "
1813 << (*it).second.m_rlcRetransmissionQueueSize << " status "
1814 << (*it).second.m_rlcStatusPduSize << " decrease " << size);
1815 // Update queues: RLC tx order Status, ReTx, Tx
1816 // Update status queue
1817 if (((*it).second.m_rlcStatusPduSize > 0) && (size >= (*it).second.m_rlcStatusPduSize))
1818 {
1819 (*it).second.m_rlcStatusPduSize = 0;
1820 }
1821 else if (((*it).second.m_rlcRetransmissionQueueSize > 0) &&
1822 (size >= (*it).second.m_rlcRetransmissionQueueSize))
1823 {
1824 (*it).second.m_rlcRetransmissionQueueSize = 0;
1825 }
1826 else if ((*it).second.m_rlcTransmissionQueueSize > 0)
1827 {
1828 uint32_t rlcOverhead;
1829 if (lcid == 1)
1830 {
1831 // for SRB1 (using RLC AM) it's better to
1832 // overestimate RLC overhead rather than
1833 // underestimate it and risk unneeded
1834 // segmentation which increases delay
1835 rlcOverhead = 4;
1836 }
1837 else
1838 {
1839 // minimum RLC overhead due to header
1840 rlcOverhead = 2;
1841 }
1842 // update transmission queue
1843 if ((*it).second.m_rlcTransmissionQueueSize <= size - rlcOverhead)
1844 {
1845 (*it).second.m_rlcTransmissionQueueSize = 0;
1846 }
1847 else
1848 {
1849 (*it).second.m_rlcTransmissionQueueSize -= size - rlcOverhead;
1850 }
1851 }
1852 }
1853 else
1854 {
1855 NS_LOG_ERROR(this << " Does not find DL RLC Buffer Report of UE " << rnti);
1856 }
1857}
1858
1859void
1861{
1862 size = size - 2; // remove the minimum RLC overhead
1863 auto it = m_ceBsrRxed.find(rnti);
1864 if (it != m_ceBsrRxed.end())
1865 {
1866 NS_LOG_INFO(this << " UE " << rnti << " size " << size << " BSR " << (*it).second);
1867 if ((*it).second >= size)
1868 {
1869 (*it).second -= size;
1870 }
1871 else
1872 {
1873 (*it).second = 0;
1874 }
1875 }
1876 else
1877 {
1878 NS_LOG_ERROR(this << " Does not find BSR report info of UE " << rnti);
1879 }
1880}
1881
1882void
1884{
1885 NS_LOG_FUNCTION(this << " RNTI " << rnti << " txMode " << (uint16_t)txMode);
1887 params.m_rnti = rnti;
1888 params.m_transmissionMode = txMode;
1890}
1891
1892} // namespace ns3
static uint32_t BsrId2BufferSize(uint8_t val)
Convert BSR ID to buffer size.
Provides the CSCHED SAP.
FfMacCschedSapUser class.
virtual void CschedUeConfigCnf(const CschedUeConfigCnfParameters &params)=0
CSCHED_UE_CONFIG_CNF.
virtual void CschedUeConfigUpdateInd(const CschedUeConfigUpdateIndParameters &params)=0
CSCHED_UE_UPDATE_IND.
Provides the SCHED SAP.
FfMacSchedSapUser class.
virtual void SchedUlConfigInd(const SchedUlConfigIndParameters &params)=0
SCHED_UL_CONFIG_IND.
virtual void SchedDlConfigInd(const SchedDlConfigIndParameters &params)=0
SCHED_DL_CONFIG_IND.
This abstract base class identifies the interface by means of which the helper object can plug on the...
UlCqiFilter_t m_ulCqiFilter
UL CQI filter.
static double fpS11dot3toDouble(uint16_t val)
Convert from fixed point S11.3 notation to double.
Service Access Point (SAP) offered by the Frequency Reuse algorithm instance to the MAC Scheduler ins...
Definition lte-ffr-sap.h:29
Service Access Point (SAP) offered by the eNodeB RRC instance to the Frequency Reuse algorithm instan...
Smart pointer class similar to boost::intrusive_ptr.
Implements the SCHED SAP and CSCHED SAP for a Time Domain Maximize Throughput scheduler.
FfMacCschedSapProvider * m_cschedSapProvider
CSched SAP provider.
std::vector< DlInfoListElement_s > m_dlInfoListBuffered
HARQ retx buffered.
std::map< uint16_t, UlHarqProcessesDciBuffer_t > m_ulHarqProcessesDciBuffer
UL HARQ process DCI buffer.
std::vector< uint16_t > m_rachAllocationMap
RACH allocation map.
std::map< uint16_t, uint32_t > m_p10CqiTimers
Map of UE's timers on DL CQI P01 received.
void DoSchedUlCqiInfoReq(const FfMacSchedSapProvider::SchedUlCqiInfoReqParameters &params)
Sched UL CQI info request.
FfMacCschedSapUser * m_cschedSapUser
CSched SAP user.
uint8_t m_ulGrantMcs
MCS for UL grant (default 0)
void DoSchedUlTriggerReq(const FfMacSchedSapProvider::SchedUlTriggerReqParameters &params)
Sched UL trigger request.
void DoCschedCellConfigReq(const FfMacCschedSapProvider::CschedCellConfigReqParameters &params)
CSched cell config request.
void DoCschedLcConfigReq(const FfMacCschedSapProvider::CschedLcConfigReqParameters &params)
CSched LC config request.
void DoCschedUeReleaseReq(const FfMacCschedSapProvider::CschedUeReleaseReqParameters &params)
CSched UE release request.
LteFfrSapUser * GetLteFfrSapUser() override
void DoSchedDlRlcBufferReq(const FfMacSchedSapProvider::SchedDlRlcBufferReqParameters &params)
Sched DL RLC buffer request.
void DoSchedUlSrInfoReq(const FfMacSchedSapProvider::SchedUlSrInfoReqParameters &params)
Sched UL SR info request.
void TransmissionModeConfigurationUpdate(uint16_t rnti, uint8_t txMode)
Transmission mode configuration update function.
FfMacCschedSapProvider * GetFfMacCschedSapProvider() override
FfMacSchedSapProvider * m_schedSapProvider
Sched SAP provider.
std::set< uint16_t > m_flowStatsDl
Set of UE statistics (per RNTI basis) in downlink.
FfMacCschedSapProvider::CschedCellConfigReqParameters m_cschedCellConfig
CSched cell config.
friend class MemberSchedSapProvider< TdMtFfMacScheduler >
allow MemberSchedSapProvider<TdMtFfMacScheduler> class friend access
int GetRbgSize(int dlbandwidth)
Get RBG size function.
std::map< uint16_t, UlHarqProcessesStatus_t > m_ulHarqProcessesStatus
UL HARQ process status.
void SetFfMacCschedSapUser(FfMacCschedSapUser *s) override
set the user part of the FfMacCschedSap that this Scheduler will interact with.
FfMacSchedSapUser * m_schedSapUser
Sched SAP user.
friend class MemberCschedSapProvider< TdMtFfMacScheduler >
allow MemberCschedSapProvider<TdMtFfMacScheduler> class friend access
bool HarqProcessAvailability(uint16_t rnti)
Return the availability of free process for the RNTI specified.
void DoSchedDlPagingBufferReq(const FfMacSchedSapProvider::SchedDlPagingBufferReqParameters &params)
Sched DL paging buffer request.
std::map< uint16_t, std::vector< uint16_t > > m_allocationMaps
Map of previous allocated UE per RBG (used to retrieve info from UL-CQI)
void UpdateUlRlcBufferInfo(uint16_t rnti, uint16_t size)
Update UL RLC buffer info function.
void DoSchedUlNoiseInterferenceReq(const FfMacSchedSapProvider::SchedUlNoiseInterferenceReqParameters &params)
Sched UL noise interference request.
std::map< uint16_t, DlHarqRlcPduListBuffer_t > m_dlHarqProcessesRlcPduListBuffer
DL HARQ process RLC PDU list buffer.
std::map< uint16_t, std::vector< double > > m_ueCqi
Map of UEs' UL-CQI per RBG.
void DoSchedDlMacBufferReq(const FfMacSchedSapProvider::SchedDlMacBufferReqParameters &params)
Sched DL MAC buffer request.
std::map< uint16_t, DlHarqProcessesStatus_t > m_dlHarqProcessesStatus
DL HARQ process status.
std::set< uint16_t > m_flowStatsUl
Set of UE statistics (per RNTI basis)
void UpdateDlRlcBufferInfo(uint16_t rnti, uint8_t lcid, uint16_t size)
Update DL RLC buffer info function.
FfMacSchedSapProvider * GetFfMacSchedSapProvider() override
unsigned int LcActivePerFlow(uint16_t rnti)
LC active flow function.
void DoSchedDlCqiInfoReq(const FfMacSchedSapProvider::SchedDlCqiInfoReqParameters &params)
Sched DL CQI info request.
std::map< uint16_t, uint32_t > m_ceBsrRxed
Map of UE's buffer status reports received.
std::map< uint16_t, uint32_t > m_ueCqiTimers
Map of UEs' timers on UL-CQI per RBG.
void SetFfMacSchedSapUser(FfMacSchedSapUser *s) override
set the user part of the FfMacSchedSap that this Scheduler will interact with.
void DoSchedDlRachInfoReq(const FfMacSchedSapProvider::SchedDlRachInfoReqParameters &params)
Sched DL RACH info request.
std::map< uint16_t, DlHarqProcessesDciBuffer_t > m_dlHarqProcessesDciBuffer
DL HARQ process DCI buffer.
std::map< uint16_t, uint8_t > m_uesTxMode
txMode of the UEs
void DoSchedUlMacCtrlInfoReq(const FfMacSchedSapProvider::SchedUlMacCtrlInfoReqParameters &params)
Sched UL MAC control info request.
LteFfrSapProvider * m_ffrSapProvider
FFR SAP provider.
std::map< uint16_t, SbMeasResult_s > m_a30CqiRxed
Map of UE's DL CQI A30 received.
void RefreshHarqProcesses()
Refresh HARQ processes according to the timers.
void DoCschedLcReleaseReq(const FfMacCschedSapProvider::CschedLcReleaseReqParameters &params)
CSched LC release request.
uint8_t UpdateHarqProcessId(uint16_t rnti)
Update and return a new process Id for the RNTI specified.
std::map< uint16_t, uint32_t > m_a30CqiTimers
Map of UE's timers on DL CQI A30 received.
std::map< uint16_t, uint8_t > m_dlHarqCurrentProcessId
DL HARQ current process ID.
static TypeId GetTypeId()
Get the type ID.
void SetLteFfrSapProvider(LteFfrSapProvider *s) override
Set the Provider part of the LteFfrSap that this Scheduler will interact with.
LteFfrSapUser * m_ffrSapUser
FFR SAP user.
std::map< uint16_t, uint8_t > m_ulHarqCurrentProcessId
UL HARQ current process ID.
void DoDispose() override
Destructor implementation.
void DoCschedUeConfigReq(const FfMacCschedSapProvider::CschedUeConfigReqParameters &params)
CSched UE config request.
bool m_harqOn
m_harqOn when false inhibit the HARQ mechanisms (by default active)
void RefreshDlCqiMaps()
Refresh DL CQI maps function.
~TdMtFfMacScheduler() override
Destructor.
double EstimateUlSinr(uint16_t rnti, uint16_t rb)
Estimate UL SINR function.
void DoSchedDlTriggerReq(const FfMacSchedSapProvider::SchedDlTriggerReqParameters &params)
Sched DL trigger request.
std::map< uint16_t, uint8_t > m_p10CqiRxed
Map of UE's DL CQI P01 received.
uint16_t m_nextRntiUl
RNTI of the next user to be served next scheduling in UL.
void RefreshUlCqiMaps()
Refresh UL CQI maps function.
std::vector< RachListElement_s > m_rachList
RACH list.
std::map< uint16_t, DlHarqProcessesTimer_t > m_dlHarqProcessesTimer
DL HARQ process timer.
std::map< LteFlowId_t, FfMacSchedSapProvider::SchedDlRlcBufferReqParameters > m_rlcBufferReq
Vectors of UE's LC info.
static uint8_t TxMode2LayerNum(uint8_t txMode)
Transmit mode 2 layer number.
a unique identifier for an interface.
Definition type-id.h:48
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition type-id.cc:1001
Hold an unsigned integer type.
Definition uinteger.h:34
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
Definition assert.h:55
#define NS_ASSERT_MSG(condition, message)
At runtime, in debugging builds, if this condition is not true, the program prints the message to out...
Definition assert.h:75
#define NS_FATAL_ERROR(msg)
Report a fatal error with a message and terminate.
#define NS_ABORT_MSG_IF(cond, msg)
Abnormal program termination if a condition is true, with a message.
Definition abort.h:97
#define NS_LOG_ERROR(msg)
Use NS_LOG to output a message of level LOG_ERROR.
Definition log.h:243
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition log.h:191
#define NS_LOG_DEBUG(msg)
Use NS_LOG to output a message of level LOG_DEBUG.
Definition log.h:257
#define NS_LOG_LOGIC(msg)
Use NS_LOG to output a message of level LOG_LOGIC.
Definition log.h:271
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition log.h:264
Ptr< T > CreateObject(Args &&... args)
Create an object by type, with varying number of constructor parameters.
Definition object.h:619
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition object-base.h:35
#define HARQ_PERIOD
Definition lte-common.h:19
#define SRS_CQI_RNTI_VSP
Every class exported by the ns3 library is enclosed in the ns3 namespace.
Ptr< const AttributeChecker > MakeBooleanChecker()
Definition boolean.cc:113
std::vector< uint8_t > DlHarqProcessesTimer_t
DL HARQ process timer vector.
Ptr< const AttributeChecker > MakeUintegerChecker()
Definition uinteger.h:85
constexpr double NO_SINR
Value for SINR outside the range defined by FF-API, used to indicate that there is no CQI for this el...
Ptr< const AttributeAccessor > MakeUintegerAccessor(T1 a1)
Definition uinteger.h:35
std::vector< uint8_t > UlHarqProcessesStatus_t
UL HARQ process status vector.
std::vector< uint8_t > DlHarqProcessesStatus_t
DL HARQ process status vector.
Ptr< T1 > DynamicCast(const Ptr< T2 > &p)
Cast a Ptr.
Definition ptr.h:580
std::vector< DlDciListElement_s > DlHarqProcessesDciBuffer_t
DL HARQ process DCI buffer vector.
@ SUCCESS
constexpr uint32_t HARQ_DL_TIMEOUT
HARQ DL timeout.
constexpr uint32_t HARQ_PROC_NUM
Number of HARQ processes.
static const int TdMtType0AllocationRbg[4]
TDMT type 0 allocation RBG.
Ptr< const AttributeAccessor > MakeBooleanAccessor(T1 a1)
Definition boolean.h:70
std::vector< RlcPduList_t > DlHarqRlcPduListBuffer_t
Vector of the 8 HARQ processes per UE.
std::vector< UlDciListElement_s > UlHarqProcessesDciBuffer_t
UL HARQ process DCI buffer vector.
See section 4.3.8 buildDataListElement.
std::vector< std::vector< struct RlcPduListElement_s > > m_rlcPduList
RLC PDU list.
struct DlDciListElement_s m_dci
DCI.
See section 4.3.10 buildRARListElement.
See section 4.3.1 dlDciListElement.
std::vector< uint8_t > m_ndi
New data indicator.
uint8_t m_harqProcess
HARQ process.
uint32_t m_rbBitmap
RB bitmap.
std::vector< uint8_t > m_mcs
MCS.
uint8_t m_resAlloc
The type of resource allocation.
std::vector< uint16_t > m_tbsSize
The TBs size.
std::vector< uint8_t > m_rv
Redundancy version.
uint8_t m_tpc
Tx power control command.
Parameters of the CSCHED_LC_CONFIG_REQ primitive.
Parameters of the CSCHED_LC_RELEASE_REQ primitive.
Parameters of the CSCHED_UE_CONFIG_REQ primitive.
Parameters of the CSCHED_UE_RELEASE_REQ primitive.
Parameters of the CSCHED_UE_CONFIG_CNF primitive.
Parameters of the CSCHED_UE_CONFIG_UPDATE_IND primitive.
Parameters of the SCHED_DL_CQI_INFO_REQ primitive.
Parameters of the SCHED_DL_MAC_BUFFER_REQ primitive.
Parameters of the SCHED_DL_PAGING_BUFFER_REQ primitive.
Parameters of the SCHED_DL_RACH_INFO_REQ primitive.
Parameters of the SCHED_DL_TRIGGER_REQ primitive.
Parameters of the SCHED_UL_CQI_INFO_REQ primitive.
Parameters of the SCHED_UL_MAC_CTRL_INFO_REQ primitive.
Parameters of the SCHED_UL_NOISE_INTERFERENCE_REQ primitive.
Parameters of the SCHED_UL_SR_INFO_REQ primitive.
Parameters of the SCHED_UL_TRIGGER_REQ primitive.
std::vector< BuildDataListElement_s > m_buildDataList
build data list
std::vector< BuildRarListElement_s > m_buildRarList
build rar list
uint8_t m_nrOfPdcchOfdmSymbols
number of PDCCH OFDM symbols
Parameters of the SCHED_UL_CONFIG_IND primitive.
std::vector< UlDciListElement_s > m_dciList
DCI list.
LteFlowId structure.
Definition lte-common.h:32
See section 4.3.9 rlcPDU_ListElement.
uint8_t m_logicalChannelIdentity
logical channel identity
See section 4.3.2 ulDciListElement.
int8_t m_pdcchPowerOffset
CCH power offset.
int8_t m_tpc
Tx power control command.
uint8_t m_dai
DL assignment index.
uint8_t m_cceIndex
Control Channel Element index.
uint8_t m_ulIndex
UL index.
uint8_t m_ueTxAntennaSelection
UE antenna selection.
bool m_cqiRequest
CQI request.
uint8_t m_freqHopping
freq hopping
uint8_t m_aggrLevel
The aggregation level.
bool m_ulDelay
UL delay?
int8_t m_tpc
Tx power control command.
bool m_cqiRequest
CQI request?
bool m_hopping
hopping?
uint16_t m_tbSize
size
uint8_t m_rbLen
length
uint8_t m_mcs
MCS.
uint8_t m_rbStart
start
uint16_t m_rnti
RNTI.